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  • Other Sources  (197)
  • ASTRONAUTICS (GENERAL)  (153)
  • Industrial Chemistry
  • Inorganic Chemistry
  • Seismology
  • 2020-2024
  • 2005-2009
  • 1985-1989
  • 1975-1979  (189)
  • 1950-1954  (8)
  • 1978  (189)
  • 1950  (8)
Collection
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Keywords
Publisher
Years
  • 2020-2024
  • 2005-2009
  • 1985-1989
  • 1975-1979  (189)
  • 1950-1954  (8)
Year
  • 1
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    Digital recording and analysis of broad-band seismic data at the Gräfenberg (GRF)-array (1978)
    In:  J. Geophys., Berlin, Conseil de l'Europe, vol. 44, no. 31, pp. 511-523, pp. B04310, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1978
    Keywords: Seismic arrays ; Broad-band ; Seismology ; Data analysis / ~ processing
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    The foreshock activity of the 1971 San Fernando earthquake, California (1978)
    In:  Bull. Seism. Soc. Am., Amsterdam, Schweizerbart'sche Verlagsbuchhandlung, vol. 68, no. 8, pp. 1265-1279, pp. L12S09, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Earthquake precursor: prediction research ; Fore-shocks ; Earthquake ; Earthquake precursor: statistical anal. of seismicity ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Determination of local magnitude, Ms-2dlus0, from strong-motion accelerograms (1978)
    In:  Bull. Seism. Soc. Am., Tokyo, Tokyo University, vol. 68, no. 2, pp. 471-485, pp. 2265, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Details
    Publication Date: 1978
    Keywords: Strong motions ; Seismology ; BSSA ; local Magnitude
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Seismological aspects of the Guatemala earthquake of February 4, 1976 (1978)
    In:  J. Geophys. Res., Tokyo, Tokyo University, vol. 83, no. 2, pp. 3427-3434, pp. 2265, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Details
    Publication Date: 1978
    Keywords: Earthquake ; Seismology ; JGR
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    The February 9, 1971 San Fernando earthquake: A study of source finiteness in teleseismic body waves (1978)
    In:  Bull. Seism. Soc. Am., Basel, Elsevier Science Publishers, vol. 68, no. 8, pp. 1-29, pp. L15S20, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Teleseismic events ; Earthquake ; Source ; Seismology ; Source parameters ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    A procedure for estimating lateral variations from low-frequency eigenspectra data (1978)
    In:  Geophys. J. R. astr. Soc., Reykjavík, Icelandic Meteorological Office, Ministry for the Environment University of Iceland, vol. 52, no. 5, pp. 441-455, pp. TC1011, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Data analysis / ~ processing ; Spectrum ; Spectral analysis ; Inhomogeneity ; GJRaS
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    BIBLIOGRAPHY SEISMOLOGY
  • 7
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    Quantification of earthquakes (1978)
    In:  Nature, Tokyo, Tokyo University, vol. 271, no. 2, pp. 411-414, pp. 2265, (ISSN 0016-8548, ISBN 3-510-50045-8)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Source parameters ; Magnitude ; Review article
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    BIBLIOGRAPHY SEISMOLOGY
  • 8
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    Transient and impulse responses of a one-dimensional linearly attenuating medium - II. A parametric study (1978)
    In:  Geophys. J. R. astr. Soc., Luxembourg, Conseil de l'Europe, vol. 52, no. 3, pp. 503-524, pp. B04202, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Attenuation ; Frequency ; GJRaS
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    BIBLIOGRAPHY SEISMOLOGY
  • 9
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    The Romanian earthquake of March 4, 1977. I. Rupture process inferred from fault-plane solution and multiple-event analysis (1978)
    In:  J. Geophys., Warszawa, American Geophysical Union, vol. 44, no. 1+2, pp. 203-218, pp. L08304, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Fracture ; Fault plane solution, focal mechanism ; Source ; Earthquake ; Seismology ; Moment tensor ; EUROPROBE (Geol. and Geophys. in eastern Europe) ; Muller ; Stoeckel ; Stockel
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    BIBLIOGRAPHY SEISMOLOGY
  • 10
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    Transfer functions for the seismic research observatory seismograph system (1978)
    In:  Bull. Seism. Soc. Am., New York, August, vol. 68, no. 1, pp. 501-512, pp. 1610, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Transfer function ; SRO ; Instruments ; Seismic networks ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 11
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    Dynamic support of the outer rise (1978)
    In:  Geophys. Res. Lett., Hannover, Conseil de l'Europe, vol. 5, no. 6, pp. 321-324, pp. L04301, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Seismology ; Stress ; GRL
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    BIBLIOGRAPHY SEISMOLOGY
  • 12
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    Slow earthquakes and stress redistribution (1978)
    In:  Nature, Basel, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 275, no. 4, pp. 599-602, pp. L14311, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Stress ; silent ; red ; Source
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    BIBLIOGRAPHY SEISMOLOGY
  • 13
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    Moment tensor inversions and source models (1978)
    In:  Geophys. J. R. astr. Soc., Leyden, Noordhoff International Publishing, vol. 52, no. B2, pp. 359-364, pp. B04306, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Moment tensor ; Source ; SModelling ; GJRaS
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    BIBLIOGRAPHY SEISMOLOGY
  • 14
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    Seismische Kriterien zur Standortwahl kerntechnischer Anlagen in der Bundesrepublik Deutschland (1978)
    Bundesanstalt f. Geowissenschaften und Rohstoffe
    In:  Hannover, Bundesanstalt f. Geowissenschaften und Rohstoffe, vol. 113, no. XVI:, pp. 1-14, (ISBN 1-56670-263-3)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Engineering geophys. ; Earthquake risk ; Earthquake hazard
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    BIBLIOGRAPHY SEISMOLOGY
  • 15
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    Dynamics in prestressed media with moving boundaries: A continuum theory of failure in solids (1978)
    In:  Geophys. J. R. astr. Soc., Amsterdam, Elsevier Scientific Publishing Company, vol. 52, no. 12, pp. 65-96, pp. 1390
    Details
    Publication Date: 1978
    Keywords: Seismology ; Fracture ; GJRaS
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    BIBLIOGRAPHY SEISMOLOGY
  • 16
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    Earthquake aftershocks as Green's functions (1978)
    In:  Geophys. Res. Letters, Münster, 3, vol. 5, no. 6, pp. 1-4, pp. L23301, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Source ; Aftershocks ; Green's function ; GRL
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    BIBLIOGRAPHY SEISMOLOGY
  • 17
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    Q of the Earth (1978)
    In:  J. Geophys. Res., Luxembourg, EGS-Gauthier-Villars, vol. 83, no. 6717, pp. 5869-5882, pp. 2324
    Details
    Publication Date: 1978
    Keywords: Attenuation ; Absorption ; Scattering ; Seismology ; Earth rotation ; Earth tides ; Quality factor ; JGR
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    BIBLIOGRAPHY SEISMOLOGY
  • 18
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    The influence of rupture incoherence on seismic directivity (1978)
    In:  Bull. Seism. Soc. Am., Luxembourg, Conseil de l'Europe, vol. 68, no. 8, pp. 283-300, pp. L15S17, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Source parameters ; Fracture ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 19
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    Regional variation of the scaling law of earthquake source spectra (1978)
    In:  Bull. Seism. Soc. Am., Taipei, Elsevier, vol. 68, no. 3, pp. 49-79, pp. TC1002, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Source ; Spectrum ; Scaling ; Nuclear explosion ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 20
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    Radiant flux as a guide to relative seismic efficiency (1978)
    In:  Tectonophys., Dordrecht, D. Reidel, vol. 51, no. 5, pp. T39-T46, pp. TC5003, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Energy (of earthquakes) ; Source parameters ; Magnitude ; FROTH ; (abstract)
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    BIBLIOGRAPHY SEISMOLOGY
  • 21
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    Multivariate autoregressive representation of seismic signals with application to short-period discrimination (1978)
    In:  Bull. Seism. Soc. Am., Warszawa, EGS, vol. 68, no. 3, pp. 735-756, pp. L02611, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Filter- ; Auto-Regressive Moving Average-process ; Discrimination ; High frequency ... ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 22
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    Recent seismometrical works in Japan (1978)
    Center for Acad. Publ. Japan
    In:  Bull., Open-File Rept., Earthquake Precursors, Tokyo, Center for Acad. Publ. Japan, vol. 65, no. 1, pp. 69-78, (ISBN 1-86239-165-3, vi + 330 pp.)
