I was reviewing some things in chapter one and in the exercises under the topic "Visualizing Topics", I found a particular exercise that called my attention. The exercise is 1.7 from page 31, and even though that's not going to be in the test I thought it was interesting. So here it goes: "What is wrong, with the following statement? Twenty years ago an ancient artifact was determined to be 1900 years old. It must now be 1920 years old." I don't see anything wrong with that statement, but I can't be sure of the answer because it doesn't appear at the back of the book. So what do you guys think?
I though about it and in my opinion as I read the question I figured that maybe at the time it was determined the artifact to have 1900 years old there weren't the instrument as precise as then when it was calculated again. Maybe it was calcullated with another instrument, making this instrument measure more accurant. I'm saying more accurant because it was seen that the artifact really has 1920 years old not 1900.
I found this article really interesting. It talks about how the students of Sinclair Community College are using cooking oil as biodiesel fuel. By this, students are not only helping the Community College by saving some money, but also they are giving them the opportunity to learn about engineering and chemistry. This alternative fuel is made from oilseed crops (such as canola or soybean), or from used vegetable oil. They can also be made by other fats. The best part about this discovery is that this concept is being driven as an environmental awareness!
Viole, I read the article you found out and it is very interesting how these students are using a new way of energy to continue using our cars. I had heard about a discover like this one some time ago while I was watching Discovery Channel, and I am glad people is more concerned about our planet, since we are looking for energy alternatives that might help it to survive.
Guys I also found an interesting article called: Nano-tetherball Biosensor Precisely Detects Glucose http://www.sciencedaily.com/releases/2009/01/090122110652.htm This one is about the creation of a precise biosensor for detecting blood glucose and potentially many other biological molecules by using hollow structures called single-wall carbon nanotubes anchored to gold-coated (nanocubes). The article caught my attention because with this new biosensor, people who suffer from Diabetes would be continuously monitored for glucose in the blood. In my case is more personally to know about these kinds of new scientific methods since my dad is diabetic and I could become one too. So I hope the article is of your interest! :)
Hey guys!!! I found this article while I was doing a research for other class. I found it very interesting even though it is kind of hard to understand because we have not covered that part of chemistry yet but you can check it out and see what you think:
Scientists at Penn State University and the Virginia Commonwealth University have discovered a way to produce hydrogen by exposing selected clusters of aluminum atoms to water. The findings are important because they demonstrate that it is the geometries of these aluminum clusters, rather than solely their electronic properties, that govern the proximity of the clusters' exposed active sites. The proximity of the clusters' exposed sites plays an important role in affecting the clusters' reactions with water.
I found an article that allowed me to better understand the reason why men can lose weight faster than women. Not only do they have a faster metabolism, but now a study shows that they can also control their hunger better than women. Men and not women are able to control their brain’s response to their own favorite foods. The lead author of the study, Gene-Jack Wang, stated “Our findings may help us understand the neurobiological mechanisms underlying the ability to control food intake, and suggest new pharmacological methods or other interventions to help people regulate eating behavior and maintain a healthy weight,” When both men and women were asked to inhibit their response to food, they described themselves as less hungry than when they weren’t trying to inhibit their response. “Even though the women said they were less hungry when trying to inhibit their response to the food, their brains were still firing away in the regions that control the drive to eat,” Wang said. “In contrast, men’s brain activity decreased along with their self-reports of hunger during the scan when they were asked to keep their hunger in check.” I find it ironic how women obsess more over there weight than men do, and yet they have more trouble keeping it off.
Hy guys I found this article really interesting. This is a new scientific Imaging method that is allowing scientist to see Cell Molecules more clearly! This electron microscopy is the most sophisticated tool to see objects at the size of molecules and cells.This microscopy uses a micro fluid device with elecron transparent(Liquid STEM) windows to allow the imaging of the cells. in liquid. I hope you like it and learn something from it, most for the ones in the medical field.
Maelys, i wish we could use that new technique in our lab :) Well, this new object is going to be great for new discoveries since the image of the molecules will have a better resolution and faster speed!!!
I found a really interesting article about a new cement that can help bones to regenerate. This material is Silicate and is going to replace calcium phosphate cement. Silicate is a more convenient material due to the fact that it sets in just five minutes, differently from calcium phosphate that takes over an hour. Scientist say that Silicate will encourage the growth of osteoblasts (the cells that are responsible for regenerating bone tissue) this might open the possibility of its use as in implant material. Future research of this new regenerator is going to be about improving its injectability and durability.
If you want to read the complete article here is the link. http://www.rsc.org/Publishing/ChemTech/Volume/2009/03/silicate_cement.asp
I read the blog that Maelys posted and I was very interested in the topic. One of the things that caught my attention the most was how quicly the new cement (Silicate) could set in. It is amazing how scientist can create and then modify different types of materials, such as the cement used to help regenerate bones. For instance, in the earlier years they did indeed use calcium phosphate, but now they have been able to replace it with this much quicker material.
According to this article, scientist created a tiny sensor that monitors electrical conductivity and allows them to detect hydrogen peroxide in explosives. This is very good its not just another discovery, but a discovery that actually helps the human kind from terrorist.
Dinosaur Fossils Fit Perfectly Into The Evolutionary Tree Of Life, Study Finds; http://www.sciencedaily.com/releases/2009/01/090126082351.htm A recent study by researchers at the University of Bath and London’s Natural History Museum has found that scientists’ knowledge of the evolution of dinosaurs is remarkably complete.
This is an article I found, and I enjoyed reading about it, since I love this kind of history. I hope you enjoy it too ..
http://cosmos.bcst.yahoo.com/up/player/popup/?rn=3906861&cl=11872954&ch=4226722&src=news This is an associated press video and it talks about how the temperature in prehistoric times chemicaly altered the metabolism of cold blooded species. It specifies a 45 Ft snake which closely resembles a modern day Boa constrictor but since the earth temperature was much higher in that era the snale was able to grow much bigger than it can today. So this find makes you think about our current global warming predicament and how it can affect the animals gradually possibly allowing these snakes to once again reach these massive sizes. I found it very interesting , I hope you all do too.
A new camera now allows us to see the emissions of green house gases being released into the atmosphere. It is really surprising to see how much of it comes out of our cars! go ahead and watch the quick documentary on the following link : http://cosmos.bcst.yahoo.com/up/player/popup/?rn=3906861&cl=11872784&ch=4226724&src=news
Hayabusa, a Japanese Space Probe has its capsule return planned for June 2010! This probe has been launched since may 2003, and its hot ION ENGINE has been operating for none other than 31,000 hrs. Could you imagine? If this space probe brings back samples of the asteroid, Itokawa; then it will be the FIRST one to do so....if you guys are interested in reading some more facts on this article check out the link below ^-~: http://news.yahoo.com/s/space/20090205/sc_space/beleagueredjapaneseasteroidprobeheadedhome;_ylt=ApI7l7BeeOOJdt_CVADqMGMPLBIF
I found an amazing article that reads the following: "Your Breath Could Be Recycled into fuel" I was astounded as I found out how Origo Industries has developed this so called, Eco Box, that was originally designed to reduce emissions of Carbon from vehicles; to becoming the first technological object to recycle breaths of passengers at the Liverpool John Lennon airport into biofule. I found it to be very interesting, thid surely helps us save a lot of energy. I hope the experiment is a true SUCCESS!!! :) To read more you can head to this link:
http://www.chemeurope.com/news/e/95605/ This news is about how the Agilent Technologies Inc. and the National University of Ireland announced an opening of a Biological Mass Spectrometry Facility! This facility focuses on different interesting things such as the functional genomics, proteomics, lipidomics and metabolomics research. If you are interested, check it out in the link above!
US scientist have discovered a way to produce hydrogen in small amounts. Great! The team was able to see that aluminium clusters' have the ability to split water molecules and release hydrogen. However, only clusters of certain sizes and geometries can perform the hydrogen-forming reaction. This is a very interesting article if you want to keep reading about it heres the link. http://www.rsc.org/chemistryworld/News/2009/January/28010901.asp
Have you ever heard about the mortal virus the Ebola? Well guys researches from the University of Pennsilvannia have discovered why this virus is so much powerfull. It desables a cellular protein called tetherin wich blocks the spread of virus from cell to cell.This new discovery of how tetherin works will allow scientist to inhibit this interaction and create an antiviral response and recover.The article is super interesting, this virus(Ebola) kills 90%percent of people infected.Her's the link:http://www.sciencedaily.com/releases/2009/01/090127152838.htm
I actually read this in pg 147 of our text book and I found it very useful. Not drinking enough water can lead to dehydration and because 60% of our body is composed of water, we could die within three days of not drinking water. But it turns out that excess water consumption, which can lead to hyponatremia (a condition in which the concentration of sodium ion in the blood is too low) is more dangerous than dehydration. For example, Hillary Bellamy, a first time marathon runner, died from hyponatremia-induced swelling of the brain. The normal blood sodium level is between 135-145 mM, and a concentration below 120 mM can be critical. To help prevent overhydration in marathon events, the number of water stations has been reduced.
ok, so we all thought multivitamins were suppose to be helpful right? Wrong! In a study that was conducted recently, scientist found that multivitamins really did nothing to impact heart disease or cancer. In fact, throughout a period of eight years 162,000 women were used to put the vitamins to the test, and the results were sort of shocking. Some of the women after the eight years were diagnosed with cancer, cardiovascular problems, and there were even some deaths. Although this is definetly a shock to many, some scientist claim that this has been known for a while. But now there's proof, and the eight year long study helped to bring out the truth. So basically, doctors are saying to just eat your fruits and veggies, and forget the vitamin supplement.
I was reading a latest article "Fossils Reveal Truth About Darwin's Theory" and found it to be interesting to share. This week is the 200th anniversary of the well known father of the theory of evolution Charles Darwin. Due to this press releases are ready to combat false claim on Darwin's theory. As evidence for this theory transitional creatures should resemble intermediate ones. For more information on this article you can follow this link below: http://www.livescience.com/animals/090211-transitional-fossils.html
"They can't match Harry Potter yet, but scientists are moving closer to creating a real cloak of invisibility." I ound this really interesting article on how scientist at Duke University can actually block microwaves rom reaching an object and doing so create an invisibility cloak around the object. I was really amazed at how advanced science is getting as I read this article, If you guys are interested as well you can find the full article in the following link :http://news.yahoo.com/s/ap/20090115/ap_on_sc/sci_cloak_of_invisibility;_ylt=AhadJr5X_Q6lv5qQZSV52IMszJV4
Possibilities that mars can actually sustaine life just went up, as scientist have found evidence of methane on mars! the surprising thing is that it turns out that Mars' mechanism for producing geothermal gasses is a lot better than the one on earth, but there are a lot of factors to consider that according to this article can only be deciphered by an actual human landing on mars .... to read more visit: http://dsc.discovery.com/news/2009/01/15/mars-methane-life-02.html
As most of you guys know I'm in the PW class, and for the symposium we are investigating about happiness. We each picked a subtopic to work on, that is related to happiness. I chose to investigate about the chemicals that our brain produces when we are happy and how our brain behaves in general. I found out that serotonin is the chemical that makes us feel happy. It is a neurotransmitter that affects our mood. It lowers our stress hormones and boosts our immune system. It's chemical formula is C10H12N2O. It's an organic compound (we'll learn about them in organic chemistry). Antidepressants are made out of chemicals that affect our serotonin levels.
There is a new method for detecting 23 different drugs and medicine in a saliva sample! Isn’t that incredible? It was discovered by a team of scientists from the Institute of Legal Medicine at the University of Santiago de Compostela. If you want to read more, come check it out at this page: http://www.sciencedaily.com/releases/2009/02/090211122532.htm
The article i found this week is about a new class of materials that are expected to be of special use as catalysts. A team of chemists working at Arizona State University has designed and synthesized the material. "If you can develop more open materials like this one, the range of things you can do chemically will be greatly increased. A lot of chemists have been striving for something exactly like this for some time now, so this is a moment that everyone's been waiting for," O'Keeffe said. The article is very interesting.... http://www.sciencedaily.com/releases/1999/11/991119075722.htm
Scientists have found a way to read minds with the purpose of opening the world of choices for the children that can't speak or move...Guys scientisct can actually know what we are thinking with this new technique. check this out:
Maelys I went to check out the article about reading the mind and is incredible what can be done with this new technique. Children that can not speak or move, now have the capacity of letting know others what they are thinking, giving them an opportunity of expression not imaged before. I also got impress by the article saying that drinking to much water can caused death, since I am the kind of person who drink to much water. Now I am more concern about how much water I consumed.
I was reading an article that caught my attention. It made me think about how amazing is chemistry science and all the good things that we can have out it. Now I am more excited to keep studying it!!!. Well the article title is: "Two-step Chemical Process Turns Raw Biomass Into Biofuel".It is kind of complicated but as you read toward the end you will get the point..Read it !!!
ScienceDaily (Feb. 20, 2009) — The key to the new process is the first step, in which cellulose is converted into the "platform" chemical 5-hydroxymethylfurfural (HMF), from which a variety of valuable commodity chemicals can be made. "Other groups have demonstrated some of the individual steps involved in converting biomass to HMF, starting with glucose or fructose," says Ronald Raines, a professor with appointments in the Department of Biochemistry and the Department of Chemistry. "What we did was show how to do the whole process in one step, starting with biomass itself."
Raines and graduate student Joseph Binder, a doctoral candidate in the chemistry department, developed a unique solvent system that makes this conversion possible. The special mix of solvents and additives, for which a patent is pending, has an extraordinary capacity to dissolve cellulose, the long chains of energy-rich sugar molecules found in plant material. Because cellulose is one of the most abundant organic substances on the planet, it is widely seen as a promising alternative to fossil fuels."This solvent system can dissolve cotton balls, which are pure cellulose," says Raines. "And it's a simple system—not corrosive, dangerous, expensive or stinky." This approach simultaneously bypasses another vexing problem: lignin, the glue that holds plant cell walls together. Often described as intractable, lignin molecules act like a cage protecting the cellulose they surround. However, Raines and Binder used chemicals small enough to slip between the lignin molecules, where they work to dissolve the cellulose, cleave it into its component pieces and then convert those pieces into HMF. In step two, Raines and Binder subsequently converted HMF into the promising biofuel 2,5-dimethylfuran (DMF). Taken together, the overall yield for this two-step biomass-to-biofuel process was 9 percent, meaning that 9 percent of the cellulose in their corn stover samples was ultimately converted into biofuel. "The yield of DMF isn't fabulous yet, but that second step hasn't been optimized," says Raines, who is excited about DMF's prospects as a biofuel. DMF, he notes, has the same energy content as gasoline, doesn't mix with water and is compatible with the existing liquid transportation fuel infrastructure. It has already been used as a gasoline additive.
I was reading an article that caught my attention. It made me think about how amazing is chemistry science and all the good things that we can have out it. Now I am more excited to keep studying it!!!. Well the article title is: "Two-step Chemical Process Turns Raw Biomass Into Biofuel".It is kind of complicated but as you read toward the end you will get the point..Read it !!!
ScienceDaily (Feb. 20, 2009) — The key to the new process is the first step, in which cellulose is converted into the "platform" chemical 5-hydroxymethylfurfural (HMF), from which a variety of valuable commodity chemicals can be made. "Other groups have demonstrated some of the individual steps involved in converting biomass to HMF, starting with glucose or fructose," says Ronald Raines, a professor with appointments in the Department of Biochemistry and the Department of Chemistry. "What we did was show how to do the whole process in one step, starting with biomass itself."
Raines and graduate student Joseph Binder, a doctoral candidate in the chemistry department, developed a unique solvent system that makes this conversion possible. The special mix of solvents and additives, for which a patent is pending, has an extraordinary capacity to dissolve cellulose, the long chains of energy-rich sugar molecules found in plant material. Because cellulose is one of the most abundant organic substances on the planet, it is widely seen as a promising alternative to fossil fuels."This solvent system can dissolve cotton balls, which are pure cellulose," says Raines. "And it's a simple system—not corrosive, dangerous, expensive or stinky." This approach simultaneously bypasses another vexing problem: lignin, the glue that holds plant cell walls together. Often described as intractable, lignin molecules act like a cage protecting the cellulose they surround. However, Raines and Binder used chemicals small enough to slip between the lignin molecules, where they work to dissolve the cellulose, cleave it into its component pieces and then convert those pieces into HMF. In step two, Raines and Binder subsequently converted HMF into the promising biofuel 2,5-dimethylfuran (DMF). Taken together, the overall yield for this two-step biomass-to-biofuel process was 9 percent, meaning that 9 percent of the cellulose in their corn stover samples was ultimately converted into biofuel. "The yield of DMF isn't fabulous yet, but that second step hasn't been optimized," says Raines, who is excited about DMF's prospects as a biofuel. DMF, he notes, has the same energy content as gasoline, doesn't mix with water and is compatible with the existing liquid transportation fuel infrastructure. It has already been used as a gasoline additive.
