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.

Development of a shock-tube driven molecular beam. Contract no. AF 49(638)-793, Mechanics Division, Air Force Office of Scientific Research, Air Research and Development Command, Washington, D. C.

"AFOSR 166."

Interferometric measurement in a shock tube of dissociation rates for air and its component gases.

At head of title: Cornell University, Graduate School of Aeronautical Engineering.

Single-pulse shock tube studies of the kinetics of the reaction N + O [arrow right over arrow left (reversible reaction)] 2 NO between 2000-3000⁰ K,

At head of title: Combustion Dynamics Division, Air Force Office of Scientific Research, ARDC, Washington, D. C., File no. AF 18(600)-1332.

Plasma studies in a shock tube,

"This work was supported by the Air Research and Development Center, Griffis Air Force Base, New York."

Shock tube driver techniques and attenuation measurements,

"Contract AF 18(603)-10, Mechanics Division, Air Force Office of Scientific Research, ARDC, Washington."

Shock-tube measurements of transition probabilities for oxygen and nitric oxide,

Mode of access: Internet.

Table and charts of equilibrium normal-shock and shock-tube properties for pure carbon dioxide with velocities from 1 to 16 km/sec /

Chiefly tables.

Resistance thermometer for heat transfer measurement in a shock tube,

Army Ordinance contract no. DA-04-495-Ord-19.

Shock tube test time limitation due to turbulent wall boundary layer.

At head of title: SSD-TDR-63-78. Report no. TDR-169 (3230-12)TR-3.