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Now showing items 71-80 of 139
The proteolytic enzymes of Aeromonas proteolytica
(1968)
Work by earlier investigators has indicated that the marine bacterium, Aeromonas proteolytica, produces an extracellular endopeptidase and an extracellular aminopeptidase, both of which have been isolated in highly purified ...
A study of the effect of aggregate characteristics on the behavior of asphaltic mixtures both under static and dynamic loading conditions
(1968)
It has become increasingly evident in recent years that the design of asphalt paving mixtures for use in modern highway and airfield construction should include some fundamental consideration of the dynamic loading conditions ...
A study of the speed of propagation of small amplitude pressure pulses in a two-phase, two-component mixture with an annular flow pattern
(1968)
In a single-phase fluid the critical flow rate is determined by the speed of sound in the fluid, i.e., the speed at which a pressure wave of infinitesimal amplitude is propagated through the single-phase system. Since this ...
An investigation of the nature of microstructural damage in a filled elastomeric compostie material
(1968)
Elastomeric composite materials have been of interest for some time. With the advent of solid rocket propellants, however, a critical need has developed for the evaluation of those mechanical properties needed for structural ...
An experimental investigation of boiling burnout for subcooled carbon tetrachloride under conditions of constrained vapor space volume
(1968)
It has been determined that boiling heat flux densities may be made to exceed maximum pool boiling values for the same pressure and subcooling. Heat flux density elevations of about 50% were measured, and larger values may ...
Factors affecting the digestibility of varieties of sorghum grain by cattle
(1968)
Experiments were conducted to ascertain the digestibility of varieties of sorghum grain by cattle and to identify factors responsible for these differences. In a preliminary experiment, 27 varieties of sorghum grain were ...
An analysis of waveform generation and transmission in longitudinal impact
(1968)
The theory of longitudinal impact and the theory of one-dimensional wave propagation have played important roles in recent advances in the fields of rock drilling and rock mechanics. Of special interest to investigators ...