Wednesday, June 17, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


New Nanoparticles Could Lead To End Of Chemotherapy

Posted: 17 Jun 2009 11:00 AM PDT

Specially engineered nanoparticles could someday target and destroy tumors, sparing patients from toxic, whole-body chemotherapies.

Early and Easy Detection Of Alzheimer's Disease?

Posted: 17 Jun 2009 11:00 AM PDT

A new diagnostic technique which may greatly simplify the detection of Alzheimer's disease has been discovered. There is currently no accepted blood test for Alzheimer's, and the diagnosis is usually based on expensive and labor-intensive neurological, neuropsychological and neuroimaging evaluations.

Hybrid System Of Human-Machine Interaction Created

Posted: 17 Jun 2009 11:00 AM PDT

Scientists have created a "hybrid" system to examine real-time interactions between humans and machines (virtual partners). By pitting human against machine, they open up the possibility of exploring and understanding a wide variety of interactions between minds and machines, and establishing the first step toward a much friendlier union of man and machine, and perhaps even creating a different kind of machine altogether.

Powerful Nutrient Cocktail Can Put Kids With Crohn's Into Remission

Posted: 17 Jun 2009 11:00 AM PDT

Treating children with inflammatory bowel disease (IBD) usually involves the same steroids-based medication prescribed to adults. But such treatments can have negative side effects for kids and teens dealing with IBD. A researcher now promotes liquid nutrition to combat inflammatory bowel disease.

3-D, Real-time X-ray Images May Be Closer To Reality

Posted: 17 Jun 2009 11:00 AM PDT

Three-dimensional, real-time X-ray images may be closer to reality. New work on a process called high-harmonic generation, or HHG. X-ray radiation can be created by focusing an optical laser into atoms of gaseous elements – usually low-electron types such as hydrogen, helium, or neon.

Developmental Experiences May Explain 'Unexplained' Medical Symptoms?

Posted: 17 Jun 2009 11:00 AM PDT

A new theory on the role of developmental experiences has been described. Maternal perception of a threatening environment may be transmitted to the fetus when hormones cross the placenta and affect fetal physiology, effectively 'programming' the fetal stress response system and associated behaviors toward enhanced vigilance.

Same-sex Behavior Seen In Nearly All Animals, Review Finds

Posted: 17 Jun 2009 08:00 AM PDT

Same-sex behavior is a nearly universal phenomenon in the animal kingdom, common across species, from worms to frogs to birds, concludes a new review of existing research.

Trans Fats Hinder Multiple Steps In Blood Flow Regulation Pathways

Posted: 17 Jun 2009 08:00 AM PDT

Partially hydrogenated vegetable oils in processed foods contain trans fatty acids that interfere with the regulation of blood flow. A new report reveals a new way in which these "trans fats" gum up the cellular machinery that keeps blood moving through arteries and veins.

Fossil Teeth Of Three-toed Browsing Horse Found In Panama Canal Earthworks

Posted: 17 Jun 2009 08:00 AM PDT

Rushing to salvage fossils from the Panama Canal earthworks, a paleontology intern unearthed a set of fossil teeth. Experts identified the fossil as Anchitherium clarencei, a three-toed browsing horse.

Cells Are Like Robust Computational Systems, Scientists Report

Posted: 17 Jun 2009 08:00 AM PDT

Gene regulatory networks in cell nuclei are similar to cloud computing networks, such as Google or Yahoo!, researchers report in the journal Molecular Systems Biology. The similarity is that each system keeps working despite the failure of individual components, whether they are master genes or computer processors.

Living Near Fast Food Outlet Not A Weighty Problem For Kids

Posted: 17 Jun 2009 08:00 AM PDT

A new study contradicts the conventional wisdom that living near a fast food outlet increases weight in children and that living near supermarkets, which sell fresh fruit and vegetables as well as so called junk food, lowers weight.

Tai Chi Benefits For Arthritis Shown

Posted: 17 Jun 2009 08:00 AM PDT

Tai chi has been found to have positive health benefits for musculoskeletal pain. The results of the first comprehensive analysis of tai chi suggest that it produces positive effects for improving pain and disability among arthritis sufferers.

