Tuesday, August 6, 2013

FeedaMail: ScienceDaily: Most Popular News

feedamail.com ScienceDaily: Most Popular News

Conservation efforts might encourage some to hunt lions

Some East African Maasai pastoralists may be hunting lions as a form of political protest, according to a new study.

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Stem cells found in gum tissue can fight inflammatory disease

Stem cells found in mouth tissue can not only become other types of cells but can also relieve inflammatory disease, according to a new study. The study indicates that the stem cells in the gingiva -- obtained via a simple biopsy of the gums -- may have important medical applications in the future.

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Carbon emissions to impact climate beyond the day after tomorrow

Future warming from fossil fuel burning could be more intense and longer-lasting than previously thought. This prediction emerges from a new study that includes insights from episodes of climate change in the geologic past to inform projections of human-made future climate change.

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Seafood menus from Hawaii reflect long-term ocean changes

The colorful restaurant menus that thousands of tourists bring home as souvenirs from Hawaii hold more than happy memories of island vacations. They also contain valuable data that are helping a trio of researchers track long-term changes to important fisheries in the Aloha State.

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Great-grandmother's cigarette habit could be the cause of child's asthma

A study finds for the first time that the third generation's asthma may be linked to maternal smoking.

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New explanation for odd double-layer Martian craters

The surface of Mars it pocked by more than 600 "double-layered ejecta" DLE craters, but how these odd craters formed has been a mystery. A new study makes the case that glacial ice, possibly tens of meters thick at the time of impacts millions of years ago, may be responsible for the unique features of DLEs.

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Genes that drive brain cancer revealed

Medical researchers have identified 18 new genes responsible for driving glioblastoma multiforme, the most common -- and most aggressive -- form of brain cancer in adults.

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Could discovery lead to end of sunburn pain?

The painful, red skin that comes from too much time in the sun is caused by a molecule abundant in the skin's epidermis, a new study shows. Blocking this molecule, called TRPV4, greatly protects against the painful effects of sunburn. The research, which was conducted in mouse models and human skin samples, could yield a way to combat sunburn and possibly several other causes of pain.

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Astronomers image lowest-mass exoplanet around a sun-like star

Using infrared data from the Subaru Telescope in Hawaii, an international team of astronomers has imaged a giant planet around the bright star GJ 504. Several times the mass of Jupiter and similar in size, the new world, dubbed GJ 504b, is the lowest-mass planet ever detected around a star like the sun using direct imaging techniques.

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Insulin pills? More intestinal cells than thought can absorb larger particles

A new study reports that the small intestine uses more cells than scientists had realized to absorb microspheres large enough to contain therapeutic protein drugs, such as insulin. The finding in rats is potentially good news for developing a means for oral delivery of such drugs.

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The molecule 'scanner': World's smallest terahertz detector invented

Molecules could soon be "scanned" in a fashion similar to imaging screenings at airports, thanks to a new detector.

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New challenges for mercury cleanup

More forms of mercury can be converted to deadly methylmercury than previously thought, according to a new study. The discovery provides scientists with another piece of the mercury puzzle, bringing them one step closer to understanding the challenges associated with mercury cleanup.

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Young vs. old: Who performs more consistently?

Older adults tend to exhibit less variability on cognitive tasks due to higher motivation, a balanced routine, and mood stability, according to new research.

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New way to dramatically raise RNA treatment potency: Proof-of-principle drug candidate powerfully neutralizes myotonic dystrophy defect

Scientists have shown a novel way to dramatically raise the potency of drug candidates targeting RNA, resulting in a 2,500-fold improvement in potency and significantly increasing their potential as therapeutic agents.

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Scientists add new bond to protein engineering toolbox

Proteins are the workhorses of cells, adopting conformations that allow them to set off chemical reactions, send signals and transport materials. But when a scientist is designing a new drug, trying to visualize the processes inside cells, or probe how molecules interact with each other, they can't always find a protein that will do the job they want. Instead, they often engineer their own novel proteins to use in experiments, either from scratch or by altering existing molecules.