    Details
    Publication Date: 1978
    Keywords: Earthquake precursor: prediction research ; Seismology ; Project report/description ; Review article
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    BIBLIOGRAPHY SEISMOLOGY
  • 23
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    A study of the stability of solutions of the inverse problem of seismology in the geometrical optics approximation (1978)
    In:  Vychislitel'naya Seismogogiya, Luxembourg, Conseil de l'Europe, vol. 11, no. B7, pp. 111-133, pp. 2131, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Inversion
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    BIBLIOGRAPHY SEISMOLOGY
  • 24
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    Simulation of strong-motion displacements using surface-wave modal superposition (1978)
    In:  Bull. seism. Soc. Am., Washington, D.C., AGU, vol. 68, no. 1, pp. 907-922, pp. 2090, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Synthetic seismograms ; Surface waves ; NOModelling ; Layers ; Strong motions ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 25
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    Spectral analysis of the coda waves from local earthquakes (1978)
    In:  Bull. Earthq. Res. Inst. (Tokyo), Taipei, EGS, vol. 53, no. 12, pp. 1-48, pp. L12306, (ISSN: 1340-4202)
    Details
    Publication Date: 1978
    Keywords: Spectral analysis ; Seismology ; Scattering
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    BIBLIOGRAPHY SEISMOLOGY
  • 26
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    Seismological precursors to a magnitude 5 earthquake in the Central Aleutian Islands (1978)
    Center for Akad. Publ. Japan
    In:  Professional Paper, Earthquake Precursors, Tokyo, Center for Akad. Publ. Japan, vol. 4, no. 231, pp. 243-250, (ISBN 1-4020-1729-4)
    Details
    Publication Date: 1978
    Keywords: Earthquake precursor: prediction research ; Earthquake precursor: statistical anal. of seismicity ; Seismology ; Earthquake ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 27
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    Lokalisierung von Erdbeben in Medien mit beliebiger Geschwindigkeits-Tiefen-Verteilung unter Einschluß späterer Einsätze und die Hypozentren im Bereich des südlichen Oberrheingrabens von 1971 bis 1975 (1978)
    Fakultät für Physik
    In:  Dissertation, Universität Karlsruhe, Fakultät für Physik, vol. 10, no. WS-693 7-83, pp. 235-239, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Location ; Seismology ; Velocity ; Hypocentral depth ; Earth model, also for more shallow analyses ! ; Velocity depth profile
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    BIBLIOGRAPHY SEISMOLOGY
  • 28
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    Wavelet processing (1978)
    In:  Seventh Annual IPA Convention, Atlanta, Soc. Explorat. Geophys., vol. C 560, 183 pp., no. 8, pp. 480-482, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Waves ; Seismology ; Wavelet processing
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    BIBLIOGRAPHY SEISMOLOGY
  • 29
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    A relation between seismic moment and stress drop of complex earthquakes (1978)
    USGS, Open file Rep. 78-380 and Inst. Phys. du Globe, Univ. Paris VI, IPG No. 275
    In:  Proc. Conf. III, Fault Mechanics and its Relation to Earthquake Prediction, Nat. Earthq. Hazard Reduction Program, 1-3.12.1977, Hanscom Air Force Base, USGS, Open file Rep. 78-380 and Inst. Phys. du Globe, Univ. Paris VI, IPG No. 275, vol. C 560, 183 pp., no. PL-TR-91-2212(II), pp. 319-337, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Stress ; Earthquake precursor: prediction research ; seismic Moment ; Stress drop ; FROTH, ; FRUMMEL
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    BIBLIOGRAPHY SEISMOLOGY
  • 30
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    Seismic monitoring at The Geysers geothermal field, California (1978)
    U.S. Geol. Surv.
    In:  Open-File Report, Potsdam, U.S. Geol. Surv., vol. C 560, 183 pp., no. 78 (?), pp. 1448-1451, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Seismic networks ; Geothermics ; Seismology
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    BIBLIOGRAPHY SEISMOLOGY
  • 31
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    Untersuchungen zur Ortung von Herden seismischer Ereignisse, dargestellt an Beispielen aus einem Stationsnetz (1978)
    Inst. f. Geophys., Ruhr-Univ. Bochum
    In:  Dissertation, Berichte Reihe A, Aachen, Inst. f. Geophys., Ruhr-Univ. Bochum, vol. 10, no. 6, pp. 429-433, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Seismic networks ; Location ; Induced seismicity ; Rock bursts (see also ERDSTOSS and GEBIRGSSCHLAG)
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    BIBLIOGRAPHY SEISMOLOGY
  • 32
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    Sonograms of SRO broad-band recorded events (1978)
    MIT Lincoln Lab.
