Wednesday, September 18, 2013

FeedaMail: ScienceDaily: Most Popular News

feedamail.com ScienceDaily: Most Popular News

Weak charge of proton determined for first time

Researchers have made the first experimental determination of the weak charge of the proton. The results also include the determinations of the weak charge of the neutron, and of the up quark and down quark.

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Researchers study ways to make stronger materials in 3-D

Using methods similar to 3-D printing, researchers are running computer simulations of processes that could lead to stronger, more durable materials for the space agency.

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Ability to move to a beat linked to brain's response to speech: Musical training may sharpen language processing

People who are better able to move to a beat show more consistent brain responses to speech than those with less rhythm, according to a new study. The findings suggest that musical training could possibly sharpen the brain's response to language.

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Stronger winds explain puzzling growth of sea ice in Antarctica

Much attention is paid to melting sea ice in the Arctic. But less clear is the situation on the other side of the planet. Despite warmer air and oceans, there's more sea ice in Antarctica now than in the 1970s -- a fact often pounced on by global warming skeptics. The latest numbers suggest the Antarctic sea ice may be heading toward a record high this year. The reason may lie in the winds. A new modeling study shows that stronger polar winds lead to an increase in Antarctic sea ice, even in a warming climate.

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Dinosaur wind tunnel test provides new insight into the evolution of bird flight

A study into the aerodynamic performance of feathered dinosaurs has provided new insight into the evolution of bird flight. In recent years, new fossil discoveries have changed our view of the early evolution of birds and, more critically, their powers of flight. We now know about a number of small-bodied dinosaurs that had feathers on their wings as well as on their legs and tails: completely unique in the fossil record.

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Young stars cooking in the Prawn nebula

Located around 6000 light-years from Earth in the constellation of Scorpius (The Scorpion), the nebula formally known as IC 4628 is a huge region filled with gas and clumps of dark dust. These gas clouds are star-forming regions, producing brilliant hot young stars. In visible light, these stars appear as a blue-white color, but they also emit intense radiation in other parts of the spectrum — most notably in the ultraviolet.

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Green photon beams more agile than optical tweezers

Scientists have discovered a novel approach for the optical manipulation of macromolecules and biological cells. Their findings stem from challenging the idea that visible light would induce no physical effect on them since it is not absorbed. Instead they used green photon beams. With them, it is possible to perform optical manipulation of macrostructures, such as biological proteins, with greater precision than with optical tweezers made from focused laser beams.

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Algorithm finds missing phytoplankton in Southern Ocean

NASA satellites may have missed more than 50 percent of the phytoplankton in the Southern Ocean. But now, new research has led to the development of an algorithm that produces substantially more accurate estimates of Southern Ocean phytoplankton populations.

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Are nanodiamond-encrusted teeth the future of dental implants?

Osteonecrosis, or bone cell death, can result in debilitating damage to prosthetic joint and tooth implants, among others. Failures with these implants often require painful follow-on surgeries and increased medical costs. Nanodiamonds have been developed for the sustained and simultaneous delivery of two proteins that promote bone growth. While conventional approaches require the surgical implantation of a sponge to deliver these proteins, administering the nanodiamonds via injection or as a rinse is non-invasive.

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'Live vaccine' for gonorrhea prevents reinfection

A new gonorrhea treatment, based on an anti-cancer therapy, has successfully eliminated gonococcal infection from female mice and prevented reinfection, according to research published today.

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Nanocrystal catalyst transforms impure hydrogen into electricity

Scientists have used a simple, 'green' process to create a novel core-shell catalyst that tolerates carbon monoxide in fuel cells and opens new, inexpensive pathways for zero-emission vehicles.

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Moderate exercising encourages a healthier lifestyle

An interdisciplinary research study explains why moderate exercising is more motivating than hard training.

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Signal gradients in 3-D guide stem cell behavior

Researchers have developed an easy and versatile way of forming physical and biochemical gradients in three dimensions -- a step toward identifying the recipes that induce stem cells to generate specific tissues, including multiple tissues, such as a bone-cartilage interface. Ultimately, one of their goals is to engineer systems to manipulate stem cells to repair or replace damaged tissues and organs.

