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  • SPACE RADIATION  (563)
  • BIOTECHNOLOGY  (275)
  • 1975-1979  (137)
  • 1970-1974  (701)
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Years
Year
  • 1
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    Prediction of energetic particle disturbances (1979)
    In:  CASI
    Details
    Publication Date: 2006-01-16
    Description: The prediction of fluxes of energetic particles of solar or magnetospheric origin is addressed. Topics include the prediction of the properties of the particle populations generated by magnetospheric storms and substorms, and the prediction of long term variations in the populations of magnetospheric particles.
    Keywords: SPACE RADIATION
    Type: NASA. Marshall Space Flight Center Solar-Terrest. Predictions Proc., Vol. 2; p 415-432
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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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
  • 3
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    The possibility of using superconductive systems in the analysis of the composition of cosmic rays (1975)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The experimental results on the use of superconductive systems onboard of spacecraft are described. To ensure low temperatures in the cryostat under weightlessness, helium was used at a pressure above the critical pressure. In flight, the temperature was controlled at six points, while the pressure and intensity of the magnetic field were controlled in the solenoids. The methodical test proved it possible to mount special installations on satellites, with extensive magnetic fields based on superconductive alloys, and particularly, low weights and low power consumption magnetic analyzers.
    Keywords: SPACE RADIATION
    Type: Cosmic Rays (; p 256-260
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Cosmic ray antiproton and positron production in the interstellar medium (1975)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: We have calculated the energy spectra of cosmic ray secondary antiprotons and positrons using the latest available data on inclusive reactions. Using the measured positron spectrum, we have found that the amount of matter traversed by the cosmic rays in the few GeV region to be 4.7 (+ or - 1.5) g/sq cm of interstellar hydrogen. The computed antiproton to proton ratio is about .0004 for energies 5-10 GeV. This is sufficient to make observations of antiprotons feasible from balloon flights. We have also pointed out the type of information that can be obtained if accurate information of the spectra of these two components becomes available.
    Keywords: SPACE RADIATION
    Type: Astrophysics and Space Science; 37; Oct. 197
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  • 5
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    A search for gamma-ray spectral lines from the Galactic Center by HEAO-1 (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Preliminary results are reported for a search by HEAO 1 for gamma-ray lines from the Galactic Center in the energy range from 1.5 to 8 MeV. The hard X-ray/low-energy gamma-ray instrument aboard HEAO 1 is briefly described, and results are examined which indicate no obvious statistically significant spectral lines from the Galactic Center. It is concluded that the present observations fail to confirm the previously reported 4.4-MeV flux from the Galactic Center but that the existence of the reported 4.4-MeV feature cannot be strongly rejected on the basis of these results.
    Keywords: SPACE RADIATION
    Type: X-ray astronomy; May 29, 1978 - Jun 10, 1978; Innsbruck; Austria
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  • 6
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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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  • 7
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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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  • 8
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    Acceleration of trapped particles during a magnetic storm on 18 April 1965 (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Acceleration of trapped particles during magnetic storm on 18 Apr. 1965 observed by Explorer 26
    Keywords: SPACE RADIATION
    Type: REDUCTION AND ANALYSIS OF PARTICLE DATA FROM EXPLORER 15 AND EXPLORER 26 28 FEB. 1971 (SEE N71-30919 18-29)
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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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
  • 10
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    Crystal activation experiment MA-151 (1976)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The crystal activation experiment consisted of two sample packages that were flown in the command module and returned to earth for analysis of the radioactivity induced in them during the flight. The objective of the experiment was to define the background caused by detector activation that interferes when gamma radiation is measured in the 0.02- to 10-megaelectronvolt range from earth orbit. Preliminary results show that the activation of the NaI(Tl) crystal was a factor of 3 below that from a similar measurement on Apollo 17. The identification of certain species and the level of activation observed show an important contribution from the interactions of thermal and energetic neutrons produced as secondaries in the spacecraft. That the activation was reduced by only a factor of 3 compared with the Apollo 17 experiment, despite the geomagnetically shielded orbit, possibly indicates more efficient secondary neutron production by the more energetic cosmic rays.
    Keywords: SPACE RADIATION
    Type: Apollo-Soyuz Test Project; 10 p
    Format: text
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