Saturday, October 24, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Seeing Previously Invisible Molecules For The First Time

Posted: 24 Oct 2009 02:00 PM PDT

Chemists have developed a new microscopic technique for seeing, in color, molecules with undetectable fluorescence. The room-temperature technique allows researchers to identify previously unseen molecules in living organisms and offers broad applications in biomedical imaging and research.

Treatment For Epilepsy Is Possible Culprit For Development Of Schizophrenia

Posted: 24 Oct 2009 02:00 PM PDT

Researchers say antiepilectic drug treatments administered when the brain is developing appear to trigger schizophrenia-like behavior in animal models. In humans, having a history of seizures in infancy is a significant risk factor for development of schizophrenia later in life, but it is not known whether the elevated risk is due to seizures themselves, or from side effects antiepileptic drug treatment.

Sensing Disasters From Space: 'Earth Binoculars' See Our Planet Through An Astral Lens

Posted: 24 Oct 2009 02:00 PM PDT

An Israeli researcher's "hyperspectral remote sensor" combines sophisticated sensors in orbit with sensors on the ground and in the air to give advance warnings about contamination, pollution and weather disasters.

Optimized Inhaler Mouthpiece Design Allows For More Effective Drug Delivery

Posted: 24 Oct 2009 02:00 PM PDT

Redesign of mouthpieces for aerosol inhaler devices allows for drugs to be more effectively delivered to the lungs and may allow for a new class of aerosol administered medications.

Galileo's Notebooks May Reveal Secrets Of New Planet

Posted: 24 Oct 2009 02:00 PM PDT

Galileo knew he had discovered a new planet in 1613, 234 years before its official discovery date, according to a new theory.

No Elder Left Behind: Researchers Say Designers Can Help Close Tech Gap

Posted: 24 Oct 2009 02:00 PM PDT

While more older adults than ever are using cell phones and computers, a technology gap still exists that threatens to turn senior citizens into second-class citizens, according to Florida State University researchers.

Female Choice Benefits Mothers More Than Offspring

Posted: 24 Oct 2009 08:00 AM PDT

The great diversity of male sexual traits, ranging from peacock's elaborate train to formidable genitalia of male seed beetles, is the result of female choice. But why do females choose among males? Researchers found no support for the theory that the female choice is connected to "good genes."

General Anesthetics Lead To Learning Disabilities In Animal Models

Posted: 24 Oct 2009 08:00 AM PDT

Blocking the NMDA receptor in immature rats leads to profound, rapid brain injury and disruption of auditory function as the animals mature.

Mechanism For Neuron Self-preservation Discovered

Posted: 24 Oct 2009 08:00 AM PDT

Scientists found that a lipid kinase directs a voltage-gated calcium channel's degradation to save neurons from a lethal dose of overexcitement.

Immune System Quirk Could Lead To Effective Tularemia Vaccine

Posted: 24 Oct 2009 08:00 AM PDT

Immunologists have found a unique quirk in the way the immune system fends off bacteria called Francisella tularensis, which could lead to vaccines that are better able to prevent tularemia infection of the lungs.

Salmon Migration Mystery Explored On Idaho's Clearwater River

Posted: 24 Oct 2009 08:00 AM PDT

Temperature differences and slow-moving water at the confluence of the Clearwater and Snake rivers in Idaho might delay the migration of threatened fall Chinook salmon salmon and allow them to grow larger before reaching the Pacific Ocean. To find out if that's the case, a team of researchers is implanting young fish with acoustic and radio tags to track their movement and using hydrological sensors to measure water temperature and speed.

Cocaine Exposure During Pregnancy Leads To Impulsivity In Male, Not Female, Monkeys

Posted: 24 Oct 2009 08:00 AM PDT

Adult male monkeys exposed to cocaine while in the womb have poor impulse control and may be more vulnerable to drug abuse than female monkeys, even a decade or more after the exposure, according to a new study. The findings could lead to a better understanding of human drug abuse. The study was presented yesterday at the annual Society for Neuroscience meeting in Chicago.

