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  • Other Sources  (874)
  • BIOSCIENCES  (292)
  • BIOTECHNOLOGY  (275)
  • PROPULSION SYSTEMS  (266)
  • ASTROPHYSICS
  • Physics
  • 1970-1974  (874)
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Source
Keywords
Years
Year
  • 1
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    Shuttle- Life support, protective systems, and crew system interface technology (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Space shuttle life support, protective and crew system interfaces, discussing food and waste management and accident procedures
    Keywords: BIOTECHNOLOGY
    Type: ; VUE SCIENTIFIQUE ET
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Circadian variations in presumably healthy men under conditions of peace-time army reserve unit training. (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Keywords: BIOSCIENCES
    Type: Space Life Sciences; 4; Apr. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Optimization of life support systems and their systems reliability (1971)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The identification, analysis, and optimization of life support systems and subsystems have been investigated. For each system or subsystem that has been considered, the procedure involves the establishment of a set of system equations (or mathematical model) based on theory and experimental evidences; the analysis and simulation of the model; the optimization of the operation, control, and reliability; analysis of sensitivity of the system based on the model; and, if possible, experimental verification of the theoretical and computational results. Research activities include: (1) modeling of air flow in a confined space; (2) review of several different gas-liquid contactors utilizing centrifugal force: (3) review of carbon dioxide reduction contactors in space vehicles and other enclosed structures: (4) application of modern optimal control theory to environmental control of confined spaces; (5) optimal control of class of nonlinear diffusional distributed parameter systems: (6) optimization of system reliability of life support systems and sub-systems: (7) modeling, simulation and optimal control of the human thermal system: and (8) analysis and optimization of the water-vapor eletrolysis cell.
    Keywords: BIOTECHNOLOGY
    Type: NASA-CR-136276
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Body water compartments during bed rest: Evaluation of analytical methods (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Nine healthy young men were studied to determine the reproducibility and interchangeability of the use of radio-iodinated human serum albumin and Evans Blue dye for estimating plasma volume, sodium bromide for extracellular fluid volume, and deuterium oxide for total body water volume. All subjects were tested in a semibasal condition and allowed to rest for at least 30 min. after arriving at the laboratory. The results indicate that there was uniform distribution of I131 and Evans Blue dye 10 min. after injection and of NaBr and D2O 3 hours after oral ingestion; the buildup of residual tracer did not interfere appreciably with the measurement of either or Evans Blue spaces when they are administered at equal intervals, and the buildup of background tracer after ingestion of NaBr and D2O once per week for three consecutive weeks did not affect the accuracy of the measurement. It was found that I131 and Evans Blue may be used interchangeably for estimating plasma volume; for estimating bromide and D2O spaces, one 3-hour equilibrium blood sample gives results similar to the extrapolation of multiple samples.
    Keywords: BIOTECHNOLOGY
    Type: NASA-TR-R-406 , A-4656
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Optimal low thrust geocentric transfer (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A computer code which will rapidly calculate time-optimal low thrust transfers is being developed as a mission analysis tool. The final program will apply to NEP or SEP missions and will include a variety of environmental effects. The current program assumes constant acceleration. The oblateness effect and shadowing may be included. Detailed state and costate equations are given for the thrust effect, oblateness effect, and shadowing. A simple but adequate model yields analytical formulas for power degradation due to the Van Allen radiation belts for SEP missions. The program avoids the classical singularities by the use of equinoctial orbital elements. Kryloff-Bogoliuboff averaging is used to facilitate rapid calculation. Results for selected cases using the current program are given.
    Keywords: PROPULSION SYSTEMS
    Type: AIAA PAPER 73-1074 , Electric Propulsion Conference; Oct 31, 1973 - Nov 02, 1973; Lake Tahoe, NV
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Thrust vector control study for large /260 inch/ rocket motor applications (1970)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Design concepts of thrust vector control for large rocket motor applications
    Keywords: PROPULSION SYSTEMS
    Type: NASA-CR-114223 , JANNAF INTERAGENCY PROPULSION COMM. 26TH SOLID PROPULSION MEETING; Jul 14, 1970 - Jul 16, 1970; WASHINGTON, DC; UNITED STATES
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Odor test (1971)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: To prevent the use of spacecraft material that would outgas objectionable or nauseating odors, an odor test was developed. This test provided a means whereby candidate spacecraft materials were subjected to a particular environment and the outgassed products were evaluated by an odor panel. This panel was comprised of individuals with acute olfactory senses. The test results of the odor panel provided design engineers with data regarding potential material-odor problems. The odor-test procedure, panel-member selection, and odor scoring methods are described and typical test results are presented.
    Keywords: BIOTECHNOLOGY
    Type: Conf. on Mater. for Improved Fire Safety; p 203-205
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Development of propulsion for high atmospheric pressure or dense environments (1973)
    In:  CASI
    Details
    Publication Date: 2006-02-22
    Description: The development of a propulsion system that employs a detonating propellant is described, and the need for such a system and its use in certain planetary atmospheres are demonstrated. A theoretical formulation of the relevant gas-dynamic processes was developed, and a related series of experimental tests were pursued.
    Keywords: PROPULSION SYSTEMS
    Type: JPL Quart. Tech. Rev., Vol. 3, No. 2 (NASA-CR-133863); p 45-52
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    V/STOL propulsion (1971)
    In:  CASI
    Details
    Publication Date: 2006-04-20
    Description: Propulsion technology for STOL and V/STOL commercial aircraft
    Keywords: PROPULSION SYSTEMS
    Type: AIRCRAFT PROPULSION 1971; P 135-168
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    An investigation of the cosmic radiation in the vicinity of the moon on the Luna 10, 11, and 12 artificial lunar satellites (1974)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: Research on the primary cosmic radiation and solar cosmic rays from the Luna 10, 11, and 12 artificial lunar satellites is reviewed. Data on the vertical distribution of cosmic rays above the moon's surface are presented, and the albedo for the primary radiation is determined. The fluxes of electrons with energies from 30 to 300 keV were registered in the solar cosmic rays. Rapid variations of the electron flux were observed. The angular distributions of 0.5-10 MeV protons moving together with the corpuscular streams responsible for Forbush decreases were investigated.
    Keywords: ASTROPHYSICS
    Type: Interplanet. Medium and Phys. of the Magnetosphere (NASA-TT-F-784); p 151-173
    Format: text
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    NASA TECHNICAL REPORTS
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