science newsletter: Science News SciGuru.com

Τετάρτη 6 Μαρτίου 2013

Science News SciGuru.com

New Player in Electron Field Emitter Technology Makes for Better Imaging and Communications
Scientists make mouse model of human cancer, demonstrate cure
Seniors Who Play Video Games Report Better Sense of Emotional Well-Being
New technique could improve optical devices
Selfish gene may undermine genome police
Herbal defluoridation of drinking water
Health Benefits of Marriage May Not Extend to All

New Player in Electron Field Emitter Technology Makes for Better Imaging and Communications

Posted: 05 Mar 2013 06:18 PM PST

Scientists at the National Institute of Standards and Technology (NIST) and the University of Maryland, College Park, have built a practical, high-efficiency nanostructured electron source. Described in the journal Nanotechnology*, this new, patent-pending technology could lead to improved microwave communications and radar, and more notably to new and improved X-ray imaging systems for security and health-care applications.

Scientists make mouse model of human cancer, demonstrate cure

Posted: 05 Mar 2013 09:37 AM PST

UT Southwestern Medical Center scientists report the first successful blocking of tumor development in a genetic mouse model of an incurable human cancer.

Seniors Who Play Video Games Report Better Sense of Emotional Well-Being

Posted: 05 Mar 2013 08:42 AM PST

New research from North Carolina State University finds that older adults who play video games report higher levels of emotional well-being.

Researchers asked 140 people aged 63 and older how often they played video games, if at all. The study participants then took a battery of tests to assess their emotional and social well-being. 61 percent of study participants played video games at least occasionally, with 35 percent of participants saying they played at least once per week.

New technique could improve optical devices

Posted: 05 Mar 2013 08:24 AM PST

Understanding the source and orientation of light in light-emitting thin films — now possible with energy-momentum spectroscopy — could lead to better LEDs, solar cells, and other devices that use layered nanomaterials.

Selfish gene may undermine genome police

Posted: 05 Mar 2013 08:15 AM PST

Biologists have been observing the “selfish” genetic entity segregation distorter (SD) in fruit flies for decades. Its story is a thriller among molecules, in which the SD gene destroys maturing sperm that have a rival chromosome. A new study reveals a tactic that gives SD’s villainy an extra edge.

Herbal defluoridation of drinking water

Posted: 05 Mar 2013 07:34 AM PST

Researchers in India have developed a filter system based on a medicinal herb, which they say can quickly and easily remove "fluoride" from drinking water. The technology described in the March issue of the International Journal of Environmental Engineering uses parts of the plant Tridax procumbens as a biocarbon filter for the ion.

Health Benefits of Marriage May Not Extend to All

Posted: 05 Mar 2013 07:18 AM PST

Marriage may not always be as beneficial to health as experts have led us to believe, according to a new study.

Researchers made two discoveries that explain why: First, marriage provides less protection against mortality as health deteriorates, even though it does seem to benefit those who are in excellent health. Secondly, married people tend to overestimate how healthy they are, compared to others.