Biologically Active 'Scaffold' May Help Humans Replace Lost Or Missing Bone

Posted: 24 Oct 2009 02:00 AM PDT

Scientists have developed a biologically active "scaffold" made from soluble fibers which may help humans replace lost or missing bone.

Drinking Coffee Slows Progression Of Liver Disease In Chronic Hepatitis C Sufferers, Study Suggests

Posted: 24 Oct 2009 02:00 AM PDT

Patients with chronic hepatitis C and advanced liver disease who drink three or more cups of coffee per day have a 53 percent lower risk of liver disease progression than non-coffee drinkers according to a new study.

Ethiopia's Climate 27 Million Years Ago Had Higher Rainfall, Warmer Soil

Posted: 24 Oct 2009 02:00 AM PDT

Thirty million years ago, Ethiopia had warmer soil temperatures, higher rainfall and different atmospheric circulation patterns than it does today, according to new research of fossil soils found in that central African nation.

Inventive Approach May Improve Enzyme Replacement Therapy For Fabry Disease

Posted: 24 Oct 2009 02:00 AM PDT

A new study uses a creative structure-based remodeling strategy to design a therapeutic protein that exhibits significant advantages over currently available treatments for a rare disease that often leads to cardiac and renal failure. The research offers a new and highly promising candidate for enzyme replacement therapy for Fabry disease.

New Artificial Enzyme Safer For Nature

Posted: 24 Oct 2009 02:00 AM PDT

Polluting industrial processes can be made safer with enzymes. But only a short range of enzymes have been available for the chemical industry. Researchers in Denmark have recently succeeded in producing an artificial enzyme that points the way to enzymes tailor-made for any application.

Well-educated Women Hardest Hit By Breast Cancer

Posted: 24 Oct 2009 02:00 AM PDT

Well-educated women and those who live alone are emotionally the hardest hit by breast cancer, according to new findings. The study found that older women tended to experience lower levels of overall well-being compared to women of similar age in the community two years after their diagnosis.

Long Night Falls Over Saturn's Rings

Posted: 23 Oct 2009 05:00 PM PDT

As Saturn's rings orbit the planet, a section is typically in the planet's shadow, experiencing a brief night lasting from 6 to 14 hours. However, once approximately every 15 years, night falls over the entire visible ring system for about four days.

Pesticides Exposure Linked To Suicidal Thoughts

Posted: 23 Oct 2009 05:00 PM PDT

People with higher levels of pesticide exposure are more likely to have suicidal thoughts according to new research. The agricultural pesticides commonly used in China are organophosphates which are in wide use in many lower income countries but have been banned in many Western nations.

The Lotus's Clever Way Of Staying Dry

Posted: 23 Oct 2009 05:00 PM PDT

Scientists finally understand how the lotus plant keeps itself clean and dry. It took an ultra high speed camera, a powerful microscope and an audio speaker to unlock a secret that has puzzled scientists for ages.

Amino Acid May Help Reduce Cocaine Cravings

Posted: 23 Oct 2009 05:00 PM PDT

A new study in rats has found that N-acetylcysteine (NAC), a commonly available and generally nontoxic amino acid derivative, reverses changes in the brain's circuitry associated with cocaine addiction. The reversal appears to lessen the cravings associated with cocaine, thus providing protection against relapse.

Iberian Wolves Prefer Wild Roe Deer To Domestic Animals

Posted: 23 Oct 2009 05:00 PM PDT

A Spanish researcher has analyzed the preferences of wolves from the north east of the Iberian Peninsula to demonstrate that, in reality, their favorite prey are roe deer, deer and wild boar, ahead of domestic ruminants (sheep, goats, cows and horses).

IVF Insurance Coverage Yields Fewer Multiple Births, Researchers Find

Posted: 23 Oct 2009 05:00 PM PDT

The proportion of in vitro fertilization multiple births was lower in the eight states that provide insurance coverage for couples seeking IVF treatment, primarily due to fewer embryos transferred per cycle, researchers report.

Time-keeping Brain Neurons Discovered

Posted: 23 Oct 2009 02:00 PM PDT

Researchers have identified populations of neurons that code time with extreme precision in the primate brain. These neurons are found in two interconnected brain regions, the prefrontal cortex and the striatum, both of which are known to play critical roles in learning, movement, and thought control.

