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  • BIOTECHNOLOGY  (1)
  • SPACE SCIENCES  (1)
  • 1
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    A gravity exercise system (1973)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: An effective method for muscle conditioning during weightlessness flight is derived from isometric exercise. The basic principle of gravity exercise is to periodically displace the human body upon reactionless rollers so that spacial equilibrium can only be maintained by the proper tension and relaxation of the body's muscles. A rotating platform mounted upon two degrees of freedom rollers provides such a condition of gravitational reaction stress throughout each of its 360 deg rotation.
    Keywords: BIOTECHNOLOGY
    Type: NASA. Langley Res. Center The 8th Aerospace Mech. Symp.; p 311-316
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Phenocryst fabric in lunar basalt sample 12052 from the Ocean of Storms. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Pyroxene phenocrysts in Apollo 12 sample 12052, a porphyritic basalt, have a weak, planar preferred orientation and a lineation as determined by crystal-elongation measurements and universal-stage measurements in orthogonal thin sections. The structures are probably the result of laminar flow. Numerous vugs and the flow foliation in sample 12052 suggest crystallization as a surface flow or a near-surface sill. Flowage appears to have ceased by the time of crystallization of the variolitic groundmass of the sample. The fabric data suggest a two-stage crystallization of sample 12052.
    Keywords: SPACE SCIENCES
    Type: Geological Society of America Bulletin; 83; Sept
    Format: text
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    NASA TECHNICAL REPORTS
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