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  News From the National Science Foundation
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Showing releases 426-450 out of 742.

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Public Release: 16-Apr-2014
Nature Communications
Scientists achieve first direct observations of excitons in motion
Technique developed at MIT reveals the motion of energy-carrying quasiparticles in solid material.
US Department of Energy, National Science Foundation

Contact: Abby Abazorius
Massachusetts Institute of Technology

Public Release: 16-Apr-2014
Nature Communications
Warm US West, cold East: A 4,000-year pattern
Last winter's curvy jet stream pattern brought mild temperatures to western North America and harsh cold to the East. A University of Utah-led study shows that pattern became more pronounced 4,000 years ago, and suggests it may worsen as Earth's climate warms.
National Science Foundation, National Natural Science Foundation of China, Japan Society for the Promotion of Science, and others

Contact: Lee J. Siegel
University of Utah

Public Release: 15-Apr-2014
Drought hormones measured
Floods and droughts are increasingly in the news, and climate experts say their frequency will only go up in the future. As such, it is crucial for scientists to learn more about how these extreme events affect plants in order to prepare for and combat the risks to food security that could result. New work from Carnegie could help bring about breakthrough findings on that front.
National Science Foundation

Contact: Wolf Frommer
650-325-1521 x208
Carnegie Institution

Public Release: 15-Apr-2014
Biologists develop nanosensors to visualize movements and distribution of plant hormone
Biologists at UC San Diego have succeeded in visualizing the movement within plants of a key hormone responsible for growth and resistance to drought. The achievement will allow researchers to conduct further studies to determine how the hormone helps plants respond to drought and other environmental stresses driven by the continuing increase in the atmosphere's carbon dioxide, or CO2, concentration.
National Institutes of Health, National Science Foundation, Department of Energy

Contact: Kim McDonald
University of California - San Diego

Public Release: 15-Apr-2014
Race and Justice
More should be done for female parolees
As the female prison population grows, a new study funded partly by the National Science Foundation says more should be done to help women probationers and parolees in poor urban areas remain crime-free.
National Science Foundation

Contact: Andy Henion
Michigan State University

Public Release: 15-Apr-2014
International Symposium on Nanoscience and Nanomaterials
Engineers develop new materials for hydrogen storage
Engineers at the University of California, San Diego, have created new ceramic materials that could be used to store hydrogen safely and efficiently. The researchers have created for the first time compounds made from mixtures of calcium hexaboride, strontium and barium hexaboride. They also have demonstrated that the compounds could be manufactured using a simple, low-cost manufacturing method known as combustion synthesis.
National Science Foundation

Contact: Ioana Patringenaru
University of California - San Diego

Public Release: 15-Apr-2014
Journal of Research in Personality
Outgoing behavior makes for happier humans
Happy is as happy does, apparently -- for human beings all over the world. Not only does acting extroverted lead to more positive feelings across several cultures, but people also report more upbeat behavior when they feel free to be themselves.
National Science Foundation

Contact: Timothy Church
Washington State University

Public Release: 15-Apr-2014
Proceedings of the Royal Society B
Lemurs match scent of a friend to sound of her voice
Princeton and Duke scientists report that ring-tailed lemurs respond more strongly to the scents and sounds of female lemurs when the scent they smell and the voice they hear belong to the same female -- even when she's nowhere in sight. Linking a particular female's call with her unique aroma gives the lemurs a way to figure out if she is nearby, since the scents tend to linger.
National Science Foundation, Princeton University

Contact: Robin Ann Smith
Duke University

Public Release: 14-Apr-2014
Journal of American Chemical Society
Penicillin redux: Rearming proven warriors for the 21st century
Drug-resistant bacteria like MRSA are hard to treat because so many antibiotics are ineffective against them. The University of South Carolina's Chuanbing Tang leads a team that has shown a new way to reclaim the power of penicillin and similar drugs against so-called 'superbugs.'
National Science Foundation

