السبت، 29 ديسمبر 2012

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News

Racial disparities in pediatric appendicitis treatment tied to hospital type

Posted: 28 Dec 2012 10:37 AM PST

A new study describes the role of hospital type in race-based treatment disparities among pediatric appendicitis patients.

Physicists creates 'recipe book' for building new materials

Posted: 28 Dec 2012 10:37 AM PST

By showing that tiny particles injected into a liquid crystal medium adhere to existing mathematical theorems, physicists have opened the door for the creation of a host of new materials with properties that do not exist in nature.

Cave dwelling nettle discovered in China

Posted: 28 Dec 2012 10:37 AM PST

British and Chinese botanists have discovered several new species of nettles growing in the entrance caverns of caves in 0.04 to 3 percent daylight. There has been little exploration of these caves for plants but recent studies are discovering many species new to science.

Early cognitive problems documented among those who eventually get Alzheimer's

Posted: 28 Dec 2012 10:07 AM PST

People who study or treat Alzheimer's disease and its earliest clinical stage, mild cognitive impairment (MCI), have focused attention on the obvious short-term memory problems. But a new study suggests that people on the road to Alzheimer's may actually have problems early on in processing semantic or knowledge-based information, which could have much broader implications for how patients function in their lives.

NASA'S Space Launch System core stage passes major milestone, ready to start construction

Posted: 28 Dec 2012 07:07 AM PST

The team designing America's new flagship rocket has completed successfully a major technical review of the vehicle's core stage. NASA's Space Launch System (SLS) will take the agency's Orion spacecraft and other payloads beyond low-Earth orbit, providing a new capability for human exploration.

Hubble eyes the needle galaxy: IC 2233, one of the flattest galaxies known

Posted: 28 Dec 2012 07:05 AM PST

Like finding a silver needle in the haystack of space, the NASA/ESA Hubble Space Telescope has produced a beautiful image of the spiral galaxy IC 2233, one of the flattest galaxies known.

PhoneSat: Smart, small and sassy

Posted: 28 Dec 2012 07:02 AM PST

The fast-paced proliferation and popularity of mobile devices here on Earth, like smartphones loaded with powerful operating systems, will find a new niche market- this time in space, thanks to NASA's trailblazing PhoneSat project.

56% of female university students get drunk in record time, Spanish study suggests

Posted: 28 Dec 2012 05:40 AM PST

Researchers have studied university students' lifestyles; their analysis, which includes alcohol and illegal drug consumption habits, sport and food, concludes that most students indulge in unhealthy behavior. One of the main results of the study points to the high consumption of alcohol.

More serious earthquakes predicted in the Himalayas

Posted: 28 Dec 2012 05:40 AM PST

Scientists have discovered that massive earthquakes in the range of 8 to 8.5 magnitudes on the Richter scale have left clear ground scars in the central Himalayas. This ground-breaking discovery has huge implications for the area along the front of the Himalayan Mountains, given that the region has a population density similar to that of New York City.

Trying to halt hepatitis C's molecular hijacking

Posted: 27 Dec 2012 02:33 PM PST

Researchers have figured out intimate details of how the hepatitis C virus takes over an invaded cell, a breakthrough that could point to way for new treatments for the virus.

Staphylococcus aureus: Why it just gets up your nose

Posted: 27 Dec 2012 02:33 PM PST

Researchers have identified a mechanism by which the bacterium Staphylococcus aureus colonizes our nasal passages. The study shows for the first time that a protein located on the bacterial surface called clumping factor B has high affinity for the skin protein loricrin.

Disease burden links ecology to economic growth

Posted: 27 Dec 2012 02:33 PM PST

A new study finds that vector-borne and parasitic diseases have substantial effects on economic development across the globe, and are major drivers of differences in income between tropical and temperate countries. The burden of these diseases is, in turn, determined by underlying ecological factors: it is predicted to rise as biodiversity falls. This has significant implications for the economics of health care policy in developing countries, and advances our understanding of how ecological conditions can affect economic growth.

The factor that could determine future breast cancer treatment

Posted: 27 Dec 2012 02:33 PM PST

Australian scientists have shown how a 'transcription factor' causes breast cancer to develop an aggressive subtype that lacks sensitivity to oestrogen and does not respond to anti-oestrogen therapies such as Tamoxifen and aromatase inhibitors. Transcription factors are molecules that switch genes on or off. In this case, the transcription factor known as 'ELF5' inhibits sensitivity to oestrogen very early in the life of a breast cancer cell.

Scientists home in on cause of osteoarthritis pain

Posted: 27 Dec 2012 02:30 PM PST

Researchers have identified a molecular mechanism central to the development of osteoarthritis (OA) pain, a finding that could have major implications for future treatment of this often-debilitating condition.

Cholesterol drug shows promise in fighting effects of malaria

Posted: 27 Dec 2012 02:30 PM PST

Researchers have discovered that adding lovastatin, a widely used cholesterol-lowering drug, to traditional antimalarial treatment decreases neuroinflammation and protects against cognitive impairment in a mouse model of cerebral malaria.
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