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  • Other Sources  (1,035)
  • STRUCTURAL MECHANICS  (398)
  • SOLAR PHYSICS  (352)
  • BIOTECHNOLOGY  (285)
  • Physics
  • 1980-1984  (483)
  • 1970-1974  (552)
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  • 1
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    An evaluation of Orbital Workshop passive thermal control surfaces (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The optical properties of selected Orbital Workshop thermal control surfaces are discussed from the time of their installation through the end of the Skylab missions. The surfaces considered are the goldized Kapton tape on the habitation area sidewall, the S-13G white paint on the Workshop aft skirt, and the multilayer insulation system on the forward dome of the habitation area. A quantitative assessment of the effects of exposure to the ascent and orbital environments is made including the effects of rocket exhaust plume contamination. Although optical property degradation of the external surfaces was noted, satisfactory thermal performance was maintained throughout the Skylab missions.
    Keywords: BIOTECHNOLOGY
    Type: ASME PAPER 74-ENAS-39 , Intersociety Conference on Environmental Systems; Jul 29, 1974 - Aug 01, 1974; Seattle, WA; US
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  • 2
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    System distortion errors in radiorespirometry curves. (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Description of a method for evaluating the maximum error producible in the system distortion of a carrier gas type radiorespirometer. The maximum producible error is evaluated on the basis of a second order. The maximum producible decrease in peak height output is calculated as a function of the system's time constant or flow rate by using the system's transfer function and the Laplace transformation equation (Gardner and Barnes, 1961).
    Keywords: BIOTECHNOLOGY
    Type: International Journal of Applied Radiation and Isotopes; 22; 1971
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  • 3
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    Observations of a probable change in the solar radius between 1715 and 1979 (1980)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: A decrease in the solar radius is determined using the technique of Dunham and Dunham (1973), in which timed observations are made just inside the path edges. When the method is applied to the solar eclipses of 1715, 1976, and 1979, the solar radius for 1715 is 0.34 + or - 0.2 arc second larger than the recent values, with no significant change between 1976 and 1979. The duration of totality is examined as a function of distance from the edges of the path. Corrections to the radius of the sun derived from observations of the 1976 and 1979 eclipses by the International Occultation Timing Association are also presented.
    Keywords: SOLAR PHYSICS
    Type: Science; 210; Dec. 12
    Format: text
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  • 4
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    Diode laser heterodyne observations of silicon monoxide in sunspots - A test of three sunspot models (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Absorption features from the 8 micron SiO fundamental (upsilon = 1-0) and hot bands (upsilon = 2-1) have been observed in sunspots at sub-Doppler resolution using a ground-based tunable diode laser heterodyne spectrometer. The observed line widths suggest an upper limit of 0.5 km/s for the microturbulent velocity in sunspot umbrae. Since the silicon monoxide abundance is very sensitive to sunspot temperature, the measured equivalent widths permit an unambiguous determination of the temperature-pressure relation in the upper layers of the umbral atmosphere. In the region of SiO line formation (log P sub g = 3.0-4.5), the results support the sunspot model suggested by Stellmacher and Wiehr (1970).
    Keywords: SOLAR PHYSICS
    Type: Astrophysical Journal, Part 1 (ISSN 0004-637X); 269; June 1
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  • 5
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    C14-radiorespirometry system for astronaut medical monitoring. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A C14-CO2 radiorespirometry-computer system for monitoring human metabolism during space missions is described. Data collection using this apparatus is an effective 'real time' system allowing rapid, low-cost data processing which is ideal for telemetering signals from spacecraft to earth.
    Keywords: BIOTECHNOLOGY
    Type: Aerospace Medical Association, Annual Scientific Meeting; May 08, 1972 - May 11, 1972; Bal Harbour, FL
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  • 6
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    A solar activity monitoring platform for SCADM (1980)
    In:  CASI
    Details
    Publication Date: 2006-01-16
    Description: The adaptation of proven space probe technology is proposed as a means of providing a solar activity monitoring platform which could be injected behind the Earth's orbital position to give 3 to 6 days advanced coverage of the solar phenomenon on the backside hemisphere before it rotates into view and affects terrestrial activities. The probe would provide some three dimensional discrimination within the ecliptic latitude. This relatively simple off-Earth probe could provide very high quality data to support the SCADM program, by transmitting both high resolution video data of the solar surface and such measurements of solar activity as particle, X-ray, ultraviolet, and radio emission fluxes. Topics covered include the orbit; constraints on the spacecraft; subsystems and their embodiments; optical imaging sensors and their operation; and the radiation-pressure attitude control system are described. The platform would be capable of mapping active regions on an hourly basis with one arc-second resolution.
    Keywords: SOLAR PHYSICS
    Type: NASA. Goddard Space Flight Center Study of the Solar Cycle from Space; p 45-54
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  • 7
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    The contingent negative variation and the late positive wave of the average evoked potential (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: EEG analysis for poststimulus events, examining contingent negative variation and late positive wave of average evoked potential
    Keywords: BIOTECHNOLOGY
    Type: ; DIOTEKHNIKA (
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  • 8
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    Measurements, modeling, control and simulation - as applied to the human left ventricle for purposeful physiological monitoring. (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Interdisciplinary engineering research effort in studying the intact human left ventricle has been employed to physiologically monitor the heart and to obtain its 'state-of-health' characteristics. The left ventricle was selected for this purpose because it plays a key role in supplying energy to the body cells. The techniques for measurement of the left ventricular geometry are described; the geometry is effectively displayed to bring out the abnormalities in cardiac function. Methods of mathematical modeling, which make it possible to determine the performance of the intact left ventricular muscle, are also described. Finally, features of a control system for the left ventricle for predicting the effect of certain physiological stress situations on the ventricle performance are discussed.
    Keywords: BIOTECHNOLOGY
    Type: Franklin Institute; vol. 292
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  • 9
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    Thermal bifurcation in the upper photosphere inferred from heterodyne spectroscopy of OH rotational lines (1984)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Low-noise (S/N greater than 100), high spectral resolution observations of two pure rotation transitions of OH from the solar photosphere are used to make inferences concerning the thermal structure and inhomogeneity of the upper photosphere. It is found that the v = O R22(24.5)e line strengthens at the solar limb, in contradiction to the predictions of current one-dimensional photospheric models. The results for this line support a two-dimensional model in which horizontal thermal fluctuations in the upper photosphere are of the order plus or minus 800 K. This thermal bifurcation may be maintained by the presence of magnetic flux tubes and may be related to the solar limb extensions observed in the 30-200-micron region.
    Keywords: SOLAR PHYSICS
    Type: Solar Physics (ISSN 0038-0938); 94; 57-74
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  • 10
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    The elastic layer with a cylindrical hole subjected to a nonuniform axisymmetric radial displacement. (1973)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: A problem in the linear theory of elasticity is considered wherein a layer with a circular cylindrical hole is subjected to a nonuniform axisymmetric radial displacement. The solution utilizes Navier's equations of elasticity which are solved by means of extended Hankel transforms. A special case in which the radial displacement is a linear function of the axial coordinate is presented. Numerical results are given in graphical form for the case when hole radius and layer thickness are equal. The inversion integrals were evaluated numerically using Longman's technique for computing infinite integrals of oscillatory functions.
    Keywords: STRUCTURAL MECHANICS
    Type: Acta Mechanica; 17; 1-2,; 1973
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