This article describes the discovery of the first stable complex of calcium (I). As you know this is a highly unusual structure! The scientist Matthias Westerhausen found that two calcium (I) ions can be stabilized by inserting an arene group between them. I recommend you read this because it will open you mind and explain several things about this new complex! Check it out in this page: http://www.rsc.org/chemistryworld/News/2009/February/20020901.asp
Guys scientists have discovered a fosil from about 150 million years ago, it is a dinosaur who was about to become a bird. This discovery is one that proves Darwin's theory of evolution. Its scientific name is Thermopolis specimen of Archaeopteryx lithographica. This discovery was possible with the use of the world most powerful Xray machine which uncovers details of the dinosaur's bones. These ray X work a thousand time better than what we could do with any regular Xray machine. Its really interesting if u will like to read more details about the article you can use this link: http://www.sciencedaily.com/releases/2009/02/090215151858.htm
I found a great article about solar power plants. It talks about new ways on how to use renewable resources we have at hand. One of those ways is that molten salts can store the sun's heat during the day and provide power at night... its cheaper! I found it very interesting but if any of you guys want to learn more about it heres the link: http://www.sciam.com/article.cfm?id=how-to-use-solar-energy-at-night
Reading some latest news I encountered thi very interesting article on some ancient artifacts found in Denver, Colordao. This discovery was a total accident, as are a certain portion of prestigious discoveries found in the sciene field. As some landscappers were escavating a simple pond they happened to stumble upon 13,000 year old tools used by Clovis people. These hunter-gatherers lived during the ice age period, and still remain a puzzle to antrhopologists. Still these landscapers found 83 of these hunters ancient tools. The tools proved to be very significant carrying along with them blood and other protein residue with a biochemical analysis which revealed how they were used. For example they were used to butcher special sorts if animals such as camels, sheeps, bears, and horses. An innovation to the previous facts discovered by anthropologists. If you guys are interestinhg in reading this very insightful article the ling is posted below:
Another very interesting article I found, and thought I should share it is called, "Finding genes that make teeth grow all in a row". I was amazed at the scientific discoveries that are being found when we least expect it! The article covers how there is a specific gene that was found to be the one that prevents addtional teeth formation in species who are destined to a limited set. Scientists used mice that lacked this gene to bread, and discovered that the rodents would later develope a new set of teeth next to their first molars. This new discovery could help us in future medical procedures such as tooth loss, gum disease as well as limiting imperfect procedures such as implants, and dentures.
To check out more of this article, the link is posted below:
The article i found for this week is about solar power. US researchers are lookinf for affordable solar energy solutions. Currently energy from traditional silicon solar cells is more than twice as expensive as energy derived from wind and natural gas. The team analysed a range of possible alternative photovoltaic materials in order to find something. 23 promising semiconducting materials were assessed, and 12 were found to have the capacity to meet or exceed the global energy need, which means that work has been done, and they really want to make this, because its better for us and planet earth. The articles link is: http://www.rsc.org/chemistryworld/News/2009/February/26020901.asp
http://www.medicalnewstoday.com/articles/140759.php New Test for Detecting Fake Organic Milk - Journal of Agricultural and Food Chemistry In the United States, it is illegal to falsely advertise a product. But in Germany, since demand for organic milk rose by almost one-third in just one year, crooks are taking advantage of the situation by marketing increasing quantities of fake organic milk. That situation created a need for better tests to detect the fraud. Before this new test, no one was 100% sure if the product they were buying was truly organic. The scientists developed a test based on an analysis of milk fat for the ratio of stable isotopes of carbon. They used it to identify milk samples from cows raised on feed containing a higher ration of maize. Such a feeding regimen is typical of conventional milk production. Organically raised cows are fed less maize but more pasture. In addition, they found that organic milk was a higher alpha-linolenic acid content than conventional milk
This article describes the new offer that chemists found on a new hydrogen purification method. As you may know, before we can use hydrogen as a fuel cells we need to purified it; but the methods that we use, are not good enough. However the chemist Mercouri G. Kanatzidis with his group developed a class of new porous materials that can separate in a very effective way hydrogen from complex gas mixtures! Don’t forget to check it out!! http://www.sciencedaily.com/releases/2009/02/090215151755.htm
Do you guys remember the things we talked in Chemistry the other day about "global warming"? well Dr. Okafor sent me a couple of articles that were really interesting so I wanted to share them with you guys. I really liked one in which it stated that those people who provided Al Gore with all of his facts and charts are backing up and saying they are are not sure sure of whether CO2 can be considered a greenhouse effect or not. It's amazing how Al Gore went ahead and started his movement without proof of what he was saying. He even used false pictures to say that global warming is melting the ice sheets. I also watched a video in you tube in which a group of English scientists talk about 35 mistakes they found in Al Gore's video "An Inconvenient Truth". I can remember one of the mistakes of the video more than the others because it's really something; in his video Al Gore says that the sea rise will rise by 600 feet, and in reality it will rise aproximately 6 feet. It is clear that Al Gore is NOT a scientist! In my opinion this whole global warming movement is a business. The carbon credit thing is a business. It is ok to pullute the planet if we pay for it? Besides who are we paying? Here are the links to all of this information: http://www.youtube.com/watch?v=kuHoTCsB3Vw http://www.youtube.com/watch?v=k4gKy2GUoEw http://www.iterasi.net/openviewer.aspx?sqrlitid=udkitl5pvecqcynzvb11fg http://dotearth.blogs.nytimes.com/2009/02/23/gore-pulls-slide-of-disaster-trends/
Hello everyone: I found this article about the discovery of doctors of a better way of using x-rays in order of the benefit of the community.Dark-field(how is called now) images provide more detail than ordinary x-ray radiographs and could be used to diagnose the onset of osteoporosis, breast cancer or Alzheimer's disease, to identify explosives in hand luggage, or to pinpoint hairline cracks or corrosion in functional structures. It would be great if you guys go to the page and can check it.. http://www.news-medical.net/?id=34546
I also would like to say that I loved the presentations tonight, in special the experiments. I had fun with all of you guys and I also learned a lot about African-American Scientist, it was good to enjoy this event as a group.
I wanted to start saying that I also liked the presentation last night. I think we saw a different side of each of us. I think everyone did a good job. The experiment were amazing and the best part of the night.Thanks to all my classmates who contributed ant to Dr. Okafor for those last words.
Now to the real thing. I found a very interesting article about the discovering of Rhodium quinones. Dr. Sweigart create this compound with the mixture of hydroquinone and Rhodium. The article mentions some properties of both of these substances. It also states some of the uses of the catalyst formed like for example its use in the making of drugs for diseases like cancer, depression among other very useful uses.
Check it out!!!! I think is really interesting and instructive. http://www.theallineed.com/chemistry/06031507.htm
http://climatesanity.wordpress.com/criticisms-or-al-gores-an-inconvenient-truth/ I was reading more about Al Gore and the criticism he faces on his film An Inconvenient Truth, and I found the arguments against him to be very interesting. There were nine in total but only two really caught my attention. In his documentary, Al Gore suggests that Hurricane Katrina was caused by global warming. He even stated: “What changed in the US with Hurricane Katrina was a feeling that we have entered a period of consequences.” It’s ridiculous to attribute one natural disaster to global warming. He also claimed that polar bears had drowned due to the disappearance of artic ice when in reality it was due to a very violent snow storm. He believes that polar bears can become extinct due to global warming; and experts believe that this is pure exaggeration. Experts have proved that polar bears have survived periods of less Arctic ice than exists today. I was also watching a video on you tube which shows us how Al Gore twisted the truth in many charts and graphs he used to prove his point. “There’s a difference between science and science fiction.” Here’s the link to the video: http://www.youtube.com/watch?v=XU8jyz9Acy0
Science advances everyday in gienat leaps , we can see this clearly by all the new tachnology that becomes available to the public. What is surprising is how close we are coming to making scince fiction a reality. Engineers are building a Space rocket that behaves like a jet. In a matter of years traveling into space will be as easy as traveling by jet to another city. I found it really interesting how this new jet will work and how easy it'll make outer space travel ... You guys can check it out here:http://www.newscientist.com/article/dn16682-airbreathing-planes-the-spaceships-of-the-future.html
"THE rings left behind by spilled coffee have inspired a new way to make ultrathin coatings for LCD and plasma flat-screens. In LCDs, transparent conductive coatings are used to form an electrode on the surface of the screen, while in plasma TVs they provide a shield that prevents electromagnetic fields from straying. The traditional techniques for making such coatings include sputtering a fine layer of indium tin oxide onto the surface. ITO is highly conductive and transparent to visible light, but the process is expensive, requiring clean rooms and vacuum chambers......" Read more at http://www.newscientist.com/article/mg20126975.500-future-tv-screens-seen-in-coffee-stains.html
Parents can pick the gender, and traits their unborn child will have to their liking new tachnology allows this to done in just a simple visit to the doctor's office. This issue has become very controversial as of late as some find it unethical to tamper with the child's traits like such, but it really is amazing if we focus on the scientific aspect. you guys can go ahead and read more if you like in the following article "Designer Babies" http://www.albertmohler.com/blog_read.php?id=3311
Studies have shown that too much sun exposure is actually more dangerous than previously believed. And lighter skinned people are more at risk than darker skinned people to develop skin cancer. Over 70,000 people in the UK are diagnosed with skin cancer each year and sunburn is a contributing factor. For this reason, Andrew Mills and colleagues from the University of Strathclyde, Glasgow, have created what they claim is a 'simple, inexpensive, unambiguous sunburn indicator' that can be tuned to different skin types. 'It is the simplicity of the chemistry, and its ability to work on all skin types, that makes this research so effective,' comments Peter Robertson, an expert in photocatalysis at the Robert Gordon University, Aberdeen, UK.
Hi, today i found an article about a technique to electrically detect individual DNA bases cut from a single strand of DNA that has been developed by researchers in the UK. The technique works by breaking up DNA strands into their component nucleotide bases, and passing them through a single chemically and genetically engineered protein "nanopore" mounted on a lipid bilayer... Sounds very interesting!!! Heres the link, for those that want more info abou the article... http://www.rsc.org/chemistryworld/News/2009/February/22020901.asp
Good afternoon classmates!!! As we all know we gotta write about an article every week.I was trying to find out what is up to chemistry.Among all I read this is the one I believe is more interesting.. See if you agree with me:
"Recent attention in the literature has focused on methods to self-assemble nanometer- and micrometer-sized particles into highly ordered structures for use in photonic,(1, 2) electronic,(3) and biomedical applications.(4) For example, binary nanoparticle superlattices(2, 5) and ionic colloidal crystals(6) have been reported with structures reminiscent of atomic crystals, e.g., NaCl and CsCl. Complex phases, such as the double diamond lattice,(7) have been synthesized for covalently linked systems of tetrapods. Other methods to assemble nanoparticles have relied on anisotropic interactions, e.g., dipole moments(8-11) and surface patterns,(12-16) to create wires,(8, 10, 17) free-floating sheets,(11) and two-dimensional crystals.(12) In previous work, we examined two methods to assemble particles into ordered arrays and other complex structures using anisotropic interactions: “patchy particles”(16) and “tethered nanoparticles”.(18) Patchy particles are nanometer- or micrometer-sized particles with directional interactions conferred via patches on their surface. The location of patches dictates the local ordering and structure, ranging from square packed sheets(16) to the diamond lattice.(19) Tethered nanoparticles are hybrid nanoparticle−polymer building blocks where nanoparticles are bonded as “headgroups” to immiscible polymer tethers to create a new type of amphiphile. The immiscibility between the nanoparticle and polymer tether facilitates microphase separation into bulk periodic structures similar to those observed in block copolymers, including phases such as lamellar sheets,(20-22) ordered cylinders,(20-22) and the double gyroid,(21, 23) but with additional ordering arising from the nanoparticle shape".
I was reading this article and I found it really interesting how particles of carbon known as buckyballs may be able to keep the nation's water pipes clear. A buckyball, or C60, is one shape within the family of tiny carbon shapes known as fullerenes. Bulkyballs hinder the ability of bacteria and other microorganisms to accumulate on the membranes used to filter water in treatment plants. Therefore, coating pipes and membranes with these nanoparticles may prove to be an effective strategy for addressing one of the major problems and costs of treating water. According to Chae, the addition of buckyballs to treatment membranes had a two-fold effect. First, treated membranes showed less bacterial attachment than non-treated membranes. After three days, the membranes treated with buckyballs had on average 20 colony forming units.
Hey guys, I apologize for the fact that I have not written or commented much on the blog. However, I found this interesting article related to coral reefs and carbon dioxide. I happen to enjoy the beach much and love the water, so it caught my attention. It mainly states that higher temperatures in our oceans and relatively higher amounts of carbon dioxide absorbed by the oceans are killing coral reefs. It also talks about coral bleaching which results in the loss of algea. It is also said that algea is essential for the healthy growth of coral colonies. At the end of the article the researchers start talking about "how we" are the ones causing all these issues, but I partly question this statement. Is it really all of our fault or are there other factors that can be adding to our harm? Is it really all of our fault?
I happened to stumble on a pretty interesting article named, "5 Facts About Friday the 13th". The topic rewviews five of the favorite friday the 13th facts in connection to prominent historical figures. Some of these are ex- president Franklin D. Roosevelt, ex-president Herbert Hoover, Napoleon, Mark Twain, and even the bible with the thirteenth guess at the last supper who betrayed Jesus. Fear of this date is one of the well-known scientific myths. Its scientific name is paraskavedekatriaphobia, and Triskaidekaphobia is the fear of the number 13th. I find this fear to be of people who happen to be superstitious, but some believe numbers have a specific interelation with individuals. To read the article visit this link below: http://www.livescience.com/culture/090312-friday-the-13th.html
I read an article on the scent of fear on us humans, and thought I should post it. The article explains how an experiment was conducted with both men and women to collect data on the rsults of our reactions to different smells coming from others. The males were used as the sweat donors( due to the scientific fact that they have larger apocrine sweat glands than females). The females were then chosen as the respondants. There were factors applied to the testing; the males would only use scent-free soaps, as well as a special diet that avoided odorous food. For the testing, the males had gauze pads placed under their axilla's while they would watch diverse films. Then the females had the gauze pads from the males placed under their noses as they watched the faces of the donors in correspondance to the flms.
To read this article and find out more interesting facts head to the link below: http://www.livescience.com/health/090310-fear-scent.html
Guys there is a therapy that may help and benefit kids with authism. This theraphy is based on the application of high concentrations of oxigen at increased athmospheric tempreratures, this is called hyperbaric treatment. One theory about this tratment is that the oxigen can reduce the inflamation and improve the flow of oxigen to brain tissue. Kids that received the treatment showed significant improvement in overall funcional, here we can mention reception language, social interaction, eye contact and sensory or congnotive awareness. The hyperbaric treatment have show significant improvement in the behavior of authist kids, but is not yet proved that the treatment is long lasting. If you want to read more about click here: http://news.bbc.co.uk/2/hi/health/7940149.stm
I was very impressed with this article i found about killing breast cancer cells. Its time for scientist to find the right medication, and i think they did it. In Brown University chemists targets a class of breast cancer cells known as Her-2 tumor cells, a unique, dumbbell-shaped twin nanoparticle. It will be very good if this gets to work!. Heres the link if any of you guys want to continue reading... http://www.sciencedaily.com/releases/2009/03/090310120353.htm
Sea Level Rise Due To Global Warming Poses Threat To New York City
Although there are different theories on global warming, most scientist are looking for ways to slow this down. A study conducted by Jianjun Yin, a climate modeler at the Center for Ocean-Atmospheric Prediction Studies (COAPS) at Florida State, said there is a better than 90 percent chance that the sea level rise along this heavily populated coast will exceed the mean global sea level rise by the year 2100. "The northeast coast of the United States is among the most vulnerable regions to future changes in sea level and ocean circulation, especially when considering its population density and the potential socioeconomic consequences of such changes," Yin said. "The most populous states and cities of the United States and centers of economy, politics, culture and education are located along that coast."
Ever wanted to shed a couple pounds? Well, according to scientist, studies show that there is an inverse correlation between how much vitamin D you consume and your weight. Unfortunately, this study has only been done for those of us within the ages of 14-19. Scientist have not yet been able to prove that weight is truly connected to the vitamin D consumption of the teenager, but they do say that there's some sort of connection. In fact, young black teen girls who are known to consume less vitamin D, are in the heavier weight sets. On another hand, young white males are the ones closes to the intake necessary and they are in fact leaner. So, although there is not 100% proof, there is a certain reasoning behind the study.
Hello classmates, this weekend i found an article about the Shewanella oneidensis bacterium breaks down metal to chemically extract oxygen. Researchers are studying some common soil bacteria that “inhale” toxic metals and “exhale” them in a non-toxic form. The bacteria might one day be used to clean up toxic chemicals left over from nuclear weapons production decades ago. It is a very interesting article, i recomand you guys to read it!!!! Heres the link http://www.sciencedaily.com/releases/2009/03/090316151031.htm
Hello everyone, I have found an article that talks about how a young graduated research and her team from the University of Cincinnati engineering, uncover factors that control ion motion in solid electrolytes. The articles says that researchers show for the first time that they can connect an increase in electrical (ionic) conductivity with flexibility of their networks. The same team of researchers discovered intermediate phases seven years ago in amorphous or disordered materials where networks are covalently bonded. The article also states that the group's next step in their research will be to understand why traces of water change the behavior of these electrolytes so drastically and to understand if the behavior observed here of three elastic domains is a general feature of all electrolyte glasses or is it peculiar to this very well studied material. Is good to have researches like these, right? :)
scientists have created this new material that fixes itself when exposed to ultraviolet light. Like for example a scratch on a car. It is made from the shells of shrimp and as this article says this material will soon be a part of our daily lifes. read the full article at :http://www.sciencenews.org/view/generic/id/41696/title/Light_could_heal_materials
Guys can you imagine that we could create natural gas from bacterias? well biological engineers have created kind of a waste digester that might provide the electricity that we need in the future. This digester uses two strains of bacteria to convert waste into bio-gas, it can turn three tons of food scraps into energy for 25 houses a day, and it could be useful for fuel procesing plants. It is planned to be used in several states in the last couple of years. This discovery can make a huge difference in the situation with the environment. If you want to read more about this discovery go to this link: http://www.sciencedaily.com/videos/2006/1002-turning_trash_into_power.htm
The skeleton of a mammoth from the last ice age was found in Los Angeles! it is from aproximatelly 40,000 years ago. This mammoth is a Columbian mammoth; like a specie of elephant that become extinct near the end of the last ice age. Included with it there were found fosils of prehistoric American Lion skull, lion bones, bones from dire wolves, saber-toothed cats, juvenile horse and bison, teratorn, coyotes, lynx and ground sloths. Wow what a discovery, It is expected to double the size of the museum! In the website there are interesting pictures about the discovery, if you want to see them go here http://www.newsdaily.com/stories/tre51h7r2-us-mammoth/
In my trip to Austria I visited the Museum of Natural History in Vienna. There I saw the famous Venus of Willendorf. The little figure is really interesting because it's a plump woman without a face. Venus is a statuette made of fine limestone. It's only 11cm high! It was discovered in Willendorf (lower Austria) on August 7, 1908 during excavations carried out by the Prehistory Department of the Natural History Museum. The little statue has it's tiny arms folded on top of her breasts, and it has no feet. The strong emphasis on the sexual features has led to an interpretation of the artifact as a symbol of fertility. Guess how old is the Venus of Willenorf? It is 25,000 years old! Interesting right?