Common Fish Species Has 'Human' Ability To Learn

Posted: 17 Jun 2009 05:00 AM PDT

Although worlds apart, the way fish learn could be closer to humans' way of thinking than previously believed, suggests a new research study.

Smokers' Muscles Tire More Quickly

Posted: 17 Jun 2009 05:00 AM PDT

Smokers' muscles tire much more quickly than those of non-smokers, irrespective of how many cigarettes they smoke per day or how long they have smoked.

Ultrasonics Improves Surgeons’ View When Removing Tumors From The Pituitary Gland

Posted: 17 Jun 2009 05:00 AM PDT

Ultrasonics improves surgeons' view when they remove tumors from the pituitary gland. Hidden in a little hollow in the skull, at about the level of the eye, we have a gland about the size of a blackcurrant. This is the hypophysis, or pituitary, the body's center for hormone manufacture. The gland produces a wide range of hormones which in turn control other organs that manufacture yet more hormones.

Protein May Be Strongest Indicator Of Rare Lung Disease, Study Shows

Posted: 17 Jun 2009 05:00 AM PDT

Researchers have discovered a protein in the lungs that can help in determining progression of the rare lung disease idiopathic pulmonary fibrosis.

Individuals Who Apply Pesticides Are Found To Have Double The Risk Of Blood Disorder

Posted: 17 Jun 2009 05:00 AM PDT

A study involving 678 individuals who apply pesticides recently found that exposure to certain pesticides doubles one's risk of developing an abnormal blood condition called MGUS (monoclonal gammopathy of undetermined significance) compared with individuals in the general population.

Why Do We Choose Our Mates? Ask Charles Darwin, Prof Says

Posted: 17 Jun 2009 05:00 AM PDT

Charles Darwin wrote about it 150 years ago: animals don't pick their mates by pure chance -- it's a process that is deliberate and involves numerous factors. After decades of examining his work, experts agree that he pretty much scored a scientific bullseye, but a very big question is, "What have we learned since then?" asks a biologist who has studied Darwin's theories.

Climate Change Already Having Impact On U.S., Expected To Worsen

Posted: 17 Jun 2009 02:00 AM PDT

Extreme weather, drought, heavy rainfall and increasing temperatures are a fact of life in many parts of the US as a result of human-induced climate change, researchers report. These and other changes will continue and likely increase in intensity into the future, the scientists found. For the southwest region of the United States, which includes California, the report forecasts a hotter, drier climate with significant effects on the environment, agriculture and health.

Single Gene Found To Control Growth Of Some Cancers

Posted: 17 Jun 2009 02:00 AM PDT

A single gene can control growth in cancers related to the Epstein-Barr virus and that existing therapeutics can inactivate it, according to new research.

Chemical Fingerprint Of Barrett's Esophagus Identified

Posted: 17 Jun 2009 02:00 AM PDT

Canadian Light Source scientists used the synchrotron's infrared microscope to identify the chemical fingerprint of Barrett's esophagus, a condition that can lead to esophageal cancer.

Obstructive Sleep Apnea Prevalent In Nonobese Patients

Posted: 17 Jun 2009 02:00 AM PDT

There is a high probability of obstructive sleep apnea in nonobese, middle-aged patients, according to new research.

First Climate-based Model To Predict Dengue Fever Outbreaks

Posted: 17 Jun 2009 02:00 AM PDT

Researchers have used global climatological data and vegetation indices from Costa Rica, to predict Dengue outbreaks in the region.

The Dark Side Of Gifts: Feeling Indebted May Drive People To The Marketplace

Posted: 17 Jun 2009 02:00 AM PDT

You need to move out of your apartment. Do you call in your friends and family to haul boxes and furniture or contact a moving company? A new study in the Journal of Consumer Research shows that sometimes the emotions connected with asking for favors can actually drive people to the market.

