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  • 1980-1984  (2)
  • 1
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    Space station needs, attributes and architectural options: Architectural options and selection (1983)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The approach, study results, and recommendations for defining and selecting space station architectural options are described. Space station system architecture is defined as the arrangement of elements (manned and unmanned on-orbit facilities, shuttle vehicles, orbital transfer vehicles, etc.), the number of these elements, their location (orbital inclination and altitude, and their functional performance capability, power, volume, crew, etc.). Architectural options are evaluated based on the degree of mission capture versus cost and required funding rate. Mission capture refers to the number of missions accommodated by the particular architecture.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-CR-173694 , NAS 1.26:173694 , MDC-H0537
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    The role of predation by decapod crustaceans in seagrass ecosystems (1981)
    Institut für Meereskunde
    Details
    Publication Date: 2022-05-25
    Description: Data from a series of laboratory and field predation experiments using fish and decapod predators from seagrass beds in the Indian River, Florida, USA, indicated that the density of many of the taxonomic groups of seagrass-associated macrobenthos were related in a negative exponential manner to the total density of decapod crustaceans present. Significant regressions were observed in the laboratory and the field experiments for the Amphipoda, Gastropoda, Bivalvia, Polychaeta, Sipunculida, and Tanaidacea, whereas the lsopoda and Nemertinea showed no such relationships. These data emphasize the fact that simplification of intermediate trophic levels in trophic models is unwarranted and may result in failure to recognize important regulatory pathways for seagrass community structure.
    Type: Article , NonPeerReviewed
    Format: text
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    PAPER (OCEANREP)
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