21 resultados para Smart material systems

em University of Michigan


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Federal Transit Administration, Washington, D.C.

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Mode of access: Internet.

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Cover title.

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National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.

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Transportation Department, Joint Program Office for Intelligent Transportation Systems, Washington, D.C.

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Federal Transit Administration, Washington, D.C.

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Because the use of filters to sample particulate matter suspended in the upper atmosphere has been investigated and has yielded rather disappointing results, an examination of other methods of upper atmospheric sampling is desirable, and this is the aim of the present report. The nature of any radioactive material, and its relation to the size and composition of the suspended particles is of particular interest.

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Federal Transit Administration, Washington, D.C.

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National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.