Biomedical engineering students at Johns Hopkins University (www.bme.jhu.edu) have invented an unobtrusive device to measure the force doctors or midwives use when delivering a baby. An electromyographic instrument, the device can measure electrical impulses in the muscles of the user's forearm. A wireless transmitter then sends the data to a computer across the room for assessment.
Although plastics make up only about 11% of all US municipal solid waste, many are actually more energy-dense than coal. Converting these non-recycled plastics into energy with existing technologies could reduce US coal consumption, as well as boost domestic energy reserves, says a new study.
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