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  • 1
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    Life sciences - On the critical path for missions of exploration (1988)
    In:  Other Sources
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    Publication Date: 2019-08-14
    Description: Life sciences are important and critical to the safety and success of manned and long-duration space missions. The life science issues covered include gravitational physiology, space radiation, medical care delivery, environmental maintenance, bioregenerative systems, crew and human factors within and outside the spacecraft. The history of the role of life sciences in the space program is traced from the Apollo era, through the Skylab era to the Space Shuttle era. The life science issues of the space station program and manned missions to the moon and Mars are covered.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: SAE PAPER 881012
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    NASA plans and opportunities (1991)
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    Publication Date: 2019-08-14
    Description: The NASA plans for the Life Science program of a series of space flight activities throughout the decade of the 1990s are discussed with particular attention given to the NASA life science goals and objectives and to the particular space missions which will carry out these objectives. These space missions and specially designed facilities for experiments in space include Space Station Freedom, Space Biology Initiative, Gravitational Biology Facility, Life Sciences Centrifuge Facility, Controlled Ecological Life Support Systems Test Facility, and Exobiology Facility.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: Experimental Gerontology (ISSN 0531-5565); 26; 2-3; p. 131-133.
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    NASA TECHNICAL REPORTS
  • 3
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    Life sciences and Mars exploration (1990)
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    Publication Date: 2019-08-27
    Description: The major life science considerations for Mars exploration missions are discussed. Radiation protection and countermeasures for zero gravity are discussed. Considerations of crew psychological health considerations and life support systems are addressed. Scientific opportunities presented by manned Mars missions are examined.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: AIAA PAPER 90-3793
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    NASA TECHNICAL REPORTS
  • 4
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    The biological clock of Neurospora in a microgravity environment (1989)
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    Publication Date: 2019-08-27
    Description: The effects of simulated microgravity (via the use of a slowly rotating clinostat), altered orientation (via alterations in the vector of a 1-g force), and hypergravity (via centrifugation) on the circadian rhythm of conidiation in Neurospora crassa were investigated. It was found that the clinostat, while capable of producing some of the microgravity effects seen in space (Sulzman, 1984), did not produce major repeatable results. Similarly, alterations of the vector of a 1-g gravity load were not adequate simulations of space flight on the conidiation rhythm. The results on the acute and chronic exposures to hypergravity demonstrated that chronic exposure of Neurospora to a 3-g force had no damping effect. On the other hand, an acute 10-min exposure to this hypergravity (the lift-off conditions) was found to cause significant damping on the circadian rhythm of conidiation. This effect was eliminated by a brief light pulse given 36 hrs after the exposure to 3 g.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: - Gravitational Biology, Espoo, Finland, July 18-29, 1988) Advances in Space Research (ISSN 0273-1177); 251-260
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    NASA TECHNICAL REPORTS
  • 5
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    Gravitational biology and the mammalian circadian timing system (1989)
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    Publication Date: 2019-08-28
    Description: Using published reports, this paper compares and contrasts results on the effects of altered gravitational fields on the regulation in mammals of several physiological and behavioral variables with the circadian regulation of the same variables. The variables considered include the temperature regulation, heart rate, activity, food intake, and calcium balance. It is shown that, in rats, the homeostatic regulation of the body temperature, heart rate, and activity becomes depressed following exposure to a 2 G hyperdynamic field, and recovers within 6 days of 1 G condition. In addition, the circadian rhythms of these variables exhibit a depression of the rhythm amplitude; a recovery of this condition requires a minimum of 7 days.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: - Gravitational Biology, Espoo, Finland, July 18-29, 1988) Advances in Space Research (ISSN 0273-1177); 283-292
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