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Science News Archive July 2013 - Page 11


Page 11 of 31

OU awarded OCAST applied research grant

A University of Oklahoma research team has received a $236,000 grant to develop and commercialize IV-VI semiconductor mid-infrared detectors. The OU detector outperforms commercially available products and could gain significant market share, creating local high-tech businesses and jobs.

Declining sea ice strands baby harp seals

A Duke University study reveals that shrinking sea ice cover in the North Atlantic is disproportionately affecting young harp seals, causing them to strand. The research found no link between genetic diversity and stranding rates, instead highlighting the impact of climate change on younger animals.

SourceDuke University·JournalPLOS ONE·DateJul 22, 2013

Gallo Center scientists identify key brain circuits that control compulsive drinking in rats

Researchers discovered that inhibiting neural pathways between the prefrontal cortex and nucleus accumbens reduces compulsive drinking in rats. The study's findings suggest a potential link to FDA-approved medications targeting these pathways, which could accelerate the development of new treatments for human compulsive drinking.

SourceUniversity of California - San Francisco·JournalNature Neuroscience·DateJul 22, 2013

Putting the brakes on inflammation

A team of researchers has discovered a previously unknown mechanism that prevents the immune system from going into overdrive, shedding light on autoimmune diseases, allergies and chronic inflammation. The discovery could lead to new therapeutics for disorders caused by faulty immune responses.

SourceUniversity of Arizona·JournalImmunity·DateJul 22, 2013

Off-grid sterilization with Rice U.'s 'solar steam'

Researchers at Rice University developed a solar-powered sterilization system using nanomaterials to kill microbes and viruses in human waste. The 'solar steam' technology has an overall energy efficiency of 24 percent, making it suitable for off-grid use and sanitation for billions of people.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateJul 22, 2013

When college diversity delivers benefits: UMD study

A University of Maryland-led study found that socio-economic diversity is essential for promoting a positive campus racial climate. Students with higher levels of interaction with those from different backgrounds reported more contacts with other races and overall mixing with diverse backgrounds.

SourceUniversity of Maryland·JournalAmerican Educational Research Journal·DateJul 22, 2013

Hunting pushing central African forests toward ecological collapse

The study warns that current hunting trends in Central African forests could lead to complete ecological collapse. The authors emphasize the need for sustainable hunting management plans to avoid an environmental catastrophe. Protecting megafauna like elephants and apex predators is crucial to maintaining intact ecosystems.

SourceWildlife Conservation Society·JournalPhilosophical Transactions of the Royal Society of London (B )·DateJul 22, 2013

Study examines use of transthoracic echocardiography

A study of 535 patients undergoing transthoracic echocardiography found that only 31.8% resulted in an active change in care, with most TTEs classified as appropriate yet failing to improve outcomes. The low rate highlights the need for efficient use of healthcare resources while maintaining high-quality care.

SourceJAMA Network·JournalJAMA Internal Medicine·DateJul 22, 2013

Greening of the Earth pushed way back in time

A new study from the University of Oregon has found evidence of life on land dating back 2.2 billion years, four times earlier than previously thought. The discovery of ancient fossils in South African soil provides insight into the 'Great Oxidation Event' that marked a significant rise in oxygen levels in the atmosphere.

SourceUniversity of Oregon·JournalPrecambrian Research·DateJul 22, 2013

Learning a language depends on good connection between regions of the left hemisphere of the brain

A study by researchers from IDIBELL and University of Barcelona found that language learning depends on the structure and function of the arcuate fasciculus, a bundle of nerve fibers connecting auditory regions with motor areas. Individuals with more myelinated connections in this area performed better at word learning.

SourceIDIBELL-Bellvitge Biomedical Research Institute·JournalProceedings of the National Academy of Sciences·DateJul 22, 2013

Teen eating disorders increase suicide risk

A new study found that adolescent girls who experience depressive and anxious symptoms, and have a history of binge eating behaviors, are more likely to report suicidal thoughts. The study suggests that prevention programs targeting individuals at high risk of psychiatric problems could be effective in reducing suicide attempts.

SourceSpringer·JournalPrevention Science·DateJul 22, 2013

Fires in Idaho

NASA's Aqua satellite detected multiple forest fires in Idaho's western region, including the Lodgepole Fire, Ridge Fire, Thunder City fire, and Papoose Fire. The Papoose Fire is currently the largest at 6,504 acres, with containment expected on July 22, 2013.

Chips that mimic the brain

Researchers developed a neuromorphic system that can carry out complex sensorimotor tasks in real time, exhibiting cognitive abilities. The system combines artificial neurons into networks that implemented neural processing modules, closely resembling mammalian brain structures.

SourceUniversity of Zurich·JournalProceedings of the National Academy of Sciences·DateJul 22, 2013

Most flammable boreal forests in North America become more so

Recent decades have seen a dramatic increase in wildfires in the Yukon Flats of Alaska, with fire frequency surpassing the limit seen during the Medieval Climate Anomaly. This shift towards deciduous forests has significant implications for carbon storage and climate warming, as dry deciduous trees can become highly flammable.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalProceedings of the National Academy of Sciences·DateJul 22, 2013

Making big 'Schroedinger cats'

Physicists at the University of Calgary successfully tested quantum mechanics on a large scale, creating a system in two substantially different states at once. This breakthrough demonstrates the application of quantum superposition principles to everyday macro objects.

SourceUniversity of Calgary·JournalNature Physics·DateJul 21, 2013

Hydrogen cars quickened by Copenhagen chemists

Researchers at the University of Copenhagen have developed a new fuel cell design that produces as much electricity as current models but requires significantly less platinum, a rare and valuable precious metal. The discovery, published in Nature Materials, could lead to more economically viable fuel cell production.

SourceUniversity of Copenhagen·JournalNature Materials·DateJul 21, 2013

Antioxidants -- too much of a good thing?

A recent study published in The Journal of Physiology found that high doses of the antioxidant compound resveratrol, commonly found in red wine and supplements, can block cardiovascular benefits of exercise in older men. This counterintuitive result highlights the complex relationship between antioxidants and exercise.

SourceWiley·JournalThe Journal of Physiology·DateJul 21, 2013

A first in front line immunity research

Researchers have characterised the binding of IFNβ proteins to cells, providing a breakthrough in understanding immune response mechanisms. This study offers new avenues for developing treatments with reduced side effects and improved effectiveness.

SourceMonash University·JournalNature Immunology·DateJul 21, 2013

Loss of African woodland may impact on climate, study shows

A study by the University of Edinburgh reveals that deforestation in south-central Africa is driven by population growth and agriculture demands. Sustainable fuel alternatives and reduced burning practices can mitigate this loss, while forest cover north of the Congo basin shows a contradictory trend.

SourceUniversity of Edinburgh·JournalPhilosophical Transactions of the Royal Society of London (B )·DateJul 21, 2013

MS research could help repair damage affecting nerves

A study published in Nature Neuroscience has identified a compound called activin-A that helps trigger the regeneration of protective sheaths around nerve fibers in the brain. This finding could lead to new drug targets for enhancing myelin regeneration and restoring lost function in patients with multiple sclerosis.

SourceUniversity of Edinburgh·JournalNature Neuroscience·DateJul 21, 2013

Sex chromosome shocker: The 'female' X a key contributor to sperm production

A groundbreaking study reveals that nearly 340 genes on the X chromosome contribute to sperm production, surprising scientists who once viewed it as a stable and unchanging chromosome. The research, published in Nature Genetics, uses advanced sequencing methods to assemble the first accurate reference sequence of the human X chromosome.