I thought that the silicone conversation we had last class with doctor Okafor was really interesting and I wanted to learn more about silicone. It turns out that silicone it's used very widely these days. You won't believe the many applications these compounds have besides being used as breast implants. First I want to tell you guys why it's so used. That's because of it's properties: -it can resist high temperatures, oxygen exposure, UV rays and ozone -it repels water and electricity -once it's dry is non-stick -low chemical reactivity -low toxicity, but it doesn't support microbiological growth -high gas permeability Amazing right? As doctor Okafor said they are made out of silicon, oxygen, hydrogen, carbon and sometimes other chemical compounds. As I mentioned before it is used very widely as: -aquarium joints -automotive field -coatings (it's used to coat glass) -cookware (molds and utensils) -defoamers -dry cleaning (it dissolves dry cleaning wastes which makes it environmentally friendly) -lubricants -medicine (not only as breasts implant, but also to make bandages, and dental dams) -moldmaking -personal care (hair conditioner, shampoo, hair gel, shaving products) -plumbing and building construction It's amazing right!!!
While searching for an interesting article to post up this week I happened to fnd one that caught my attention. The article "Astronomers catch a shooting star for 1st time" reviews the amazing discivery found in the desert of Sudan. Trying to track a small asteroid heading towards Earth before it had turned into a shooting star, the asteroid blew up in the sky befor e reaching land and scientists believed that they would find no trace of space rocks left to examine. Something that has never been tried before. As mentioned previously about 8.7 lbs of this material was found by dozens of students in Sudan's dessert. This is a complete new material that scientist will have the oppurtunity to examine. The chunks of the asteroid 2008TC3 have brought back memories of when these sort of rocks tried and then failed to become a planet "4.5 billion years ago". To read the article the link is posted below: http://news.yahoo.com/s/ap/20090325/ap_on_sc/sci_asteroid_match;_ylt=At41o03s6xaCkjL53c3fR3cPLBIF
On the latest news on energy I have found an article concerning the contamination of toxins found near and in the waterways of the states of Chicago, Dallas, Philadelphia, Phoenix and Orlando, Fla. Fish from these states were found to contain some common medications "antihistamine diphenhydramine (Benadryl), an anticonvulsant and two types of antidepressants" as well. The article states that this has been the first time that this amount of diverse compunds have been found in diverse locations. To read more of the compounds found in the tissues and livers of these fishes, plus more info on the subject the link is posted below:
The article I found this week was about the alkali metals and some new characteristics they share. We talked about alkali metals in class this week, so i thought this will be an interesting article to read. According to the article, esearchers have discovered a chemical curiosity, alkali metals that prefer aromatic surfaces to water and form clam-like structures. Brendan Abrahams and his team from the University of Melbourne, Australia, were surprised to find that alkali metal cations prefer to surround themselves entirely with aromatic systems, despite being created in an aqueous solution.
Hydrogen bonding holds the two shells together to form the clam-like structure. The shells are anionic with the cations forming the 'flesh' inside. 'It seems to be a really nice match inside the clam-like structure between the cation and the electron-rich cavity provided by the aromatic surfaces. It was a surprise to us that a metal ion would do that,' says Abrahams. They found that Rb+ and Cs+ were the right size to fit inside the clam. No clam formed when they used the smaller K+ cation, and with larger cations the clam shells opened up. With the larger cations the clam hinge was just a single, or pair, of hydrogen bonds. The fact that the clam still forms even when the hydrogen bonding is disrupted by the larger ions shows the importance of the electrostatic attraction between host and guest.
The researchers made the discovery while making molecular building blocks for coordination polymers and oligomers linked with metal ions. This work has produced some tetrahedral and other large molecules.
Although the researchers haven't come up with any direct applications for their discovery yet, Abrahams is optimistic about where future research will take them, saying 'who knows what this might lead to'. But for the time being, he says it is just a chemical curiosity.
Oh My God you guys I just found out something truly interesting. I just started studying for the test we have on Monday, so I decided to read the chapter. Guess what I found out? Even though Argon (Ar)'s atomic number is 18 and Potassium (K)'s atomic number is 19, Ar has a greater mass than K. It was really choking for me, I had never noticed it before. However it is not a mistake in the periodic table or anything like that, because the periodic table is arranged in increasing atomic number, not mass. Also, the elements are correctly placed in the table according to their properties. It was interesting anyways, right?
http://www.sciencedaily.com/releases/2009/03/090326215100.htm This article talks about the increscent of the risk of having throat cancer by drinking very hot tea. I found it really interesting because most of us drink tea every once in a while. It says that people are advised to wait a few minutes before drinking a cup of tea. This was studied a group of British scientists, and it was carried out in northern Iran, where large amounts of hot tea are drunk every day. They concluded that drinking very hot tea (70 C or more) can increase the risk of cancer of the esophagus which is the muscular tube that carries food from the throat to the stomach.
Claudia I noticed the same while reading the chapter and I agree with you that is an interesting characteristic of how well are elements arranged in the periodic table.Science is amazing, right?
Well now changing a little bit of the theme i would like to share with you guys some scary news about a new form of destructive terrorist material unlike. The chemist have been reporting their concerns that terrorists could produce a new and particularly dangerous form of the explosive responsible for airport security screening of passengers' shoes and restrictions on liquids in carry on baggage are unfounded.Detonation of 0.5 grams of triacetone triperoxide (TATP) -- a trivial sample size compared to quantities in modern-day terrorist materials -- emits a shock wave that destroys a nearby water balloon. At the 237th ACS National Meeting, chemists are reporting that a new, more powerful explosive related to TATP is unlikely. At the end the good news are that the solution have been analyzed already and according to Harbison, a chemist at the University of Nebraska-Lincoln, said "Our analysis indicates that potentially new and destructive terrorist materials, which would tax our detection capabilities, may be too unstable for a practical synthesis,We consider it unlikely that any of the previous syntheses were actually successful, and the Internet myths about TeATeP are nothing more than that. So the good news is basically this is something we don't have to worry about." At the end the amazing part of all these is to know what different substances together can create, even though some times can turn dangerous.
scientists now say that Quantum entanglement can be too much of a good thing "Physicists have long thought that quantum entanglement, a mysterious link between separated particles that Einstein called “spooky action at a distance,” would allow quantum computers to solve certain hard math problems much faster than ordinary computers. But now it seems that entanglement can also be a nuisance.
Instead of speeding up the process, too much entanglement can break down the entire system, researchers report in a paper to appear in Physical Review Letters"
to read the rest of this article click on the link below: http://www.sciencenews.org/view/generic/id/42056/title/Quantum_entanglement_can_be_too_much_of_a_good_thing
Scientist have discoered two moons in the Kuiper Belt made of an ice crystal surface. They could be two ice cubes floating in space. the curious thing is that the compostion of these moons are some what alike to our own moon, making scientist wonder if perhaps our moon could have ice in its core... to read the full article click on the link below: http://www.sciencenews.org/view/generic/id/42280/title/Ice_cubes_in_space
Hello friends! I found a very interesting article concerning a new regulation to prevent ozone depletion. According to a new study rockets that have being launched decades ago have had a significant negative impact to the ozone. If we dont do anything about the ozone and its contaminants by the 2050 the effects will be crucial and might be too late. Actually the global rocket launches deplete ozone layer for no more that a few hundreds of one percent annually, but as the space industry grows and other chemicals decline in the earth atmosphere the issue the percentages are definitely going to increase. Rockets all over the world use liquid, solid and hybrid propellants,which release chlorofluorocarbons that are the responsible for the ozone depleting. Scientist and researchers trust that they are going to find a solution to the problem. I believe that this is a really good idea since we are suffering from climate changes and so many other unusual things. It is time that we so something about it and we start caring about our earth no matter what is it that we have to sacrifice.
I found interesting the blog Violeta posted about drinking hot tea and how it is connected to increased risk of having throat cancer. I’ve been drinking extremely hot tea every morning because they told me that the hotter the tea, the better it is for you to burn fat. I’m really glad I came across this post. Now I know that I have to wait a while for my tea to cool down before actually drinking it. The author suggests waiting at least four minutes before drinking a cup of freshly boiled tea, or more generally allowing foods and beverages to cool from "scalding" to "tolerable" before swallowing.
Hello classmates, I have found an article about the discovery of perchlorate, a hazardous chemical in rocket fuel, found at potentially dangerous levels in powdered infant formula, according to a study (pdf) by a group of Centers for Disease Control scientists. According to the CDC, perchlorate exposure can damage the thyroid, which can hinder brain development among infants. The study points out that when perchlorate-contaminated powdered formula is mixed with water that also contains traces of the chemical, as many drinking water sources around the country do, the final concoction can become particularly harmful to babies. I hope you learned from this news, and if you have any brother, sister or familiar just born be concern about what is happening.
http://www.rsc.org/chemistryworld/News/2009/April/06040901.asp Did salt lake halogens help cause mass extinction? I came across this very interesting article about what might have cause life on earth to be reduced to practically nothing. Now, a team of international scientists has put forward a new idea: that the planet's demise was due, at least in part, to millions of tons of halogenated gases being released by a giant salt lake the size of France. For example, the one that wiped out the dinosaurs is thought to have been caused by the impact of an asteroid on the Earth. But what wiped out 90 percent of life on Earth in the Permian Age some 250 million years ago still remains a mystery. The researchers, from Russia, Austria, South Africa and Germany, took samples from existing salt lakes in Russia and South Africa and measured a number of volatile halogenated hydrocarbons coming off the samples, produced by the action of bacteria and algae. The gases included chloroform, trichloroethene and tetrachloroethene. If proportionate quantities were being released by the Zechstein Sea, the scientists say, it could have had catastrophic consequences for the environment.
Broccoli! Some of us love it, some of us hate it. Unfortunately if you suffer from asthma and hate broccoli, you have a significant problem. This is because scientist have found that eating broccoli produces an increase of antioxidant enzymes that offer protection against pollutants. That means that if you eat broccoli you have a better chance that your airways will be more clear of congestion. To prove this study, doctors gathered a group of 65 people and gave them oral doses of broccoli. Of course, these people where tested before and after, and the after results proved to be effective. So now you know, if you happen to have asthma, broccoli could be your answer.
I remember having watched lots of dinosaur films where long necks ate from the tree branches high above the grounds of this ancient planet. Yet now scientists are arguing that these ways known by man are incorrect. Reading the "Long-necked dinos didn't reach for the skies" article I learned that the scientists from the prestigious "Royal Society" in Britain published a journal saying otherwise. Experiment from the capability of this species to have been able to eat while its neck was in a horizontal position for too long was impossible. Considering the amount of blood they had to pump for their neck's to stretch up as high, it was much more easier for them to eat stretching out their necks horizontally. To get more details on the article, head to the link below: http://news.yahoo.com/s/afp/20090331/sc_afp/sciencedinosaursoffbeat;_ylt=Am4ttILpEDFfQmccvAA6Ds8PLBIF
Could it be possible that even cows are affecting the global warming of today?!? Believe it or not, it is possible. The millions of cows in India are now being part of the contribution to the greenhouse effect.
"India's livestock of roughly 485 million (including sheep and goats) contribute more to global warming than the vehicles they obstruct."
While searching for natural herbs to cease this epidemic pollution, scientists in India have lots to work out, including the "yanking up production from the current 100 million metric tons to 180 million metric tons by 2021-22 to keep pace with growing population and expanding disposable incomes."
The article link is posted below: http://news.yahoo.com/s/time/20090411/wl_time/08599189064600;_ylt=AiHQFTsl0z24LLWe6MUEr0Zpl88F
According to article, Japanese researchers found a way to tune the electronic characteristics of the A-T pairs, meaning charge transport is no longer sequence dependent. They improved the electrical conductivity of DNA through simple chemical modifications. Their work could pave the way for building DNA circuits and self-assembling, DNA-based electronics.
"Before this work, DNA was considered not to be a very electrically conductive material. Its electron mobility is very, very low compared with usual conductive materials,' says Majima. 'Now we can say DNA is no longer so bad for charge mobility materials".
"Together, ships worldwide burned about 217 million metric tons of fuel in 2004, about 5 percent of which was consumed while in port". Check this out! An atmospheric scientist at the University of Oslo in Norway,Stig Dalsoren, and his collegues got together to study the relation between pollution and cargo vessels. In 2004, the world’s merchant fleet included almost 91,000 ships and each weigh at least 100,000 tons. Much of that fuel that was burned was sulfur-rich diesel. The emissions included more than 16 million tons of sulfur dioxide. That gas, plus the various nitrogen oxides, or NOx, gases in the engine exhaust, reacts with moisture in the air to produce acid rain. Worldwide, ships account for about 11 percent of the acid rain due to NOx emissions and about 4.5 percent of the acid rain due to sulfur dioxide emissions.
This article is about a new idea on what set the stage for the rise of oxygen in Earth's early atmosphere. As we all know a decrease in the amount of dissolved nickel in ocean waters beginning 2.7 billion years ago could have stifled methane-producing bacteria and set the scene for oxidation of the Earth’s atmosphere. This finding were very important because it provided a record of how much trace metals were in the oceans when the rocks formed, Konhauser says. The lower nickel content of the ocean waters reduced the activity of the methanogens, so the supply of methane gas diffusing from seawater into the atmosphere decreased over time.
Johana I found your article and is really interesting. I found out that that Triacetone Triperoxide has appearedas a weapon in the middle east, it has being used by suicide bombers in Israel and was chosen as a detonator in 2001. It is one of the most sensitive explosives known, it is sensitive to impact and to temperature which makes it extremely dangerous. Another type of peroxide that is also explosive is hexamethylene triperoxide, which is very sensitive but not as much as the Triacetone Triperoxide. Its explosion produces nitrogen gas but little heat. Guys don’t get exited with this but this explosive could easily be created in any basement laboratory using commercially available materials. All it takes is acetone, hydrogen peroxide, and a strong acid like hydrochloric acid or sulfuric acid. Please guys don’t try to do it you could blow up yourself! Here you can see the diagram of an Triacetone Triperoxide molecule.
There has been a very interesting discovery made in the Antarctic. Researchers from the US and UK have discovered microbes from over one million years ago. One of the most interesting parts of the discovery is that the microbes have survived in isolation, no sunlight or new nutrients helped these microbes survive for that very long period of time. Jill Mikucki of Harvard University and others have done more research and taken samples of the fluids in the glaciers of the Antarctic, they found that the fluids have been trapped in these glaciers between 1.5 and 4 million years ago. The DNA showed that there were many different microbes found in the samples and also showed that there was very little oxygen found. This discovery can be proof that there could be possible life in other unexpected environments such as Mars or Jupiter.
Good evening guys, today I would like to share with you some information about Dynamite, since in the last test I wasn't completely sure about its components and use. So here it goes: Dynamite is an explosive based on the explosive potential of nitroglycerin, initially using diatomaceous earth or another absorbent substance such as sawdust as an adsorbent. Another form of dynamite consists of nitroglycerin dissolved in nitrocellulose and a small amount of ketone. This form of dynamite is similar to cordite. This form of dynamite is much safer than the simple mix of nitroglycerin and diatomaceous earth/kieselgur. This one is mostly used in the mining, quarrying, and construction industries and has had historical use in warfare, but its unstable nature, especially if subjected to freezing, has rendered it obsolete for modern military use. Dynamite has been replaced for combat purposes by military dynamite, a mixture of TNT, RDX, inert binders and anti-freeze agents. Military dynamite has approximately 60% of the strength of nitroglycerin-based, commercial dynamite. While not technically dynamite, it is called this as a slang term. Well after this little review about Dynamite I hope those of you that like me didn't answer the question right, now know a little bit more.
Hi everyone! The article I found this week is about the transformation from carbon dioxide into methanol. This very interesting procedure was discovered by the scientists at Singapore's Institute of Bioengineering and Nanotechnology.
