Brightsurf Science News & Current Events

July 05, 2004
An out of this world experience at the Royal Society Summer Science Exhibition
UK space scientists are involved in a plethora of spacecraft that are currently exploring the planets, moons and comets in our Solar System.

Protein controls acid in cells by direct detection of volume changes, study finds
A protein responsible for regulating acid levels within cells - and pumping out acid accumulated in cardiac cells after a heart attack - activates in direct response to changes in a cell's volume, according to a new study by researchers at UT Southwestern Medical Center at Dallas.

Ginseng reduces effects of anti-clotting drug
Ginseng, one of the best selling herbal supplements in the United States, interferes with warfarin, a drug commonly used to prevent blood clots.

Patients with severe depression improve using guidelines developed by UT Southwestern researchers
Results from a multiyear study of severely depressed patients treated according to guidelines established by researchers at UT Southwestern Medical Center at Dallas showed a significant improvement in patients' symptoms and medical outcomes.

Arctic yields fresh evidence for Elizabethan gold swindle
Canadian scientists say they've found conclusive proof that a tiny, barren Arctic island was the site of Canada's first, and perhaps greatest, mining fraud.

Climate may play role in lynx's hunting ability
Snow quality may affect the Canadian lynx's ability to kill its prey, according to new research suggesting climate may be impacting one of the most fascinating ecological systems to intrigue biologists for decades.

New technology could transform every train into a high speed cracked rail detector
Researchers in the University of Warwick's Department of Physics have developed a novel non-contact method of using ultrasound to detect and measure cracks and flaws in rail track - particularly gauge corner cracking - that has the potential to simply be attached to a normal passenger or freight train travelling at high speeds.

Tau Ceti system, Asteroid Alley - an inhospitable neighbour
UK astronomers studying the Tau Ceti system have discovered that it contains ten times as much material in the form of asteroids and comets as our own solar system.

Imaging technology may be used to diagnose melancholic depression
Low levels of GABA and high levels of glutamate appear to be strongly associated with a particular type of depression.

Activity of enzyme that affects mood decreased in brains of teenage suicide victims
The activity of a brain enzyme known to affect mood may be decreased in teens who commit suicide, according to an article in the July issue of The Archives of General Psychiatry, one of the JAMA/Archives journals.

Parental supervision may reduce the risk for certain sexually transmitted diseases in adolescents
African American female adolescents who reported that they had high levels of parental supervision had reduced incidence of gonorrhea and chlamydia infections than their peers who reported low parental supervision, according to an article in the July issue of The Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals.

Titan's surface revealed
Piercing the layer of smog enshrouding Titan, these images from the NASA/ESA/ASI Cassini-Huygens spacecraft reveal an exotic surface covered with a variety of materials in the southern hemisphere.

Survival strategies in nature
Field Trials with transgenic wild tobacco (Nicotiana attenuata) reveal new and unexpected insights into plant-herbivore-interactions.

Old is young, study finds
The number of people surviving to an older age more than quadrupled during the early Upper Paleolithic Period, researchers at the University of Michigan and the University of California at Riverside report in the July 5 issue of PNAS.

Annals of Internal Medicine tip sheet for July 6, 2004
Highlights include: 1.) Ginseng reduces blood thinner's effect; 2.) An average of 57 percent of doctors followed handwashing rules; 3.) ACP updates guidelines for treating chronic stable angina.

Study finds plant enzyme function changes with location in cell
Scientists have long thought that individual enzymes have specific, single jobs dependent on their molecular shape.

Chicago teens living in safer neighborhoods less likely to carry concealed firearms
Chicago children and adolescents living in neighborhoods that are safer, more cohesive, and less disordered are less likely to carry firearms, according to a new study in the July issue of The Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals.

Girls more likely than boys to be overexposed to alcohol ads in magazines
In 2002, underage youth saw more alcohol advertising than adults in magazines, and girls were even more exposed to this advertising than boys, according to a study in the July issue of The Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals.
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