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  • Other Sources  (124)
  • SPACE RADIATION  (85)
  • BIOTECHNOLOGY  (39)
  • Cell & Developmental Biology
  • Chemical Engineering
  • 1980-1984
  • 1970-1974  (124)
  • 1955-1959
  • 1950-1954
  • 1974  (124)
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  • 1980-1984
  • 1970-1974  (124)
  • 1955-1959
  • 1950-1954
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  • 11
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    SAS-2 observations of the galactic gamma radiation from the Vela region (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Data from a scan of the galactic plane by the SAS-2 high energy gamma ray experiment in the region 250 deg l2 290 deg show a statistically-significant excess over the general radiation from the galactic plane for gamma radiation of energy 100 MeV in the region 260 deg l2 270 deg and -7.5 deg b2 0 deg. If the enhanced gamma radiation results from interactions of cosmic rays with galactic matter, as the energy spectrum suggests, it seems reasonable to associate the enhancement with large scale galactic features, such as spiral arm segments in that direction, or with the region surrounding the Vela supernova remnant, with which PSR 0833-45 is associated. If the excess is attributed to cosmic rays released from this supernova interacting with the interstellar matter in that region, then on the order of 3.10 to the 50th power ergs would be released by that supernova in the form of cosmic rays.
    Keywords: SPACE RADIATION
    Type: NASA-TM-X-72582
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 12
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    High energy gamma ray results from the second small astronomy satellite (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A high energy (35 MeV) gamma ray telescope employing a thirty-two level magnetic core spark chamber system was flown on SAS 2. The high energy galactic gamma radiation is observed to dominate over the general diffuse radiation along the entire galactic plane, and when examined in detail, the longitudinal and latitudinal distribution seem generally correlated with galactic structural features, particularly with arm segments. The general high energy gamma radiation from the galactic plane, explained on the basis of its angular distribution and magnitude, probably results primarily from cosmic ray interactions with interstellar matter.
    Keywords: SPACE RADIATION
    Type: NASA-TM-X-70761 , X-662-74-304
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 13
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    Gamma-ray observations from the OSO-3 satellite (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The result on gamma-rays obtained from the analysis of 5800 orbits of data from the University of Rochester telescope on board the OSO-3 satellite are presented. For gamma-rays of energy greater than 100 MeV, an upper limit of .00023 per sq cm per sec std has been placed on the diffuse (assumed isotropic) flux. An upper limit to the flux from the sun is set at .000032 and .000024 per sq cm per sec for energies greater than 50 and 100 MeV, respectively. All flux values are calculated assuming a neutral pion-decay source of gamma-rays.
    Keywords: SPACE RADIATION
    Type: Astrophysics and Space Science; 27; Mar. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 14
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    Six-man, self-contained carbon dioxide concentrator system (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A six man, self contained electrochemical carbon dioxide concentrating subsystem was successfully designed and fabricated. It was a preprototype engineering model designed to nominally remove 6.0 kg (13.2 lb) CO2/day with an inlet air CO2 partial pressure of 400 N/sq m (3 mm Hg) and an overcapacity removal capability of 12.0 kg (26.4 lb) CO2/day. The design specifications were later expanded to allow operation at space station prototype CO2 collection subsystem operating conditions.
    Keywords: BIOTECHNOLOGY
    Type: NASA-CR-114743 , LSI-ER-134-32
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 15
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    Gamma radiation from the Crab nebula above 35 MeV (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Electromagnetic radiation from the Crab nebula were observed, showing that the Crab is unique among strong X-ray sources in that major component in the low energy range (1 to 10 KeV) shows little or no temporal variation. Observations of the Crab above 35 MeV were made with the high energy gamma ray telescope flown on SAS-2. The detector and technique are described in detail.
