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Sunday, April 6, 2014

ScienceDaily: Most Popular News

ScienceDaily: Most Popular News

Off the shelf, on the skin: Stick-on electronic patches for health monitoring

Posted: 03 Apr 2014 06:26 PM PDT

Wearing a fitness tracker on your wrist or clipped to your belt is so 2013. Engineers have demonstrated thin, soft stick-on patches that stretch and move with the skin and incorporate off-the-shelf electronics for sophisticated wireless health monitoring. The patches stick to the skin like a temporary tattoo and incorporate a unique microfluidic construction with wires folded like origami to allow the patch to bend and flex.

Monster 'El Gordo' galaxy cluster is bigger than thought

Posted: 03 Apr 2014 11:18 AM PDT

Astronomers have weighed the largest known galaxy cluster in the distant universe and found that it definitely lives up to its nickname: El Gordo (Spanish for "the fat one"). By precisely measuring how much the gravity from the cluster's mass warps images of far-more-distant background galaxies, a team of astronomers has calculated the cluster's mass to be as much as 3 million billion times the mass of our Sun. The Hubble data show that the cluster is roughly 43 percent more massive than earlier estimates based on X-ray and dynamical studies of the unusual cluster.

Energy breakthrough uses sun to create solar energy materials

Posted: 03 Apr 2014 10:23 AM PDT

Researchers have discovered a way to tap the sun not only as a source of power, but also to directly produce the solar energy materials that make this possible. This breakthrough could make the sun almost a 'one-stop shop' that produces both the materials for solar devices and the eternal energy to power them.

Hummingbirds' 22-million-year-old history of remarkable change is far from complete

Posted: 03 Apr 2014 10:22 AM PDT

The first comprehensive map of hummingbirds' 22-million-year-old family tree -- reconstructed based on careful analysis of 284 of the world's 338 known species -- tells a story of rapid and ongoing diversification. The decade-long study also helps to explain how today's hummingbirds came to live where they do.

Running, cardio activities in young adulthood may preserve thinking skills in middle age

Posted: 02 Apr 2014 01:23 PM PDT

Young adults who run or participate in other cardio fitness activities may preserve their memory and thinking skills in middle age, according to a new study. Middle age was defined as ages 43 to 55 in this study. "These findings are likely to help us earlier identify and consequently prevent or treat those at high risk of developing dementia," researchers said.

New general concept for treatment of cancer

Posted: 02 Apr 2014 10:39 AM PDT

A team of researchers from five Swedish universities has identified a new way of treating cancer. The concept is based on inhibiting a specific enzyme called MTH1, which cancer cells, unlike normal cells, require for survival. Without this enzyme, oxidized nucleotides are incorporated into DNA, resulting in lethal DNA double-strand breaks in cancer cells.

Poor sleep quality linked to cognitive decline in older men

Posted: 31 Mar 2014 02:05 PM PDT

A link between poor sleep quality and the development of cognitive decline over three to four years was found in a new study of older men. Results show that higher levels of fragmented sleep and lower sleep efficiency were associated with a 40 to 50 percent increase in the odds of clinically significant decline in executive function, which was similar in magnitude to the effect of a five-year increase in age. In contrast, sleep duration was not related to subsequent cognitive decline.
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