SEARCH · Engineering Papers
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Ge films crystallinity deposited on Ge substrates in vacuum as function of deposition rate, substrate temperature and thermal treatment and background O pressure
Orthorhombic form of crystalline formylmethionine transfer RNA, obtaining Patterson function from three dimensional X ray diffraction data
Vibrational spectra and structure of oxalyl chloride in crystalline and fluid states, discussing molecular and space group symmetry
Single crystalline mercury elastic constants calculated from propagation velocity measurements of polarized sound waves
Lunar crystalline rock melting at atmospheric pressure under partial oxygen pressure, suggesting crystallization temperature
Apollo 11 lunar crystalline rock samples petrology, discussing shock and other metamorphic effects on mineral structure
Apollo 11 lunar crystalline rock and breccias petrography and luminescent properties, spectral analysis, color, emission bands and shock effects
Apollo 11 lunar crystalline rock, microbreccia and fines compressibilities at room temperature, loading-unloading and pressure volume curves
Vapor deposited titanium dioxide thin films - some properties as function of crystalline phase
Rare earth alloys spin disorder resistivity in crystalline electric field absence and presence
IR and Raman spectra vibrational analysis of crystalline and fluidic oxalyl bromide, explaining observations by two geometrical isomers existence
Cooling history of magma containing spherulite growth forms on basis of morphological variations in glassy and crystalline rocks
Apollo 14 flight Fra Mauro crystalline rocks age measurement, using Ar 40/39 ratio method
Apollo 11 and 12 crystalline rocks petrographical analysis and textural-mineralogical-chemical group classification, considering local stratigraphy reconstruction
Apollo 11 and 12 lunar dust and rocks, determining Be and Cr contents by gas chromatography for comparison with crystalline rocks
ERTS-1 imagery to define geotectonic domains of Southern African crystalline shield
Sample 68415 is one of the few large crystalline rocks returned from Apollo 16. A meaningful age may be obtained if the sample studied represents silicate material which was isotopically homogenized at the last time it was melted. It is also assumed that the constituent phases of the sample have remained closed systems subsequent to that time. The material was crushed and separated into different fractions with the aid of heavy liquids. It was found that the mineral separates are mixtures of at least three distinct phases with intrinsically different Rb/Sr ratios. An age of 3.84 aeon was determined.
Drying, cryogenic cooling, and redrying with high temperature and vacuum techniques, reduces moisture in crystalline solids to less than 0.01%.