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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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Standard compositions suitable for electron probe microanalysis of various silicates are prepared by coprecipitation of specified salts with colloidal silica to form a gel which is decomposed into a powdered oxide mixture and compressed into thin pellets. These pellets of predetermined standard are compared with a silicate sample to determine its composition.
Aromatic hydrocarbon synthesis by passing methane through silica gel at high temperature
Mass spectrometric analysis of electrolyte degradation during electrolysis in sulfuric acid silica gel cell for oxygen recovery
Synthesis assaying procedure for RNA polymerase in acrylamide gel
Evaluation of electrode pastes for use in electrocardiographs and electroencephalographs found that the one having the desired don-doff properties had to be water soluble or a water dispersible base. Poly /methyl vinyl ether/maleic anhydride/ or starch gels of the gum drop variety are two such bases.
Quantitative analyses on desorbates from silica gel and molecular sieves in regenerative carbon dioxide removal during manned space flight simulation
Ribulose diphosphate carboxylase and phosphoribulokinase activity in chemosynthetic autotrophs Thiobacillus thioparus and Thiobacillus neapolitanus, noting sedimentation and gel filtration characteristics
For environmental control system functions sensitive to atmospheric composition, components are test-operated in helium-oxygen and nitrogen-oxygen mixtures, pure oxygen, and air. Transient heat- and mass-transfer tests are conducted for carbon dioxide adsorption on molecular sieve and for water vapor adsorption on silica gel.
Regenerable adsorption beds for long-term life support systems include synthetic geolite to remove carbon dioxide and silica gel to dehumidify the atmospheric gas prior to its passage through the geolite beds. Bed performance is evaluated from adsorption characteristics, heat and mass transfer, and pressure drop.
Chemical and physical properties of ethylene glycol and silica gel adsorbent
Gel clogging material in earth and space storable propellants
Mathematical model of heat, mass, and momentum relationships in cyclic operation of water vapor electrolytic cell, and equilibrium conditions between gel matrix and vapor
Spore and vegetative cell adenylate kinases of Bacillus subtilis proved indistinguishable by polyacrylamide gel electrophoresis DEAE cellulose chromatography
Device, based on gel-impingement technique, collects microorganism specimens from circulating air streams. Device is useful to air pollution studies involving the collection of airborne microbial specimens.
Chemical analysis of organic trace contaminants in simulated space station atmospheres desorbed from molecular sieve, silicon gel, and catalyst beds
Damkohler analysis of nitrogen-silica gel absorption isotherm in multimolecular range, noting vapor phase transport and absorbed phase diffusivities
Gel permeation chromatography for polymer molecules size /hydrodynamic volume/ separation
Diamond impregnated abrasive cloth eliminated expensive diamond pastes and was economically disposed of to avoid contamination. Cloth was spunbonded nylon, but any napless fabric could be used. Cloth was sprayed with diamond abrasive gel.