Wednesday, November 20, 2013

FeedaMail: ScienceDaily: Most Popular News

feedamail.com ScienceDaily: Most Popular News

Electrons in astrophysical plasma jets simulated

Physicists have been able to simulate the motion of billions of electrons within astrophysical plasma jets and calculate the light they emit with the help of a high-performance computer.

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More accurate method to date tropical glacier moraines

Scientists have found a more accurate method to determine the ages of boulders deposited by tropical glaciers, findings that will likely influence previous research of how climate change has impacted ice masses around the equator.

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UV-sensors from the oven: Nanostructure production process revolutionized

Placed in fire detectors and water treatment units UV-sensors can save lives; also in many areas of industry and environment the demand for these devices is rising steadily. Scientists have been able to "bake" nanostructures within seconds, in order to fabricate very fast UV-sensors. This new technique totally diminishes the need to use sophisticated equipments and toxic chemicals.

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The fashion scout and the cop: Scanning the streets with similar methods for different targets

University of Cincinnati research compares practices used by fashion industry casting directors to the New York City Police Department's controversial stop-and-frisk program.

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Faster surgery may be better for hip fractures

Among patients receiving standard care for hip fractures, 47% suffered a major complication of death, heart attack, stroke, pneumonia, blood clot or major bleeding event. However, only 30% of the patients in the accelerated surgery group suffered one of these complications.

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New treatment effective at reducing blood clots in brain-injured patients

Researchers have found that a new protocol that uses preventive blood-thinning medication in the treatment of patients with traumatic brain injuries reduces the risk of patients developing life-threatening blood clots without increasing the risk of bleeding inside the brain.

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Is a 'better world' possible?

Creating communities that are both diverse and socially cohesive may be a pipe dream, a sociologist argues in a new study.

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Most teen mental health problems go untreated

More than half of adolescents with psychiatric disorders receive no treatment of any sort, says a new study. When treatment does occur, the providers are rarely mental health specialists.

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Without sufficient support, community health centers will drop one million patients

A new report examines the impact of federal and state policy decisions on community health centers and their ability to continue providing primary care to the nation's poorest residents.

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Computer scientists create new 3-D technique

Computer scientists are using a famous mathematician's theory to make 3-D images that are more accurate approximations of the shapes of the original objects.

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Could saving the traditional pub be the answer to Britain's binge drinking problem?

A research study finds evidence for the traditional pub as a site for restrained and responsible social interaction for young adults. The UK government wants further controls to restrict high street bars but on the other hand is concerned about the decline in the number of traditional public houses or pubs. A recent article discusses whether the English Planning System should distinguish between pubs for the 'public good' and licensed premises associated with 'social ills'?

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Consumers order a healthier meal when menu has nutritional labeling

An evaluation team has published a new study demonstrating that customers of full-service restaurants use nutritional labeling on menus to make healthier food choices. Customers who reported they used labels purchased 400 fewer calories (representing a relative difference of 20 percent).

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People new to power more likely to be vengeful

New research has shown that people who are not accustomed to holding power are more likely to be vengeful when placed in charge. Experienced power-holders, on the other hand, were found to be more tolerant of perceived wrongdoing. The research explored for the first time the relationship between power and revenge.

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Pipelines carry out their own health checks

Long pipelines crammed with electronics are being tested in the waters of Orkanger harbor in Norway. They are the first in the world able to report their technical condition to personnel onshore.

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Mutations of immune system found in breast cancers

Mutations in the genes that defend the body against cancer-related viruses and other infections may play a larger role in breast cancer than previously thought, according to a study.

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New study may impact practice guidelines for mitral valve surgery

Researchers report for the first time evidence on whether or not there is any significant difference between the two current surgical approaches to treat patients with severe ischemic mitral regurgitation -- mitral valve repair and mitral valve replacement.

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Poultry probiotic's coat clues to ability to battle bugs

Researchers have characterized the coat of potential poultry probiotic bacteria, giving the first clues of how this may be used to exclude pathogenic bacteria from chickens, and so reduce the use of antibiotics to control food poisoning bacteria.

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A happy patient is well connected to a doctor

The happiest patients are those who have regular contact with their doctors. A study finds that patients who have established "continuity of care" with primary-care physician are most satisfied with their treatment. The study comes as the American health care system moves to a more team-based approach to care, known as patient-centered medical home.

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Engineers use keyboard, mouse and mobile device 'fingerprints' to protect data

Engineers are working to protect computer networks and data by using unique keyboard, computer mouse and mobile device "fingerprints."

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New species of crustacean discovered on coast of California

A recent study describes a new species of marine crustacean found on the coast of California.

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What water looks like to DNA

Biochemists and mathematicians have developed a sophisticated geometric model to predict how a biological molecule will interact with water molecules, computing the results up to 20 times faster than other existing approaches. This new approach may help researchers find new drugs to treat human diseases.