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New HIV-1 replication pathway discovered

A team of researchers has discovered a new way that HIV-1 reproduces itself, which could advance the search for new ways to combat infection.

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Scaling up personalized query results for next generation of search engines

Researchers have developed a way for search engines to provide users with more accurate, personalized search results. The challenge in the past has been how to scale this approach up so that it doesn't consume massive computer resources. Now the researchers have devised a technique for implementing personalized searches that is more than 100 times more efficient than previous approaches.

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Chronic inflammation of blood vessels connected to childhood mortality in malaria regions

Recurrent episodes of malaria cause chronic inflammation in blood vessels that might predispose to future infections and may increase susceptibility to cardiovascular disease, a study in Malawian children finds.

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Breast conserving treatment with radiotherapy reduces risk of local recurrence

Results of a study shows that breast conserving treatment combined with radiotherapy reduces the risk of local recurrence in women with ductal carcinoma in situ.

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Southern Ocean sampling reveals travels of marine microbes

By collecting water samples up to six kilometers below the surface of the Southern Ocean, researchers have shown for the first time the impact of ocean currents on the distribution and abundance of marine micro-organisms. Twenty-five samples were collected across a 3,000 kilometer stretch of ocean and genetic sequencing of the microbial DNA in each sample was carried out. The research shows that microbial communities that are connected by ocean currents are more similar to each other.

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4 new species of 'legless lizards' discovered living on the edge

Legless lizards evolved on five continents to burrow in loose soil and sand, but are rarely seen because they live underground. Hence the surprise when biologists found four new species in California, living in marginal areas like downtown Bakersfield, San Joaquin Valley oil fields and west of the runways at the airport. The discovery, which brings the number of species in the state to five, illustrates the undiscovered biodiversity around us.

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Hormone therapy formulations may pose varying risks for heart attack and stroke

Post-menopausal women whose doctors prescribe hormone replacement therapy for severe hot flashes and other menopause symptoms may want to consider taking low doses of bioidentical forms of estrogen or getting their hormones via a transdermal patch. A new observational study shows bioidentical hormones in transdermal patches may be associated with a lower risk of heart attack may be associated with a slightly lower risk of stroke compared to synthetic hormones in pill form.

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Shining light on neurodegenerative pathway

Researchers have identified a likely molecular pathway that causes a group of untreatable neurodegenerative diseases, including Huntington's disease and Lou Gehrig's disease.

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Binge eating more likely to lead to health risks in men

Binge eating is a problem affecting both men and women, however obese men who binge are more likely than their female counterparts to have elevated cholesterol and high blood pressure, finds a new study.

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'Shy' male birds flock together -- and have fewer friends

Male birds that exhibit "shy" social behavior are much more likely to join flocks of birds with a similar personality than their "bold" male counterparts, a new study has found. But shy birds also have fewer social partners than bold birds.

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Women underrepresented, sexualized in weekend sports reporting

Sunday newspapers promote the weekend as a male domain centred around their activities and interests, according to new research.

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Emotional attachment to robots could affect outcome on battlefield

It's becoming more common to have robots sub in for humans to do dirty or sometimes dangerous work. But researchers are finding that in some cases, people have started to treat robots like pets, friends, or even as an extension of themselves. That raises the question: if a soldier attaches human or animal-like characteristics to a field robot, can it affect how they use the robot?

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Beyond quantum simulation: Physicists create 'crystal' of spin-swapping ultracold molecules

Physicists have created a crystal-like arrangement of ultracold gas molecules that swap quantum "spin" properties with nearby and distant partners. The novel structure might be used to simulate or even invent new materials that derive exotic properties from quantum spin behavior, for electronics or other practical applications.

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Novel gene discovery could lead to new HIV treatments

Medical researchers have for the first time identified a new gene which may have the ability to prevent HIV, the virus that causes AIDS, from spreading after it enters the body.

