THE STABILITY OF VOLATILES IN THE SOLAR SYSTEM
Study of the stability of volatile ices in short period comet orbits, on the surfaces of jupiter and saturn major satellites, and saturn rings
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Study of the stability of volatile ices in short period comet orbits, on the surfaces of jupiter and saturn major satellites, and saturn rings
Fluid-bed fluoride volatility process recovers uranium from uranium fuels containing either zirconium or aluminum. The uranium is recovered as uranium hexafluoride. The process requires few operations in simple, compact equipment, and eliminates aqueous radioactive wastes.
Volatile liquid positive expulsion system with metallic expulsion diaphragms
Field and laboratory investigations to identify biological precursor molecules in volcanic volatile systems
Volatile liquid pressurization as expulsion method for storable propellants noting in-flight refueling system design parameters
Mass spectrometric method for rapid identification of trace volatile metabolites of respiratory atmosphere contained in isolated incubation flask
Volatile Al, Sc, Co, Y, Zr and rare earth chelates mass spectrometry
Solvent Purity Meter /SPM/ automatically measures the soluble residue in volatile solvents used in cleaning or extraction of oils, greases, and other nonvolatile materials. The SPM gives instantaneous and continuous readout of soluble contaminant residues in concentrations as low as one part per million of solution.
Design, development, fabrication, and testing of flight weight volatile liquid all metal expulsion system for reaction control storable propellants
Volatiles percentage at 1000 C in nitrogen atmosphere for chondrites, considering cosmo-petrological significance of microchondrule coalescence
Identification of volatile contaminants of space cabin materials
Quasi-equilibrium treatment of heterogeneous reactions applied to evaporation rate /desorption/ computation for volatile species formed in oxygen reactions with W, Mo and graphite
Terrestrial basalts and lunar rocks volatile element concentrations comparison, noting relationship to abundance in chondrites
Quasi-equilibrium prediction of rate of volatilization /erosion/ of solid tungsten by reaction with gaseous oxygen at high temperature and low pressure
Lunar rock volatile and siderophile elements, comparing with terrestrial and meteoritic basalts
Lead isotopes volatile transfer in Apollo 11 and 12 lunar soil samples, discussing lunar age estimates
Eighteen achondrites and 4 terrestrial basalts (3 ocean ridge, 1 continental) were analyzed by radiochemical neutron activation analysis for Ag, Au, Bi, Br, Cd, Co, Cs, Cu, Ga, In, Ir, Rb, Se, Tl and Zn. Samples included 7 eucrites, 5 howardites, 2 nakhlites, 2 shergottites, an angrite, and an aubrite. Light and dark portions of the gas-rich meteorites Kapoeta and Pesyanoe were analyzed separately. Nakhlites and shergottites have volatile element abundances similar to those in ocean ridge basalts; eucrites, howardites, and angrites show greater depletions by an order of magnitude and less similar abundance patterns. In terms of a two-component model of planetary accretion, the parent planets contained the following percentages of low-temperature material: eucrites 0.8, nakhlites 38, shergottites 28. Shergottites may be genetically related to L-chondrites. The siderophile element pattern of achondrites resembles that of the moon, but with less extreme depletions.
System has been used for problems such as analysis of volatile metabolities in human blood and urine, analysis of air pollutants, and in tobacco smoke chemistry. Since adsorbent is reusable after porper reconditioning, method is both convenient and economical. System could be used for large scale on-site sampling programs in which sample is shipped to central location for analysis.