Friday, July 24, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Brain Develops Motor Memory For Prosthetics

Posted: 24 Jul 2009 11:00 AM PDT

A new study shows that the brain can develop a stable, neural map of a how to control a prosthetic device, providing hope that physically disabled people can one day master control of artificial limbs with greater ease.

Reprogrammed Mouse Fibroblasts Can Make A Whole Mouse

Posted: 24 Jul 2009 11:00 AM PDT

Scientists report an important advance in the characterization of reprogrammed induced pluripotent stem cells, or iPSCs. Researchers used established methods to reprogram mouse cells to isolate five new iPSC lines, and then found that, using one of these lines, they were able to make by tetraploid complementation embryos that survived until birth, and one embryo that also survived to adulthood.

'Long-haired' Water Molds Are The Most Virulent

Posted: 24 Jul 2009 11:00 AM PDT

The water mould Saprolegnia can cause skin disease in salmon during its freshwater phase. The mould attacks both fish and eggs and has at times caused great economic loss for the fish farming industry, both in Norway and in other salmon-producing countries. Saprolegnia infection may be seen with the naked eye as white patches on the skin or as "cotton-like" patches on eggs.

Even Healthy Lungs Labor At Acceptable Ozone Levels

Posted: 24 Jul 2009 11:00 AM PDT

Ozone exposure, even at levels deemed safe by current clean air standards, can have a significant and negative effect on lung function, according to researchers.

New Generation Of Solar Cells Promises Efficiency

Posted: 24 Jul 2009 11:00 AM PDT

Scientists have produced thin film solar cells made from compound semiconductors which are already reaching a 12 percent efficiency. Thin film solar cells are considered the next generation of solar cells and are expected to be considerably cheaper because they need much less material and energy in their production than today's photovoltaic modules.

Technology On Way To Forecasting Humanity's Needs

Posted: 24 Jul 2009 11:00 AM PDT

Much as meteorologists predict the path and intensity of hurricanes, some researchers believe we will one day predict with unprecedented foresight, specificity and scale such things as the economic and social effects of billions of new Internet users in China and India, or the exact location and number of airline flights to cancel around the world in order to halt the spread of a pandemic.

Physicists Create First Nanoscale Mass Spectrometer

Posted: 24 Jul 2009 08:00 AM PDT

Using devices millionths of a meter in size, physicists have developed a technique to determine the mass of a single molecule, in real time.

Copper Can Help In The Battle Against Influenza A H1N1, Says Scientist

Posted: 24 Jul 2009 08:00 AM PDT

A leading microbiologist says his research has found copper is effective in inhibiting the influenza A H1N1 virus.

DNA Of Ancient Lost Barley Could Help Modern Crops Cope With Water Stress

Posted: 24 Jul 2009 08:00 AM PDT

Researchers have recovered significant DNA information from a lost form of ancient barley that triumphed for over 3,000 years seeing off: five changes in civilization, water shortages and a much more popular form of barley that produces more grains. This discovery offers a real insight into the couture of ancient farming and could assist the development of new varieties of crops to face today's climate change challenges.

Emphysema Severity Directly Linked To Coal Dust Exposure

Posted: 24 Jul 2009 08:00 AM PDT

Coal dust exposure is directly linked to severity of emphysema in smokers and nonsmokers alike, according to new research.

Breakthrough In Transgenic Animal Production Enables Development Of New Human Disease Models

Posted: 24 Jul 2009 08:00 AM PDT

Scientists have announced the creation of the first genetically modified mammals developed using zinc finger nuclease technology.

Embarrassing Illnesses No Bar To Information Sharing

Posted: 24 Jul 2009 08:00 AM PDT

People with potentially "stigmatizing" medical conditions are just as likely as those with less stigmatizing illnesses to allow their personal information to be used for health research. A new study found that the purpose of the research and the type of information to be collected were more important in determining patients' consent choices. In particular, they were very wary of allowing their personal information to be put to commercial use.