    Keywords: SPACE RADIATION
    Type: NASA-TM-X-70734 , X-662-74-236
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 16
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    Life support subsystem monitoring instrumentation (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The recognition of the need for instrumentation in manned spacecraft life-support subsystems has increased significantly over the past several years. Of the required control and monitoring instrumentation, this paper will focus on the monitoring instrumentation as applied to life-support subsystems. The initial approach used independent sensors, independent sensor signal conditioning circuitry, and independent logic circuitry to provide shutdown protection only. This monitoring system was replaced with a coordinated series of printed circuit cards, each of which contains all the electronics to service one sensor and provide performance trend information, fault detection and isolation information, and shutdown protection. Finally, a review of sensor and instrumentation problems is presented, and the requirement for sensors with built-in signal conditioning and provisions for in situ calibration is discussed.
    Keywords: BIOTECHNOLOGY
    Type: ASME PAPER 74-ENAS-25 , Intersociety Conference on Environmental Systems; Jul 29, 1974 - Aug 01, 1974; Seattle, WA; US
    Format: text
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    NASA TECHNICAL REPORTS
  • 17
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    Helicopter flight investigation to determine the effects of a closed-circuit TV on performance of a precision sling-load handling task (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Helicopter sling-load operations have been limited during hover and low-speed flight by the degree of precision achieved by the pilot/helicopter/sling-load combination. Previous attempts to improve precision have included stabilization of the load and helicopter and the addition of a pilot station directly facing the load. In these tests, use of a closed-circuit TV as a display that would permit sling-load delivery and placement by the forward-facing pilot was evaluated using a CH-54B helicopter. In all, three test cases were documented, which included the following: (1) forward-facing pilot using the TV display, (2) forward-facing pilot using verbal commands from a load-facing observer, and (3) aft-facing pilot using direct visual cues. The results indicate that a comparable level of performance was achieved for each test case; however, an increase in pilot workload was noted when the TV system was used.
    Keywords: BIOTECHNOLOGY
    Type: AHS PREPRINT 862 , Annual National V/STOL Forum; May 07, 1974 - May 09, 1974; Washington, DC
    Format: text
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    NASA TECHNICAL REPORTS
  • 18
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    High energy galactic gamma radiation from cosmic rays concentrated in spiral arms (1974)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A model for the emission of high energy ( 100 MeV) gamma rays from the galactic disk was developed and compared to recent SAS-2 observations. In the calculation, it is assumed that (1) the high energy galactic gamma rays result primarily from the interaction of cosmic rays with galactic matter; (2) on the basis of theoretical and experimental arguments the cosmic ray density is proportional to the matter density on the scale of galactic arms; and (3) the matter in the galaxy, atomic and molecular, is distributed in a spiral pattern consistent with density wave theory and the experimental data on the matter distribution.
    Keywords: SPACE RADIATION
    Type: NASA-TM-X-70818 , X-662-75-2 , High energy galactic gamma radiation from commic rays concentrated in spiral arms; Dec 01, 1974; Greenbelt, MD; United States
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    NASA TECHNICAL REPORTS
  • 19
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    Gamma-ray lines from novae (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: An appropriate gamma-ray telescope could detect the gamma-rays associated with radioactive decays. The observable lines would be the annihilation radiation following the positron emission of N-13, O-14, O-15, and Na-22 and the 2.312-MeV line emitted following the O-14 decay and the 1.274-MeV line emitted following the Na-22 decay. The experimental possibility should be borne in mind for the occurrence of novae within a few kiloparsecs.
    Keywords: SPACE RADIATION
    Type: Astrophysical Journal; 187; Feb. 1
    Format: text
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    NASA TECHNICAL REPORTS
  • 20
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    Configuration and design study of manipulator systems applicable to the freeflying teleoperator. Volume 2: Preliminary design (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The preliminary design of a remotely controlled teleoperator for space application is reported that depends on man for control inputs and extends operation of the space shuttle.
    Keywords: BIOTECHNOLOGY
    Type: NASA-CR-120403 , MCR-74-290-VOL-2
    Format: application/pdf
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