Archive for June, 2010

By Carlos -

ScienceDaily (2010-06-10) — The ongoing search for evidence of past or present life on Mars includes efforts to identify organic compounds such as proteins in Martian soil, but their absence to date remains a mystery. A new theory to explain what happens to these carbon-based molecules is presented in a new article.

http://www.sciencedaily.com/releases/2010/06/100610154457.htm?

By Carlos -

ScienceDaily (2010-06-09) — Scientists have identified a gene that enables Tibetans to thrive at altitudes where others get sick. A previous study published May 13 in Science reported that Tibetans are genetically adapted to high altitude. Now, a second study by a different team pinpoints a particular site within the human genome — a genetic …

By Carlos -

ScienceDaily (2010-06-18) — The pancreas has its own molecular clock. Now, for the first time, a new study has shown this ancient circadian clock regulates the production of insulin. If the clock is faulty, the result is diabetes. The researchers show that insulin-secreting islet cells in the pancreas, called beta-cells, have their own dedicated clock. …

By Carlos -

ScienceDaily (2010-06-09) — Researchers have developed a new mathematical model to describe how the human brain visually identifies objects. The model accurately predicts human performance on certain visual-perception tasks, which suggests that it’s a good indication of what actually happens in the brain, and it could also help improve computer object-recognition systems.

http://www.sciencedaily.com/releases/2010/06/100608101029.htm

By Carlos -

ScienceDaily (2010-06-09) — Defects in insulin function — which occur in diabetes and obesity — could directly contribute to psychiatric disorders like schizophrenia. Researchers have discovered a molecular link between impaired insulin signaling in the brain and schizophrenia-like behaviors in mice. The findings offer a new perspective on the psychiatric and cognitive disorders that affect …