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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Theoretical description of the reaction rate of an ion-molecule interchange reaction as a function of collision parameters
Calculation of lifetime and transition probability of p-excited states of neon, argon, and krypton
Excited xenon ion charge transfer efficiencies in Xe and oxygen, discussing Xe ion formation in electron impact monitoring
Overlapping of bands of nitrogen oxide, CO and carbon dioxide in 4.5 micron region determined for inversion experiments
Charge transfer cross sections for slow ion production in nitrogen molecular ion beams incident on hydrogen and deuterium
Prebreakdown and breakdown electrical properties of thin film capacitors with certain oxides, fluorides and Teflon dielectrics
Reaction rate constants of ion-molecule interchange reaction as function of temperature, flow velocity, activation energy and constant part of steric factor P
Prebreakdown and breakdown electrical properties and light emission during destructive breakdown in thin film capacitors
Hydrogen oxygen rocket engine two phase liquid hydrogen pump capability and hydrodynamic design, analyzing constant-quality flow, acoustic effects, compressible flow and cavitation
Vacuum UV flash photolysis of carbon suboxide, noting pressure dependent reaction rates of carbon atoms with various gases
Work function measurement for adsorption of diatomic I, Br and Cl on W crystal using electron beam retarding potential method
Evaluation of metallic and nonmetallic construction material performance and reliability after long storage in OF2 and B2H6
Configuration data and design information for a Delta 2914 launched configuration with greatly enhanced telecommunication service over the Part I Delta 2914 configuration is contained. The overall system definition, operations and control, and telecommunication service system, including link budgets are discussed. A brief description of the user transceiver and ground station is presented. A final section includes a summary description of the TDR spacecraft and all the subsystems. The data presented are largely in tabular form.
For abstract, see N75-28103.
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Computer data are provided for tests conducted on a linear cascade of airfoils oscillating in pitch to measure the unsteady pressure response on selected blades along the leading edge plane of the cascade, over the chord of the center blade, and on the sidewall in the plane of the leading edge.
Analysis of the published IUE and ground based high resolution spectra of symbiotic stars, particularly RR Tel, shows that the dominant excitation mechanism of Fe II, Mn II, Ti II, and N I lines is the selective fluorescent excitation of some levels by the strong C IV, N V, and O VI emission lines. The same mechanism should work for the excitation of Fe II lines in the spectra of Seyfert galaxies and Q60's whose emission spectra are quite similar to those of symbiotic stars. The similarities and differences between the fluroescent excitation mechanism reported herein and the Bowen's mechanism is analyzed.
Six key metabolic enzymes plus glutaminase and glutamate decarboxylase, as well as glutamate, aspartate and GABA, were measured in 11 regions of the hippocampal formation of synchronous, flight and tail suspension rats. Major differences were observed in the normal distribution patterns of each enzyme and amino acid, but no substantive effects of either microgravity or tail suspension on these patterns were clearly demonstrated.