الأربعاء، 9 أكتوبر 2013

ScienceDaily: Top News

ScienceDaily: Top News


Diamond 'super-Earth' may not be quite so precious

Posted: 08 Oct 2013 01:54 PM PDT

An alien world believed to be the first-known planet to consist largely of diamond now appears less likely to be of such precious nature, according to a new analysis.

From slowdown to shutdown: US leadership in biomedical research takes a blow, experts say

Posted: 08 Oct 2013 12:22 PM PDT

The American Society for Cell Biology warns that temporary shutdown is inflicting long-term damage on American biomedicine.

Women suffer most from urinary tract infections, men more likely to be hospitalized

Posted: 08 Oct 2013 11:22 AM PDT

While women are far more likely to suffer urinary tract infections, men are more prone to be hospitalized for treatment. The first-of-its-kind research for the most common bacterial infection in the US is important in providing predictors of hospital admission at a time when the health care industry is searching for ways to reduce costs.

Juno slingshots past Earth on its way to Jupiter

Posted: 08 Oct 2013 11:22 AM PDT

NASA's Juno spacecraft will be passing within some 350 miles of Earth's surface Oct. 9 before it slingshots off into space on an historic exploration of Jupiter.

Innovative deep-sea manned submarine under construction

Posted: 08 Oct 2013 11:21 AM PDT

The University of Washington is working with Boeing and an Everett company to build a carbon-fiber submersible that will carry five passengers almost 2 miles deep.

Postpartum depression spans generations, animal study suggests

Posted: 08 Oct 2013 10:29 AM PDT

A recently published study suggests that exposure to social stress not only impairs a mother's ability to care for her children but can also negatively impact her daughter's ability to provide maternal care to future offspring.

A slow, loving, 'affective' touch may be key to a healthy sense of self

Posted: 08 Oct 2013 10:29 AM PDT

Researchers found that a loving touch, characterized by a slow caress or stroke -- often an instinctive mother/child gesture or between romantic partners -- may boost the brain's sense of body ownership and, in turn, play a part in creating and sustaining a healthy sense of self.

Clues to foam formation could help find oil

Posted: 08 Oct 2013 10:29 AM PDT

Scientists have discovered two previously unknown ways bubbles form in foam as they investigated materials targeted for enhanced oil recovery.

Weighed down by guilt: Research shows it's more than a metaphor

Posted: 08 Oct 2013 10:28 AM PDT

Ever feel the weight of guilt? Lots of people say they do. They're "carrying guilt" or "weighed down by guilt." Are these just expressions, or is there something more to these metaphors? Researchers have now found evidence that the emotional experience of guilt can be grounded in subjective bodily sensation.

First computer-designed superconductor created

Posted: 08 Oct 2013 10:28 AM PDT

Scientists report the successful synthesis of the first superconductor designed entirely on the computer.

New therapeutic target that prevents cell division

Posted: 08 Oct 2013 09:31 AM PDT

Researchers have managed to decode a new mechanism that regulates cell division, in which the key molecule involved, Greatwall -- also known as Mastl -- could be a new therapeutic target for oncology treatments.

Excessive nerve cell pruning leads to disease

Posted: 08 Oct 2013 09:31 AM PDT

Scientists have made important discoveries about a cellular process that occurs during normal brain development and may play an important role in neurodegenerative diseases. The study's findings point to new pathways and targets for novel therapies for Alzheimer's, Parkinson's, ALS and other neurodegenerative diseases that affect millions of people world-wide.

Solving the Internet capacity crunch: First demonstration of a multicore fiber network

Posted: 08 Oct 2013 09:29 AM PDT

Scientists have demonstrated successfully for the first time a multicore fiber-based network, which will form the foundation for the future Internet infrastructure.

Something in the (expecting mother's) water: Contaminated water breeds low-weight babies, sometimes born prematurely

Posted: 08 Oct 2013 09:29 AM PDT

Pregnant women living in areas with contaminated drinking water may be more likely to have babies that are premature or with low birth weights (considered less than 5.5 pounds), according to a new study.

'Cyberchondria' from online health searches is worse for those who fear the unknown

Posted: 08 Oct 2013 09:29 AM PDT

Turning to the Internet to find out what ails you is common, but for folks who have trouble handling uncertainty, "cyberchondria" -- the online counterpart to hypochondria -- worsens as they seek answers.

Part of brain that makes humans and primates social creatures may play similar role in carnivores

Posted: 08 Oct 2013 08:25 AM PDT

The part of the brain that makes humans and primates social creatures may play a similar role in carnivores, according to a growing body of research. In studying spotted hyenas, lions and, most recently, the raccoon family, biologists found a correlation between the size of the animals' frontal cortex and their social nature.

Major leap towards graphene for solar cells

Posted: 08 Oct 2013 08:25 AM PDT

Scientists have shown that graphene retains its impressive set of properties when it is coated with a thin silicon film. These findings have paved the way for entirely new possibilities to use in thin-film photovoltaics.

DNA research sheds light on ancestry of Ashkenazi Jews

Posted: 08 Oct 2013 08:25 AM PDT

Many of the maternal ancestors of modern Ashkenazi Jews were European converts, according to new research. Analysis of DNA samples has shown that on the female line, the Ashkenazim are descended not from the Near East but from southern and western Europe.

Team uses a cellulosic biofuels byproduct to increase ethanol yield

Posted: 08 Oct 2013 08:25 AM PDT

Scientists have engineered yeast to consume acetic acid, a previously unwanted byproduct of the process of converting plant leaves, stems and other tissues into biofuels. The innovation increases ethanol yield from lignocellulosic sources by about 10 percent.

Printed electronics: A multi-touch sensor customizable with scissors

Posted: 08 Oct 2013 08:24 AM PDT

If a pair of long pants is too long, it is cut and hemmed. A board that does not fit into a bookcase is sawed to the right length. People often customize the size and shape of materials like textiles and wood without turning to specialists like tailors or carpenters. In the future this should be possible with electronics, according to the vision of computer scientists who have developed a printable multi-touch sensor whose shape and size everybody can alter. A new circuit layout makes it robust against cuts, damage, and removed areas.

Archaeology experts solve 200 year old mystery of Roman statue

Posted: 08 Oct 2013 08:24 AM PDT

Archaeologists have been able to identify a stone head that was found in a flowerbed in Chichester over 200 years ago, and remained a mystery ever since. Using the latest laser scanning technology, they have revealed that The Bosham Head, as it is known, is from a Roman statue of Emperor Trajan, dating back to AD 122, and one of the most significant Roman finds in Britain.

Non-specific, specific RNA binding proteins found to be fundamentally similar

Posted: 08 Oct 2013 08:24 AM PDT

Researchers have found unexpected similarities between proteins that were thought to be fundamentally different. The team published a new study showing that non-specific proteins actually have the ability to be specific about where they bind to RNA – seeking out and binding with particular sequences of nucleotides.

Iron melt network helped grow Earth's core, study suggests

Posted: 08 Oct 2013 07:26 AM PDT

Scientists recreated the intense pressures and temperatures found deep within the Earth, resulting in a discovery that complicates theories of how the planet and its core were formed.

Primate brains follow predictable developmental pattern

Posted: 08 Oct 2013 07:25 AM PDT

In a breakthrough for understanding brain evolution, neuroscientists have shown that differences between primate brains -- from the tiny marmoset to human -- can be largely explained as consequences of the same genetic program.

Evolutionary question answered: Ants more closely related to bees than to most wasps

Posted: 08 Oct 2013 07:25 AM PDT

Genome sequencing and bioinformatics resolves a long-standing, evolutionary issue, demonstrating that ants and bees are more closely related to each other than they are to certain wasps.

How viral proteins are produced: New clues

Posted: 08 Oct 2013 07:25 AM PDT

Understanding how viral proteins are produced can provide important clues on how we might interfere with the process. Scientists have discovered that a key protease of a particular virus breaks itself down into two different functional molecules. The findings may have important implications for the development of defense strategies against diseases caused by flaviviruses.

Sunscreen saves superhero gene

Posted: 08 Oct 2013 07:25 AM PDT

Next time your kids complain about putting on sunscreen, tell them this: Sunscreen shields a superhero gene that protects them from getting cancer. Researchers have found sunscreen provides 100 percent protection against all three forms of skin cancer.

Working together: Bacteria join forces to produce electricity

Posted: 08 Oct 2013 07:25 AM PDT

Scientists have explored the relationships of two important bacterial forms, demonstrating their ability to produce electricity by coordinating their metabolic activities.

Adherence to guidelines for severe traumatic brain injury saves lives

Posted: 08 Oct 2013 07:25 AM PDT

Researchers found a significant reduction in the number of deaths of patients hospitalized in New York State with severe traumatic brain injury between 2001 and 2009. Data from 22 trauma centers in New York State were studied. The reduction in deaths at these centers corresponded to increased adherence to tenets of the "Guidelines for Management of Severe Traumatic Brain Injury."

No viral cause for breast cancer and brain tumors

Posted: 08 Oct 2013 07:23 AM PDT

A major study has now disproved theories of a viral cause for breast cancer and the brain tumour, glioblastoma. The study, which was based on over seven billion DNA sequences, found no genetic traces of viruses in these forms of cancer. It has been scientifically proven that about 15 per cent of all cancer cases are the result of viral infection, but many researchers believe that even more cancers could be caused by viruses.

Malaria vaccine candidate reduces disease in children

Posted: 08 Oct 2013 06:17 AM PDT

Results from a large-scale Phase 3 trial show that the most clinically advanced malaria vaccine candidate, RTS,S, continued to protect young children and infants from clinical malaria up to 18 months after vaccination. Based on these data, scientists now intend to submit, in 2014, a regulatory application to the European Medicines Agency.

Babies learn to anticipate touch in the womb

Posted: 08 Oct 2013 06:17 AM PDT

Babies learn how to anticipate touch while in the womb, according to new research. Using 4-D scans psychologists found, for the first time, that fetuses were able to predict, rather than react to, their own hand movements towards their mouths as they entered the later stages of gestation compared to earlier in a pregnancy.

Rural land use policies curb wildfire risks -- to a point

Posted: 08 Oct 2013 06:17 AM PDT

Using Montana's fast-growing Flathead County as a template, a Washington State University researcher has found that moderately restrictive land-use policies can significantly curb the potential damage of rural wildfires. However, highly restrictive planning laws will not do much more.

'Brain training' may boost working memory, but not intelligence

Posted: 08 Oct 2013 06:17 AM PDT

Brain training games, apps, and websites are popular and it's not hard to see why -- who wouldn't want to give their mental abilities a boost? New research suggests that brain training programs might strengthen your ability to hold information in mind, but they won't bring any benefits to the kind of intelligence that helps you reason and solve problems.

More than 500 million people might face increasing water scarcity

Posted: 08 Oct 2013 06:17 AM PDT

Both freshwater availability for many millions of people and the stability of ecosystems such as the Siberian tundra or Indian grasslands are put at risk by climate change. Even if global warming is limited to two degrees above pre-industrial levels, 500 million people could be subject to increased water scarcity -- while this number would grow by a further 50 percent if greenhouse-gas emissions are not cut soon. At five degrees global warming almost all ice-free land might be affected by ecosystem change.

First ever evidence of a comet striking Earth

Posted: 08 Oct 2013 06:15 AM PDT

The first ever evidence of a comet entering Earth's atmosphere and exploding, raining down a shock wave of fire which obliterated every life form in its path, has been discovered by a team of South African scientists and international collaborators.

Liquorice alleviates troublesome symptoms following intubation

Posted: 08 Oct 2013 06:14 AM PDT

In Traditional Chinese Medicine, liquorice is regarded as a "panacea". A recent study has now, for the first time, scientifically confirmed the healing properties of this natural substance. Researchers investigated patients who require a particularly thick tube (known as a double-lumen tube) following lung surgery and who consequently suffer frequent sore throats, hoarseness and coughs. The prescription of liquorice markedly reduced the frequency of post-operative symptoms. Even more importantly, patients were extremely happy and had less medical complaints following surgery.

Unexpected genomic change through 400 years of French-Canadian history

Posted: 08 Oct 2013 06:12 AM PDT

Researchers have discovered that the genomic signature inherited by today's 6 million French Canadians from the first 8,500 French settlers who colonized New France some 400 years ago has gone through an unparalleled change in human history, in a remarkably short timescale. This unique signature could serve as an ideal model to study the effect of demographic processes on human genetic diversity, including the identification of possibly damaging mutations associated with population-specific diseases.

Terrestrial ecosystems at risk of major shifts as temperatures increase

Posted: 08 Oct 2013 06:12 AM PDT

Over 80% of the world's ice-free land is at risk of profound ecosystem transformation by 2100, a new study reveals. "Essentially, we would be leaving the world as we know it," says a researcher who studied the critical impacts of climate change on landscapes.

2013 Nobel Prize in Physics: Higgs particle and the origin of mass

Posted: 08 Oct 2013 04:58 AM PDT

The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics for 2013 to François Englert and Peter W. Higgs "for the theoretical discovery of a mechanism that contributes to our understanding of the origin of mass of subatomic particles, and which recently was confirmed through the discovery of the predicted fundamental particle, by the ATLAS and CMS experiments at CERN's Large Hadron Collider."

3-D printed microscopic cages confine bacteria in tiny zoos for the study of infections

Posted: 07 Oct 2013 12:17 PM PDT

Researchers have used a novel 3-D printing technology to build homes for bacteria at a microscopic level. Their method uses a laser to construct protein "cages" around bacteria in gelatin. The resulting structures can be of almost any shape or size, and can be moved around in relationship to other structures containing bacterial microcommunities.

Explosive dynamic behavior on Twitter and in the financial market

Posted: 07 Oct 2013 12:17 PM PDT

By analysing data from the social networking service, Twitter, and stock trading in the financial market, researchers have shown that events in society bring rise to common behavior among large groups of people who do not otherwise know each other. The analysis shows that there are common features in user activity on Twitter and in stock market transactions in the financial market.

New more effective antimicrobials might rise from old

Posted: 07 Oct 2013 12:16 PM PDT

By tinkering with their chemical structures, researchers have essentially re-invented a class of popular antimicrobial drugs, restoring and in some cases, expanding or improving, their effectiveness against drug-resistant pathogens in animal models.

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