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  • ENERGY PRODUCTION AND CONVERSION  (6)
  • Waves  (2)
  • *Maternal-Fetal Exchange  (1)
  • 1
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    Effects of local geologic structure on Yucca Flats, Nevada Test Site, Explosion Waveforms: Two-dimensional linear finite-difference simulations (1987)
    In:  Bull. Seism. Soc. Am., New York, August, vol. 77, no. 12, pp. 1211-1222, pp. B05S05, (ISSN: 1340-4202)
    Details
    Publication Date: 1987
    Keywords: Seismology ; Nuclear explosion ; Anisotropy ; Waves ; Finite difference method ; SEModelling ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Finite-difference modeling of seismological problems in magnitude estimation using body waves, surface waves and seismic source imaging (1987)
    Air Force Geophysics Laboratory
    In:  Technical Report, Mexico, Air Force Geophysics Laboratory, vol. C 560, 183 pp., no. AFGL-TR-87-0106, pp. 1015-1021, (ISBN 3-933346-037)
    Details
    Publication Date: 1987
    Keywords: Nuclear explosion ; Finite difference method ; Seismology ; Magnitude ; Waves ; Source ; Body waves ; Surface waves
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Sensitivity to carcinogenesis in nude mice: skin tumors caused by transplacental exposure to ethylnitrosourea (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-11-12
    Description: Female athymic nude mice and their phenotypically normal littermates were exposed transplacentally to ethylnitrosourea. Skin tumors (papillomas and sebaceous adenomas) developed on the nude mice with an almost tenfold greater incidence than on their haired littermates. Skin tumors were also induced on nude mice but not haired controls by direct intraperitoneal treatment with ethylnitrosourea. These results indicate that nude mice have higher than normal susceptibility to carcinogenesis under some circumstances.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, L M -- Last-Barney, K -- Budinger, J M -- CA 08748/CA/NCI NIH HHS/ -- CA 22498/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1982 Nov 12;218(4573):682-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7134965" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoma/chemically induced ; Animals ; *Ethylnitrosourea ; Female ; *Maternal-Fetal Exchange ; Mice ; Mice, Nude/*physiology ; Neoplasms, Experimental/chemically induced ; *Nitrosourea Compounds ; Pregnancy ; Sebaceous Gland Neoplasms/chemically induced ; Skin Neoplasms/*chemically induced
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    PAPER CURRENT
  • 4
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    Harnessing surface plasmons for solar energy conversion (1983)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: NASA research on the feasibility of solar-energy conversion using surface plasmons is reviewed, with a focus on inelastic-tunnel-diode techniques for power extraction. The need for more efficient solar converters for planned space missions is indicated, and it is shown that a device with 50-percent efficiency could cost up to 40 times as much per sq cm as current Si cells and still be competitive. The parallel-processing approach using broadband carriers and tunable diodes is explained, and the physics of surface plasmons on metal surfaces is outlined. Technical problems being addressed include phase-matching sunlight to surface plasmons, minimizing ohmic losses and reradiation in energy transport, coupling into the tunnels by mode conversion, and gaining an understanding of the tunnel-diode energy-conversion process. Diagrams illustrating the design concepts are provided.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Parallel-processing with surface plasmons, a new strategy for converting the broad solar spectrum (1982)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: A new strategy for efficient solar-energy conversion is based on parallel processing with surface plasmons: guided electromagnetic waves supported on thin films of common metals like aluminum or silver. The approach is unique in identifying a broadband carrier with suitable range for energy transport and an inelastic tunneling process which can be used to extract more energy from the more energetic carriers without requiring different materials for each frequency band. The aim is to overcome the fundamental 56-percent loss associated with mismatch between the broad solar spectrum and the monoenergetic conduction electrons used to transport energy in conventional silicon solar cells. This paper presents a qualitative discussion of the unknowns and barrier problems, including ideas for coupling surface plasmons into the tunnels, a step which has been the weak link in the efficiency chain.
    Keywords: ENERGY PRODUCTION AND CONVERSION
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    NASA TECHNICAL REPORTS
  • 6
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    Plasmon device design: Conversion from surface to junction plasmons with grating-couplers (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-01-25
    Description: Scaling calculations and numerical studies are used to show that grating couplers provide effective energy transfer between surface plasmons and slower modes localized in the tunnel diodes. Within first order perturbation theory in grating amplitude, 90% efficiency energy transfer occurs within micrometers for realistic structures and materials parameters. Scaling laws are derived. Seventy to 90% of the electromagnetic field energy is concentrated in the oxide layer of an MOM diode after the energy is distributed by longer range modes that have less than 0.1% overlap with the tunneling region. The mode conversion allows the requirements separation for energy transport and power production by inelastic tunneling.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Space Photovoltaic Res. and Technol. 1983; p 155
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Solar energy conversion using surface plasmons for broadband energy transport (1982)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A new strategy for efficient solar energy conversion based on parallel processing with surface plasmons is introduced. The approach is unique in identifying: (1) a broadband carrier with suitable range for energy transport, and (2) a technique to extract more energy from the more energetic photons, without sequential losses or unique materials for each frequency band. The aim is to overcome the fundamental losses associated with the broad solar spectrum and to achieve a higher level of spectrum splitting than has been possible in semiconductor systems.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Space Photovoltaic Res. and Technol. 1982: High Efficiency, Radiation Damage, and Blanket Technol.; p 79-87
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Solar energy converter using surface plasma waves (1984)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Sunlight is dispersed over a diffraction grating formed on the surface of a conducting film on a substrate. The angular dispersion controls the effective grating period so that a matching spectrum of surface plasmons is excited for parallel processing on the conducting film. The resulting surface plasmons carry energy to an array of inelastic tunnel diodes. This solar energy converter does not require different materials for each frequency band, and sunlight is directly converted to electricity in an efficient manner by extracting more energy from the more energetic photons.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NAS 1.71:LEW-13827-1
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    A new strategy for efficient solar energy conversion - Parallel-processing with surface plasmons (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: (Previously announced in STAR as N82-29354)
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: IECEC ''82; Seventeenth Intersociety Energy Conversion Engineering Conference; Aug 08, 1982 - Aug 12, 1982; Los Angeles, CA
    Format: text
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    NASA TECHNICAL REPORTS
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