السبت، 17 نوفمبر 2012

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News

Antenna-on-a-chip rips the light fantastic

Posted: 16 Nov 2012 01:11 PM PST

A lab produces a micron-scale spatial light modulator like those used in sensing and imaging devices, but with the potential to run orders of magnitude faster.

Nano insights could lead to improved nuclear reactors

Posted: 16 Nov 2012 01:10 PM PST

In order to build the next generation of nuclear reactors, materials scientists are trying to unlock the secrets of certain materials that are radiation-damage tolerant. Now researchers have brought new understanding to one of those secrets -- how the interfaces between two carefully selected metals can absorb, or heal, radiation damage.

Bad air means bad news for seniors' brainpower

Posted: 16 Nov 2012 01:10 PM PST

Living in areas of high air pollution can lead to decreased cognitive function in older adults, according to new research.

Himalayan glaciers will shrink by almost 10 percent, even if temperatures hold steady

Posted: 16 Nov 2012 09:46 AM PST

If Bhutan's climate did not warm, glaciers in the monsoonal Himalayas would still shrink by almost 10 percent within the next few decades. What's more, the amount of melt water coming off these glaciers could drop by 30 percent.

Pursuing problematic polymers

Posted: 16 Nov 2012 09:46 AM PST

Polymers, in everything from shopping bags to ski boots, make our material world what it is today. Researchers are working to understand their structure and predict their behavior.

Clocks are ticking and climate is changing: Increasing plant productivity in a changing climate

Posted: 16 Nov 2012 09:46 AM PST

Scientists are looking to cellular biological clocks as a target for genetic modification for increasing plant productivity.

Clues to cause of kids' brain tumors

Posted: 16 Nov 2012 06:12 AM PST

Insights from a genetic condition that causes brain cancer are helping scientists better understand the most common type of brain tumor in children.

Fetus suffers when mother lacks vitamin C

Posted: 16 Nov 2012 05:56 AM PST

Maternal vitamin C deficiency during pregnancy can have serious consequences for the fetal brain. And once brain damage has occurred, it cannot be reversed by vitamin C supplements after birth.

Melt water on Mars could sustain life, new research suggests

Posted: 16 Nov 2012 05:56 AM PST

Near surface water has shaped the landscape of Mars. Areas of the planet's northern and southern hemispheres have alternately thawed and frozen in recent geologic history and comprise striking similarities to the landscape of Svalbard. This suggests that water has played a more extensive role than previously envisioned, and that environments capable of sustaining life could exist, according to new research.

Beating the dark side of quantum computing

Posted: 16 Nov 2012 05:56 AM PST

A future quantum computer will be able to carry out calculations billions of times faster than even today's most powerful machines by exploit the fact that the tiniest particles, molecules, atoms and subatomic particles can exist in more than one state simultaneously. Scientists and engineers are looking forward to working with such high-power machines but so too are cyber-criminals who will be able to exploit this power in cracking passwords and decrypting secret messages much faster than they can now.

Fear of the dentist is passed on to children by their parents

Posted: 16 Nov 2012 05:55 AM PST

The father acts as an intermediary for dentist fear between both mother and children. Fear of visiting the dentist is a frequent problem in pediatric dentistry. A new study confirms the emotional transmission of dentist fear among family members and analyses the different roles that mothers and fathers might play.

Looking into the future of the North Atlantic fish stocks

Posted: 16 Nov 2012 05:55 AM PST

Scientists are launching a new European initiative for climate service observations and modelling.

Into the magnetic resonance scanner with a cuddly toy

Posted: 16 Nov 2012 05:55 AM PST

Clinicians have been able to show on the basis of a large sample, that it is possible to examine children's heads in the MRI scanner without general anesthesia or other medical sedation. In many cases it was sufficient to prepare the young patients for the examination in an age-appropriate manner in order to take away their fear of the tube. And the results speak for themselves: of the 2461 image sequences recorded with 326 patients, the participating radiologists classified 97 percent as "diagnostically relevant."

Location, location, location: Membrane 'residence' gives proteases novel abilities

Posted: 16 Nov 2012 05:53 AM PST

Scientists have discovered a new mode of action for enzymes immersed in cellular membranes. Their experiments suggest that instead of recognizing and clipping proteins based on sequences of amino acids, these proteases' location within membranes gives them the unique ability to recognize and cut proteins with unstable structures.

Arthritis study reveals why gender bias is all in the genes

Posted: 15 Nov 2012 06:05 PM PST

Researchers have pieced together new genetic clues to the arthritis puzzle in a study that brings potential treatments closer to reality and could also provide insights into why more women than men succumb to the disabling condition.

Video-article shows how to purify magnetic bacteria

Posted: 15 Nov 2012 11:16 AM PST

A new video-article details a procedure to purify and enrich samples of magnetotactic bacteria from aquatic environments. Magnetotactic bacteria are microorganisms, typic.
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