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  • 1
    Electronic Resource
    Electronic Resource
    Immunohistochemical detection of Fas antigen in oral epithelia (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral pathology & medicine 26 (1997), S. 0 
    Details
    ISSN: 1600-0714
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A monospecific and high liter polyclonal antibody, designated as Fas D, raised against synthetic polypeptides selected from a part of the human Fas antigen (aa 104-514), was used to identify the Fas antigen in human oral epithelia in normal and pathological states. The human gingival proteins had been extracted and analysed by an ABC (avidin-biotin complex) immunoblotting technique. The antibody interacted with a single band in gingival proteins with an estimated molecular weight of 35, 000, which is in good agreement with that calculated from amino acid sequences of the human Fas antigen. Using an indirect immunohistochemical method, the antibody localized an the stratum spinosum and the basal part of the stratum corneum of normal human gingiva. Specimens obtained from patients with odontogenic keratocysts, leukoplakia, lichen planus, and squamous cell carcinoma were also stained with the antibody. The pattern of the Fas antigen distribution in oral stratified squamous epithelia was, with some overlapping, characteristic for each disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0714.1997.tb00022.x
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  • 2
    Electronic Resource
    Electronic Resource
    Free energy of semiflexible polymers and structure of interfaces (1999)
    Springer
    The European physical journal 7 (1999), S. 573-583 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 61.25.Hq Macromolecular and polymer solutions; polymer melts; swelling - 61.30.Cz Theory and models of liquid crystal structure - 64.70.Md Transitions in liquid crystals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The free energy of semiflexible polymers is calculated as a functional of the compositional scalar order parameter and the orientational order parameter of second-rank tensor Sij on the basis of a microscopic model of wormlike chains with variable segment lengths. We use a density functional theory and a gradient expansion to evaluate the entropic part of the free energy, which is given in a power series of .The interaction term of the free energy is derived with a random phase approximation. For the rigid rod limit, the nematic-isotropic transition point is given by , N and w being the degree of polymerization and the anisotropic interaction parameter, respectively, and the degree of ordering at the transition point is 0.33448. We also find that the contour length of polymer chains becomes larger in a nematic phase than in an isotropic phase. Interface profiles are obtained numerically for some typical cases. In the neighborhood of isotropic-isotropic interfaces, polymer chains tend to align parallel to the interface on the polymer-rich side and perpendicular on the poor side. When an isotropic region and a nematic region coexist, orientational order parallel to the interface is preferred in the nematic region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510050650
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of hydrodynamic flow on kinetics of nematic-isotropic transition in liquid crystals (1998)
    Springer
    The European physical journal 1 (1998), S. 173-177 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 64.70.MdTransitions in liquid crystals - 64.60.CnOrder-disorder transformations; statistical mechanics of model systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We investigate kinetics of nematic-isotropic transition by solving the hydrodynamic equations for the nematic tensor order parameter and the fluid velocity in two space dimension (x-y plane). Numerical results indicate that nematic directors tend to align parallel to the x-y plane when hydrodynamic flow is incorporated. Late stage growth exponents, for the correlation length and for the number of topological defects, are not significantly altered by hydrodynamic flow. However, in contrast to the case without flow, the relation holds well, which may indicate the validity of dynamical scaling for the case with hydrodynamic flow.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510050168
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    Paper (German National Licenses)
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