The EDGE: ScienceDaily Technology Headlines -- for Tuesday, February 28, 2012

ScienceDaily Technology Headlines

for Tuesday, February 28, 2012

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Ultra-fast outflows help monster black holes shape their galaxies (February 27, 2012) -- A curious correlation between the mass of a galaxy's central black hole and the velocity of stars in a vast, roughly spherical structure known as its bulge has puzzled astronomers for years. Astronomers have now identified a new type of black-hole-driven outflow that appears to be both powerful enough and common enough to explain this link. ... > full story

Solving a spintronic mystery: Researchers resolve controversy over gallium manganese arsenide that could boost spintronic performance (February 27, 2012) -- Scientists appear to have resolved a long-standing controversy regarding the semiconductor gallium manganese arsenide, one of the most promising materials for spintronic technology. They've determined the source of the ferromagnetic properties that make gallium manganese arsenide such a hot commodity for the smaller, faster and much cheaper data storage and processing of spintronic devices. ... > full story

Video games depict religion as violent, problematized, study shows (February 27, 2012) -- Many newer-generation video games equate religion with violence in the game narratives, new research shows. ... > full story

Record-speed wireless data bridge demonstrated: Takes high-speed communications the 'last mile' (February 27, 2012) -- Scientists have created a new way to overcome many of the issues associated with bringing high-speed digital communications across challenging terrain and into remote areas, commonly referred to as the "last mile" problem. The researchers developed a record-speed wireless data bridge that transmits digital information much faster than today's state-of-the-art systems. ... > full story

Dwarf galaxy questions current galaxy formation models (February 27, 2012) -- Researcher observed the dwarf galaxy I Zw 18, and found that much of what is known about galaxy formation and evolution might need substantial revision. ... > full story

Reduction in U.S. carbon emissions attributed to cheaper natural gas (February 27, 2012) -- Lower emission from power plants in 2009 was driven by competitive pricing of natural gas versus coal, researchers say. ... > full story

60-year-old definition of surface tension on solids revised (February 27, 2012) -- Researchers have shown that surface tension on a solid material is unconnected to the energy required to create a new surface. Consequently, surface tension on a solid does not exist in its conventional meaning. ... > full story

RNA interference cancer treatment? Delivering RNA with tiny sponge-like spheres (February 27, 2012) -- For the past decade, scientists have been pursuing cancer treatments based on RNA interference -- a phenomenon that offers a way to shut off malfunctioning genes with short snippets of RNA. However, one huge challenge remains: finding a way to efficiently deliver the RNA. Scientists have now come up with a novel delivery vehicle in which RNA is packed into microspheres so dense that they withstand degradation until they reach their destinations. The new system knocks down expression of specific genes as effectively as existing delivery methods, but with a much smaller dose of particles. ... > full story

Quantum microphone captures extremely weak sound (February 27, 2012) -- Scientists have demonstrated a new kind of detector for sound at the level of quietness of quantum mechanics. The result offers prospects of a new class of quantum hybrid circuits that mix acoustic elements with electrical ones, and may help illuminate new phenomena of quantum physics. ... > full story

Finding explosives with laser beams: New method detects chemicals -- even if enclosed in containers -- over long distances (February 27, 2012) -- People like to keep a safe distance from explosive substances, but in order to analyze them, close contact is usually inevitable. A new method has now been developed to detect chemicals inside a container over a distance of more than a hundred meters. Laser light is scattered in a very specific way by different substances. Using this light, the contents of a nontransparent container can be analyzed without opening it. ... > full story

Squeezing what hasn't been squeezed before: Another victory over uncertainty in quantum physics measurements (February 26, 2012) -- Uncertainty affects the accuracy with which measurements can be made in quantum physics. To reduce this uncertainty, physicists have learned to "squeeze" certain measurements. Researchers are now reporting a new type of measurement that can be squeezed to improve precision. ... > full story

Diagnostic tool: Polymer film loaded with antibodies can capture tumor cells (February 24, 2012) -- The development of polymer film loaded with antibodies that can capture tumor cells shows promise as a diagnostic tool. Cancer cells that break free from a tumor and circulate through the bloodstream spread cancer to other parts of the body. But this process, called metastasis, is extremely difficult to monitor because the circulating tumor cells (CTCs) can account for as few as one in every billion blood cells. ... > full story

