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Now showing items 311-320 of 377
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 ...
An experimental and mathematical study of in situ combustion in a segregated system
(1968)
Some of the field pilot studies made to date have indicated that forward combustion proceeds in a segregated manner in oil reservoirs and that surfaces at which combustion is occurring develop both parallel and perpendicular ...
Electron paramagnetic resonance studies of valence tautomer anion radicals and ion-pairing in semiquinones
(1968)
The epr spectral parameters of the monohomocyclooctatetraene anion radical (XXXV) have been found to be relatively insensitive to changes in solvent, temperature, and counterion. The similar geometry of the anion radical, ...
The phyllostomid bats of the genus Carollia Gray
(1968)
The genus Carollia of the family Phyllostomidae is found to comsist of at least four species. These are C. perspicillata (Linnaeus), C. brevicauda (Wied), C. subrufa (Hahn), and C. castanes H. Allen. C. brevicauda has not ...
Estimating a population of pink shrimp by the use of catch per effort and tagging data
(1968)
A study of some methods used to obtain information on the dynamics of the Tortugas pink shrimp (penaeus duorarua) fishery in south Florida is given. Tagging experiments were used together with catch and effort data to find ...