Sunday, July 12, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Monkeys And Humans Use Parallel Mechanism To Recognize Faces

Posted: 12 Jul 2009 02:00 PM PDT

Researchers have demonstrated for the first time rhesus monkeys and humans share a specific perceptual mechanism, configural perception, for discriminating among the numerous faces they encounter daily. The study provides insight into the evolution of the critical human social skill of facial recognition, which enables us to form relationships and interact appropriately with others. This study with rhesus monkeys suggests the human ability to distinguish faces is 30+ million years old.

Diets Bad For The Teeth Are Also Bad For The Body

Posted: 12 Jul 2009 02:00 PM PDT

Dental disease reveals very early on that eating habits are putting a person at risk for systemic disease. Because chronic medical disease takes decades to become severe enough to be detected in screening tests, dental diseases may provide plenty of lead-time to change harmful eating habits and thereby decrease the risk of developing the other diseases of civilization.

Seals Quickly Respond To Gain And Loss Of Habitat Under Climate Change

Posted: 12 Jul 2009 02:00 PM PDT

Southern elephant seals responded rapidly to climate and habitat change and established a new breeding site thousands of kilometers from existing breeding grounds, according to new research. Scientists found that when the Antarctic ice sheets of the Ross Sea Embayment retreated in the Holocene period 8,000 years ago, elephant seals, Mirounga leonina, adopted the emergent habitat and established a new population which flourished.

Scientists Rule Out Link Between Specific Antibodies, Such As Folic Acid related Auto-antibodies, And Spina Bifida

Posted: 12 Jul 2009 02:00 PM PDT

New research shows that a woman's risk of having a child with a neural tube defect, such as spina bifida, is not linked to folic acid related auto-antibodies.

Sound Imaging: Clever Acoustics Help Blind People See The World

Posted: 12 Jul 2009 02:00 PM PDT

Video from portable cameras is analyzed to calculate the distance of obstacles and predict the movements of people and cars. This information is then transformed and relayed to a blind person as a three-dimensional 'picture' of sound.

Wrong Dose Of Heart Meds Too Frequent In Children

Posted: 12 Jul 2009 02:00 PM PDT

Infants and young children treated with heart drugs get the wrong dose or end up on the wrong end of medication errors more often than older children, according to new research.

One-finger Exercise Reveals Unexpected Limits To Dexterity

Posted: 12 Jul 2009 08:00 AM PDT

"Push your finger as hard as you can against the surface. Now as hard as you can but move it slowly -- follow the ticking clock. Now faster. Now faster." These were the commands for volunteers in a simple experiment that casts doubt on old ideas about mechanisms to control hand muscles. Complete understanding of the result may help explain why manual dexterity is so vulnerable to aging and disease, and even help design more versatile robotic graspers.

Elevated Insulin Linked To Increased Breast Cancer Risk

Posted: 12 Jul 2009 08:00 AM PDT

Elevated insulin levels in the blood appear to raise the risk of breast cancer in post-menopausal women, according to new research.

Structural Biology Scores With Protein Snapshot

Posted: 12 Jul 2009 08:00 AM PDT

Investigators have used nuclear magnetic resonance methods to determine the structure of the largest membrane-spanning protein to date. The group's ability to determine the NMR structure of the bacterial protein diacylglycerol kinase, reported in the journal Science, suggests that similar methods can now be used to study the structures of other membrane proteins.

Novel Genetic Finding Offers New Avenue For Future Crohn's Disease Treatment

Posted: 12 Jul 2009 08:00 AM PDT

Researchers have identified a novel link between ITCH, a gene known to regulate inflammation in the body and NOD2, a gene which causes the majority of genetic Crohn's Disease diagnoses. ITCH, when malfunctioning, causes widespread inflammatory diseases, including inflammatory bowel disease, gastritis, uncontrolled skin inflammation, and pulmonary pneumonitis. Researchers found that ITCH also influences NOD2-induced inflammation.

Exploring How The Body Adapts To Exercise At Altitude: Hypoxia Affects Muscle And Nerve Responses

Posted: 12 Jul 2009 08:00 AM PDT

Exercise requires the integrated activity of every organ and tissue in the body, and understanding how these respond to the decreased oxygen levels present at moderate to high altitude is the focus of the current special issue of High Altitude Medicine & Biology.

