Monday, December 14, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Universal quantum mechanism: Physicists find reappearing quantum trios

Posted: 14 Dec 2009 11:00 AM PST

Using atoms at temperatures colder than deep space, physicists have delivered overwhelming proof for a 1970 theory that was largely scoffed at when it first appeared. They offers experimental proof of a universal quantum mechanism that causes trios of particles to appear and reappear at higher energy levels in an infinite progression. The triplets, or trimers, form in special cases where pairs cannot.

How the autistic brain distinguishes oneself from others

Posted: 14 Dec 2009 11:00 AM PST

Scientists have discovered that the brains of individuals with autism are less active when engaged in self-reflective thought. The study provides new evidence for the neural correlates of self-awareness and a new window into understanding social difficulties in autism spectrum conditions.

New biosensors reveal workings of anti-psychotic drugs in the living brain

Posted: 14 Dec 2009 11:00 AM PST

Scientists have resolved a question about how a popular class of drugs used to treat schizophrenia works using biosensors that reveal previously hidden components of chemical communication in the brain.

Amount of gene surplus determines severity of mental retardation in males, researchers find

Posted: 14 Dec 2009 11:00 AM PST

Researchers have discovered a new explanation for differences in the severity of mental illness in males. The more excess copies of a certain gene, the more serious the handicap. The genetic defect is situated on the X-chromosome; and it is suspected that it is the amount of copies of the GDI1 gene that is responsible.

3-D microchips for more powerful and environmentally friendly computers

Posted: 14 Dec 2009 11:00 AM PST

Scientists are working on 3-D microprocessors cooled from the inside through channels with a liquid coolant. The method is expected to boost the performance of future computers.

Are angry women more like men?

Posted: 14 Dec 2009 11:00 AM PST

"Why is it that men can be bastards and women must wear pearls and smile?" wrote author Lynn Hecht Schafran. The answer, according to a new article may lie in our interpretation of facial expressions.

Magnetic power revealed in gamma-ray burst jet

Posted: 14 Dec 2009 08:00 AM PST

A specialized camera on a telescope operated by UK astronomers has made the first measurement of magnetic fields in the afterglow of a gamma-ray burst.

New genes for lung disease discovered

Posted: 14 Dec 2009 08:00 AM PST

Scientists have discovered five genetic variants that are associated with the health of the human lung. The research by an international consortium of 96 scientists from 63 centers in Europe and Australia sheds new light on the molecular basis of lung diseases.

Understanding apples' ancestors

Posted: 14 Dec 2009 08:00 AM PST

A species of wild apples that could be an ancestor of today's domesticated apples are native to the Middle East and Central Asia. A new study comparing the diversity of recently acquired wild apple varieties from Georgia and Armenia with previously collected varieties originating in Russia and Turkey narrows the large population and establishes a core collection.

Moderate weight loss in obese people improves heart function

Posted: 14 Dec 2009 08:00 AM PST

Obese patients who lost a moderate amount of weight by eating less and exercising more improved their cardiovascular health, says a new study.

Newly identified enzymes help plants sense elevated CO<sub>2</sub> and could lead to water-wise crops

Posted: 14 Dec 2009 08:00 AM PST

Plants take in the carbon dioxide they need for photosynthesis through microscopic breathing pores in the surface of leaves. But for each molecule of the gas gained, they lose hundreds of water molecules through these same openings. The pores can tighten to save water when carbon dioxide is abundant, but scientists didn't know how that worked. Now biologists have identified protein sensors that react with CO2 to close the pores.

Genetic ancestry highly correlated with ethnic and linguistic groups in Asia

Posted: 14 Dec 2009 08:00 AM PST

Several genome-wide studies of human genetic diversity have been conducted on European populations. Now, for the first time, these studies have been extended to 73 Southeast Asian (SEA) and East Asian (EA) populations. In a new paper, over 90 scientists from the Human Genome Organization's Pan-Asian SNP Consortium report that their study conducted within and between different populations in Asia continent showed that genetic ancestry was highly correlated with ethnic and linguistic groups.

Black hole found to be much closer to Earth than previously thought

Posted: 14 Dec 2009 05:00 AM PST

Astronomers have accurately measured the distance from Earth to a black hole for the first time. Without needing to rely on mathematical models the astronomers came up with a distance of 7800 light years, much closer than had been assumed until now. The researchers achieved this breakthrough by measuring the radio emissions from the black hole and its associated dying star.

Anti-estrogens may offer protection against lung cancer mortality

Posted: 14 Dec 2009 05:00 AM PST

Anti-estrogens as therapy for breast cancer may also reduce the risk of death from lung cancer, according to a new study.

List of 'unsung' wildlife affected by climate change released

Posted: 14 Dec 2009 05:00 AM PST

The Wildlife Conservation Society has released a list of animals facing new impacts by climate change, some in strange and unexpected ways.

