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  • 2000-2004
  • 1995-1999
  • 1970-1974  (6)
  • 1900-1904
  • 1971  (6)
Material
Years
  • 2000-2004
  • 1995-1999
  • 1970-1974  (6)
  • 1900-1904
Year
  • 1
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 4 (1971), S. 151-155 
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: An attachment to a horizontal goniometer for X-ray powder diffraction at temperatures up to about 2,000°C in a vacuum in the 10−9 torr range is described. Specimen heating is by direct contact to a resistance strip heater with provision for electron beam heating. Temperature measurement is by thermocouple or optical pyrometer. High-temperature parameter measurements on vanadium are presented as one of the examples of the capability of the apparatus.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 27 (1971), S. 1079-1080 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Karyologische und zytophotometrische Untersuchungen an PHA-stimulierten menschlichen Lymphozyten ergaben nach 76 h im DNS-Karyogramm einen weiteren Gipfel zwischen diploiden und tetraploiden Werten. Daraus wird geschlossen, dass bei Lymphozyten in der Kultur die DNS-Synthese in der S-Phase diskontinuierlich verläuft.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 23 (1971), S. 176-181 
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 23 (1971), S. 189-206 
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The clinical findings of 14 patients with myelocytic leukemia (paramyeloblasts, promyelocytes) are demonstrated. The following investigations were performed on the leukemic cells: light and electron microscopic cytology and cytochemistry, cytogenetic. The morphological and cytochemical findings are determined by the following factors: degree of differentiation of the leukemic cell; participation of erythrocyte-and thrombocyte-precursors in the malignant proliferation; morphological findings depending on the influence of malignancy or degeneration. The electron microscopic-cytochemical investigations demonstrate the synthesis, or “packing up” of acid phosphatase and peroxydase by participation of perinuclear space, endoplasmic reticulum, Golgi-field and azurophilic granules.
    Notes: Zusammenfassung Die klinischen Befunde von 14 Patienten mit unreifzelliger myeloischer Leukämie werden in knapper Form mitgeteilt. An den leukämischen Zellen (Myeloblasten, Promyelozyten) wurden folgende Untersuchungen durchgeführt: Licht-und elektronenmikroskopische Zytologie und Zytochemie, Zytogenetik. Morphologische und zytochemische Befunde werden durch folgende Faktoren bestimmt: Differenzierungsgrad der leukämischen Zelle; Mitbeteiligung anderer Zellreihen; maligne (und speziell leukämische) Entartung; degenerative Veränderungen der Zellen. Die elektronenmikroskopisch-zytochemischen Untersuchungen belegen die Bildung von saurer Phosphatase und Peroxydase unter Mitwirkung von perinukleärem Spalt, Ergastoplasma und Golgi-Apparat und schließlich die Lokalisation dieser Enzyme in den azurophilen Granula.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 22 (1971), S. 309-311 
    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: Pitting corrosion under hydrogen bubbles, adherent to the surface of zincInvestigation zinc alloys in acid solutions, it could be determined that under hydrogen bubbles which has adhered on the surface, annuker pitting corrosion took place. The types of corrosion attack were examined under a microscope during and after the corrosion test and in some cases under scanning electron microscope. The formation of the annular pittings can be interpreted as an impoverishment of hydrogen ions in the boundary layer between the hydrogen bubble and the surface of the specimen.
    Notes: Bei Korrosionsuntersuchungen an Zinklegierungen im sauren Korrosionsmedium konnte festgestellt werden, daß an Stellen anhaftender Wasserstoffblasen auf der Probenoberfläche ringförmiger Lochfraß entsteht. Diese Korrosionserscheinungen wurden während und nach dem Korrosionsversuch mit dem Lichtmikroskop und dem Rasterelektronenmikroskop untersucht. Das Entstehen dieser ringförmigen Lochfraßnarben kann durch die Verarmung von Wasserstoffionen in der Grenzschicht zwischen Wasserstoffblase und Probenoberfläche erklärt werden.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 22 (1971), S. 125-134 
    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: Influence on zinc corrosion by metals being present as cations in the corrosive mediumAddition of cations of nobler metals may accelerate or inhibit corrosion of zinc in acid media, depending on the hydrogen overvoltage of the metal deposits being formed. In the case of low hydrogen overvoltage corrosion is accelerated. This accelerating effect decreases in the following order: As-III, Sb-III, Ni-II, Cu-II, Co-II, Fe-II, Cd-II, Ga-III, In-III, Pb-II, Tl-I and Hg-II. This fact also goes to show that Pb contents in the zinc or preliminary amalgamation reduce the influecne of the deposits. On the other hand, Cd contents in zinc have a negligible effect and Fe contents tend to surprisingly accelerate corrosion.
    Notes: Zusatz von Kationen edlerer, Metalle kann die Korrosion von Zn in sauren Medien beschleunigen oder hemmen, je nachdem, ob die entstehenden Metallniederschläge niedrige bzw. hohe Wasserstoffüberspannung aufweisen: im ersten Falle wird die Korrosion beschleunigt. Die korrosionsfördernde Wirkung nimmt dabei in der folgenden Reihe ab: As-III, Sb-III, Ni-II, Cu-II, Co-II, Fe-II, Cd-II, Ga-III, In-III, Pb-II, Tl-I und Hg-II. Daraus ist auch zu erklären, daß Pb-Gehalte im Zn sowie vorheriges Amalgamieren den Einfluß der Niederschläge verringern. Cd-Gehalte im Zn wirken sich hingegen kaum aus und Fe führt überraschend zu starker Zunahme der Korrosion.
    Additional Material: 19 Ill.
    Type of Medium: Electronic Resource
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