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  • NUCLEAR ENGINEERING  (9)
  • EARTH RESOURCES AND REMOTE SENSING  (6)
  • *Drinking Behavior/drug effects  (1)
  • Atomic, Molecular, and Optical Physics  (1)
  • BSSA  (1)
  • 11
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    Unbekannt
    Determination of reactivities using pulsed neutron techniques for highly subcritical solution reactors. (1967)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: Reactivities determined from pulsed neutron techniques for highly subcritical solution reactors
    Schlagwort(e): NUCLEAR ENGINEERING
    Materialart: WINTER MEETING; Nov 05, 1967 - Nov 09, 1967; CHICAGO, IL
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 12
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    Unbekannt
    Remote profiling of lake ice using an S-band short pulse radar aboard an all-terrain vehicle (1975)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: An airborne short-pulse radar system to measure ice thickness was designed. The system supported an effort to develop an all-weather Great Lakes Ice Information System to aid in extending the winter navigation season. Experimental studies into the accuracy and limitations of the system are described. A low power version was operated from an all-terrain vehicle on the Straits of Mackinac during March 1975. The vehicle allowed rapid surveying of large areas and eliminated the ambiguity in location between the radar system and the ground truth ice auger team. It was also possible to the effects of snow cover, surface melt water, pressure ridging, and ice type upon the accuracy of the system. Over 25 sites were explored which had ice thicknesses from 29 to 60 cm. The maximum radar overestimate was 9.8 percent, while the maximum underestimate was 6.6 percent. The average error of the 25 measurements was 0.1 percent.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: NASA-TM-X-71808 , E-8502 , Subsurface Probing Session of the International Union of Radio Science Meeting; Oct 20, 1975 - Oct 23, 1975; Boulder, CO; United States
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 13
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    Unbekannt
    Great Lakes all-weather ice information system (1975)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: A system is described which utilizes an X-band Side-Looking-Airborne-Radar (SLAR) for determining type, location, and aerial distribution of the ice cover in the Great Lakes and an airborne, S-band, short pulse radar for obtaining ice thickness. The SLAR system is currently mounted aboard a U.S. Coast Guard C-130B aircraft. Digitized SLAR data are relayed in real-time via the NOAA-GOES-1 satellite in geosynchronous orbit to the U.S. Coast Guard Ice Center in Cleveland, Ohio. SLAR images along with hand-drawn interpretative ice charts for various winter shipping areas in the Great Lakes are broadcast to facsimile recorders aboard Great Lakes vessels. The operational aspects of this ice information system are being demonstrated by NASA, U.S. Coast Guard, and NOAA/National Weather Service. Results from the 1974-75 winter season demonstrated the ability of this system to provide all-weather ice information to shippers in a timely manner.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: NASA-TM-X-71815 , Intern. Symp. on Remote Sensing of the Environment; Oct 06, 1975 - Oct 10, 1975; Ann Arbor, MI; United States
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 14
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    Unbekannt
    Pulsed-neutron-source studies with the NASA zero power reactor 2 (1970)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Pulsed neutron measurements on nuclear reactor shutdown reactivities
    Schlagwort(e): NUCLEAR ENGINEERING
    Materialart: NASA-TN-D-5956 , E-5659
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 15
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    Unbekannt
    Criticality study of NASA solution reactors with 25.4-centimeter diameter cylindrical stainless-steel tanks (1971)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Criticality study of ZPR-1 and ZPR-2 with 25.4-cm diameter cylindrical stainless steel cores
    Schlagwort(e): NUCLEAR ENGINEERING
    Materialart: NASA-TM-X-2381 , E-6421
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 16
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    Unbekannt
    Measured and calculated fast neutron spectra in a depleted uranium and lithium hydride shielded reactor (1973)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Measurements of MeV neutron were made at the surface of a lithium hydride and depleted uranium shielded reactor. Four shield configurations were considered: these were assembled progressively with cylindrical shells of 5-centimeter-thick depleted uranium, 13-centimeter-thick lithium hydride, 5-centimeter-thick depleted uranium, 13-centimeter-thick lithium hydride, 5-centimeter-thick depleted uranium, and 3-centimeter-thick depleted uranium. Measurements were made with a NE-218 scintillation spectrometer; proton pulse height distributions were differentiated to obtain neutron spectra. Calculations were made using the two-dimensional discrete ordinates code DOT and ENDF/B (version 3) cross sections. Good agreement between measured and calculated spectral shape was observed. Absolute measured and calculated fluxes were within 50 percent of one another; observed discrepancies in absolute flux may be due to cross section errors.
    Schlagwort(e): NUCLEAR ENGINEERING
    Materialart: NASA-TM-X-2906 , E-7485
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 17
    facet.materialart.
    Unbekannt
    Great Lakes all-weather ice information system (1975)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The all-weather ice information system described uses the X-band side-looking airborne radar to determine the aerial distribution, location, and type of ice cover in the Great Lakes and an airborne S-band short-pulse radar to determine the ice thickness. Results from the 1974-1975 winter season demonstrated the ability of the system to provide all-weather ice information to shippers at the required time.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: International Symposium on Remote Sensing of the Environment; Oct 06, 1975 - Oct 10, 1975; Ann Arbor, MI
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 18
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    Unbekannt
    Remote profiling of lake ice using an S-band short-pulse radar aboard an all-terrain vehicle (1975)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The airborne short-pulse radar system described was developed to measure ice thickness in an attempt to extend the winter navigation system as a means of reducing coal and ore shipping costs. Experimental studies of the accuracy and limitations of the system are discussed, and measurements made at 25 sites are compared. The radar system was found to provide accurate lake ice thickness measurements that were not affected by snow cover or adverse weather conditions. Surface melting and rain, however, preclude measurements.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: International Union of Radio Science Meeting; Oct 20, 1975 - Oct 23, 1975; Boulder, CO
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
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