The IBN researchers report that by using organocatalysts, they activated carbon dioxide in a mild and non-toxic process to produce methanol, a widely used industrial feedstock and clean-burning biofuel. Organocatalysts are catalysts that are comprised of non-metallic elements found in organic compounds. Here is the link for those that want to read the whole article. http://www.sciencedaily.com/releases/2009/04/090416102247.htm
Hello Guys! I've read many of the interesting posts you have been putting and I though I might contribute to that. I found some interesting information about gas. Pay attention, this will be very useful when buying gas! Since the mid-1980s engines use fuel injectors with computers to accurately control the air/fuel mix over all temperature and environment ranges. The accuracy of the fuel injectors and computers is based on using the recommended gasoline for that engine. Most cars are designed to burn regular unleaded gas with an octane rating of 87. If the vehicle needs a higher octane rating this requirement is noted in the owner's manual and usually under the fuel gauge and by the gas tank. The quality of gasoline and the additive package usually affect the rate of engine wear more than the octane rating. Basically what this means is that it matters more where you buy your gas than which grade you purchase. The recommended gasoline for most cars is regular 87 octane. One common misconception is that higher octane gasoline contains more cleaning additives than lower octane gas. All octane grades of all brands of gasoline contain engine cleaning detergent additives to protect against engine deposit build-up. In fact, using a gasoline with too high of an octane rating may cause damage to the emissions system. The octane ratings 'regular', 'mid-grade', and 'premium' are not consistent. In the United States, for example, one state may require a minimum octane rating of 92 for premium gasoline, while another may allow an octane rating of 90 to be premium. Check the octane rating on the yellow sticker on the gas pump rather than relying on descriptive labels. Certain high performance engines benefit from use of high octane fuel. For other engines, using a fuel with a higher octane rating than the vehicle requires sends unburned fuel into the emissions system and catalytic converter. This puts unecessary stress on the emissions system. For some vehicles, a rotten egg smell coming from the tailpipe signals use of too-high octane gas. So, as you guys can see, there's absolutely nothing wrong when it comes to buying the cheapest gas. Great news, ah!
Girls...ever gotten into a heated discussion with a guy over who is the weaker sex? Well, I know I have, and the answer to the question, is definitely them. Of course, in order to make such a call I would need the research to back it up, and tadaa now scientist actually have proof. The idea that the male is the weaker sex starts up from the minute he is conceived. In fact, boys are weaker than girls while they are in the uterus and later in life as well. Men are known to have and i quote, "a shorter lifespan, are more susceptible to infections, and have less chance of withstanding disease than women. In short, men are the weaker sex." Obviously boys, you guys aren't exactly the lamest, and the fact that you guys have weaker tendencies are what allows you to take risks that make it hard for anyone to notice.
Hey Guys, I have a question for you: Can a candle burn in zero gravity? think..................................... The answer is yes, however the flame would be a bit different. A flame in zero gravity(microgravity) forms a sphere surrounding the wick. Diffusion feeds the flame with oxygen and allows carbon dioxide to move away from the point of combustion, so the rate of burning is slowed. The flame of a candle burned in microgravity is an almost invisible blue color. The temperature of the flame is too low for the yellow color seen on Earth.
It isn't true that candles burn for a shorter length of time in space. Candles that burn for 10 minutes or less on Earth produced a flame for up to 45 minutes. That's what we need here, right? Instead of Glade's little candles that wear of in 5 minutes.
Space is endless so it is only logical to think that somewhere out there there is a planet just like earth, a solar system just like this one. scientists have been proving this as a fact , recently a planet with very similar characteristics has been found with a star very similar to our sun. So it is very possible that in the next decade or so we may be one step closer to space travel.
read the full article in the link below: http://news.yahoo.com/s/ap/20090421/ap_on_sc/eu_britain_new_planet
The article I found this week is about two highly complex organic molecules detected in space. These are ethyl formate and n-propyl cyanide. The article is explains that atoms and molecules emit radiation at very specific frequencies, which appear as characteristic "lines" in the electromagnetic spectrum of an astronomical source.
The researchers then used a computational model to understand the chemical processes that allow these and other molecules to form in space. Chemical reactions can take place as the result of collisions between gaseous particles; but there are also small grains of dust suspended in the interstellar gas, and these grains can be used as landing sites for atoms to meet and react, producing molecules. Its a very interesting article, if you guys would like to read more here is the link http://www.sciencedaily.com/releases/2009/04/090421080506.htm
Pay attention people: CAN YOU DRINK TOO MUCH WATER? Well, everyone says it is important to drink lots of water, but can it be too much? Sometimes, yes. Drinking too much water can lead to a condition known as water intoxication and to a related problem resulting from the dilution of sodium in the body, hyponatremia. Water intoxication is most commonly seen in infants under six months of age and sometimes in athletes. A baby can get water intoxication as a result of drinking several bottles of water a day or from drinking infant formula that has been diluted too much. Athletes can also suffer from water intoxication. Athletes sweat heavily, losing both water and electrolytes. Water intoxication and hyponatremia result when a dehydrated person drinks too much water without the accompanying electrolytes. However guys don't be alarmed! What's really important is not the amount of water you drink, but how fast you drink it. The kidneys of a healthy adult can process fifteen liters of water a day! You are unlikely to suffer from water intoxication, even if you drink a lot of water, as long as you drink over time as opposed to intaking an enormous volume at one time. As a general guideline, most adults need about three quarts of fluid each day. Much of that water comes from food, so 8-12 eight ounce glasses a day is a common recommended intake. You may need more water if the weather is very warm or very dry, if you are exercising, or if you are taking certain medications. The bottom line is this: it's possible to drink too much water, but unless you are running a marathon, water intoxication is a very uncommon condition. So drink water, it's very important!
Hello guy: Today I was thinking about how interesting is chemistry. I've been working so hard to get a good sense of it and I think I've gotten it...Read this article and think about maybe you agree with me when I say that every day chemists discover something new which is very good because thanks to them we enjoy many of the things that make our lives possible and valuable. I was looking for news when I found this article can you imagine using the same materials that the Mayas tribes used to construct beautiful statues ? I think that would be cool..check this out
The ancient Maya civilisation used a rare type of clay called "palygorskite" to produce Maya blue. Combining structural, morphological and geochemical methods, Spanish researchers have defined the features of palygorskite clay on the Yucatan Peninsula in Mexico. These findings will make it possible to ascertain the origin of the materials used to produce this pigment, which survives both time and chemical and environmental elements.
I found this article very interesting. Its about the discovery of more than a hundred dusty galaxies in the early Universe. Each of these is in the throes of an intense burst of star formation. What is more interesting is that one of these galaxies is an example of a rare class of starburst! If you are interested, you can read the full article: http://www.sciencedaily.com/releases/2009/04/090422085832.htm
Ever felt sad or depressed? Has your self-esteem felt low? Well researchers are now saying that TV can be a way out. In fact, they say that most people turn to television in order to feel loved or be happier. This is because the person feels some type of emotion for a certain fictional character on the TV program, and this helps them to elaborate their feelings of loneliness. This means that although people aren’t truly in the show, and they know that what they are watching isn’t real, they still feel like they found a place where they belong and are comfortable.
I was searching for my next chm blog science article when I happened to encounter an article based on the gene sequence that domestic cattle possess. This article caught my attention because this new discovery of the "first genetic blueprint" may help in many factors. One of the main factors relating to HEALTH.
If you want to catch more details on the article, and the difference between cattle DNA and human gene structure (including how this new discovery can help scientists discover diverse ways of a healthier life; then follow the link posted below:
It is absolutely amazing how the whole chaotic economic situation that is affecting our country at the moment has also affected our whole globe!
The effects have reached one of the largest and poorest countries in the Eastern Hemisphere, "India". This has called India's "private sector firm" to drops it's anterior net profit of 39.1 billion rupees to 35.46 billion rupees. That means it has dropped an amount of around a 9.3 percent.
To read more of the article, and grasp more knowledge of how this scientific energy problem is occurring not only locally but globally visit the link below:
Good afternoon classmates, today i would like to share with you an interesting article i found related with the discovery of a glowing protein found in some exotic marine animals and used widely as a marker in molecular biology has another remarkable property - it can convert light into chemical energy, a phenomenon usually associated with photosynthesis in plants or energy production in bacteria. Experts believe that such a protein is unprecedented in animals.
The green fluorescent protein (GFP) was originally discovered in a species of jellyfish. The molecule emits green light when it is irradiated with blue light and has become ubiquitous in biological research as a 'marker' of gene expression - its gene can be fused with other genes of interest so that when the latter are switched on, GFP is manufactured by the cell and can easily be detected. But no-one knows the actual function of this family of proteins in nature. It is an amazing article, so if you would like to know more about it just go to this page: http://www.rsc.org/chemistryworld/News/2009/April/26040901.asp
Roxi I loved the article about the Mayas architectures, but I would like to know more about it, can you send me the web-site so I can read it completely
Hello everybody!!! Today I was breaking my head studying chemistry and I decided to look for something visual that would help me understand some of the questions that I had. I think I found something very interesting you can read it and maybe it would help you as much as it did to me. Here we go...
ScienceDaily (Apr. 26, 2009) — As researchers push towards detection of single molecules, single electron spins and the smallest amounts of mass and movement, Yale researchers have demonstrated silicon-based nanocantilevers, smaller than the wavelength of light, that operate on photonic principles eliminating the need for electric transducers and expensive laser setups.The work reported in an April 26 advance online publication of Nature Nanotechnology ushers in a new generation of tools for ultra-sensitive measurements at the atomic level.
In nanoelectromechanical systems (NEMS), cantilevers are the most fundamental mechanical sensors. These tiny structures — fixed at one end and free at the other — act like nano-scale diving boards that "bend" when molecules "jump" on them and register a change that can be measured and calibrated. This paper demonstrates how NEMS can be improved by using integrated photonics to sense the cantilever motion.
"The system we developed is the most sensitive available that works at room temperature. Previously this level of sensitivity could only be achieved at extreme low temperatures" said senior author Hong Tang, assistant professor of electrical and mechanical engineering in the Yale School of Engineering and Applied Sciences.
Their system can detect as little deflection in the nano-cantilever sensors as 0.0001 Angstroms — one ten thousandth of the size of an atom
Guys I really recommend you to read this article. I am that kind of person who loves animal and everything about it as well. This articles talks about the use of glycerin as part of a diet for chicken farmers. See the results you will be amazed. I am thinking to start eating glycerin maybe it help me not to gain more weight :)...hope you like it
Agricultural Research Service (ARS) scientists have found environmentally and economically sound uses for the byproducts of biofuel production.
Animal scientist William Dozier, formerly with the ARS Poultry Research Unit in Mississippi State, Miss., has been working with colleagues at the ARS Swine Odor and Manure Management Research Unit in Ames, Iowa, and Iowa State University (ISU) to find ways to supplement animal diets with glycerin. Glycerin, a biofuel byproduct, contains energy-providing nutrients for animals.
Dozier and ISU colleague Kristjan Bregendahl evaluated the use of glycerin supplements in poultry feed. Dozier primarily dealt with broilers, which are chickens raised specifically for meat production, and gave glycerin-supplemented poultry feed to broilers that were 7 to 45 days old.
Dozier evaluated the apparent metabolizable energy (AME) intake—a standard measure of energy—for the study group and for a control group that ate a standard diet. The youngest chicks, aged 7 to 10 days, showed a higher AME intake than the control group. However, the two groups showed no significant differences in the amount of feed they consumed, body weight, or the amount of energy lost in feces and urine (energy excretion).
The second group of broilers, aged 21 to 24 days old, that consumed glycerin feed supplements showed no difference in body weight, energy excretion, and AME. However, their feed intake and the amount of energy provided by the diet intake (gross energy) increased when glycerin supplementation increased. The oldest broilers, aged 42 to 45 days old, showed increases in feed consumption, gross energy, and AME.
Dozier notes that from a nutritional standpoint, this technology can serve as an alternative dietary energy source that could result in lower feed costs. Swine and poultry producers are very interested in supplementing livestock feed with glycerin, in part because the corn grain and soybeans that used to be fed to livestock are now being used for biofuel production. This way, the crops can be used for both biofuels and for livestock feed.
Hellow everyone I would like to share this article with you. It is about the new discovey of two highly complex molecules detected in space. These molecules are ethyl formate and n-propyl cyanide. They were discovered on a hot, dense cloud of gas known as the "Large Molecule Heimat" which contains a luminous newly-formed star.In the past large molecules of diferent sources have being detected oncluding alcohols, aldehydes and acids but these two are the most complex of their kind yet detected in interstellar space. This is very interesting giys if you want to know more about this new and many more you can go to sciencedaily.com
Guys I want you to read this article is so interesting. Imagine a strange organism living for million of years in the glaciers? Well I do not know about you guys but that really scares me.You should keep reading so can find out what is it... Wish you all the best for tomorrow ..Good luck
ScienceDaily (Apr. 17, 2009) — A reservoir of briny liquid buried deep beneath an Antarctic glacier supports hardy microbes that have lived in isolation for millions of years, researchers report April 17 in the journal Science.
The discovery of life in a place where cold, darkness, and lack of oxygen would previously have led scientists to believe nothing could survive comes from a team led by researchers at Harvard University and Dartmouth College. Their work was funded by the National Science Foundation, NASA, and Harvard's Microbial Sciences Initiative.
Despite their profound isolation, the microbes are remarkably similar to species found in modern marine environments, suggesting that the organisms now under the glacier are the remnants of a larger population that once occupied an open fjord or sea.
"It's a bit like finding a forest that nobody has seen for 1.5 million years," says Ann Pearson, Thomas D. Cabot Associate Professor of Earth and Planetary Sciences in Harvard's Faculty of Arts and Sciences. "Intriguingly, the species living there are similar to contemporary organisms, and yet quite different -- a result, no doubt, of having lived in such an inhospitable environment for so long."
"This briny pond is a unique sort of time capsule from a period in Earth's history," says lead author Jill Mikucki, now a research associate in the Department of Earth Sciences at Dartmouth and visiting fellow at Dartmouth's Dickey Center for International Understanding and its Institute of Arctic Studies. "I don't know of any other environment quite like this on Earth."
Chemical analysis of effluent from the inaccessible subglacial pool suggests that its inhabitants have eked out a living by breathing iron leached from bedrock with the help of a sulfur catalyst. Lacking any light to support photosynthesis, the microbes have presumably survived by feeding on the organic matter trapped with them when the massive Taylor Glacier sealed off their habitat an estimated 1.5 to 2 million years ago.
Daynaris your article might soud a little crazy but I believe that is the reality in which we live. When Im alone at home I use to turn on the television not to feel nove necesarily but to not feel alone and this is exactly what your research is about. Very interesting girla.
Mae your comment sounds very interesting. I would like to know more about that but to be honest I do not know that much about stars and all that kind of stuffs but i really liked them. I am going to read the whole article so I can learn more about it because it is very useful and unusual ...
Daymaris I just read your comment. Wow it is completely true I even do that. Sometimes I feel lonely and it really scares me so what i do is turn on the TV so at least I can hear some noise because silence is very deep and it also scares me :(. I did like it ...Keep up the good work guys!!!
I was reviewing some things in chapter one and in the exercises under the topic "Visualizing Topics", I found a particular exercise that called my attention. The exercise is 1.7 from page 31, and even though that's not going to be in the test I thought it was interesting. So here it goes:
ReplyDelete"What is wrong, with the following statement? Twenty years ago an ancient artifact was determined to be 1900 years old. It must now be 1920 years old."
I don't see anything wrong with that statement, but I can't be sure of the answer because it doesn't appear at the back of the book. So what do you guys think?
I though about it and in my opinion as I read the question I figured that maybe at the time it was determined the artifact to have 1900 years old there weren't the instrument as precise as then when it was calculated again. Maybe it was calcullated with another instrument, making this instrument measure more accurant. I'm saying more accurant because it was seen that the artifact really has 1920 years old not 1900.
ReplyDeletehttp://www.miamiherald.com/news/nation/AP/story/866716.html
ReplyDeleteI found this article really interesting. It talks about how the students of Sinclair Community College are using cooking oil as biodiesel fuel. By this, students are not only helping the Community College by saving some money, but also they are giving them the opportunity to learn about engineering and chemistry. This alternative fuel is made from oilseed crops (such as canola or soybean), or from used vegetable oil. They can also be made by other fats. The best part about this discovery is that this concept is being driven as an environmental awareness!
Viole, I read the article you found out and it is very interesting how these students are using a new way of energy to continue using our cars. I had heard about a discover like this one some time ago while I was watching Discovery Channel, and I am glad people is more concerned about our planet, since we are looking for energy alternatives that might help it to survive.
ReplyDeleteGuys I also found an interesting article called:
Nano-tetherball Biosensor Precisely Detects Glucose
http://www.sciencedaily.com/releases/2009/01/090122110652.htm
This one is about the creation of a precise biosensor for detecting blood glucose and potentially many other biological molecules by using hollow structures called single-wall carbon nanotubes anchored to gold-coated (nanocubes). The article caught my attention because with this new biosensor, people who suffer from Diabetes would be continuously monitored for glucose in the blood. In my case is more personally to know about these kinds of new scientific methods since my dad is diabetic and I could become one too. So I hope the article is of your interest! :)
Hey guys!!! I found this article while I was doing a research for other class. I found it very interesting even though it is kind of hard to understand because we have not covered that part of chemistry yet but you can check it out and see what you think:
ReplyDeleteScientists at Penn State University and the Virginia Commonwealth University have discovered a way to produce hydrogen by exposing selected clusters of aluminum atoms to water. The findings are important because they demonstrate that it is the geometries of these aluminum clusters, rather than solely their electronic properties, that govern the proximity of the clusters' exposed active sites. The proximity of the clusters' exposed sites plays an important role in affecting the clusters' reactions with water.
http://www.sciencedaily.com/releases/2009/01/090121211340.htm
ReplyDeleteI found an article that allowed me to better understand the reason why men can lose weight faster than women. Not only do they have a faster metabolism, but now a study shows that they can also control their hunger better than women. Men and not women are able to control their brain’s response to their own favorite foods. The lead author of the study, Gene-Jack Wang, stated “Our findings may help us understand the neurobiological mechanisms underlying the ability to control food intake, and suggest new pharmacological methods or other interventions to help people regulate eating behavior and maintain a healthy weight,” When both men and women were asked to inhibit their response to food, they described themselves as less hungry than when they weren’t trying to inhibit their response. “Even though the women said they were less hungry when trying to inhibit their response to the food, their brains were still firing away in the regions that control the drive to eat,” Wang said. “In contrast, men’s brain activity decreased along with their self-reports of hunger during the scan when they were asked to keep their hunger in check.” I find it ironic how women obsess more over there weight than men do, and yet they have more trouble keeping it off.
