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  • 1
    Electronic Resource
    Electronic Resource
    Stewart-Treves syndrome: an histogenetic (ultrastructural and immunohistological) study (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cutaneous pathology 13 (1986), S. 0 
    Details
    ISSN: 1600-0560
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: One case of the so-called „Stewart-Treves syndrome” (STS), appearing on a lymphoedomatous arm complicating radical mastectomy for brest cancer, was characterized electronmicroscopically and immunohistologically, in order to elucidate its disputed (epithelial vs endothelial) histogenesis. Epithelial and endothelial differentiation markers used comprised: antibodies against keratin, vimentin, factor VIII-related antigen (F VIII-RA), HLA-DR antigens and the lectin Ulex europeaus agglutinin 1 (UEA I). At the ultrastructural level, neoplastic cells were found to contain typical Weibel-Palade bodies, whereas by immunohistological techniques they proved to be keratin −negative/vimentin+, F VIII-RA +, UEAI+, HLA-DR+. These results rule out a possible epithelial differentiation and strongly favour an endothelial one for STS.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0560.1986.tb00458.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Photosynthetic gas exchange of the mangrove, Rhizophora stylosa Griff., in its natural environment (1985)
    Springer
    Oecologia 65 (1985), S. 449-455 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Photosynthetic gas exchange properties of leaves of the mangrove, Rhizophora stylosa Griff., were investigated in order to assess its productivity and gain some insight into the constraints set upon it by the saline habitat. Mature trees of this dominant species were studied in their natural, tidal-forest environment at Hinchinbrook Is., North Queensland for two periods during the dry season. Individual leaves were enclosed in a chamber wherein environmental conditions were varied. CO2 assimilation, transpiration and environmental parameters were monitored during daylight hours by instrumentation housed in a mobile laboratory mounted on a barge. Analysis of the daily course of leaf gas exchange revealed a CO2 assimilation capacity comparable with that of many glycophytic trees. Photosynthesis was strongly influenced by leaf temperature as well as photon flux density. There was a strong and steadily increasing inhibition of gas exchange as leaf temperatures and, consequently, the leaf to air VPD increased. CO2 assimilation rates and leaf conductances to water vapour diffusion were strongly correlated, resulting in nearly constant internal CO2 concentrations in the leaves under the full range of conditions. The effect of leaf orientation in minimizing the leaf-to-air temperature difference was striking. The close coordination between stomatal conductance and CO2 assimilation rate in this mangrove results in high water use efficiency. This sparing use of water may be an important factor underlying the high salinity tolerance of mangroves.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00378922
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Functional group modification in a non-ionic extracellular schizophyllan polysaccharide (1986)
    Springer
    Polymer bulletin 15 (1986), S. 1-5 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Chemical modification of schizophyllan, a neutral fungal polysaccharide which assumes a triple helical structure in aqueous solution,was performed at room temperature in DMSO in the presence of triethylamine and dimethyl-4 aminopyridine. No molecular weight degradation results from the modification.The modified polysaccharide which contains 2.3 phtalic acid groups per repeat unit behaves as a polyelectrolyte in aqueous solution. Due to the presence of charged acidic groups a single chain conformation is evidenced in both DMSO and aqueous solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263484
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  • 4
    Electronic Resource
    Electronic Resource
    Familial correlations of variables from the craniofacial complex in a Venezuelan isolate of African origin (1986)
    Springer
    International journal of anthropology 1 (1986), S. 205-213 
    Details
    ISSN: 1824-3096
    Keywords: Familial aggregation ; Craniofacial complex ; Venezuelan Isolate ; African Origin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Familial aggregation for 33 different variables from the craniofacial complex was estimated through intraclass correlation coefficients for four different relationships: parent-offspring paris, sibs, cousins and unrelated pairs. The population chosen for the study was La Sabana, D.F., a Venezuelan isolate of Negroid origin. The general tendency observed among the different correlations was as anticipated: sibs show higher correlations than cousins and these were higher than for unrelated pairs. Parent-offspring correlations were lower than expected. The significant correlations observed among sibs for 17 of the variables indicate aggregation due to genetic and/or common environmental factors. On the other hand, little genetic determination was detected for sella-C point distance or for upper dental arch depth both of which show intraclass sib correlations ≤0.1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02442034
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    Paper (German National Licenses)
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