ScienceDaily Technology Headlines
for Tuesday, January 11, 2011
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Cassini to probe icy moon Rhea for clues to Saturn rings (January 11, 2011) -- Saturn's icy moon Rhea might seem a strange place to look for clues to understanding the vast majestic rings encircling Saturn. But that's what NASA's Cassini spacecraft plans to do on its next flyby of Rhea. ... > full story
Energy limits global economic growth, study finds (January 11, 2011) -- A new study establishes macroecological correlations across countries and over time between per capita gross domestic product and per capita energy use. The authors infer a causal linkage. Correlations between these same two measures and measures of lifestyle quality lead the authors to believe that energy production would have to increase several-fold to support a still-growing world population in the current US lifestyle. ... > full story
Couch potatoes beware: Too much time spent watching TV is harmful to heart health (January 11, 2011) -- Spending too much leisure time in front of a TV or computer screen appears to dramatically increase the risk for heart disease and premature death from any cause, perhaps regardless of how much exercise one gets, according to a new study. ... > full story
IPv6 guide provides path to secure deployment of next-generation Internet protocol (January 11, 2011) -- As the day draws nearer for the world to run out of the unique addresses that allow us to use the Internet, researchers have issued a guide for managers, network engineers, transition teams and others to help them deploy the next generation Internet protocol (IPv6) securely. ... > full story
VISTA stares deeply into the blue lagoon (January 10, 2011) -- A new infrared image of the Lagoon Nebula was captured as part of a five-year study of the Milky Way using the European Southern Observatory's VISTA telescope at the Paranal Observatory in Chile. This is a small piece of a much larger image of the region surrounding the nebula, which is, in turn, only one part of a huge survey. ... > full story
With proper planning, selective rather than mass vaccination can reduce spread of flu, say physicists (January 10, 2011) -- During outbreaks of the flu, hospitals often reporting overcrowding, and doctors advise people who have not yet been vaccinated against flu to get their shots. Surprisingly, however, three physicists have developed an unconventional, theoretical strategy for intensive but limited vaccination against infectious diseases (such as flu) that would replace the practice of mass inoculation over a prolonged period. The physicists developed their theory using a technique borrowed from quantum mechanics. ... > full story
Researchers developing bio-based polymers that heal cracks (January 10, 2011) -- Researchers are developing biorenewable polymers capable of healing themselves as they degrade and crack. The self-healing properties can increase material lifetimes and reduce maintenance. There are challenges, but researchers think there's potential to develop new and effective materials. ... > full story
Spinning the unspinnable: Superconducting, energy storing and catalytic yarns based on ancient types of spirals (January 10, 2011) -- Researchers found that by twisting nanotube sheets into various spirals, they absorb greater concentrations of embedded materials, while preserving the flexibility and strength of nanotube fibers. ... > full story
Surprising flares in crab nebula (January 10, 2011) -- Astronomers have recently detected two short-duration gamma-ray pulses coming from the Crab Nebula, which was previously believed to emit radiation at very steady rate. The pulses were fueled by the most energetic particles ever traced to a discrete astronomical object. ... > full story
From dusty punch cards, new insights into link between cholesterol and heart disease (January 10, 2011) -- A stack of punch cards from a landmark study published in 1966, and the legwork to track down the study's participants years later, has yielded the longest analysis of the effects of lipoproteins on coronary heart disease. The study tracked almost 1,900 people over a 29-year period, which is nearly three times longer than other studies that examine the link between different sizes of high-density lipoprotein particles and heart disease. ... > full story
Dwarf galaxy harbors supermassive black hole (January 10, 2011) -- The discovery of a relatively nearby dwarf galaxy with a supermassive black hole shows astronomers what young galaxies in the very early Universe probably were like. It also greatly strengthens the case for such supermassive black holes forming before the galaxies built up to full size. ... > full story
