3/8/2005:

Intermediate Word:  fugacity (a) evanescence  (b) bluster  (c) hyperbole  (d) mephistic  
Difficult Word:
  wanderoo -  (a) walkabout  (b) macaque  (c) itinerant Irish boy  (d) foot-messenger

Pills Further fears over arthritis drug  - BBC  Renewed fears about the safety of arthritis drug Celebrex have been raised after scientists linked it to an increased risk of heart attacks. A Journal of the Royal Society of Medicine study suggested those on the drug had double the heart attack risk. Celebrex is in the same drug family as Vioxx, withdrawn from sale last year. In 2004 at least 600,000 patients were prescribed Celebrex - which is the brand name for celecoxib - in the UK.But doctors are now advised not to give it patients with a heart condition or stroke. Vioxx was voluntarily withdrawn from world markets by drug firm Merck.    
image Brain chip research aims for future movement  - CNN  Matthew Nagel awoke from a two-week coma in the summer of 2001 to learn that he was paralyzed from the neck down. "My mother was right by my side and explained that I got stabbed," he recalled. The BrainGate Neural Interface is being developed by Cyberkinetics Neurotechnology Systems Inc. in Foxborough, Massachusetts. The device is a 4 by 4 millimeter arrangement of 100 electrodes. It is surgically implanted in the motor cortex, the part of the brain responsible for creating movement in the limbs. The implanted chip connects to a small platform protruding from the patient's skull that is linked to an external processor. "Within the first three days I was able to control the cursor pretty much," Nagel said. "When I think back on it, it's kind of a trip to think that my brain signals was controlling a mouse, changing channels on my TV, adjusting the volume, opening e-mails."  

The nanotubes are 30 nanometres across and 4 nm high, shown in cross-section in the foreground and from above in the background (Image: LBNL)

Nanotube networks conjured on crystals - New Scientist  The key to instantly assembling intricate networks of nanotubes has been discovered by scientists armed with some of the most sophisticated microscopes in the world. The phenomenon may one-day help create tiny nano-circuits that let electrons pass through nano-pipes instead of along silicon wires. The researchers watched as copper was deposited onto a layered crystal of vanadium selenide, causing complex networks of nano-piping to suddenly pop up on top of the crystal. Each of the nanotubes is 30 nanometres 30 billionths of a metre across and together they form roughly hexagonal shapes on top of the crystal, each about 100 nanometres in diameter. Such circuits would be many times smaller than today's, allowing greater computer power to be packed into chips of the same dimensions. "Although there is a big step to making a useful device or material, it opens up some interesting possibilities."   




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