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.
Impurities remaining in the metallic copper are identified and quantified by spectrographic and neutron activation analysis. Determination of the type of ore used for the copper artifact places the geographic point of origin of the artifact.
Aggregation caused by flow in macromolecular solutions of biological origin - particle size
Occurrence and origin of lamellae in troilite bodies in iron meteorites
Origin of low-temperature macroscopic elastic limit of body-centered cubic metals
Chemical composition of iron-rich spherules of meteoritic, volcanic, and unknown origin
Flynn Creek crater, Tennessee, geologic history and probable meteoritic impact origin
Framing cameras of rotating mirror type, discussing optical principles used in American, British and Russian high speed cameras developed since original NACA camera
Framing cameras of rotating mirror type, discussing optical principles used in American, British and Russian high speed cameras developed since original NACA camera
Tidal friction theory of lunar origin and dynamic evolution
Contact binaries origin and evolution, discussing orbital angular momentum dissipation through mass ejection along magnetic lines of force
Hypersthene chondrite origin and history studied using noble gas content and shock and reheating by X-ray diffraction
Australasian tektite origin criticized regarding magnitude of atmosphere removal
Deformation in Sudbury structure, Ontario, suggests petrographic evidence for origin by meteorite impact
Origin of large scale structures in universe, discussing instability and primordial-structure hypotheses
Lunar origin related to earth rotational instability due to earth core formation
Earth-moon system origin assuming moon was formed from terrestrial material ejected from earth during rotational instability
Observations related to large-scale structure of interplanetary magnetic field, solar origin, and geomagnetic effects