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Science News for September 26, 2008


NASA's dirty secret: Moon dust

Researchers are studying the effects of lunar dust on the respiratory system and developing technologies to clean it from space suits. The powdery grey dirt is formed by micrometeorite impacts that can wreak havoc on equipment, but its unique properties also make it susceptible to magnets.

Tsunami invisibility cloak, dark energy v. the void, sorting nanotubes with light, and more

Physicists have made groundbreaking discoveries in various fields of research. Researchers created an 'invisibility cloak' for ocean-based structures to withstand tsunamis. Meanwhile, a team at Oxford University proposed that dark energy may be an illusion and instead, we live in a unique void in the universe. Additionally, scientists ...

SourceAmerican Physical Society·JournalPhysical Review Letters·DateSep 26, 2008

Penn biophysicists create new model for protein-cholesterol interactions in brain and muscle tissue

Researchers created a new model of behavior for the nicotinic acetylcholine receptor, showing that cholesterol is essential for its structure and function. The findings have broad implications for pharmacology and may shed light on recent data indicating low cholesterol's harmful effects on brain cells.

SourceUniversity of Pennsylvania·JournalProceedings of the National Academy of Sciences·DateSep 26, 2008

Looking for water on Mars

Researchers at Decagon Devices Inc. successfully measured thermal properties of Martian regolith using a short, fat needle technique, expanding understanding and accuracy of climate models. The study's findings have potential applications in improving commercial thermal properties sensors on Earth.

Don't forget the vitamin A when working with its carrier protein

A study found that vitamin A's carrier protein, retinol-binding protein (RBP), was significantly lower in obese subjects than nonobese subjects. This suggests a potential link between RBP and insulin resistance in obesity. Further research is needed to determine the role of apo-RBP, an unbound form of RBP, in mediating insulin signaling.

SourceSociety for Experimental Biology and Medicine·JournalExperimental Biology and Medicine·DateSep 26, 2008

Researchers study how pistachios may improve heart health

Researchers found that pistachio diets can beneficially affect cardiovascular disease risk factors in a dose-dependent manner. The study suggests that pistachios may decrease CVD risk profile through effects on Stearoyl CoA Desaturase (SCD) and other bioactive substances.

SourcePenn State·JournalAmerican Journal of Clinical Nutrition·DateSep 26, 2008

Argonne scientists peer into heart of compound that may detect chemical, biological weapons

Researchers at Argonne National Laboratory have discovered a new compound that could potentially detect chemical and biological weapons over long distances. The compound, (A)ZrPSe6, was made possible by the unique beamline of the Advanced Photon Source, allowing scientists to analyze its remarkable properties.

SourceDOE/Argonne National Laboratory·JournalJournal of the American Chemical Society·DateSep 26, 2008