Tag: "metal" at biology news
Humboldt awarded for study of acid-mine drainage in Germany
...orm during the weathering of pyrite and associated metal
sulfides. These acidic effluent flows, from mine e...h air and oxygenated surface water and precipitate metal
oxides, oxyhydroxides, and/or hydroxysulfates." These phases form mineral/rock coatings and sedimen...
Researchers at Vanderbilt's Free-Electron Laser Center are developing new forms of laser surgery, improved X-ray technology, and better methods for protein identification
...lowing electrons, generating electrical signals in metal
antennae. Microwaves cause the water molecules to vibrate inside solid food, producing the heat that cooks it. Ultraviolet radiation from the sun breaks down DNA. Different materials absorb and radiate light at different wavelengths. The patterns of ...
Biologists find a gene required for tolerance of heavy metals, previously known only in plants, in an animal
...es of research into the biochemical basis of heavy metal
detoxification in animals, never before had the in...ion of a previously unsuspected mechanism of heavy metal
detoxification in some animal species." Scientists pursued the plant gene for PC synthase for a numb...
Report: Proteins can be engineered as widely adaptable 'bioelectronic' sensors
...cterial maltose binding protein, tethering to it a metal
ruthenium group that would produce a voltage when its conformation was altered. Thus, when they coated a gold electrode with the proteins and added maltose, that sugar altered the proteins' conformation, producing an electric current proportionate to...
Biocomposites put the plant into the auto plant - and more
...ble sheet processing - sort of a fiber-based sheet metal
that can be used to fabricate future generations of composites for automotive, building and consumer goods applications. Environmentally friendly "green" biodegradable composites from natural fiber and cellulosic plastic - Poster, 6 p.m. Tuesday, Aug...
Molecular structure could advance understanding of human disorders
...e gained new insight in remarkable detail into a metal
transfer mechanism. Given the large number of huma...he proper functioning of cells. They deliver heavy metal
ions, such as copper and iron, to enzymes that need them to catalyze vital biochemical reactions, su...
Researchers building a trap for chromium six
... years, the EPA has been particular about how much metal
can be in the water and analytical chemists have learned how to determine concentrations at very low levels. There are problems in looking at the form of a metal, however. In the case of chromium three and chromium six, the number relates to the numb...
Queens University chemist wins U.S. award for new reactions to make drugs, agrochemicals, conductors
...etallic compounds, whose combination of carbon and metal
atoms makes them reactive in unique ways. For example, researchers at the drug company Pharmacia Corp. use a Snieckus method to prepare celecoxib (Celebrex), an arthritis painkiller less likely than others to cause serious stomach problems. The chemi...
Mercury at bottom of central park lake linked to coal burning in NYC
...an important rule in exposing humans to this toxic metal
known to damage the kidneys, nervous system, and brain. The potential for increased mercury in the environment depends, to a large extent, on emission controls. The level of emission control that is appropriate for coal-burning power plants is a sign...
Genetic secrets of metal-eating plants uncovered
...ght to allow plants to accumulate large amounts of metal
in their tissues have been identified and cloned b...tools that we've got to manipulate this process of metal
hyperaccumulation," he says. "So what we're going to do now is to start expressing these genes in no...
'Gold Bug' sheds light on how some gold deposits formed
...ts may lead to anunderstanding of how the precious metal
came to be available in disparateforms, and how so...e surface of the Earth. This would explain how the metal
came to be in two different forms in very different environments. If that is the case, the team wond...
Engineers develop technology to reduce industry emissions
...n conventional precipitators a hammer strikes the metal
to loosen the ash actually sends the pollutant back into the air, the membranes in the revamped device can be washed with water. "The membranes are better suited for meeting the newest EPA environmental regulations, which are aimed at small partic...
Rutgers biologist wins a $1.03 million, 5 year contract to study how microbes can help clean up Superfund sites
...ly less toxic arsenic 5 to arsenic 3, a more toxic metal
species," she notes. Young holds a doctorate in environmental microbiology from Harvard University and a master's and bachelor of science in microbiology from Cornell University....
...n at remote lakes in the upper midwest. Mercury, a metal
that becomes more concentrated as it travels through the food chain, is dumped in landfills from an array of sources, including fluorescent bulbs, pre-1990 batteries, electrical switches, thermometers and construction waste. The research will soon be...
Vitamin C produces gene-damaging compounds, test-tube study in Science reports
...ompound called a lipid hydroperoxide. When certain metal
ions are present to act as catalysts, the lipid hy...egrade into genotoxins, in place of the transition metal
ions. To investigate, the Science authors added vitamin C to solutions of lipid hydroperoxides ...
Reexamining irons role in heart disease
... oxidized in vitro by treatment with iron or other metal
ions to generate a form that accumulates in cultured cells, mimicking the genesis of foam cells in the early atherosclerotic lesion. The potential importance of iron in atherogenesis has been suggested frequently, and some epidemiological evidence s...
Discover Magazine honors landmine detector, cellular research
... Detector, which quickly and inexpensively locates metal
and plastic landmines. The 2001 Discover Awards, which the foundation sponsored, were presented today during a ceremony at the Manhattan Center in New York City. "Using different approaches, both of these scientists have pursued the common goal t...
Chemists characterize regulators of zinc intake and export in cells
...perone" proteins whose role would be to escort the metal
safely to the specific site where it is needed. "Our work with zinc, copper and other metals involved in human health and disease is helping us to better understand the role these metals play in our body," said OHalloran, who discovered the first c...
Ill winds carry toxic dust
...t could lead to increased risk for cancer or heavy metal
poisoning, leaving Arizona residents to wonder: Do you know where your dust has been? In collaboration with ASU geology Professor Philip Christensen and University of Pittsburgh geologist Mike Ramsey, Stefanov is using images taken from space to map...
New imaging technique could improve outcome of popular heart procedure
...on nearly 500,000 patients each year, uses a small metal
mesh tube (stent) to reinforce an artery re-opened...he number of reflections of acoustic waves off the metal
stent the technique doesnt have high enough resolution to precisely determine if the stent deployed ...
1 2 3 4 5 6 7 8 9 10