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Origins of genomic 'dark matter' discovered

A major milestone has been achieved in understanding genomic "dark matter" -- called non-coding RNA. This "dark matter" is difficult to detect and no one knows exactly what it is doing or why it is there in our genome, but scientists suspect it may be the source of inherited diseases. This research achievement may help to pinpoint exactly where complex-disease traits reside in the human genome.

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Undersea mountains provide crucial piece in climate prediction puzzle

A mystery in the ocean near Antarctica has been solved by researchers who have long puzzled over how deep and mid-depth ocean waters are mixed. They found that sea water mixes dramatically as it rushes over undersea mountains in Drake Passage -- the channel between the southern tip of South America and the Antarctic continent. Mixing of water layers in the oceans is crucial in regulating the Earth's climate and ocean currents.

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Drivers of financial boom and bust may be all in the mind, study finds

Market bubbles that lead to financial crashes may be self-made because of instinctive biological mechanisms in traders' brains that lead them to try and predict how others behave, according to a new study.

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Subset of children considered to have autism may be misdiagnosed

Children with a genetic disorder called 22q11.2 deletion syndrome, who frequently are believed to also have autism, often may be misidentified because the social impairments associated with their developmental delay may mimic the features of autism, a study suggests.

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Plastics from renewable raw materials: Body automatically breaks down implants

Researchers have managed to develop absorbable implants to promote bone healing which are broken down by the body.  In this way, painful multiple operations – especially in children – can be avoided in the future.

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Insight into protective mechanisms for hearing loss

Researchers from the Eaton-Peabody Laboratories of the Massachusetts Eye and Ear and Harvard Medical School have created a new mouse model in which by expressing a gene in the inner ear hair cells -- the sensory cells that detect sound and sense balance -- protects the mice from age-related hearing loss and noise-induced hearing loss, the two most common forms of deafness.

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Stem cell reprogramming made easier

Scientists show that removing one protein from adult cells enables them to efficiently turn back the clock to a stem-cell-like state.

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controlling wettability: 'Sticky tape' for water droplets mimics rose petal

A new nanostructured material may lead to surfaces that stay dry forever, never need cleaning and are able to repel bacteria and even prevent mold and fungi growth.

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Smartphone app found to be valid tool in screening for cognitive dysfunction

A smartphone app can quickly screen for cognitive dysfunction often found in patients with cirrhosis, known as minimal hepatic encephalopathy, has been difficult to diagnose.

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Shared mechanisms in fragile X syndrome, autism and schizophrenia at neuronal synapses

Several psychiatric conditions such as schizophrenia, autism and intellectual disabilities share the same brain cell abnormalities: the contacts (synapses) between brain cells are poorly developed and not functional. Researchers have unraveled how a single protein orchestrates two biological processes to form proper contacts between brain cells. Importantly, the researchers identified various proteins that are important for the balance of the two processes and associated with several neurological disorders.

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New teaching method improves math skills, closes gender gap in young students

When early elementary math teachers ask students to explain their problem-solving strategies and then tailor instruction to address specific gaps in their understanding, students learn significantly more than those taught using a more traditional approach. This was the conclusion of a yearlong study of nearly 5,000 kindergarten and first-grade students.

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Photosynthesis mechanism: Tofu-like crystalline catalysts for producing clean energy

New research demystifies the reaction mechanisms of photosynthesis. The findings may lead to the development of methods for producing an unlimited source of clean energy.

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Innovative auto steering device could save lives

An alternative steering device for automobiles has been developed that could help to prevent hazards such as rear-end collisions and rollovers caused by panic oversteering.

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New muscular dystrophy treatment shows promise

A preclinical study has found that a new oral drug shows early promise for the treatment of Duchenne muscular dystrophy. The results show that the drug, VBP15, decreases inflammation and protects and strengthens muscle without the harsh side effects linked to current treatments with glucocorticoids such as prednisone.

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Uncovering cancer's inner workings by capturing live images of growing tumors

Scientists seeking new ways to fight cancer often try to understand the subtle, often invisible, changes to DNA, proteins, cells, and tissue that alter the body's normal biology and cause disease. Now, to aid in that fight, a team of researchers has developed a sophisticated new optical imaging tool that enables scientists to look deep within tumors and uncover their inner workings.

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