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  • 1
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    A confirmed earthquake in continental Antarctica (1985)
    In:  Geophys. J. R. astr. Soc., Dordrecht, D. Reidel, vol. 81, no. 6, pp. 489-492
    Details
    Publication Date: 1985
    Keywords: Earthquake ; Seismicity ; GJRaS
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Apollo command and service module and lunar module environmental control systems (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The environmental control systems and system requirements of the Apollo command service module and the lunar module are described. The overall performance of both systems during the Apollo program is discussed. Other topics covered include: dust control, EVA provisions, Apollo 13 emergency, component redundancy, modular construction, and subatmospheric design.
    Keywords: AEROSPACE MEDICINE
    Type: Biomedical Results of Apollo; p 517-543
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    NASA TECHNICAL REPORTS
  • 3
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    The liquid rocket booster and its potential for the STS (1989)
    In:  CASI
    Details
    Publication Date: 2006-06-11
    Description: Results of the liquid rocket booster study initiated by NASA to define an alternative to solid rocket boosters, are presented. The prime study contractors, Martin Marietta Corporation and General Dynamics, have identified liquid rocket booster configurations that can increase shuttle performance to 70 klb. These boosters will provide improved reliability, hold down, verification prior to vehicle release, engine-out and abort capabilities. Phasing of these boosters into Space Transportation System (STS) operations without adversely affecting flight rate is described.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: ESA, Progress in Space Transportation; p 405-41
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    NASA TECHNICAL REPORTS
  • 4
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    Enhancements of energetic ions associated with travelling compression regions in the deep geomagnetic tail (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: This paper presents a representative example of an enhancement in energetic ion flux associated with the International Sun-Earth Explorer 3 (ISEE 3) spacecraft's encounter with a traveling compression region (TCR). Data from the energetic particle anisotropy spectrometer (EPAS) instrument on ISEE 3 are studied, along with magnetic field data from the vector helium magnetometer. It is concluded that the ion enhancements seen are spatial in nature, thus supporting the idea that TCRs are the lobe signatures of plasmoids moving along the magnetotail, away from earth.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 92; 64-70
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    NASA TECHNICAL REPORTS
  • 5
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    Dust density and mass distribution near comet Halley from Giotto observations (1986)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The density and the mass spectrum of the dust near comet Halley have been measured by the Giotto space probe's dust impact detection system. The dust spectrum obtained at 291,000 km from the comet nucleus show depletion in small and intermediate masses; at about 600 km from the nucleus, however, the dust activity rises and the spectrum is dominated by larger masses. Most of the mass striking Giotto is noted to reside in the few large particles penetrating the dust shield. Momentum balances and energy considerations applied to an observed deceleration suggest that a large mass of the spacecraft was detached by an impact.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Nature (ISSN 0028-0836); 321; 338-341
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    NASA TECHNICAL REPORTS
  • 6
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    The project EGRET (Energetic Gamma-Ray Experiment Telescope) on NASA's Gamma-Ray Observatory (GRO) (1988)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The design, predicted performance, and scientific objectives of the 20-30,000-MeV gamma-ray telescope EGRET for the NASA GRO spacecraft (scheduled for Space Shuttle launch to a 450-km 28.5-deg orbit in 1990) are reviewed. The other GRO instruments are briefly characterized, including the burst and transient-source experiment, the oriented scintillation spectrometer, and the imaging Compton telescope. EGRET comprises an anticoincidence system, a spark chamber, a triggering telescope, an NaI total-absorption spectrometer, a gas supply capable of refilling the chamber four times, and support electronics. EGRET will operate with energy resolution about 15 percent, effective area about 2000 sq cm, sensitivity about 5 x 10 to the -8th/sq cm sec, angular resolution 0.1-0.4 deg, and FOV about 40 deg FWHM. Observations of Galactic point sources, Galactic and extragalactic diffuse emission, gamma-ray bursts, and solar flares are planned.
    Keywords: ASTRONOMY
    Type: Space Science Reviews (ISSN 0038-6308); 49; 1-2,
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    NASA TECHNICAL REPORTS
  • 7
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    A second supernova inside Puppis A? (1989)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Narrow-band images of an unusual swirl structure located near the center of the Puppis A supernova remnant are presented which reveal three overlapping filamentary systems of highly diverse composition. One is dominated by emission lines of nitrogen, one by oxygen, and one by sulfur. Spectra indicate that these small rings have high velocities and a corresponding kinematic age of less than 800 yr. Heavy-element abundances are extremely high and different in each system, some reminiscent of knots in Cas A, and others of circumstellar matter observed surrounding supernova 1987A. The youth and unusual chemistry lead to the suggestion that a second supernova has exploded within the shell of Puppis A, giving rise to the swirl structure.
    Keywords: ASTROPHYSICS
    Type: Nature (ISSN 0028-0836); 337; 48-50
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    NASA TECHNICAL REPORTS
  • 8
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    Thin film bioreactors in space (1989)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Studies from the Skylab, SL-3 and D-1 missions have demonstrated that biological organisms grown in microgravity have changes in basic cellular functions such as DNA, mRNA and protein synthesis, cytoskeleton synthesis, glucose utilization, and cellular differentiation. Since microgravity could affect prokaryotic and eukaryotic cells at a subcellular and molecular level, space offers an opportunity to learn more about basic biological systems with one inmportant variable removed. The thin film bioreactor will facilitate the handling of fluids in microgravity, under constant temperature and will allow multiple samples of cells to be grown with variable conditions. Studies on cell cultures grown in microgravity would make it possible to identify and quantify changes in basic biological function in microgravity which are needed to develop new applications of orbital research and future biotechnology.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: - Gravitational Biology, Espoo, Finland, July 18-29, 1988) Advances in Space Research (ISSN 0273-1177); 111-117
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    NASA TECHNICAL REPORTS
  • 9
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    E.l.f./v.l.f. emissions observed on Ariel 4 (1975)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The Ariel 4 satellite was designed to study wave-particle phenomena in the magnetosphere by measuring the electromagnetic wave fields over a wide frequency range and the fluxes and pitch angle distributions of energetic particles. We describe here the results of a preliminary study of the various v.l.f./e.l.f. electromagnetic wave phenomena which are observed. These include man-made signals from v.l.f. transmitters, impulsive noise originating in thunderstorms and emissions arising from magnetospheric energetic charged particles.
    Keywords: GEOPHYSICS
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    NASA TECHNICAL REPORTS
  • 10
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    Hyperfine spectroscopy using transverse modulated optical pumping (1976)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Population inversion is observed between the field-independent ground hyperfine states of Rb-87 when using an optical pumping technique which is applicable to a large number of species of atoms and ions. Inversion occurs upon a coherent transfer of angular momentum to the Rb-87 spin system from circularly polarized light propagating in a transverse direction to a magnetic field. Coherence is established by modulating, at certain frequencies, the light intensity or magnetic-field strength.
    Keywords: LASERS AND MASERS
    Type: Optics Communications; 16; Mar. 197
    Format: text
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    NASA TECHNICAL REPORTS
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