Tag: "hydrogen" at biology news

Chemical society convenes regional meeting in Santa Barbara, October 28-31

...ts. Environmental issues may include: methane and hydrogen sulfide gas migration and potential accumulation in planned structures; discovery of improperly abandoned oil wells; excavation of crude oil-impacted or oil field waste-impacted soils; and oil field construction debris that may have been buried durin...

Researchers uncover a piece of nature's secret nitrogen formula

...complex process of heating dangerously combustible hydrogen under very high pressures. Meanwhile, in the groun...nitrogen from the air and "fix" it, turning it and hydrogen into ammonia that plants use to make DNA and proteins. Animals get nitrogen for their DNA by eating ...

UB biophysicists discover high-speed motility in cells in response to voltage changes

...an detect movements smaller than the diameter of a hydrogen atom. The measurement technique involves an atomic force microscope that uses a laser to measure the position of a pointed silicon probe, much as a phonograph needle tracks the grooves in a record. These experiments also allowed the researchers, for ...

Smallest silicon particles light way for new sensors, materials

...kenes or alkynes, chemicals compounds that contain hydrogen and carbon. "In this highly reactive state, the nanocrystalline silicon reacts with the compounds to create a carbon-silicon bond that produces a stabilizing coat," Buriak says. "This is a very clean, very practical reaction that allows us to stabili...

Scientists at The Scripps Research Institute discover a previously unknown role for antibodies

...ates that antibodies can catalyze the formation of hydrogen peroxide from singlet oxygen. All antibodies have ...n," says Janda. The ability to convert oxygen into hydrogen peroxide may also be part of a previously unrecognized killing mechanism that would enhance the defe...

Penn engineers develop fuel cell that uses liquid diesel, the first such device to run on a widely available fuel

...stepped the thorny problem of "reforming" fuels to hydrogen to run fuel cells. "In our earlier work, we were u...bons, without requiring complicated reforming into hydrogen either within the device itself or at specialized filling stations. Generating electric power throu...

American Chemical Society meeting features cutting-edge research August 26-30 in Chicago

... be addressed include fossil fuels, nuclear power, hydrogen and recent advances in fuel cells. ( CHED 31-38; FUEL 18-21; Sunday, August 26, 1 p.m.) Polymer may improve oral insulin delivery for diabetics A new polymer with a gel-like consistency could offer diabetics an oral alternative to daily inje...

Cancer-detecting microchip - a micromachined cantilever - is sensitive assay for prostate cancer and potentially other diseases, researchers report

...y about 10-20 nanometers - the diameter of 100-200 hydrogen atoms. Lasers can detect a deflection as small as a fraction of a nanometer, however. That is the equivalent of a cantilever the length of a football field bending the mere width of a quarter, Thundat said. "The primary advantage of the microcantilev...

Genes that dictate metabolic processes in an ancient life form being identified by Virginia Tech biochemist

...rs of ocean depth (8,000 feet). It reduces CO2 to hydrogen -- its source of energy for its life processes -- and exhales methane. White is determining which of the 1,800 genes are responsible for the individual steps in the biosynthesis of the coenzymes carrying out this process. He is in the process of iden...

Researchers discover new route to high blood pressure

...he kidneys and impaired secretion of potassium and hydrogen ions. Although the disorder seemed to point to a p...e reabsorption or secretion of salt, potassium and hydrogen ions. While the WNK1 enzyme appeared in the cytoplasm within kidney cells, WNK4 appeared in "tight j...

Cellular organelle evolved repeatedly

...rming organelles, are cell organelles that produce hydrogen and energy. They serve as an alternative energy supply in organisms that live without oxygen, such as anaerobic fungi and protozoa. The microbiologists believe that hydrogenosomes evolved from mitochondria as a result of a drastic ecological change....

Louisiana researcher and Washington, Pennsylvania, North Carolina companies win Presidential awards for environmentally-conscious business innovation

...ommercially available products which typically use hydrogen cyanide in their production process. Professor Chao-Jun Li (Tulane University, New Orleans, La.) developed simpler, cheaper and more environmentally benign processes for organic chemistry. Reactions can be done in water or in open air containers with...

Scientists share multidisciplinary discoveries at 'Earth System Processes'

...gen and methane are reversed from today; in effect hydrogen escape to space was inescapable and oxygenation of the atmosphere was irreversible. Christian J. Bjerrum, Danish Center for Earth System Science at the University of Copenhagen, will postulate that due to the limited availability of phosphorous, a p...

Krauss book explores universe from oxygen atom's perspective

... minutes become the building blocks for helium and hydrogen -- the first elements. It takes several billion years before the oxygen atom ultimately forms, and during this time its ingredients experience cosmic odysseys as they travel through space in a still young, unsettled, and dynamic universe. Caught up...

Scientists determine how chemistry keeps weird worms "out of hot water" at steaming deep-sea vents

...ompounds simultaneously, such as iron monosulfide, hydrogen sulfide, thiosulfate, polysulfide and others," say...n waters up to 30C (86F), and its bacteria require hydrogen sulfide for survival. If the chemical is not present, the tubeworms die. Unlike the tubeworm, the Po...

Hitchhiking molecules could have survived fiery comet collisions with Earth, UC Berkeley experiment shows

...range from the simplest - water, ammonia, methane, hydrogen cyanide and alcohols, including ethyl alcohol - to more complex molecules, including chains of up to eight carbon atoms. Interestingly, of the more than 70 amino acids found in meteorites, only eight of them overlap with the group of 20 which occur c...

UCSD researchers create a home for liver cells on a silicon chip

...ith pores 2 to 1,500 nanometers in diameter. Using hydrogen fluoride and a platinum electrode, researchers in Sailor's laboratory are able to produce tiny cylindrical holes in the chip by electrochemically dissolving parts of the silicon away. "The materials are made by an electrochemical etching proc...

Pasadena chemist wins national award for environmental research

... insights into the interactions of sulfur dioxide, hydrogen peroxide and cloud water helped reveal how acid rain develops. A current focus of his research team is developing ecologically benign technologies to control pollution. For example, sonochemistry can destroy chemical contaminants with sound, he sai...

Designer solvents promise revolutionary pollution solution

...many contaminants, particularly carbon dioxide and hydrogen sulfide. They "sour" the gas, lowering its fuel va...chemical groups that react with carbon dioxide and hydrogen sulfide, literally binding them into the solvent. Preliminary results indicate that heating contamin...

Allentown chemist wins national award for catalysis research

...duction of such industrial building blocks such as hydrogen and nylon. "For a number of years, we at Air Products worked on a project to remove oxides of nitrogen, or NOx - that's the brown haze you can see in smog," he said. "Our process used not ammonia, which itself is a pollutant, but parts-per-million ...

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