Hard-sphere solid - Pair distribution functions at high density.
High density form of molecular pair distribution function for rigid spheres system, using cell- cluster technique
Larsen, R. D.↗
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Results for “HARDNESS”
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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Decentralized reproduction of hard copy Final report
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Jones, R. S.↗
Experiment in direct provision of hard copy documentation of aerospace generated technology to potential users Quarterly status reports, 1 Jan. - 1 Jul. 1968
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Mc Gee, G. W.↗
Biology of hard tissue
Conference on bone diseases and regeneration, cellular differentiation, and homeostasis of calcium
Budy, A. M.↗
The response of hard-limiting band pass limiters to PM signals
Output signal to noise ratio of bandpass limiter calculated for phase modulated signal
Chang, J. C.↗
Electron mobility in randomly located hard-core scatterers
Irreversible quantum statistics for electron mobility analysis in low temperature helium
Neustadter, H. E.↗
Payload maximization and mission mode comparison for hard and soft Martian landers.
Mission mode and delivery method influence on payload maximization for Mars capsule system
Howard, D. A.↗
The feasibility of resistance welding in hard vacuum.
Vacuum effects on resistance spot welds in aluminum, stainless steel and titanium alloys, noting X ray and tensile shear test results
Cheever, D. L.↗
The hard solar X-ray spectrum observed from the third orbiting solar observatory.
Solar X-ray events observed by scintillation counter telescope on OSO 3 satellite, discussing X ray spectra during burst initial and decay phases
Hudson, H. S.↗
Structural research on an impact limiter system for Mars ''hub- and tire-'' type hard landers.
Impact limiter system design for Mars landing vehicle noting balsa wood or phenolic honeycomb construction
Knoell, A. C.↗
Hard X-rays from the Crab pulsar.
Pulsed high energy X rays from Crab Nebula pulsar NP 0532 measured by balloon-borne X ray telescope
Floyd, F. W.↗
Observed galactic hard X-ray emission as an indication for cosmic ray heating of instellar HI
Intensity and spectral shape of diffuse X ray emission by galactic disk from cosmic ray heating of interstellar hydrogen
Boldt, E. A.↗
Hard space suit Patent
Space suit using nonflexible material with low leakage and providing protection against thermal extremes, physical punctures, and radiation with high mobility articulation
Vykukal, H. C.↗
Hard tissue as a composite material. I - Bounds on the elastic behavior
Elastic behavior of bone as two phase composite material, using ultrasonically measured hydroxyapatite moduli
Katz, J. L.↗
Evidence from hard X-rays for two-stage particle acceleration in a solar flare
Solar flare two stage particle acceleration from X-ray burst observations, discussing induced electric field and Fermi mechanism
Dennis, B. R.↗
Manufacture and quality control of interconnecting wire hardnesses, Volume 1
A standard is presented for manufacture, installation, and quality control of eight types of interconnecting wire harnesses. The processes, process controls, and inspection and test requirements reflected are based on acknowledgment of harness design requirements, acknowledgment of harness installation requirements, identification of the various parts, materials, etc., utilized in harness manufacture, and formulation of a typical manufacturing flow diagram for identification of each manufacturing and quality control process, operation, inspection, and test. The document covers interconnecting wire harnesses defined in the design standard, including type 1, enclosed in fluorocarbon elastomer convolute, tubing; type 2, enclosed in TFE convolute tubing lines with fiberglass braid; type 3, enclosed in TFE convolute tubing; and type 5, combination of types 3 and 4. Knowledge gained through experience on the Saturn 5 program coupled with recent advances in techniques, materials, and processes was incorporated.
Source record↗
Experiment to measure hard solar and celestial X-rays from the fifth Orbiting Solar Observatory.
In this paper we describe an experiment designed to measure solar and celestial X-rays in the energy range between 15 to 250 keV. The experiment was flown on the fifth Orbiting Solar Observatory which was launched on Jan. 22, 1969. Up to the time of this writing the instrument continues to operate satisfactorily.
Frost, K. J.↗
An upper limit on the hardness of the nonthermal electron spectra produced during the flash phase of solar flares.
The observations of impulsive solar-flare X-rays above 10 keV made with OGO-5 satellite have been analyzed in order to study the variation of the nonthermal electron spectrum from one flare to another. The X-ray spectrum at the maxima of 129 impulsive X-ray bursts is represented by KE to the minus-gamma power photons per sq cm per sec per keV, and the frequency of occurrence of bursts with different values of gamma is studied. It is found that for gamma less than 4.0 the frequency of bursts rapidly decreases with the decrease in the value of gamma. The probability of occurrence of a burst with gamma less than 2.3 is extremely small.
Kane, S. R.↗