Hy guys I found this article really interesting. This is a new scientific Imaging method that is allowing scientist to see Cell Molecules more clearly! This electron microscopy is the most sophisticated tool to see objects at the size of molecules and cells.This microscopy uses a micro fluid device with elecron transparent(Liquid STEM) windows to allow the imaging of the cells. in liquid.
ReplyDeleteI hope you like it and learn something from it, most for the ones in the medical field.
http://www.sciencedaily.com/releases/2009/01/090119210535.htm
Maelys, i wish we could use that new technique in our lab :) Well, this new object is going to be great for new discoveries since the image of the molecules will have a better resolution and faster speed!!!
ReplyDeleteI found a really interesting article about a new cement that can help bones to regenerate. This material is Silicate and is going to replace calcium phosphate cement. Silicate is a more convenient material due to the fact that it sets in just five minutes, differently from calcium phosphate that takes over an hour. Scientist say that Silicate will encourage the growth of osteoblasts (the cells that are responsible for regenerating bone tissue) this might open the possibility of its use as in implant material.
ReplyDeleteFuture research of this new regenerator is going to be about improving its injectability and durability.
If you want to read the complete article here is the link. http://www.rsc.org/Publishing/ChemTech/Volume/2009/03/silicate_cement.asp
Daymaris Alvarez:
ReplyDeleteI read the blog that Maelys posted and I was very interested in the topic. One of the things that caught my attention the most was how quicly the new cement (Silicate) could set in. It is amazing how scientist can create and then modify different types of materials, such as the cement used to help regenerate bones. For instance, in the earlier years they did indeed use calcium phosphate, but now they have been able to replace it with this much quicker material.
According to this article, scientist created a tiny sensor that monitors electrical conductivity and allows them to detect hydrogen peroxide in explosives. This is very good its not just another discovery, but a discovery that actually helps the human kind from terrorist.
ReplyDeletehttp://www.sciencedaily.com/videos/2008/0704-sniffing_out_bombs.htm
Dinosaur Fossils Fit Perfectly Into The Evolutionary Tree Of Life, Study Finds;
ReplyDeletehttp://www.sciencedaily.com/releases/2009/01/090126082351.htm
A recent study by researchers at the University of Bath and London’s Natural History Museum has found that scientists’ knowledge of the evolution of dinosaurs is remarkably complete.
This is an article I found, and I enjoyed reading about it, since I love this kind of history. I hope you enjoy it too ..
This comment has been removed by the author.
ReplyDeletehttp://cosmos.bcst.yahoo.com/up/player/popup/?rn=3906861&cl=11872954&ch=4226722&src=news
ReplyDeleteThis is an associated press video and it talks about how the temperature in prehistoric times chemicaly altered the metabolism of cold blooded species. It specifies a 45 Ft snake which closely resembles a modern day Boa constrictor but since the earth temperature was much higher in that era the snale was able to grow much bigger than it can today. So this find makes you think about our current global warming predicament and how it can affect the animals gradually possibly allowing these snakes to once again reach these massive sizes.
I found it very interesting , I hope you all do too.
A new camera now allows us to see the emissions of green house gases being released into the atmosphere. It is really surprising to see how much of it comes out of our cars!
ReplyDeletego ahead and watch the quick documentary on the following link :
http://cosmos.bcst.yahoo.com/up/player/popup/?rn=3906861&cl=11872784&ch=4226724&src=news
Hayabusa, a Japanese Space Probe has its capsule return planned for June 2010!
ReplyDeleteThis probe has been launched since may 2003, and its hot ION ENGINE has been operating for none other than 31,000 hrs. Could you imagine? If this space probe brings back samples of the asteroid, Itokawa; then it will be the FIRST one to do so....if you guys are interested in reading some more facts on this article check out the link below ^-~:
http://news.yahoo.com/s/space/20090205/sc_space/beleagueredjapaneseasteroidprobeheadedhome;_ylt=ApI7l7BeeOOJdt_CVADqMGMPLBIF
I found an amazing article that reads the following: "Your Breath Could Be Recycled into fuel" I was astounded as I found out how Origo Industries has developed this so called, Eco Box, that was originally designed to reduce emissions of Carbon from vehicles; to becoming the first technological object to recycle breaths of passengers at the Liverpool John Lennon airport into biofule.
ReplyDeleteI found it to be very interesting, thid surely helps us save a lot of energy. I hope the experiment is a true SUCCESS!!! :)
To read more you can head to this link:
http://news.yahoo.com/s/livescience/20090205/sc_livescience/yourbreathcouldberecycledintofuel;_ylt=Au.5DEzEiyzSpZXbqCkJevAPLBIF
http://www.chemeurope.com/news/e/95605/
ReplyDeleteThis news is about how the Agilent Technologies Inc. and the National University of Ireland announced an opening of a Biological Mass Spectrometry Facility! This facility focuses on different interesting things such as the functional genomics, proteomics, lipidomics and metabolomics research. If you are interested, check it out in the link above!
US scientist have discovered a way to produce hydrogen in small amounts. Great! The team was able to see that aluminium clusters' have the ability to split water molecules and release hydrogen. However, only clusters of certain sizes and geometries can perform the hydrogen-forming reaction. This is a very interesting article if you want to keep reading about it heres the link.
ReplyDeletehttp://www.rsc.org/chemistryworld/News/2009/January/28010901.asp
Have you ever heard about the mortal virus the Ebola? Well guys researches from the University of Pennsilvannia have discovered why this virus is so much powerfull. It desables a cellular protein called tetherin wich blocks the spread of virus from cell to cell.This new discovery of how tetherin works will allow scientist to inhibit this interaction and create an antiviral response and recover.The article is super interesting, this virus(Ebola) kills 90%percent of people infected.Her's the link:http://www.sciencedaily.com/releases/2009/01/090127152838.htm
ReplyDeleteDrinking too much water can kill you
ReplyDeleteI actually read this in pg 147 of our text book and I found it very useful. Not drinking enough water can lead to dehydration and because 60% of our body is composed of water, we could die within three days of not drinking water. But it turns out that excess water consumption, which can lead to hyponatremia (a condition in which the concentration of sodium ion in the blood is too low) is more dangerous than dehydration. For example, Hillary Bellamy, a first time marathon runner, died from hyponatremia-induced swelling of the brain. The normal blood sodium level is between 135-145 mM, and a concentration below 120 mM can be critical. To help prevent overhydration in marathon events, the number of water stations has been reduced.
Daymaris Alvarez...
ReplyDeleteok, so we all thought multivitamins were suppose to be helpful right? Wrong! In a study that was conducted recently, scientist found that multivitamins really did nothing to impact heart disease or cancer. In fact, throughout a period of eight years 162,000 women were used to put the vitamins to the test, and the results were sort of shocking. Some of the women after the eight years were diagnosed with cancer, cardiovascular problems, and there were even some deaths. Although this is definetly a shock to many, some scientist claim that this has been known for a while. But now there's proof, and the eight year long study helped to bring out the truth. So basically, doctors are saying to just eat your fruits and veggies, and forget the vitamin supplement.
http://www.livescience.com/health/090209-multivitamins.html
I was reading a latest article "Fossils Reveal Truth About Darwin's Theory" and found it to be interesting to share. This week is the 200th anniversary of the well known father of the theory of evolution Charles Darwin.
ReplyDeleteDue to this press releases are ready to combat false claim on Darwin's theory. As evidence for this theory transitional creatures should resemble intermediate ones.
For more information on this article you can follow this link below:
http://www.livescience.com/animals/090211-transitional-fossils.html
"They can't match Harry Potter yet, but scientists are moving closer to creating a real cloak of invisibility." I ound this really interesting article on how scientist at Duke University can actually block microwaves rom reaching an object and doing so create an invisibility cloak around the object.
ReplyDeleteI was really amazed at how advanced science is getting as I read this article, If you guys are interested as well you can find the full article in the following link :http://news.yahoo.com/s/ap/20090115/ap_on_sc/sci_cloak_of_invisibility;_ylt=AhadJr5X_Q6lv5qQZSV52IMszJV4
Possibilities that mars can actually sustaine life just went up, as scientist have found evidence of methane on mars! the surprising thing is that it turns out that Mars' mechanism for producing geothermal gasses is a lot better than the one on earth, but there are a lot of factors to consider that according to this article can only be deciphered by an actual human landing on mars .... to read more visit:
ReplyDeletehttp://dsc.discovery.com/news/2009/01/15/mars-methane-life-02.html
As most of you guys know I'm in the PW class, and for the symposium we are investigating about happiness. We each picked a subtopic to work on, that is related to happiness. I chose to investigate about the chemicals that our brain produces when we are happy and how our brain behaves in general.
ReplyDeleteI found out that serotonin is the chemical that makes us feel happy. It is a neurotransmitter that affects our mood. It lowers our stress hormones and boosts our immune system. It's chemical formula is C10H12N2O. It's an organic compound (we'll learn about them in organic chemistry).
Antidepressants are made out of chemicals that affect our serotonin levels.
There is a new method for detecting 23 different drugs and medicine in a saliva sample! Isn’t that incredible? It was discovered by a team of scientists from the Institute of Legal Medicine at the University of Santiago de Compostela. If you want to read more, come check it out at this page: http://www.sciencedaily.com/releases/2009/02/090211122532.htm
ReplyDeleteThe article i found this week is about a new class of materials that are expected to be of special use as catalysts. A team of chemists working at Arizona State University has designed and synthesized the material. "If you can develop more open materials like this one, the range of things you can do chemically will be greatly increased. A lot of chemists have been striving for something exactly like this for some time now, so this is a moment that everyone's been waiting for," O'Keeffe said. The article is very interesting....
ReplyDeletehttp://www.sciencedaily.com/releases/1999/11/991119075722.htm
Scientists have found a way to read minds with the purpose of opening the world of choices for the children that can't speak or move...Guys scientisct can actually know what we are thinking with this new technique.
ReplyDeletecheck this out:
http://www.sciencedaily.com/releases/2009/02/090210092730.htm
Maelys I went to check out the article about reading the mind and is incredible what can be done with this new technique. Children that can not speak or move, now have the capacity of letting know others what they are thinking, giving them an opportunity of expression not imaged before.
ReplyDeleteI also got impress by the article saying that drinking to much water can caused death, since I am the kind of person who drink to much water. Now I am more concern about how much water I consumed.
I was reading an article that caught my attention. It made me think about how amazing is chemistry science and all the good things that we can have out it. Now I am more excited to keep studying it!!!. Well the article title is: "Two-step Chemical Process Turns Raw Biomass Into Biofuel".It is kind of complicated but as you read toward the end you will get the point..Read it !!!
ReplyDeleteScienceDaily (Feb. 20, 2009) — The key to the new process is the first step, in which cellulose is converted into the "platform" chemical 5-hydroxymethylfurfural (HMF), from which a variety of valuable commodity chemicals can be made. "Other groups have demonstrated some of the individual steps involved in converting biomass to HMF, starting with glucose or fructose," says Ronald Raines, a professor with appointments in the Department of Biochemistry and the Department of Chemistry. "What we did was show how to do the whole process in one step, starting with biomass itself."
Raines and graduate student Joseph Binder, a doctoral candidate in the chemistry department, developed a unique solvent system that makes this conversion possible. The special mix of solvents and additives, for which a patent is pending, has an extraordinary capacity to dissolve cellulose, the long chains of energy-rich sugar molecules found in plant material. Because cellulose is one of the most abundant organic substances on the planet, it is widely seen as a promising alternative to fossil fuels."This solvent system can dissolve cotton balls, which are pure cellulose," says Raines. "And it's a simple system—not corrosive, dangerous, expensive or stinky."
This approach simultaneously bypasses another vexing problem: lignin, the glue that holds plant cell walls together. Often described as intractable, lignin molecules act like a cage protecting the cellulose they surround. However, Raines and Binder used chemicals small enough to slip between the lignin molecules, where they work to dissolve the cellulose, cleave it into its component pieces and then convert those pieces into HMF.
In step two, Raines and Binder subsequently converted HMF into the promising biofuel 2,5-dimethylfuran (DMF). Taken together, the overall yield for this two-step biomass-to-biofuel process was 9 percent, meaning that 9 percent of the cellulose in their corn stover samples was ultimately converted into biofuel.
"The yield of DMF isn't fabulous yet, but that second step hasn't been optimized," says Raines, who is excited about DMF's prospects as a biofuel. DMF, he notes, has the same energy content as gasoline, doesn't mix with water and is compatible with the existing liquid transportation fuel infrastructure. It has already been used as a gasoline additive.
I was reading an article that caught my attention. It made me think about how amazing is chemistry science and all the good things that we can have out it. Now I am more excited to keep studying it!!!. Well the article title is: "Two-step Chemical Process Turns Raw Biomass Into Biofuel".It is kind of complicated but as you read toward the end you will get the point..Read it !!!
ReplyDeleteScienceDaily (Feb. 20, 2009) — The key to the new process is the first step, in which cellulose is converted into the "platform" chemical 5-hydroxymethylfurfural (HMF), from which a variety of valuable commodity chemicals can be made. "Other groups have demonstrated some of the individual steps involved in converting biomass to HMF, starting with glucose or fructose," says Ronald Raines, a professor with appointments in the Department of Biochemistry and the Department of Chemistry. "What we did was show how to do the whole process in one step, starting with biomass itself."
Raines and graduate student Joseph Binder, a doctoral candidate in the chemistry department, developed a unique solvent system that makes this conversion possible. The special mix of solvents and additives, for which a patent is pending, has an extraordinary capacity to dissolve cellulose, the long chains of energy-rich sugar molecules found in plant material. Because cellulose is one of the most abundant organic substances on the planet, it is widely seen as a promising alternative to fossil fuels."This solvent system can dissolve cotton balls, which are pure cellulose," says Raines. "And it's a simple system—not corrosive, dangerous, expensive or stinky."
This approach simultaneously bypasses another vexing problem: lignin, the glue that holds plant cell walls together. Often described as intractable, lignin molecules act like a cage protecting the cellulose they surround. However, Raines and Binder used chemicals small enough to slip between the lignin molecules, where they work to dissolve the cellulose, cleave it into its component pieces and then convert those pieces into HMF.
In step two, Raines and Binder subsequently converted HMF into the promising biofuel 2,5-dimethylfuran (DMF). Taken together, the overall yield for this two-step biomass-to-biofuel process was 9 percent, meaning that 9 percent of the cellulose in their corn stover samples was ultimately converted into biofuel.
"The yield of DMF isn't fabulous yet, but that second step hasn't been optimized," says Raines, who is excited about DMF's prospects as a biofuel. DMF, he notes, has the same energy content as gasoline, doesn't mix with water and is compatible with the existing liquid transportation fuel infrastructure. It has already been used as a gasoline additive.
This article describes the discovery of the first stable complex of calcium (I). As you know this is a highly unusual structure! The scientist Matthias Westerhausen found that two calcium (I) ions can be stabilized by inserting an arene group between them. I recommend you read this because it will open you mind and explain several things about this new complex!
ReplyDeleteCheck it out in this page: http://www.rsc.org/chemistryworld/News/2009/February/20020901.asp
Guys scientists have discovered a fosil from about 150 million years ago, it is a dinosaur who was about to become a bird. This discovery is one that proves Darwin's theory of evolution. Its scientific name is Thermopolis specimen of Archaeopteryx lithographica. This discovery was possible with the use of the world most powerful Xray machine which uncovers details of the dinosaur's bones. These ray X work a thousand time better than what we could do with any regular Xray machine.
ReplyDeleteIts really interesting if u will like to read more details about the article you can use this link:
http://www.sciencedaily.com/releases/2009/02/090215151858.htm
I found a great article about solar power plants. It talks about new ways on how to use renewable resources we have at hand. One of those ways is that molten salts can store the sun's heat during the day and provide power at night... its cheaper! I found it very interesting but if any of you guys want to learn more about it heres the link:
ReplyDeletehttp://www.sciam.com/article.cfm?id=how-to-use-solar-energy-at-night
Reading some latest news I encountered thi very interesting article on some ancient artifacts found in Denver, Colordao. This discovery was a total accident, as are a certain portion of prestigious discoveries found in the sciene field. As some landscappers were escavating a simple pond they happened to stumble upon 13,000 year old tools used by Clovis people. These hunter-gatherers lived during the ice age period, and still remain a puzzle to antrhopologists. Still these landscapers found 83 of these hunters ancient tools. The tools proved to be very significant carrying along with them blood and other protein residue with a biochemical analysis which revealed how they were used. For example they were used to butcher special sorts if animals such as camels, sheeps, bears, and horses. An innovation to the previous facts discovered by anthropologists. If you guys are interestinhg in reading this very insightful article the ling is posted below:
ReplyDeletehttp://news.yahoo.com/s/ap/20090226/ap_on_sc/ancient_tools;_ylt=AnyV7t2RAbt25_3gZrnS3K8PLBIF
Another very interesting article I found, and thought I should share it is called, "Finding genes that make teeth grow all in a row". I was amazed at the scientific discoveries that are being found when we least expect it! The article covers how there is a specific gene that was found to be the one that prevents addtional teeth formation in species who are destined to a limited set. Scientists used mice that lacked this gene to bread, and discovered that the rodents would later develope a new set of teeth next to their first molars. This new discovery could help us in future medical procedures such as tooth loss, gum disease as well as limiting imperfect procedures such as implants, and dentures.
