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  • 1
    Electronic Resource
    Electronic Resource
    Theory of transport processes in single crystal growth from the melt (1988)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 34 (1988), S. 881-911 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The quality of large semiconductor crystals grown from the melt for use in electronic and optoelectronic devices is strongly influenced by the intricate coupling of heat and mass transfer and melt flow in growth systems. This paper reviews the present state of understanding of these processes starting from the simplest descriptions of solidification processes to detailed numerical calculations needed for quantitative modeling of processing with solidification. Descriptions of models for the vertical Bridgman-Stockbarger and Czochralski crystal growth techniques are included as examples of the level of understanding of industrially important methods.
    Additional Material: 24 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690340602
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Summary of “an operator's experience with stress corrosion cracking of ammonia spheres” (1983)
    New York, NY : Wiley-Blackwell
    Plant/Operations Progress 2 (1983), S. 258-258 
    Details
    ISSN: 0278-4513
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prsb.720020415
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Damage detection, repair, and prevention in an ammonia storage sphere (1982)
    New York, NY : Wiley-Blackwell
    Plant/Operations Progress 1 (1982), S. 97-101 
    Details
    ISSN: 0278-4513
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prsb.720010207
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    Paper (German National Licenses)
    Fulltext
  • 4
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    Progress in extra-solar planet detection (1991)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Progress in extra-solar planet detection is reviewed. The following subject areas are covered: (1) the definition of a planet; (2) the weakness of planet signals; (3) direct techniques - imaging and spectral detection; and (4) indirect techniques - reflex motion and occultations.
    Keywords: ASTROPHYSICS
    Type: NAS-NRC, Planetary Sciences: American and Soviet Research; p 270-287
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Space Station Freedom - A resource for aerospace education (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The role of the International Space Station in future U.S. aerospace education efforts is discussed from a NASA perspective. The overall design concept and scientific and technological goals of the Space Station are reviewed, and particular attention is given to education projects such as the Davis Planetarium Student Space Station, the Starship McCullough, the Space Habitat, the working Space Station model in Austin, TX, the Challenger Center for Space Life Education, Space M+A+X, and the Space Science Student Involvement Program. Also examined are learning-theory aspects of aerospace education: child vs adult learners, educational objectives, teaching methods, and instructional materials.
    Keywords: SOCIAL SCIENCES (GENERAL)
    Type: IAF PAPER 88-467
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    IRAS F15307+3252: A hyperluminous infrared galaxy at z = 0.93 (1994)
    In:  Other Sources
    Details
    Publication Date: 2019-08-27
    Description: A new hyperluminous infrared galaxy in the Infrared Astronomy Satellite (IRAS) Faint Source Catalog is identified at a redshift of 0.93. This object has a bolometric luminosity of approximately 10(exp 13) solar luminosity, a very large ratio of infrared-to-optical luminosity, warm dust emission, a ratio of infrared-to-radio flux densities consistent with other infrared galaxies, and an optical spectrum similar to a Seyfert 2 galaxy. IRAS F15307+3552 shares these characteristics and its radio-to-optical spectral energy distribution with two other infrared galaxies, F10214+4724 and P09104+4109. Discovery of a third object with these properties defines an extreme subclass of ultraluminous galaxies powered primarily by star formation. The systematic method used to find this object begins the process of determining the space density of these most luminous examples of the infrared galaxy phenomenon.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X); 424; 2; p. L65-L68
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    On the feasibility of detecting extrasolar planets by reflected starlight using the Hubble Space Telescope (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: The best metrology data extant are presently used to estimate the center and wing point-spread function of the HST, in order to ascertain the implications of an observational criterion according to which a faint source's discovery can occur only when the signal recorded near its image's location is sufficiently larger than would be expected in its absence. After defining the maximum star-planet flux ratio, a figure of merit Q, defined as the contrast ratio between a 'best case' planet and the scattered starlight background, is introduced and shown in the HST's case to be unfavorable for extrasolar planet detection.
    Keywords: ASTROPHYSICS
    Type: Icarus (ISSN 0019-1035); 87; 484-497
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Space education in the context of U.S. Government multiagency efforts in science and mathematics education (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-08-27
    Description: The status of a multiagency endeavor to involve U.S. Federal agencies in the attainment of National Education Goals for the 1990's is presented. Emphasis is placed on the educational activities of NASA, which is one of 16 Federal agencies on the Federal Coordinating Council for Science, Engineering and Technology. NASA's is a prototype education program for achieving excellence in mathematics and science in the coming generations of Americans.
    Keywords: SOCIAL SCIENCES (GENERAL)
    Type: IAF PAPER 91-524
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Space education in the context of U.S. government multiagency efforts in science and mathematics education (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The educational activities of NASA which is one of 16 agencies on the Federal Coordinating Council for Science, Engineering and Technology is discussed. NASA's education mission is to utilize its unique facilities and its specialized workforce to conduct and to leverage externally conducted science, mathematics, and technology education programs and activities. These efforts aimed at meeting the national education goals should help to preserve U.S. leadership in aeronautics, space science, and technology.
    Keywords: SOCIAL SCIENCES (GENERAL)
    Type: AIAA PAPER 92-1687
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    NASA's educational programs (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The educational programs of NASA's Educational Affairs Division are examined. The problem of declining numbers of science and engineering students is reviewed. The various NASA educational programs are described, including programs at the elementary and secondary school levels, teacher education programs, and undergraduate, graduate, and university faculty programs. The coordination of aerospace education activities and future plans for increasing NASA educational programs are considered.
    Keywords: SOCIAL SCIENCES (GENERAL)
    Type: Government Information Quarterly (ISSN 0740-624X); 7; 2, 19
    Format: text
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    NASA TECHNICAL REPORTS
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