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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Meteorology and atmospheric physics 1 (1949), S. 375-383 
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Der Verf. geht von dervon Bezold'schen Definition (1888) der potentiellen Temperatur aus und definiert die hauptsächlichen Begriffe der potentiellen Temperatur, die vorgeschlagen wurden; dabei untersucht er speziell die adiabatische und die isobarische äquivalent-potentielle Temperatur sowie diejenige des feuchten Thermometers. Er kommt zum Ergebnis, daß die Bezeichnungen adiabatisch und isobarisch sich auf verschiedene Begriffe beziehen und deshalb nur in bestimmten Fällen vertauscht werden dürfen.
    Abstract: Summary Starting from the definition of the potential temperature byvon Bezold (1888), the author defines rationally the principal potential temperatures which have been proposed. On this occasion he examines especially the adiabatic and the isobaric equivalent potential temperatures and that of the wet-bulb thermometer. He comes to the conclusion that the qualifications adiabatic and isobaric refer to different notions which can be substituted only in certain cases.
    Notes: Résumé En partant de la définition de la température potentielle donnée parvon Bezold en 1888, l'auteur définit rationellement les principales températures potentielles qui ont été proposées. A cette occasion, il examine particulièrement les températures potentielles adiabatique et isobarique équivalentes et du thermomètre mouillé. Il en conclut que les qualifications adiabatique et isobarique s'appliquent à des notions différentes qui ne peuvent être confondues que dans certains cas.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Oxidation of metals 37 (1992), S. 39-63 
    ISSN: 1573-4889
    Keywords: oxide morphology ; platelets ; oxidation kinetics ; water vapor ; carbon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A very specific oxide morphology consisting in rounded oxide platelets a few microns in diameter has been obtained on pure nickel. The main experimental factors in the achievement of such a controlled morphology have been thoroughly investigated. Platelets are produced in the temperature range from 600 to 850°C and for oxidation times varying from a hundred hours to a very few minutes. Platelets could not be grown on very pure nickel. Scanning electron microscopy has been used extensively, and the corresponding observations are reported in the first part of this study together with thermogravimetric results.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Oxidation of metals 39 (1993), S. 137-154 
    ISSN: 1573-4889
    Keywords: nickel oxidation ; NiO platelets ; mechanism of growth ; impurity segregation ; electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The structural properties of NiO platelets emerging from a primary oxide layer by oxidation of pretreated nickels in pure oxygen between 650 and 800° C have been investigated in relation with the initial metallic layers and the primary oxide. Surface composition and segregation of impurities were also studied by X-ray photoelectron spectroscopy and Auger electron spectroscopy. Textural properties and structural orientation of both the primary oxide layer and the platelets were analyzed by X-ray diffraction and transmission electron microscopy. Platelets grew along {111} planes, leading to elliptical or semicircular bicrystals. The driving force for the present type of growth originates from the stresses accumulated in the thin, primary oxide layer. Impurities do not directly interact with this growth, but enable a specific grain structure to be developed thereby favoring platelet growth.
    Type of Medium: Electronic Resource
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  • 4
    Publication Date: 1949-06-01
    Print ISSN: 0177-7971
    Electronic ISSN: 1436-5065
    Topics: Geography , Physics
    Published by Springer
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  • 5
    Publication Date: 1948-07-01
    Print ISSN: 0016-7428
    Electronic ISSN: 1931-0846
    Topics: Geography
    Published by Wiley
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