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Science News for November 29, 2010


From the brain of a locust

Researchers at Tel Aviv University have made a groundbreaking discovery that mechanical stress is instrumental in several key phenomena in neuronal development. The team used insect cells, including those from the desert locust, to build an in vitro nervous system and observe how neurons form a network.

SourceAmerican Friends of Tel Aviv University·JournalBiophysical Journal·DateNov 29, 2010

U of I scientists develop tool to trace metabolism of cancer-fighting tomato compounds

University of Illinois scientists have developed a new tool to study the metabolism of carotenoids in tomatoes, which are believed to provide cancer-preventive benefits. The researchers will use isotopic labeling to trace the absorption and metabolism of three carotenoid compounds in human bodies.

In Lancet: Artesunate suppositories are cost-effective intervention for severe childhood malaria

A study led by Boston University School of Public Health researcher Yesim Tozan found that giving emergency artesunate suppositories to children with suspected severe malaria before referral improves management and is cost-effective. The intervention could avert 37 child deaths and 967 disability-adjusted life-years over five years.

Heat wave deaths highest in early summer

A Yale University study found that the risk of dying from a heat wave is highest when they occur early in the summer and are hotter and longer than usual. The average daily risk of non-accidental death increased by an average of 3.74 percent during heat waves.

SourceYale University·JournalEnvironmental Health Perspectives·DateNov 29, 2010

Chemistry for greenhouse gases

Researchers at Washington University in St. Louis have developed a new metal complex that can convert methane into ethane, a crucial step towards building longer-chain hydrocarbons as alternative energy sources. This breakthrough could pave the way for a cleaner and more sustainable method of producing fuels from greenhouse gases.

SourceWashington University in St. Louis·JournalJournal of the American Chemical Society·DateNov 29, 2010

Duke scientists look deeper for coal ash hazards

A Duke University study identifies new monitoring protocols to accurately measure and predict ecological impacts of coal ash contaminants. The research found that arsenic levels remained high in pore water long after surface waters dropped below safe thresholds, posing significant risks to aquatic life.

SourceDuke University·JournalEnvironmental Science & Technology·DateNov 29, 2010

Subsurface scattering in point-based rendering

A new framework for rendering subsurface scattering on surfaces represented by points is introduced, providing a significant improvement in transparency and realism for translucent materials. The method uses two additional computation passes to simulate the light diffusion phenomenon inside multilayered materials.

SourceScience China Press·JournalScience China Information Sciences·DateNov 29, 2010

Study: Avoidance, poor coping challenge prisoners returning to society

A study of 20 individuals returning to society after prison found that avoidance and problem-focused coping strategies were frequently used but often ineffective in managing barriers. Healthy coping mechanisms, such as emotion-focused strategies, were infrequently employed, contributing to recidivism.

SourceDick Jones Communications·JournalInternational Journal of Offender Therapy and Comparative Criminology·DateNov 29, 2010

New approach may help dialysis patients fight anemia

Researchers have discovered a new treatment option for dialysis-related anemia using FG-2216, which increases erythropoietin (EPO) production in both healthy individuals and patients with end-stage renal disease. The study's findings suggest that the kidneys of dialysis patients retain significant EPO production capacity.

SourceAmerican Society of Nephrology·JournalJournal of the American Society of Nephrology·DateNov 29, 2010

Marsupial embryo jumps ahead in development

Researchers found that marsupial embryos develop forelimbs earlier than expected, using a unique genetic program. This breakthrough suggests that developmental processes may be more flexible than previously thought, allowing for adaptability in marsupials.

SourceDuke University·JournalDevelopment·DateNov 29, 2010

Clarity in short-term memory shows no link with IQ

Researchers at the University of Oregon found that a person's ability to store more items in their short-term memory is linked to higher fluid intelligence as measured by IQ tests. In contrast, the clarity or resolution of those memories shows no relationship with fluid intelligence.

SourceUniversity of Oregon·JournalPsychonomic Bulletin & Review·DateNov 29, 2010

Please blow

A new generator has been developed to produce synthetic breath for evidential breath analyzers, reducing measurement uncertainty in alcohol concentration. The device can also be used to calibrate other sensors with different components.

SourcePhysikalisch-Technische Bundesanstalt (PTB)·JournalChemie Ingenieur Technik·DateNov 29, 2010

How to avoid employee depression in a recession

During economic recessions, anxiety affects job satisfaction and engagement, leading to negative impacts on companies. A model has been formulated to help managers identify and address employee anxiety, implementing actions that improve job satisfaction and organizational commitment.

SourceInderscience Publishers·JournalInternational Journal of Management and Enterprise Development·DateNov 29, 2010

How well is your doctor caring for people with Parkinson's disease? New AAN tool helps measure care

The American Academy of Neurology has developed a new quality measures tool to help doctors gauge how well they are caring for people with Parkinson's disease, focusing on non-motor symptoms such as depression and falls. The measures aim to improve the quality of care for individuals with neurologic disorders like Parkinson's disease.

SourceAmerican Academy of Neurology·JournalNeurology·DateNov 29, 2010

Teenage girls face greater violence threat from poverty

A Cardiff University study reveals that living in a deprived area increases the risk of violence more sharply for girls than boys. The researchers found that assault injury rates were uniformly higher in the most deprived areas, and that the risk to girls was three times more sensitive to material deprivation.

SourceCardiff University·JournalEmergency Medicine Journal·DateNov 29, 2010

Abnormal blood vessel function found in women with broken heart syndrome

Researchers found increased vascular reactivity and decreased endothelial function in women with broken heart syndrome compared to postmenopausal women and those who had regular heart attacks. This unique risk factor highlights the importance of mental stress in ABS syndrome, which may lead to the development of specific therapies.

SourceMayo Clinic·JournalJournal of the American College of Cardiology·DateNov 29, 2010