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  • 1
    Electronic Resource
    Electronic Resource
    Novel polysiloxane formation process from dimethyldiethoxysilane in the presence of oxalic acid (1994)
    Springer
    Journal of sol gel science and technology 2 (1994), S. 153-156 
    Details
    ISSN: 1573-4846
    Keywords: dimethyldiethoxysilane ; oxalic acids ; polydimethylsiloxane ; reaction mechanism ; non-aqueous system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Polysiloxane formation in dimethyldiethoxysilane (DMDES)-ethyl alcohol (EtOH(D))-oxalic acid (OA) (DMDES:EtOH(D):OA=1:2:0.5) and DMDES-dimethylsulfoxide (DMSO)-OA (DMDES:DMSO:OA=1:2:0.5) systems was investigated by gas chromatography-mass spectrometry and 29Si-nuclear magnetic resonance. While the DMDES-EtOH(D)-OA system was homogeneous, the DMDES-DMSO-OA system consisted of two immiscible phases. In both systems, ethoxy-terminated linear oligomers ((EtO)Me2SiO(Me2SiO)nSiMe2(OEt); n=0–4, Et = C2H5, Me = CH3) and cyclic tetramer ((Me2SiO)4) were identified. The reaction mechanism for polysiloxane formation is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00486231
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Identification of the proto-oncogene c-fos in areas of periprosthetic osteolysis around loosened hip prostheses (2000)
    Springer
    Modern rheumatology 10 (2000), S. 225-229 
    Details
    ISSN: 1439-7609
    Keywords: Key words Proto-oncogene c-fos ; Interfacial membrane ; Osteolysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Expression of the proto-oncogene c-fos was investigated by in situ hybridization and a study of the immunohistochemistry of the interfacial membranes surrounding the femoral component of failed cementless total hip arthroplasty (THA). The values of the proto-oncogene c-fos gene and protein were high in these interfacial membranes. High expression of the c-fos gene and protein was observed in the macrophage-like cells and fibroblast-like cells. However, there was little expression in multinucleated giant cells. We demonstrated the significance of the proto-oncogene c-fos in interfacial membranes – the first report of c-fos in total joint replacement failure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s101650070007
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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