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  • 1
    Electronic Resource
    Electronic Resource
    Resonant Rutherford backscattering. Study ofa-axis YBaCuO films with very high crystallinity (1995)
    Springer
    Journal of superconductivity 8 (1995), S. 759-764 
    Details
    ISSN: 1572-9605
    Keywords: a-axis YBCO ; Rutherford backscattering ; sputtered films
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Hybrid sputtering and the conventional dc-template sputtering methods were used to deposit highly crystallinea-axis films. The oxygen contents and disorder of the films were measured by the resonant Rutherford backscattering. The oxygen content of the films deposited by the hybrid sputtering depend on the deposition temperature. Films deposited at a low temperature have low oxygen content. The poor superconducting properties of these films may be due to the oxygen deficiency. The stoichiometry of the films deposited by the dc-template sputtering method was found to depend on the microstructure of the template. The disorder at the Ba and O sublattices of these highly crystallinea-axis films are uncorrelated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00727500
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Differences in hemostasis among sclerosing agents in endoscopic injection sclerotherapy (1996)
    Springer
    Digestive diseases and sciences 41 (1996), S. 562-570 
    Details
    ISSN: 1573-2568
    Keywords: sclerosant ; thrombogenesis ; hemostasis ; in vivo microscopy ; endoscopic injection sclerotherapy ; vascular permeability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Endoscopic injection sclerotherapy is useful in stopping bleeding from esophageal varices. We compared thein vivo effects of sclerosants on thrombogenesis, hemostasis, and endothelial injury. We injected aethoxysclerol (AS) or ethanolamine oleate (EO) into the small veins of the rat intestine. The maximum thrombogenic index with AS was 30.7 and with EO was 9.2. The venous flow stopped sooner with EO than with AS. The thrombi caused by EO were mixed with red blood cells. Heparin pretreatment decreased the thrombogenic index with AS by 96.7%, but not that with EO. The area of the fluorescein-albumin conjugate that permeated from veins with AS was larger than that with EO. The fluorescent intensity with AS was lower than that with EO. We thus concluded that: (1) the size of thrombi is not necessarily proportional to the hemostatic efficacy; (2) changes in a patient's coagulation may affect the potential of sclerosants; (3) the excellent hemostatic efficacy of EO is based on localized injury to the endothelium and the involvement of red blood cells aggregation; and (4)in vivo microscopy is useful in determining the rational selection of sclerosants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02282342
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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