Friday, October 16, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Catching The Interstellar Wind: Spacecraft Finds Ribbon-like Structure At Edge Of Heliosphere

Posted: 16 Oct 2009 11:00 AM PDT

NASA's Interstellar Boundary Explorer, or IBEX, spacecraft has made it possible for scientists to construct the first comprehensive sky map of our solar system and its location in the Milky Way galaxy. The new view will change the way researchers view and study the interaction between our galaxy and sun. Results include the discovery of a narrow ribbon of bright details or emissions not resembling any of the current theoretical models of the interstellar boundary region.

'ECG For The Mind' Could Diagnose Depression In An Hour

Posted: 16 Oct 2009 11:00 AM PDT

An innovative diagnostic technique invented by an Australian researcher could dramatically fast-track the detection of mental and neurological illnesses.

Magnetic Leaves Reveal Most Polluted Byways

Posted: 16 Oct 2009 11:00 AM PDT

Tree leaves may be powerful tools for monitoring air quality and planning biking routes and walking paths, suggests a new study. Leaves along bus routes were up to 10 times more magnetic than leaves on quieter streets, the study found.

MRI Abundance May Lead To Excess In Back Surgeries, Study Shows

Posted: 16 Oct 2009 11:00 AM PDT

Patients reporting new low-back pain are more likely to undergo surgery if treated in an area with a higher-than-average concentration of magnetic resonance imaging machines, according to new research.

Cell's Powerhouses Dismantled: Complete Inventory Of All Proteins In Mitochondria

Posted: 16 Oct 2009 11:00 AM PDT

All of life is founded on the interactions of millions of proteins. These are the building blocks for cells and form the molecular mechanisms of life. The problem is that proteins are extremely difficult to study, particularly because there are so many of them and they appear in all sizes and weights. Now, researchers have made a breakthrough in protein research -- making virtually the complete inventory of all the proteins in the mitochondria, the energy producers found in every cell.

Is The Person Next To You Washing Their Hands With Soap?

Posted: 16 Oct 2009 11:00 AM PDT

People are more likely to wash their hands when they have been shamed into it, according to a new study.

Scientists Give Flies False Memories

Posted: 16 Oct 2009 08:00 AM PDT

By directly manipulating the activity of individual neurons, scientists have given flies memories of a bad experience they never really had, according to a new report.

Skin Cells May Provide Early Warning For Cancer Risk Elsewhere In Body

Posted: 16 Oct 2009 08:00 AM PDT

If susceptibility to cancer is the result of inherited genetic mutations, then DNA in all the body's cells should have these mutations. A cell biologist argues that, since skin cells are easy to culture, it may be possible to observe the behavior of skin cells in a Petri dish and detect those mutations involving growth that increase our cancer risk.

Golgi Apparatus: Simple Explanation For How Baffling Structure Works

Posted: 16 Oct 2009 08:00 AM PDT

Researchers have provided a surprisingly simple explanation for the mechanism and features of the "Golgi apparatus" -- a structure that has baffled generations of scientists. The new model developed by scientists suggests that the Golgi's unusual shape is a direct consequence of the way it works.

Breast Tenderness During Hormone Replacement Therapy Linked To Elevated Cancer Risk

Posted: 16 Oct 2009 08:00 AM PDT

Women who developed new-onset breast tenderness after starting estrogen plus progestin hormone replacement therapy were at significantly higher risk for developing breast cancer than women on the combination therapy who didn't experience such tenderness,

1,001 Cameras See In Gigapixels

Posted: 16 Oct 2009 08:00 AM PDT

As manufacturers of consumer digital cameras compete in increments, adding one or two megapixels to their latest models, one researcher is thinking much bigger. Working with the U.S. Department of Defense's Defense Advanced Research Projects Agency, he is designing and building a camera that could achieve resolutions 1,000 or even 1 million times greater than the technology on the market today.

Misuse Of Antibiotics Not The Only Cause Of Resistance, Says Report

Posted: 16 Oct 2009 08:00 AM PDT

The perception that antibiotic resistance is primarily the undesirable consequence of antibiotic abuse or misuse is a view that is simplistic and inaccurate, according to a recent report by the American Academy of Microbiology.