    In:  Semiannual Technical Summary Report, Lexington, Mass., MIT Lincoln Lab., vol. 10, no. 87-437, pp. 9, 29-31, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Seismology ; PIC ; son ; SRO ; Broad-band ; Seismic networks
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    BIBLIOGRAPHY SEISMOLOGY
  • 33
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    Focal mechanism studies in the New Madrid seismic zone (1978)
    In:  Bull. Seism. Soc. Am., Zagreb, Conseil de l'Europe, vol. 68, no. 4, pp. 1095-1102, pp. L02307, (ISSN 0343-5164)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Fault plane solution, focal mechanism ; Source parameters ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 34
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    Erdbeben in der Bundesrepublik Deutschland 1974 (1978)
    Seismologischen Zentralobservatorium Gräfenberg
    In:  Berichte der seismologischen Observatorien in der Bundesrepublik Deutschland mit einem Katalog wichtiger Weltbeben, Oslo, Seismologischen Zentralobservatorium Gräfenberg, vol. 10, no. 421, pp. 1-24, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Earthquake catalog ; Germany ; Seismic networks ; Seismology
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    BIBLIOGRAPHY SEISMOLOGY
  • 35
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    Hypocenter location program HYPOInversionSE (1978)
    U. S. Geol. Surv.
    In:  Open-File Report, Hannover, U. S. Geol. Surv., vol. C 560, 183 pp., no. 78-694, pp. 1-113, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: Seismology ; Location ; Hypocentral depth ; software ; USGS
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    BIBLIOGRAPHY SEISMOLOGY
  • 36
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    Ermittlung der Krustenstruktur in der Umgebung des seismologischen Zentralobservatoriums Erlangen aus Spektren von P-Wellen (1978)
    Inst. f. Geophys., Univ.
    In:  Diplomarbeit, Hamburg, Inst. f. Geophys., Univ., vol. C 560, 183 pp., no. PL-TR-91-2130, pp. 1-113, (ISBN 3-933346-037)
    Details
    Publication Date: 1978
    Keywords: P-waves ; CRUST ; Seismology ; Seismic arrays ; Spectrum
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    BIBLIOGRAPHY SEISMOLOGY
  • 37
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    On humanity's role in space (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Manned spaceflight is considered within the framework of two broad categories: human exploitation of space for economic or scientific gain, and human habitation of space as a place where man may live, grow, and actualize himself. With the advent of the Space Shuttle, exploitation of space will take the form of new product development. This will continue during the 1990s as the new products are manufactured on a scale large enough to be profitable. The turn of the century should see major industries in space, and large space habitats. Thus, the question of mankind's existential needs arises. In addition to basic physical needs, the spiritual and cultural requirements of human beings must be considered. The impact of man's presence in space upon human culture in general is discussed with reference to international cooperation, public interest in space programs, scientific advancement, the basic urge to explore, and the density of mankind as a whole; which will become free of external constraints as we step into the cosmos.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Spaceflight; 20; Feb. 197
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    NASA TECHNICAL REPORTS
  • 38
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    Assess II - A simulated mission of Spacelab (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: For Assess II, the Spacelab mission simulation conducted in mid-1977, four payload specialists aboard a Convair 990 research aircraft performed six American and six European experiments during nine research flights each of six hours duration in order to evaluate the compatibility of training and experimental design. Mission organization and some initial data from the European experiments are reported. The experiments, conducted over the western U.S., involved infrared astronomy, solar brightness temperature, lidar, airglow TV, and a medical experiment for which physiological parameters were monitored. Conclusions concerning general principles of experiment design are discussed.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Nature; 275; Sept. 7
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    NASA TECHNICAL REPORTS
  • 39
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    New luster for space robots and automation (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Consideration is given to the potential role of robotics and automation in space transportation systems. Automation development requirements are defined for projects in space exploration, global services, space utilization, and space transport. In each category the potential automation of ground operations, on-board spacecraft operations, and in-space handling is noted. The major developments of space robot technology are noted for the 1967-1978 period. Economic aspects of ground-operation, ground command, and mission operations are noted.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Astronautics and Aeronautics; 16; Sept
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    NASA TECHNICAL REPORTS
  • 40
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    New works in space (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Goods and services that may be furnished by the Space Shuttle are described. A single multibeam antenna array capable of supplying satellite communication for 256 U.S. cities, a disaster warning network, and a TV link to remote areas is discussed. Attention is also given to such materials processing programs as crystal growth (for example, production of mercuric iodide crystals for gamma-ray detectors), eutectic growth of solid-solution crystals such as mercury-cadmium-telluride, manufacture of uniform latex spheres for medical applications, and development of small glass spheres for fusion power applications. In addition to the Space Telescope, a meter-class telescope on the Shuttle and a wide-field survey instrument are under study.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Astronautics and Aeronautics; 16; Jan. 197
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    NASA TECHNICAL REPORTS
  • 41
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    Collision frequency of artificial satellites - The creation of a debris belt (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The probability of satellite collisions increases with the number of satellites. In the present paper, possible time scales for the growth of a debris belt from collision fragments are determined, and possible consequences of continued unrestrained launch activities are examined. Use is made of techniques formerly developed for studying the evolution (growth) of the asteroid belt. A model describing the flux from the known earth-orbiting satellites is developed, and the results from this model are extrapolated in time to predict the collision frequency between satellites. Hypervelocity impact phenomena are then examined to predict the debris flux resulting from collisions. The results are applied to design requirements for three types of future space missions.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Journal of Geophysical Research; 83; June 1
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    NASA TECHNICAL REPORTS
  • 42
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    The exploration of comets (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: The structure and origin of comets are reviewed with reference to future cometary research involving fly by and rendezvous missions. Ion-driven spacecraft, to be launched from a Shuttle in the mid-1980s, will theoretically be able to make close observations of Halley's Comet, and fly on to either Tempel 2 or Borelly's Comet during the course of the same mission. A rendezvous, whereby the spacecraft follows a comet in its path around the sun, is considered preferable to a fly by, which will allow only a few hours of observation. Suggested equipment for comet research include IR sensors, X- and Gamma-ray spectrometers, and possibly SEM to analyze the composition of cometary dust particles.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Technology Review; 80; Mar
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    NASA TECHNICAL REPORTS
  • 43
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    COBE - Explorer of the primeval explosion (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The Cosmic Background Explorer satellite will measure the diffuse microwave and infrared emission from the universe over the entire wavelength range from a few microns to 13 mm with unprecedented sensitivity and accuracy. It will measure the spectrum and angular distribution of the cosmic background radiation thought to be remnant of the big bang explosion, and it may also detect the radiation produced by the primal stars and galaxies. Furthermore, it will gather a large body of data permitting detailed study of the distribution, spectra, and temperature of the interstellar and interplanetary dust.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Astronautics and Aeronautics; 16; Oct. 197
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    Vacuum in the wake of space vehicles (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Vacuum conditions to be encountered in the wakes of high altitude unmanned space vehicles are calculated in order to demonstrate possibilities for conducting experiments using the high pumping speeds and very high vacuum (down to 10 to the -15th torr) attainable. The flux of ambient particles backscattered by emissions from spacecraft surfaces is modelled for an idealized Long Duration Exposure Facility spacecraft structure in an orbit of 550 km altitude. The total backscattered fluxes are found to be between 3 x 10 to the 4th and 3 x 10 to the 5th per sq cm sec for H and between 10 to the 6th and 10 to the 7th per sq cm sec for He and O, depending on the angle with respect to the wake axis. It is found that the direct ambient hydrogen flux is an order of magnitude greater than the backscattered flux, while the backscattered fluxes of He and O are greater than the direct fluxes. It is pointed out that care should be taken in designing space experiments to enable these theoretical conditions to be met.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Vacuum; 28; Feb. 197
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    Technology assessment and outlook (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: The development of large space structures (LSS) for the 1980s is surveyed. Consideration is given to LSS mission requirements, large space antenna technology, several steps towards LSS development (1985-1995), structures technology needs (e.g., structural design criteria, assembly concepts, and practical joint and member concepts), structural dynamics/controls technology needs, and materials technology needs (e.g., accelerated test techniques and life prediction techniques).
