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UW Engineers Invent First Tree-Powered Circuit In a first, researchers at the University of Washington in Seattle have developed a completely tree-powered electrical circuit. The nano-scale device-approximately 130 nanometers [a nanometer is one billionth of a meter] in size-consumes just 10 billionths of a watt (10 nanowatts). Unlike the legendary science fair experiment in which a potato-based electric circuit is created using two electrodes (each electrode being a different metal, which react with the starch, causing a potential difference and thus a current), the UW device utilizes electrodes comprised of the same metal, and is able to generate (output) 1.1 volts. “As far as we know, this is the first peer-reviewed paper of someone powering something entirely by sticking electrodes into a tree,” according to paper co-author Babak Parviz, associate professor of electrical engineering at the UW. of this story » Green OptionsPrimary sources Building a new brain? It's easy; What MPs and slime mould have in common; Harry Potter and the Seismic ShocksThe science of slime-ball behaviourThe distance between an amoeba and an MP is even smaller than you thought. Writing in Current Biology, Dr Chris Thompson and Dr Jason Wolf of the University of Manchester argue that every organism is genetically programmed to cheat the system and has to be policed to stop putting its needs ahead of society. Their study of slime mould has shown that even these microscopic organisms respond to competition and are not above cheating in a bid to gain the upper hand. 'Using slime mould allows us to examine social behaviour in its most basic form,' says Thompson. 'Even though they are single cell organisms that just divide, we have shown they do have a complex social life that involves cheating and coercion.'Making a brain? It's not as hard as you might thinkA model that replicates the functions of the human brain is feasible in 10 years, according GuardianYoung People Fuzzy About Drinking Limits Young people are unaware that government guidelines would class them as binge drinkers. This is the finding of Dr Richard Cooke from Aston University and Dr Falko Sniehotta from the University of Aberdeen who will present their research at the Division of Health Psychology, part of the British Psychological Society, annual conference today, 10th September 2009. 325 students completed a questionnaire that tested their understanding of government guidelines on drinking thresholds. Medical News TodayFeelings Of Belonging Affect School Children The extent to which a child feels they belong at home, school and in the community may impact on their physical health as well as their psychological well-being. This is the finding of a paper presented at the British Psychological Society's Division of Health Psychology annual conference at Aston University, today, 10th September 2009. The study was carried out by Fiona Begen and Dr Julie Turner-Cobb from the University of Bath. Medical News TodayNobel Prize winner Norman Borlaug dies at 95 DALLAS (AP) -- Agricultural scientist Norman Borlaug, the father of the 'green revolution' who won the Nobel Peace Prize for his role in combating world hunger and saving hundreds of millions of lives, died Saturday in Texas, a Texas A&M University spokeswoman said. He was 95.... The Arizona RepublicFaith Blinds People To Health Outcome Belief in faith healing could jeopardise recovery from illness. This is the finding of a study presented today, 10th September 2009, at the British Psychological Society's Division of Health Psychology annual conference being held at Aston University, Birmingham. Professor Tony Cassidy from the University of Ulster said: 'For medical treatment to be most effective patients should follow medical or prescribed health advice. Medical News TodaySimon Thirgood Ecologist, biologist, field researcher and expert on mammals and birds of preySimon Thirgood, who has died aged 46 in an extreme storm in Ethiopia, was an outstanding field ecologist, conservation biologist and expert on the predatory behaviour and ecology of birds of prey and large carnivore mammals. At the time of his death he had been setting up a community-based biodiversity project funded by the UK Darwin Initiative, which focused on the conservation of Ethiopia's Afromontane areas, home to endangered animals such as the Ethiopian wolf.Born in Liberia, west Africa, and brought up in Vancouver, Canada, Simon was heavily influenced by his father, JV Thirgood, an outspoken professor of forestry policy at the University of British Columbia. Inspired by his father's insights into the links between nature and human welfare, Simon went to Aberdeen University in 1980 to read zoology. He immersed himself rapidly in academic and social activities there, becoming an adept climber, GuardianSocio-cultural, genetic data work together to reveal health disparities When it comes to health disparities between different groups, how society sees people in terms of race might play a greater role than genetics, according to a new University of Florida study. Topix.netWFU Baptist among safety initiative leaders Wake Forest University Baptist Medical Center is one of the first health systems in the country to join a national effort examining ways to cut down on hospital-acquired infections. Biz JournalNew type of stem cell in the prostate may be a source for prostate cancer, say researchers A new type of stem cell discovered in the prostate of adult mice can be a source of prostate cancer , according to a new study by researchers at the Herbert Irving Comprehensive Cancer Center at Columbia University Medical Center and NewYork-Presbyterian Hospital. Topix.net1 2 3 4 5 |
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