New Light On Nature Of Broca's Area: Rare Procedure Documents How Human Brain Computes Language

Posted: 16 Oct 2009 05:00 AM PDT

Researchers have made a significant breakthrough in explaining gaps in our understanding of human brain function. The study provides a picture of language processing in the brain with unprecedented clarity.

Promising Therapeutic Target For Central Nervous System Injuries Identified

Posted: 16 Oct 2009 05:00 AM PDT

Researchers have identified a promising therapeutic target for central nervous system injuries. Following such an injury, scar tissue releases molecules that keep neurons from passing, so they cannot restore motor and sensory function. Researchers have identified where these inhibitory molecules bind to the surface of neurons, exposing a novel therapeutic target.

Technology Brings New Insights To One Of The Oldest Middle Eastern Languages Still Spoken

Posted: 16 Oct 2009 05:00 AM PDT

New technologies and academic collaborations are helping scholars analyze hundreds of ancient documents in Aramaic, one of the Middle East's oldest continuously spoken and written languages.

Mechanism Of Gene Linked To Autism, Schizophrenia Pinpointed

Posted: 16 Oct 2009 05:00 AM PDT

A researcher has pinpointed the mechanism by which a gene associated with both autism and schizophrenia influences behavior in mice.

Laser Fusion And Exawatt Lasers

Posted: 16 Oct 2009 05:00 AM PDT

In the recent past, producing lasers with terawatt (a trillion watts) beams was impressive. Now petawatt (a thousand trillion watts, or 10^15 watts) lasers are the forefront of laser research. Some labs are even undertaking work toward achieving exawatt (10^18 watts) levels.

News In Red And Blue: Messages About Social Factors And Health Can Backfire

Posted: 16 Oct 2009 05:00 AM PDT

A new study may give clues to why Republicans and Democrats disagree on nearly every aspect of health policies and reform. When looking at social factors that impact health, such as lack of neighborhood grocery stores or safe places to exercises, Republicans became less supportive of public health policies to prevent diabetes. The social factors increased Democrats' support. The findings show the same information can be polarizing.

Scientists Discover Protein Receptor For Carbonation Taste

Posted: 16 Oct 2009 02:00 AM PDT

Scientists report they have discovered the protein receptor for carbonatoin in mice, whose sense of taste closely resembles that of humans.

Scientists Encouraged By New Mouse Model's Similarities To Human Amyotrophic Lateral Sclerosis

Posted: 16 Oct 2009 02:00 AM PDT

A new mouse model of amyotrophic lateral sclerosis closely resembles humans with the paralyzing disorder, researchers report. "As far as we know, this is the first mouse model that recapitulates "typical" ALS to be produced in more than a decade," says the senior author.

Hyper-SAGE Boosts Remote MRI Sensitivity

Posted: 16 Oct 2009 02:00 AM PDT

Hyper-SAGE can increase the strength of a remote MRI or NMR signal 10,000 times, making it possible to detect ultra-low concentrations of clincal and environmental targets. This enhanced sensitivity presents a path to the molecular imaging of clinical targets such as lung and other cancers.

Today's Type 1 Diabetes Patients Enjoy Better Vision Than Those In Decades Past

Posted: 16 Oct 2009 02:00 AM PDT

People diagnosed with type 1 diabetes (T1D) in recent years are less likely to develop diabetes-related vision loss than those diagnosed in earlier years, says a new study. Forecasts of visual impairment prevalence in T1D patients may need to be amended, the researchers suggest, since current predictions assume that the earlier incidence rates will continue.

Rocket Design Fires International Interest

Posted: 16 Oct 2009 02:00 AM PDT

A UK engineering student has designed a motor that could one day help transform rocket design.