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Paradigm shift in organic solar cell research?

A new study overturns a widely held explanation for how organic photovoltaics turn sunlight into electricity.

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Evidence of ancient human history encoded in music's complex patterns

Just as fragments of ancient pottery and bones offer valuable information about human history, music can also reveal clues about the past, according to new research.

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Enhancing battery performance for portable electronics

The ever-increasing market for portable electronic devices has resulted in an equally heavy demand for rechargeable batteries, lithium-ion (Li-ion) being among the most popular. Scientists and engineers are seeking ways to improve the power density, durability and overall performance of Lithium-ion batteries, and in a recent paper researchers report an advance in Li-ion battery technology that they describe as a major breakthrough.

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New modelling technique could bypass the need for engineering prototypes

A new modelling technique has been developed that could eliminate the need to build costly prototypes, which are used to test engineering structures such as airplanes.

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Peering into the future: How cities grow

How cities will grow in the future depends on fundamental laws, which have now been uncovered.

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Holistic cell design leads to high-performance, long cycle-life Li/S battery

Researchers have demonstrated in the laboratory a lithium-sulfur (Li/S) battery that has more than twice the specific energy of lithium-ion batteries, and that lasts for more than 1,500 cycles of charge-discharge with minimal decay of the battery's capacity. This is the longest cycle life reported so far for any lithium-sulfur battery.

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Synesthesia is more common in autism

People with autism are more likely to also have synaesthesia, suggests new research in the journal Molecular Autism.

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AIDS guidelines for children may not improve death rates but may improve treatment access

Recent changes to World Health Organization guidelines for starting anti-AIDS drugs (antiretroviral therapy—ART) in young children are unlikely to improve death rates but may increase the numbers of children receiving ART by simplifying access to treatment, according to a new study.

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Neanderthal viruses found in modern humans

Ancient viruses from Neanderthals have been found in modern human DNA. Researchers compared genetic data from fossils of Neanderthals and another group of ancient human ancestors called Denisovans to data from modern-day cancer patients. They found evidence of Neanderthal and Denisovan viruses in the modern human DNA, suggesting that the viruses originated in our common ancestors more than half a million years ago.

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Electrified diamonds: Physicists on the trail of quantum information

With the help of tiny diamond crystals, physicists have discovered new possibilities of quantum information: The scientists discovered at specific circumstances electric currents that made it possible to identify defects in the carbon lattice of single diamonds measuring only a few nanometers.

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Testing smart plastics in real time

Nano additives can make plastics scratch and flame proof, or give them antibacterial properties. For this to work, the particle distribution within the plastic compound must be absolutely correct. A new device is now able to test the distribution in real time.

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Coal continues to dominate global carbon emissions

Despite explosive growth in renewable energy consumption, continued strong growth in coal consumption has further consolidated coal as the dominate source of carbon dioxide emissions.

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Underwater 'tree rings' show 650 years of sea ice change

Almost 650 years of annual change in sea-ice cover can been seen in the calcite crust growth layers of seafloor algae, says a new study.

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CT and 3-D printers used to recreate dinosaur fossils

Data from computed tomography scans can be used with three-dimensional printers to make accurate copies of fossilized bones, according to new research.

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The Galaxy's ancient brown dwarf population revealed

Astronomers have discovered two of the oldest brown dwarfs in the Galaxy. These ancient objects are moving at speeds of 100-200 kilometers per second, much faster than normal stars and other brown dwarfs and are thought to have formed when the Galaxy was very young, more than 10 billion years ago.

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World's first known magnetic cellulose loudspeakers: Potential for magnetic cellulose comes in crisp and clear

They're flat, ultra-thin and great-sounding. The world's first known magnetic cellulose loudspeakers have been demonstrated.

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Medieval origins of debate on classroom beatings

The connection between formal education and corporal punishment is a venerable and persistent one.

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Brain activity in severely brain injured patients who 'wake up' with sleeping pill: Other patients may also respond

George Melendez has been called a medical miracle. After a near drowning deprived his brain of oxygen, Melendez remained in a fitful, minimally conscious state until his mother, in 2002, decided to give him the sleep aid drug Ambien to quiet his moaning and writhing. The next thing she knew, her son was quietly looking at her and trying to talk. He has been using the drug ever since to maintain awareness, but no one could understand why Ambien led to such an awakening.

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Services fail to treat prisoners with schizophrenia, increasing risk of violent reoffending, UK study shows

New research shows released prisoners with schizophrenia are three times more likely to be violent than other prisoners, but only if they receive no treatment or follow-up support from mental health services.

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Magnetic nanoparticles could aid heat dissipation in nuclear plant cooling systems and electronics

Researchers find that particles suspended in cooling water could prevent hotspots in nuclear plant cooling systems and electronics.

