Κυριακή, 22 Ιουνίου 2014

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Gene critical for development of brain motor center found

Posted: 20 Jun 2014 01:33 PM PDT

A research team describes a gene called Snf2h, which is found in our brain's neural stem cells and functions as a master regulator. When they removed this gene early on in a mouse's development, its cerebellum only grew to one-third the normal size. It also had difficulty walking, balancing and coordinating its movements, something called cerebellar ataxia that is a component of many neurodegenerative diseases.

Wealth and greed: How independent boards, managerial discretion, CEO tenure affect shareholder wealth

Posted: 20 Jun 2014 11:39 AM PDT

The pursuit of extreme wealth by top managers can lead to lower performance and loss of shareholder value, a new study finds. But, a powerful board or long CEO tenure can moderate the impact.

Effectiveness of PTSD treatments provided by DOD, VA unknown

Posted: 20 Jun 2014 11:39 AM PDT

The US Department of Defense and US Department of Veterans Affairs should track the outcomes of treatment for post-traumatic stress disorder (PTSD) provided to service members and veterans and develop a coordinated and comprehensive strategy to do so, says a new congressionally mandated report.

NASA selects studies for the asteroid redirect mission

Posted: 20 Jun 2014 11:37 AM PDT

NASA has selected 18 proposals for studies under the Asteroid Redirect Mission Broad Agency Announcement (BAA). These six-month studies will mature system concepts and key technologies and assess the feasibility of potential commercial partnerships to support the agency's Asteroid Redirect Mission, a key part of the agency's stepping stone path to send humans to Mars.

Super-stretchable yarn is made of graphene

Posted: 20 Jun 2014 11:37 AM PDT

Researchers have developed a simple, scalable method of making graphene oxide fibers that are strong, stretchable and can be easily scrolled into yarns with strengths approaching that of Kevlar.

Citing 'urgent, acute' mental health issues, especially in Africa, experts petition gov'ts to act

Posted: 20 Jun 2014 09:04 AM PDT

Calling global mental health problems 'acute and urgent,' leading authorities from 11 countries have published a joint declaration calling for basic mental health care in Africa. Experts call for global mental health objectives to be included among the United Nations' post-2015 Sustainable Development Goals.

Experimentally testing nonlocality in many-body systems

Posted: 20 Jun 2014 09:04 AM PDT

Researchers constructed multipartite Bell inequalities built from the easiest-to-measure quantities, the two-body correlators, which are capable of revealing nonlocality in many-body systems. As these are considered a fundamental resource for quantum information theory, this study will pave a new path towards experimental detection of nonlocality in large composite quantum systems.

No such thing as a 'finished article': The truth behind online news

Posted: 20 Jun 2014 07:31 AM PDT

News delivery and consumption has rapidly changed in the digital era.  No longer print-bound, the BBC, Guardian, Daily Mail and FT use blog format online news delivery, giving live commentary and many edited versions.  Powerful news sources such as Twitter also abound, challenging the more conventional channels to beat to a faster pace.

Don't tell the other team! Is this the ultimate guide to scoring and saving penalties?

Posted: 20 Jun 2014 07:31 AM PDT

As the world once again draws its attention to the FIFA World Cup, fans watch in fervor to see their country take on all-comers, in hopes that they will become the world champion. Surely, no part of the event is more tense, dramatic and exhilarating than the penalty shootout- a situation that often determines who goes through to the next round, and who heads home.

Safe water for the people in Tanzania

Posted: 20 Jun 2014 07:23 AM PDT

Hydraulic engineers and photovoltaics experts have developed a solar filtration system to produce high-quality drinking water from polluted brackish water and tested it successfully in Tanzania. The test results are currently being analyzed. The filter effectively separates undesired substances, bacteria, and viruses.

Major step forward for the world's largest optical/infrared telescope

Posted: 20 Jun 2014 07:23 AM PDT

The next major milestone towards ESO's European Extremely Large Telescope (E-ELT) has been completed. Part of the 3000-meter peak of Cerro Armazones was blasted away as a step towards leveling the summit in preparation for the construction of the largest optical/infrared telescope in the world.

Materials for the building industry: A shape-conscious alloy

Posted: 20 Jun 2014 07:21 AM PDT

When the frame of a pair of glasses is bent out of shape, it's not that easy to return it to its original form. If, however, your spectacles are made of a shape memory alloy then you don't have a problem. Just place the frame in hot water and bingo! – they're as good as new again. Empa researchers have now shown that these materials can also find applications in the building industry. For example in the reinforcement of bridges.

Emerging HIV epidemics among people who inject drugs in the Middle East and North Africa

Posted: 19 Jun 2014 11:22 AM PDT

HIV epidemics are emerging among people who inject drugs in several countries in the Middle East and North Africa. Though HIV infection levels were historically very low in the Middle East and North Africa, substantial levels of HIV transmission and emerging HIV epidemics have been documented among people who inject drugs in at least one-third of the countries of this region, according to research findings.

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