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Celiac disease patients with ongoing intestine damage at lymphoma risk

Celiac disease patients with ongoing intestine damage have a greater than 2-fold increased risk of lymphoma vs. celiac patients whose intestines healed.

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Long-term use of some high blood pressure drugs associated with increased risk of breast cancer in postmenopausal women

Older women who take certain types of medication to combat high blood pressure may be putting themselves at greater risk for developing breast cancer, according to a new study.

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Reliable communication, unreliable networks

A new model of wireless networks that better represents the real world could lead to more robust communications protocols.

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Questions answered with the pupils of your eyes

Patients who are otherwise completely unable to communicate can answer yes or no questions within seconds with the help of a simple system -- consisting of just a laptop and camera -- that measures nothing but the size of their pupils. The tool takes advantage of changes in pupil size that naturally occur when people do mental arithmetic. It requires no specialized equipment or training at all.

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Disorder can improve the performance of plastic solar cells

Instead of mimicking rigid solar cells made of silicon crystals, materials scientists should embrace the inherently disordered nature of plastic polymers, say scientists. Their findings could speed up the development of low-cost, commercially available plastic solar cells and other electronic devices.

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Social status and power of action of speakers determine the way their statements are perceived

The actual standing of speakers within a society's power structure determines how their statements are perceived.

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Tidy desk or messy desk? Each has its benefits

Working at a clean and prim desk may promote healthy eating, generosity, and conventionality, according to new research. But, the research also shows that a messy desk may confer its own benefits, promoting creative thinking and stimulating new ideas.

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Timber rattlesnakes indirectly benefit human health: Not-so-horrid top predator helps check Lyme disease

Biologists found timber rattlesnakes, which prey on mice and other small mammals, help check humans' exposure to the tick-borne Lyme disease.

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Rapid diversification despite morphological stasis: A snail's pace in a snail's place?

Evolutionary biologists have found an unusual system that allows narrowing the gap in the study of evolutionary processes, working on living African freshwater snails and their fossil ancestors.

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'Nursery nests' are better for survival of young black-and-white ruffed lemurs

Research shows it is easier for female ruffed lemurs to raise their young using a system of communal nesting and crèches. Young Malagasy black-and-white ruffed lemurs are more likely to survive when they are raised in communal crèches or "nursery nests" in which their mothers share the draining responsibility of feeding and caring for their offspring.

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Breakdown of fat 'on hold': Biochemists discover 'parking position' of fat-burning enzymes

Fat is a curse and a blessing at the same time. While we would rather not have any fat deposits on our body, especially in summer, accumulated fats in plants are desirable as they make them especially nutritious. Biologists have found that enzymes are "parked" under certain conditions and suspend the breakdown of fat.

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Anti-social tendencies of entrepreneurs demonstrated

Media reports about alleged anti-social and delinquent behavior of entrepreneurs are no rarity. Such reports direct the attention towards possibly 'hidden' anti-social tendencies in entrepreneurial types. Is it true then, that entrepreneurs are a particularly self-serving species with their own moral ideas and ethical principles? Does he really exist, the type of the entrepreneurial 'homo oeconomicus' who first of all is interested in his own benefit and profit and who abandons ethical and social principles? And if so: what makes him so?

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Super sunscreen from fjord bacteria

A microorganism living in Trondheim Fjord will provide you with better protection against skin cancer and malignant melanomas.

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Personality may affect a new mother's decision to breastfeed

A new analysis has found that mothers who are more extroverted and less anxious are more likely to breastfeed and to continue to breastfeed than mothers who are introverted or anxious.

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Walking to work cuts risk of diabetes and high blood pressure

People who walk to work are around 40 per cent less likely to have diabetes as those who drive, according to a new study.