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Predicting human body height from DNA

Predicting adult body height from genetic data is helpful in several areas such as pediatric endocrinology and forensic investigations. However, despite large international efforts to catalog the genes that influence the stature of humans, knowledge on genetic determinants of adult body height is still incomplete. Now DNA-based prediction of taller-than-average body height is feasible.

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Specially designed nanostructured materials can increase the light-absorbing efficiency of solar cells

The Sun is our most promising source of clean and renewable energy. The energy that reaches Earth from the Sun in an hour is almost equivalent to that consumed by humans over a year. Solar cells can tap this massive source of energy by converting light into an electrical current. However, these devices still require significant improvements in efficiency before they can compete with more traditional energy sources. New research has increased the light-absorbing efficiency of solar cells.

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Novel material stores unusually large amounts of hydrogen

Researchers has synthesized a new material that stores an unusually large amount of hydrogen. Performing high-pressure X-ray studies, the scientists detected the formation of previously unobserved iridium hydride at a pressure of 55 gigapascals, corresponding to approximately 550,000 times the Earth's atmospheric pressure. The new material can store up to three times more hydrogen than most other metal hydrides.

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Solar-powered battery woven into fabric overcomes hurdle for 'wearable electronics'

Though some people already seem inseparable from their smartphones, even more convenient, wearable, solar-powered electronics could be on the way soon, woven into clothing fibers or incorporated into watchbands. This novel battery development could usher in a new era of "wearable electronics."

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Newly discovered ancestral enzyme facilitates DNA repair

Researchers have discovered how a new human enzyme, the protein PrimPol, is capable of recognizing DNA lesions and facilitate their repair during the DNA copying process, thus avoiding irreversible and lethal damage to the cells and, therefore, to the organism.

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Insomnia linked to mortality risk

Insomnia, the most common sleep disorder, affects up to one-third of the population in the United States. In new findings, researchers have found that some insomnia symptoms are associated with an increased risk of mortality in men.

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Coffee may help perk up your blood vessels

A small study showed that a cup of coffee improved small blood vessel function. The study takes us one step closer to understanding how coffee might benefit cardiovascular health.

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Invasive sparrows immune cells sharpen as they spread

Researchers find the immune systems of house sparrows at the edge of the species' range in Kenya were more attuned to finding dangerous parasites than birds from older sites in the same country. These differences may help keep invading birds from becoming sick in new areas where pathogens are more likely novel.

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Computer searches web 24/7 to analyze images and teach itself common sense

A computer program called the Never Ending Image Learner (NEIL) is running 24 hours a day searching the Internet for images, doing its best to understand them on its own and, as it builds a growing visual database, gathering common sense on a massive scale.

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Sixth sense in mechanical engineering: Sensor screw measures forces inside machines

An age-old engineering problem: how do you precisely measure the forces that act between two components inside a machine or, for example, on the sail of a boat without drilling holes or sticking on a sensor? Researchers have now developed a brilliantly simple solution: a screw with an integrated sensor.

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Higher levels of control, support at work increases wellbeing

Research reveals positive aspects of working life -- such as high levels of control at work, good support from supervisors and colleagues, and feeling cared for -- support higher levels of well-being among Britain's workers.

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Distracted driving killing more pedestrians, bicyclists

From 2005 to 2010, the national number of pedestrians struck and killed by distracted drivers went up from 344 to 500 – an almost 50 percent increase. For cyclists, the numbers killed went from 56 to 73 — a 30 percent increase.

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HIV virus spread, evolution studied through computer modeling

Researchers are investigating the complex relationships between the spread of the HIV virus in a population (epidemiology) and the actual, rapid evolution of the virus (phylogenetics) within each patient's body.

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Selecting mathematical models with greatest predictive power: Finding Occam's razor in an era of information overload

How to predict actions and reactions of things invisible to human eye? Physicists now show that there may be a preferred strategy for selecting mathematical models with the greatest predictive power. Picking the best model is about sticking to the simplest line of reasoning, experts say.

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Three new wafer trapdoor spiders from Brazil

Scientists have discovered three new gorgeous species of the wafer trapdoor genus Fufius. Little is known about the biology of the enigmatic Cyrtaucheniidae family, but among the curiosities is that these spiders live in burrows or silken tubes in crevices, carefully prolongued with silk.

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Breakthrough in adult heart repair

Cardiovascular disease (CVD) is responsible for approximately one-third of all deaths. A major problem with CVD is that adult hearts do not repair well after injury. Now, researchers have discovered a way to change that. By identifying and manipulating the normal signals that block heart repair, they were able to show complete functional heart recovery in adult mice after myocardial infarction, which mimics a human heart attack. This breakthrough brings new hope for treating CVD.

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