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  • 1980-1984  (4)
  • 1940-1944
  • 1980  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 295 (1980), S. 7-16 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The excited-projectile state density matrix is derived from the impact-parameter version of the Oppenheimer-Brinkman-Kramers approximation for a one electron-capture process from localized target states. The result is used to determine the Stokes parameters of the emitted light. General conditions for the production of atomic orientation are investigated and the connection to a recently published classical model is established. Large values of atomic orientation and alignment are found for capture into a hydrogenic 2p state of the projectile. A simple model for the beam-tilted-foil interaction yields a sinβ dependence of the circular polarization on the tilt angleβ. Model calculations for beam-surface scattering show good agreement with experimental data for the relative Stokes parameters.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 227 (1980), S. 635-636 
    ISSN: 1434-4726
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 31 (1980), S. 866-869 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Wear-resistance of anti-corrosion coatings in hydraulic steel constructionsDIN 55 928 gives rules for the protection of steel structures from corrosion by organic and metallic coatings. The durability against abrasion of such coatings is classified in part 5, table 8, columns 9-11, of this DIN. A notice to these columns gives indication of an abrasion-machine developed by the Bundesanstalt für Wasserbau in Karlsruhe.Giving the best results, this machine for testing the mechanic durability was chosen out of a number of testing systems. The result is an abrasion value (Abriebwert).This value enables us to classify the coatings in accordance with their durability.The abrasion machine, its main dimensions and its working are described.
    Notes: In der Tabelle 8 des Teils 5 der DIN 55 928 - Korrosionsschutz von Stahlbauten durch Beschichtungen und Überzüge - wird in Spalte 9-11 die mechanische Beanspruchung der Beschichtungen klassifiziert und in einer Bemerkung dazu auf ein Prüfgerät hingewiesen, das bei der Bundesanstalt für Wasserbau in Karlsruhe entwickelt wurde.Das Prüfgerät ist das Ergebnis einer längeren Entwicklung; es ermöglicht die Angabe eines „Abriebwertes“ als Abstufung der Belastbarkeit von Beschichtungssystemen.Die Entwicklung des Prüfgerätes wird dargelegt und das Prüfgerät sowie der Prüfvorgang beschrieben.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 209 (1980), S. 295-313 
    ISSN: 1432-0878
    Keywords: Epithelial differentiation ; Keratohyalin granules ; Transitional cells ; Keratin pattern ; Human hard-palate epithelium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Das Epithel des normalen menschlichen harten Gaumens ist ein keratinisierendes Integument. Stereologische Untersuchungen haben gezeigt, daß sich dieses Epithel in der Differenzierung und im Typ der Keratinisation von der Epidermis unterscheidet. Das Ziel der vorliegenden Arbeit ist, eine systematische licht- und elektronenmikroskopische Beschreibung dieses Epithels — unter besonderer Berücksichtigung der Differenzierungsphänomene — mit den entsprechenden stereologischen Daten zu vergleichen. Zwanzig Stanzbiopsien von 9-bis 16-jährigen Mädchen wurden untersucht. Die Beobachtungen zeigten: 1) Die Epithelzellen des Stratum spinosum sind länglich oder annähernd isodiametrisch in den Epithelleisten und nehmen oberhalb des Niveaus der Bindegewebspapillen im oberen Stratum spinosum scheibenförmige Gestalt an. 2) Eine auffällige, organellenarme und elektronendurchlässige Zone tritt an der Peripherie der Zellen, besonders im Stratum basale und spinosum, auf. 3) Die Struktur der Desmosomen ändert sich im oberen Stratum granulosum, wobei die Distanz zwischen intradesmosomalen zytoplasmatischen Membranen vom Stratum basale zum Stratum granulosum graduell zunimmt. 4) Einfache und zusammengesetzte Keratohyalingranula treten auf, deren Form (sphärisch oder unregelmäßig, fleckig) zwischen verschiedenen Zellen stärker variiert als innerhalb einer Zelle. 5) Übergangszellen kommen vor. 6) Die vorwiegend kernlosen Zellen des Stratum corneum variieren in ihrer Homogenität und Dichte. Sie zeigen meist ein homogenes feingranuläres Keratinmuster, in dem Filamentprofile fehlen. Obwohl der Typ der Keratinisation unabhängig vom Typ der Keratohyalingranula zu sein scheint, unterscheidet sich das Epithel des normalen menschlichen harten Gaumens in der Differenzierung und im Typ der ausdifferenzierten Zellen von den entsprechenden Merkmalen der Epidermis.
    Notes: Summary The normal epithelium of the human hard palate is a keratinizing integument. There is considerable, mostly stereological, evidence that the differentiation and the type of keratinization in this epithelium differ from those of the epidermis. The objective of the present study was to correlate a systematic light- and electron microscopic description of this epithelium with stereological data, placing particular emphasis on differentiation phenomena. Twenty punch biopsies of 9 to 16 year-old females were studied. The observations show that (1) spinous cells are elongated or approximately isodiametrical in ridge regions and, above the level of the connective tissue papillae become disc-shaped in the upper stratum spinosum; (2) a prominent electron-lucent zone poor in organelles occurs at the cell periphery of basal and spinous cells; (3) the structure of desmosomes changes in the upper stratum granulosum with the distance between the intradesmosomal cytoplasmic membranes gradually increasing from the basal to the granular layer; (4) single and composite keratohyalin granules display a different shape (i.e., spherical or irregular, patch-like) varying to a higher degree among individual cells than within a single cell of the stratum granulosum; (5) transitional cells can be observed; (6) the predominantly anuclear cells of the stratum corneum vary in their homogeneity and density, most cornified cells revealing a fine-granular keratin pattern lacking the filament profiles common in the epidermis. Consequently, while the type of keratinization appears to be independent from the type of keratohyalin granules produced, the differentiation process and the type of the terminally differentiated cells of the hard-palate epithelium differ from those of the epidermis.
    Type of Medium: Electronic Resource
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