Quit Smoking: Pre-cessation Patch Doubles Quit Success Rate

Posted: 12 Jul 2009 08:00 AM PDT

Using a nicotine patch before quitting smoking can double success rates, according to new research. Researchers say their latest data suggest changes should be made to nicotine patch labeling.

Declining Aral Sea: Satellite Images Highlight Dramatic Retreat

Posted: 12 Jul 2009 02:00 AM PDT

New Envisat images highlight the dramatic retreat of the Aral Sea's shoreline from 2006 to 2009. The Aral Sea was once the world's fourth-largest inland body of water, but it has been steadily shrinking over the past 50 years since the rivers that fed it were diverted for irrigation projects.

Oxygen Key To 'Cut And Paste' Of Genes

Posted: 12 Jul 2009 02:00 AM PDT

An oxygen-sensitive enzyme has been found to play a key role in how genes create the many different proteins that make up our bodies.

New Theory Gives More Precise Estimates Of Large-scale Biodiversity

Posted: 12 Jul 2009 02:00 AM PDT

The Census Bureau is good at profiling the US population by sampling small groups of people. Biologists, however, lack a good theory of how to estimate the richness of life in large areas like the Amazon from small-plot studies. Ecologists have applied information theory to develop a new and robust theory that does a much better job predicting biodiversity in large biomes and could be a boon to conservation biologists.

Of Yeast And Men: Unraveling The Molecular Mechanisms Of Friedreich's Ataxia

Posted: 12 Jul 2009 02:00 AM PDT

Scientists have created an experimental model that produces large-scale expansion of GAA repeats during DNA replication, which is the cause of Friedreich's Ataxia. With this model, the researchers are able to analyze GAA repeat expansions and then identify cellular proteins that thwarted normal replication and promoted the elongated sequence.

Forest Fire Prevention Efforts Could Lessen Carbon Sequestration, Add To Greenhouse Warming

Posted: 12 Jul 2009 02:00 AM PDT

Widely sought efforts to reduce fuels that increase catastrophic fire in Pacific Northwest forests will be counterproductive to another important societal goal of sequestering carbon to help offset global warming, forestry researchers conclude in a new report.

Positive Emotions Increase Life Satisfaction By Building Resilience

Posted: 12 Jul 2009 02:00 AM PDT

People who seed their life with frequent moments of positive emotions increase their resilience against challenges, according to a new study.

Core Nuclear Pore Elements Likely Shared By All Eukaryotes

Posted: 10 Jul 2009 09:00 PM PDT

For perhaps 1.8 billion years after life first emerged on Earth, a sort of evolutionary writer's block stalled the development of organisms more complicated than single cells. Then, a burst of experimental creativity about 1.7 billion years ago brought the cell nucleus onto the scene, stashing the cell's genetic material inside a protective inner membrane and setting the stage for the evolution of more sophisticated creatures from yeast, say, to plants and human beings. Now research shows that one of the most basic design principles of this new eukaryotic life-form -- the gatekeeper to the cell nucleus known as the nuclear pore complex -- is largely shared across the most distantly related eukaryotes.

Study Using Structural MRI May Help Accurately Diagnose Dementia Patients

Posted: 10 Jul 2009 09:00 PM PDT

A new study may help physicians differentially diagnose three common neurodegenerative disorders in the future.

Anterior Cruciate Ligament Reconstruction Doesn't Harm NFL Career Length, Study Suggests

Posted: 10 Jul 2009 09:00 PM PDT

Knee injuries are a common problem in collegiate and professional football, often hindering an individual's career length and future. A new study suggests that anterior cruciate ligament reconstruction vs. a simple meniscus repair may predict a longer professional career in those that have suffered knee injuries.

Easy Strength Training Exercise May Help Treat Tennis Elbow, Study Shows

Posted: 10 Jul 2009 09:00 PM PDT

People with pain in the elbow or forearm from playing sports or just from common everyday activities, might be able to use a simple bar and strengthening exercise to alleviate pain.

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