Paradigm Shift Needed To Combat Drug Resistance

Posted: 16 Oct 2009 02:00 AM PDT

When people travel, bacteria and other infectious agents travel with them. As about a billion people cross international borders each year, many more billions of the bugs come along for the ride. However, the trend is contributing to substantial domestic and international public health threats and risks, as seen with SARS and more recently with the H1N1 flu virus. An infectious disease expert explores the relationship between population mobility, globalization and antimicrobial drug resistance in a new research article.

Tiniest Test Tube Experiment Shows Reaction Of Melting Materials At Nano Scale

Posted: 15 Oct 2009 11:00 PM PDT

Researchers have conducted a basic chemistry experiment in what is perhaps the world's smallest test tube, measuring a thousandth the diameter of a human hair.

Creating Less Toxic Anti-HIV Drugs: Discovery Of Enzyme Structure Points The Way

Posted: 15 Oct 2009 11:00 PM PDT

By discovering the atomic structure of a key human enzyme, researchers have pointed the way toward designing anti-HIV drugs with far less toxic side effects.

Secrets Of The Lake Floor Of Lake Maggiore

Posted: 15 Oct 2009 11:00 PM PDT

Topographical surveys of Swiss lake floors have never been performed in such detail before now. With the aid of a sophisticated sonar system, Swiss researchers can produce three-dimensional images which show channels and other structures at the bottom of Lake Maggiore with centimetre-scale accuracy.

Immune Cells Predict Outcome Of West Nile Virus Infection

Posted: 15 Oct 2009 11:00 PM PDT

Infection with West Nile virus (WNV) causes no symptoms in most people. However, it can cause fever, meningitis, and/or encephalitis. Researchers now report that levels of immune cells known as Tregs (immune cells that suppress the function of other immune cells) in the blood of a human or mouse infected with WNV predict whether the person or mouse will have symptoms of infection.

Sustainable Architecture: Setting Sail In An Ecological 'Earthship'

Posted: 15 Oct 2009 11:00 PM PDT

Could sustainable architecture address pollution, climate change and resource depletion by helping us build self-sufficient, off-grid, housing from "waste," including vehicle tires and metal drinks containers? That's the question researchers in Australia are trying to answer.

Deaths Of Local Soldiers Overseas Matter In Shaping War Opinion At Home

Posted: 15 Oct 2009 11:00 PM PDT

Americans think locally when they consider whether the loss of US troops overseas warrants troop withdrawals, a new nationwide study suggests. Researchers found that people were more likely to support withdrawing US troops from Iraq if one or more soldiers from their home state were killed there within the past two to three weeks.

Gene Mutation May Reveal Clues For Treating Lung Diseases

Posted: 15 Oct 2009 08:00 PM PDT

A genetic mutation found in four children born with multiple abnormalities may provide insight into potential treatments for newborn lung distress and chronic obstructive pulmonary disease.

Increased Success A 'Virtual' Certainty For Rugby Players

Posted: 15 Oct 2009 08:00 PM PDT

Rugby players worldwide could benefit from a new virtual reality training program. "The advantages of this technology are that unlike playing a video game on a normal desktop computer, the rugby player or athlete is totally immersed in a realistic simulated environment," said the lead researcher.

Improved Diet And Exercise Alone Unlikely To Cure Obstructive Sleep Apnea In Obese Patients

Posted: 15 Oct 2009 08:00 PM PDT

A study finds that while a strict diet and exercise program may benefit obese patients with mild to moderate obstructive sleep apnea, it is unlikely to eliminate the condition.

Solar Cell Efficiency Increased By Incorporating Ionic Salts

Posted: 15 Oct 2009 08:00 PM PDT

Scientists in Spain are working on optimizing a type of photovoltaic cell (Grätzel cell) that artificially mimics photosynthesis. Grätzel cells are photovoltaic devices that take advantage of the interaction of a structured semiconductor less than a nanometer in size and an organic dye that acts as a solar collector.

Managers' Hiring Practices Vary By Race And Ethnicity, Study Finds

Posted: 15 Oct 2009 08:00 PM PDT

Does the race of a hiring manager influence who gets hired? A new study suggests it does. White, Asian and Hispanic managers tend to hire more whites and fewer blacks than black managers do, the study finds.

