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Science News for December 18, 2007


Built-in exercise monitor predicts fitness

A study published in European Journal of Applied Physiology found a consistent correlation between actual and perceived exertion in people of all fitness levels. Researchers say an individual's sense of hard work matches the level of physical exertion measured by heart-rate and oxygen uptake.

SourceUniversity of Exeter·JournalEuropean Journal of Applied Physiology·DateDec 18, 2007

Early surgical treatment contributes to better outcomes in gallstone pancreatitis cases

A study published in the Journal of the American College of Surgeons found that early cholecystectomy significantly reduces hospital stays in patients with mild to moderate gallstone pancreatitis. The procedure can benefit both individual patients and hospitals by reducing hospital time by three or four days.

SourceWeber Shandwick Worldwide·JournalJournal of the American College of Surgeons·DateDec 18, 2007

An ambulance man for muscle damage

Researchers have found a naturally occurring protein called CnAß1 that permanently activates calcineurin, increasing muscle stem cell proliferation and regeneration. This uncouples the protein's activity from injury signals, making it a promising candidate for treating muscle damage and wasting.

SourceEuropean Molecular Biology Laboratory·JournalJournal of Cell Biology·DateDec 18, 2007

Childhood exposure to disadvantaged neighborhoods negatively affects verbal ability

A Harvard University study found that living in a severely disadvantaged neighborhood decreases later verbal test scores by about four IQ points, equivalent to missing a year of school. This effect persists even after moving out of the neighborhood, highlighting the importance of addressing social factors beyond economic situation.

SourceHarvard University·JournalProceedings of the National Academy of Sciences·DateDec 18, 2007

Solar cells of the future

Researchers at University of Copenhagen have discovered a new material that can convert up to 30% of solar energy into electricity, twice the current conversion rate. The use of nanotechnology reduces production costs and minimizes energy loss in solar cell transportation.

SourceUniversity of Copenhagen·JournalNature Nanotechnology·DateDec 18, 2007

Evolution tied to Earth movement

Researchers argue that the accelerated uplift of mountains and highlands in East Africa blocked ocean moisture, favoring human ancestors who adapted to walking on two feet. The 'Wall of Africa,' spanning from Ethiopia to South Africa, played a significant role in shaping climate and vegetation.

What's health care like in America's prisons and jails?

Research published in Journal of Correctional Health Care explores the history and future of correctional health care in America's prisons and jails. Inmates often experience inadequate access to quality care, leading to poor health outcomes, and follow-up care after release is also a concern.

SourceSAGE·JournalJournal of Correctional Health Care·DateDec 18, 2007

Fetal surgeon shows for first time that laser procedure may treat vasa previa

A University of South Florida fetal surgeon successfully treated a rare condition where placental blood vessels block the birth canal and can rupture during labor. The laser procedure sealed off the abnormal fetal blood vessels, eliminating prolonged hospitalization and allowing the pregnancy to progress with a vaginal delivery.

SourceUniversity of South Florida (USF Health)·JournalThe Journal of Maternal-Fetal & Neonatal Medicine·DateDec 18, 2007

Weather, risky business for some

A new research project funded by the National Science Foundation aims to improve weather models and analysis for industries such as food, clothing, and energy. The goal is to educate meteorologists on how to apply weather forecasts to real-world business decisions.

Plant geneticists find veritas in vino

Researchers have sequenced the high-quality draft genome of a Pinot Noir grape, providing insights into its relatively small genome and heterozygosity. The discovery offers a treasure trove of variation to investigate gene characteristics and evolution.

SourcePLOS·JournalPLOS ONE·DateDec 18, 2007

Family ties that bind: Maternal grandparents are more involved in the lives of their grandchildren

A recent study found that maternal grandparents were more likely to maintain daily or weekly contact with their grandchildren than paternal grandparents. The research suggests psychological mechanisms rooted in evolutionary history, where women are always related by maternity, making family ties through the mother more significant.

SourceNewcastle University·JournalEvolutionary Psychology·DateDec 18, 2007