Autistics Better At Problem-solving, Study Finds

Posted: 16 Jun 2009 11:00 PM PDT

Autistics are up to 40 percent faster at problem-solving than non-autistics, according to a new study published in the journal Human Brain Mapping. As part of the investigation, participants were asked to complete patterns in the Raven's Standard Progressive Matrices -- test that measures hypothesis-testing, problem-solving and learning skills.

Cardiac Rehabilitation Saves Lives

Posted: 16 Jun 2009 11:00 PM PDT

Coronary heart disease is the leading cause of death worldwide and a major driver of medical and economic costs, especially among older adults. It has long been established that cardiac rehabilitation improves survival, at least in middle-aged, low- and moderate-risk white men. Now a large study reports that older cardiac patients benefit as much from cardiac rehab as their younger counterparts.

Advanced Image Analysis Can Provide Better Risk Assessment In Hardening Of The Arteries

Posted: 16 Jun 2009 11:00 PM PDT

Ultrasound examination of the carotid artery is a patient-friendly and inexpensive method for assessing atherosclerosis and thereby predicting the risk of cardiovascular diseases. Researchers have now developed new analytical methods for ultrasound images that can provide more reliable and more exact assessments of atherosclerosis.

Clearing Pneumococcal Bacteria From The Upper Airways

Posted: 16 Jun 2009 11:00 PM PDT

The bacterium Streptococcus pneumoniae can be found in the upper airways (the nose, mouth, and throat) of most children. When living in the upper airways, S. pneumoniae is harmless. However, if the bacteria are carried to other sites, they cause disease, for example ear infections and life-threatening pneumonia.

UK Tops The List Of 213 Countries At Extreme Risk To The Spread Of Swine Flu

Posted: 16 Jun 2009 11:00 PM PDT

A Warwick Business School professor and one of the founders of global risks specialist, Maplecroft, has released maps and indices revealing the countries most at risk from an influenza pandemic. The map of Risk of Spread shows the UK most at risk to the spread of an influenza pandemic.

The Complicated Consumer: Positive Ads Aren't Always The Most Effective

Posted: 16 Jun 2009 11:00 PM PDT

Ads that feature positive emotions, like happiness, are not always the best way to reach consumers, according to a new study in the Journal of Consumer Research.

Super-computer Provides First Glimpse Of Earth's Early Magma Interior

Posted: 16 Jun 2009 08:00 PM PDT

By using a super-computer to virtually squeeze and heat iron-bearing minerals under conditions that would have existed when the Earth crystallized from an ocean of magma to its solid form 4.5 billion years ago, geochemists have produced the first picture of how certain forms of iron were initially distributed in the solid Earth.

Key Target Of Aging Regulator Found

Posted: 16 Jun 2009 08:00 PM PDT

Researchers have defined a key target of an evolutionarily conserved protein that regulates the process of aging. The study provides fundamental knowledge about key mechanisms of aging that could point toward new anti-aging strategies and cancer therapies.

Illegal Trade In Vietnam's Marine Turtles Continues Despite National Ban

Posted: 16 Jun 2009 08:00 PM PDT

Marine turtles are vanishing from Viet Nam's waters and illegal trade is largely to blame says a new study.

Lung Disease: Top Notch Decisions In The Developing Airways Bring Insights Into Lung Disease

Posted: 16 Jun 2009 08:00 PM PDT

In the normal lung, the airways are lined by a balanced mixture of ciliated, secretory and neuroendocrine cells which perform functions as diverse as air humidification, detoxification, and clearance of environmental particles. This balance can be altered dramatically by faulty adaptation responses of the lung to cigarette smoke or allergens in patients with chronic obstructive pulmonary disease and asthma.

Engineering Stereotypes Drive Counterproductive Practices

Posted: 16 Jun 2009 08:00 PM PDT

Bad practices that many students believe will make them become expert engineers are the ire of managers who hire recent engineering graduates.

Cognitive Behavioral Therapy Is An Effective Treatment For Chronic Insomnia

Posted: 16 Jun 2009 08:00 PM PDT

A majority of people experiencing chronic insomnia can experience a normalization of sleep parameters through the use of cognitive behavioral therapy for insomnia, according to new research.