Strong Evidence That Cloud Changes May Exacerbate Global Warming

Posted: 24 Jul 2009 05:00 AM PDT

As the earth warms, it is not known whether clouds will dissipate and let more heat in, or whether cloud cover will increase. In a study in Science, researchers begin to unravel this mystery. Using observational data and models, they have established that low-level clouds appear to dissipate as the ocean warms, indicating that changes in these clouds may increase the warming of the planet.

Protein Excreted In Urine May Be Help In Diagnosing Kidney Disease Caused By HIV

Posted: 24 Jul 2009 05:00 AM PDT

New data are helping researchers understand the extent to which a certain protein -- NGAL -- can play a significant role in marking chronic kidney disease resulting from HIV while at the same time distinguishing nephropathy from more common causes such as diabetes and hypertension.

Noise Pollution Negatively Affects Woodland Bird Communities

Posted: 24 Jul 2009 05:00 AM PDT

A new study shows the strongest evidence yet that noise pollution negatively influences bird populations, findings with implications for the fate of ecological communities situated amid growing urban clamor.

Fresh Meats Often Contain Additives Harmful To Kidney Disease Patients

Posted: 24 Jul 2009 05:00 AM PDT

Uncooked meat products enhanced with food additives may contain high levels of phosphorous and potassium that are not discernable from inspection of food labels, according to a new study. This can make it difficult for people to limit dietary phosphorous and potassium that at high levels are harmful to kidney disease patients.

Supercomputer Fastest Of Its Type In World

Posted: 24 Jul 2009 05:00 AM PDT

A supercomputer named Novo-G described by its lead designer as likely the most powerful computer of its kind in the world became operational the week of July 21, 2009.

The Paradox Of Loyalty To Country

Posted: 24 Jul 2009 05:00 AM PDT

In the wake of the Iraq invasion, many US citizens who disagreed with the Bush Administration's decision detached themselves from politics. On the other hand, a surprising number of people became more patriotic in spite of their objections. Why would disappointment in one's country inspire increased loyalty? Doesn't it seem more natural to disavow the country as a protest?

Auroras In Northern And Southern Hemispheres Are Not Identical

Posted: 24 Jul 2009 02:00 AM PDT

Researchers present evidence that the auroras in the Northern and the Southern hemispheres can be totally asymmetric. These findings contradict the commonly made assumption of aurora being mirror images of each other.

Halting A Pandemic: NIH Mounts Search For A H1N1 Vaccine

Posted: 24 Jul 2009 02:00 AM PDT

Bracing for an outbreak of 2009 H1N1 (swine-origin) flu that an infectious diseases expert estimates could sicken one in five people this fall, scientists are launching a series of clinical trials this summer to test vaccines to protect against the illness. "It's looking more and more like we're going to have a big flu outbreak this fall as soon as the kids get back to school. Influenza is unpredictable, but I believe this pandemic will hit pre-teens, teens and their parents hard, and as many as 60 million Americans could be sick with the flu," according to one expert.

Longer Life For Milk Drinkers, Study Suggests

Posted: 24 Jul 2009 02:00 AM PDT

Drinking milk can lessen the chances of dying from illnesses such as coronary heart disease (CHD) and stroke by up to 15-20% according to new research. In recent times milk has often been portrayed by the media as an unhealthy food.

Stroke: One Disease, Two Effects

Posted: 24 Jul 2009 02:00 AM PDT

While both males and females are at risk for stroke, males have a particular sensitivity. Data show that male stroke victims outnumber females by about two to one. Women are likewise at risk for stroke and, as they age, their outcomes are often worse than their male counterpart's.Why does one disease affect males and females differently?

New Technique Can Fast-track Better Ionic Liquids For Biomass Pre-treatments

Posted: 24 Jul 2009 02:00 AM PDT

Researchers are using the natural auto-fluorescence of plant cell walls to dynamically track how ionic liquids are able to dissolve lignocellulose into fermentable sugars for the production of advanced biofuels.

Post-traumatic Stress Disorder Associated With Higher Alzheimer's, Dementia Risk

Posted: 24 Jul 2009 02:00 AM PDT

Though discoveries about Alzheimer's risk factors are often in the news, adults do not know about the relationship between Alzheimer's risk and heart health, nor that physical activity can be protective, according to new research. An additional study shows higher Alzheimer's risk in veterans with post-traumatic stress disorder.

