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Science News Archive April 2014 - Page 25


Page 25 of 32

Graphene nanoribbons as electronic switches

Researchers have discovered conditions under which graphene nanoribbons can function as electronic switches. The study reveals that the transport gap, a critical factor for switch functionality, is inversely proportional to the ribbon's width and independent of crystallographic orientation.

SourceSpringer·JournalThe European Physical Journal B·DateApr 8, 2014

Glucosamine promotes longevity by mimicking a low-carb diet

A recent study found that glucosamine supplementation extended the lifespan of nematode worms by 5% and ageing mice by almost 10%, promoting glucose metabolism and protection against diabetes. This effect is comparable to a low-carb diet, suggesting a potential health benefit for humans.

SourceETH Zurich·JournalNature Communications·DateApr 8, 2014

Rebar technique strengthens case for graphene

Researchers at Rice University have developed a new hybrid material by combining carbon nanotubes with graphene, resulting in improved electrical and mechanical properties. The 'rebar graphene' technique enables large, flexible, conductive sheets of graphene to be manipulated more easily, making it a potential replacement for indium ti...

SourceRice University·JournalACS Nano·DateApr 7, 2014

Movies synchronize brains

Researchers at Aalto University have developed a method to observe immediate changes in brain function during movie viewing. The study found similar brain signals in individuals watching the same movie, suggesting that the contents of the film affected certain brain functions in a similar manner.

SourceAalto University·JournalNeuroImage·DateApr 7, 2014

Green tea boosts your brain

Researchers found that green tea extract increases brain connectivity and improves working memory performance. The study suggests potential clinical applications for treating cognitive impairments in neuropsychiatric disorders like dementia.

SourceUniversity of Basel·JournalPsychopharmacology·DateApr 7, 2014

New ammunition in the fight against type 2 diabetes

A new study by Monash University has shown that gastric banding can lead to remission of diabetes in people who are overweight but not obese. The research, published in The Lancet Diabetes and Endocrinology, found that weight loss surgery significantly improved the condition in over half of participants.

SourceMonash University·JournalThe Lancet Diabetes & Endocrinology·DateApr 7, 2014

Slowdown of global warming fleeting

Researchers at Penn State have redefined the Atlantic Multidecadal Oscillation (AMO), finding that its true signal was likely in a cooling phase in recent decades. This shift may have offset some of the anthropogenic warming, resulting in a temporary slowdown in global warming.

SourcePenn State·JournalGeophysical Research Letters·DateApr 7, 2014

Drink milk? Women who do may delay knee osteoarthritis

New research suggests that women who frequently consume fat-free or low-fat milk may reduce the progression of knee osteoarthritis. The study found that joint space width decreased by 0.38mm, 0.29mm, and 0.26mm in women with increasing milk intake.

SourceWiley·JournalArthritis Care & Research·DateApr 7, 2014

Viewpoint offers details of BRAIN Initiative

The BRAIN Initiative aims to map all cell types in the brain, develop methods for large-scale recordings of neuronal activity, and advance computational methods to understand patterned neural activity. The ultimate goal is to shed light on disease processes and suggest new therapeutic approaches.

SourceJAMA Network·JournalJAMA Neurology·DateApr 7, 2014

Beans, peas, lentils can significantly reduce 'bad cholesterol' and risk of heart disease

A study published in the Canadian Medical Association Journal found that eating just 1 serving of legumes daily can significantly reduce LDL cholesterol by 5%. This reduction may lead to a 5% lower risk of major vascular events. The authors suggest that increasing pulse intake is a reasonable and beneficial dietary change.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateApr 7, 2014

Energizing sick mitochondria with vitamin B3

Researchers at the University of Helsinki found that vitamin B3 form, nicotinamide riboside, can delay the signs of mitochondrial myopathy in animal models. The treatment increased mitochondrial mass and function, curing structural abnormalities and providing a potential therapeutic approach for adult-onset mitochondrial muscle diseases.

SourceUniversity of Helsinki·JournalEMBO Molecular Medicine·DateApr 7, 2014

Antibiotic resistance enzyme caught in the act

Scientists have discovered the atomic-scale mechanism of action for NpmA, an enzyme that imparts chemical changes to bacterial ribosomes, making them resistant to aminoglycoside antibiotics. This finding poses a significant threat to public health, but also reveals potential targets for developing new drugs.

SourceEmory Health Sciences·JournalProceedings of the National Academy of Sciences·DateApr 7, 2014