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Science News Archive December 2015 - Page 5


Page 5 of 32

Behavioral studies from mobile crowd-sensing

A new study published in EPJ Data Science found that exercising and spending time outside the home reduces participants' stress levels, while reduced working hours have a minimal effect. The research used data from the StudentLife project at Dartmouth College to validate this approach, which has great promise for future studies.

SourceSpringer·JournalEPJ Data Science·DateDec 22, 2015

Healthy theme park meals?

A new study by Cornell Food & Brand Lab found that nutritionally improved kid's meals at Disney World resulted in 48% of diners opting for the healthier option. The healthier alternatives reduced calories, fat, and sodium by 21.4%, 43.9%, and 43.4%, respectively.

SourceCornell Food & Brand Lab·JournalJournal of the Association for Consumer Research·DateDec 22, 2015

Study: Women can take blood thinners and hormones without higher blood clot, bleeding risk

A study published in the Journal of the American Society of Hematology found that women on blood thinners can take hormone-containing contraception or hormone replacement therapy without an increased risk of blood clots or uterine bleeding. The study analyzed data from 1,888 women and showed similar incidence rates of blood clots and a...

Low zinc levels may suggest potential breast-feeding problems

Research suggests that genetic variation in the ZnT2 protein may be common in women and associated with abnormal zinc levels in breast milk. Women with this variation may have trouble breastfeeding and their milk may contain lower than normal amounts of zinc, posing a risk to exclusively breastfed infants.

SourcePenn State·JournalJournal of Mammary Gland Biology and Neoplasia·DateDec 22, 2015

Neutrons offer guide to getting more out of solid-state lithium-ion batteries

A new neutron study at Oak Ridge National Laboratory reveals promising results that could drastically boost the performance of solid-state electrolytes in lithium-ion batteries, leading to safer and more efficient batteries. The study found a common rule governing how dopants redistribute vacancies in garnet structures, enabling materi...

SourceDOE/Oak Ridge National Laboratory·JournalJournal of Materials Chemistry A·DateDec 21, 2015

A new twist in genetic switches

Rice University researchers found that a master regulator's activity is determined by kinetics, not thermodynamics. The study revealed the 'molecular stripping' process, which quickly stops protein production.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateDec 21, 2015

Wild bee decline threatens US crop production

The US has identified key agricultural regions at high risk for wild bee decline, which could destabilize crop production. The study suggests 39% of croplands face a pollinator shortage, with the Midwest's corn belt and California's Central Valley particularly affected.

SourceUniversity of Vermont·JournalProceedings of the National Academy of Sciences·DateDec 21, 2015

Penn researchers find heart attack patients not always receiving lowest-risk care

Researchers found that transradial rescue PCI was used in only 15% of cases, and those who were most prone to bleeding were more likely to be treated with transfemoral access. The study highlights the 'risk-treatment paradox,' where patients at high risk for a condition are less likely to receive aggressive treatment.

SourceUniversity of Pennsylvania School of Medicine·JournalJournal of the American College of Cardiology·DateDec 21, 2015

Wasp larvae jump to the dark side

Researchers found that wasp larvae jump towards shaded areas to develop, with lower body mass individuals experiencing more jumps. The behavior helps them survive in unfavorable environments, but comes at a cost of increased energy use.

SourceBMC (BioMed Central)·JournalThe Science of Nature·DateDec 21, 2015

Vitamin A quells severity of preemie GI disease in mice

Researchers found that vitamin A converts 'angry' immune cells into inflammation suppressors, reducing the severity of necrotizing enterocolitis in mice. This discovery adds to evidence of vitamin A's anti-inflammatory properties and could lead to new treatments for premature infants with severe bowel disease.

SourceJohns Hopkins Medicine·JournalJournal of Clinical Investigation·DateDec 21, 2015