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Dan Goodman's prediction and politics journal.

Thursday, June 10, 2004

From EurekAlert http://www.eurekalert.org/pubnews.php:
Public Release: 9-Jun-2004
Neurology
Yoga reduces fatigue in MS patients, OHSU study finds
Just six months of yoga significantly reduces fatigue in people with multiple sclerosis (MS), but it has no effect on alertness and cognitive function, says a new Oregon Health & Science University study published in Neurology. The study found that yoga is as good as a traditional aerobic exercise program in improving measures of fatigue, a common and potentially disabling symptom of MS. It was the first randomized, controlled trial of yoga in people with MS.
National Institutes of Health

Public Release: 9-Jun-2004
Circulation: Journal of the American Heart Association
Nitric oxide deficiency raises cardiovascular disease risk in African Americans
African Americans suffer from cardiovascular diseases at a rate about five times higher than the rest of the U.S. population. In a new study, scientists may have found a culprit: a serious deficiency of nitric oxide, a small molecule vital in the regulation of blood flow and blood pressure. The research team, led by Ohio University biochemist Tadeusz Malinski, examined the blood vessel cells of 12 white and 12 black healthy female subjects.

Public Release: 9-Jun-2004
Journal of Neural Engineering
Human subjects play mind games
That's using your brain. For the first time in humans, a team headed by researchers at Washington University in St. Louis has placed an electronic grid atop patients' brains to gather motor signals that enable patients to play a computer game using only the signals from their brains.
National Institutes of Health

Public Release: 9-Jun-2004
Memory fails you after severe stress
People think they'll never forget traumatic experiences, but new research shows that memory is very hazy after severe stress. When military personnel were subjected to severe physical and mental stress in a mock POW camp run by the US military, most failed to identify their interrogators a day or so later. The finding casts serious doubt in the reliability of victim testimonies in cases involving traumatic trauma.

Public Release: 10-Jun-2004
Journal of Physiology
Deciphering the limits to human maximal exercise performance
The main factor limiting maximal exercise capacity is the amount of O2 that can be delivered to the active muscles. Studying elite cross-country skiers, Dr Jose A. Calbet and a team of Scandinavian colleagues led by Professor Bengt Saltin present, in the forthcoming issue of The Journal of Physiology, show that during maximal exercise in the upright position and to avoid hypotension humans must restrain the voracity for blood flow of active muscles.

Public Release: 10-Jun-2004
Ecology Letters
Manipulating biotope space can enhance beneficial biodiversity effects
Using diverse plant mixtures instead of monocultures can increase yield and other ecosystem goods and services on which humans depend. Recent studies showed that such beneficial effects of biodiversity depend on complementarity between species in resource use, as is the case if species root in different soil depths. Scaled up to agricultural systems this means that benefits of intercropping may be greater on deep soils and that soil erosion may reduce intercropping benefits.

Public Release: 10-Jun-2004
Ecology Letters
[full press release]

In the forthcoming issue of Ecology Letters Svenning & Skov use bioclimatic modelling to show that among 55 native European tree species, 36 occupy less than 50% of their climatically suitable range. Many of these species naturalize extensively outside their native ranges, providing support for the conclusion that European tree species ranges are strongly controlled by dispersal limitation despite 10,000 years of relatively stable climate.

In the coming century, the global mean surface temperature is expected to rise an unprecedented 1.4 to 5.8°C. Given the limited climate-tracking exhibited by European tree species during the past 10,000 years, the authors warn that we should expect most of them to be unable to track such dramatic climate changes.

Public Release: 10-Jun-2004
Science
Canine word-learning research published in Science
Dog owners convinced of their pets' grasp of human language may be validated, at least in part, by new research on the word-learning abilities of a German family's Border collie. Scientists who studied a dog with an approximately 200-word "vocabulary" suggest that some aspects of speech comprehension evolved earlier than, and independent from, human speech.

Public Release: 9-Jun-2004
Personality & Social Psychology
Why grandparents prefer certain kin to others
Grandparents systemically prefer some grandchildren to others because of doubts about genetic lineage new Australian research confirms.
____________________________
Power implant aims to run on body heat
The project hopes to tackle a big drawback of life-saving implants
like pacemakers - their batteries running out
http://www.newscientist.com/news/news.jsp?id=ns99995091

Greedy hackers can hog Wi-Fi bandwidth
Linux users can tweak their computers to increase their share of
bandwidth, computer scientists warn
http://www.newscientist.com/news/news.jsp?id=ns99995085

Virtual fences to herd Wi-Fi cattle
A farmer could control multiple herds from a single server at home,
as if he were playing a video game
http://www.newscientist.com/news/news.jsp?id=ns9999507
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