Tag: "time" at biology news
Time running out for South Asian vultures, ecologists warn
... Pakistan, so it will probably take a considerable time
to remove it from the vultures' food supply. According to Dr Asad Rahmani, Director of the Bombay Natural History Society: "It will be difficult to remove diclofenac from the environment until drugs that are safe for vultures have been identified, so...
NIH awards new $14.5 million, five-year grant to the Scripps Research Institute
... allow these cells to depolarize at about the same time
so that the heart beats as one single tissue and not as a loose collection of cells. Chang has had success using x-ray crystallography. In 2001, he published the structure of the membrane protein in a cover article in the journal Science that provi...
Studying the chemistry of drugs in wastewater
...f those drugs created during chlorine treatment or time
spent in the environment. The topic drew a large audience at the American Chemical Society annual meeting last month, where NIST chemist Mary Bedner was one of several presenters. Among the concerns is possible damage to the environment, animals or p...
New therapy for specific form of leukemia
...he direction of Peter Marynen, shows for the first time
that ABL1 also lies at the root of T-ALL − which has a direct effect on the treatment of T-ALL patients. Indeed, a drug exists − called Glivec − that suppresses the action of ABL1. Glivec has already been successfully administered t...
Don't stand so close to me: A new view on how species coexist
...en watched what happened over very long periods of time
- up to 100,000 generations. Parasitoid wasps, insects that kill other insects by laying eggs in them, account for a fifth of all known multi-celled species. Their 200,000 species places them approximately next to land plants in terms of diversity. T...
US researchers show cottonseed drug is cancer treatment booster
...ours in mice. The study demonstrates for the first time
that (-)-gossypol enhances the anti-tumour efficacy of radiation therapy both in vitro and in vivo with increased induction of apoptosis. Dr. Xu explained: "The significance of this is that Bcl-2 and Bcl-xL proteins are over expressed in many cancers...
32 new grants made for innovative technology R&D
...tion with computer applications and assessing over time
the rate of cognitive impairment, thus facilitatin... complete tooling set in one-third to one-half the time
now required, at significantly lower cost. The Dow Chemical Company (Midland, Mich.) High-Spe...
Amgen investigational therapy, AMG 162, increased bone mineral density with twice yearly injection
... FOSAMAX® (alendronate)* treatment in the same time
frame. The one year results of the ongoing multi-center, Phase 2, dose ranging trial in healthy postmenopausal women with low BMD were presented at the American Society for Bone and Mineral Research (ASBMR) 26th Annual Meeting in Seattle. This doub...
Of lice and men
...umans, archaic and modern humans had to coexist in time
and space," Clayton says. What Lice Say About Theories of Human Evolution Some of the findings conflict with two major theories of human evolution the "replacement model" and "multiregional model" and instead fit best with a ...
Offspring at risk from maternal occupational exposure to solvents
...ose and exposure to specific solvents, as well the time
during pregnancy of exposure." The study looked at...e between the ages of three and nine years (at the time
of testing). The exposed women reported a high level of protective equipment use at work. These wome...
Endangered frogs coexist with fungus once thought fatal
...rked frogs were released back into the wild at the time
the samples were collected. The authors found fungal infections in the samples of two species, including T. eungellensis . An analysis of tissue from recaptured frogs during the same period showed that the prevalence of infection did not vary from y...
A treatment, not a cure: Calcium silicate neutralizes an acidic stream
...the acid rain problem. At most, it is a way to buy time
until the real solution emerges-- a reduction in air pollution." He goes on to warn that, "Viewing calcium applications as a prescriptive cure for acid rain is like a runner viewing steroids as a cure for a bad knee. At the end of the race, when the...
How roots control plant shoots
...s. So Van Norman kept cutting off the roots each time
they started to regenerate. The plants produced normal leaves, indicating the mutant roots were sending a chemical signal to stop leaf growth. To confirm that, Van Norman grafted mutant roots to normal four-day-old shoots. "We got small leaves," ...
Research team develops nonhuman primate model of smallpox infection
... include near uniform mortality, but a longer mean time
to death. Using a ten-fold lower dose, however, also resulted in lower mortality overall, so further refinement of the model is indicated. "Despite its limitations," the authors wrote, "the intravenous variola primate modelhas already provided valuab...
New Stanford center probes nanoscale material
...? How does the spin state of an electron vary over time
and distance? What are the mechanisms of high-temp...s teachers who work with younger students. "By the time
[students] reach high school, a lot of them have already turned off [to science]," Moler said. The c...
Daphne Koller named MacArthur Fellow
...'s really a major decision, and they give you some time
to think about it." The news always comes as a big surprise, since the selection process is confidential and no notification is given to fellows until final selections are made. Koller's research tackles questions of how complex information with ...
Stanford cooling tool may improve performance of athletes, soldiers
...ople in 10 minutes, down from the typical recovery time
of two hours." Grahn and Heller went on to de...erobic exercise, such as weight lifting, where the time
to exhaustion is very short, the effects on exercise performance were dramatic. "We helped a weight-...
Head lice reveal contact between modern and ancient humans
...tically consistent with the more recent divergence time
of the lice (at 1.18 mya). Reed and colleagues therefore propose a scenario in which H. sapiens and H. erectus carried distinct types of lice. As the first waves of modern humans left Africa about 100,000 years ago and modern humans replaced arch...
Dying cells encourage neighbors to grow
...ibute to tumor growth. It has been known for some time
that cells that die as a result of injury-provoked programmed cell death, also known as apoptosis, may stimulate the growth of surrounding cells. "Such compensatory mechanisms may be essential to allow for the elimination of as many damaged or danger...
Putting physiology into the Nobel Prize: 2004 marks 100th anniversary of Pavlov's award
...vents" affected "physiological function. From this time
on it was clear that if integrative physiology was... is still with us and is likely to remain for some time
because it is one of the ways in which the tangled relationship between the brain and the control of...
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