Type 2 diabetes gene predisposes children to obesity, study finds

Posted: 14 Dec 2009 05:00 AM PST

Pediatric researchers have found that a gene already implicated in the development of type 2 diabetes in adults also raises the risk of being overweight during childhood. The finding sheds light on the genetic origins of diabetes and may present an avenue for developing drugs to counteract the disease, which has been on the upswing in childhood and adolescence.

New approach to emissions makes climate and air quality models more accurate, major study finds

Posted: 14 Dec 2009 05:00 AM PST

It's no secret that the emissions leaving a car tailpipe or factory smokestack affect climate and air quality. Even trees release chemicals that influence the atmosphere. But until now, scientists have struggled to know where these organic molecules go and what happens to them once they leave their source, leading to models for predicting climate and air quality that are incomplete or less than accurate.

Several serious illnesses missing from US vaccination plan

Posted: 14 Dec 2009 05:00 AM PST

While vaccines help prevent many diseases in the United States, the nation lacks immunization protection against several serious illnesses, according to a new report.

Introns -- nonsense DNA -- may be more important to evolution of genomes than thought

Posted: 14 Dec 2009 02:00 AM PST

The sequences of nonsense DNA that interrupt genes could be far more important to the evolution of genomes than previously thought, according to researchers. Their study of the model organism Daphnia pulex (water flea) is the first to demonstrate the colonization of a single lineage by "introns," as the interrupting sequences are known.

Novel detection method unmasks circulating breast cancer cells

Posted: 14 Dec 2009 02:00 AM PST

Circulating metastatic breast cancer cells can lose their epithelial receptors, a process that enables them to travel through the bloodstream undetected, according to new research.

Can Biodiversity Persist In The Face Of Climate Change?

Posted: 14 Dec 2009 02:00 AM PST

Predictions made over the last decade about the impacts of climate change on biodiversity may be exaggerated, according to new research.

Urine test for pediatric obstructive sleep apnea possible

Posted: 14 Dec 2009 02:00 AM PST

Researchers have discovered a technique that is able to determine whether a child has obstructive sleep apnea or habitual snoring by screening their urine.

Scientists crack mystery of protein's dual function

Posted: 14 Dec 2009 02:00 AM PST

Researchers have solved a 10-year-old mystery of how a single protein from an ancient family of enzymes can have two completely distinct roles in the body. In addition to providing guidance for understanding other molecules in the family, the research supplies a theoretical underpinning for the protein's possible use for combating diseases including cancer and macular degeneration.

Deaths from opioid use have doubled; five-fold increase in oxycodone deaths

Posted: 14 Dec 2009 02:00 AM PST

Deaths from opioid use in Ontario, Canada, have doubled since 1991 and the addition of long-acting oxycodone to the drug formulary was associated with a 5-fold increase in oxycodone-related deaths, a new study finds. Most of these additional deaths were accidental.

Nanosensors used to measure cancer biomarkers in blood for first time

Posted: 13 Dec 2009 11:00 PM PST

Researchers have used nanosensors to measure cancer biomarkers in whole blood for the first time. Their findings could dramatically simplify the way physicians test for biomarkers of cancer and other diseases.

How gene action may lead to diabetes prevention, cure

Posted: 13 Dec 2009 11:00 PM PST

A gene commonly studied by cancer researchers has been linked to the metabolic inflammation that leads to diabetes. Understanding how the gene works means scientists may be closer to finding ways to prevent or cure diabetes.

Innovative Plan To Save Rainforest, Reduce Greenhouse Gas Emissions

Posted: 13 Dec 2009 11:00 PM PST

An innovative proposal by the Ecuadorian government to protect an untouched, oil rich region of Amazon rainforest is a precedent-setting and potentially economically viable approach, says a team of environmental researchers.

New understanding of how to prevent destruction of a tumor suppressor

Posted: 13 Dec 2009 11:00 PM PST

Researchers have determined how the protein Mdm2, which is elevated in late-stage cancers, disables genes that suppress the growth of tumors. The finding may lead to development of new drugs for late stage breast cancer and other difficult to treat malignancies.

More 20 mph zones in London would prevent 100 killed or seriously injured casualties each year

Posted: 13 Dec 2009 11:00 PM PST

Traffic speed zones with a limit of 20 miles per hour reduce casualties by 41.9 percent with the greatest reduction in child casualties, according to new British research.

Health effects of low-intensity warfare studied

Posted: 13 Dec 2009 11:00 PM PST

Anthropologists have established a conceptual framework for measuring the health as well as the social impacts of violence in northern Kenya. The study has worldwide implications, as violent conflict is a leading cause of morbidity and mortality.

No comments: