644 resultados para faktisk tid


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"TID-5764."

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"Quarterly progress report".

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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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"April 1961."

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AEC Report No. TID-6506 Pt. 1, 2nd ed.

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Some are labeled "Special Issues."

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"November 1956"--Page [i] of cover.

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"Prepared by the Civilian Reactors, Evaluations and Planning Branch, Division of Reactor Development and Consultants."

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"This report represents the observations of the U.S. scientific team that visited the USSR atomic energy installations during the period Oct. 9 through 18, 1959"--Page 8.

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"November 7, 1960."