Long-term Treatment With Proton Pump Inhibitor Can Increase Weight

Posted: 23 Oct 2009 02:00 PM PDT

A clinical research team from Japan examined the effects of long-term proton pump inhibitor (PPI) therapy on body weight (BW) and body mass index in patients with gastroesophageal reflux disease (GERD). They concluded long-term PPI treatment was associated with BW gain in patients with GERD. Reflux patients receiving PPI should be encouraged to manage BW through lifestyle modifications.

Spider Web Glue Spins Society Toward New Biobased Adhesives

Posted: 23 Oct 2009 02:00 PM PDT

With would-be goblins and ghosts set to drape those huge fake spider webs over doorways and trees for Halloween, scientists in Wyoming are reporting on a long-standing mystery about real spider webs: It is the secret of spider web glue. The findings are an advance toward a new generation of biobased adhesives and glues -- "green" glues that replace existing petroleum-based products for a range of uses.

Stem Cells Offer New Hope For Kidney Disease Patients

Posted: 23 Oct 2009 02:00 PM PDT

Several cell-based therapy approaches could provide new treatments for patients with Alport syndrome, according to a new study.

Bioinsecticide To Control The Mediterranean Fruit Fly

Posted: 23 Oct 2009 02:00 PM PDT

The Mediterranean fruit fly is a world plague which represents one of the most serious problems for agriculture. However, the control methods currently present in the market for this plague are ineffective. Scientists have now isolated and identified bacteria that is extremely toxic for Mediterranean fruit fly larvae.

Cognitive Problems Are Direct Result Of Cocaine Exposure, New Animal Research Suggests

Posted: 23 Oct 2009 02:00 PM PDT

New animal studies suggest that memory and other cognitive problems experienced by cocaine-addicted people can result directly from the cocaine abuse in addition to pre-existing traits or lifestyle factors.

Galaxy Cluster Smashes Distance Record

Posted: 23 Oct 2009 11:00 AM PDT

The most distant galaxy cluster yet has been discovered by combining data from NASA's Chandra X-ray Observatory and optical and infrared telescopes. The cluster is located about 10.2 billion light years away, and is observed as it was when the universe was only about a quarter of its present age.

Boys With Urogenital Birth Defects Are 33 Percent More Common In Villages Sprayed With DDT

Posted: 23 Oct 2009 11:00 AM PDT

Women who lived in villages sprayed with DDT to reduce malaria gave birth to 33 percent more baby boys with urogenital birth defects between 2004 and 2006 than women in unsprayed villages, according to a new study. DDT can stay in the body for up to 20 years and the babies in the study were born five to nine years after official records showed their mothers were exposed to DDT spraying.

Genome Of Microbe Silently Shaping Ecology Of Ocean Dead Zones Described

Posted: 23 Oct 2009 11:00 AM PDT

The expansion of oxygen minimum zones (OMZs) affects the processes by which carbon is captured and sequestered on the seafloor. Researchers describe the metagenome of an abundant but uncultivated microbe from a fjord on the coast of British Columbia, Canada that is silently helping to shape the ecology of OMZs worldwide.

Syphilis Survey Reveals Need For Accurate Testing For Early Infection

Posted: 23 Oct 2009 11:00 AM PDT

Although syphilis is one of the oldest known diseases, most health professionals do not have access to the tests necessary to reliably diagnose it in its earliest and most infectious stage.

New Technique Identifies Versions Of The Same Song

Posted: 23 Oct 2009 11:00 AM PDT

Scientists have developed a system to identify common patterns in versions of songs, which will help to quantify the similarity of musical pieces. The technique could be applied to analyze time series of data in other fields, such as economy, biology or astronomy.

Stereotypes Can Fuel Teen Misbehavior

Posted: 23 Oct 2009 11:00 AM PDT

Drinking. Drugs. Caving into peer pressure. When parents expect their teenagers to conform to negative stereotypes, those teens are in fact more likely to do so, according to new research.

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