'Imprinted' gels hold promise for future medical devices
...taining glucose molecules and then used a slightly acidic chemical to remove the glucose, leaving behind spa...inding sites. Then, the glucose is removed with an acidic chemical, leaving the empty, synthetic binding sites....Researchers report on possible biological effects of deep-sea CO2 sequestration
... CO2 causes a decrease in seawater pH, creating an acidic environment that must be compensated for by physiological responses in living organisms." Decreased pH can result in metabolic suppression which can inhibit growth and reproduction. Previous studies have established that deep-sea fish and invertebrat...Humboldt awarded for study of acid-mine drainage in Germany
...ing of pyrite and associated metal sulfides. These acidic effluent flows, from mine entrances and waste piles, mix with air and oxygenated surface water and precipitate metal oxides, oxyhydroxides, and/or hydroxysulfates." These phases form mineral/rock coatings and sediments down to the nanometer scale th...'Sperm and germ'-fighting contraceptive enters trials
...s are acidic. Most germs just dont survive long in acidic environments. Semen eliminates vaginal acidity for several hours to allow sperm to leave the vagina and enter the uterus. Unfortunately, this also can help make it possible for germs to infect the sexual partner. Cone says BufferGel should block this...Signs of recovery in Adirondack lakes apparent, say researchers
... increase in the pH has been observed, a sign that acidic levels are decreasing," says Director Sandra Nierzwicki-Bauer. Levels of nitrogen influenced by nitric oxide, a primary source of acid rain, have decreased moderately in 18 of the 30 lakes the DFWI has monitored since 1994 through its federally funde...NSF grant to grow methane-producing microbes in lab
...o one has ever cultured and grown methanogens from acidic wetlands in a laboratory," says Stephen Zinder, Co...ere the methanogens work, especially in the highly acidic bogs." If the Cornell researchers succeed in duplicating the carbon-rich, anaerobic, acidic conditio...Gene duplication adapts to changing environment
... works six times better than RNASE1 under the more acidic conditions. "Our results suggest that this is an adaptation to the more acidic environment of the small intestine in colobine monkeys," says Zhang. But if the new enzyme is so mu...Counting semi-viable bacteria in cheese
... effect. However, some bacteria do not survive the acidic gastric juices and the bile in the small intestine. Using this new method, producers can test how well bacteria can reach the intestines in an active form....Penn State engineers boost hydrogen production from fermentation
... sucrose with the heat-treated soil under slightly acidic conditions in the absence of oxygen produced high concentrations of hydrogen gas. Releasing the gas continuously during glucose processing resulted in 43 percent more hydrogen than when the gas was released intermittently. Logan notes that wastewate...Fungi help some trees weather acid rain, not all
...ctly to the trees before the nutrients are lost to acidic soils. The NSF-sponsored study at Hubbard Brook is...ifers, beech and birches) growing in calcium-poor, acidic soil was coming from apatite, a soil mineral mined by fungi on tree roots. Apatite, pronounced lik...Frozen 'lake' beneath Antarctica ideal to test sterile drilling techniques
...no oxygen, a starvation diet and probably a highly acidic or salty environment. He estimated that colder ice as old as 400,000 years could still support one cell per cubic centimeter. Drilling in Antarctic ice, including to within about 100 meters of Lake Vostok, has turned up some bacteria, according to R...Low-carbohydrate, high-protein diets increase risk of kidney stones and may raise bone loss risk
...kidney stone risk, according to the study, are the acidic content of animal meat and the lack of alkaline foods in the diet. The findings are included in the August issue of The American Journal of Kidney Diseases. Researchers report that acid excretion a marker for the acid load in the blood increased as...New compound may immobilize AIDS virus, certain radionuclides
...lood as antiviral agents, because blood is neither acidic nor basic but instead is neutral. Even worse, the ...e - are extremely basic. These environments attack acidic compounds and cause them to fall apart, says Nyman. Nyman's discovery of the base-stable HPA came ab...Songbird population declines linked to acid rain
...the forest floor could decompose more slowly under acidic conditions. At the same time, acidic conditions could also increase the amounts of toxic aluminum and heavy metals (such as lead, cadmium...New mouse model shows how news of pathogen reaches immune system
...HC class II molecules carried their cargo from the acidic bowels of the dendritic cells to the surface. Once the cargo arrives on the surface, it can presumably alert a T cell to fight the infection. For these experiments, graduate student Amy Chow, first author of the paper, used a virus to genetically tag...Study sheds light on mess in polluted streams
... journal Science, the gel results when runoff made acidic by mining or acid rain collects aluminum from local soils and then mixes with stream water that is less acidic. In subsequent chemical reactions, aluminum molecules link together to form polymer gel. Scientists call the gel "floc" and say its influen...Research reveals how an acid dissolves, molecule by molecule
... used water molecules as a solvent to dissolve the acidic molecule hydrogen bromide. "We chose to work with...ured by one of the H2O water molecules, forming an acidic H3O+ ion compound and leaving behind a now negatively charged and reaction-ready bromide ion, Br-. ...NSF awards $37.9 million in grants to study biocomplexity in the environment
...chemistry of iron and sulfate reduction in extreme acidic environments. GENEN awardees will conduct research in such areas as: the interaction of viral genomes with the marine environment; analysis of factors determining the ecological function and resilience of microbial communities; and development of m...Ion channels allow bacteria to resist stomach acid
...on pump that keeps the cytoplasm from becoming too acidic in the acidic environment of the stomach. However, said, Miller, these "proton pumps" -- because they move net pos...UMass team to study bioremediation of acid, heavy metals from collapsed mind
AMHERST, Mass. Highly acidic drainage from an abandoned sulfide mine in Rowe is... the stream channel." The drainage waters are more acidic than vinegar, with pH values around 2, and carry large loads of metals, including copper, zinc, and ...