bilimselkonular science
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The war between the sexes has been fought on many fronts throughout time — from humans to birds to insects, the animal kingdom is replete with species involved in their own skirmishes. A recent study by Dr. Sarah Eppley and colleagues at Portland State University published in the November issue of the American Journal of [...]
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Good news for heterogeneous catalysis and the hydrogen economy: computers can now be used to make accurate predictions of the reactions of (hydrogen) molecules with surfaces. An international team of researchers, headed by Leiden theoretical chemist Geert-Jan Kroes, published on this subject this week in the journal Science.
Hydrogen on copper
The team developed a new method [...]
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Men whose prostate specific antigen (PSA) rise within 18 months of radiotherapy are more likely to develop spread and die of their disease, according to an international study led by Fox Chase Cancer Center radiation oncologist Mark K. Buyyounouski, M.D., M.S. and presented today at the annual meeting of the American Society for Radiation Oncology [...]
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Despite the fact that summer 2009 had more sea ice than in 2007 or 2008, scientists are seeing drastic changes in the region from just five years ago and at rates faster than anticipated. The findings were presented October 22 in the annual update of the Arctic Report Card, a collaborative effort of 71 national [...]
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An ice core drilled at the Belukha glacier in the Siberian Altai by a Swiss-Russian research team under the leadership of the Paul Scherrer Institute (PSI) in 2001 has now provided new findings in climate research. Oxygen isotopes in the ice were used to reconstruct the temperatures in the Altai over the past 750 years.
The [...]
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Over a period of five years, scientists at the Johannes Gutenberg University Mainz have managed to create a genetically modified mouse in which the activity of the blood stem cells can be tracked. "This mouse was created from a single embryonic stem cell.
We are able to observe its blood stem cells in detail and see [...]
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Observations made by NASA instruments onboard an Air Force satellite have shown that the boundary between the Earth`s upper atmosphere and space has moved to extraordinarily low altitudes. These observations were made by the Coupled Ion Neutral Dynamics Investigation (CINDI) instrument suite, which was launched aboard the U.S. Air Force`s Communication/Navigation Outage Forecast System (C/NOFS) [...]
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Having dense breasts – areas that show up light on a mammogram – is strongly associated with increased breast cancer risk, but "why" remains to be answered. Now, by examining dense and non-dense tissue taken from the breasts of healthy volunteers, researchers from Mayo Clinic have found several potential links.
In two studies being presented simultaneously [...]
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Palm Pilots already perform a variety of functions, and in the future, they may be used as a therapeutic tool that benefits people with personality disorders. In a new study, a University of Missouri researcher used Palm Pilots as electronic diaries to record and analyze mood variability in patients with borderline personality disorder (BPD) and [...]
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There is no association between consumption of fat, protein, or meat and kidney cancer, according to a pooled analysis of prospective studies.
The incidence of renal cell cancer is increasing worldwide, but the cause of the increase remains obscure. Epidemiological studies have produced inconsistent results with respect to an association between consumption of fat, protein, and [...]
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