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Science News Archive May 2009 - Page 13


Page 13 of 22

Researchers gain genome-wide insights into patterns of the world's human population structures

Researchers used sophisticated statistical analyses to study genomic patterns of human population structure, revealing 18 significant axes of variation. These findings provide insights into the history of human evolution, evolutionary forces shaping local populations, and geographic correlations with genetic variation.

SourceUniversity of Washington·JournalAmerican Journal of Human Genetics·DateMay 14, 2009

Brain's organization switches as children become adults

A new study reveals that child brains are differently organized than adult brains, but still capable of performing complex cognitive tasks. Researchers found that young brains have localized networks based on physical proximity, which transition to long-distance networks centered on functionality as children mature.

SourceWashU Medicine·JournalPLOS Computational Biology·DateMay 14, 2009

Bad side of eCommerce recommendation systems: Overemphasis on hits and blockbusters

Research in Management Science reveals that recommender systems can create self-reinforcing cycles favoring popular items, reducing diversity and serving consumers and producers poorly. To mitigate this issue, designers must consider modifications to limit popularity effects and promote exploration in their recommender systems.

DNA gripped in nanopores

A team of researchers used nanopores to investigate the movement of DNA in a gel, finding that larger pores reduce resistance and calculations based solely on electrostatic forces did not accurately predict results. The study's unique combination of techniques offers promising developments in single molecule techniques.

Can happiness be inherited?

A new article published in Elsevier's journal Bioscience Hypotheses proposes that the chemicals generated by our brain during different moods can impact 'germ cells,' altering gene expression and affecting child development. This could have a lasting impact on a child's emotional state, including their happiness.

SourceElsevier·JournalBioscience Hypotheses·DateMay 14, 2009

M. D. Anderson study first to evaluate prevalence, impact of off label chemotherapy in breast cancer

A study by M. D. Anderson Cancer Center researchers found that over one-third of metastatic breast cancer patients receive chemotherapy off-label, with 34.9% of women treated with an unapproved drug at some point during their care. The most common off-label chemotherapies noted were vinorelbine and gemcitabine, both shown to be efficac...

Early and network-oriented care may help adolescents at risk of developing psychosis

A Finnish study suggests that family and network-oriented, stress-reducing care can improve the overall functioning and mental health of adolescents at risk of developing psychosis. The JERI project provides a multiprofessional, community- and family-focused intervention that reduces stress levels and supports adolescents in their natu...

SourceUniversity of Helsinki·JournalEarly Intervention in Psychiatry·DateMay 14, 2009

Would NHS staff go to work during a flu pandemic?

A recent survey of healthcare workers in the UK reveals that up to 85% may stay off work if an influenza pandemic occurs. Factors such as family and caring responsibilities, as well as concerns about training and work environment, significantly impact their willingness to work during a pandemic.

SourceBMC (BioMed Central)·JournalBMC Public Health·DateMay 13, 2009

Ginseng -- nature's anti-inflammatory?

Researchers identified seven ginsenosides with immune-suppressive effects and selectively inhibited expression of the inflammatory gene CXCL-10. The study uses state-of-the-art technologies to define bioactivity and opens up a methodology for studying medicinal herbs.

SourceBMC (BioMed Central)·JournalJournal of Translational Medicine·DateMay 13, 2009

Optimal trip and load planning

The Efficient Load project aims to harmonize capacity utilization and trip planning in a single step, significantly improving truck use and reducing energy costs. The new system is expected to reduce ton-kilometers by 15-20% and integrate seamlessly with existing software.

Golden rice an effective source of vitamin A

Researchers at Baylor College of Medicine and Tufts University found that four units of beta-carotene from Golden Rice convert to one unit of vitamin A in humans. This could help address vitamin A deficiency, a common problem worldwide where rice is a staple food, leading to vision problems or blindness.

SourceBaylor College of Medicine·JournalAmerican Journal of Clinical Nutrition·DateMay 13, 2009

Cold water ocean circulation doesn't work as expected

Researchers used sophisticated floats to show that much of the cold Labrador seawater is diverted eastward by the time it reaches Massachusetts, rather than following a continuous loop with warm surface waters. This finding may affect global warming forecasters and climate signal measurement in the deep ocean.

SourceDuke University·JournalNature·DateMay 13, 2009

University of Arizona research on scorpion antivenom published in NEJM

A study published in NEJM reports that administering scorpion-specific antivenom to children with severe nerve poisoning from scorpion stings results in rapid symptom resolution, often within two hours. The antivenom was effective in treating all 15 children involved in the study, saving lives and reducing treatment costs.

SourceUniversity of Arizona, College of Pharmacy·JournalNew England Journal of Medicine·DateMay 13, 2009