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Science News Archive December 2011 - Page 7


Page 7 of 23

Traumatic experiences may make you tough

Research suggests that small amounts of trauma can help individuals develop resilience, contrary to the common notion that traumatic experiences are always detrimental. People who have experienced some negative life events tend to have better outcomes than those with no adverse experiences or those with excessive adversity.

SourceAssociation for Psychological Science·JournalCurrent Directions in Psychological Science·DateDec 16, 2011

Advantages and motivations uncertain behind use of brachytherapy for breast cancer radiotherapy

A study found APBIb use increased from 0.4% to 6.6% between 2000 and 2007, with wide regional disparities and racial/ethnic differences in utilization. The authors suggest unwarranted variation in practice may be present, highlighting the need for further research on APBI effectiveness.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateDec 16, 2011

GDP up, happiness down

A team of scientists from the University of Vermont measured global happiness using Twitter data over three years. The trend shows a gradual downward trend, with drops in happiness following major events and weekly patterns. The researchers propose a tool for real-time monitoring of collective emotions.

SourceUniversity of Vermont·JournalPLOS ONE·DateDec 16, 2011

No brakes on breast cancer cells

Researchers have discovered a microRNA, miR-520, that suppresses NFkappaB and TGF-b signaling pathways in breast cancer cells. This finding suggests that miR-520 may act as a tumor suppressor and could lead to new treatment options for ER-negative breast cancer.

SourceHelmholtz Association·JournalOncogene·DateDec 16, 2011

Study suggests early ART in recently HIV-infected patients preferable to delayed treatment

A new study suggests that immediate antiretroviral therapy (ART) is more beneficial for recently infected HIV patients than deferred treatment. The study found that participants who received ART immediately had better outcomes and were protected from disease progression not only during treatment but also after treatment was stopped.

SourceInfectious Diseases Society of America·JournalThe Journal of Infectious Diseases·DateDec 16, 2011

Can science predict a hit song?

Researchers at the University of Bristol used musical features and machine learning algorithms to predict song hits in the UK singles chart. They found that danceability increased in popularity from the late 1970s and that slower styles, such as ballads, were more likely to become hits in the 1980s.

Remote wilderness polluted by humans

A comprehensive study of 36 lakes in the USA, Canada, Greenland, and Svalbard reveals that biologically active nitrogen from human sources can be traced back to the end of the 19th century. The rate of change has accelerated over the past 60 years, coinciding with the commercialization of artificial fertilizer production.

SourceLund University·JournalScience·DateDec 16, 2011

Novel device removes heavy metals from water

The cyclic electrowinning/precipitation (CEP) system removes heavy metals from water by increasing their concentration, making it possible for a proven metal-removal technique to take over. The automated CEP system can remove up to 99% of copper, cadmium, and nickel, returning the contaminated water to federally accepted standards.

SourceBrown University·JournalChemical Engineering Journal·DateDec 16, 2011

Gene discovered for Weaver syndrome

Scientists have identified a gene mutation in the EZH2 gene that causes Weaver syndrome, a rare genetic disorder characterized by large size at birth and intellectual disability. This breakthrough discovery enables DNA-based diagnostic testing for the disease, providing definitive answers for families seeking a diagnosis.

SourceChild & Family Research Institute·JournalAmerican Journal of Human Genetics·DateDec 15, 2011

A supernova with a view

The study of the closest supernova in 25 years has shed new light on its formation. The team found that the exploding star was a white dwarf, and while they couldn't rule out a white dwarf merger, their results suggest a medium-sized star supplied the white dwarf with extra material to trigger the explosion.

Teens choose water when calorie count of sugary beverages is easier to understand

A new study found that providing clear caloric information about sugar-sweetened beverages may reduce their consumption among adolescents. Researchers discovered that physically presenting calories as physical activity equivalents was most effective in decreasing sugar-sweetened beverage purchases among black adolescents.

SourceJohns Hopkins Bloomberg School of Public Health·JournalAmerican Journal of Public Health·DateDec 15, 2011

A 'fantastic voyage' through the body -- with precision control

A 'fantastic voyage' through the body is now possible with precision control thanks to a new capsule endoscope developed by Tel Aviv University researcher Dr. Gabor Kosa. The device uses MRI technology to navigate the digestive tract, enabling doctors to detect problems and perform biopsies or local drug delivery in a non-invasive manner.

SourceAmerican Friends of Tel Aviv University·JournalBiomedical Microdevices·DateDec 15, 2011

New Research Demonstrates Lean Beef is Good for Heart Health

A new study published in American Journal of Clinical Nutrition found that diets including lean beef every day are as effective in lowering total and LDL 'bad' cholesterol as the 'gold standard' of heart-healthy diets. Participants experienced a 10% decrease in LDL cholesterol from consuming 4.0 oz/day of lean beef daily.

SourcePorter Novelli·JournalAmerican Journal of Clinical Nutrition·DateDec 15, 2011