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Latest Nonmetals Stories

2011-06-14 01:32:38

In the search for superconductors, finding ways to compress hydrogen into a metal has been a point of focus ever since scientists predicted many years ago that electricity would flow, uninhibited, through such a material. Liquid metallic hydrogen is thought to exist in the high-gravity interiors of Jupiter and Saturn. But so far, on Earth, researchers have been unable to use static compression techniques to squeeze hydrogen under high enough pressures to convert it into a metal. Shock-wave...

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2011-06-09 05:25:00

Where does water end and air begin? Scientists found that some water molecules exist as both a gas and a liquid by splitting the difference between the two, according to a new study in Nature. In the uppermost layer of water, the boundary between gas and liquid occurs in one quarter of water molecules, where one hydrogen atom is in the water and the other vibrates freely above it. These molecules straddle between gas and liquid phases, says senior author Alexander Benderskii of the University...

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2011-05-16 10:44:19

An international team, of scientists, led by a team at Monash University has found the key to the hydrogen economy could come from a very simple mineral, commonly seen as a black stain on rocks. Their findings, developed with the assistance of researchers at UC Davis in the USA and using the facilities at the Australian Synchrotron, was published in the journal Nature Chemistry yesterday 15 May 2011. Professor Leone Spiccia from the School of Chemistry at Monash University said the ultimate...

2011-05-11 12:49:26

Although some people believe that taking selenium can reduce a person's risk of cancer, a Cochrane Systematic Review of randomised controlled clinical trials found no protective effect against non-melanoma skin cancer or prostate cancer. In addition, there is some indication that taking selenium over a long period of time could have toxic effects. These conclusions were reached after researchers scanned the medical literature, looking for trials that studied the effects of taking selenium...

2011-05-11 00:27:49

This discovery will make it possible to improve photoelectrochemical cells. In the same way that plants use photosynthesis to transform sunlight into energy, these cells use sunlight to drive chemical reactions that ultimately produce hydrogen from water. The process involves using a light-sensitive semi-conducting material such as cuprous oxide to provide the current needed to fuel the reaction. Although it is not expensive, the oxide is unstable if exposed to light in water. Research by...

2011-03-23 15:10:00

GREENBELT, Md., March 23, 2011 /PRNewswire-USNewswire/ -- The origin of life may have been smelly, according to a recent, NASA-funded analysis of residue from a variant of classic experiments performed by Dr. Stanley Miller in the 1950s. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) "One of the primary differences between this experiment and others Miller performed is the use of hydrogen sulfide (H2S) gas to help simulate the primordial atmosphere," said Eric Parker of the...

2011-03-16 18:19:09

Scientists are reporting that the controversy surrounding whether selenium can fight cancer in humans might come down to which form of the essential micronutrient people take. It turns out that not all "seleniums" are the same "” the researchers found that one type of selenium supplement may produce a possible cancer-preventing substance more efficiently than another form of selenium in human cancer cells. Their study appears in the ACS' journal Biochemistry. Hugh Harris and colleagues...

2011-03-11 14:38:22

ASSR could reduce amount of heat needed in purification process Natural gas extracted from the nation's coal beds and methane-rich geologic features must first be purged of hydrogen sulfide before it can be used as fuel. Until now, processing methods have often proved to be inefficient, requiring large amounts of heat. But a team of Battelle researchers at the Department of Energy's Pacific Northwest National Laboratory has discovered a method that could dramatically cut the amount of heat...

2011-02-20 21:46:00

Inexpensive hydrogen for automotive or jet fuel may be possible by mimicking photosynthesis, according to a Penn State materials chemist, but a number of problems need to be solved first. "We are focused on the hardest way to make fuel," said Thomas Mallouk, Evan Pugh Professor of Materials Chemistry and Physics. "We are creating an artificial system that mimics photosynthesis, but it will be practical only when it is as cheap as gasoline or jet fuel." Splitting water into hydrogen and oxygen...

2011-02-10 01:19:21

Nano-scale lattice developed at Boston College a promising platform for clean energy applicationsCoating a lattice of tiny wires called Nanonets with iron oxide "“ known more commonly as rust "“ creates an economical and efficient platform for the process of water splitting, an emerging clean fuel science that harvests hydrogen from water, Boston College researchers report in the online edition of the Journal of the American Chemical Society. Assistant Professor of Chemistry...


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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