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Astronautics and Aeronautics; 16; Oct. 197
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    Making clouds in Spacelab (1978)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Improvements in the accuracy of weather predictions and possibilities for changing the weather might depend on a better understanding of the microphysical processes which take place within clouds. A study of these processes on the surface of the earth is difficult in connection with gravitational disturbances. An Atmospheric Cloud Physics Laboratory (ACPL), which is currently being developed, is to be carried into space in the Spacelab in the early 1980's. This facility will provide scientists, for the first time, with the opportunity to study cloud physics without the disturbing gravitational effects. In the ACPL facility, a microscopic element can be suspended without support. The processes of freezing, thawing, collision, electric charging, and temperature changes can be observed and photographed as many times and for as long as necessary.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Spaceflight; 20; Sept
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    Critical phenomena experiments in space (1978)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: The paper analyzes several types of critical phenomena in fluids, shows how they are affected by the presence of gravity, and describes how experiments conducted in an orbiting laboratory under low gravity conditions could extend the range of measurements needed to study critical phenomena. Future experiments are proposed. One would be a careful measurement of the dielectric constant in a low gravity environment. Two basic problems that can benefit especially from space experiments are the specific heat near the critical point and the shear viscosity at the gas-liquid critical point.
    Keywords: ASTRONAUTICS (GENERAL)
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    Space industrialization. Volume 3: World and domestic implications (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The status of worldwide space industralization activities is assessed as well as the benefits to be anticipated from enhanced activities. Methods for stimulating space industralization growth are discussed with emphasis on foreign and international activities, national and world impact assessments, industry/government interfaces, legal implications, institutional implications, economics and capitalization, and implementation issues and recommendations.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-150754 , SAI-79-604-HU-VOL-3
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    Bioprocessing feasibility analysis (1978)
    In:  CASI
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    Publication Date: 2019-06-27
    Description: The biology and pathophysiology of the thymus gland is discussed and a clinical procedure for thymic hormone assay is described. The separation of null lymphocytes from mice spleens and the functional characteristics of the cells after storage and transportation were investigated to develop a clinical procedure for thymic hormone assay, and to determine whether a ground-based approach will provide the desired end-product in sufficient quantities, or whether the microgravity of space should be exploited for more economical preparation of the hormone.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-151621 , FR-1235-101
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    Spacelab Level 4 Programmatic Implementation Assessment Study. Volume 2: Ground Processing requirements (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Alternate ground processing options are summarized, including installation and test requirements for payloads, space processing, combined astronomy, and life sciences. The level 4 integration resource requirements are also reviewed for: personnel, temporary relocation, transportation, ground support equipment, and Spacelab flight hardware.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-145348-VOL-2 , SD-78-SR-0009-2
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    Space industrialization. Volume 1: An overview (1978)
    In:  CASI
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    Publication Date: 2019-06-27
    Description: Benefits accruing to the United States from the investment of public and private resources in space industralization are projected. The future was examined to characterize resource pressures, requirements and supply (population, energy, materials, food). The backdrop of probable events, attitudes, and trends against which space industralization will evolve were postulated. The opportunities for space industry that would benefit earth were compiled and screened against terrestrial alternatives. A cursory market survey was conducted for the selected services and products provided by these initiatives.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-150752 , SAI-79-602-HU-VOL-1
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    Preliminary definition and evaluation of advanced space concepts. Volume 1: Executive summary (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A study was made to develop the characteristics, cost, and performance of a few of the more attractive application concepts, and to compare them against leading terrestrial alternatives, in order to determine their potential, identify those deserving further NASA attention and possible inclusion into the formal development planning sequence, and serve to initiate a dialogue with the using community and agencies.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-157300 , ATR-78(7674)-1-VOL-1
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    Space Construction Automated Fabrication Experiment Definition Study (SCAFEDS). Volume 3: Requirements (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The performance, design, and verification requirements for the space construction automated fabrication experiment (SCAFE) are defined and the source of each imposed or derived requirement is identified.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-151729 , CASD-ASP-77-018-VOL-3
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    Space Construction Automated Fabrication Experiment Definition Study (SCAFEDS). Volume 2: Study results (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: For abstract, see N78-25111.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-151730 , CASD-ASP-77-017-VOL-2
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    Space industrialization. Volume 4: Appendixes (1978)
    In:  CASI
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    Publication Date: 2019-06-27
    Description: For abstract, see N78-25107.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-150723 , SD-78-AP-0055-4
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    Space industrialization. Volume 3: Space industrialization implementation concepts (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Methods for selecting the most viable program options were examined along with techniques for hardware development. Several separate program options were defined, and future plans for space exploitation were reviewed. Hardware elements in various sectors of space are discussed in detail to provide a definition for the major functional elements and operations.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-150722 , SD-78-AP-0055-3
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    Space industrialization. Volume 2: Space industrialization background, needs, and opportunities (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: For abstract, see N78-25107.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-150721 , SD-78-AP-0055-2
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    Space industrialization. Volume 1: Executive summary (1978)
    In:  CASI
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    Publication Date: 2019-06-27
    Description: Potential goals for space industrialization were identified, and evolutionary program options for the realization of those goals were developed and assessed. Program support demands were defined, and recommendations were made in relation to program implementation.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-150720 , SD-78-AP-0055-1
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    Space Construction Automated Fabrication Experiment Definition Study (SCAFEDS). Volume 1: Executive summary (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The techniques, processes, and equipment required for automatic fabrication and assembly of structural elements in space using the space shuttle as a launch vehicle and construction base were investigated. Additional construction/systems/operational techniques, processes, and equipment which can be developed/demonstrated in the same program to provide further risk reduction benefits to future large space systems were included. Results in the areas of structure/materials, fabrication systems (beam builder, assembly jig, and avionics/controls), mission integration, and programmatics are summarized. Conclusions and recommendations are given.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-151731 , CASD-ASP-77-017-VOL-1
