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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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Porous-glass substrate is used for absorption of a dye used in measuring the concentration of atmospheric ozone at high altitudes. This measurement is based on the chemiluminescence produced in the reaction between ozone and the dye, rhodamine B. The porous glass provides a large interstitial surface area which promotes this reaction.
Isostatic compression process compacts certain powdered aromatic polymers into homogeneous materials that can be machined to form useful components, such as bearings. It provides for complete removal of air in the interstitial spaces surrounding the granules of the powdered polymer before the powder is subjected to isostatic compression.
Interstitial compounds of transition elements prepared for improving oxygen electrode in alkaline hydrox fuel cell
Dispersion strengthened chromium alloys with minimal quantities of interstitial impurities
Recovery of deformed copper-palladium and gold- palladium alloys by isothermal and isochronal annealing, noting vacancy and interstitial migration
Interstitial compounds of transition metals for cathodic oxygen reduction in alkaline hydrogen oxygen fuel cells
Corrosion resistance and anode activity data on interstitial compounds for fuel cell catalysts
Preparation of reduced, mixed metals for synthesis of interstitial compounds for increased efficiency of oxygen electrodes in alkaline H2-O2 fuel cells
Darken-Alcock-Richardson equation for dilute solid solutions of interstitial solutes in binary alloy solvents
Ta wire surface superconductivity in longitudinal magnetic field, discussing effects of strain and interstitial impurities on critical fields
Thermal isolation characteristics of interstitial materials in vacuum environment, inserting materials between contacting metal surfaces at various pressures and temperatures
Electron bombardment produced clustered displacements, paired vacancies and interstitial atoms in Si, discussing possible mechanism for developing defects
Space shuttle systems structural joints thermal control, discussing contact conductance with and without interstitial fillers
Thermal conductance of contacts between dissimilar solids with interstitial fluids, calculating heat flow direction effect by double constriction model
The equilibrium between hydrogen-methane gas mixtures and Fe-Si-C solid solutions has been investigated both as a function of temperature and carburizing gas composition. The thermodynamic properties of the carbon atoms in both b.c.c. and f.c.c. solid solution have been derived from the equilibrium measurements. The results found have been compared with those of earlier investigations and with the predictions of recent theoretical models on ternary solid solutions containing both substitutional and interstitial solute atoms.
Interstitial and intracellular fluid volumes were calculated from measured plasma volume, extracellular volume and total body water of six subjects before and after a 24-hour commercial overseas flight. No change occurred in these spaces or in peripheral hematocrit or total serum protein concentration. The subjective feeling of dehydration and the actual swelling of the lower extremities characteristically found among passengers at the end of a long trip of this type seems to represent a shift in body fluids to the dependent portions of the body rather than water retention or a decrease in the intravascular water volume.
Luna 16 sample G36 is a microbasalt containing skeletal olivine, plagioclase, ilmenite, and interstitial pyroxene. It apparently resulted from very rapid crystallization of a highly fractionated, totally liquid mafic magma. Although different in many details, G36 is generally similar to the ferromagnesian-rich Apollo 11 and 12 basalts. In this respect, it emphasizes the continuing problem of identifying a process on the moon which generated highly mafic magmas.
Literature search on hydrogen absorption effect on palladium alloys revealed existence of alloy compositions in which alpha--beta transition does not take place. Survey conclusions: 40 percent gold alloy of palladium should be used in place of palladium; alloy must be free of interstitial impurities; and metallic surfaces of tube must be clean.