Shock tube studies of the effects of sharp-rising, long-duration overpressures on biological systems /

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.

Black shoes and blue water : surface warfare in the United States Navy, 1945-1975 /

Mode of access: Internet.

Blue Ridge Music Center, Blue Ridge Parkway, North Carolina, Virginia : interpretive plan.

"NPS D-415"-- P. [3] of cover.

Andrew W. Breidenbach Environmental Research Center.

"April 1990."

Andrew W. Breidenbach Environmental Research Center, Cincinnati.

Mode of access: Internet.

National five digit zip code and post office directory /

Kept up to date by addenda.

Physiographic and geological setting of the Coastal Engineering Research Center's Field Research Facility /

"July 1989."

U.S. Department of Transportation research and development plan /

"This DOT R&D plan is a key enabling element of our Strategic plan"--1st printed p.

Wave climate at selected locations along U.S. coasts /

"January 1977."

Energy spectra in shallow U.S. coastal waters /

"February 1980."

Tables of oblique photo scale factors and nadir point distances for 70mm photography. For unit altitude, focal lengths: 1.5, 3, 6, and 12 inches, tilts: 0 ̊to 90.̊

"Scale factor system, oblique photo, developmental. Contract NOas 59-6067-c, Aeronautics specification XPH 118 (modified)."

HEC-1, flood hydrograph package : the Hydrologic Engineering Center computer program 23-X6-L270.

At head of cover title: 23-70. Generalized computer program.

Study, aircraft weapon system trainer instructor station display and recording systems

Cover title.

Technical memorandum.

Mode of access: Internet.

Analysis of beach sands.

"A contract between Amphibious Branch, Office of Naval Research, U. S. Naval Photographic Interpretation Center, Monitor [and] School of Civil Engineering, Cornell University. Beach accessibility and trafficability, project no. NR 257 001, contract N6onr, task order # 11. Petrographic analysis by Francisco J. Cordova. D. J. Belcher, director."