Betelgeuse, Red Supergiant In Constellation Orion, Has Shrunk By 15 Percent In 15 Years

Posted: 16 Jun 2009 05:00 PM PDT

The red supergiant star Betelgeuse, which is so large it would extend to Jupiter's orbit in our solar system, has steadily shrunk over the past 15 years, according to physicists. Since 1993, its radius has gone down by 15 percent, equivalent to the radius of Venus's orbit. This conclusion comes from unique laser interferometer observations.

Sinus Infections May Be A Factor In Toxic Shock Syndrome In Children

Posted: 16 Jun 2009 05:00 PM PDT

Rhinosinusitis (infection and inflammation in the sinus passages surrounding the nose) appears to be a primary factor in about one-fifth of toxic shock syndrome cases in children, according to a new article.

Structure Of HIV Protein Shell Revealed

Posted: 16 Jun 2009 05:00 PM PDT

Scientists have provided a close-up look at the cone-shaped shell that is the hallmark of human immunodeficiency virus, revealing how it is held together -- and possible ways to break it apart.

Prototype Breast Cancer Imaging System May Improve Patient Care

Posted: 16 Jun 2009 05:00 PM PDT

A prototype breast imaging system combining positron emission tomography and magnetic resonance imaging technologies could greatly improve breast cancer imaging capabilities, according to researchers.

Hybrid Scanner Brings Molecular Functioning To The Forefront

Posted: 16 Jun 2009 05:00 PM PDT

A major barrier to developing a hybrid positron emission tomography/magnetic resonance imaging system could be removed by using a novel approach for reconstructing data, according to researchers.

'Shortcuts' Of The Mind Lead To Miscalculations Of Weight And Caloric Intake, Study Finds

Posted: 16 Jun 2009 05:00 PM PDT

Psychologists have identified a cognitive shortcut they call "Unit Bias," which causes people to ignore vital, obvious information in their decision-making process, points to a fundamental flaw in the modern, evolved mind and may also play a role in the American population's 30 years of weight gain.

Rare Magnetar Discovered: Giant Eruption Reveals 'Dead' Star

Posted: 16 Jun 2009 02:00 PM PDT

NASA's Swift satellite reported multiple blasts of radiation from a rare object known as a soft gamma repeater, or SGR. Astronomers have discovered a dead star belonging to a rare group: the magnetars.

Breakthrough In Understanding Severe Asthma Has Potential For New Treatment

Posted: 16 Jun 2009 02:00 PM PDT

Scientists believe they have discovered a key element in the development of chronic asthma. Their research explains why the structure and function of asthmatic airways are changed or ''remodeled'' and how this contributes to chronic asthma.

Robotic Ferret Will Detect Hidden Drugs And Weapons

Posted: 16 Jun 2009 02:00 PM PDT

A new type of robot being developed will make it easier to detect drugs, weapons, explosives and illegal immigrants concealed in cargo containers.

Breakthrough In Early Detection And Prevention Of Age-related Macular Degeneration

Posted: 16 Jun 2009 02:00 PM PDT

Scientists have identified a new target for the diagnosis and treatment of age-related macular degeneration, the most common cause of blindness in older Americans.

Sediment Yields Climate Record For Past Half-million Years

Posted: 16 Jun 2009 02:00 PM PDT

Researchers here have used sediment from the deep ocean bottom to reconstruct a record of ancient climate that dates back more than the last half-million years. The record, trapped within the top 20 meters (65.6 feet) of a 400-meter (1,312-foot) sediment core drilled in 2005 in the North Atlantic Ocean by the Integrated Ocean Drilling Program, gives new information about the four glacial cycles that occurred during that period.

The Sweet Taste Of Uncertainty: Winners Enjoy Waiting To Discover What They've Won

Posted: 16 Jun 2009 02:00 PM PDT

You've just won a prize. Would you like to find out what it is right away, or wait until later? A new study in the Journal of Consumer Research says most people are happier waiting.

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