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  • Other Sources  (50)
  • 2020-2023  (1)
  • 2005-2009  (14)
  • 1980-1984  (27)
  • 1925-1929
  • 1
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    Observations by the International Tsunami Survey Team in Sri Lanka (2005)
    In:  Science, L'wiw, Inst. f. Theoret. Geodäsie, vol. 308, no. 5728, pp. 1595, pp. B01408, (ISSN: 1340-4202)
    Details
    Publication Date: 2005
    Keywords: Tsunami(s) ; Banda ; Aceh ; Indonesia ; Earthquake engineering, engineering seismology ; stresses ; the ; importance ; of ; education ; runup
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Time-average fluxes of heavy ions at the geostationary orbit (1980)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Measurements of average proton, helium, carbon, and oxygen fluxes at 6.6 earth radii are reported. The data represent averages obtained on ATS 6 between June 15 and Oct. 3, 1974. The energy range covered was 0.36-1.1 MeV for protons and approximately 1-4 MeV for the heavier ions. The results indicate that above about 1 MeV the heavier ion fluxes dominate over the proton flux on the energy/ion scale. Using two different spectral dependencies to fit the data, the carbon to oxygen concentration ratio for energies above 1 MeV was found to be 0.43 for the power law spectrum and 0.44 for the exponential spectrum. Thus in either case the abundance ratio is consistent with the solar origin of the particles. Similarly, the helium to oxygen concentration ratio is found to be 0.17 for the power law spectrum and 0.28 for the exponential spectrum. This is inconsistent with the solar wind ratio, which is about 10. The results quoted above are based on a very small portion of the distribution function above 1 MeV.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 85; Oct. 1
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Preserved signatures of ion flux modulations observed by ATS 6 (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: The considered investigation is concerned with a detailed analysis of the event of August 13, 1974. The considered day was a geomagnetically quiet day, and ATS 6 was stationed at 94 deg W longitude. On the basis of the conducted analysis it is found that the observed flux oscillations may be a fossil signature of flux modulations which have occurred in ions at an earlier time and at a region away from the spot of observation. In conclusion, it is pointed out that the August 13, 1974, and the January 23, 1975, events of proton flux oscillations observed by ATS 6 are of great importance. They reveal another unique capability of the drifting particles for preserving small modulation signatures imposed upon them during earlier wave-particle interactions. At the present, no conclusions are drawn as to what kind of the wave-particle interaction process was responsible for the observation.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 86; Dec. 1
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    F-16XL Geometry and Grids (2009)
    In:  CASI
    Details
    Publication Date: 2018-06-28
    Description: The objective of the Cranked-Arrow Wing Aerodynamics Project International (CAWAPI) was to allow a comprehensive validation of Computational Fluid Dynamics methods against the CAWAP flight database. A major part of this work involved the generation of high-quality computational grids. Prior to the grid generation an IGES file containing the air-tight geometry of the F-16XL aircraft was generated by a cooperation of some of the CAWAPI partners. Based on this geometry description both structured and unstructured grids have been generated. The baseline structured (multi-block) grid (and a family of derived grids) has been generated by the National Aerospace Laboratory (NLR). The baseline all-tetrahedral and hybrid unstructured grids were generated at the NASA Langley Research Center and the U.S. Air Force Academy, respectively. To provide more geometrical resolution, additional unstructured grids were generated at EADS-MAS, the UTSimCenter, and Boeing Phantom Works. All the grids generated within the framework of CAWAPI will be discussed.
    Keywords: Aerodynamics
    Type: Understanding and Modeling Vortical Flows to Improve the Technology Readiness Level for Military Aircraft; 4-1 - 4-17; RTO-TR-AVT-113
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Experimental investigation of the physical properties of medium and heavy oils, their vaporization and use in explosion engines. Part IV (1926)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This report presents a theoretical treatment of the vaporization process of medium and heavy oils. The results of this investigation, which were mostly obtained from the lighter components of the heavy fuels, require a 10- or 16-fold vaporization in comparison with gasoline. We must attain a still finer degree of atomization, in order to include the heavier components.
    Type: NACA-TM-392
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Experimental investigation of the physical properties of medium and heavy oils, their vaporization and use in explosion engines. Part I (1926)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: While little has been accomplished in obtaining an abundant supply of light oils from coal and heavy oils, progress has been made on engine design to make use of the heavier oils. Progress has been made in two different directions which are outlined in this paper: the group of engines with medium and high-pressure carburetion in the cylinder; and the group of engines with low-pressure carburetion of the heavy oils before reaching the cylinder.
    Type: NACA-TM-362
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Experimental investigation of the physical properties of medium and heavy oils, their vaporization and use in explosion engines. Part III (1926)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The test equipment for studying the vaporization of heavy and medium oils is described as well as some of the experimental properties explored such as vaporization speed and diffusion coefficient. The experiemtal arrangement is also discussed.
    Type: NACA-TM-384
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Experimental investigation of the physical properties of medium and heavy oils, their vaporization and use in explosion engines. Part II (1926)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This report is an evaluation of the experiments on the use of heavy oils in explosion engines. A method for determining the heat of vaporization of these heavy oils is presented.
    Type: NACA-TM-363
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Energetic particle sounding at the magnetopause and implications for magnetic reconnection (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Measurements of energetic particle three dimensional distributions used to infer the structure of the region of the subsolar magnetopause obtained from the Medium Energy Particle Experiment onboard the ISEE-1 and 2 satellites are reviewed. Although initial interpretations of two types of energetic particle signatures argued against the topology predicted by magnetic reconnection at the magnetopause, subsequent understanding of the meaning of these observations demonstrate that the energetic particle data are uniformly consistent with the theory.
    Keywords: GEOPHYSICS
    Type: ESA Achievements of the Intern. Magnetospheric Sutdy (IMS); p 131-135
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Energetic ion and electron observations of the geomagnetic plasma sheet boundary layer - Three-dimensional results from ISEE 1 (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: A description of energetic ion and electron behavior in the geomagnetic plasma sheet boundary layer is presented based on observations made by the medium-energy particle experiment on board ISEE 1. Three-dimensional observations of ions of energies 24-2081 keV and electrons of energies 22.5-1200 keV were obtained by the NOAA/WAPS instrument near the center of the magnetotail at a distance of approximately 15 earth radii. Large-scale motions of plasma sheet energetic particles are observed as an apparent result of a series of magnetospheric disturbances (substorms), which are characterized by substantial contractions and expansions. Ion flow velocity in a distinct boundary layer in energetic ions has been found to be in the earthward direction in each of the five ISEE 1 boundary crossings. Boundary layer motion during one of these crossings is interpreted as large-amplitude boundary waves with periodicities of a few minutes superimposed on the general plasma sheet behavior associated with the substorm process.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 86; Apr. 1
    Format: text
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    NASA TECHNICAL REPORTS
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