The Many Moods of Titan (February 24, 2012) -- A set of recent papers, many of which draw on data from NASA's Cassini spacecraft, reveal new details in the emerging picture of how Saturn's moon Titan shifts with the seasons and even throughout the day. The papers show how this largest moon of Saturn is a cousin -- though a very peculiar cousin -- of Earth. ... > full story

Erosional origin of linear dunes on Earth and Saturn's moon Titan (February 24, 2012) -- Linear dunes, widespread on Earth and Saturn's moon, Titan, are generally considered to have been formed by deposits of windblown sand. It has been speculated for some time that some linear dunes may have formed by "wind-rift" erosion, but this model has commonly been rejected due to lack of sufficient evidence. Now, new research indicates that erosional origin models should not be ruled out. ... > full story

Light-emitting nanocrystal diodes go ultraviolet (February 24, 2012) -- Scientists have developed a process for creating glass-based, inorganic light-emitting diodes that produce light in the ultraviolet range. The work is a step toward biomedical devices with active components made from nanostructured systems. ... > full story

Neither birth nor death stops a flock, new theory shows (February 24, 2012) -- Neither births nor deaths stop the flocking of organisms. They just keep moving, says a theoretical physicist. The notion, he says, has implications in biology and eventually could point to new cancer therapies. ... > full story

Liquid water diffusion at molecular level (February 24, 2012) -- Researchers have described for the first time the diffusion of liquid water through nanochannels in molecular terms; nanochannels are extremely tiny channels with a diameter of 1-100 nanometers that scientists use to study the behavior of molecules. This study might have an important impact on water desalinization and filtration methods. The introduction of graphene membranes and carbon nanolayers will revolutionize water desalinization and filtration processes, as water diffuses rapidly through these materials when their pores are 1nm in diameter. ... > full story

Robot obeys to commands and gestures (February 24, 2012) -- A robot helping in the household no longer is a dream of the future. ARMAR, the humanoid robot, can understand commands and execute them independently. For instance, it gets the milk out of the fridge. Thanks to cameras and sensors, it orients itself in the room, recognizes objects, and grasps them with the necessary sensitivity. Additionally, it reacts to gestures and learns by watching a human colleague how to empty a dishwasher or clean the counter. Thus, it adapts naturally to our environment. ... > full story

Novel method to make nanomaterials discovered (February 24, 2012) -- Researchers have discovered a novel way to make nanomaterials. Using computer simulations, the researchers have been able to predict that long and narrow graphene nanoribbons can be rolled into carbon nanotubes by means of twisting. ... > full story

Wireless bicycle brake, a prototype on an exciting mission (February 24, 2012) -- At this time, wireless networks are able to brake just one bike, but in the future, the technical elements will be further developed to regulate entire trains as they travel over the lines. In view of this, computer scientists are designing mathematical calculations to check such systems automatically. ... > full story

Metal nanoparticles shine with customizable color (February 23, 2012) -- Engineers have demonstrated a new kind of tunable color filter that uses optical nanoantennas to obtain precise control of color output. ... > full story

Engineers create a rainbow-colored polymer that could open the door to portable, handheld multispectral imaging devices (February 23, 2012) -- Engineers have developed a one-step, low-cost method to fabricate a polymer that is rainbow-colored, reflecting many different wavelengths of light when viewed from a single perspective. The colors won't fade with time because they are produced by surface geometry, and not pigment -- the same principle that gives color to the wings of butterflies and feather of peacocks. ... > full story

Replacing electricity with light: First physical 'metatronic' circuit created (February 23, 2012) -- The technological world of the 21st century owes a tremendous amount to advances in electrical engineering, specifically, the ability to finely control the flow of electrical charges using increasingly small and complicated circuits. And while those electrical advances continue to race ahead, researchers are pushing circuitry forward in a different way, by replacing electricity with light. ... > full story

