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Science News for November 10, 2010


Evolutionary bestseller in image processing

Researchers at the Max Planck Institute of Neurobiology found that fruit flies process optical information in a similar way to vertebrates, separating channels and transmitting parallel image sequences. This efficient system allows the brain to save energy, a theory supported by the consistent wiring across various animal species.

SourceMax-Planck-Gesellschaft·JournalNature·DateNov 10, 2010

NIH scientists unveil mechanisms of immune reconstitution inflammatory syndrome

Researchers discovered that activated T cells play a key role in IRIS, producing excessive interferon gamma and triggering an exaggerated immune response. A new animal model also confirmed the involvement of macrophages in sparking IRIS. These findings may lead to targeted prevention or therapy for HIV patients developing IRIS.

Tetris flashback reduction effect 'not common to all games'

A study found that playing Tetris after viewing traumatic images reduced memory flashbacks in healthy volunteers. However, playing a word-based quiz game increased flashbacks. The researchers suggest that Tetris competes with the brain's perceptual information channel, reducing traumatic memories.

SourcePLOS·JournalPLOS ONE·DateNov 10, 2010

'Toxic toy crisis' requires fresh solutions

A new analysis by ACS Environmental Science & Technology warns of a toxic toys crisis due to hazardous substances in children's products, including lead and cadmium. The report recommends banning or restricting the use of toxic substances and industry-wide measures to ensure product safety.

SourceAmerican Chemical Society·JournalEnvironmental Science & Technology·DateNov 10, 2010

Guardian angels for seeds

A boom in developing chemical coatings is protecting seeds from destructive insects and diseases, with the worldwide market growing at 10-12 percent annually. These new seed treatments, also known as biologic seed defenders, use microorganisms to promote earlier and more vigorous growth.

SourceAmerican Chemical Society·JournalChemical & Engineering News·DateNov 10, 2010

U of A researchers can predict heart transplant patient's health earlier

Researchers at the University of Alberta have developed a new method to analyze biopsies from heart transplant patients by examining their genes, allowing for early prediction of treatment success. This approach uses software algorithms to reduce data to key numbers necessary for diagnosis and prognosis.

SourceUniversity of Alberta Faculty of Medicine & Dentistry·JournalAmerican Journal of Transplantation·DateNov 10, 2010

Campus-community interventions successful in reducing college drinking

A study published in the American Journal of Preventive Medicine found that campus-community interventions were successful in reducing college drinking. The Safer California Universities study showed significant declines in intoxication rates, with students from intervention universities being 6-15% less likely to drink to intoxication...

SourceElsevier Health Sciences·JournalAmerican Journal of Preventive Medicine·DateNov 10, 2010

Potential hemlock hybrids tolerant to invasive hemlock woolly adelgid

Researchers have developed 140 hemlock hybrids that are tolerant to the invasive hemlock woolly adelgid (HWA), a devastating insect affecting eastern US forests. The most tolerant species is T. chinensis and its hybrids, which show good vigor and shape, providing a potential solution for saving US natural ecosystems.

Growing sorghum for biofuel

Researchers at Iowa State University found that single-cropping sorghum grass yields more ethanol than double-cropping systems. The study suggests using sorghum as a sole crop could meet up to 25% of the US energy needs, surpassing corn-based fuels.

SourceAmerican Society of Agronomy·JournalAgronomy Journal·DateNov 10, 2010

'If chronic diseases are ignored we will sleepwalk into a world where healthy people are a minority and unhealthy children die before their parents'

The NCD Alliance warns that ignoring chronic diseases will lead to a future where healthy people are in the minority, while unhealthy children die before their parents. The alliance calls for effective actions on diet, physical activity, risks, and determinants related to non-communicable diseases.

SourceThe Lancet_DELETED·JournalThe Lancet·DateNov 10, 2010

Out-sniffing bomb-sniffing dogs

A Tel Aviv University scientist has developed a small, portable sensor that can detect multiple kinds of explosives with unprecedented reliability and efficiency. The sensor, which uses nanotechnology advances, is more sensitive and reliable than any sniffer dog and can detect explosives at a distance.

SourceAmerican Friends of Tel Aviv University·JournalAngewandte Chemie·DateNov 10, 2010

Primordial dry ice fuels comet jets

Scientists from the University of Maryland's EPOXI mission have discovered that dry ice is the 'jet' fuel for comets, including Hartley 2. The discovery reveals that solar heating of subsurface frozen carbon dioxide is powering the comet's jets, which are rich in CO2 gas and particles of dust and ice.

APHA 2010: College days -- more sedentary days

College students experience a gradual decrease in moderate and vigorous physical activity as they progress through their studies, resulting in increased body mass index and weight. The transition period can lead to weight gain, emphasizing the importance of colleges providing programs and choices to support healthy lifestyle changes.

Looking for wireless? Try a local farm

Researchers at Texas A&M AgriLife Research are developing wireless sensing networks to monitor field conditions in rice and cotton production. The systems use sensors to track temperature, soil moisture, and fiber quality, enabling farmers to make data-driven decisions. This technology has the potential to improve crop management, incr...

SourceTexas A&M AgriLife Communications·JournalComputers and Electronics in Agriculture·DateNov 10, 2010

Multiple fathers prevalent in Amazonian cultures

Researchers found that up to 53 out of 128 studied societies believe in the principle of multiple paternity. Women benefit from this system as secondary fathers provide gifts and support, increasing child survival rates. Men also gain by formalizing alliances through shared wives, strengthening family bonds.

SourceUniversity of Missouri-Columbia·JournalProceedings of the National Academy of Sciences·DateNov 10, 2010

CWRU nurse researcher finds prescribed bed rest has down side for pregnant women

A comprehensive review of 70 research articles finds that prescribed bed rest may have negative effects on pregnant women's physical and emotional health. The study suggests that hospital stays deny women the opportunity to rest in a comfortable environment, potentially leading to depression and post-traumatic shock disorder.

SourceCase Western Reserve University·JournalBiological Research For Nursing·DateNov 10, 2010

Combined approach including taxing unhealthy foods, restricting food advertising and better labeling are among most cost-effective ways to reduce obesity in nations of all incomes

A combined approach of taxing unhealthy foods, restricting food advertising, and improving labeling is cost-effective in reducing obesity in all nations. Implementing such measures would add nearly 7 million life years to the population's health expectancy.

SourceThe Lancet_DELETED·JournalThe Lancet·DateNov 10, 2010

New research from Psychological Science

Researchers discovered that when a person's personality matches the prevalent personalities of others in a culture, it enhances positive effects on self-esteem and well-being. Additionally, social threats induce bodily freeze-like behavior in humans, while cultural differences in spatial representations affect time perception.

SourceAssociation for Psychological Science·JournalPsychological Science·DateNov 10, 2010