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  • Organic Chemistry  (1,409)
  • ASTROPHYSICS  (1,124)
  • METEOROLOGY AND CLIMATOLOGY  (649)
  • Humans
  • 1980-1984  (3,768)
  • 1982  (1,813)
  • 1981  (1,955)
Collection
Keywords
Publisher
Years
  • 1980-1984  (3,768)
Year
  • 1
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    Results on the verification of satellite data based on a comparison with radiosonde data (1982)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Results of the verification of satellite wind data are represented by comparing them with radiosonde data for the geostationary satellites METEOSAT, GOES and GMS. The quality of METEOSAT pictures improved, reaching the quality of GOES and GMT wind data.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-TM-76691 , NAS 1.15:76691
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Calculation of the attenuation and phase displacement per unit of length due to rain composed of ellipsoidal drops (1981)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: All of the phenomena which influence the propagation of radiowaves at frequencies above 10 GHz (attenuation, depolarization, scintillation) can by intensified by parameters directly derived from a solution of individual scatter, naturally in addition to be meteorological elements which characterize the physical medium. The diffusion caused by rainy precipitation was studied using Mie's algorithm for rain composed of spherical drops, and Oguchi's algorithm for rain composed of drops in an ellipsoidal form with axes of rotational symmetry arrange along the vertical line of a generic reference point. Specific phase displacement and attenuation along the principal planes, propagation of radiowaves in generic polarization, and propagation with inclined axes are also considered.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-TM-76592 , RIF-1B1778
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    The evolution of massive stars (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The hypotheses underlying theoretical studies of the evolution of massive model stars with and without mass loss are summarized. The evolutionary tracks followed by the models across theoretical Hertzsprung-Russell (HR) diagrams are compared with the observed distribution of B stars in an HR diagram. The pulsational properties of models of massive star are also described.
    Keywords: ASTROPHYSICS
    Type: B Stars With and Without Emission Lines, Parts 1 and 2; p 199-229
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Long Periodic Terms in the Solar System (1982)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The long period variations of the first eight planets in the solar system are studied. First, the Lagrangian solution is calculated and then the long period terms with fourth order eccentricities and inclinations are introduced into the perturbation function. A second approximation was made taking into account the short period terms' contribution, namely the perturbations of first order with respect to the masses. Special attention was paid to the determination of the integration constants. The relative importance of the different contributions is shown. It is useless, for example, to introduce the long period terms of fifth order if no account has been taken of the short period terms. Meanwhile, the terms that have been neglected would not introduce large changes in the integration constants. Even so, the calculation should be repeated with higher order short period terms and fifth order long periods.
    Keywords: ASTROPHYSICS
    Type: NASA-TM-76994 , NAS 1.15:76994
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Gamma Ray Astrophysics: New insight into the universe (1981)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Gamma ray observations of the solar system, the galaxy and extragalactic radiation are reported. Topics include: planets, comets, and asteroids; solar observations; interstellar medium and galactic structure; compact objects; cosmology; and diffuse radiation. The instrumentation used in gamma ray astronomy in covered along with techniques for the analysis of observational spectra.
    Keywords: ASTROPHYSICS
    Type: NASA-SP-453 , NAS 1.21:453 , LC-81-600116
    Format: application/pdf
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  • 6
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    Wind measurements by parachute (1982)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Tests used the 8 cm Lotta grenade as well as 12 cm M/70 and 10.5 m/62 grenades, released at altitudes between 2000 and 6400 meters. The parachutes were tracked by AP and RFK. In later experiments wind data were also obtained for comparison by tracking hydrogen filled balloons in part with the CORA system, in part with radar. Generally radar picked up the objects without visual assistance. Wind measurements from parachutes correlated well with those obtained by balloon. Even when the radar locked on to a part of a grenade, descending faster than the parachute, some of the measurements obtained were good. Bodies with a greater rate of descent than parachutes, with less or no tendency toward drift and with sufficient, surface for radar tracking, ought to provide reliable results. The existence of vertically well defined winds of jet stream type at low altitudes was established.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-TM-76698 , NAS 1.15:76698
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Evaluation of photogrammetric flight under icing conditions on March 23, 1978 (1981)
    In:  CASI
    Details
    Publication Date: 2019-08-27
    Description: In a double passage through a route laid out in a stagnation zone of the Bavarian forest, it was found that the stagnation and attendant elevation increases the danger of icing. Conversely, it turned out that formation of precipitation reduces the icing intensity. A comparison of both factors showed: the reduction of ice formation through precipitation equals the increase due to stagnation, or even exceeds it.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-TM-76617
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Measurement of characteristics of lightning at high altitudes (1981)
    In:  CASI
    Details
    Publication Date: 2019-08-27
    Description: New development in aeronautical technology -- the use of composite materials, new electronic components, electric flight controls -- have made aircraft potentially more and more vulnerable to the effects of lightning. In-flight tests were conducted to evaluate the current in a bolt of lightning, to measure voltage surge in the onboard circuitry and in certain pieces of equipment, and to document the relationship lightning bolt current and the voltage surge so as to develop a theoretical model and thuds to become acquainted with the significant
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-TM-76669
    Format: application/pdf
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  • 9
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    Accuracy, reproducibility and vertical resolution of data from radiosondes (1982)
    In:  CASI
    Details
    Publication Date: 2019-08-27
    Description: In a comparison of three radiosonde-systems typical data deviations as well as their reproducibility could be determined. Basic considerations regarding a possible vertical resolution are followed by a suggestion as to how the ascent velocity of the balloon could be utilized to determine vertical winds.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-TM-76949 , NAS 1.15:76949 , Jan 01, 1980; Mannheim; Germany
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Applications of stereoscopic height computations from dual geosynchronous satellite data/joint NASA-Japan stereo project (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-08-13
    Description: Stereoscopic heights of the top of an Oklahoma thunderstorm were computed, finding that high cloud tops are not always characterized by very cold IR temperature. The identical method was also applied to the computation of stereo heights based on GOES West and GMS stereo pairs obtained under the NASA-JAPAN cooperative program. It was found that stereo techniques are extremely useful in understanding the structure of thunderstorms in the United States, as well as that of hurricanes over the South Pacific.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: (ISSN 0273-1177)
    Format: text
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