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    SEP ENCKE-87 and Halley rendezvous studies and improved S/C model implementation in HILTOP (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Studies were conducted to determine the performance requirements for projected state-of-the-art SEP spacecrafts boosted by the Shuttle/IUS to perform a rendezvous with the comet Halley and a rendezvous with the comet Encke during its 1977 apparition. The spacecraft model of the standard HILTOP computer program was assumed. Numerical and graphical results summarizing the studies are presented.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-135414 , BTS-TR-78-55-PT-1
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    Heliocentric interplanetary low thrust trajectory optimization program, supplement 1, part 2 (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The improvements made to the HILTOP electric propulsion trajectory computer program are described. A more realistic propulsion system model was implemented in which various thrust subsystem efficiencies and specific impulse are modeled as variable functions of power available to the propulsion system. The number of operating thrusters are staged, and the beam voltage is selected from a set of five (or less) constant voltages, based upon the application of variational calculus. The constant beam voltages may be optimized individually or collectively. The propulsion system logic is activated by a single program input key in such a manner as to preserve the HILTOP logic. An analysis describing these features, a complete description of program input quantities, and sample cases of computer output illustrating the program capabilities are presented.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-135414-APP , BTS-TR-78-54-SUPPL-1-PT-2
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    Descriptions of experiments selected for the Space Transportation System (STS) materials processing in space program (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Summaries are presented for the first group of materials processing experiments planned for a shuttle mission. Outlined are the objectives, the approach, the rationale for the use of space, and the anticipated results for each experiment.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-TM-78175
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    Payload operations control center network (POCCNET) systems definition phase study report (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The results of the studies performed during the systems definition phase of POCCNET are presented. The concept of POCCNET as a system of standard POCCs is described and an analysis of system requirements is also included. Alternative systems concepts were evaluated as well as various methods for development of reliable reusable software. A number of POCC application areas, such as command management, on board computer support, and simulation were also studied. Other areas of investigation included the operation of POCCNET systems, the facility requirements and usage.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-TM-79567 , MOD-6SR/0178
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    Space processing applications bibliography (1978)
    In:  CASI
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    Publication Date: 2019-06-27
    Description: This special bibliography lists 724 articles, papers, and reports which discuss various aspects of the use of the space environment for materials science research or for commercial enterprise. The potentialities of space processing and the improved materials processes that are made possible by the unique aspects of the space environment are emphasized. References identified in April, 1978 are cited.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-TM-78167
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    NASA/ESA CV-990 Spacelab Simulation (ASSESS 2) (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: To test the validity of the ARC approach to Spacelab, several missions simulating aspects of Spacelab operations have been conducted as part of the ASSESS Program. Each mission was designed to evaluate potential Shuttle/Spacelab concepts in increasing detail. For this mission, emphasis was placed on development and exercise of management techniques planned for Spacelab using management participants from NASA and ESA who have responsibilities for Spacelab 1 which will be launched in 1980.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-152122
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    Space Construction Automated Fabrication Experiment Definition Study (SCAFEDS), part 2 (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The techniques, processes, and equipment required for automatic fabrication and assembly of structural elements in using Shuttle as a launch vehicle, and construction were defined. Additional construction systems operational techniques, processes, and equipment which can be developed and demonstrated in the same program to provide further risk reduction benefits to future large space systems were identified and examined.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-151705 , CASD-ASP-77-016-PT-2
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    Candidate substances for space bioprocessing methodology and data specification for benefit evaluation (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Analytical and quantitative economic techniques are applied to the evaluation of the economic benefits of a wide range of substances for space bioprocessing. On the basis of expected clinical applications, as well as the size of the patient that could be affected by the clinical applications, eight substances are recommended for further benefit evaluation. Results show that a transitional probability methodology can be used to model at least one clinical application for each of these substances. In each recommended case, the disease and its therapy are sufficiently well understood and documented, and the statistical data is available to operate the model and produce estimates of the impact of new therapy systems on the cost of treatment, morbidity, and mortality. Utilizing the morbidity and mortality information produced by the model, a standard economic technique called the Value of Human Capital is used to estimate the social welfare benefits that could be attributable to the new therapy systems.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-156290 , ECON-77-265-1
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    Conceptual design for spacelab pool boiling experiment (1978)
    In:  CASI
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    Publication Date: 2019-06-27
    Description: A pool boiling heat transfer experiment to be incorporated with a larger two-phase flow experiment on Spacelab was designed to confirm (or alter) the results of earth-normal gravity experiments which indicate that the hydrodynamic peak and minimum pool boiling heat fluxes vanish at very low gravity. Twelve small sealed test cells containing water, methanol or Freon 113 and cylindrical heaters of various sizes are to be built. Each cell will be subjected to one or more 45 sec tests in which the surface heat flux on the heaters is increased linearly until the surface temperature reaches a limiting value of 500 C. The entire boiling process will be photographed in slow-motion. Boiling curves will be constructed from thermocouple and electric input data, for comparison with the motion picture records. The conduct of the experiment will require no more than a few hours of operator time.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-135378 , UKY-TR106-78-ME15
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    Low energy stage study. Volume 5: Program study cost elements and appendices (1978)
    In:  CASI
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    Publication Date: 2019-06-27
    Description: The methodology and rationale used in the development of costs for engineering, manufacturing, testing and operating a low thrust system for placing automated shuttle payloads into earth orbits are described. Cost related information for the recommended propulsion approach is included.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-150897 , REPT-2-55910/8R-3483-VOL-5
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    Low energy stage study. Volume 2: Requirements and candidate propulsion modes (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A payload mission model covering 129 launches, was examined and compared against the space transportation system shuttle standard orbit inclinations and a shuttle launch site implementation schedule. Based on this examination and comparison, a set of six reference missions were defined in terms of spacecraft weight and velocity requirements to deliver the payload from a 296 km circular Shuttle standard orbit to the spacecraft's planned orbit. Payload characteristics and requirements representative of the model payloads included in the regime bounded by each of the six reference missions were determined. A set of launch cost envelopes were developed and defined based on the characteristics of existing/planned Shuttle upper stages and expendable launch systems in terms of launch cost and velocity delivered. These six reference missions were used to define the requirements for the candidate propulsion modes which were developed and screened to determine the propulsion approaches for conceptual design.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-150894 , REPT-2-55910/8R-3483-VOL-2
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    Nonterrestrial material processing and manufacturing of large space systems (1978)
    In:  CASI
