937 resultados para Design and Formative Studies of AIED Systems
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National Highway Traffic Safety Administration, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.
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Shock tubes have been used successfully by a number of investigators to study the biological effects of variations in environmental pressures (1,2,3). Recently an unusually versatile laboratory pressurization source became available with the capability of consistently reproducing a wide variety of pressure-time phenomena of durations equal to and well beyond those associated with the detonation of nuclear devices (4). Thus it became possible to supplement costly full-scale field research in blast biology carried out at the Nevada Test Site (5,6) by using an economical yet realistic laboratory tool. In one exploratory study employing pressure pulses of 5 to 10 sec duration wherein the times to max overpressure and the magnitudes of the overpressures were varied, a relatively high tolerance of biological media to pressures well over 150 psi was demonstrated (7). In contrast, the present paper will describe the relatively high biological susceptibility to long duration overpressures in which the pressure rises occurred in single and double fast-rising steps.
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Federal Highway Administration, Office of Engineering and Highway Operations Research and Development, McLean, Va.
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National Highway Traffic Safety Administration, Washington, D.C.
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Mode of access: Internet.
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Transportation Systems Center, Cambridge, Mass.
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pt. 1. Basic studies of rotating stall flow mechanisms.--pt. 2. Investigation of flow-instability sensing devices.
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Inserted "Bibliographic data sheet" lists Gerald H. Adams as editor.
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Accompanied by "Supplement no.1- to DOD and NASA guide: PERT COST: output reports [by] PERT Coordinating Group." (v.) Published: [Washington, For sale by the Supt. of Docs., U.S. Govt. Print. Off.] 1963-
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Prepared under contract (H-2002-R) with the Office of Policy Development and Research, Dept. of Housing and Urban Development, and Architectural and Transportation Barriers Compliance Board.
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Includes bibliography.