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  • Other Sources  (176)
  • BIOSCIENCES  (176)
  • 1970-1974  (176)
  • 1945-1949
  • 1974  (176)
  • 1
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    Space and man (1974)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: The effects of man's entry into space on changes in economics and technology, politics and law, science, philosophy, and art are considered. A single world economy, extracting from the natural resources of the moon and other cosmic bodies raw materials and energy, will avoid terrestrial limitations and improve society by eliminating the inequalities of economic and social status. However, a spacecraft for interplanetary travel require thermonuclear engines that achieve an escape velocity of 0.1 times the speed of light in order to allow an astronaut stellar expedition corresponding to the active life of a single generation.
    Keywords: BIOSCIENCES
    Type: Inhabited Space, Pt. 2 (NASA-TT-F-820); p 128-134
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Detection of life in space (1974)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: The selection of spacecraft experiments and equipment to detect extraterrestrial life outside earth centers on observations of chemical compounds similar to amino acids and proteins, on signs of metabolism in the form of nutrient absorption, and life form impressions in fossiles or signs of civilization.
    Keywords: BIOSCIENCES
    Type: Inhabited Space, Pt. 2 (NASA-TT-F-820; p 42-52
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    NASA TECHNICAL REPORTS
  • 3
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    Space psychology (1974)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: Psychological selection of astronauts considers mental responses and adaptation to the following space flight stress factors: (1) confinement in a small space; (2) changes in three dimensional orientation; (3) effects of altered gravity and weightlessness; (4) decrease in afferent nerve pulses; (5) a sensation of novelty and danger; and (6) a sense of separation from earth.
    Keywords: BIOSCIENCES
    Type: Inhabited Space, Pt. 2 (NASA-TT-F-820); p 29-41
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    NASA TECHNICAL REPORTS
  • 4
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    Life in space (1974)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: Biotechnological aspects of manned space flight are reviewed and the basic biological problems of training and sustaining man in interplanetary flights are elaborated.
    Keywords: BIOSCIENCES
    Type: Inhabited Space, Pt. 2 (NASA-TT-F-820); p 17-28
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  • 5
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    Alterations in left ventricular volumes induced by Valsalva manoeuvre (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Five patients were studied with left ventriculography during different phases of the Valsalva manoeuvre. Small doses of contrast medium allowed adequate repetitive visualization of the left ventricle for volume calculation. During strain phase, the volume of the left ventricle decreased by nearly 50 per cent in each case, and stroke volume and cardiac output also dropped strikingly. Release of straining was attended by a sharp rebound of left ventricular volume to control levels, with a transient surge of increased cardiac output 42 per cent above that of the resting state.
    Keywords: BIOSCIENCES
    Type: British Heart Journal; 36; July 197
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  • 6
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    Apollo space crew cardiovascular evaluations (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Cardiovascular responses associated with pre- and postflight orthostatic tolerance evaluations of Apollo crewmen are presented with a brief historical survey and a discussion of their implications for future manned space flight. Heart rates were increased while systolic and pulse pressures were decreased during the immediate postflight orthostatic evaluation. A postflight elevation in resting heart rate was a less frequent finding.
    Keywords: BIOSCIENCES
    Type: Aerospace Medicine; 45; Aug. 197
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  • 7
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    Recovery of medically important microorganisms from Apollo astronauts (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Microbiological samples were obtained from the crewmembers of the Apollo 13, 14, 15, 16, and 17 spaceflights. These specimens were analyzed for the presence of medically important microorganisms with Staphylococcus aureus, Pseudomonas aeruginosa, Tricophyton mentagrophytes, Tricophyton rubrum, and Candida albicans being discussed in detail. Preflight isolation of crewmembers was found to coincide with a complete absence of inflight disease events and is recommended for future spaceflights. No autoinfection response (microbial shock) occurred after any of the reported spaceflights.
    Keywords: BIOSCIENCES
    Type: Aerospace Medicine; 45; Aug. 197
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  • 8
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    Alteration of pituitary-adrenal dynamics induced by a water deprivation regimen (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Experiments are described which were designed to assess the degree of adaptation that occurs in rats chronically exposed to the stress of a water-deprivation regimen and to determine if that adaptation represents a normalization of the hypothalamic-pituitary-adrenal axis. There were no significant differences in mean corticosterone concentrations among control nondeprived rats 1, 4, and 8 weeks after the start of the experiment. The water-deprived rats, however, had significantly elevated plasma steroids 1 and 4 weeks after the onset of deprivation as compared to controls, but not after 8 weeks. Thus, there was a significant decrease in mean plasma corticosterone levels during water deprivation from 1 week to 8 weeks.
    Keywords: BIOSCIENCES
    Type: Physiology and Behavior; 12; 1974
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  • 9
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    Effects of simulated weightlessness on responses of untrained men to +Gz acceleration (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: This study documents bedrest-induced metabolic and physiologic changes in six untrained men exposed, following a two-week period of simulated weightlessness, to possible +Gz acceleration profiles anticipated for Space Shuttle vehicle travel. All subjects demonstrated decreased +Gz tolerance following simulated weightlessness. While only one of six subjects could not tolerate the +Gz profile in the control phase of the study, three of the six could not complete the postbed-rest study. The use of an inflated standard Air Force cutaway G-suit improved +Gz tolerance in all subjects, but two of six subjects still failed to complete the profile. These findings are discussed in reference to the selection of untrained humans for Space Shuttle vehicle travel.
    Keywords: BIOSCIENCES
    Type: Journal of Applied Physiology; 36; June 197
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  • 10
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    Determination of left ventricular size and shape (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Significant advances have occurred over the past 15 years in the ability to measure ventricular dimensions. Angiocardiography still remains the most reliable method for overall determination of chamber size and shape and serves as a standard for calibration or comparison for newer methods. Improvements in the use of radiographic methods over the next few years are anticipated with more extensive use of multiplane studies associated with repeated injections of improved contrast materials that produce fewer physiological effects or with substances that adhere to the endocardial surfaces. It is also anticipated that existing methods for automatically obtaining dimensional information from X rays will be continued and improved.
    Keywords: BIOSCIENCES
    Type: Circulation Research; 34; Jan. 197
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