More powerful electric cars: Mechanism behind capacitor's high-speed energy storage discovered (February 23, 2012) -- Researchers have discovered the means by which a polymer known as PVDF enables capacitors to store and release large amounts of energy quickly. Their findings could lead to much more powerful and efficient electric cars. ... > full story

Nanoscale magnetic resonance imaging, quantum computer get nudge from new research (February 23, 2012) -- Magnetic resonance imaging (MRI) on the nanoscale and the ever-elusive quantum computer are among the advancements edging closer toward the realm of possibility, and a new study may give both an extra nudge. ... > full story

Aircraft of the future could capture and re-use some of their own power (February 23, 2012) -- Tomorrow's aircraft could contribute to their power needs by harnessing energy from the wheel rotation of their landing gear to generate electricity. They could use this to power their taxiing to and from airport buildings, reducing the need to use their jet engines. This would save on aviation fuel, cut emissions and reduce noise pollution at airports. ... > full story

Less is more: Study of tiny droplets could have big impact on industrial applications (February 23, 2012) -- Researchers have discovered rules that govern how liquid spreads along flexible fibers and have found that when it comes to the size of liquid droplets, sometimes less is more. ... > full story

Investigation links deaths to paint-stripping chemical (February 23, 2012) -- The deaths of at least 13 workers who were refinishing bathtubs have been linked to a chemical used in products to strip surfaces of paint and other finishes. An investigation started by researchers in 2011 has found that 13 deaths since 2000 involved the use of paint-stripping products containing methylene chloride, a toxic chemical widely used as a de-greaser and paint stripper. ... > full story

Girls' verbal skills make them better at arithmetic, study finds (February 23, 2012) -- While boys generally do better than girls in science and math, some studies have found that girls do better in arithmetic. A new study finds that the advantage comes from girls' superior verbal skills. ... > full story

Chemical clues on formation of planetary systems: Earth 'siblings' can be different (February 23, 2012) -- Astronomers have discovered that the chemical structure of Earth-like planets can be very different from the bulk composition of Earth. This may have a dramatic effect on the existence and formation of the biospheres and life on Earth-like planets. ... > full story

Impulsive kids play more video games, and kids who play more video games may become more impulsive (February 23, 2012) -- Impulsive children with attention problems tend to play more video games, while kids in general who spend lots of time video gaming may also develop impulsiveness and attention difficulties, according to new research. ... > full story

Making droplets drop faster: New nanopatterned surfaces could improve the efficiency of powerplants and desalination systems (February 23, 2012) -- New research offers important new insights into how water droplets form, and ways to pattern the collecting surfaces at the nanoscale to encourage droplets to form more rapidly. These insights could enable a new generation of significantly more efficient power plants and desalination plants, the researchers say. ... > full story

First ultraluminous source in Andromeda galaxy unmasked as 'normal' stellar mass black hole (February 23, 2012) -- Detailed observations show that the first ultraluminous X-ray source detected in our neighboring Andromeda galaxy is due to a stellar mass black hole swallowing material at very high rates. The emission of the ultraluminous source probably originates from a system similar to X-ray binaries in our galaxy with matter accreting onto a black hole, which is at least 13 times more massive than our Sun. Unlike X-ray binaries in our own Milky Way, however, this source is much less obscured by interstellar gas and dust, allowing detailed investigations also at low X-ray energies. ... > full story

OPERA experiment reports anomaly in flight time of neutrinos from CERN to Gran Sasso (February 23, 2012) -- The OPERA collaboration has informed its funding agencies and host laboratories that it has identified two possible effects that could have an influence on its neutrino timing measurement. These both require further tests with a short pulsed beam. If confirmed, one would increase the size of the measured effect, the other would diminish it. ... > full story

Oil sands pollution comparable to a large power plant (February 22, 2012) -- In the first look at the overall effect of air pollution from the excavation of oil sands, also called tar sands, in Alberta, Canada, scientists used satellites to measure nitrogen dioxide and sulfur dioxide emitted from the industry. ... > full story

Controlling protein function with nanotechnology (February 22, 2012) -- A new study is providing important details on how proteins in our bodies interact with nanomaterials. Researchers have developed a new tool to determine the orientation of proteins on different nanostructures. The discovery is a key step in the effort to control the orientation, structure, and function of proteins in the body using nanomaterials. ... > full story

