Tag: "oxide" at biology news
New study could lead to better treatment of septic shock
...ossible culprit: a dangerous interaction of nitric oxide
a natural compound involved in regulating blood c...y suggests that a mixture of high levels of nitric oxide
and free radicals must be present for PAF to wreak such damage on the circulatory system. Researcher...
Berkeley chemical engineer wins national award for catalysis research
...oach to design catalysts that can eliminate nitric oxide
from the emissions of power plants and automobiles. New lean-burning vehicles, for example, pollute less per mile; the challenge, however, is that increased air in the mixture redirects the reaction toward consuming oxygen, not nitric oxide. A finely...
Action at a distance in the hyperoxic eye
...iments with mice deficient in the inducible nitric oxide
synthase (iNOS) gene, Sennlaub and colleagues suggest a novel mechanism to explain this pattern of growth. In wild-type animals, iNOS is induced shortly after normal oxygen levels are restored, and it appears to block the formation of vessels in the ...
Study pinpoints an enzyme key to both male and female sexual dysfunction -- along with a potential treatment
...ual. At one critical step in that pathway, nitric oxide
synthase converts arginine, one of the 20 human am...for arousal, depriving the genitalia of the nitric oxide
needed for sexual function. "Both Viagra and BEC function by blocking enzymes that can degrade key...
Atmospheric chemistry key to global and local air pollution
...pper troposphere, can become the dominant hydrogen oxide
source and result in efficient ozone production," ... and combined with the industrial pollutant nitric oxide
produces ozone. The sun then breaks down this ozone, creating hydroxl radicals and starting the cycl...
Researchers develop liquid form of DNA
...charged molten metal complexes containing ethylene oxide
tails. Murray, his colleagues and students have employed that molecular trick successfully over the past decade with a variety of other substances. "There's been a lot of discussion about using DNA to make circuits because it has a built-in ability ...
LabNotes -- Research highlights from Pacific Northwest National Laboratory
...e polycubes were fabricated by combining plutonium oxide
and polystyrene in the 1960s and were used for testing criticality geometries in the handling and processing of spent fuel. Over the years, the polycubes began deteriorating, which caused storage challenges and potential environmental risks....
Acid-rain component may be more potent pollutant than previously thought, UB chemists discover
...also found that the reactive site between a nitric oxide
cation (a positively charged atom) and an alcohol ...o discover that reactions occurring between nitric oxide
and methanol within gas-phase clusters probably are creating harmful pollutants in the upper atmosph...
Suspect list shortens for maternal aggression's brain origins
...ears ago between the brain neurotransmitter nitric oxide
and aggression in male mice. In an attempt to greatly reduce or eliminate nitric oxide
in the mice's brains, scientists had given them a defective copy of a gene involved in nitric oxide
INEEL creates a method to link energy use, greenhouse gases
...se gas" refers to carbon dioxide, methane, nitrous oxide
and other gases that are thought to trap solar energy and cause changes to the world's environment. The gases are created through common industrial processes and also by using fossil fuel-based energy. Some energy production methods, such as hydroe...
Catalytic converters fix one pollution problem, cause another
...lytic converters that work too well. When nitrogen oxide
from the engine's exhaust is "over-reduced," a complex chemical reaction ensues. Ammonia gas (NH3) forms in the catalytic converter, which is then emitted from the vehicle's tailpipe. Researchers used air particle sampling to measure the levels of ...
Scientists discover key ingredient in sexual reproduction
...nswer, he says, begins with the build-up of nitric oxide
gas inside the sperm. Epel and his colleagues d... sea urchin sperm contains an enzyme called nitric oxide
synthase, which remains inactive until a few seconds before fertilization. 'As the sperm approache...
Fuel cell research center to develop and test new technologies
... cells; (2) modeling of molten carbonate and solid oxide
fuel cells; (3) extending fuel cell technology for use with electrochemical membrane devices that clean fuel, gases and other substances; (4) enabling technologies for compact, small-scale or micro proton exchange membrane fuel cells; (5) development...
Summer 2000 techNotes
...ers - Clean, affordable and highly efficient solid oxide
fuel cells on the market in 10 years - that is the goal of a new industry-government-university consortium led by two Department of Energy labs - Pacific Northwest National Laboratory and the National Energy Technology Laboratory. Called the Solid-St...
New test for presence of nitric oxide could improve medical knowledge
...tion (NSF) have developed a means to detect nitric oxide
that could help improve scientists' understanding ...setts Institute of Technology synthesized a nitric oxide
sensing system that consists of a molecule whose fluorescence switches on when nitric oxide
Building better engines through natural selection
...created a diesel engine design that reduces nitric oxide
emissions by three-fold and soot emissions by 50 p...ironmental Protection Agency mandate to cut nitric oxide
emissions in half by 2002. Wisconsin's small engine industry, also facing pollution-control deadline...
DFG to launch 21 new priority programmes
...hesis method and manufacturing specified metallic, oxide
or nitride coatings with defined material properties. In the semiconductor industry, nearly all conventional electronic components, such as those used in silicon electronics, consist of inorganic materials. The priority programme Organic Field Effect...
Fact sheet: the Report on Carcinogens - 9th edition
...o cadmium and cadmium compounds. Ethylene oxide
- Ethylene oxide
was upgraded from "reasonably anticipated" to a "known human carcinogen" in the 9th Report. This ch...
Acid rain revisited: ESA releases report on the ecological response to acid deposition
...ts are being met as a result of sulfur and nitrous oxide
Researchers seek clues to help newborns with abnormal lungs
...chers have found low blood-plasma levels of nitric oxide
(NO) in mouse newborns, which are born with hypopl...irst study to show such a relationship. "Nitric oxide
is a molecule that is important for dilating or opening up the pulmonary blood vessels to allow prop...
1 2 3 4 5 6 7 8