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  • 1990-1994  (5)
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Material
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Year
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  • 1
    Electronic Resource
    Electronic Resource
    Light and ultrastructural studies of human chronic periapical lesions (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral pathology & medicine 19 (1990), S. 0 
    Details
    ISSN: 1600-0714
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Forty clinically chronic periapical granulomas and cysts and their corresponding teeth were removed. Diagnosis was by light and transmission electron microscopy. Ultrastructural features of the root surfaces concerned and the corresponding soft tissue were detected by scanning electron microscopy. Chronic periapical inflammation had caused root resorption which affected the cementum and/or the dentin. There were no ultrastructural differences between granuloma and cyst-induced root resorption. Resorption lacunae were devoid of epithelial and connective tissue attachment. However, root surface exposed to granulomas and cysts also indicated spontanous cementum repair. Moreover, at their periphery, cellular debris, cells defined as fibroblasts, and cell projections and fibrils could be seen which were continuations of the periodontal ligament.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0714.1990.tb00828.x
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Comparison of a commercial enzyme immunoassay and an immunoblot technique for detection of immunoglobulin A antibodies toToxoplasma gondii (1993)
    Springer
    European journal of clinical microbiology & infectious diseases 12 (1993), S. 636-639 
    Details
    ISSN: 1435-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A commercial enzyme immunoassay (Platelia-Toxo IgA) and an immunoblot technique were compared with regard to their ability to detect IgA antibodies to the major surface protein P30(SAG1) ofToxoplasma gondii in 105 serum samples from patients with suspected or proven acquired toxoplasmosis. Comparison of the IgA-EIA with the immunoblot technique showed a concordance of 81.0 %, with a sensitivity of 92.6 % and a specificity of 78.4 %. Due to its high sensitivity the IgA-EIA might detect IgA antibodies againstToxoplasma gondii at an early stage of infection, although excessive sensitivity could lead to detection of IgA antibodies for an extended period of time following the onset of infection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01973647
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Particle evaporation from hot nuclei withA ≦85 mainly prior to scission (1992)
    Springer
    The European physical journal 344 (1992), S. 259-267 
    Details
    ISSN: 1434-601X
    Keywords: 25.70.Gh ; 25.70.Jj ; 25.85.Ge
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report on measurements of fusion-fission fragments and evaporation residues from the reaction58Ni +27Al at 835 MeV incident energy leading to compound nucleiA ≦ 85 with high excitation energies. In the case of fission the mass dependence of the velocity widths of separated fragments indicate that the evaporation of light particles predominantly occurs from the composite nucleus prior to scission. The fraction evaporated from the fully separated fragments after scission can be estimated to approximately 20%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01303019
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Limiting excitation energies in fusion evaporation reactions (1993)
    Springer
    The European physical journal 347 (1993), S. 135-143 
    Details
    ISSN: 1434-601X
    Keywords: 25.70.Gh ; 25.70.Jj ; 25.70.Mn
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The mass dependence of the critical excitation energy above which a hot nucleus does not decay any more by particle evaporation, has been studied in the mass range 75≦A≦130. The experimental values of the critical excitation energy have been obtained by means of a new integral method based on the analysis of the widths of the evaporation residue mass distributions as a function of the residue velocity. The obtained mass dependence appears to be stronger than expected by various models and a predicted dependence on theZ/A ratio of the decaying nucleus seems to be confirmed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01284680
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Coexistence of heterogeneous populations ofToxoplasma gondii parasites within parasitophorous vacuoles of murine macrophages as revealed by a bradyzoite-specific monoclonal antibody (1993)
    Springer
    Parasitology research 79 (1993), S. 485-487 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The expression of bradyzoite-specific antigens (Bsa) ofToxoplasma gondii was studied in murine bonemarrow-derived macrophages that had previously been infected with tachyzoites. Growth conditions that allowed only restricted replication ofToxoplasma gondii resulted in heterogeneous populations; (1) Bsa-positive and Bsa-negative parasites could be observed within one parasitophorous vacuole (heterogeneous vacuole community), and (2) homogeneous Bsa-positive and homogeneous Bsa-negative vacuole communities coexisted within one macrophage host cell. These observations suggest that stage conversion does not seem to be a synchromous event for a vacuole community.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00931588
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    Paper (German National Licenses)
    Fulltext
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