ReplyDeleteTo check out more of this article, the link is posted below:
http://news.yahoo.com/s/ap/20090227/ap_on_he_me/med_making_teeth_grow;_ylt=AqlMR_YC0DdftXTh66u7VBkPLBIF
The article i found for this week is about solar power. US researchers are lookinf for affordable solar energy solutions. Currently energy from traditional silicon solar cells is more than twice as expensive as energy derived from wind and natural gas. The team analysed a range of possible alternative photovoltaic materials in order to find something. 23 promising semiconducting materials were assessed, and 12 were found to have the capacity to meet or exceed the global energy need, which means that work has been done, and they really want to make this, because its better for us and planet earth. The articles link is:
ReplyDeletehttp://www.rsc.org/chemistryworld/News/2009/February/26020901.asp
http://www.medicalnewstoday.com/articles/140759.php
ReplyDeleteNew Test for Detecting Fake Organic Milk - Journal of Agricultural and Food Chemistry
In the United States, it is illegal to falsely advertise a product. But in Germany, since demand for organic milk rose by almost one-third in just one year, crooks are taking advantage of the situation by marketing increasing quantities of fake organic milk. That situation created a need for better tests to detect the fraud. Before this new test, no one was 100% sure if the product they were buying was truly organic. The scientists developed a test based on an analysis of milk fat for the ratio of stable isotopes of carbon. They used it to identify milk samples from cows raised on feed containing a higher ration of maize. Such a feeding regimen is typical of conventional milk production. Organically raised cows are fed less maize but more pasture. In addition, they found that organic milk was a higher alpha-linolenic acid content than conventional milk
This article describes the new offer that chemists found on a new hydrogen purification method. As you may know, before we can use hydrogen as a fuel cells we need to purified it; but the methods that we use, are not good enough. However the chemist Mercouri G. Kanatzidis with his group developed a class of new porous materials that can separate in a very effective way hydrogen from complex gas mixtures! Don’t forget to check it out!! http://www.sciencedaily.com/releases/2009/02/090215151755.htm
ReplyDeleteDo you guys remember the things we talked in Chemistry the other day about "global warming"? well Dr. Okafor sent me a couple of articles that were really interesting so I wanted to share them with you guys.
ReplyDeleteI really liked one in which it stated that those people who provided Al Gore with all of his facts and charts are backing up and saying they are are not sure sure of whether CO2 can be considered a greenhouse effect or not. It's amazing how Al Gore went ahead and started his movement without proof of what he was saying. He even used false pictures to say that global warming is melting the ice sheets.
I also watched a video in you tube in which a group of English scientists talk about 35 mistakes they found in Al Gore's video "An Inconvenient Truth". I can remember one of the mistakes of the video more than the others because it's really something; in his video Al Gore says that the sea rise will rise by 600 feet, and in reality it will rise aproximately 6 feet. It is clear that Al Gore is NOT a scientist!
In my opinion this whole global warming movement is a business. The carbon credit thing is a business. It is ok to pullute the planet if we pay for it? Besides who are we paying?
Here are the links to all of this information:
http://www.youtube.com/watch?v=kuHoTCsB3Vw
http://www.youtube.com/watch?v=k4gKy2GUoEw
http://www.iterasi.net/openviewer.aspx?sqrlitid=udkitl5pvecqcynzvb11fg
http://dotearth.blogs.nytimes.com/2009/02/23/gore-pulls-slide-of-disaster-trends/
Hello everyone:
ReplyDeleteI found this article about the discovery of doctors of a better way of using x-rays in order of the benefit of the community.Dark-field(how is called now) images provide more detail than ordinary x-ray radiographs and could be used to diagnose the onset of osteoporosis, breast cancer or Alzheimer's disease, to identify explosives in hand luggage, or to pinpoint hairline cracks or corrosion in functional structures.
It would be great if you guys go to the page and can check it..
http://www.news-medical.net/?id=34546
I also would like to say that I loved the presentations tonight, in special the experiments. I had fun with all of you guys and I also learned a lot about African-American Scientist, it was good to enjoy this event as a group.
Hi guys:
ReplyDeleteI wanted to start saying that I also liked the presentation last night. I think we saw a different side of each of us. I think everyone did a good job. The experiment were amazing and the best part of the night.Thanks to all my classmates who contributed ant to Dr. Okafor for those last words.
Now to the real thing. I found a very interesting article about the discovering of Rhodium quinones. Dr. Sweigart create this compound with the mixture of hydroquinone and Rhodium. The article mentions some properties of both of these substances. It also states some of the uses of the catalyst formed like for example its use in the making of drugs for diseases like cancer, depression among other very useful uses.
Check it out!!!! I think is really interesting and instructive.
http://www.theallineed.com/chemistry/06031507.htm
http://climatesanity.wordpress.com/criticisms-or-al-gores-an-inconvenient-truth/
ReplyDeleteI was reading more about Al Gore and the criticism he faces on his film An Inconvenient Truth, and I found the arguments against him to be very interesting. There were nine in total but only two really caught my attention. In his documentary, Al Gore suggests that Hurricane Katrina was caused by global warming. He even stated: “What changed in the US with Hurricane Katrina was a feeling that we have entered a period of consequences.” It’s ridiculous to attribute one natural disaster to global warming. He also claimed that polar bears had drowned due to the disappearance of artic ice when in reality it was due to a very violent snow storm. He believes that polar bears can become extinct due to global warming; and experts believe that this is pure exaggeration. Experts have proved that polar bears have survived periods of less Arctic ice than exists today. I was also watching a video on you tube which shows us how Al Gore twisted the truth in many charts and graphs he used to prove his point. “There’s a difference between science and science fiction.” Here’s the link to the video: http://www.youtube.com/watch?v=XU8jyz9Acy0
Science advances everyday in gienat leaps , we can see this clearly by all the new tachnology that becomes available to the public. What is surprising is how close we are coming to making scince fiction a reality. Engineers are building a Space rocket that behaves like a jet. In a matter of years traveling into space will be as easy as traveling by jet to another city. I found it really interesting how this new jet will work and how easy it'll make outer space travel ...
ReplyDeleteYou guys can check it out here:http://www.newscientist.com/article/dn16682-airbreathing-planes-the-spaceships-of-the-future.html
"THE rings left behind by spilled coffee have inspired a new way to make ultrathin coatings for LCD and plasma flat-screens.
ReplyDeleteIn LCDs, transparent conductive coatings are used to form an electrode on the surface of the screen, while in plasma TVs they provide a shield that prevents electromagnetic fields from straying. The traditional techniques for making such coatings include sputtering a fine layer of indium tin oxide onto the surface. ITO is highly conductive and transparent to visible light, but the process is expensive, requiring clean rooms and vacuum chambers......" Read more at http://www.newscientist.com/article/mg20126975.500-future-tv-screens-seen-in-coffee-stains.html
Parents can pick the gender, and traits their unborn child will have to their liking new tachnology allows this to done in just a simple visit to the doctor's office. This issue has become very controversial as of late as some find it unethical to tamper with the child's traits like such, but it really is amazing if we focus on the scientific aspect.
ReplyDeleteyou guys can go ahead and read more if you like in the following article "Designer Babies"
http://www.albertmohler.com/blog_read.php?id=3311
http://www.rsc.org/Publishing/ChemTech/Volume/2009/04/sunburn.asp
ReplyDeleteStudies have shown that too much sun exposure is actually more dangerous than previously believed. And lighter skinned people are more at risk than darker skinned people to develop skin cancer. Over 70,000 people in the UK are diagnosed with skin cancer each year and sunburn is a contributing factor. For this reason, Andrew Mills and colleagues from the University of Strathclyde, Glasgow, have created what they claim is a 'simple, inexpensive, unambiguous sunburn indicator' that can be tuned to different skin types. 'It is the simplicity of the chemistry, and its ability to work on all skin types, that makes this research so effective,' comments Peter Robertson, an expert in photocatalysis at the Robert Gordon University, Aberdeen, UK.
Hi, today i found an article about a technique to electrically detect individual DNA bases cut from a single strand of DNA that has been developed by researchers in the UK. The technique works by breaking up DNA strands into their component nucleotide bases, and passing them through a single chemically and genetically engineered protein "nanopore" mounted on a lipid bilayer... Sounds very interesting!!!
ReplyDeleteHeres the link, for those that want more info abou the article...
http://www.rsc.org/chemistryworld/News/2009/February/22020901.asp
Good afternoon classmates!!!
ReplyDeleteAs we all know we gotta write about an article every week.I was trying to find out what is up to chemistry.Among all I read this is the one I believe is more interesting.. See if you agree with me:
"Recent attention in the literature has focused on methods to self-assemble nanometer- and micrometer-sized particles into highly ordered structures for use in photonic,(1, 2) electronic,(3) and biomedical applications.(4) For example, binary nanoparticle superlattices(2, 5) and ionic colloidal crystals(6) have been reported with structures reminiscent of atomic crystals, e.g., NaCl and CsCl. Complex phases, such as the double diamond lattice,(7) have been synthesized for covalently linked systems of tetrapods. Other methods to assemble nanoparticles have relied on anisotropic interactions, e.g., dipole moments(8-11) and surface patterns,(12-16) to create wires,(8, 10, 17) free-floating sheets,(11) and two-dimensional crystals.(12) In previous work, we examined two methods to assemble particles into ordered arrays and other complex structures using anisotropic interactions: “patchy particles”(16) and “tethered nanoparticles”.(18) Patchy particles are nanometer- or micrometer-sized particles with directional interactions conferred via patches on their surface. The location of patches dictates the local ordering and structure, ranging from square packed sheets(16) to the diamond lattice.(19) Tethered nanoparticles are hybrid nanoparticle−polymer building blocks where nanoparticles are bonded as “headgroups” to immiscible polymer tethers to create a new type of amphiphile. The immiscibility between the nanoparticle and polymer tether facilitates microphase separation into bulk periodic structures similar to those observed in block copolymers, including phases such as lamellar sheets,(20-22) ordered cylinders,(20-22) and the double gyroid,(21, 23) but with additional ordering arising from the nanoparticle shape".
http://www.sciencedaily.com/releases/2009/03/090305080139.htm
ReplyDeleteI was reading this article and I found it really interesting how particles of carbon known as buckyballs may be able to keep the nation's water pipes clear. A buckyball, or C60, is one shape within the family of tiny carbon shapes known as fullerenes. Bulkyballs hinder the ability of bacteria and other microorganisms to accumulate on the membranes used to filter water in treatment plants. Therefore, coating pipes and membranes with these nanoparticles may prove to be an effective strategy for addressing one of the major problems and costs of treating water. According to Chae, the addition of buckyballs to treatment membranes had a two-fold effect. First, treated membranes showed less bacterial attachment than non-treated membranes. After three days, the membranes treated with buckyballs had on average 20 colony forming units.
http://www.sciencedaily.com/releases/2009/03/090309162125.htm
ReplyDeleteHey guys, I apologize for the fact that I have not written or commented much on the blog. However, I found this interesting article related to coral reefs and carbon dioxide. I happen to enjoy the beach much and love the water, so it caught my attention. It mainly states that higher temperatures in our oceans and relatively higher amounts of carbon dioxide absorbed by the oceans are killing coral reefs. It also talks about coral bleaching which results in the loss of algea. It is also said that algea is essential for the healthy growth of coral colonies. At the end of the article the researchers start talking about "how we" are the ones causing all these issues, but I partly question this statement. Is it really all of our fault or are there other factors that can be adding to our harm? Is it really all of our fault?
I happened to stumble on a pretty interesting article named, "5 Facts About Friday the 13th". The topic rewviews five of the favorite friday the 13th facts in connection to prominent historical figures. Some of these are ex- president Franklin D. Roosevelt, ex-president Herbert Hoover, Napoleon, Mark Twain, and even the bible with the thirteenth guess at the last supper who betrayed Jesus. Fear of this date is one of the well-known scientific myths. Its scientific name is paraskavedekatriaphobia, and Triskaidekaphobia is the fear of the number 13th. I find this fear to be of people who happen to be superstitious, but some believe numbers have a specific interelation with individuals.
ReplyDeleteTo read the article visit this link below:
http://www.livescience.com/culture/090312-friday-the-13th.html
I read an article on the scent of fear on us humans, and thought I should post it. The article explains how an experiment was conducted with both men and women to collect data on the rsults of our reactions to different smells coming from others. The males were used as the sweat donors( due to the scientific fact that they have larger apocrine sweat glands than females). The females were then chosen as the respondants. There were factors applied to the testing; the males would only use scent-free soaps, as well as a special diet that avoided odorous food. For the testing, the males had gauze pads placed under their axilla's while they would watch diverse films. Then the females had the gauze pads from the males placed under their noses as they watched the faces of the donors in correspondance to the flms.
ReplyDeleteTo read this article and find out more interesting facts head to the link below:
http://www.livescience.com/health/090310-fear-scent.html
Guys there is a therapy that may help and benefit kids with authism. This theraphy is based on the application of high concentrations of oxigen at increased athmospheric tempreratures, this is called hyperbaric treatment. One theory about this tratment is that the oxigen can reduce the inflamation and improve the flow of oxigen to brain tissue. Kids that received the treatment showed significant improvement in overall funcional, here we can mention reception language, social interaction, eye contact and sensory or congnotive awareness. The hyperbaric treatment have show significant improvement in the behavior of authist kids, but is not yet proved that the treatment is long lasting.
ReplyDeleteIf you want to read more about click here:
http://news.bbc.co.uk/2/hi/health/7940149.stm
I was very impressed with this article i found about killing breast cancer cells. Its time for scientist to find the right medication, and i think they did it. In Brown University chemists targets a class of breast cancer cells known as Her-2 tumor cells, a unique, dumbbell-shaped twin nanoparticle. It will be very good if this gets to work!. Heres the link if any of you guys want to continue reading...
ReplyDeletehttp://www.sciencedaily.com/releases/2009/03/090310120353.htm
http://www.sciencedaily.com/releases/2009/03/090315155112.htm
ReplyDeleteSea Level Rise Due To Global Warming Poses Threat To New York City
Although there are different theories on global warming, most scientist are looking for ways to slow this down. A study conducted by Jianjun Yin, a climate modeler at the Center for Ocean-Atmospheric Prediction Studies (COAPS) at Florida State, said there is a better than 90 percent chance that the sea level rise along this heavily populated coast will exceed the mean global sea level rise by the year 2100. "The northeast coast of the United States is among the most vulnerable regions to future changes in sea level and ocean circulation, especially when considering its population density and the potential socioeconomic consequences of such changes," Yin said. "The most populous states and cities of the United States and centers of economy, politics, culture and education are located along that coast."
Daymaris Alvarez says....
ReplyDeleteEver wanted to shed a couple pounds? Well, according to scientist, studies show that there is an inverse correlation between how much vitamin D you consume and your weight. Unfortunately, this study has only been done for those of us within the ages of 14-19. Scientist have not yet been able to prove that weight is truly connected to the vitamin D consumption of the teenager, but they do say that there's some sort of connection. In fact, young black teen girls who are known to consume less vitamin D, are in the heavier weight sets. On another hand, young white males are the ones closes to the intake necessary and they are in fact leaner. So, although there is not 100% proof, there is a certain reasoning behind the study.
Daymaris Alvarez says....
ReplyDeletelink to article above: http://www.sciencedaily.com/releases/2009/03/090312140905.htm
Hello classmates, this weekend i found an article about the Shewanella oneidensis bacterium breaks down metal to chemically extract oxygen. Researchers are studying some common soil bacteria that “inhale” toxic metals and “exhale” them in a non-toxic form. The bacteria might one day be used to clean up toxic chemicals left over from nuclear weapons production decades ago. It is a very interesting article, i recomand you guys to read it!!!!
ReplyDeleteHeres the link
http://www.sciencedaily.com/releases/2009/03/090316151031.htm
Hello everyone, I have found an article that talks about how a young graduated research and her team from the University of Cincinnati engineering, uncover factors that control ion motion in solid electrolytes.
ReplyDeleteThe articles says that researchers show for the first time that they can connect an increase in electrical (ionic) conductivity with flexibility of their networks. The same team of researchers discovered intermediate phases seven years ago in amorphous or disordered materials where networks are covalently bonded.
The article also states that the group's next step in their research will be to understand why traces of water change the behavior of these electrolytes so drastically and to understand if the behavior observed here of three elastic domains is a general feature of all electrolyte glasses or is it peculiar to this very well studied material.
Is good to have researches like these, right? :)
scientists have created this new material that fixes itself when exposed to ultraviolet light. Like for example a scratch on a car. It is made from the shells of shrimp and as this article says this material will soon be a part of our daily lifes. read the full article at :http://www.sciencenews.org/view/generic/id/41696/title/Light_could_heal_materials
ReplyDeleteGuys can you imagine that we could create natural gas from bacterias? well biological engineers have created kind of a waste digester that might provide the electricity that we need in the future. This digester uses two strains of bacteria to convert waste into bio-gas, it can turn three tons of food scraps into energy for 25 houses a day, and it could be useful for fuel procesing plants. It is planned to be used in several states in the last couple of years. This discovery can make a huge difference in the situation with the environment.
