miércoles, 10 de septiembre de 2014

ScienceDaily: Most Popular News

ScienceDaily: Most Popular News


Rapid and durable protection against Ebola virus with new vaccine regimens

Posted: 08 Sep 2014 12:29 PM PDT

One shot of an experimental vaccine made from two Ebola virus gene segments incorporated into a chimpanzee cold virus vector, called chimp adenovirus type 3 or ChAd3, protected all four macaque monkeys exposed to high levels of Ebola virus 5 weeks after inoculation, report scientists.

Biologists delay the aging process by 'remote control'

Posted: 08 Sep 2014 12:29 PM PDT

Biologists have identified a gene that can slow the aging process when activated remotely in key organ systems. The life scientists, working with fruit flies, activated a gene called AMPK that is a key energy sensor in cells. Increasing AMPK in the intestine increased the fly's life by about 30 percent, and the fly stayed healthier longer as well. The research could have important implications for delaying aging and disease in humans.

Textbook theory behind volcanoes may be wrong

Posted: 08 Sep 2014 12:29 PM PDT

In the typical textbook picture, volcanoes, such as those that are forming the Hawaiian islands, erupt when magma gushes out as narrow jets from deep inside Earth. But that picture is wrong, according to a new study from researchers who conclude that seismology data are now confirming that such narrow jets don't actually exist.

Paleontologists discover new species of titanosaurian dinosaur in Tanzania

Posted: 08 Sep 2014 11:35 AM PDT

Paleontologists have identified a new species of titanosaurian, a member of the large-bodied sauropods that thrived during the final period of the dinosaur age, in Tanzania. Although many fossils of titanosaurians have been discovered around the globe, especially in South America, few have been recovered from the continent of Africa.

Planet forming around star about 335 light years from Earth

Posted: 08 Sep 2014 09:15 AM PDT

Scientists have discovered what they believe is evidence of a planet forming around a star about 335 light years from Earth. Astronomers set out to study the protoplanetary disk around a star known as HD 100546, and as sometimes happens in scientific inquiry, it was by "chance" that they stumbled upon the formation of the planet orbiting this star.

Bacteria from bees possible alternative to antibiotics

Posted: 08 Sep 2014 06:37 AM PDT

Thirteen lactic acid bacteria found in the honey stomach of bees have shown promising results in a series of studies. The group of bacteria counteracted antibiotic-resistant MRSA in lab experiments. The bacteria, mixed into honey, has healed horses with persistent wounds. The formula has previously been shown to protect against bee colony collapse.

Seeing below the surface: Ultra-thin, high-speed detector captures unprecedented range of light waves

Posted: 07 Sep 2014 03:17 PM PDT

Research could lead to light detectors that can see below the surface of bodies, walls, and other objects, with applications in emerging terahertz fields such as mobile communications, medical imaging, chemical sensing, night vision, and security.

Ultraviolet light-induced mutation drives many skin cancers, researchers find

Posted: 07 Sep 2014 03:17 PM PDT

A genetic mutation caused by ultraviolet light is likely the driving force behind millions of human skin cancers, according to researchers. The mutation occurs in a gene called KNSTRN, which is involved in helping cells divide their DNA equally during cell division.

Dynamic duo takes out cellular trash: Research finds how dead cells are removed from body

Posted: 07 Sep 2014 03:06 PM PDT

Scientists have identified how immune cells use two critical receptors to clear dead cells from the body, pointing the way to new autoimmune and cancer therapies. "This basic research focus allowed us to discover a completely new aspect of immune regulation that no one -— including any immunologist—had known about before," said one researcher.

Dietary recommendations may be tied to increased greenhouse gas emissions

Posted: 05 Sep 2014 09:27 AM PDT

If Americans altered their menus to conform to federal dietary recommendations, emissions of heat-trapping greenhouse gases tied to agricultural production could increase significantly, according to a new study.

No association found between wearing bra, breast cancer

Posted: 05 Sep 2014 06:06 AM PDT

A population-based case-control study found no association between bra wearing and increased breast cancer risk among postmenopausal women. "There have been some concerns that one of the reasons why breast cancer may be more common in developed countries compared with developing countries is differences in bra-wearing patterns," said one investigator. "Given how common bra wearing is, we thought this was an important question to address."

How much may German beers be contaminated by microplastics?

Posted: 03 Sep 2014 06:19 AM PDT

If you're going to Oktoberfest next month to enjoy the delights of German beer, you might get more than you bargained for. New research has revealed the extent to which German beers may be contaminated by foreign substances, most notably, microplastics.

Brain circuit differences reflect divisions in social status in macaque monkeys

Posted: 02 Sep 2014 11:42 AM PDT

Life at opposite ends of primate social hierarchies is linked to specific brain networks, research in macaque monkeys has shown. The more dominant you are, the bigger some brain regions are. If your social position is more subordinate, other brain regions are bigger.

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