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83,156 articles from ScienceDaily
- title
- ScienceDaily
- tags
- description
- Daily headlines about discoveries in the physical and life sciences, health and medicine, the environment, and technology, from the world's leading universities and research centers.
- last updated
- May 23, 2013 (22:23)
- homepage
- http://www.sciencedaily.com
- feed url
- http://www.sciencedaily.com/newsfeed.xml
- date added
- September 3, 2007 (19:52)
- meta
- alexa, technorati, rojo
-
THURSDAY 23. MAY, 2013
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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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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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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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Even while being dragged to its destruction inside a cell, a cancer-promoting growth factor receptor fires away, sending signals that thwart the development of tumor-suppressing microRNAs before it's dissolved, researchers have reported.
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For the first time, biophysicists have measured the molecular force required to mechanically transmit function-regulating signals within a cell. A new laboratory method, named the tension gauge tether approach, has made it possible to detect and measure the mechanics of the single-molecule interaction by which human cell receptors are activated.
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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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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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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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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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Physicists have developed a quantum simulator that allows arranging atoms in a way that they mimic the behavior of electrons in magnetic materials. The experiment opens up the possibility of systematically studying poorly understood properties of novel materials. The fresh insights might lead to designs for new magnetic materials.
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An anti-cancer drug reverses memory deficits in an Alzheimer's disease mouse model, new research shows. The article reviewed previously published findings on the drug bexarotene, approved by the US Food and Drug Administration for use in cutaneous T cell lymphoma.
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A billon-frames-per-second film has captured the vibrations of gold nanocrystals in stunning detail for the first time.
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Scientists report they have discovered in mouse studies that a small molecule released in the spinal cord triggers a process that is later experienced in the brain as the sensation of itch.
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Nearly two-thirds of patients with high-risk neuroblastoma -- a common tumor that forms in the nerve cells of children -- cannot be cured using tumor-killing cancer drugs. A new study reveals a new genomic approach to screen for compounds that inhibit tumor growth by causing cancer cells to differentiate. Using this screening method, the researchers identified a compound that causes neuroblastoma cells to differentiate, uncovering promising new treatment strategies.
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Plants have evolved unique and sophisticated immune systems to defend themselves against insects and pathogens. Plant hormones called jasmonates play an important role in this defense, but jasmonates have been found to also be important for plant growth. Now, researchers have discovered a gene in the jasmonate pathway that controls plant defenses but does not play a detectable role in plant development. These findings could be applied to improve crop resistance in agriculture.
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White tigers today are only seen in zoos, but they belong in nature, say researchers reporting new evidence about what makes those tigers white. Their spectacular white coats are produced by a single change in a known pigment gene, according to a new study.
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A brief visual task can predict IQ, according to a new study. This surprisingly simple exercise measures the brain’s unconscious ability to filter out visual movement. The study shows that individuals whose brains are better at suppressing background motion perform better on standard measures of intelligence.
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Astronomers have resolved a major problem in their understanding of a class of stars that undergo regular outbursts by accurately measuring the distance to a famous example of the type.
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Teams of highly respected Alzheimer’s researchers failed to replicate what appeared to be breakthrough results for the treatment of this brain disease when they were published last year in the journal Science.
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Sugar isn't always sweet to German cockroaches. In a new study, researchers show that glucose sets off bitter receptors in roach taste buds, causing roaches to avoid foods that bring on this taste-bud reaction.
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Researchers have grown high-quality crystals of molybdenum disulfide, the world's thinnest semiconductor, and studied how these crystals stitch together at the atomic scale to form continuous sheets, gaining key insights into the optical and electronic properties of this new "wonder" material.
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NASA Dryden Flight Research Center's F-15B Research Testbed aircraft has been busy this spring, flying an experimental test fixture in partnership with Aerion Corporation of Reno, Nevada.
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The Ring Nebula's distinctive shape makes it a popular illustration for astronomy books. But new observations by NASA's Hubble Space Telescope of the glowing gas shroud around an old, dying, sun-like star reveal a new twist.
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Magnetars -- the dense remains of dead stars that erupt sporadically with bursts of high-energy radiation -- are some of the most extreme objects known in the Universe. A major campaign using NASA's Chandra X-ray Observatory and several other satellites shows magnetars may be more diverse -- and common -- than previously thought.
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Medics have succeeded in treating cerebral palsy with autologous cord blood. Following a cardiac arrest with severe brain damage, a two-and-a-half year old boy had been in a persistent vegetative state -- with minimal chances of survival. Just two months after treatment with the cord blood containing stem cells, the symptoms improved significantly; over the following months, the child learned to speak simple sentences and to move.
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