Extracting cellular 'engines' may aid in understanding mitochondrial diseases (January 10, 2011) -- Medical researchers who crave a means of exploring the genetic culprits behind a host of neuromuscular disorders may have just had their wish granted by a research team that has performed surgery on single cells to extract and examine their mitochondria. ... > full story
Biofuel grasslands better for birds than ethanol staple corn, researchers find (January 10, 2011) -- Developing biofuel from native perennials instead of corn in the Midwest's rolling grasslands would better protect threatened bird populations, research suggests. Federal mandates and market forces both are expected to promote rising biofuel production, but the environmental consequences of turning more acreage over to row crops for fuel are a serious concern. ... > full story
The 'mad' Egyptian scholar who proved Aristotle wrong (January 10, 2011) -- Ibn al-Haytham's 11th-century Book of Optics, which was published exactly 1000 years ago, is often cited alongside Newton's Principia as one of the most influential books in physics. Yet very little is known about the writer, considered by many to be the father of modern optics. ... > full story
Origin of life on Earth: 'Natural' asymmetry of biological molecules may have come from space (January 7, 2011) -- Certain molecules do exist in two forms which are symmetrical mirror images of each other: they are known as chiral molecules. On Earth, the chiral molecules of life, especially amino acids and sugars, exist in only one form, either left-handed or right-handed. Why is it that life has initially chosen one form over the other? Now researchers have for the first time obtained an excess of left-handed molecules (and then an excess of right-handedones) under conditions that reproduce those found in interstellar space. This result therefore supports the hypothesis that the asymmetry of biological molecules on Earth has a cosmic origin. The researchers also suggest that the solar nebula formed in a region of massive stars. ... > full story
Packaging that knows when food is going bad (January 7, 2011) -- Packaging that alerts consumers to food which is starting to go bad is being developed by researchers in the UK. ... > full story
Scientists construct synthetic proteins that sustain life (January 7, 2011) -- In a groundbreaking achievement that could help scientists "build" new biological systems, Princeton University scientists have constructed for the first time artificial proteins that enable the growth of living cells. ... > full story
Andromeda’s once and future stars (January 7, 2011) -- Two European Space Agency observatories have combined forces to show the Andromeda Galaxy in a new light. Herschel sees rings of star formation in this, the most detailed image of the Andromeda Galaxy ever taken at infrared wavelengths, and XMM-Newton shows dying stars shining X-rays into space. ... > full story
Health chip gives instant diagnoses (January 7, 2011) -- Soon, your family doctor will no longer have to send blood or cancer cell samples to the laboratory. A little chip will give her test results on the spot. ... > full story
Regional dialects are alive and well on Twitter: Slang terms like y'all, yinz, koo, coo and suttin predict location of tweet authors (January 7, 2011) -- Microbloggers may think they're interacting in one big Twitterverse, but computer science researchers find that regional slang and dialects are as evident in tweets as they are in everyday conversations. ... > full story
Sulfur proves important in the formation of gold mines (January 7, 2011) -- Collaborating with an international research team, an economic geologist has discovered how gold-rich magma is produced, unveiling an all-important step in the formation of gold mines. Robert Linnen found sulfur enhances gold's solubility, and solubility is an important step in forming a gold deposit. The study could lead to a breakthrough in choosing geographic targets for gold exploration. ... > full story
Longstanding mystery of Sun's hot outer atmosphere solved (January 7, 2011) -- One of the most enduring mysteries in solar physics is why the Sun's outer atmosphere, or corona, is millions of degrees hotter than its surface. Now scientists believe they have discovered a major source of hot gas that replenishes the corona: jets of plasma shooting up from just above the Sun's surface. ... > full story
Solar research instrument 'fills the gap,' views sun's innermost corona (January 7, 2011) -- During a total eclipse of the sun, skywatchers are awed by the shimmering corona -- a faint glow that surrounds the sun like gossamer flower petals. The corona becomes visible only when the sun is blocked, which happens for just a few minutes during an eclipse. Now, an instrument on board NASA's Solar Dynamics Observatory is giving unprecedented views of the innermost corona 24 hours a day, seven days a week. ... > full story
