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Science News for September 2, 2010


Hip dysplasia susceptibility in dogs may be underreported, according to Penn Vet comparative study

A recent University of Pennsylvania study compares two hip screening methods and finds that traditional scoring underestimates a dog's susceptibility to osteoarthritis. The PennHIP method suggests that even 'excellent' hips may be at risk for hip dysplasia, with some breeds facing a high risk of up to 100% susceptible progeny.

SourceUniversity of Pennsylvania·JournalJournal of the American Veterinary Medical Association·DateSep 2, 2010

Tiny ant bodyguards keep massive elephants at bay

A new study reveals that tiny ants play a crucial role in protecting acacia trees from elephants in the African savanna. The findings suggest that swarming groups of ants can deter elephants, which prefer to eat ant-plants over their favorite tree food.

SourceCell Press·JournalCurrent Biology·DateSep 2, 2010

Listening to ancient colors

A team of McGill chemists has discovered a technique that can identify the composition of pigments used in art work that is decades or even centuries old. The technique, known as photoacoustic infrared spectroscopy, analyzes the infrared spectra emitted by pigments when exposed to light, allowing researchers to classify 12 historically...

UCLA chemists, engineers achieve world record with high-speed graphene transistors

Researchers at UCLA have overcome difficulties in integrating graphene into electronic devices, achieving the fastest graphene transistor to date with a cutoff frequency of up to 300 GHz. This breakthrough enables the development of high-speed radio-frequency electronics for applications in microwave communication and radar technologies.

Occurrence of increased kidney transplant listings in patients with prior non-kidney transplants

A study reveals that individuals with prior non-kidney organ transplants are more likely to be listed for a kidney transplant before dialysis initiation. This trend adds to the list of organ allocation challenges, as these patients have higher waitlist mortality rates and shorter lifespans compared to those with prior kidney transplants.

SourceAmerican Society of Nephrology·JournalClinical Journal of the American Society of Nephrology·DateSep 2, 2010

Lupus Research Institute-funded study points to increased risk for lupus in men

A recent study funded by the Lupus Research Institute has discovered a link between an X-linked TLR7 gene variant and an increased risk of developing lupus in men. The research, published in the Proceedings of the National Academy of Sciences, provides strong evidence that alterations in the TLR7 gene can promote lupus in humans.

SourceLupus Research Alliance·JournalProceedings of the National Academy of Sciences·DateSep 2, 2010

Head start for migraine sufferers

A new study by Elizabeth Seng and Dr. Kenneth Holroyd found that psychological treatments significantly increase confidence in self-management abilities among severe migraine sufferers. Behavioral management programs alongside drug therapy led to increased confidence, especially among those with low control over their condition.

SourceSpringer·JournalAnnals of Behavioral Medicine·DateSep 2, 2010

Ancient brew masters tapped antibiotic secrets

Researchers have found evidence that ancient Nubians regularly consumed tetracycline, a powerful antibiotic, most likely through their beer. This discovery suggests that the art of making antibiotics was common practice nearly 2,000 years ago and challenges traditional views on the origins of modern medicine.

SourceEmory Health Sciences·JournalAmerican Journal of Physical Anthropology·DateSep 2, 2010

Recipe for water: Just add starlight

Astronomers discovered a cloud of hot water vapor around the old star IRC+10216 and suspected comets or dwarf planets were evaporating to produce it. However, Herschel's instruments revealed that ultraviolet light from surrounding stars is the actual source of the water, which forms closer to the star than comets can stably exist.

SourceEuropean Space Agency·JournalNature·DateSep 2, 2010

Melding Wi-Fi with digital TV 'white space'

Rice University researchers are testing wireless communications technology that uses dormant broadcast television channels to deliver free, high-speed broadband Internet service. The new grant will allow the network to dynamically adapt its frequency usage and study how people interact with the new technology.

Edible nanostructures

Researchers at Northwestern University have discovered edible nanostructures that can be used for gas storage and food technologies. The compounds, made from natural ingredients like sugar and starch, offer a green approach to storing hydrogen and have potential applications in cleaner air and healthcare.

SourceNorthwestern University·JournalAngewandte Chemie·DateSep 2, 2010

Functional motor neuron subtypes generated from embryonic stem cells

Scientists have devised a method to coax mouse embryonic stem cells into forming highly specific motor neuron subtypes. This achievement may prove useful for future therapies for motor neuron diseases. The study provides new insight into motor neuron differentiation and demonstrates the ability to generate defined motor neuron subtypes.

SourceCell Press·JournalCell Stem Cell·DateSep 2, 2010

Pivotal study finds link between PTSD and dementia

A pivotal study finds a strong association between post-traumatic stress disorder (PTSD) and an increased risk of dementia in veterans. The research, published in the Journal of the American Geriatrics Society, suggests that PTSD may be an early marker of dementia or contribute to cognitive impairment.

SourceWiley·JournalJournal of the American Geriatrics Society·DateSep 2, 2010

Bochum's researchers discover proton diode

Biophysicists at Ruhr-University Bochum discovered a proton diode in proteins that allows protons to pass through cell membranes in one direction. Water molecules play a crucial role in this process, supporting the hypothesis that protein-bound water molecules are essential for protein function.

SourceRuhr-University Bochum·JournalAngewandte Chemie·DateSep 2, 2010

Carlos '97 free kick no fluke, say French physicists

A group of French physicists have computed the trajectory of Roberto Carlos' famous 1997 free kick goal, revealing it was not an incredible fluke but a carefully calculated move. The 'spinning ball spiral' effect, as they call it, shows how the spin and velocity of the ball can create an unexpected trajectory.

SourceIOP Publishing·JournalNew Journal of Physics·DateSep 2, 2010

Risk of marijuana's 'gateway effect' overblown, new UNH research shows

Research from the University of New Hampshire suggests that marijuana use may not lead to illicit drug abuse in young adulthood as previously thought. The study found that life factors such as employment status and stress play a stronger role in determining illicit drug use. In fact, the strongest predictor of illicit drug use is race/...

SourceUniversity of New Hampshire·JournalJournal of Health and Social Behavior·DateSep 2, 2010

Dangers in the garden

A previously fit man contracted Legionnaire's disease after cutting his finger on compost, highlighting the risk of infection through gardening activities. The UK Royal Horticultural Society has announced cautionary statements on potting compost bags to warn gardeners about this rare but serious risk.

SourceThe Lancet_DELETED·JournalThe Lancet·DateSep 2, 2010

New guidelines to ease sleepless nights

The British Association for Psychopharmacology has released new guidelines to guide psychiatrists and physicians in treating sleep disorders. These guidelines recommend cognitive behavioral therapy as an effective treatment option for insomnia, which can be improved with specialist targeted therapy. The guidelines also address specific...

SourceSAGE Publications UK·JournalJournal of Psychopharmacology·DateSep 2, 2010

Tropical forests slashed for farmland

The study found that over 80% of new farmland created in the tropics between 1980 and 2000 came from felling forests, with significant implications for global warming. The research suggests that the rate of deforestation may be slowing, but the demand for agricultural production is expected to continue growing.

SourceStanford University·JournalProceedings of the National Academy of Sciences·DateSep 2, 2010