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Latest David J. Brenner Stories

2013-10-17 10:40:51

Destroys drug-resistant bacteria but safe for human exposure Despite major efforts to keep operating rooms sterile, surgical wound infections remain a serious and stubborn problem, killing up to 8,200 patients a year in the U.S. A study by Columbia University Medical Center (CUMC) researchers suggests that narrow-spectrum ultraviolet (UV) light could dramatically reduce such infections without damaging human tissue. The study, conducted in tissue culture, was published today in the journal...

2011-03-17 07:49:49

(Ivanhoe Newswire) -- The government's efforts to keep the airways safe by subjecting travelers to more scrutiny are facing their biggest backlash since the attacks of Sept. 11, 2001 "“ even as recent terror attempts indicate that air travel remains a prime target for groups linked to al-Qaeda.  The Transportation Security Administration (TSA) has now begun to implement whole-body imaging scanners as a primary screening measure on travelers passing through airport security...

2011-03-16 13:46:53

The Transportation Security Administration (TSA) has begun to use whole-body imaging scanners as a primary screening measure on travelers passing through airport security checkpoints. One type of scanner employs millimeter wave technology, which delivers no ionizing radiation. However, the second type of scanner currently deployed at airports uses backscatter X-rays that expose the individual being screened to very low levels of ionizing radiation. In the April issue of Radiology, two...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.