ReplyDeleteIf you want to read more about this discovery go to this link:
http://www.sciencedaily.com/videos/2006/1002-turning_trash_into_power.htm
The skeleton of a mammoth from the last ice age was found in Los Angeles! it is from aproximatelly 40,000 years ago. This mammoth is a Columbian mammoth; like a specie of elephant that become extinct near the end of the last ice age. Included with it there were found fosils of prehistoric American Lion skull, lion bones, bones from dire wolves, saber-toothed cats, juvenile horse and bison, teratorn, coyotes, lynx and ground sloths. Wow what a discovery, It is expected to double the size of the museum!
ReplyDeleteIn the website there are interesting pictures about the discovery, if you want to see them go here
http://www.newsdaily.com/stories/tre51h7r2-us-mammoth/
In my trip to Austria I visited the Museum of Natural History in Vienna. There I saw the famous Venus of Willendorf. The little figure is really interesting because it's a plump woman without a face.
ReplyDeleteVenus is a statuette made of fine limestone. It's only 11cm high! It was discovered in Willendorf (lower Austria) on August 7, 1908 during excavations carried out by the Prehistory Department of the Natural History Museum.
The little statue has it's tiny arms folded on top of her breasts, and it has no feet. The strong emphasis on the sexual features has led to an interpretation of the artifact as a symbol of fertility.
Guess how old is the Venus of Willenorf? It is 25,000 years old! Interesting right?
I thought that the silicone conversation we had last class with doctor Okafor was really interesting and I wanted to learn more about silicone. It turns out that silicone it's used very widely these days. You won't believe the many applications these compounds have besides being used as breast implants.
ReplyDeleteFirst I want to tell you guys why it's so used. That's because of it's properties:
-it can resist high temperatures, oxygen exposure, UV rays and ozone
-it repels water and electricity
-once it's dry is non-stick
-low chemical reactivity
-low toxicity, but it doesn't support microbiological growth
-high gas permeability
Amazing right?
As doctor Okafor said they are made out of silicon, oxygen, hydrogen, carbon and sometimes other chemical compounds.
As I mentioned before it is used very widely as:
-aquarium joints
-automotive field
-coatings (it's used to coat glass)
-cookware (molds and utensils)
-defoamers
-dry cleaning (it dissolves dry cleaning wastes which makes it environmentally friendly)
-lubricants
-medicine (not only as breasts implant, but also to make bandages, and dental dams)
-moldmaking
-personal care (hair conditioner, shampoo, hair gel, shaving products)
-plumbing and building construction
It's amazing right!!!
While searching for an interesting article to post up this week I happened to fnd one that caught my attention. The article "Astronomers catch a shooting star for 1st time" reviews the amazing discivery found in the desert of Sudan. Trying to track a small asteroid heading towards Earth before it had turned into a shooting star, the asteroid blew up in the sky befor e reaching land and scientists believed that they would find no trace of space rocks left to examine. Something that has never been tried before. As mentioned previously about 8.7 lbs of this material was found by dozens of students in Sudan's dessert. This is a complete new material that scientist will have the oppurtunity to examine. The chunks of the asteroid 2008TC3 have brought back memories of when these sort of rocks tried and then failed to become a planet "4.5 billion years ago".
ReplyDeleteTo read the article the link is posted below:
http://news.yahoo.com/s/ap/20090325/ap_on_sc/sci_asteroid_match;_ylt=At41o03s6xaCkjL53c3fR3cPLBIF
On the latest news on energy I have found an article concerning the contamination of toxins found near and in the waterways of the states of Chicago, Dallas, Philadelphia, Phoenix and Orlando, Fla. Fish from these states were found to contain some common medications "antihistamine diphenhydramine (Benadryl), an anticonvulsant and two types of antidepressants" as well. The article states that this has been the first time that this amount of diverse compunds have been found in diverse locations. To read more of the compounds found in the tissues and livers of these fishes, plus more info on the subject the link is posted below:
ReplyDeletehttp://news.yahoo.com/s/hsn/20090327/hl_hsn/fishinusriverstaintedwithcommonmedications;_ylt=AmR8r1Ge.K9MMVA4AEX_p.Rpl88F
The article I found this week was about the alkali metals and some new characteristics they share. We talked about alkali metals in class this week, so i thought this will be an interesting article to read. According to the article, esearchers have discovered a chemical curiosity, alkali metals that prefer aromatic surfaces to water and form clam-like structures.
ReplyDeleteBrendan Abrahams and his team from the University of Melbourne, Australia, were surprised to find that alkali metal cations prefer to surround themselves entirely with aromatic systems, despite being created in an aqueous solution.
Hydrogen bonding holds the two shells together to form the clam-like structure. The shells are anionic with the cations forming the 'flesh' inside. 'It seems to be a really nice match inside the clam-like structure between the cation and the electron-rich cavity provided by the aromatic surfaces. It was a surprise to us that a metal ion would do that,' says Abrahams.
They found that Rb+ and Cs+ were the right size to fit inside the clam. No clam formed when they used the smaller K+ cation, and with larger cations the clam shells opened up. With the larger cations the clam hinge was just a single, or pair, of hydrogen bonds. The fact that the clam still forms even when the hydrogen bonding is disrupted by the larger ions shows the importance of the electrostatic attraction between host and guest.
The researchers made the discovery while making molecular building blocks for coordination polymers and oligomers linked with metal ions. This work has produced some tetrahedral and other large molecules.
Although the researchers haven't come up with any direct applications for their discovery yet, Abrahams is optimistic about where future research will take them, saying 'who knows what this might lead to'. But for the time being, he says it is just a chemical curiosity.
Karen Harries-Rees
Oh My God you guys I just found out something truly interesting. I just started studying for the test we have on Monday, so I decided to read the chapter. Guess what I found out? Even though Argon (Ar)'s atomic number is 18 and Potassium (K)'s atomic number is 19, Ar has a greater mass than K. It was really choking for me, I had never noticed it before.
ReplyDeleteHowever it is not a mistake in the periodic table or anything like that, because the periodic table is arranged in increasing atomic number, not mass. Also, the elements are correctly placed in the table according to their properties. It was interesting anyways, right?
http://www.sciencedaily.com/releases/2009/03/090326215100.htm
ReplyDeleteThis article talks about the increscent of the risk of having throat cancer by drinking very hot tea. I found it really interesting because most of us drink tea every once in a while. It says that people are advised to wait a few minutes before drinking a cup of tea. This was studied a group of British scientists, and it was carried out in northern Iran, where large amounts of hot tea are drunk every day. They concluded that drinking very hot tea (70 C or more) can increase the risk of cancer of the esophagus which is the muscular tube that carries food from the throat to the stomach.
Claudia I noticed the same while reading the chapter and I agree with you that is an interesting characteristic of how well are elements arranged in the periodic table.Science is amazing, right?
ReplyDeleteWell now changing a little bit of the theme i would like to share with you guys some scary news about a new form of destructive terrorist material unlike. The chemist have been reporting their concerns that terrorists could produce a new and particularly dangerous form of the explosive responsible for airport security screening of passengers' shoes and restrictions on liquids in carry on baggage are unfounded.Detonation of 0.5 grams of triacetone triperoxide (TATP) -- a trivial sample size compared to quantities in modern-day terrorist materials -- emits a shock wave that destroys a nearby water balloon. At the 237th ACS National Meeting, chemists are reporting that a new, more powerful explosive related to TATP is unlikely.
At the end the good news are that the solution have been analyzed already and according to Harbison, a chemist at the University of Nebraska-Lincoln, said "Our analysis indicates that potentially new and destructive terrorist materials, which would tax our detection capabilities, may be too unstable for a practical synthesis,We consider it unlikely that any of the previous syntheses were actually successful, and the Internet myths about TeATeP are nothing more than that. So the good news is basically this is something we don't have to worry about."
At the end the amazing part of all these is to know what different substances together can create, even though some times can turn dangerous.
scientists now say that Quantum entanglement can be too much of a good thing
ReplyDelete"Physicists have long thought that quantum entanglement, a mysterious link between separated particles that Einstein called “spooky action at a distance,” would allow quantum computers to solve certain hard math problems much faster than ordinary computers. But now it seems that entanglement can also be a nuisance.
Instead of speeding up the process, too much entanglement can break down the entire system, researchers report in a paper to appear in Physical Review Letters"
to read the rest of this article click on the link below: http://www.sciencenews.org/view/generic/id/42056/title/Quantum_entanglement_can_be_too_much_of_a_good_thing
Scientist have discoered two moons in the Kuiper Belt made of an ice crystal surface. They could be two ice cubes floating in space. the curious thing is that the compostion of these moons are some what alike to our own moon, making scientist wonder if perhaps our moon could have ice in its core...
ReplyDeleteto read the full article click on the link below: http://www.sciencenews.org/view/generic/id/42280/title/Ice_cubes_in_space
Hello friends! I found a very interesting article concerning a new regulation to prevent ozone depletion. According to a new study rockets that have being launched decades ago have had a significant negative impact to the ozone. If we dont do anything about the ozone and its contaminants by the 2050 the effects will be crucial and might be too late. Actually the global rocket launches deplete ozone layer for no more that a few hundreds of one percent annually, but as the space industry grows and other chemicals decline in the earth atmosphere the issue the percentages are definitely going to increase. Rockets all over the world use liquid, solid and hybrid propellants,which release chlorofluorocarbons that are the responsible for the ozone depleting.
ReplyDeleteScientist and researchers trust that they are going to find a solution to the problem.
I believe that this is a really good idea since we are suffering from climate changes and so many other unusual things. It is time that we so something about it and we start caring about our earth no matter what is it that we have to sacrifice.
Oh if you want to check this article and many more interesting ones go to sciencedaily.com
ReplyDeleteI found interesting the blog Violeta posted about drinking hot tea and how it is connected to increased risk of having throat cancer. I’ve been drinking extremely hot tea every morning because they told me that the hotter the tea, the better it is for you to burn fat. I’m really glad I came across this post. Now I know that I have to wait a while for my tea to cool down before actually drinking it. The author suggests waiting at least four minutes before drinking a cup of freshly boiled tea, or more generally allowing foods and beverages to cool from "scalding" to "tolerable" before swallowing.
ReplyDeleteHello classmates, I have found an article about the discovery of perchlorate, a hazardous chemical in rocket fuel, found at potentially dangerous levels in powdered infant formula, according to a study (pdf) by a group of Centers for Disease Control scientists. According to the CDC, perchlorate exposure can damage the thyroid, which can hinder brain development among infants.
ReplyDeleteThe study points out that when perchlorate-contaminated powdered formula is mixed with water that also contains traces of the chemical, as many drinking water sources around the country do, the final concoction can become particularly harmful to babies.
I hope you learned from this news, and if you have any brother, sister or familiar just born be concern about what is happening.
http://www.rsc.org/chemistryworld/News/2009/April/06040901.asp
ReplyDeleteDid salt lake halogens help cause mass extinction?
I came across this very interesting article about what might have cause life on earth to be reduced to practically nothing. Now, a team of international scientists has put forward a new idea: that the planet's demise was due, at least in part, to millions of tons of halogenated gases being released by a giant salt lake the size of France. For example, the one that wiped out the dinosaurs is thought to have been caused by the impact of an asteroid on the Earth. But what wiped out 90 percent of life on Earth in the Permian Age some 250 million years ago still remains a mystery. The researchers, from Russia, Austria, South Africa and Germany, took samples from existing salt lakes in Russia and South Africa and measured a number of volatile halogenated hydrocarbons coming off the samples, produced by the action of bacteria and algae. The gases included chloroform, trichloroethene and tetrachloroethene. If proportionate quantities were being released by the Zechstein Sea, the scientists say, it could have had catastrophic consequences for the environment.
Daymaris Alvarez says...
ReplyDeleteBroccoli! Some of us love it, some of us hate it. Unfortunately if you suffer from asthma and hate broccoli, you have a significant problem. This is because scientist have found that eating broccoli produces an increase of antioxidant enzymes that offer protection against pollutants. That means that if you eat broccoli you have a better chance that your airways will be more clear of congestion. To prove this study, doctors gathered a group of 65 people and gave them oral doses of broccoli. Of course, these people where tested before and after, and the after results proved to be effective. So now you know, if you happen to have asthma, broccoli could be your answer.
http://www.sciencedaily.com/releases/2009/03/090302133218.htm
I remember having watched lots of dinosaur films where long necks ate from the tree branches high above the grounds of this ancient planet. Yet now scientists are arguing that these ways known by man are incorrect. Reading the "Long-necked dinos didn't reach for the skies" article I learned that the scientists from the prestigious "Royal Society" in Britain published a journal saying otherwise. Experiment from the capability of this species to have been able to eat while its neck was in a horizontal position for too long was impossible. Considering the amount of blood they had to pump for their neck's to stretch up as high, it was much more easier for them to eat stretching out their necks horizontally.
ReplyDeleteTo get more details on the article, head to the link below:
http://news.yahoo.com/s/afp/20090331/sc_afp/sciencedinosaursoffbeat;_ylt=Am4ttILpEDFfQmccvAA6Ds8PLBIF
Could it be possible that even cows are affecting the global warming of today?!? Believe it or not, it is possible. The millions of cows in India are now being part of the contribution to the greenhouse effect.
ReplyDelete"India's livestock of roughly 485 million (including sheep and goats) contribute more to global warming than the vehicles they obstruct."
While searching for natural herbs to cease this epidemic pollution, scientists in India have lots to work out, including the "yanking up production from the current 100 million metric tons to 180 million metric tons by 2021-22 to keep pace with growing population and expanding disposable incomes."
The article link is posted below:
http://news.yahoo.com/s/time/20090411/wl_time/08599189064600;_ylt=AiHQFTsl0z24LLWe6MUEr0Zpl88F
According to article, Japanese researchers found a way to tune the electronic characteristics of the A-T pairs, meaning charge transport is no longer sequence dependent. They improved the electrical conductivity of DNA through simple chemical modifications. Their work could pave the way for building DNA circuits and self-assembling, DNA-based electronics.
ReplyDelete"Before this work, DNA was considered not to be a very electrically conductive material. Its electron mobility is very, very low compared with usual conductive materials,' says Majima. 'Now we can say DNA is no longer so bad for charge mobility materials".
http://www.rsc.org/chemistryworld/News/2009/April/14040901.asp
"Together, ships worldwide burned about 217 million metric tons of fuel in 2004, about 5 percent of which was consumed while in port". Check this out! An atmospheric scientist at the University of Oslo in Norway,Stig Dalsoren, and his collegues got together to study the relation between pollution and cargo vessels. In 2004, the world’s merchant fleet included almost 91,000 ships and each weigh at least 100,000 tons. Much of that fuel that was burned was sulfur-rich diesel. The emissions included more than 16 million tons of sulfur dioxide. That gas, plus the various nitrogen oxides, or NOx, gases in the engine exhaust, reacts with moisture in the air to produce acid rain. Worldwide, ships account for about 11 percent of the acid rain due to NOx emissions and about 4.5 percent of the acid rain due to sulfur dioxide emissions.
ReplyDeleteSorry this is the link to my previous entry.
ReplyDeletehttp://www.sciencenews.org/view/generic/id/42287/title/
This article is about a new idea on what set the stage for the rise of oxygen in Earth's early atmosphere. As we all know a decrease in the amount of dissolved nickel in ocean waters beginning 2.7 billion years ago could have stifled methane-producing bacteria and set the scene for oxidation of the Earth’s atmosphere. This finding were very important because it provided a record of how much trace metals were in the oceans when the rocks formed, Konhauser says. The lower nickel content of the ocean waters reduced the activity of the methanogens, so the supply of methane gas diffusing from seawater into the atmosphere decreased over time.
ReplyDeletehttp://www.sciencenews.org/view/generic/id/42580/title/Nickel_down%2C_oxygen_up
Johana I found your article and is really interesting. I found out that that Triacetone Triperoxide has appearedas a weapon in the middle east, it has being used by suicide bombers in Israel and was chosen as a detonator in 2001. It is one of the most sensitive explosives known, it is sensitive to impact and to temperature which makes it extremely dangerous. Another type of peroxide that is also explosive is hexamethylene triperoxide, which is very sensitive but not as much as the Triacetone Triperoxide. Its explosion produces nitrogen gas but little heat. Guys don’t get exited with this but this explosive could easily be created in any basement laboratory using commercially available materials. All it takes is acetone, hydrogen peroxide, and a strong acid like hydrochloric acid or sulfuric acid. Please guys don’t try to do it you could blow up yourself!
ReplyDeleteHere you can see the diagram of an Triacetone Triperoxide molecule.
http://www.rsc.org/chemistryworld/News/2009/April/16040903.asp
ReplyDeleteIsolated microbes survive for millions of years
There has been a very interesting discovery made in the Antarctic. Researchers from the US and UK have discovered microbes from over one million years ago. One of the most interesting parts of the discovery is that the microbes have survived in isolation, no sunlight or new nutrients helped these microbes survive for that very long period of time. Jill Mikucki of Harvard University and others have done more research and taken samples of the fluids in the glaciers of the Antarctic, they found that the fluids have been trapped in these glaciers between 1.5 and 4 million years ago. The DNA showed that there were many different microbes found in the samples and also showed that there was very little oxygen found. This discovery can be proof that there could be possible life in other unexpected environments such as Mars or Jupiter.
