September 18, 2008
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Health & Safety Newsletter September 18, 2008 |
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| This Week´s Featured News Stories |
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Silencing nuisance noise with an acoustic cloak
Noise pollution is a key issue facing policy makers in urban areas. In a recent development that might help town planners, researchers have proposed a design for a new sound-proofing device, an acoustic `cloak`, that could be 100 per cent effective. This suggests that, one day, buildings could be adapted to fully protect their inhabitants from external noise. An acoustic cloak is capable of hiding an object from passing sound waves. It works by guiding sound waves around the object to smoothly recombine on the far side, as if the object had not been there. Furthermore, anything inside the ... |
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Air pollution can hinder heart’s electrical functioning
Microscopic particles in polluted air can adversely affect the heart’s ability to conduct electrical signals in people with serious coronary artery disease, researchers reported in Circulation: Journal of the American Heart Association. In a recent study of 48 Boston-area patients, all of whom had coronary artery disease, 24-hour Holter monitors were used to examine electrocardiograms for the conductivity change called an ST-segment depression, which may indicate inadequate blood flow to the heart or inflamed heart muscle. The average 24-hour levels for all pollutants included in ... |
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