Tuesday, August 20, 2013

FeedaMail: ScienceDaily: Most Popular News

feedamail.com ScienceDaily: Most Popular News

Global sea level rise dampened by Australia floods

When enough raindrops fall over land instead of the ocean, they begin to add up. New research led by shows that three atmospheric patterns drove so much precipitation over Australia in 2010 and 2011 that the world's ocean levels dropped measurably.

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The concussed brain at work: fMRI study documents brain activation during concussion recovery

For the first time, researchers have documented irregular brain activity within the first 24 hours of a concussive injury, as well as an increased level of brain activity weeks later -- suggesting that the brain may compensate for the injury during the recovery time.

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Tiny fish make 'eyes' at their killer

Small prey fish can grow a bigger 'eye' on their rear fins as a way of distracting predators and dramatically boosting their chances of survival, new research has found. Researchers have made a world-first discovery that, when constantly threatened with being eaten, small damsel fish not only grow a larger false 'eye spot' near their tail -- but also reduce the size of their real eyes.

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'Poisoning' corrosion brings stainless magnesium closer

In a discovery that could have major implications for the aerospace, automotive and electronics industries, scientists have found a way to dramatically reduce the corrosion rate of lightweight wonder metal magnesium: adding arsenic.

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Potential disruption of endocrine system: Flame retardants can mimic estrogens, 3-D images show

By determining the three-dimensional structure of proteins at the atomic level, researchers have discovered how some commonly used flame retardants, called brominated flame retardants (BFRs), can mimic estrogen hormones and possibly disrupt the body's endocrine system. BFRs are chemicals added or applied to materials to slow or prevent the start or growth of fire.

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How shale fracking led to an Ohio town's first 100 earthquakes

Since records began in 1776, the people of Youngstown, Ohio had never experienced an earthquake. However, from January 2011, 109 tremors were recorded and new research reveals how this may be the result of shale fracking.

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Large moths need to hear better to get away from bats

The larger the moth, the better hearing senses it needs if it wants to avoid its worst enemy, the bat. A large moth is easier to detect for a bat, and therefore evolution has forced large moths to develop larger and more sensitive ears. But the improved hearing comes at a price, says sound researchers.

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Far from being harmless, the effects of bullying last long into adulthood

A new study published in Psychological Science, a journal of the Association for Psychological Science, shows that serious illness, struggling to hold down a regular job, and poor social relationships are just some of the adverse outcomes in adulthood faced by those exposed to bullying in childhood.

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Important step forward for gait analysis of horses

New research makes it possible to use sensors to accurately measure a horse's movements providing veterinarians a number of new possibilities.

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Finding where the Virginia big-eared bat roosts

A graduate student has discovered the summer roosts in North Carolina of the federally endangered Virginia big-eared bat. Until this summer no one knew where the bats raised their young.

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Brain cancer survival improved following FDA approval of bevacizumab

A new population-based study has found that patients with glioblastoma who died in 2010, after the Food and Drug Administration approval of bevacizumab, had lived significantly longer than patients who died of the disease in 2008, prior to the conditional approval of the drug for the treatment of the deadly brain cancer. Bevacizumab is used to treat patients with certain cancers whose cancer has spread.

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Molten magma can survive in upper crust for hundreds of millennia

Reservoirs of silica-rich magma – the kind that causes the most explosive volcanic eruptions – can persist in Earth's upper crust for hundreds of thousands of years without triggering an eruption, according to new research.

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Americans diagnosed with Lyme disease: Number may be 10 times more than reported

Preliminary estimates released by the Centers for Disease Control and Prevention indicate that the number of Americans diagnosed with Lyme disease each year is around 300,000. Lyme disease is the most commonly reported tick-borne illness in the United States. The new estimate suggests that the total number of people diagnosed with Lyme disease is roughly 10 times higher than the yearly reported number.

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Newly discovered ocean plume could be major source of iron

Scientists have discovered a vast plume of iron and other micronutrients more than 1,000 kilometers long billowing from hydrothermal vents in the South Atlantic Ocean. The finding calls past estimates of iron abundances into question, and may challenge researchers' assumptions about iron sources in the world's seas.

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A home for the microbiome: Biologists identify how beneficial bacteria reside and thrive in gastrointestinal tract

The human body is full of tiny microorganisms -- hundreds to thousands of species of bacteria collectively called the microbiome, which are believed to contribute to a healthy existence. The gastrointestinal tract is home to the largest concentration and highest diversity of bacterial species. But how do these organisms persist and thrive in a system that is constantly in flux? Biologists believe they have found the answer.

