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K9 chemistry:a safer way to train detection dogs

机译:K9化学:火车检测犬更安全的方法

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摘要

Trained dogs are incredible chemical sensors,far better at detecting explosives,narcotics and other substances than even the most advanced technological device.But one challenge is that dogs have to be trained,and training them with real hazardous substances can be inconvenient and dangerous.Scientists at NIST(the US National Institute of Standards and Technology) have been working to solve this problem using polydimethylsiloxane(PDMS).PDMS absorbs odours and releases them slowly overtime.Enclose PDMS in a container with an expLosive or narcotic for a few weeks untiL it absorbs the odours,and you can then use it to safely train dogs to detect the real thing.But a few weeks is a long time,and now NIST researchers have developed a faster way to infuse PDMS with vapours.
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