Contact: Steven Powell
University of South Carolina

Public Release: 14-Apr-2014
Astrophysical Journal
Cosmic slurp
A 'tidal disruption' occurs when a star orbits too close to a black hole and gets usurped. Researchers at the Georgia Institute of Technology are using NSF XSEDE supercomputers Stampede and Kraken to simulate tidal disruptions to better understand the dynamics of the process. Doing so will help astronomers find many more possible candidates of tidal disruptions in sky surveys and reveal details of how stars and black holes interact.
National Science Foundation

Contact: Faith Singer
University of Texas at Austin, Texas Advanced Computing Center

Public Release: 14-Apr-2014
National Science Review
Piezotronics and piezo-phototronics leading to unprecedented active electronics and optoelectronics
Strain-induced polarization charges in piezoelectric semiconductors can effectively modulate the electronic and optoelectronic processes of charge carriers at the metal-semiconductor interface and p-n junction, which has resulted in both novel fundamental phenomenon and unprecedented device applications. The increasing research interests in the emerging field of piezotronics and piezo-phototronics has opened up opportunities for implementing novel applications such as adaptive human-electronics interfacing, active flexible/stretchable electronics, sensing, energy harvesting, biomedical treatments and optical MEMS.
National Science Foundation, Defense Advanced Research Projects Agency, National Institute of Health

Contact: Zhong Lin Wang
Science China Press

Public Release: 14-Apr-2014
Geophysical Research Letters
Puget Sound's rich waters supplied by deep, turbulent canyon
UW oceanographers made the first detailed measurements of fast-flowing water and intense mixing in a submarine canyon just off the Washington coast.
National Science Foundation, Office of Naval Research

Contact: Hannah Hickey
University of Washington

Public Release: 14-Apr-2014
Applied Physics Letters
Device turns flat surface into spherical antenna
By depositing an array of tiny, metallic, U-shaped structures onto a dielectric material, a team of researchers in China has created a new artificial surface that can bend and focus electromagnetic waves the same way an antenna does.
National Science Foundation of China, 111 Project, National High Tech Projects

Contact: Jason Socrates Bardi
American Institute of Physics

Public Release: 14-Apr-2014
Proceedings of the National Academy of Sciences
Fire and drought may push Amazonian forests beyond tipping point
Future simulations of climate in the Amazon suggest a longer dry season leading to more drought and fires. Woods Hole Research Center scientists and colleagues have published a new study on the impacts of fire and drought on Amazon tree mortality. Their paper titled 'Abrupt increases in Amazonian tree mortality due to drought-fire interactions,' published in the Proceedings of the National Academy of Sciences, found that prolonged droughts caused more intense and widespread wildfires, which consumed more forests in Amazonia than previously understood.
National Science Foundation, Gordon and Betty Moore Foundation, Packard Foundation, NASA, Max Planck Institute

Contact: Eunice Youmans
Woods Hole Research Center

Public Release: 14-Apr-2014
Proceedings of the National Academy of Sciences
Ferns borrowed genes to flourish in low light
During the age of the dinosaurs, the arrival of flowering plants as competitors could have spelled doom for primitive ferns. Instead, ferns diversified and flourished under the new canopy -- using a mysterious gene that helped them adapt to low-light environments. A team led by Duke University scientists has pinpointed the curious origins of this gene and determined that it was transferred to ferns from a group of unassuming, mossy plants called hornworts.
Society of Systematic Biologists, Sigma Xi, American Society of Plant Taxonomists, Duke University, National Science Foundation, European Research Council

Contact: Karl Bates
Duke University

Public Release: 14-Apr-2014
Proceedings of the National Academy of Sciences
Lashing out at your spouse? Check your blood sugar
Lower levels of blood sugar may make married people angrier at their spouses and even more likely to lash out aggressively, new research reveals.
National Science Foundation

Contact: Brad Bushman
Ohio State University

Public Release: 13-Apr-2014
New 'tunable' semiconductors will allow better detectors, solar cells
Researchers have discovered a way to use existing semiconductors to detect a far wider range of light than is now possible, well into the infrared range. The team hopes to use the technology in detectors, obviously, but also in improved solar cells that could absorb infrared light as well as the sun's visible rays.
US Army Research Office, National Science Foundation, Engineering and Physical Sciences Research Council

Contact: Ann Claycombe
Georgia State University

Public Release: 13-Apr-2014
Journal of Heredity
Wolves at the door: Study finds recent wolf-dog hybridization in Caucasus region
Hybridization of wolves with shepherd dogs in the Caucasus region might be more common, and more recent, than previously thought, according to a recently published study in the Journal of Heredity. Scientists found recent hybrid ancestry in about ten percent of the dogs and wolves sampled. About 2 to 3 percent of the sampled wolves and dogs were identified as first-generation hybrids.
Georgian National Science Foundation

Contact: Nancy Steinberg
American Genetic Association

Public Release: 13-Apr-2014
Nature Materials
Tiny particles could help verify goods
Chemical engineers at MIT hope smartphone-readable microparticles could crack down on counterfeiting.
US Air Force, Director of Defense Research and Engineering, Singapore-MIT Alliance for Research and Technology, National Science Foundation, US Army Research Office, National Institutes of Health

Contact: Sarah McDonnell
Massachusetts Institute of Technology

Public Release: 13-Apr-2014
Nature Materials
Glasses strong as steel: A fast way to find the best
Scientists at Yale have devised a dramatically faster way of identifying and characterizing complex alloys known as bulk metallic glasses, a versatile type of pliable glass that's stronger than steel.
National Science Foundation, US Department of Energy

Contact: Eric Gershon
Yale University

Public Release: 11-Apr-2014
Proceedings of the National Academy of Sciences
Greenland ice cores show industrial record of acid rain, success of US Clean Air Act
Detailed ice core measurements show smog-related ratios leveling off in 1970, and suggests these deposits are sensitive to the same chemicals that cause acid rain.
National Science Foundation

Contact: Hannah Hickey
University of Washington

Public Release: 10-Apr-2014
Study resolves controversy over nitrogen's ocean 'exit strategies'
A decades-long debate over the dominant way that nitrogen is removed from the ocean may now be settled. Researchers found that both of the nitrogen 'exit strategies,' denitrification and anammox, are at work in the oceans.
National Science Foundation

Contact: Catherine Zandonella
Princeton University

Public Release: 10-Apr-2014
Proceedings of the National Academy of Sciences
Antennae help flies 'cruise' in gusty winds
Caltech researchers combined bursts of air, digital video cameras, and a variety of software and sensors to explain a mechanism for a fruit fly's 'cruise control' in flight -- revealing a relationship between a fly's vision and its wind-sensing antennae.
US Army Research Office, National Science Foundation

Contact: Deborah Williams-Hedges
California Institute of Technology

Public Release: 10-Apr-2014
Current Biology
World ranking tracks evoluntionary distinctness of birds
A team of international scientists, including a trio from Simon Fraser University, has published the world's first ranking of evolutionary distinct birds under threat of extinction. These include a cave-dwelling bird that is so oily it can be used as a lamp and a bird that has claws on its wings and a stomach like a cow.
Natural Sciences and Engineering Research Council of Canada, Natural Environment Research Council, National Science Foundation, NASA, Yale Institute for Biospheric Studies

Contact: Arne Mooers
Simon Fraser University

Public Release: 10-Apr-2014
Current Biology
Four-eyed daddy longlegs fossil fills in evolutionary tree
Living harvestmen -- a group of arachnids more commonly known as daddy longlegs -- have a single pair of eyes that help them navigate every continent except Antarctica. But a newly described 305-million-year-old fossil shows that wasn't always the case. Research led by scientists at the American Museum of Natural History and the University of Manchester indicates that primitive harvestmen had two pairs of eyes, adding significant details to the evolutionary story of this highly successful group.
National Science Foundation

Contact: Kendra Snyder
American Museum of Natural History

Showing releases 426-450 out of 742.

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