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  • 1
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    Seismic anisotropy, flow, and constitution of the upper mantle (1972)
    American Geophysical Union
    In:  Professional Paper, Flow and Fracture of Rocks, Washington, D. C., American Geophysical Union, vol. 16, no. 16, pp. 167-190, (ISBN 1-86239-165-3, vi + 330 pp.)
    Details
    Publication Date: 1972
    Keywords: Physical properties of rocks ; Seismology ; Anisotropy ; earth mantle ; ConvolutionE
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Improvements in Ross type astrometric objectives (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: It is shown that aspheric deformations of the first and fourth elements of the four element Ross objective can be introduced to permit one to obtain improved color corrections for astrometric purposes. The usual monochromatic aberrations are as well corrected as for the standard Ross lens. In addition, one can eliminate or reduce additional aberrations, such as secondary spectrum, chromatic spherical aberration, chromatic coma and chromatic distortion. The resulting objectives are suitable for use as intermediate and long focus astrometric objectives covering large angle fields.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Univ. of South Fla. Conf. on Phot. Astrometric Technique; p 61-84
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Experimental measurements of diffusion coefficients for atomic oxygen (1970)
    In:  CASI
    Details
    Publication Date: 2005-11-27
    Description: Catalytic surface recombination for measuring diffusion coefficients of atomic oxygen
    Keywords: FLUID MECHANICS
    Type: ET. AND THERMODYN. IN HIGH TEMP. GASES 1970; P 63-74
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    NASA TECHNICAL REPORTS
  • 4
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    Aerothermodynamic measurements for space shuttle configuration in hypersonic wind tunnels (1972)
    In:  CASI
    Details
    Publication Date: 2006-07-18
    Description: The effect of shuttle configuration geometry, angle of attack, and free stream flow conditions on the heat-transfer distribution as influenced by three-dimensional effects, the wing-fuselage shock-interaction, and resultant wing-impingement phenomena are examined. In addition, the data provided information regarding the flow field in the vicinity of the nose and boundary layer transition in the plane of symmetry of the fuselage. The data included measurements of the surface pressure, the heat transfer rate distributions, (using models instrumented with thermocouples and models painted with thermographic phosphor) and schlieren and shadowgraph photographs. Posttest photographs of the painted models supplemented the heat transfer data.
    Keywords: THERMODYNAMICS AND COMBUSTION
    Type: Space Shuttle Aerothermodyn. Technol. Conf., vol. 2; p 469-501
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Surface electrical properties experiment (1973)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: The surface electrical properties (SEP) experiment was used to explore the subsurface material of the Apollo 17 landing site by means of electromagnetic radiation. The experiment was designed to detect electrical layering, discrete scattering bodies, and the possible presence of water. From the analysis of the data, it was expected that values of the electrical properties (dielectric constant and loss tangent) of lunar material in situ would be obtained. The basic principle of the SEP experiment is interferometry. This principle involves only the interference of two or more waves to produce an interference pattern. The inversion of the interference pattern in terms of the spatial distribution of the electrical properties is the basic aim of the experiment (fig. 15-1). The experiment is most easily understood in terms of a single dipole antenna for radiating electromagnetic energy and a loop receiver for measuring the magnitudes of the fields.
    Keywords: SPACE SCIENCES
    Type: NASA. Johnson Space Center Apollo 17 Prelim. Sci. Rept.; 14 p
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  • 6
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    Aperiodic behaviour of a non-linear oscillator. (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The aperiodic behavior of the solution of the equation of motion derived previously (1966) when considering a model thermomechanical oscillator is examined. Periodic solutions of this equation are studied numerically and analytically. Conditions for the instability of the solutions are determined. This instability seems to be the cause of the observed aperiodicity.
    Keywords: PHYSICS, GENERAL
    Type: Quarterly Journal of Mechanics and Applied Mathematics; 24; Nov. 197
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  • 7
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    Algae thrive under pure CO2 (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Unicellular hot spring acidophilic alga Cyanidium cadarium cultured in pure carbon dioxide, examining packed cell volume, oxygen production and growth rate
    Keywords: BIOSCIENCES
    Type: ; STITUTION OF RADIO A
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    NASA TECHNICAL REPORTS
  • 8
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    Some results of a short-arc, orbit- determination study related to the GEOS-C altimeter experiment (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Error sources in GEOS-C satellite short arc orbit determination method as determined by altimeter experiment
    Keywords: GEOPHYSICS
    Type: PROC. OF THE GEOS-2 PROGRAM REV. MEETING, VOL. 4 NOV. 1970; P 183-240
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    NASA TECHNICAL REPORTS
  • 9
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    The interaction of interstellar gas with stellar density wave packets (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: We have numerically studied the interaction between interstellar gas and a gravitational perturbation produced by a fluctuation in the stellar mass distribution. For a simple equation of state, shock waves develop even if the gravitational perturbation is aperiodic and transient. In a medium which can change thermal phase, shocks do not form and the gas makes a transition directly to the cold, dense phase. The cold material has an anomalous velocity imparted to it by the gravitational perturbation and it becomes an accretion front moving through the hot gas and capturing it. The accretion fronts trigger thermal phase change on a large scale and can reproduce the extent of observed cold clouds. Furthermore their high mass is favorable to gravitational instability and subsequent star formation.
    Keywords: ASTROPHYSICS
    Type: Astronomy and Astrophysics; 36; 2, No; Nov. 197
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  • 10
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    Self-diffusion in gaseous ammonia (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Self diffusion coefficient for gaseous ammonia at specific temperature range, applying polar gases theory
    Keywords: PHYSICS, GENERAL
    Type: ; ADEMIE DES SCIENCES
    Format: text
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    NASA TECHNICAL REPORTS
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