Digital reminiscence systems: Life-logging assists dementia sufferers, research finds (January 7, 2011) -- Digital reminiscence systems could improve quality of life for people with mild dementia, according to new research. Dementia is on the increase, but for the sake of the quality of life of sufferers and their family and friends finding ways to allow the patient to remain in their own home and to live independently is an issue that must be addressed. At the same time, enabling independent living could also reduce the economic burden. ... > full story
Carbon swap bank to beat climate change, Australian researchers propose (January 6, 2011) -- Australian researchers have suggested that nations should abandon the concept of carbon emissions trading in favor of a carbon swap bank that might lead to genuine reductions in the amount of carbon dioxide greenhouse gas entering the atmosphere and so provide a mechanism for reducing climate change. ... > full story
Is your convertible damaging your hearing? (January 6, 2011) -- Driving convertible cars with the top open at speeds exceeding 88.5 kilometres per hour (55 miles per hour) may put drivers at increased risk of noise-induced hearing loss, according to new research. ... > full story
Major advance in MRI allows much faster brain scans (January 6, 2011) -- Physicists and physicians have combined two new MRI techniques to reduce the time for a brain scan by a factor of 7 to 10. Faster functional and diffusion MRI scans will boost the national effort to map the brain's wiring, called the Human Connectome Project. ... > full story
Telescope calibration may help explain mystery of universe's expansion (January 6, 2011) -- Is the expansion of the universe accelerating for some unknown reason? A telescope newly calibrated by scientists can be more certain of one day obtaining an accurate answer. ... > full story
Functionally graded shape memory polymers developed (January 6, 2011) -- Scientists have succeeded in applying the concept of functionally graded materials to shape memory polymers. ... > full story
Newly developed cloak hides underwater objects from sonar (January 6, 2011) -- Researchers have demonstrated an acoustic cloak, a technology that renders underwater objects invisible to sonar and other ultrasound waves. They have developed a working prototype, metamaterial capable of hiding an object from a broad range of sound waves. Sixteen layers of specially structured acoustic circuits bend sound waves to wrap them around the outer layers of the cloak. ... > full story
How to soften a diamond (January 6, 2011) -- After hundreds of years, researchers have managed to decode the atomic mechanism behind diamond grinding. ... > full story
How studded winter tires may damage public health, as well as pavement (January 6, 2011) -- Scientists are reporting new evidence on how studded tires -- wintertime fixtures in some areas but banned in others for causing damage to pavement -- may also damage the health of motorists and people living near highways. Studded tires have small metal protrusions from the rubber tread that improve traction on icy or snow-covered roads. ... > full story
Is the hornet our key to renewable energy? Physicist discovers that hornet's outer shell can harvest solar power (January 6, 2011) -- The brown and yellow parts of the Oriental hornet's body are able to harvest solar energy, and if that function can be mimicked, a novel way of achieving high-efficiency solar energy collection might be just around the corner, says a physicist who has demonstrated that the brown and yellow stripes on the insect's abdomen can absorb the sun's radiation, and the yellow pigment transforms that radiation into electric power. ... > full story
New method for making large quantities of deuterium-depleted drinking water (January 6, 2011) -- Scientists in China are reporting development of a less expensive, more eco-friendly method for making deuterium-depleted drinking water, citing studies suggesting that it may be a more healthful form of water. ... > full story
Identity parade clears cosmic collisions of the suspicion of promoting black hole growth (January 6, 2011) -- What happens when galaxies crash together? For years, these cosmic collisions have been blamed for triggering violent outbursts at the hearts of galaxies. Now, a remarkable piece of detective work has given a verdict: galactic mergers do not usually whet the appetite of the black holes that power these active galactic nuclei -- meaning other, less dramatic phenomena are responsible. ... > full story
