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Thu, 23 May 2013 18:03:03 EDT
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Atomic-scale investigations solve key puzzle of LED efficiency
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From the high-resolution glow of flat screen televisions to light bulbs that last for years, light-emitting diodes (LEDs) continue to transform technology. The celebrated efficiency and versatility of LEDs -- and other solid-state technologies including laser diodes and solar photovoltaics -- make them increasingly popular. Their full potential, however, remains untapped, in part because the semiconductor alloys that make these devices work continue to puzzle scientists. Scientists have now used electron microscopy imaging techniques to settle a solid-state controversy and raise new experimental possibilities.
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Thu, 23 May 2013 18:03:03 EDT
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Technique to detect breast cancer in urine developed
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Medical researchers have developed a new screening method that uses urinalysis to diagnose breast cancer – and determine its severity – before it could be detected with a mammogram.
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Thu, 23 May 2013 16:23:23 EDT
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Genomic analysis lends insight to prostate cancer
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Researchers have used next generation genomic analysis to determine that some of the more aggressive prostate cancer tumors have similar genetic origins, which may help in predicting cancer progression.
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Thu, 23 May 2013 16:22:22 EDT
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Scientists discover how rapamycin slows cell growth
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University of Montreal researchers have discovered a novel molecular mechanism that can potentially slow the progression of some cancers and other diseases of abnormal growth. In the May 23 edition of the prestigious journal Cell, scientists have explained how they found that the anti-cancer and anti-proliferative drug rapamycin slows down or prevents cells from dividing.
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Thu, 23 May 2013 16:22:22 EDT
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Reforestation study shows trade-offs between water, carbon and timber
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More than 13,000 ships per year transit the Panama Canal each year. Each time a ship passes through, more than 55 million gallons of water are used. The advent of large “super” cargo ships has demanded expansion of the canal, leaving the authority to consider how meet increased demand for water. One proposed measure is the reforestation of the watershed.
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Thu, 23 May 2013 14:37:37 EDT
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Earth's mantle affects long-term sea-level rise estimates
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New findings reveal that the U.S. shoreline -- from Virginia to Florida -- has been uplifted by more than 210 feet, meaning less ice melted than expected. This is big news for scientists who use the coastline to predict future sea-level rise.
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Thu, 23 May 2013 14:37:37 EDT
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Scientists offer first definitive proof of bacteria-feeding behavior in green algae
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Researchers have captured images of green alga consuming bacteria, offering a glimpse at how early organisms dating back more than 1 billion years may have acquired free-living photosynthetic cells. This acquisition is thought to be a critical first step in the evolution of photosynthetic algae and land plants, which, in turn, contributed to the increase in oxygen levels in Earth's atmosphere and ocean and provided one of the conditions necessary for animal evolution.
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Thu, 23 May 2013 14:37:37 EDT
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Ferrets, pigs susceptible to H7N9 avian influenza virus
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Chinese and US scientists have used a virus isolated from a person who died from H7N9 avian influenza infection to determine whether the virus could infect and be transmitted between ferrets. Ferrets are often used as a mammalian model in influenza research, and efficient transmission of influenza virus between ferrets can provide clues as to how well the same process might occur in people.
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Thu, 23 May 2013 14:37:37 EDT
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Cinnamon compound has potential ability to prevent Alzheimer's
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Cinnamon: Can the red-brown spice with the unmistakable fragrance and variety of uses offer an important benefit? The common baking spice might hold the key to delaying the onset of -- or warding off -- the effects of Alzheimer's disease.
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