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Posted Sat May 31 2008: from
New insect repellent last three times longer
To identify the new repellents, the team conducted a rigorous search of a library of compounds known as N-acylpiperidines (related to the active ingredient in pepper), using a brain like computer, called an artificial neural network, to link chemical structure to repellent qualities. They used the neural net to find better versions of DEET, which is able to block the insects' sense of smell. Insects also find DEET unappealing to bite through, and at higher concentrations they tend to avoid contact with DEET. The researchers then tested the 34 best candidates in the laboratory on human volunteers.
[Read more stories about: technical cleverness, bioremediation]

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The ApocaDocs say:
Given the tragic die-off of the bats, the folks in the northeast US will be very interested. Let's test the health effects of this stuff first, though, ok?

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