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Science News for July 17, 2012


'Sifting' liquid at the molecular level

Researchers develop method for separating liquids using individual carbon nanotubes, which act as separation channels for chemically distinct molecules. This technology could prove useful in forensic studies and analyzing molecules from single cells, enabling analysis of trace evidence and invisible stains.

SourceDrexel University·JournalScientific Reports·DateJul 17, 2012

Mammography screening shows limited effect on breast cancer mortality in Sweden

A study published in the Journal of the National Cancer Institute found that breast cancer mortality rates in Swedish women aged 40-69 declined at a rate similar to the prescreening period, suggesting limited impact of mammography screening. Researchers note potential limitations, including obesity and population mobility biases.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateJul 17, 2012

Vitamin B12 supplements may help treat hepatitis C

A pilot study found that adding vitamin B12 to standard hepatitis C virus treatment significantly boosts the body's ability to keep the virus at bay, especially in patients with genotype 1 HCV or high viral loads. The treatment strengthened the rate of sustained viral response by 34%.

SourceBMJ Group·JournalGut·DateJul 17, 2012

Female money doesn't buy male happiness

A new study by Patrick Coughlin and Jay Wade found that macho men who accept their partner's higher income have better quality relationships. Conversely, those with traditional masculinity ideologies report low-quality relationships due to the disparity in income.

SourceSpringer·JournalSex Roles·DateJul 17, 2012

Workplace exposure to organic solvents linked to heart defects at birth

Research found associations between exposure to certain organic solvents and an increased risk of heart defects in newborns. The study, published in Occupational and Environmental Medicine, suggests that workplace exposure to organic solvents may be a potential risk factor for several types of congenital heart defects at birth.

SourceBMJ Group·JournalOccupational and Environmental Medicine·DateJul 17, 2012

Unmet needs: Adolescents and young adult cancer patients lack psychological, social support

New research reveals that adolescents and young adult cancer patients often lack access to the necessary psychological, social support, and information resources. Studies found significant proportions of patients in this age group report unmet needs for mental health services, camp programs, and age-appropriate online resources.

Punishment motivated by fairness, not revenge

A study published in Biology Letters found that humans punish cheats only when they end up better off than the punisher, challenging the notion of revenge-based motivation. The researchers aimed to clarify the relationship between punishment and cooperation by investigating underlying motivations.

SourceUniversity College London·JournalBiology Letters·DateJul 17, 2012

Klerman/Freedman Awards

The Brain & Behavior Research Foundation Scientific Council has recognized six exceptional young researchers for their outstanding contributions to mental health research. The awards honor achievements in clinical and basic mental health research, including studies on vascular disease, synaptic dysfunction, and mood disorders.

Certain jobs dads do linked to higher risk of birth defects

Research published in Occupational and Environmental Medicine found that certain jobs carried out by fathers may be linked to an increased risk of birth defects in their babies. Jobs such as mathematicians, physicists, and computer scientists, as well as artists and photographers, were associated with a higher risk of birth defects.

SourceBMJ Group·JournalOccupational and Environmental Medicine·DateJul 17, 2012

Vitamin E may lower liver cancer risk

A recent study published in the Journal of the National Cancer Institute found that high vitamin E intake from diet or supplements is associated with lower liver cancer risk. The analysis included 132,837 individuals and showed a clear inverse dose-response relation between vitamin E intake and liver cancer risk.

SourceVanderbilt University Medical Center·JournalJNCI Journal of the National Cancer Institute·DateJul 17, 2012

Autonomous robot maps ship hulls for mines

Researchers have designed an algorithm that enables robots to navigate and view complex structures on ships, including propellers and shafts, using sonar data. The system can detect small mines as small as an iPod and significantly improves the robot's path length, making it competitive with divers in speed and efficiency.

SourceMassachusetts Institute of Technology·JournalThe International Journal of Robotics Research·DateJul 17, 2012

In search of the key word

Researchers found long-range correlation between letters and words within texts, enabling conclusions about topic connections. Burstiness analysis also reveals representative words in passages.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateJul 17, 2012

Social entrepreneurship for sexual health

A social entrepreneurship approach for sexual health optimization is being explored, focusing on decentralized community delivery and multisectoral networks. The authors argue that this approach has great promise in delivering comprehensive sexual health interventions to most-at-risk populations.

SourcePLOS·JournalPLOS Medicine·DateJul 17, 2012