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Interesting Essays and Research |
British MP Admits National ID Cards Are Expensive Program That Won't Stem Attacks - Aug 4, 2005
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Transparent carbon nanotube sheets created
DALLAS, Aug. 18 (UPI) -- A University of Texas at Dallas-led research team and an Australian colleague have produced strong, transparent carbon nanotube sheets. The transparent carbon nanotube sheets are stronger than the same-weight steel sheets and have demonstrated applicability for organic light-emitting displays, low-noise electronic sensors, artificial muscles, conducting appliques and broad-band polarized light sources that can be switched in one ten-thousandths of a second. Carbon nanotubes are like minute bits of string, and untold trillions of these invisible strings must be assembled to make useful macroscopic articles that can exploit the phenomenal mechanical and electronic properties of the individual nanotubes. Scientists from the NanoTech Institute at the University of Texas at Dallas and Dr. Ken Atkinson, of Commonwealth Scientific and Industrial Research Organization, a national laboratory in Australia, report such assembly of nanotubes into sheets at commercially useable rates in the journal Science.
Ancient origins of TB traced
PARIS, Aug. 18 (UPI) --Researchers have considered tuberculosis a relatively recent human affliction, but a French study finds ancient origins of tuberculosis-causing bacteria. The findings, published in PLoS Pathogens, suggest that M. tuberculosis and related strains recently emerged from a much more ancient bacterial species than previously thought, possibly as old as 3 million years. "Our results change the current paradigm of the recent origin of tuberculosis," says Veronique Vincent, senior author of the study and researcher at Institut Pasteur in Paris. The results may have important future implications for improving diagnosis and treatment of the disease. Most tuberculosis cases are caused by Mycobacterium tuberculosis and it
