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  • Articles: DFG German National Licenses  (3)
  • 1985-1989  (3)
  • 1987  (3)
Source
  • Articles: DFG German National Licenses  (3)
Material
Years
  • 1985-1989  (3)
Year
  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 2381-2386 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Positive temperature coefficient resistors are evaluated in the self-heating mode as pulse generators and as opening switches in inductive storage pulse power supplies. Results from both carbon-filled polymer devices, as well as from barium-titanate-based devices, are shown. Theoretical switched powers of close to a 1/4 MW are calculated for honeycomb-shaped BaTiO3 positive temperature coefficient resistors. Switching times in the millisecond range are achieved. Pulse duration varies with ambient temperature, but this can be counteracted by using capacitative triggering. Surface flashover was one of the critical failure mechanisms. The results point towards further improved device designs.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral pathology & medicine 16 (1987), S. 0 
    ISSN: 1600-0714
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Nodular fasciitis is a benign reactive fibroblastic proliferation which usually arises from the superficial or deep fascia of the extremities and trunk. In 1981 a distinct variant, intravascular fasciitis (IVF), was reported which possessed the same clinical and histological features of more ordinary forms of nodular fasciitis but, in addition, had a striking involvement of associated arteries and/or veins. A case of intraoral IVF is presented and its clinical and histologic features are compared with those of IVF found elsewhere in the body. A brief discussion of etiology and differential diagnostic considerations is also included.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1434-9949
    Keywords: Antiphospholipid antibodies ; VDRL, Lupus Anticoagulant ; Systemic Lupus Erythematosus ; Syphilis ; Thrombosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Antiphospholipid antibodies have been determined in two groups of 48 sera from patients with systemic lupus erythematosus (SLE) and syphilis. Using an ELISA, IgG anticardiolipin (CL), antiphosphatidyl serine (PS) and antiphosphatidyl ethanolamine (PEA), antibodies have been detected with the same frequency in both groups of patients. Titres of antiphosphatidyl serine (PS) (p〈0.005) and PEA antibodies (p〈0.05) were significantly higher in the syphilitic sera compared to the SLE sera. Anticardiolipin binding activity of both groups of sera could be inhibited by preincubation with phosphatidic acid, phosphatidyl serine, phosphatidyl glycerol and cardiolipin antigens, but the inhibiting ratio of phosphatidyl antigen was significantly higher (p〈0.01) in the SLE group. These data suggest that anticardiolipin auto-antibodies present in SLE sera are very similar to the “reagins” or antibodies to cardiolipin seen in syphilitic sera. IgG anticardiolipin antibodies may be an epiphenomenon and are probably not implicated in the pathogenesis of the thrombotic diathesis seen preferentially in some patients with SLE.
    Type of Medium: Electronic Resource
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