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Quantum Capture: Photosynthesis tries many paths at once

04-14-2007 · Science News Online

The wavelike behavior of energy in chlorophyll might explain how plants are so efficient at using solar energy.

Keywords: quantum, capture, photosynthesis, tries, many, paths, once, photosynthesi, try, path

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Specialized, bone-crushing wolves of Alaska disappeared long ago
06-21-2007 · EurekAlert!
The ancient gray wolves that once roamed the icy expanses of Alaska represented a specialized form that apparently died out along with other big animals at the end of the Pleistocene, many thousands of years ago, researchers report online on June 21st in the journal Current Biology, a publication of Cell Press.
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Glucose levels trigger compensation for type 2 diabetics
01-02-2007 · EurekAlert!
Many individuals with type 2 diabetes are diabetic because their body no longer responds to the hormone insulin. Before they become clinically diabetic their body tries to compensate for the lack of insulin responsiveness by increasing the mass of insulin-secreting cells (beta cells) in the pancreas. A new study shows that in mice with high-fat diet-induced insulin resistance, changes in glucose concentration are likely to be the main trigger of increased beta-cell mass.
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Rise of dinosaurs in Late Triassic more gradual than once thought
07-19-2007 · EurekAlert!
The ancestors of dinosaurs seemed to disappear before the dinosaurs took over the Earth 200 million years ago, suggesting to many that dinosaurs were so successful that they rapidly out-competed their ancestors and drove them extinct. New fossil finds in New Mexico, however, show that this was not true -- dinosaurs and their ancestors lived side by side for 15-20 million years in the Late Triassic before the dinosaur precursors vanished.
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Using nanotubes to detect and repair cracks in aircraft wings, other structures
09-27-2007 · EurekAlert!
Researchers at Rensselaer Polytechnic Institute have developed a simple new technique for identifying and repairing small, potentially dangerous cracks in high-performance aircraft wings and many other structures made from polymer composites. Once a crack is located, engineers can use a simple new method to seal the crack with a 70 percent recovery in strength.
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Planning made easier: MU engineers develop software solution for complex space missions
12-03-2007 · EurekAlert!
Sending an unmanned spacecraft to the outer fringes of the solar system requires extensive planning. At the University of Missouri, engineers have developed an efficient and highly sophisticated mathematical algorithm (implemented as software) that determines the most efficient path for a spacecraft's journey from point A to point B -- no matter how many worlds or years away.
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Bright future for nano-sized light source
06-28-2007 · EurekAlert!
A bio-friendly nano-sized light source capable of emitting coherent light across the visible spectrum has been invented by researchers with the US Department of Energy's Lawrence Berkeley National Laboratory, and the University of California at Berkeley. Among the many potential applications of this nano-sized light source, once the technology is refined, are single cell endoscopy and other forms of subwavelength bio-imaging, integrated circuitry for nanophotonic technology and new advanced methods of cyber cryptography.
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Opposites interfere
07-26-2007 · EurekAlert!
Weizmann Institute scientists have shown that even though two electron particles have come from completely different sources and never interact with each other, the action of one is inextricably tied to the action of the other, proving once again the success of quantum theory.
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Quantum secrets of photosynthesis revealed
04-12-2007 · EurekAlert!
The mystery of how Nature, through photosynthesis, is able to transfer solar energy through molecular systems with nearly 100-percent efficiency appears to have been solved. A study led by researchers with the U.S. Department of Energy's Lawrence Berkeley National Laboratory and the University of California at Berkeley reports that the answer lies in quantum mechanical effects.
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Right counter height can improve fingerprint capture
01-19-2007 · EurekAlert!
Once a tool primarily used by law enforcement, biometric technologies such as fingerprint readers increasingly are being used by governments and private industry for a personal ID that can't easily be forged or stolen. NIST researchers have studied the effect of the work surface height of a fingerprint sensor on the quality and the time required to collect prints.
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Researchers examine carbon capture and storage to combat global warming
06-11-2007 · EurekAlert!
While solar power and hybrid cars have become popular symbols of green technology, Stanford researchers are exploring another path for cutting emissions of carbon dioxide, the leading greenhouse gas that causes global warming.Carbon capture and storage, also called carbon sequestration, traps carbon dioxide after it is produced and injects it underground. The gas never enters the atmosphere. The practice could transform heavy carbon spewers, such as coal power plants, into relatively clean machines with regard to global warming.
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