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Latest Nonmetals Stories

a1faa217c7c93e15e062c39c088bac4a1
2008-03-25 11:20:00

Heart rate and metabolism drop, while blood pressure and oxygen levels maintainedLow doses of the toxic gas responsible for the unpleasant odor of rotten eggs can safely and reversibly depress both metabolism and aspects of cardiovascular function in mice, producing a suspended-animation-like state. In the April 2008 issue of the journal Anesthesiology, Massachusetts General Hospital (MGH) researchers report that effects seen in earlier studies of hydrogen sulfide do not depend on a reduction...

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2008-02-26 00:35:00

Researchers at University of Utah reported Monday that a single strand of  hair can reveal a history of which areas within the United States a person has been living or spending time.The scientists compared variations in isotopes of hydrogen and oxygen found in strands of hair to those of tap water in various areas of the country. They found the isotopes corresponded, and were able to use this information to determine a person's location during recent weeks to years.Isotopes are forms of...

2008-02-25 16:11:08

CSIs now have a new tool in their belt: the chemical signatures left by local drinking water in human hair. Scientists at the University of Utah have found that the ratios of different forms of hydrogen and oxygen in local drinking water vary from region to region across the country. These elements are incorporated into the hair as it grows. Traces in the hair can show where a person has recently lived or traveled, and could help police track the recent movements of criminals. "You are...

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2008-02-17 18:10:00

Plants trees and algae do it. Even some bacteria and moss do it, but scientists have had a difficult time developing methods to turn sunlight into useful fuel. Now, Penn State researchers have a proof-of-concept device that can split water and produce recoverable hydrogen. "This is a proof-of-concept system that is very inefficient. But ultimately, catalytic systems with 10 to 15 percent solar conversion efficiency might be achievable," says Thomas E. Mallouk, the DuPont Professor of...

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2008-01-29 17:05:00

Thomas Wood, a professor in Texas A&M University's Artie McFerrin Department of Chemical Engineering, has 'tweaked' a strain of E. coli so that it produces substantial amounts of hydrogen For most people, the name "E. coli" is synonymous with food poisoning and product recalls, but a professor in Texas A&M University's chemical engineering department envisions the bacteria as a future source of energy, helping to power our cars, homes and more. By genetically modifying the bacteria,...

2007-12-11 06:00:10

By Garcia-Zubiri, Inigo X Burrows, Hugh D; de Melo, J Sergio Seixas; Pina, Joao; Monteserin, Maria; Tapia, Maria J ABSTRACT The complexation of beta-carboline-3-carboxylic acid N- methylamide (betaCMAM) with the sodium salts of the nucleotides polyadenylic (Poly A), polycytidylic (Poly C), polyguanylic (Poly G), polythymidylic (Poly T) and polyuridylic (Poly U) acids, and with double stranded (dsDNA) and single stranded deoxyribonucleic acids (ssDNA) was studied at pH 4, 6 and 9....

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2007-08-24 00:50:00

A new interpretation of data from NASA's Viking landers indicates that 0.1% of the Martian soil tested could have a biological origin. Dr Joop Houtkooper of the University of Giessen, Germany, believes that the subfreezing, arid Martian surface could be home to organisms whose cells are filled with a mixture of hydrogen peroxide and water.  In a presentation at the European Planetary Science Congress in Potsdam on Friday 24th August, Dr Houtkooper will describe how he has used data from...

2007-08-20 09:10:17

By Costello, Michael T Urrego, Roberto A; Hunter, Maureen Keywords Overbased Sulfonate. Sulfurized Olefin. Molybdenum Dithiocarbamate, XPS, Four-Ball ER Surface Chemistry, Metalworking Lubricants Abstract The role of amorphous or crystalline overbased detergent and sulfur containing AW/EP additives on the surface films created in a tribometer was investigated. In the crystalline overbased sulfonate containing samples the weld point was higher than for the equivalent blend using an...

6a877009ffc714c710946b83dbbf72fb1
2006-03-27 14:00:00

A new Pacific Northwest National Laboratory study offers the most detailed picture to date on how oxygen can be made in frigid reaches far from Earth ATLANTA-- Some may be surprised to learn that bleach-blondes and the enabler of life elsewhere in our solar system have something in common. And, no, it's not intelligence. It is, in fact, hydrogen peroxide. But how that hydrogen peroxide emerges from ice to become life-sustaining oxygen has been unclear. Now, a new study at the Department of...

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2005-10-07 07:35:00

NASA -- NASA exobiology researchers confirmed Earth's oceans were once rich in sulfides that would prevent advanced life forms, such as fish and mammals, from thriving. The research was funded in part by NASA's exobiology program. A team of scientists from the Massachusetts Institute of Technology and Harvard University, working with colleagues from Australia and the United Kingdom, analyzed the fossilized remains of photosynthetic pigments preserved in 1.6 billion-year-old rocks from the...


Latest Nonmetals Reference Libraries

Acid Rain
2013-04-01 10:21:17

Acid rain is any form of precipitation that is unusually acidic, meaning that is possesses high levels of hydrogen ions. It can have harmful effects on aquatic animals, plants, and infrastructure. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules within the atmosphere to produce acids. Nitrogen oxides can be produced naturally by lightening strikes. Sulfur dioxide can be produced naturally by volcanic eruptions. The chemicals that are...

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Word of the Day
jument
  • A beast of burden; also, a beast in general.
'Jument' ultimately comes from the Latin 'jugum,' yoke.
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