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  • 1985-1989  (4)
  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 4899-4904 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Results of high-speed streak photography of the initial stages of a discharge in technical vacuum are presented. The roles of electrode material, electrode spacing, gas pressure, and gas composition were investigated as well as the influence of cathode temperature. The results show that the visible light in the initial stages of the discharge oscillates in intensity with a period of between 4 and 5 ns. The period is little changed by any of the parameters studied. The results are examined in the light of three models for the process; explosive emission, oscillations in layers of solid adsorbate on the cathode, and oscillations in the space charges in the gap. The results definitely exclude explosive emission and do not fit well with the requirements of oscillations in cathode surface layers. It is concluded that space-charge oscillations are responsible for observed oscillations in visible light intensity and gap current.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Political studies 34 (1986), S. 0 
    ISSN: 1467-9248
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Political Science
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Cambridge : Cambridge University Press
    Anglo-Saxon England 14 (1985), S. 107-128 
    ISSN: 0263-6751
    Source: Cambridge Journals Digital Archives
    Topics: English, American Studies , Archaeology
    Notes: The earlier editors of the Old English Martyrology (OEM), T. O. Cockayne and George Herzfeld, recognized that some notices, or phrases within notices, drew on homilies by named patristic writers. Cockayne identified two entries which closely echoed sentences from two of Gregory's Homiliae in Evangelia, for Emiliana (5 January) from Homilia xxxviii.15 and for Cassius (29 June) from Homilia xxxvii.9. Herzfeld added two more, for Processus and Martinianus (2 July) from Homilia xxxii.7 and for Felicitas (23 November) from Homilia iii.3. Also, guided by Ruinart, Herzfeld identified a passage from Augustine's Sermo cccix.4 within the entry for Cyprian of Carthage (14 September). Herzfeld, by oversight, had actually ascribed his Latin quotation (cited in the Addenda) to Fulgentius of Ruspe's Sermo vi, although Fulgentius's sermon probably did influence one other phrase in the notice.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 8 (1985), S. 0 
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract. The molecular specificity of the substances which have auxin activity implies the existence of specific receptors. There have been many efforts to identify and isolate these receptors on the assumption that they should bind auxins with affinities coordinate to their activities in bioassays. However, the known complexity of auxin uptake and metabolism make this assumption seriously deficient. Although several such binding sites have, in fact, been identified, proof of a connection between these sites and auxin action has been lacking. Definite proof would include a requirement that the site be reconstituted, together with the appropriate macro-molecular machinery, to construct a model of an auxin response. At the moment, our ignorance of the biochemistry and molecular biology of auxin growth responses makes such a proof difficult. However, two avenues of research promise to accelerate the rate of progress. The increasingly potent tools of molecular biology should soon allow the dissection of auxin-regulated gene expression, while improved knowledge of plasma membrane proton pumps and the mechanism of cell wall biosynthesis should produce, in parallel, an understanding of the auxin regulation of acid growth.
    Type of Medium: Electronic Resource
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