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Science News Archive October 2011 - Page 21


Page 21 of 28

Fall market jitters a SAD thing, suggests paper from the Rotman School of Management

A study by Rotman School of Management researchers suggests people with seasonal depression avoid risk in fall and winter, increasing their risk tolerance in spring and summer. The findings have implications for financial planners and traders, highlighting the importance of considering emotional factors in financial decision-making.

SourceUniversity of Toronto, Rotman School of Management·JournalSocial Psychological and Personality Science·DateOct 11, 2011

Men with disabilities 4 times more likely to be sexually abused than men without disabilities

A new study published in the American Journal of Preventive Medicine finds that men with disabilities are at a heightened risk for lifetime and current sexual violence victimization. The study reveals that men with disabilities are more than four times more likely to be victimized by sexual assaults compared to men without disabilities.

SourceElsevier Health Sciences·JournalAmerican Journal of Preventive Medicine·DateOct 11, 2011

More intersections mean less outdoor activity for children

A Queen's University study reveals that high street connectivity and dense intersections in towns and cities reduce children's physical activity levels. The research found youth living in well-connected neighborhoods have lower activity levels compared to those in less connected areas.

SourceQueen's University·JournalInternational Journal of Environmental Research and Public Health·DateOct 11, 2011

Health benefits of broccoli require the whole food, not supplements

A new study published in Journal of Agricultural and Food Chemistry found that key phytochemicals in broccoli are poorly absorbed if taken as a supplement. Cooking broccoli can also reduce its health value. The study suggests that eating whole foods, especially lightly cooked, is necessary to retain adequate levels of essential compounds.

SourceOregon State University·JournalJournal of Agricultural and Food Chemistry·DateOct 11, 2011

Molecular depth profiling modeled using buckyballs and low-energy argon

Researchers used computer simulations to show the effectiveness of an alternative method for molecular depth profiling. The study found that combining buckyball bombardment with low-energy argon creates a smoother surface, allowing for clearer analysis of molecular arrangement. This technique has potential applications in studying huma...

SourcePenn State·JournalThe Journal of Physical Chemistry Letters·DateOct 11, 2011

New testing program improves scores, knowledge retention for third-year internal medicine residents

A new testing program coupled with a year-long clinical experience improved internal medicine resident scores on the Internal Medicine In-Training Exam. The study found that residents who participated in the program showed a significant increase in median individual percentile rank, outperforming control groups by 8.5 percentile points.

SourceUniversity of Cincinnati·JournalJournal of General Internal Medicine·DateOct 11, 2011

Secret of safe sprout production is very clean seeds, expert says

A University of Illinois study found that cleanliness of seeds is crucial in preventing foodborne pathogens in radish, broccoli, and alfalfa sprouts. The study suggests that industry attention to seed cleanliness can help eliminate E. coli and other microorganisms during germination and sprouting.

JCI online early table of contents: Oct. 10, 2011

Studies reveal the role of Sirt1 in improving insulin sensitivity through caloric restriction. Researchers also identify a potential treatment approach for KRAS mutant colorectal cancers by combining receptor tyrosine kinase inhibitors with MEK inhibitors. Additionally, new insights into the cellular defects of Huntington disease are p...

SourceJCI Journals·JournalJournal of Clinical Investigation·DateOct 10, 2011

Seeking superior stem cells

Researchers developed a new method for reprogramming human cells into stem cells, increasing efficiency by 100-fold and producing high-quality cells faster. This breakthrough has potential applications in medicine, such as organ replacement, bone replacement, and treatment of neurodegenerative diseases.

SourceWellcome Trust Sanger Institute·JournalProceedings of the National Academy of Sciences·DateOct 10, 2011

Light can detect pre-cancerous colon cells

Researchers at Duke University have developed a technology that uses angle-resolved low coherence interferometry to detect pre-cancerous cells in the colon. The device shines short bursts of light into tissue samples and analyzes scattered light for signs of dysplasia, with an accuracy rate of 85%.

SourceDuke University·JournalJournal of Biomedical Optics·DateOct 10, 2011

The next stage of heart function testing

A new technique measures myocardial perfusion reserve and volume reserve to predict severe stenosis in coronary arteries. This method detects 50% or greater narrowing with excellent sensitivity, enabling timely intervention for high-risk patients.

SourceSpringer·JournalEuropean Radiology·DateOct 10, 2011

2 seemingly unrelated phenomena share surprising link

Researchers at University of Chicago and Tel Aviv University found a connection between coupled pendulums and compressed elastic films, which concentrate energy into discrete packets called solitons. Solitons are also found in other realms, such as telecommunications, where they travel through optical fibers.

SourceUniversity of Chicago·JournalPhysical Review Letters·DateOct 10, 2011

Gene signature predicts oral cancer recurrence

Researchers have identified a four-gene signature that accurately predicts which patients are at higher risk of oral cancer recurrence. The signature contains genes related to cell invasion and is indicative of an increased risk of recurrence even in patients with no visible signs of cancer.

SourceBMC (BioMed Central)·JournalBMC Cancer·DateOct 10, 2011