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    Publication Date: 2019-06-27
    Description: An attempt is made to provide pertinent and readily usable information on the extraterrestrial processing of materials and manufacturing of components and elements of these planned large space systems from preprocessed lunar materials which are made available at a processing and manufacturing site in space. Required facilities, equipment, machinery, energy and manpower are defined.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-TM-78207
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    Review of industry interest in space processing (1978)
    In:  CASI
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    Publication Date: 2019-06-27
    Description: The interest on the part of selected U.S. corporation in using the research facilities and capabilities for materials processing in space utilizing the Space Shuttle was assessed. The effectiveness of the interview techniques as a method for gaining insight into the complex array of issues related to materials processing in space was evaluated. The survey, conducted was intended as a random sample of individuals, representing industry, who were currently involved in materials processing in space.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-158026 , BCL-OA-TFR-78-2
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    Survey of university programs in remote sensing funded under grants from the NASA University-Space Applications program (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: NASA's Office of Space and Terrestrial Applications (OSTA) is currently assessing approaches to transferring NASA technology to both the public and private sectors. As part of this assessment, NASA is evaluating the effectiveness of an ongoing program in remote sensing technology transfer conducted by 20 university contractors/grantees, each supported totally or partially by NASA funds. The University-Space Applications program has as its objective the demonstration of practical benefits from the use of remote sensing technology to a broad spectrum of new users, principally in state and local governments. To evaluate the University-Space Applications program, NASA has a near-term requirement for data on each university effort including total funding, funding sources, length of program, program description, and effectiveness measures.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-158024 , BCL-OA-TFR-78-3
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    Report on active and planned spacecraft and experiments (1978)
    In:  CASI
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    Publication Date: 2019-06-27
    Description: Information is presented, concerning active and planned spacecraft and experiments known to the National Space Science Data Center. The information included a wide range of disciplines: astronomy, earth sciences, meteorology, planetary sciences, aeronomy, particles and fields, solar physics, life sciences, and material sciences. These spacecraft projects represented the efforts and funding of individual countries as well as cooperative arrangements among different countries.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-TM-79760 , NSSDC/WDC-A-R&S-78-04
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    Earth-to-orbit reusable launch vehicles: A comparative assessment (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A representative set of space systems, functions, and missions for NASA and DoD from which launch vehicle requirements and characteristics was established as well as a set of air-breathing launch vehicles based on graduated technology capabilities corresponding to increasingly higher staging Mach numbers. The utility of the air-breathing launch vehicle candidates based on lift-off weight, performance, technology needs, and risk was assessed and costs were compared to alternative concepts. The results indicate that a fully reusable launch vehicle, whether two stage or one stage, could potentially reduce the cost per flight 60-80% compared to that for a partially reusable vehicle but would require advances in thermal protection system technology. A two-stage-to-orbit, parallel-lift vehicle with an air-breathing booster would cost approximately the same as a single-stage-to-orbit vehicle, but the former would have greater flexibility and a significantly reduced developmental risk. A twin-booster, subsonic-staged, parallel-lift vehicle represents the lowest system cost and developmental risk. However, if a large supersonic turbojet engine in the 350,000-N thrust class were available, supersonic staging would be preferred, and the investment in development would be returned in reduced program cost.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-157444 , WGRC-78-4873 , REPT-709-02-CR
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    Optimum reentry trajectories of a lifting vehicle (1978)
    In:  CASI
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    Publication Date: 2019-06-27
    Description: The optimum maneuver of a space shuttle vehicle reentering a spherical, stationary, and locally exponential atmosphere was investigated. The use of Chapman's modified variables and a rescaled lift-drag polar leads to the formulation of a set of dimensionless equations of motion for flight analysis. The resulting equations are exact in the sense that they are also valid for flight in the vacuum. For planar flight several typical optimum maneuvers are investigated at different altitude ranges, low, moderate and very high. For three-dimensional flight, the procedure to solve the optimum trajectory for maximum cross range is discussed. Finally, using the equilibrium glide condition the maximum cross ranges for entry from circular speed, for several values of E*, and the footprint for E* = 1.5 are computed in this reduced problem.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-158486
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    Uniform distribution of BeO particles in Be casting produced in rocket free fall (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: An experiment at zero-g aboard a NASA sounding rocket was conducted to evaluate the distribution of BeO particles in a Be casting. A distinction is drawn between the downward settling of particles in a quiescent melt, and the velocity gradient collisions of particles in a melt agitated by electromagnetic stirring. A similar experiment was conducted on earth using the same melting and solidification of a 0.922 cm spheroid of HIP-50 as was carried out in space; the only difference arising from the effect of gravity. Under zero-g conditions, the time needed for agglomeration was lengthened considerably, but the result was a casting of more uniform particle distribution.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: Nature; 274; July 20
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  • 78
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    Space fabrication demonstration system (1978)
    In:  CASI
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    Publication Date: 2019-07-13
    Description: The lower right aluminum beam cap roll forming mill was delivered and installed in the beam builder. The beam was brought to full operational status and beams of one to six bay lengths were produced to demonstrate full system capability. Although the cap flange waviness problem persists, work is progressing within cost and schedule.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-161705 , NSS-SFDS-LR069 , QPR-6
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  • 79
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    Space Fabrication Demonstration System (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Progress in the mechanical/structural assembly of the beam builder is reported. The following structures were investigated: cross brace magazine/dispenser subsystem; and rolling mill supply reel, guide, and drive. The fabrication facility design and a detail design of all major subsystem components are discussed. The number of spot welds per structural joint were reduced which enables the doubling of length of truss which can be produced within known electrode life limits.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-161694 , NSS-SFDS-LR028 , QPR-4
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  • 80
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    Space Fabrication Demonstration System (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The completion of assembly of the beam builder and its first automatic production of truss is discussed. A four bay, hand assembled, roll formed members truss was built and tested to ultimate load. Detail design of the fabrication facility (beam builder) was completed and designs for subsystem debugging are discussed. Many one bay truss specimens were produced to demonstrate subsystem operation and to detect problem areas.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-161695 , NSS-SFDS-LR040 , QPR-5
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  • 81