Low levels of fallout from Fukushima, U.S. study finds (February 22, 2012) -- Fallout from the 2011 Fukushima Dai-ichi nuclear power facility in Japan was measured in minimal amounts in precipitation in the United States in about 20 percent of 167 sites sampled in a nationwide U.S. study. ... > full story

Faster way to catch cells: New microfluidic device could be used to diagnose and monitor cancer and other diseases (February 22, 2012) -- Separating complex mixtures of cells, such as those found in a blood sample, can offer valuable information for diagnosing and treating disease. However, it may be necessary to search through billions of other cells to collect rare cells such as tumor cells, stem cells or fetal cells. Researchers have now demonstrated a new microfluidic device that can isolate target cells much faster than existing devices. Such technology could be used in applications such as point-of-care diagnostics and personalized medicine. ... > full story

'Miracle material' graphene is thinnest known anti-corrosion coating (February 22, 2012) -- New research has established the "miracle material" called graphene as the world's thinnest known coating for protecting metals against corrosion. ... > full story

Disappearing and reappearing superconductivity surprises scientists (February 22, 2012) -- Superconductivity is a rare physical state in which matter is able to conduct electricity -- maintain a flow of electrons -- without any resistance. This phenomenon can only be found in certain materials at low temperatures, or can be induced under chemical and high external pressure conditions. Research to create superconductors at higher temperatures has been ongoing for two decades with the promise of significant impact on electrical transmission. New work demonstrates unexpected superconductivity in a type of compounds called iron selenium chalcogenides. ... > full story

World of Warcraft boosts cognitive functioning in older adults (February 22, 2012) -- For some older adults, the online video game World of Warcraft (WoW) may provide more than an opportunity for escapist adventure. Researchers have found that playing WoW boosted cognitive functioning for older adults – particularly those who had scored poorly on cognitive ability tests before playing the game. ... > full story

NASA's Spitzer finds solid buckyballs in space (February 22, 2012) -- Astronomers using data from NASA's Spitzer Space Telescope have, for the first time, discovered buckyballs in a solid form in space. Prior to this discovery, the microscopic carbon spheres had been found only in gas form in the cosmos. ... > full story

Tiny, implantable medical device can propel itself through bloodstream (February 22, 2012) -- For 50 years, scientists had searched for the secret to making tiny implantable devices that could travel through the bloodstream. Engineers have now demonstrated a wirelessly powered device that just may make the dream a reality. ... > full story

New twist on nanowires: Technology can control composition and structure of these tiny wires as they grow (February 22, 2012) -- Nanowires -- microscopic fibers that can be "grown" in the lab -- are a hot research topic today, with a variety of potential applications including light-emitting diodes and sensors. Now, researchers has found a way of precisely controlling the width and composition of these tiny strands as they grow, making it possible to grow complex structures that are optimally designed for particular applications. ... > full story

Observing single atoms during relaxation toward equilibrium (February 22, 2012) -- Scientists have succeeded for the first time in simulating the dynamic behavior of strongly correlated individual atoms in solids. They were able to string atoms in so-called optical lattices and observe their dynamic behavior, which is determined by complex interactions with other atoms. ... > full story

Off switch for pain? Chemists build light-controlled neural inhibitor (February 22, 2012) -- Pain? Just turn it off! It may sound like science fiction, but researchers have now succeeded in inhibiting pain-sensitive neurons on demand, in the laboratory. The crucial element in their strategy is a chemical sensor that acts as a light-sensitive switch. ... > full story

Fake drug sales are increasing on the Internet and turning up in legitimate supply chains, review finds (February 22, 2012) -- Criminal gangs are increasingly using the internet to market life-threatening counterfeit medicines and some have even turned up in legitimate outlets such as pharmacies, according to a newly published review. ... > full story

Recharge your cell phone with a touch? New nanotechnology converts body heat into power (February 22, 2012) -- Never get stranded with a dead cell phone again. A promising new technology called Power Felt, a thermoelectric device that converts body heat into an electrical current, soon could create enough juice to make another call simply by touching it. ... > full story