Diatom genome reveals key role in biosphere's carbon cycle
... helps explain the ability of diatoms to withstand long periods with little sunlight--even to overwinter--and then start growing really rapidly once they return to sunlight," she says. Three or four microns in width--as many as 70 could fit in the width of a human hair--Thalassiosira pseudonana is among...Don't stand so close to me: A new view on how species coexist
...an reproduce; how many children you will have; how long you can live for; and crucially, how good you are ...er model, and then watched what happened over very long periods of time - up to 100,000 generations. Parasitoid wasps, insects that kill other insects by la...US researchers show cottonseed drug is cancer treatment booster
...was researched as a male contraceptive in China as long ago as 1929 although the results were not published until 1957, but after large scale studies in the 1970s it was abandoned because some men remained infertile after stopping treatment. There were plans in Brazil in the 1990s to market the drug but t...National Science Foundation awards $2 million grant to UC Riverside
...n studied on this scale," Allen said. "People have long been concerned about the impact nitrogen deposition has, and other concerns about weed invasion, but there has never been a landscape-scale study that links nitrogen with invasive species." The study will determine the amount of N required to build u...... of humans is surprising because "Homo erectus has long been thought to have gone extinct hundreds of thousands of years ago," although recent studies suggested Homo sapiens might have had contact with Homo erectus in Asia 50,000 years ago. Reed says: "Not only did modern humans live contemporan...An embryonic stem cell model for Parkinson's disease
...arkinson's neuropathology. Oxidative stress has long been associated with neuronal cell death and neurodegenerative diseases like Parkinson's. Proving a causal relationship between oxidative stress and neurodegeneration, however, requires establishing a molecular mechanism. These results support a link...Columbia University scientist wins 2004 Nobel Prize
...eased," said Dr. Axel. "This honor represents the long efforts of the many faculty, students and fellows who have worked within our laboratories at Columbia University Medical Center. I have received enormous support over the years beginning with the scholarship I received to attend Columbia College. I...A treatment, not a cure: Calcium silicate neutralizes an acidic stream
...ea, the buffering effects of the Wollastonite were long lasting. By adding the pellets to 5.5% of the stream, acidity was suppressed for over four months. It is likely that a larger addition would have resulted in a longer neutralizing effect. Wollastonite degraded slowly in the system; as a result water ...Head lice reveal contact between modern and ancient humans
...de evidence that P. humanus must have originated long before its H. sapiens host and that the New World lineage remained isolated from the worldwide one for most of the past 1.18 million years. It is unlikely, the authors argue, that two ancient louse lineages could embark on such different evolutiona...Running not swimming or biking is best kind of loading exercise for childrens bone growth
... hence short sprints should build more bone than a long jog," (2) "OI is best improved by adding more exercise sessions per week rather than lengthening the duration of individual sessions," (3) "to reduce exercise time, it is far better to shorten each session than to reduce the number of sessions," and ...New biosensor rapidly detects deadly foodborne pathogen
...nsors to detect their presence, but it can take as long as seven days to complete a test using conventional methods, Geng said. Other tests rely on DNA markers, but these also can take days to process, he said. That's a problem because by the time test results come back, products may already b...University of Oregon professor wins 2004 Spiers Medal
... of Chemistry. The Spiers Medal adds to a long list of major awards honoring Richmond's scientific research achievements during her 19 years at the University of Oregon. Among the most notable are the American Chemistry Society's Francis P. Garvan Medal of the ACS (1996), the Oregon Outstanding S...September/October 2004 Annals of Family Medicine tip sheet
...hey patient and physician have been together for a long time and 2) if the patient and physician have been together through major life events such as a serious illness, hospitalization, birth or death. When both are present, patients place a great deal of value on continuity of care. They note that simp...Does a time delay between prostate cancer diagnosis and start of radiation treatment matter?
Men who wait as long as three months after their prostate cancer diagno...nions, more labor-intensive treatment planning and long wait times from the start of planning to the start of treatment. Often if a delay is expected hormo...Marine Biological Laboratory summer investigator wins Nobel Prize in Chemistry
...ts other proteins for elimination. Scientists have long known that all cells manufacture and subsequently discard an array of proteins involved in a variety of cellular processes. Although many scientists over the years have focused their research on learning more about how cells make proteins, until rece...The PSA bounce Does it have clinical significance?
...l treatment, including hormones, these men live as long as those who don't experience a PSA bounce." "Because this is a large study, it provides solid evidence that a PSA bounce may not automatically dictate hormone intervention. Ideally, this study should be conducted with more modern radiation therap...T cell's memory may offer long-term immunity to leishmaniasis
...ttempts to create a vaccine for leishmaniasis have long been stymied by the fact that the helper T cells, ...persist in the absence of obvious parasites for as long as five months," Scott said. "Since we still do not know much about these new T cells, our next ste...MIT: Recycling of scrapped electronics studied
...emissions, energy use, and operating costs. In the long run, a variety of independent metrics could lead to significant improvements in recycling efficiency. "We're interested in measures of performance that will lead to the best electronics-recycling practices. But if we really understand the re...Experts present new research on hot topics in aging at GSA's annual meeting in Washington, DC
...range actuarial balance, is under-financed for the long term. In order to respond to the challenge of the baby boom and later beneficiaries, the long-term financing gap needs to be closed. This symposium offers further discussion of Social Security reforms and their potential impact on the future program ...Report: How 10 top new technologies will help world reach globally-agreed goals by 2015
...ombinatorial chemistry for drug discovery. "In the long run such emerging technologies tend to help people in developing countries more than in developed countries," says co-author Abdallah S. Daar, MD, co-director of the Canadian Program on Genomics and Global Health at the JCB. "A good example is vaccin...