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  • Other Sources  (5)
  • ASTRONOMY  (3)
  • AEROSPACE MEDICINE  (2)
  • Life and Medical Sciences
  • 2005-2009
  • 1990-1994
  • 1985-1989  (5)
  • 1945-1949
  • 1986  (5)
  • 1946
  • 1
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    Planetary astronomy (1986)
    In:  CASI
    Details
    Publication Date: 2006-02-14
    Description: Comets were studied during their relatively quiescent phases at large distances from the sun. This program, has resulted in a variety of CCD images of comets in several visible and near-IR bands selected to sample the continuum, rather than emission features. The most extensive dataset was obtained for P/Halley during January 1985 (plus scattered earlier data), near the time the comet turned on. The data were reduced in a preliminary fashion. Other comets predicted to be relatively inactive (including Neujmin 1 and Arend-Rigaux) were most active than expected. P/Gehrels 3 was also observed.
    Keywords: ASTRONOMY
    Type: NASA, Washington Reports of Planetary Astronomy, 1985; p 82-84
    Format: text
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  • 2
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    Space motion sickness (1986)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Space motion sickness clinical characteristics, time course, prediction of susceptibility, and effectiveness of countermeasures were evaluated. Although there is wide individual variability, there appear to be typical patterns of symptom development. The duration of symptoms ranges from several hours to four days with the majority of individuals being symptom free by the end of third day. The etiology of this malady remains uncertain but evidence points to reinterpretation of otolith inputs as being a key factor in the response of the neurovestibular system. Prediction of susceptibility and severity remains unsatisfactory. Countermeasures tried include medications, preflight adaptation, and autogenic feedback training. No countermeasure is entirely successful in eliminating or alleviating symptoms.
    Keywords: AEROSPACE MEDICINE
    Type: ESA Proceedings of 2nd International Conference on Space Physiology; p 137-142
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Velocity-resolved observations of water in Comet Halley (1986)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: High resolution (lambda/delta lambda approx. = 3 x 10 to the 5th power) near-infrared observations of H2O emission from Comet Halley were acquired at the time of maximum post-perihelion geocentric Doppler shift. The observed widths and absolute positions of the H2O line profiles reveal characteristics of the molecular velocity field in the coma. These results support H2O outflow from a Sun-lit hemisphere or the entire nucleus, but not from a single, narrow jet emanating from the nucleus. The measured pre- and post-perihelion outflow velocities were 0.9 + or - 0.2 and 1.4 + or - 0.2 km/s, respectively. Temporal variations in the kinematic properties of the outflow were inferred from changes in the spectral line shapes. These results are consistent with the release of H2O into the coma from multiple jets.
    Keywords: ASTRONOMY
    Type: NASA-TM-88367 , PREPRINT-58 , A-86410 , NAS 1.15:88367
    Format: application/pdf
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  • 4
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    Bedrest in healthy women: Effects of menstrual function and oral contraceptives (1986)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: With the development of the space shuttle program, space flight for the first time is available to individuals who have not been specially selected and trained to be astronauts. In addition, women are being actively recruited into the space program, both as mission specialists and as career astronauts. One purpose of this project was to examine some of the physiological responses of women to a simulated weightlessness program (12 day horizontal bedrest), to compare their responses to those reported in men during similar programs, and to test whether menstrual function might alter some of the physiological changes which occur during bedrest, specifically changes in the plasma volume, exercise tolerance, and venous compliance before and after bedrest.
    Keywords: AEROSPACE MEDICINE
    Type: NASA-CR-171946 , NAS 1.26:171946
    Format: application/pdf
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  • 5
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    The measured performance of a grazing incidence relay optics telescope for solar X-ray astronomy (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-07-27
    Description: The design, fabrication, and test performance of a grazing-incidence diverging magnifier (GIDM) for use in high-resolution X-ray imaging of the solar corona are described. The GIDM, designed to be mounted in front of the focus of a 30.48-cm Wolter-Schwarzschild primary, is an Ni-coated Be hyperboloid-hyperboloid structure of principal diameter 3.15 cm; the two components are mounted on a central steel plate which acts as a support and spacer. The combined instrument has overall length 1.9 m, effective focal length 5.4 m, and plate scale 26.0 micron/arcsec. In point- and line-source measurements in an 89.5-m vacuum test facility, the on-axis resolution is shown to be equal to that of the primary alone. The field of view for 1-arcsec resolution is limited to 1.25 arcmin in radius, but the effective-area limitation is less significant when CCD detectors of high quantum efficiency are used instead of film.
    Keywords: ASTRONOMY
    Type: X-ray imaging II; Aug. 20, 21, 1986; San Diego, CA; United States
    Format: text
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