Helicopter transport increases survival for seriously injured patients, study finds (January 6, 2011) -- Severely injured patients transported by helicopter from the scene of an accident are more likely to survive than patients brought to trauma centers by ground ambulance, according to a new study. The study is the first to examine the role of helicopter transport on a national level and includes the largest number of helicopter-transport patients in a single analysis. ... > full story
Films for façades: New building material offers new design options (January 6, 2011) -- The plastic film ETFE is experiencing a boom these days because it gives architects completely new design options. You can use this material not only for futuristic sports stadiums, but also to insulate and for the heating control of buildings. ... > full story
Web-based curriculum improves surgical residents' knowledge of health care business (January 6, 2011) -- According to new study, surgery residents improved their knowledge of health care business concepts and principles with the use of a Web-based curriculum. ... > full story
Drinking recycled water? Study establishes methods to assess recycled aquifer water (January 6, 2011) -- The Australian Government National Water Commission funded a study to establish an approach to assess the quality of water treated using managed aquifer recharge. Researchers at Australia's CSIRO Land and Water set out to determine if the en product would meet standard drinking water guidelines. ... > full story
Diamond detectors provide a glimpse into artificial suns (January 5, 2011) -- Unique Cherenkov detectors for measurements of electron beams in thermonuclear installations of the tokamak type are being developed. Tests conducted this year revealed that the device might be useful for investigating the extreme physical conditions inside the largest present-day installations, which will form the basis of future fusion energy reactors, commonly known as artificial suns. ... > full story
Recycled Haitian concrete can be safe, strong and less expensive, researchers say (January 5, 2011) -- Nearly one year after a 7.0-magnitude earthquake rocked the Republic of Haiti, engineering and concrete experts report that concrete and other debris in Port-au-Prince could be safely and inexpensively recycled into strong new construction material. ... > full story
'Nanoscoops' could spark new generation of electric automobile batteries (January 5, 2011) -- An entirely new type of nanomaterial could enable the next generation of high-power rechargeable lithium-ion batteries for electric automobiles, as well as batteries for laptop computers, mobile phones, and other portable devices. The new material, dubbed a "nanoscoop" because its shape resembles a cone with a scoop of ice cream on top, can withstand extremely high rates of charge and discharge that would cause conventional electrodes used in today's Li-ion batteries to rapidly deteriorate and fail. ... > full story
New glaucoma test allows earlier, more accurate detection (January 5, 2011) -- A prototype glaucoma test instrument that's noninvasive and simpler to use than current procedures -- and can also be used in situations that are difficult or impossible with current tests -- has been designed by engineering researchers. ... > full story
Oceanic 'garbage patch' not nearly as big as portrayed in media (January 5, 2011) -- There is a lot of plastic trash floating in the Pacific Ocean, but claims that the "Great Garbage Patch" between California and Japan is twice the size of Texas are grossly exaggerated, according to a new analysis. ... > full story
Detecting esophageal cancer with light (January 5, 2011) -- A tiny light source and sensors at the end of an endoscope may provide a more accurate way to identify pre-cancerous cells in the lining of the esophagus. ... > full story
US does not have infrastructure to consume more ethanol, study finds (January 5, 2011) -- The United States doesn't have the infrastructure to meet the federal mandate for renewable fuel use with ethanol but could meet the standard with significant increases in cellulosic and next-generation biofuels, according to a new study. ... > full story
Impregnating plastics with carbon dioxide (January 4, 2011) -- Everyone has heard that carbon dioxide is responsible for global warming. But the gas also has some positive characteristics. Researchers are now impregnating plastics with compressed CO2 in a process that could lead to new applications ranging from colored contact lenses to bacteria-resistant door handles. ... > full story
Kids frequently exposed to medical imaging procedures that use radiation, study finds (January 4, 2011) -- A new study shows that kids frequently receive imaging procedures during their routine clinical care, and highlights the importance of initiatives to ensure that those tests being performed are necessary and use the lowest possible doses of radiation. ... > full story
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