Good evening guys, today I would like to share with you some information about Dynamite, since in the last test I wasn't completely sure about its components and use. So here it goes:
ReplyDeleteDynamite is an explosive based on the explosive potential of nitroglycerin, initially using diatomaceous earth or another absorbent substance such as sawdust as an adsorbent. Another form of dynamite consists of nitroglycerin dissolved in nitrocellulose and a small amount of ketone. This form of dynamite is similar to cordite. This form of dynamite is much safer than the simple mix of nitroglycerin and diatomaceous earth/kieselgur. This one is mostly used in the mining, quarrying, and construction industries and has had historical use in warfare, but its unstable nature, especially if subjected to freezing, has rendered it obsolete for modern military use. Dynamite has been replaced for combat purposes by military dynamite, a mixture of TNT, RDX, inert binders and anti-freeze agents. Military dynamite has approximately 60% of the strength of nitroglycerin-based, commercial dynamite. While not technically dynamite, it is called this as a slang term.
Well after this little review about Dynamite I hope those of you that like me didn't answer the question right, now know a little bit more.
Hi everyone! The article I found this week is about the transformation from carbon dioxide into methanol. This very interesting procedure was discovered by the scientists at Singapore's Institute of Bioengineering and Nanotechnology.
ReplyDeleteThe IBN researchers report that by using organocatalysts, they activated carbon dioxide in a mild and non-toxic process to produce methanol, a widely used industrial feedstock and clean-burning biofuel. Organocatalysts are catalysts that are comprised of non-metallic elements found in organic compounds.
Here is the link for those that want to read the whole article.
http://www.sciencedaily.com/releases/2009/04/090416102247.htm
Hello Guys!
ReplyDeleteI've read many of the interesting posts you have been putting and I though I might contribute to that. I found some interesting information about gas. Pay attention, this will be very useful when buying gas!
Since the mid-1980s engines use fuel injectors with computers to accurately control the air/fuel mix over all temperature and environment ranges. The accuracy of the fuel injectors and computers is based on using the recommended gasoline for that engine. Most cars are designed to burn regular unleaded gas with an octane rating of 87. If the vehicle needs a higher octane rating this requirement is noted in the owner's manual and usually under the fuel gauge and by the gas tank.
The quality of gasoline and the additive package usually affect the rate of engine wear more than the octane rating. Basically what this means is that it matters more where you buy your gas than which grade you purchase.
The recommended gasoline for most cars is regular 87 octane. One common misconception is that higher octane gasoline contains more cleaning additives than lower octane gas. All octane grades of all brands of gasoline contain engine cleaning detergent additives to protect against engine deposit build-up. In fact, using a gasoline with too high of an octane rating may cause damage to the emissions system.
The octane ratings 'regular', 'mid-grade', and 'premium' are not consistent. In the United States, for example, one state may require a minimum octane rating of 92 for premium gasoline, while another may allow an octane rating of 90 to be premium. Check the octane rating on the yellow sticker on the gas pump rather than relying on descriptive labels.
Certain high performance engines benefit from use of high octane fuel. For other engines, using a fuel with a higher octane rating than the vehicle requires sends unburned fuel into the emissions system and catalytic converter. This puts unecessary stress on the emissions system. For some vehicles, a rotten egg smell coming from the tailpipe signals use of too-high octane gas.
So, as you guys can see, there's absolutely nothing wrong when it comes to buying the cheapest gas. Great news, ah!
Daymaris Alvarez says...
ReplyDeleteGirls...ever gotten into a heated discussion with a guy over who is the weaker sex? Well, I know I have, and the answer to the question, is definitely them. Of course, in order to make such a call I would need the research to back it up, and tadaa now scientist actually have proof. The idea that the male is the weaker sex starts up from the minute he is conceived. In fact, boys are weaker than girls while they are in the uterus and later in life as well. Men are known to have and i quote, "a shorter lifespan, are more susceptible to infections, and have less chance of withstanding disease than women. In short, men are the weaker sex." Obviously boys, you guys aren't exactly the lamest, and the fact that you guys have weaker tendencies are what allows you to take risks that make it hard for anyone to notice.
http://www.sciencedaily.com/releases/2009/03/090331112729.htm
Hey Guys, I have a question for you:
ReplyDeleteCan a candle burn in zero gravity?
think.....................................
The answer is yes, however the flame would be a bit different. A flame in zero gravity(microgravity) forms a sphere surrounding the wick. Diffusion feeds the flame with oxygen and allows carbon dioxide to move away from the point of combustion, so the rate of burning is slowed. The flame of a candle burned in microgravity is an almost invisible blue color. The temperature of the flame is too low for the yellow color seen on Earth.
It isn't true that candles burn for a shorter length of time in space. Candles that burn for 10 minutes or less on Earth produced a flame for up to 45 minutes. That's what we need here, right? Instead of Glade's little candles that wear of in 5 minutes.
Scientists discover a nearly Earth-sized planet :
ReplyDeleteSpace is endless so it is only logical to think that somewhere out there there is a planet just like earth, a solar system just like this one. scientists have been proving this as a fact , recently a planet with very similar characteristics has been found with a star very similar to our sun. So it is very possible that in the next decade or so we may be one step closer to space travel.
read the full article in the link below: http://news.yahoo.com/s/ap/20090421/ap_on_sc/eu_britain_new_planet
The article I found this week is about two highly complex organic molecules detected in space. These are ethyl formate and n-propyl cyanide. The article is explains that atoms and molecules emit radiation at very specific frequencies, which appear as characteristic "lines" in the electromagnetic spectrum of an astronomical source.
ReplyDeleteThe researchers then used a computational model to understand the chemical processes that allow these and other molecules to form in space. Chemical reactions can take place as the result of collisions between gaseous particles; but there are also small grains of dust suspended in the interstellar gas, and these grains can be used as landing sites for atoms to meet and react, producing molecules.
Its a very interesting article, if you guys would like to read more here is the link
http://www.sciencedaily.com/releases/2009/04/090421080506.htm
Pay attention people:
ReplyDeleteCAN YOU DRINK TOO MUCH WATER?
Well, everyone says it is important to drink lots of water, but can it be too much?
Sometimes, yes. Drinking too much water can lead to a condition known as water intoxication and to a related problem resulting from the dilution of sodium in the body, hyponatremia. Water intoxication is most commonly seen in infants under six months of age and sometimes in athletes. A baby can get water intoxication as a result of drinking several bottles of water a day or from drinking infant formula that has been diluted too much. Athletes can also suffer from water intoxication. Athletes sweat heavily, losing both water and electrolytes. Water intoxication and hyponatremia result when a dehydrated person drinks too much water without the accompanying electrolytes.
However guys don't be alarmed! What's really important is not the amount of water you drink, but how fast you drink it.
The kidneys of a healthy adult can process fifteen liters of water a day! You are unlikely to suffer from water intoxication, even if you drink a lot of water, as long as you drink over time as opposed to intaking an enormous volume at one time. As a general guideline, most adults need about three quarts of fluid each day. Much of that water comes from food, so 8-12 eight ounce glasses a day is a common recommended intake. You may need more water if the weather is very warm or very dry, if you are exercising, or if you are taking certain medications. The bottom line is this: it's possible to drink too much water, but unless you are running a marathon, water intoxication is a very uncommon condition.
So drink water, it's very important!
Hello guy:
ReplyDeleteToday I was thinking about how interesting is chemistry. I've been working so hard to get a good sense of it and I think I've gotten it...Read this article and think about maybe you agree with me when I say that every day chemists discover something new which is very good because thanks to them we enjoy many of the things that make our lives possible and valuable. I was looking for news when I found this article can you imagine using the same materials that the Mayas tribes used to construct beautiful statues ? I think that would be cool..check this out
The ancient Maya civilisation used a rare type of clay called "palygorskite" to produce Maya blue. Combining structural, morphological and geochemical methods, Spanish researchers have defined the features of palygorskite clay on the Yucatan Peninsula in Mexico. These findings will make it possible to ascertain the origin of the materials used to produce this pigment, which survives both time and chemical and environmental elements.
I found this article very interesting. Its about the discovery of more than a hundred dusty galaxies in the early Universe. Each of these is in the throes of an intense burst of star formation. What is more interesting is that one of these galaxies is an example of a rare class of starburst! If you are interested, you can read the full article: http://www.sciencedaily.com/releases/2009/04/090422085832.htm
ReplyDeleteEver felt sad or depressed? Has your self-esteem felt low? Well researchers are now saying that TV can be a way out. In fact, they say that most people turn to television in order to feel loved or be happier. This is because the person feels some type of emotion for a certain fictional character on the TV program, and this helps them to elaborate their feelings of loneliness. This means that although people aren’t truly in the show, and they know that what they are watching isn’t real, they still feel like they found a place where they belong and are comfortable.
ReplyDeletehttp://www.sciencedaily.com/releases/2009/04/090422103730.htm
above was from Daymaris Alvarez
ReplyDeleteI was searching for my next chm blog science article when I happened to encounter an article based on the gene sequence that domestic cattle possess. This article caught my attention because this new discovery of the "first genetic blueprint" may help in many factors. One of the main factors relating to HEALTH.
ReplyDeleteIf you want to catch more details on the article, and the difference between cattle DNA and human gene structure (including how this new discovery can help scientists discover diverse ways of a healthier life; then follow the link posted below:
http://news.yahoo.com/s/nm/20090423/sc_nm/us_cattle_genes;_ylt=Am9IknL8cXbJycdhGhgZAp2JhMgF
It is absolutely amazing how the whole chaotic economic situation that is affecting our country at the moment has also affected our whole globe!
ReplyDeleteThe effects have reached one of the largest and poorest countries in the Eastern Hemisphere, "India". This has called India's "private sector firm" to drops it's anterior net profit of 39.1 billion rupees to 35.46 billion rupees. That means it has dropped an amount of around a 9.3 percent.
To read more of the article, and grasp more knowledge of how this scientific energy problem is occurring not only locally but globally visit the link below:
http://news.yahoo.com/s/afp/20090423/wl_sthasia_afp/indiacompanyrelianceearningslead;_ylt=AkZvA5k6h_ye7wApigm9uFMS.MwF
Good afternoon classmates, today i would like to share with you an interesting article i found related with the discovery of a glowing protein found in some exotic marine animals and used widely as a marker in molecular biology has another remarkable property - it can convert light into chemical energy, a phenomenon usually associated with photosynthesis in plants or energy production in bacteria. Experts believe that such a protein is unprecedented in animals.
ReplyDeleteThe green fluorescent protein (GFP) was originally discovered in a species of jellyfish. The molecule emits green light when it is irradiated with blue light and has become ubiquitous in biological research as a 'marker' of gene expression - its gene can be fused with other genes of interest so that when the latter are switched on, GFP is manufactured by the cell and can easily be detected. But no-one knows the actual function of this family of proteins in nature.
It is an amazing article, so if you would like to know more about it just go to this page:
http://www.rsc.org/chemistryworld/News/2009/April/26040901.asp
Roxi I loved the article about the Mayas architectures, but I would like to know more about it, can you send me the web-site so I can read it completely
ReplyDeleteHello everybody!!!
ReplyDeleteToday I was breaking my head studying chemistry and I decided to look for something visual that would help me understand some of the questions that I had. I think I found something very interesting you can read it and maybe it would help you as much as it did to me. Here we go...
ScienceDaily (Apr. 26, 2009) — As researchers push towards detection of single molecules, single electron spins and the smallest amounts of mass and movement, Yale researchers have demonstrated silicon-based nanocantilevers, smaller than the wavelength of light, that operate on photonic principles eliminating the need for electric transducers and expensive laser setups.The work reported in an April 26 advance online publication of Nature Nanotechnology ushers in a new generation of tools for ultra-sensitive measurements at the atomic level.
In nanoelectromechanical systems (NEMS), cantilevers are the most fundamental mechanical sensors. These tiny structures — fixed at one end and free at the other — act like nano-scale diving boards that "bend" when molecules "jump" on them and register a change that can be measured and calibrated. This paper demonstrates how NEMS can be improved by using integrated photonics to sense the cantilever motion.
"The system we developed is the most sensitive available that works at room temperature. Previously this level of sensitivity could only be achieved at extreme low temperatures" said senior author Hong Tang, assistant professor of electrical and mechanical engineering in the Yale School of Engineering and Applied Sciences.
Their system can detect as little deflection in the nano-cantilever sensors as 0.0001 Angstroms — one ten thousandth of the size of an atom
Guys I really recommend you to read this article. I am that kind of person who loves animal and everything about it as well. This articles talks about the use of glycerin as part of a diet for chicken farmers. See the results you will be amazed. I am thinking to start eating glycerin maybe it help me not to gain more weight :)...hope you like it
ReplyDeleteAgricultural Research Service (ARS) scientists have found environmentally and economically sound uses for the byproducts of biofuel production.
Animal scientist William Dozier, formerly with the ARS Poultry Research Unit in Mississippi State, Miss., has been working with colleagues at the ARS Swine Odor and Manure Management Research Unit in Ames, Iowa, and Iowa State University (ISU) to find ways to supplement animal diets with glycerin. Glycerin, a biofuel byproduct, contains energy-providing nutrients for animals.
Dozier and ISU colleague Kristjan Bregendahl evaluated the use of glycerin supplements in poultry feed. Dozier primarily dealt with broilers, which are chickens raised specifically for meat production, and gave glycerin-supplemented poultry feed to broilers that were 7 to 45 days old.
Dozier evaluated the apparent metabolizable energy (AME) intake—a standard measure of energy—for the study group and for a control group that ate a standard diet. The youngest chicks, aged 7 to 10 days, showed a higher AME intake than the control group. However, the two groups showed no significant differences in the amount of feed they consumed, body weight, or the amount of energy lost in feces and urine (energy excretion).
The second group of broilers, aged 21 to 24 days old, that consumed glycerin feed supplements showed no difference in body weight, energy excretion, and AME. However, their feed intake and the amount of energy provided by the diet intake (gross energy) increased when glycerin supplementation increased. The oldest broilers, aged 42 to 45 days old, showed increases in feed consumption, gross energy, and AME.
Dozier notes that from a nutritional standpoint, this technology can serve as an alternative dietary energy source that could result in lower feed costs. Swine and poultry producers are very interested in supplementing livestock feed with glycerin, in part because the corn grain and soybeans that used to be fed to livestock are now being used for biofuel production. This way, the crops can be used for both biofuels and for livestock feed.
Hellow everyone I would like to share this article with you. It is about the new discovey of two highly complex molecules detected in space. These molecules are ethyl formate and n-propyl cyanide. They were discovered on a hot, dense cloud of gas known as the "Large Molecule Heimat" which contains a luminous newly-formed star.In the past large molecules of diferent sources have being detected oncluding alcohols, aldehydes and acids but these two are the most complex of their kind yet detected in interstellar space. This is very interesting giys if you want to know more about this new and many more you can go to sciencedaily.com
ReplyDeleteGood evening everybody:
ReplyDeleteGuys I want you to read this article is so interesting. Imagine a strange organism living for million of years in the glaciers? Well I do not know about you guys but that really scares me.You should keep reading so can find out what is it... Wish you all the best for tomorrow ..Good luck
ScienceDaily (Apr. 17, 2009) — A reservoir of briny liquid buried deep beneath an Antarctic glacier supports hardy microbes that have lived in isolation for millions of years, researchers report April 17 in the journal Science.
The discovery of life in a place where cold, darkness, and lack of oxygen would previously have led scientists to believe nothing could survive comes from a team led by researchers at Harvard University and Dartmouth College. Their work was funded by the National Science Foundation, NASA, and Harvard's Microbial Sciences Initiative.
Despite their profound isolation, the microbes are remarkably similar to species found in modern marine environments, suggesting that the organisms now under the glacier are the remnants of a larger population that once occupied an open fjord or sea.
"It's a bit like finding a forest that nobody has seen for 1.5 million years," says Ann Pearson, Thomas D. Cabot Associate Professor of Earth and Planetary Sciences in Harvard's Faculty of Arts and Sciences. "Intriguingly, the species living there are similar to contemporary organisms, and yet quite different -- a result, no doubt, of having lived in such an inhospitable environment for so long."
"This briny pond is a unique sort of time capsule from a period in Earth's history," says lead author Jill Mikucki, now a research associate in the Department of Earth Sciences at Dartmouth and visiting fellow at Dartmouth's Dickey Center for International Understanding and its Institute of Arctic Studies. "I don't know of any other environment quite like this on Earth."
Chemical analysis of effluent from the inaccessible subglacial pool suggests that its inhabitants have eked out a living by breathing iron leached from bedrock with the help of a sulfur catalyst. Lacking any light to support photosynthesis, the microbes have presumably survived by feeding on the organic matter trapped with them when the massive Taylor Glacier sealed off their habitat an estimated 1.5 to 2 million years ago.
Johana I read your article and is very interesting how a protein can glow I've never imagined that.
ReplyDeleteDaynaris your article might soud a little crazy but I believe that is the reality in which we live. When Im alone at home I use to turn on the television not to feel nove necesarily but to not feel alone and this is exactly what your research is about. Very interesting girla.
ReplyDeleteMae your comment sounds very interesting. I would like to know more about that but to be honest I do not know that much about stars and all that kind of stuffs but i really liked them. I am going to read the whole article so I can learn more about it because it is very useful and unusual ...
ReplyDeleteDaymaris I just read your comment. Wow it is completely true I even do that. Sometimes I feel lonely and it really scares me so what i do is turn on the TV so at least I can hear some noise because silence is very deep and it also scares me :(. I did like it ...Keep up the good work guys!!!
ReplyDelete