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Cardiovascular disease: The mechanics of prosthetic heart valves

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Dec. 20, 2012 — Computer simulations of blood flow through mechanical heart valves could pave the way for more individualized prosthetics.

Every year, over 300,000 heart valve replacement operations are performed worldwide. Diseased valves are often replaced with mechanical heart valves (MHVs), which cannot yet be designed to suit each patient's specific needs. Complications such as blood clots can occur, which can require patients to take blood-thinning medication.

To investigate why such complications occur, Vinh-Tan Nguyen at A*STAR's Institute of High Performance Computing, Singapore, together with scientists at the National University of Singapore and institutions across the USA, have developed a new computer...

New app provides solution when researching animal behaviour

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Dec. 20, 2012 — A primatologist at the University of Kent has developed an app that allows accurate logging of animal behaviour for scientific research.

Animal Behaviour Pro, an iPhone app designed by Dr Nicholas E. Newton-Fisher from the University's School of Anthropology and Conservation, aims to provide students and the research community with a professional-level solution to the difficulties surrounding live coding.

Animal Behaviour Pro allows the researcher to log...

Small, portable sensors allow users to monitor exposure to pollution on their smart phones

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The CitiSense sensors transmit their air quality readings to smart phones. (Credit: Image courtesy of University of California - San Diego)

Dec. 18, 2012 — Computer scientists at the University of California, San Diego have built a small fleet of portable pollution sensors that allow users to monitor air quality in real time on their smart phones. The sensors could be particularly useful to people suffering from chronic conditions, such as asthma, who need to avoid...

Internet outages in the US doubled during Hurricane Sandy

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Dec. 18, 2012 — USC scientists who track Internet outages throughout the world noted a spike in outages due to Hurricane Sandy, with almost twice as much of the Internet down in the U.S. as usual.

Previous research by this team has shown that on any given day, about 0.3 percent of the Internet is down for one reason or another. Just before Hurricane Sandy hit the East Coast, that number was around 0.2 percent in the U.S. (pretty good, by global standards) -- but once the storm...

Children's meetings offline with people met online examined in new study

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Dec. 18, 2012 — Few parents feel entirely comfortable with their children meeting their online acquaintances in real life. But a new study published in the pioneering Journal of Children and Media sets out to put the risks and benefits of such meetings in perspective.

Monica Barbovschi's study uses data collected as part of the cross-national EU Kids Online II project investigating children's experiences of (and parental concerns about) the Internet. As part of the project...