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  • Articles: DFG German National Licenses  (8)
  • 2000-2004  (4)
  • 1985-1989  (4)
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  • Articles: DFG German National Licenses  (8)
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Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Fast cathode processes in vacuum discharge development (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 4899-4904 
    Details
    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
    URL: http://dx.doi.org/10.1063/1.340430
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Structure and luminescence of annealed nanoparticles of ZnS:Mn (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 4985-4993 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Structural and light-emitting properties of nanoparticles of ZnS:Mn annealed in vacuum at temperatures up to 525 °C are presented. Annealing the 3.5 nm particles at temperatures up to 350 °C caused growth of some particles without substantial change in the luminescence or ZnS lattice. After annealing at 400–525 °C, the high-temperature wurtzite phase of ZnS appeared, accompanied by an increase of the average particle diameter to approximately 100 nm and a rearrangement of the Mn ions. Dramatic increase in cathodoluminescence emission was also observed and is compared to the structural information obtained from electron microscopy, x-ray diffraction, x-ray absorption fine structure, and electron paramagnetic resonance measurements. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1314326
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Airway management – a current training problem? (2000)
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 55 (2000), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2044.2000.01425-43.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Auxin action: the search for the receptor (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 8 (1985), S. 0 
    Details
    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
    URL: http://dx.doi.org/10.1111/j.1365-3040.1985.tb01410.x
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    The use of patristic homilies in the Old English Martyrology (1985)
    Cambridge : Cambridge University Press
    Anglo-Saxon England 14 (1985), S. 107-128 
    Details
    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
    URL: http://dx.doi.org/10.1017/S0263675100001307
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Rejuvenating the Cabinet: the Record of Post-war British Prime Ministers Compared (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Political studies 34 (1986), S. 0 
    Details
    ISSN: 1467-9248
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Political Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-9248.1986.tb01618.x
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Growth induced magnetic and chemical anisotropy in CoPt3 alloy films (2001)
    Chester : International Union of Crystallography (IUCr)
    Journal of synchrotron radiation 8 (2001), S. 880-882 
    Details
    ISSN: 1600-5775
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: We report the results of polarized Co $K$ EXAFS experiments on a series of CoPt3 films grown by molecular beam epitaxy on (100) MgO single crystal substrates over a range of temperatures from 473 K to 1073 K. These samples exhibit substantial perpendicular magnetic anisotropy that is strongly dependent on the substrate growth temperature Tg. We measure a preference for in-plane Co-Co pairs that is correlated with the magnetic properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0909049501000309
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Imaging of compressive vertebral haemangiomas (2000)
    Springer
    European radiology 10 (2000), S. 997-1002 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Hemangioma – Vertebra – Compression – Spine – Tumor – Imaging – CT – MR imaging – Radiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Compressive vertebral haemangiomas (VHs) are rare. Correct preoperative diagnosis is useful both for operative planning (since compressive VHs are extremely vascular lesions) and to allow preoperative embolisation. Numerous radiological signs for VHs have been described, but compressive VHs frequently have atypical features. In particular, magnetic resonance features are not well established. We present imaging features in three cases of compressive VH and review the imaging findings in an additional 106 previously published cases. Findings were typical in 52 of 80 plain film (65 %), 33 of 41 computed tomography (80 %) and 13 of 25 magnetic resonance examinations (52 %). The prevalence of previously described imaging features is reported. Awareness of the range of magnetic resonance features is important since this is frequently the initial investigation in patients presenting with symptoms of neural compression. Since computed tomography is typical in 80 % of cases, this is a useful confirmatory test if magnetic resonance features are suspicious but not diagnostic of compressive VH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300051051
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    Paper (German National Licenses)
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