(Phys.org) —A complex system can, in principle, be observable – that is, the system's complete internal state can be reconstructed from its outputs, which would ostensibly involve describing in comple ...
Mar 07, 2013
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(PhysOrg.com) -- Good chemists are passive-aggressive -- they manipulate molecules without actually touching them.
Mar 10, 2011
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The structures of many protein molecules remain unsolved even after experts apply an extensive array of approaches. An international collaboration has led to a new, high-performance method that rapidly determined ...
May 01, 2011
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(Phys.org)—Miniaturized laboratory-on-chip systems promise rapid, sensitive, and multiplexed detection of biological samples for medical diagnostics, drug discovery, and high-throughput screening. Using ...
Feb 12, 2013
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From bacteria to humans, all cells use molecules of adenosine triphosphate (ATP) as fuel to power a broad range of biochemical reactions. For example, massive multi-subunit enzymes known as V-ATPases convert ...
Mar 16, 2012
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(Phys.org) —Many of life's processes rely on light to trigger a chemical change. Photosynthesis, vision, the movement of light-seeking or light-avoiding bacteria, for instance, all exploit photochemistry. ...
Mar 15, 2013
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(Phys.org)—Since Edison's first bulb, heat has been a mostly undesirable byproduct of light. Now researchers at Rice University are turning light into heat at the point of need, on the nanoscale, to trigger ...
Dec 13, 2012
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Weizmann scientists have revealed a new kind of on-off switch in the brain for regulating the production of a main biochemical signal from the brain that stimulates cortisol release in the body.
Feb 23, 2012
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From man-made toxic chemicals such as industrial by-products to poisons that occur naturally, a water or food supply can be easily contaminated. And for every level of toxic material ingested, there is some level of bodily ...
May 14, 2012
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(Phys.org) -- Cornell nanotechnology researchers have devised a new tool to study epigenetic changes in DNA that can cause cancer and other diseases: a nanoscale fluidic device that sorts and collects DNA, ...
May 24, 2012
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(Phys.org)—The sorcerer's apprentice started a water-carrying system, but couldn't stop it, and soon he was up to his neck in water, and trouble. Living cells have a better design: When they activate a ...
Sep 06, 2012
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UT Southwestern Medical Center researchers have found that a naturally occurring protein -- transforming growth factor beta1 (TGF-ß1) -- which normally suppresses the growth of cancer cells, causes a rebound effect after ...
Dec 01, 2009
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Researchers at the University of Calgary found that amino acid residues form a type of barrier to help in the process of electron transfer between proteins.
Jun 14, 2010
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Biologists at the University of California, San Diego have succeeded in unraveling, for the first time, the complete chain of biochemical reactions that controls the synthesis of auxin, the hormone that regulates nearly all ...
Oct 24, 2011
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The endoplasmic reticulum of cells provides a pivotal quality-control system that eliminates improperly folded, or misfolded, glycoproteins, such as antibodies and hormones. The UDP-glucose:glycoprotein glycotransferase ...
Oct 03, 2012
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