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    Study of iron-borate materials systems processed in space (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: It was calculated that an FeBO3B2O3 glass-ceramic containing only 1 mole% FeBO3 would be equivalent for magnetooptic application to a YIG crystal of equal thickness. An Fe2O3B2O3 composition containing 2 mole% FeBO3 equivalent (98B) could be converted largely to a dense green, though opaque, FeBO3 glass-ceramic through suitable heat treatments. However, phase separation (and segregation) and Fe+3 reduction could not be entirely avoided with the various procedures that were employed. From light scattering calculations, it was estimated that about 100 A to allow 90% light transmission through a 1 cm thick sample. However, the actual FeBO3 crystallite sizes obtained in 98B were of the order of 1 micron or greater.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-150888
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  • 82
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    Solar electric propulsion and interorbital transportation (1978)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: In-house MSFC and contracted systems studies have evaluated the requirements associated with candidate SEP missions and the results point to a standard system approach for both program flexibility and economy. The prospects for economical space transportation in the 1980s have already provided a stimulus for Space Industrialization (SI) planning. Two SI initiatives that are used as examples for interorbital transportation requirements are discussed - Public Service Platforms and Satellite Power System. The interorbital requirements for SI range from support of manned geosynchronous missions to transfers of bulk cargo and large-delicate space structures from low earth orbit to geosynchronous orbit.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AAS 77-221 , Annual Meeting; Oct 18, 1977 - Oct 20, 1977; San Francisco, CA
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  • 83
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    Economics of ion propulsion for large space systems (1978)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: This study of advanced electrostatic ion thrusters for space propulsion was initiated to determine the suitability of the baseline 30-cm thruster for future missions and to identify other thruster concepts that would better satisfy mission requirements. The general scope of the study was to review mission requirements, select thruster designs to meet these requirements, assess the associated thruster technology requirements, and recommend short- and long-term technology directions that would support future thruster needs. Preliminary design concepts for several advanced thrusters were developed to assess the potential practical difficulties of a new design. This study produced useful general methodologies for assessing both planetary and earth orbit missions. For planetary missions, the assessment is in terms of payload performance as a function of propulsion system technology level. For earth orbit missions, the assessment is made on the basis of cost (cost sensitivity to propulsion system technology level).
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AIAA PAPER 78-698 , International Electric Propulsion Conference; Apr 25, 1978 - Apr 27, 1978; San Diego, CA; US
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  • 84
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    In orbit manufacture of solar reflector satellites (1978)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: The implementation of an idea reported by Oberth (1929) is discussed. This idea is concerned with the reflection of sunlight to the ground by means of orbiting metal mirrors. The approach used for implementing Oberth's idea makes use of aluminized Mylar as a reflecting material which is supported with the aid of a structure which includes six booms and a peripheral mirror cable. Four low resistance one turn coils are formed by the structure. Magnetic forces for attitude maneuvers are obtained by energizing the coils. A bipropellant propulsion system is to be used to raise the initial 330 km circular parking orbit to a 330 by 1000 km elliptic orbit. Two thrusters are employed. They are oriented parallel to each other and the mirror surface. The mirror satellite can be completely folded so as to maximize the launch capability of the Shuttle.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AAS 77-241 , Annual Meeting; Oct 18, 1977 - Oct 20, 1977; San Francisco, CA
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  • 85
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    Materials processing in space - A strategy for commercialization (1978)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: Major aerospace companies are talking about space factories manufacturing billions of dollars worth of high technology materials per year. On the other hand, a recent National Academy of Sciences study team saw little prospect for space manufacturing because, in their opinion, most of the disturbing effects of gravity in the processes they considered could be overcome on the ground for much less expenditure. This paper presents a current assessment of the problems and promises of the Materials Processing in Space Program and outlines a strategy for developing the first products of commercial value. These early products are expected to serve as paradigms of what can be accomplished by manufacturing in space and should stimulate industry to develop space manufacturing to whatever degree is economically justifiable.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AAS 77-238 , Annual Meeting; Oct 18, 1977 - Oct 20, 1977; San Francisco, CA
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  • 86
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    Structural and assembly concepts for large erectable space systems (1978)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: This paper presents a summary of studies performed by the Space Division of Rockwell under contract to the Langley Research Center of the NASA. The studies specifically addressed requirements and concepts for erectable structures ranging in size from 100 to 300 meters using the Shuttle Orbiter as the operation/assembly base. This paper discusses various types of structural configurations and building block elements and the criteria which influence their designs. A brief review is given concerning the subject of flight control. An assembly concept is presented - showing how the Orbiter may be equipped and operated to build large area structures. Estimates are also given for cargo bay stowage and mission timelines.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AAS 77-205 , Annual Meeting; Oct 18, 1977 - Oct 20, 1977; San Francisco, CA
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  • 87
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    Solar power satellite construction concepts (1978)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: In-space construction of a photovoltaic solar power satellite that is 5 1/2 by 25 km in size and weighs 81,000 tons is discussed. One of the construction approaches being considered requires 1/8-size power collection satellite modules to be constructed in low earth orbit (LEO) and transported to geosynchronous orbit (GEO) using self-powered electric thrusters. At GEO, these 1/8-size modules are connected and the antenna is constructed and attached. This construction approach will require about 300 people at LEO and 380 people at GEO working 10 hour shifts for 90 day staytimes. This paper describes the construction operations and construction equipment. Also discussed are some of the human factors considerations.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AAS 77-203 , Annual Meeting; Oct 18, 1977 - Oct 20, 1977; San Francisco, CA
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  • 88
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    Automated space fabrication of structural elements (1978)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: A description is presented of an automated space fabrication technique for basic structural elements, taking into account as representative the design loads and requirements of the solar power satellite structure. Roll forming for continuous cap and brace members is applicable for all proposed metallic materials. Spot-welding, electron beam welding, ultrasonic welding, laser welding, cold welding, and various mechanical fastening techniques are applicable for the automated fabrication process. Termination of the formed cap and brace members can be accomplished by sawing, shearing, punching, and laser cutting. The most cost effective materials were found to be the aluminum alloys. Selected for further study were AL20224T3 and AL2219-T62. In the area of fiber composites, thermoplastic matrix materials with graphite fibers were selected for future studies.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AAS 77-201 , Annual Meeting; Oct 18, 1977 - Oct 20, 1977; San Francisco, CA
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  • 89
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    A near term space demonstration program for large structures (1978)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: For applications involving an employment of ultralarge structures in space, it would be necessary to have some form of space fabrication and assembly in connection with launch vehicle payload and volume limitations. The findings of a recently completed NASA sponsored study related to an orbital construction demonstration are reported. It is shown how a relatively small construction facility which is assembled in three shuttle flights can substantially advance space construction know-how and provide the nation with a permanent shuttle tended facility that can further advance large structures technologies and provide a construction capability for deployment of large structural systems envisioned for the late 1980s. The large structures applications identified are related to communications, navigation, earth observation, energy systems, radio astronomy, illumination, space colonization, and space construction.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AAS 77-202 , Annual Meeting; Oct 18, 1977 - Oct 20, 1977; San Francisco, CA