Growing New Tissues: Unraveling Flatworm Regeneration

Posted: 23 Jul 2009 11:00 PM PDT

Planarian flatworms are only a few millimeters up to a few centimeters in length, live in freshwater and are the object of intense research, because they possess the ability to regenerate lost tissue with the help of their stem cells and even grow an entirely new worm out of minute amputated body parts. Researchers have identified small RNAs which may play a role in regeneration and stem cell function.

Gene Mutation Responsible For Hereditary Neuroendocrine Tumor Discovered

Posted: 23 Jul 2009 11:00 PM PDT

Researchers have identified the gene that is mutated in a hereditary form of a rare neuroendocrine tumor called paraganglioma. The gene, called hSDH5, is required for activation of an enzyme complex that plays a critical role in the chemical reactions that take place within cells to convert biochemical energy into usable energy.

New Lab Test Offers Better Prediction Of HIV Microbicide Safety

Posted: 23 Jul 2009 11:00 PM PDT

Scientists have devised a laboratory test for predicting whether microbicides against HIV are safe for human use. The researchers have also discovered why several supposedly "safe" microbicides made women more susceptible to HIV infection.

Removal of Tonsils and Adenoids Associated With Ongoing Benefits for Children With Breathing Problems During Sleep

Posted: 23 Jul 2009 11:00 PM PDT

Two and a half years after children with sleep-related breathing disorders had surgery to remove their tonsils and adenoids (glands in the back of the throat), they appear to sleep better than they did before the procedure but not as well as they did six months after, according to a new report.

Fast, Flexible And Strong: Building Better Automated Workplace Assistants

Posted: 23 Jul 2009 11:00 PM PDT

Researchers have built a prototype intelligent work assistant device, that supports smooth interaction between a human operator and an automated assistant, and developed software that helps protect the health and safety of the human operator.

HIV Infection And Chronic Drinking Have A Synergistic, Damaging Effect On The Brain

Posted: 23 Jul 2009 11:00 PM PDT

At least half of clinic patients with the human immunodeficiency virus report they also drink heavily. Findings show that co-existing HIV infection and chronic alcoholism synergistically damage brain function. Specifically, immediate episodic memory was impaired, while working memory remained intact.

Nanotubes Weigh A Single Atom

Posted: 23 Jul 2009 08:00 PM PDT

How can you weigh a single atom? Researchers have built an exquisite new device that can do just that. It may ultimately allow scientists to study the progress of chemical reactions, molecule by molecule.

Therapy For Parkinson's, Other Diseases Advanced With Miniaturization Of Device

Posted: 23 Jul 2009 08:00 PM PDT

By miniaturizing a device that monitors the delivery of healthy cells, researchers are developing a powerful instrument for physicians to use in treating patients with Parkinson's syndrome, brain tumors and other diseases.

Modest Fisheries Reduction Could Protect Vast Coastal Ecosystems

Posted: 23 Jul 2009 08:00 PM PDT

A reduction of as little as 5 percent in fisheries catch could result in as much as 30 percent of the British Columbia coastal ecosystems being protected from overfishing, according to a new study.

Women With Cystic Fibrosis Can Have Safe And Successful Fertility Treatment

Posted: 23 Jul 2009 08:00 PM PDT

Women with cystic fibrosis can have fertility treatment to help them have babies without any long-term adverse effects on either themselves or their children, researchers have found. Women with cystic fibrosis often have thick cervical mucus preventing them from becoming pregnant naturally. However, a pregnancy can be achieved by the use of intrauterine insemination (IUI) or in vitro fertilization (IVF).

New Biochips Anchor Proteins In Gel

Posted: 23 Jul 2009 08:00 PM PDT

Biochips carrying thousands of DNA fragments are widely used for examining genetic material. Experts would also like to have biochips on which proteins are anchored. This requires a gel layer which can now be produced industrially.

