Minggu, 26 Desember 2010

ScienceDaily Top Science Headlines

for Sunday, December 26, 2010

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Preplay: How past experiences subconsciously influence behavior (December 24, 2010) -- Researchers report for the first time how animals' knowledge obtained through past experiences can subconsciously influence their behavior in new situations. ... > full story

Arsenic agent shuts down two hard-to-treat cancers in animal experiments (December 24, 2010) -- Researchers have found that an arsenic-based agent already FDA-approved for a type of leukemia may be helpful in another hard-to-treat cancer, Ewing's Sarcoma (ES). The research, based on animal studies, also suggests the drug might be beneficial in treating medulloblastoma, a highly malignant pediatric brain cancer. ... > full story

NASA's next Mars rover to zap rocks with laser (December 24, 2010) -- A rock-zapping laser instrument on NASA's next Mars rover has roots in a demonstration that Roger Wiens saw 13 years ago in a colleague's room at Los Alamos National Laboratory in New Mexico. The Chemistry and Camera (ChemCam) instrument on the rover Curiosity can hit rocks with a laser powerful enough to excite a pinhead-size spot into a glowing, ionized gas. ChemCam then observes the flash through a telescope and analyzes the spectrum of light to identify the chemical elements in the target. ... > full story

Emerging drug class may enhance red blood cell production in anemic patients (December 24, 2010) -- By determining how corticosteroids act to increase production of red blood cell progenitors, researchers have identified a class of drugs that may be beneficial in treating some erythropoietin-resistant anemias. One such anemia is Diamond-Blackfan anemia (DBA), which is frequently treated with corticosteroids, despite their severe side-effects. The identified class of drugs may be able to treat other anemias, including those resulting from trauma, sepsis, malaria, kidney dialysis and chemotherapy. ... > full story

Heat shock protein drives yeast evolution (December 24, 2010) -- Researchers have determined that heat shock protein 90 (Hsp90) can create diverse heritable traits in brewer's yeast by affecting a large portion of the yeast genome. The finding has led the researchers to conclude that Hsp90 has played a key role in shaping the evolutionary history of the yeast genome, and likely others as well. ... > full story

Most challenging Christmas plastic wrapping could be recycled with new technology (December 24, 2010) -- On average we each consume 120 grams of plastic wrapping on Christmas gifts most of which is of a type which almost impossible to recycle. Now researchers have devised a new technique which could process 100% of Christmas and other household plastic instead of the tiny fraction that currently actually gets processed. ... > full story

Pterygotid sea scorpions: No terror of the ancient seas? (December 24, 2010) -- New experiments have generated evidence that questions the common belief that the pterygotid eurypterids ("sea scorpions") were high-level predators in the Paleozoic oceans. ... > full story

Site in brain where leptin may trigger puberty identified (December 24, 2010) -- Researchers have pinpointed a tiny site in the brain where the hormone leptin may help trigger the onset of puberty. ... > full story

Fast sepsis test can save lives (December 24, 2010) -- Blood poisoning can be fatal. If you suffer from sepsis, you used to have to wait as much as 48 hours for laboratory findings. A new diagnostic platform as big as a credit card will now supply the analysis after as little as an hour. This system is based on nanoparticles that are automatically guided by magnetic forces. ... > full story

Alzheimer's: Tau disrupts neural communication prior to neurodegeneration (December 24, 2010) -- A new study is unraveling the earliest events associated with neurodegenerative diseases characterized by abnormal accumulation of tau protein. The research reveals how tau disrupts neuronal communication at synapses and may help to guide development of therapeutic strategies that precede irreversible neuronal degeneration. ... > full story

Six years after the 2004 tsunami disaster, technical setup of the early warning sysem completed (December 24, 2010) -- Six years after the tsunami disaster of Dec. 26, 2004, the set-up of the German-Indonesian Tsunami Early Warning System for the Indian Ocean (GITEWS) has been completed. ... > full story

How to delay Christmas tree needle loss (December 24, 2010) -- Researchers have discovered what causes Christmas tree needles to drop off, and how to double the lifespan of Christmas trees in homes. ... > full story

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