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  • 90
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    Solar electric propulsion for the Halley's Comet rendezvous mission - Foundation for future missions (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Long range and long duration space missions require an inexpensive and powerful means of propulsion. Solar Electric Propulsion (SEP) is considered in terms of cost effectiveness and its present state of the art. An ion propulsion system is described, which will employ solar collectors (preferably bi-flat) to generate an electric current to operate an ion thruster. The expulsion of mercury, and later, argon, ions will provide the impulse to move the spacecraft. SEP in the range of 18-60 kW, and spacecraft velocities of up to 30 km/s are discussed with reference to future exploratory missions, including: asteroid and comet rendezvous, Mars sample return, planetary orbiters, and out-of-the-ecliptic space flight. SEP applicability to earth-orbital missions is also discussed, with attention to its effectiveness in moving large objects, e.g., satellite power stations, from LEO to GEO.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AIAA PAPER 78-83 , Aerospace Sciences Meeting; Jan 16, 1978 - Jan 18, 1978; Huntsville, AL
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  • 91
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    Liquid spreading ASTP Science Demonstration (1978)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: Wetting and spreading phenomena are significant in a wide variety of processes. This report discusses the results of an ASTP Science Demonstration, 'Liquid Spreading', and compares these results to theoretical predictions. On earth the initial spreading of large liquid drops on solid surfaces is always dominated by gravity; in this demonstration the effect of gravity is greatly reduced so that surface energy forces are the controlling factor.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AIAA PAPER 78-283 , Aerospace Sciences Meeting; Jan 16, 1978 - Jan 18, 1978; Huntsville, AL
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  • 92
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    The disposal of nuclear waste in space (1978)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: The important problem of disposal of nuclear waste in space is addressed. A prior study proposed carrying only actinide wastes to space, but the present study assumes that all actinides and all fission products are to be carried to space. It is shown that nuclear waste in the calcine (oxide) form can be packaged in a container designed to provide thermal control, radiation shielding, mechanical containment, and an abort reentry thermal protection system. This package can be transported to orbit via the Space Shuttle. A second Space Shuttle delivers an oxygen-hydrogen orbit transfer vehicle to a rendezvous compatible orbit and the mated OTV and waste package are sent to the preferred destination. Preferred locations are either a lunar crater or a solar orbit. Shuttle traffic densities (which vary in time) are given and the safety of space disposal of wastes discussed.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AIAA PAPER 78-280 , Aerospace Sciences Meeting; Jan 16, 1978 - Jan 18, 1978; Huntsville, AL
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  • 93
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    Historical development of world wide guided missiles (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: This paper attempts to put in perspective the development of missiles from early history to present time. The influence of World War II in accelerating the development of guided missiles, particularly through German scientists, is discussed. The dispersion of German scientists to other countries and the coupling of their work with native talent to develop guided missiles is traced. Particular emphasis is placed on the evolution of the missile in the U.S. and the U.S.S.R. Since the Soviets possess what is probably the world's most complete array of dedicated missile system types, their known inventory is reviewed in some detail.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AIAA PAPER 78-210 , Aerospace Sciences Meeting; Jan 16, 1978 - Jan 18, 1978; Huntsville, AL
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  • 94
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    Halley comet rendezvous with a SEPS vehicle (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: An analysis of the performance of a Solar Electric Propulsion System (SEPS) vehicle rendezvousing with Halley's comet just prior to its Frebruary 1986 perihelion is described. A calculus of variations mathematical formulation is used to maximize Halley arrival mass while giving effect to the influence of solar array size, launch date, arrival date, and insertion hyperbolic excess velocity. Numerical sensitivity relief, thrust system modeling, trajectory characteristics and ion engine operating conditions are discussed and illustrated. Results indicate a rendezvous is feasible with a minimal advance in solar cell and ion engine technology.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: AIAA PAPER 78-50 , Aerospace Sciences Meeting; Jan 16, 1978 - Jan 18, 1978; Huntsville, AL
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  • 95
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    Experiment definition and integration study for the accommodation of magnetic spectrometer payload on Spacelab/shuttle missions (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A super-cooled magnetic spectrometer for a cosmic-ray experiment is considered for application in the high energy astronomical observatory which may be used on a space shuttle spacelab mission. New cryostat parameters are reported which are appropriate to shuttle mission weight and mission duration constraints. Since a super-conducting magnetic spectrometer has a magnetic fringe field, methods for shielding sensitive electronic and mechanical components on nearby experiments are described.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-156806 , SSL-SER-19-ISSUE-45
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  • 96
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    The Deep Space Network (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The Deep Space Network progress in flight project support, tracking and data acquisition research and technology, network engineering, hardware and software implementation, and operation is reported.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-157310 , JPL-PR-42-45
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  • 97
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    Manufacturing process applications team (MATeam) (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Forty additional statements were added to the list of 150 problem/opportunity statements identifying possibilities for transfer of NASA technology to various manufacturing industries. Selected statements that are considered to have a high potential for transfer in the 1978 program year are presented in the form of goals and milestones. The transfer of a flux used in the stud welding of aluminum is reported. Candidate RTOP programs are identified.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-150725 , QSR-1
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  • 98
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    The Deep Space Network (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Progress in flight project support, tracking and data acquisition (TDA) research and technology, network engineering, hardware and software implementation, and operations are reported.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-157110 , JPL-PR-42-44
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  • 99
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    The deep space network (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Deep Space Network progress in flight support, tracking and data acquisition research and technology, network engineering, hardware and software implementation, and operations are reported.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-157161 , JPL-PR-42-43
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  • 100
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    Growth of single crystals by vapor transport in zero-gravity environment, ground-based experiments (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Mass and heat transfer phenomena associated with the growth of single crystals by chemical vapor transport reactions were investigated. In this technique, a gaseous transport agent reacts with the solid source material to form exclusively gaseous products. The gas phase species migrate from the source to the condensation zone of the closed reaction ampoule where the reverse reaction occurs with formation of single crystals. The necessary concentration gradient is achieved by means of a temperature gradient.
    Keywords: ASTRONAUTICS (GENERAL)
    Type: NASA-CR-150680
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