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Archaeologists find massive fortifications from the Iron Age in present-day Israel

Archaeologists have discovered the remains of massive ancient fortifications built around an Iron Age Assyrian harbor in present-day Israel. The fortifications appear to protect an artificial harbor, a discovery of international significance, experts say.

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Copper identified as culprit in Alzheimer's disease

Copper appears to be one of the main environmental factors that trigger the onset and enhance the progression of Alzheimer's disease by preventing the clearance and accelerating the accumulation of toxic proteins in the brain, new research suggests.

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Brain network decay detected in early Alzheimer's

In patients with early Alzheimer's disease, disruptions in brain networks emerge about the same time as chemical markers of the disease appear in the spinal fluid, researchers have shown.

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Native Californians followed the greenery: Environment shaped 12,000 years of ethnic and linguistic diversity

California's rich diversity of Native American ethnic-and-language groups took shape during the past 12,000 years as migrating tribes settled first on the lush Pacific coast and then in progressively drier, less-vegetated habitats, says a new study.

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Potential clue associated with aggressive prostate cancer identified

Researchers who are studying the underlying mechanisms that cause invasive tumor growth have identified a key transcription factor, a protein which regulates the flow of information from DNA, that is over-produced in treatment-resistant prostate cancer, as well as the two protein kinases that trigger the process.

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Tick by tick: Studying Crimean-Congo hemorrhagic fever virus carried by ticks

How do you safely work with ticks in a biosafety level four "spacesuit lab?" Step by painstaking step.

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High BPA levels in children associated with higher risk of obesity and abnormal waist circumference

Children who have higher levels of Bisphenol A (BPA), a chemical previously used in many products for kids, like baby bottle and plastic toys, had a higher odds of obesity and adverse levels of body fat, according to a new study.

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Microbial team turns corn stalks and leaves into better biofuel

A fungus and E. coli bacteria have joined forces to turn tough, waste plant material into isobutanol, a biofuel that matches gasoline's properties better than ethanol.

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New models advance the study of deadly human prion diseases

By directly altering the gene coding for the prion protein (PrP), researchers have created mouse models of two neurodegenerative prion diseases, each of which manifests in different regions of the brain. These new models for fatal familial insomnia (FFI) and Creutzfeldt-Jakob disease (CJD) accurately reflect the distinct patterns of destruction caused by the these diseases in humans.

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Recurrence risk for autism spectrum disorders examined for full, half siblings

A Danish study of siblings suggests the recurrence risks for autism spectrum disorders (ASDs) varied from 4.5 percent to 10.5 percent depending on the birth years, which is higher than the ASD risk of 1.18 percent in the overall Danish population, according to a new study.

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High-flying pilots at increased risk of brain lesions

A new study suggests that pilots who fly at high altitudes may be at an increased risk for brain lesions.

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Earliest known iron artifacts come from outer space

Researchers have shown that ancient Egyptian iron beads held at the UCL Petrie Museum were hammered from pieces of meteorites, rather than iron ore. The objects, which trace their origins to outer space, also predate the emergence of iron smelting by two millennia.

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'Street-view' comes to the world's coral reefs

Scientists are taking the public with them to study the world's coral reefs, thanks to 360 degree panoramas from Google's underwater street-view format. Results from this pioneering project will allow ecologists to harness people power to discover how coral reefs are responding to climate change.

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Scientists relate urban population to air pollution

Live in a large city like New York, London, Beijing or Mumbai, and you are likely exposed to more air pollution than people in smaller cities in surrounding areas. But exactly how a city's pollution relates to the size of its population has never been measured, until now.

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LSD and other psychedelics not linked with mental health problems

The use of LSD, magic mushrooms, or peyote does not increase a person's risk of developing mental health problems, according to an analysis of information from more than 130,000 randomly chosen people, including 22,000 people who had used psychedelics at least once. The researchers found no link between the use of psychedelic drugs and a range of mental health problems. Instead they found some significant associations between the use of psychedelic drugs and fewer mental health problems.

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Novel Chinese herbal medicine JSK improves spinal cord injury outcomes in rats

A new study demonstrates that Chinese herbal medicine Ji-Sui-Kang (JSK), given systemically for three weeks after injury in rats, improved locomotor function, reduced tissue damage, and preserved the structure of neural cells compared to control rats. The report also includes data showing that JSK may first act to reduce inflammation and cell apoptosis and death, and boost local oxygen supply while, later on, it appears to restore function and promote tissue regeneration.