How To Maintain The Integrity And Accessibility Of Research Data

Posted: 23 Jul 2009 08:00 PM PDT

Though digital technologies and high-speed communications have significantly expanded the capabilities of scientists -- allowing them to analyze and share vast amounts of data -- these technologies are also raising difficult questions for researchers, institutions and journals.

Pigeons As Art Critics? Pigeons, Like Humans, Use Color And Pattern Cues To Evaluate Paintings

Posted: 23 Jul 2009 05:00 PM PDT

Pigeons judge the beauty of art as humans do -- by using both color and pattern cues. Pigeons could be art critics yet, according to a new study which shows that like humans, pigeons can be trained to tell the difference between 'good' and 'bad' paintings. Pigeons use both color and pattern cues to judge the paintings' beauty as defined by humans, as well as their texture.

'Single-Shot' Vaccines May Protect Against H5N1 Influenza Virus

Posted: 23 Jul 2009 05:00 PM PDT

Two newly developed "single-shot" H5N1 influenza vaccines protected ferrets against lethal infection with the H5N1 influenza virus and may allow for mass vaccination in humans in the event of a pandemic outbreak.

Biodiesel On The Wing: A 'Green' Process For Biodiesel From Feather Meal

Posted: 23 Jul 2009 05:00 PM PDT

Scientists are reporting development of a new and environmentally friendly process for producing biodiesel fuel from "chicken feather meal," made from the 11 billion pounds of poultry industry waste that accumulate annually in the United States alone.

Antidepressant Directly Stimulates Brain Growth Factor Receptors

Posted: 23 Jul 2009 05:00 PM PDT

The tricyclic antidepressant amitriptyline can directly bind and stimulate the growth factor receptors TrkA and TrkB in the brain. Other antidepressants do not have the same properties. The finding suggests a distinct mechanism by which some antidepressant and pain relief compounds may function.

Stuff Of Stink Bombs Investigated For Role In Pregnancy

Posted: 23 Jul 2009 05:00 PM PDT

A researcher is probing the role of hydrogen sulfide. Hydrogen sulphide -- partially responsible for the foul odour of stink bombs -- is also a toxic gas and has been used for chemical warfare.

For Abused Women, Leaving Is A Complex And Confusing Process

Posted: 23 Jul 2009 05:00 PM PDT

Nothing could be easier than walking out the door, right? According to a new journal article, an abused woman actually goes through a five-step process of leaving that can be complicated at every stage by boundary ambiguity.

Ancient Maya Practiced Forest Conservation 3,000 Years Ago

Posted: 23 Jul 2009 02:00 PM PDT

Paleoethnobotanists have concluded that not only did the Maya people practice forest management, but when they abandoned their forest conservation practices it was to the detriment of the entire Maya culture.

Drug-dispensing Contact Lens

Posted: 23 Jul 2009 02:00 PM PDT

Taking eye drops multiple times a day can be difficult to do, and as little as 1 to 7 percent of the dose is actually absorbed by the eye. Now, researchers have developed special contact lenses that can gradually dispense a constant amount of medication to the eye, at adjustable rates.

Infant Inhalation Of Ultrafine Air Pollution Linked To Adult Lung Disease

Posted: 23 Jul 2009 02:00 PM PDT

Early exposure to environmentally persistent free radicals (present in airborne ultrafine particulate matter) affects long-term lung function, according to new research. These results could be especially important because the US Environmental Protection Agency does not currently regulate ultrafine PM emissions.

New Method For HIV Testing Holds Promise For Developing World

Posted: 23 Jul 2009 02:00 PM PDT

A new technique that detects the HIV virus early and monitors its development without requiring refrigeration may make AIDS testing more accessible in sub-Saharan Africa.

Artificial Noise Saves Energy For Computer Network Providers

Posted: 23 Jul 2009 02:00 PM PDT

Against the background of climate change, how can xDSL systems function more energy-efficiently and cost-effectively? Scientists are providing a solution combining existing methods which network providers could implement immediately.

How Children Draw Conclusions From The Products They See

Posted: 23 Jul 2009 02:00 PM PDT

A new study examines children's tendencies to draw conclusions about social roles from the products they see.

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