Inability to pump oxygen during exercise could pinpoint early heart problems
...gen is used during the test. Normally there is a sharp increase in oxygen pulse during the first few minutes of exercise. This rise continues with exercise, and the load on the heart also rises as it works harder to meet the body's increased needs for oxygen carried by the blood. However, researchers f...New book says Northwest salmon could face same fate as those in Northeast, England
...iolations. It was hoped these steps would halt the sharp salmon population decline in the rivers. The year was 1715, and King George I of England enacted the laws in an effort to protect salmon runs throughout Great Britain. The attempt, and many more that came after, proved to be largely fruitless. Today ...Huge iceberg wreaks havoc on Antarctic marine ecosystem, study finds
...go and van Dijken wrote. The likely reason for the sharp decline, they noted, was the unusually high sea ic...l." As a result, many Adlie colonies experienced a sharp decline in 2000 and 2001, the authors said. "Considering that the calving of C-19 resulted in a far...Bones from French cave show Neanderthals, Cro-Magnon hunted same prey
...he Grotte XVI record, the researchers also found a sharp drop in the number of cave bears from Neanderthal to Cro-Magnon times. "Cave bears and humans may have been competing for the same living space and this may have led to their extinction," Grayson said. He added that it is not clear if the decline ...The 'fixed' hotspot that created Hawaii was not stationary after all, study finds
...eutian Trench. According to most researchers, this sharp northward bend records a change in the direction of the Pacific Plate as it passed over the fixed hotspot about 47 million years ago. To test this hypothesis and determine the true origin of the Emperor Seamounts, Tarduno, Scholl and other scientists...Finicky snails provide new clues to the evolution of coastal ecosystems
...long to the same species, then why is there such a sharp difference in the feeding behaviors of northern and southern populations? Do whelks born and raised in the Pacific Northwest inherit their dislike for sea mussels, or is it a learned behavior? To find out, the scientists decided to raise baby whelks ......t is unclear how well reefs later recover, and the sharp rise in coral bleaching since the 1980s has sparked dire predictions for their future (see Box). Most marine biologists agree that bleaching is caused by rising sea temperatures, and the best way to stop it is to cut carbon emissions. But that is an...[Mis]understanding village abandonments
...The centuries-long persistence of communities is a sharp contrast to the incessant movement of houses." The Mesa Verde from southern Colorado and Utah into northern Mexico is mostly desert or semi-desert with large regions at high altitude, making it necessary for its inhabitants, past and present, to em...Study of living eye in real time now possible with optics technology
...f human subjects and for the first time get clear, sharp images of features such as blood flow in the eye's...eye from focusing light from the world into a nice sharp image on the retina," says Austin Roorda, assistant professor of optometry at the University of Hous...Dad's coochy coos leave baby guessing
...n them to stay away from dangerous objects such as sharp instruments or electrical appliances. When the program analysed the acoustic properties of nearly 700 excerpts of speech, it correctly distinguished between approving or disapproving comments 80 per cent of the time. But to the researchers' surprise,...Science picks-leads, feeds and story seeds (January 2003)
...e Shift? - Streamflow in the United States took a sharp upturn around 1970 according to a recent USGS study looking at streamflow patterns over several decades (1941-1999). Such an abrupt rise in streamflow, rather than a gradual increase, signals a shift in the climate system that likely will remain rel...'Scientific balancing act' dominates AAAS top ten list of science policy stories for 2002
... lack of final FY 2003 U.S. appropriations meant a sharp decline in congressionally-earmarked appropriations for R&D in the current year. However, it is anybody's guess what will happen in the late-night sessions when Congress reconvenes in January and is faced with the need to pass the '03 budget before t...Is the roller coaster G force threat all spin?
... car passengers are forced against the door during sharp turns, pilots feel accelerations as they make quick maneuvers except for pilots, these accelerations can be as much a five to nine times the force of gravity (or Gs). The biggest risk of high Gs is a loss of consciousness as blood pools in the limbs...Gene therapy reverses muscular dystrophy in animal model
...gun to develop symptoms of the disease developed a sharp host immune response that eliminated the therapeutic gene. The results have also been limited because the dystrophin gene is large, and until now, there has not been a good way to deliver the entire gene and have it remain in the muscles of the mic...UCSD researchers fabricate tiny 'smart dust' particles
...ace in these particles provides colors that are so sharp from the visible to the infrared that a laser can read thousands of distinct colors corresponding to separate chemicals. In this way, the UCSD researchers say these coded particles can perform thousands of biochemical assays in a small beaker or a Pe...Macarthur Award winning physiologist to present Scholander Award and lecture
...are in dispute and their breeding population is in sharp decline. One such initiative by the TRCC is the development of a new satellite-based tagging technology that has proven that it can shed new light on tuna migration. The microprocessor tags were deployed in 1996 and 1997 by scientists from Stanford ...Why the hammerhead shark's head is in the shape it's in
...irectly under the camera as well as when they made sharp turns (defined as a change in trajectory of > ...ammerheads show a greater propensity for executing sharp turns, and maintain a higher speed through the turn. However, the results do not present a complete...MIT technique could improve cartilage repair
...s (billionths of a meter) in diameter. "This is in sharp contrast to other biopolymer microfibers, which are some 1,000 times larger in diameter," he said. "That smaller size scale makes all the difference in the world," Zhang continued. For example, growth factors could be tethered to the peptide structur...Freezing cancer cells makes them prime targets for anti-cancer drug, new study finds
...oduce an average of 242 colonies in six trials. In sharp contrast, cells frozen with a 500-nanomoles-per-liter concentration of bleomycin produced no colonies after four trials, indicating a complete wipeout. Even the extremely low bleomycin concentration of 10 nanomoles per liter had an effect, leaving on...Scientists devise new 'gene silencing' strategy: Genome, biomedical research expected to flourish
... accompanying PDF). "There hasn't been a tool this sharp in a long time," says Doug Conklin who, along with Greg Hannon, led the Cold Spring Harbor research team. The new technique is published in the April 15 issue of Genes and Development. It stems from work in several laboratories, including a discovery...