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Written by Grayfred Gray
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Tuesday, 25 October 2005 |
Alison Freeman of BBC News, London, tells a fascinating story of Donnachadh McCarthy's decision to provide wind power for his home in Southwark, a London borough. "Mr McCarthy recently installed a solar-powered water heating system, which can power itself for 70% of the time and the wind turbine should also make up the 30% shortfall." The wind generator is expected to produce "up to 600 kilowatt hours every year," enough to light his home as well.
If he can do it in rainy London, surely we could do it most everywhere in the USA. The wind generator and converter to make the electricity into AC costs about $3,548. The wind mill appears to be about 5 feet across.
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Contributed by Editor One
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Tuesday, 04 October 2005 |
Our friend Daniel recently got back in touch after a long period of radio silence:
 As a result of a mountain biking accident, I fractured a spinal vertebra. Luckily, it didn't require surgery, but it kept me lying down for several weeks while the bone began to heal. I wanted access to my computers and the Internet but was frustrated by how much it's assumed that users are sitting up at a desk to use them (try holding a laptop over you and typing on it). So I put together a series of contraptions that would let me work on my back, using combinations of tablets, laptops, voice recognition, wireless trackballs, etc. What's amazing is that once I got it working, I realized how much less strain there is on my neck, back, shoulders and arms compared to sitting up. So much of the source of RSI is in the way we slump in our chairs, holding our arms out in front of us, shoulders rolling forward to pinch nerves at the brachial plexus. None of that happens if you're relaxed on your back, keyboard across your lap.
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Written by Grayfred Gray
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Wednesday, 31 August 2005 |
David Sallisbury reports in an article at Vanderbilt University, "An international team of biomedical engineers has demonstrated for the first time that it is possible to grow healthy new bone reliably in one part of the body and use it to repair damaged bone at a different location."
He says that V. Prasad Shastri, assistant professor of biomedical engineering at Vanderbilt University, who led the effort, said, "We have shown that we can grow predictable volumes of bone on demand,.. And we did so by persuading the body to do what it already knows how to do." Namely to grow more bone as it does in healing from injuries to it.
According to Salisbury, "For people with serious bone disease, it may even be possible to grow replacement bone at an early stage and freeze it so it can be used when needed..."
The technical article is "In vivo engineering of organs: The bone bioreactor" published online by the National Academy of Sciences.
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Contributed by Alexander Phillips
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Tuesday, 16 August 2005 |
Online Newshour carried tonight a special report, Chimeras: Animal-Human Hybrids. Among other things, Hank Greeley, Stanford Law Professor, discussed (in the online publication) why human cells placed in rat brains would not give rise to human characteristics. But even Greeley said that such an experiment in monkeys, which are much closer to humans, would raise ethical issues.
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Contributed by Editor One
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Tuesday, 09 August 2005 |
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Shrode Report