Survey Data Supports Rapid Ice Loss: Largely Open Arctic Seas In Summer Within 10 Years

Posted: 15 Oct 2009 05:00 PM PDT

The Arctic Ocean sea ice is thinning, new data show, supporting the emerging thinking that the Ocean will be largely ice-free during summer within a decade.

Treatment Not Testicular Cancer Poses Greatest Risk To Survivors' Long-term Health

Posted: 15 Oct 2009 05:00 PM PDT

Testicular cancer survivors can face an increased risk of long-term illness, not because of the malignancy, but the highly effective treatment they receive. As many as a quarter of survivors develop long-term neurological, hearing and circulation problems. And they are twice as likely to develop a secondary cancer. On a more positive note, up to 80 percent who attempt to become fathers after treatment are successful.

Some Color Shades Offer Better Protection Against Sun’s Ultraviolet Rays

Posted: 15 Oct 2009 05:00 PM PDT

Economy-minded consumers who want protection from the sun's harmful ultraviolet rays -- but rather not pay premium prices for sun-protective clothing -- should think blue and red, rather than yellow. Scientists are reporting that the same cotton fabric dyed deep blue or red provide greater UV protection than shades of yellow.

Fighting Flu: Stricter Hand Hygiene In Schools Only A Short-term Measure

Posted: 15 Oct 2009 05:00 PM PDT

Increased hand hygiene in primary schools is only a short-term measure in preventing infections such as H1N1 from spreading. Researchers have found stricter hand hygiene practices are difficult to maintain in a school setting.

Extreme Genetic Variability In Malaria Parasite Found

Posted: 15 Oct 2009 05:00 PM PDT

Researchers have charted the extreme genetic differences that occur in the most dangerous malaria parasite in the world. The study suggests that developing a broadly protective vaccine for malaria may be challenging because the parasite's genetic makeup is so variable. Drug-resistant malaria has been a major barrier to treatment, and this study suggests that "vaccine-resistant" malaria may also become a problem.

Bosses Who Feel Inadequate Are More Likely To Bully

Posted: 15 Oct 2009 05:00 PM PDT

Bosses who feel incompetent are more likely to bully their employees, according to new research. But flattery, the study warns, may not be the best way to soothe the savage boss.

Bug Barcode Readers Hold Out Promise Of Universal Vaccines

Posted: 15 Oct 2009 02:00 PM PDT

Veterinary scientists have made a discovery that promises to deliver a new approach to fast development of cheap vaccines that are effective in all mammals -- not just humans or another particular species.

Interactions Between Massless Particles May Lead To Speedy, Powerful Electronic Devices

Posted: 15 Oct 2009 02:00 PM PDT

Researchers have discovered novel electronic properties in two-dimensional sheets of carbon atoms called graphene that could one day be the heart of speedy and powerful electronic devices. The new findings, previously considered possible by physicists but only now being seen in the laboratory, show that electrons in graphene can interact strongly with each other. The physicists discovered that the fractional quantum Hall effect in graphene is even more robust than in standard semiconductors.

Suffering Caused By Dialysis For Nursing Home Seniors May Outweigh Its Benefits, Researchers Find

Posted: 15 Oct 2009 02:00 PM PDT

Older Americans living in nursing homes experience a significant decline in their ability to perform simple daily tasks -- such as feeding themselves, getting dressed or brushing their teeth -- after starting dialysis, say researchers at the Stanford University School of Medicine.

Satellite Data Look Behind The Scenes Of Deadly Earthquake

Posted: 15 Oct 2009 02:00 PM PDT

Using satellite radar data and GPS measurements, Chinese researchers have explained the exceptional geological events leading to the 2008 Wenchuan Earthquake that killed nearly 90,000 people in China's Sichuan Province.

Popular Antidepressant Associated With A Dramatic Increase In Suicidal Thoughts Amongst Men, Study Finds

Posted: 15 Oct 2009 02:00 PM PDT

Nortriptyline has been found to cause a tenfold increase in suicidal thoughts in men when compared to its competitor escitalopram, according to a new study.

No comments: