(Santa Barbara, Calif.) –– By determining simple guidelines, researchers at UC Santa Barbara's Solid State Lighting & Energy Center (SSLEC) have made it possible to optimize phosphors –– a key component in white LED lighting –– allowing for brighter, more efficient lights.
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SYDNEY: An increase in aridity due to global warming will disturb the balance of nutrients in the soil and reduce productivity of the world's drylands, which support millions of people, a landmark study predicts.
The research was conducted by a global collaboration of scientists who carried out the same studies of 224 dryland sites in 16 countries on every continent except Antarctica.
One of the world's largest dinosaurs has been digitally reconstructed by experts from The University of Manchester allowing it to take its first steps in over 94 million years.
The Manchester team, working with scientists in Argentina, were able to laser scan a 40 metre-long skeleton of the vast Cretaceous Agentinosaurus dinosaur. Then using an advanced computer modeling technique involving the equivalent of 30,000 desktop computers they recreated its walking and running movements and testedits locomotion ability tested for the very first time.
An historic tire fire 30 years ago that blazed on for nine months in the northwest Virginia Appalachians, releasing giant plumes of toxic smoke, sparked a recycling revolution and advances in fire-monitoring methods. The fire's environmental legacy is the topic of the cover story in Chemical & Engineering News, the weekly newsmagazine of the American Chemical Society.
New Rochelle, NY, October 30, 2013—The repair of ruptured tendons often requires the use of a graft to bridge gaps between the torn tendon and bone. A tissue-engineered collagen graft can reduce the complications associated with other types of tendon grafts, but it may not be able to support full load bearing until integrated into the surrounding tissue. A new suture technique designed to support this tissue-engineered tendon is described in BioResearch Open Access.
Terahertz waves are invisible, but incredibly useful; they can penetrate many materials which are opaque to visible light and they are perfect for detecting a variety of molecules. Terahertz radiation can be produced using tiny quantum cascade lasers, only a few millimetres wide. This special kind of lasers consists of tailor made semiconductor layers on a nanometer scale.
Whether you want to investigate objects in space, characterize the quality of light sources, optimize photovoltaics modules or analyze chemical compounds, measuring the spectrum of light- or heat sources is often the method of choice. Conventional procedures thereby generate radiation distribution curves which are distorted and have to be subsequently corrected. The Physikalisch-Technische Bundesanstalt (PTB) has now developed a mathematical procedure which yields clearly improved results and can be applied in numerous fields of radiometry and photometry.
Gimball bumps into and ricochets off of obstacles, rather than avoiding them. This 34 centimeter in diameter spherical flying robot buzzes around the most unpredictable, chaotic environments, without the need for fragile detection sensors. This resiliency to injury, inspired by insects, is what sets it apart from other flying robots. Gimball is protected by a spherical, elastic cage which enables it to absorb and rebound from shocks. It keeps its balance using a gyroscopic stabilization system.
Exploratory research on revolutionary new types of nuclear fuel pellets that would be safer in the event of a nuclear disaster has yielded promising results, according to a team of scientists from the University of Tennessee and Oak Ridge National Laboratory.
Americans consume an enormous amount of media daily via television, radio, phone and computer. As you read this article on the Internet, perhaps while checking the text messages on your smartphone or listening to satellite radio, that statement undoubtedly rings true. But exactly how much media flows to individuals and households in a year? Try 6.9 zettabytes — that's 6.9 million MILLION gigabytes.
Crime-scene investigators may soon have a new tool to help them catch evildoers. Researchers have demonstrated the proof-of-principle for a new forensic technique to identify individual fibers of cloth, which often all look alike.
ALBUQUERQUE, N.M. — Gems are known for the beauty of the light that passes through them. But it is the fixed atomic arrangements of these crystals that determine the light frequencies permitted passage.
Now a Sandia-led team has created a plasmonic, or plasma-containing, crystal that is tunable. The effect is achieved by adjusting a voltage applied to the plasma. Because the crystal then is agile in transmitting terahertz light at varying frequencies, it could increase the bandwidth of high-speed communication networks and generally enhance high-speed electronics.
Washington, DC—For the first time, researchers have been able to map the true extent of gold mining in the biologically diverse region of Madre De Dios in the Peruvian Amazon. The team combined field surveys with airborne mapping and high-resolution satellite monitoring to show that the geographic extent of mining has increased 400% from 1999 to 2012 and that the average annual rate of forest loss has tripled since the Great Recession of 2008. Until this study, thousands of small, clandestine mines that have boomed since the economic crisis have gone unmonitored.