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US depression treatment demonstrated effective for UK

Collaborative care involves depressed people having access to a team of specialists, with advice and support often given over the phone. A trial found that collaborative care led to improvement of depression symptoms immediately after treatment. Furthermore, 15 per cent more patients were still improved after 12 months, compared with those who saw their GP.

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Free-floating planets may be born free

Tiny, round, cold clouds in space have all the right characteristics to form planets with no parent star. New observations show that not all free-floating planets were thrown out of existing planetary systems. They can also be born free.

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An organized approach to 3-D tissue engineering: Getting closer to viable organ implants

Researchers have developed a simple method of organizing cells and their microenvironments in hydrogel fibers. Their unique technology provides a feasible template for assembling complex structures, such as liver and fat tissues.

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Neurologists report unique form of musical hallucinations

Neurologists report a unique case of a woman who hears music, as if a radio were playing in the back of her head. The case raises "intriguing questions regarding memory, forgetting and access to lost memories."

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The Vikings were not the first colonizers of the Faroe Islands

The Faroe Islands were colonized much earlier than previously believed, and it wasn't by the Vikings, according to new research.

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ALMA Takes Close Look at Drama of Starbirth

Astronomers have obtained a vivid close-up view of material streaming away from a newborn star. By looking at the glow coming from carbon monoxide molecules in an object called Herbig-Haro 46/47, they have discovered that its jets are even more energetic than previously thought. The very detailed new images have also revealed a previously unknown jet pointing in a totally different direction.

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Building better brain implants: The challenge of longevity

A new technique accommodates two challenges inherent in brain-implantation technology: gauging the property changes that occur during implantation and measuring them on a micro-scale.

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Traffic pollution and wood smoke increases asthma in adults

Asthma sufferers frequently exposed to heavy traffic pollution or smoke from wood fire heaters, experienced a significant worsening of symptoms, a new study has found.

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How brain microcircuits integrate information from different senses

Research sheds new light onto the unknown processes on how the brain integrates the inputs from the different senses in the complex circuits formed by molecularly distinct types of nerve cells.

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Divers willingness to pay for biodiversity could help conservation efforts

New research shows divers were willing to pay to improve the reef's attributes and were able to differentiate and rank their preferences of biodiversity, numbers of fish and corals, coral species richness, fish species richness, coral size, coral abundance, and fish abundance. Respondents ranked biodiversity as the most desirable value, while fish abundance was the least important.

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Anthropologists study the genesis of reciprocity in food sharing

When you share your lunch with someone less fortunate or give your friend half of your dessert, does that act of generosity flow from the milk of human kindness, or is it a subconscious strategy to assure reciprocity should you one day find yourself on the other side of the empty plate?

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Dams destabilize river food webs: Lessons from the Grand Canyon

Managing fish in human-altered rivers is a challenge because their food webs are sensitive to environmental disturbance. So reports a new study based on an exhaustive three-year analysis of the Colorado River in Glen and Grand Canyons.

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Möbius strip ties liquid crystal in knots to produce tomorrow's materials and photonic devices

Scientists have shown how to tie knots in liquid crystals using a miniature Möbius strip made from silica particles.

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Biomarkers for possible blood test to predict suicide risk identified

Researchers have found a series of RNA biomarkers in blood that may help identify who is at risk for committing suicide.

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Bacterial toxins cause deadly heart disease: Superantigens produced by staph bacteria are required for deadly effects of infective endocarditis and sepsis

Researchers have discovered what causes the lethal effects of staphylococcal infective endocarditis -- a serious bacterial infection of heart valves that kills approximately 20,000 Americans each year.

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Unscrambling the genetics of the chicken's 'blue' egg

Researchers have unscrambled the genetic mutation that gives the distinctive blue eggs laid by some breeds of chickens.

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Multiple genes manage how people taste sweeteners

Genetics may play a role in how people's taste receptors send signals, leading to a wide spectrum of taste preferences, according to food scientists. These varied, genetically influenced responses may mean that food and drink companies will need a range of artificial sweeteners to accommodate different consumer tastes.

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'Groovy' hologram creates strange state of light

A new three-in-one optical element can control light's amplitude, phase, and polarization through a wedding of old-fashioned holograms and state-of-the-art nanoscale features. An unusual state of light, a radially polarized beam, which is important for microscopy and particle manipulation, has been created by sending conventional laser light through this holographic plate.

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NEETs are prime suspects in breast cancer proliferation

Two proteins have been identified as prime suspects in the proliferation of breast cancer in a new study. The research may offer a path to therapies that could slow or stop breast cancer tumors from developing.

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