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'Beetle in spider's clothing:' Quaint new species from Philippine Rainforest Creeks

The extremely long-legged Spider Water Beetles have received increasing attention in science and media lately. Biologists have now discovered two new species, emphasizing their usefulness as water quality bioindicators. Important steps towards their use as monitoring organisms in the Philippines were accomplished by providing DNA barcodes, identification keys and detailed descriptions of the relevant larval and adult stages.

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Quantum communication controlled by resonance in 'artificial atoms'

Researchers have developed a method to control a quantum bit for electronic quantum communication in a series of quantum dots, which behave like artificial atoms in the solid state.

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New technique allows closer study of how radiation damages materials

Scientists have developed a technique that provides real-time images of how magnesium changes at the atomic scale when exposed to radiation. The technique may give researchers new insights into how radiation weakens the integrity of radiation-tolerant materials, such as those used in space exploration and in nuclear energy technologies.

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New design may produce heartier, more effective salmonella-based vaccines

Through genetic manipulation, the species S. Typhi can be rendered harmless and used in vaccines in order to prevent, rather than cause illness. Scientists have described efforts to improve the effectiveness of a Recombinant Attenuated Salmonella Vaccine by modifying its ability to survive the hostile environment of the stomach.

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Soil carbon 'blowing in the wind'

Australian soils are losing about 1.6 million tons of carbon per year from wind erosion and dust storms affecting agricultural productivity, our economy and carbon accounts, according to new research.

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Let's have lunch! Teachers eating with their students provides nutrition education opportunities

Much attention has focused on school meals, both in the United States and across the globe. Researchers have now evaluated teachers eating lunch with the school children. How you "have lunch" could be important in enhancing these opportunities.

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Stunning image of nearby galaxy M31

A stunning image of M31 has now been captured. M31, also known as the Andromeda Galaxy, is the spiral galaxy nearest to our own Milky Way Galaxy, 2.5 million light years from Earth. It is one of the brightest objects listed in the Messier catalog and has garnered the attention of observers since 964 A.D., when the Persian astronomer al-Sufi wrote about it.

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Bringing light to a halt: Physicists freeze motion of light for a minute

Physicists have been able to stop something that has the greatest possible speed and that never really stops. We're talking about light. A decade ago, physicists stopped it very for a short moment. In previous years, this extended towards stop times of a few seconds for simple light pulses in extremely cold gases and special crystals. But now the same researchers extended the possible duration and applications for freezing the motion of light considerably. The physicists stopped light for about one minute. They were also able to save images that were transferred by the light pulse into the crystal for a minute – a million times longer than previously possible.

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From harmless colonizers to virulent pathogens: Microbiologists identify what triggers disease

The bacteria Streptococcus pneumoniae harmlessly colonizes the mucous linings of throats and noses in most people, only becoming virulent when they leave those comfortable surroundings. Now, researchers reveal how that happens.

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Online predators not distinctively dangerous sex offenders

A new study challenges the view that online predators are a distinctly dangerous variety of sex offender, requiring special programs to protect youth.

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A layer of tiny grains can slow sound waves

Researchers say the findings could lead to a new way of controlling frequencies in electronic devices such as cellphones, but with components that are only a fraction the size of those currently used for that function. On a larger scale, it could lead to new types of blast-shielding material for use in combat or by public-safety personnel or equipment.

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How plants avoid sunburn

Scientists have discovered a group of stress-related proteins that explains how plants avoid sunburn in intense light, a finding that one day could help biotechnologists to develop crops that can better cope with hotter, drier conditions occurring in climate change.

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Why tumors become drug-resistant

New findings could lead to drugs that fight back when tumors don't respond to treatment.

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Altering organic molecules' interaction with light

Enhancing and manipulating the light emission of organic molecules is at heart of many important technological and scientific advances, including in the fields of organic light emitting devices, bio-imaging, bio-molecular detection. Researchers have now discovered a new platform that enables dramatic manipulation of the emission of organic molecules when simply suspended on top of a carefully designed planar slab with a periodic array of holes: So-called photonic crystal surface.

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