Impact of Meteorites, Drop in Sea Level Caused Mass Extinctions 65 Million Years Ago
...he sea level change, and still others thought that background extinction accounted for most of the extinctions; we're seeing evidence that all of them were factors," says Marshall. Marshall and Ward found evidence for a decline in the abundance of species, and perhaps the extinction of more species than...Birds Deal With "Cocktail Party Effect"
...able toconcentrate on one voice that is mixed with background sounds.The ability may help them learn language quickly; by tuning outthe extraneous noise, babies are able to focus on the grammar andrhythm of language....Munching Microbes Make A Meal Out Of Toxic Substances
...ading organisms in the soil was higher than normal background levels. "Our conclusion is that there are more of this type of microbe at these sites because they're eating one of their favorite foods -- petroleum," Nies says. The standard method for cleaning up contaminated soil is to excavate it and truck it to......diabetes. They are known to often have familial background but the genetic factors regulating autoimmune response have so far remained unclear. The new findings are expected to have considerable implications in the understanding of the mechanisms of destructive autoimmune response. The dise......es are being developed. The laboratory's extensive background in arms control nonproliferation detectionand monitoring will serve as a solid foundation for the remote sensing elementsof the Agriculture and Food Processing Initiative. ABCD Center The Agri-Business Commercialization and Development Center, for..."Genes, Vitamins, Homocyst(e)ine And Cardiovascular Diseases"
...ntation depends in parton the individual's genetic background (shown in Figure 4). Much is known on potential mechanisms on how homocyst(e)ine damagesarteries and favors thrombosis, as well as on the fact that elevated levels ofhomocyst(e)ine are usually corrected with vitamin supplementation. However...Induced Mutant Mouse Models Of Lipoprotein Disorders And Atherosclerosis
...its onto different mouse strainshas revealed large background effects, and quantitative trait locus mapping hasbegun to identify the differences between the strains in atherosclerosissusceptibility and resistance genes. Finally, the mouse atherosclerosis models are being used to examinenutritional and...GCTE/LUCC Open Science Conference:
...this conference andgive you, in what follows, some background information on the content and goalsof this conference. The Conference This is the first conference of this kind, in which two major internationalresearch programs get together to convene the largest conference ever organizedon the effects of globa...'Mean Gene' Found In Africanized Honey Bees
...TS:A copy of the Genetics article is available for background from the Purdue News Service, (765) 494-2096. Three color photographs also are available: "Hunt.Hive" shows researcher Greg Hunt working with a bee hive; "Hunt.Attack" shows the Africanized bees during a swarming attack; and "Hunt.Map" is a map illus...Water Quality In Indiana's White River Basin Affected By Urban And Agricultural Activities
...ompounds in streambed sediments tended to be above background concentrations in urban areas, particularly Indianapolis," said Crawford. "Concentrations are generally not a human-health concern; however, fish-consumption advisories for PCB's and mercury are in effect for some locations in the basin." Several che...Purdue Finding May Snuff Out The Sniffles
...E TO JOURNALISTS:A copy of the journal article and background information on X-ray crystallography are available....From The Home Front To The River Front, USGS Updates Water-Quality Information
...copies of the reports are provided in the attached background statement. WATER QUALITY IN THE LOWER SUSQUEHANNA AND POTOMAC RIVER BASINS- BACKGROUND The full-color reports summarize USGS studies that began in 1992 in the Lower Susquehanna and Potomac Basins. Single copies of ...Biggest Acoustics Meeting Ever
...for varying levelsof sound intensity and levels of background noise. Plenary Lectures Internationally recognized experts in acoustics will deliver a series of 16 plenary lectures at the meetingdealing with the hottest topics in acoustics. Some examples include: "How Listeners Find the RightWords," by Anne C...Clever Chemistry Protects Beetle Babies
...f the journalarticle. "It is bright yellow on the background of green leaves, it has nomechanical defenses, and it is exposed to anything that comes around,particularly aggressive ants." The pupae of some beetle species defend themselves, Eisner explains, withmandible-like contraptions on their abdomens. By ...University Of Washington Scientists Discover A Gene That Causes Deafness And Dizziness In Mice
...deafness in mice because we can controlthe genetic background of mice, thereby allowing us to make the jump to humansfrom a well-examined model organism," said Tempel. Studies on other mousemutants have predicted several human deafness genes and have identified newgenes that turn out to be critical for normal h...Virus Linked To Causing Enlarged Hearts In Children With Certain Genetic Makeup
...s immune system to respond. The children's genetic background made them more susceptible to this virus,which led to an overreaction of the normal immune system response, making arelatively common virus -- coxsackievirus B (CVB) -- potentially deadly. "There are many different variants of this virus and most all......ared to a control group of women of thesame ethnic background without breast cancer. The study was conducted byinvestigators from Memorial Sloan-Kettering in collaboration with investigatorsfrom the University of Toronto in Ontario, McGill University in Montreal, Canadaand other research centers. In one group,...Research Answers Burning Questions About Pollution
... scatter the laser light, which gives you a giant background signal that has to be separated out from the real...ic oxide. But that reading also contains a lot of background noise. We then change the wavelength of the laser so that we don't get a signal from the nitric ox...... I had planned on about 18 to 20 months to get the background information so we could correctly design the exper...rt amount of preparation and the lack of available background information, Vierling says he is cautiously optimistic about the success of the experiment. "Somethi...... and Sally Fairfax, faculty at UCBerkeley, provide background for several case studies to be presented.Huntsinger describes her research, which tests the idea that ranching as a formof resource management can play a part in landscape conservation. Fairfax reviews the changing perceptions of the ranch -- long a...