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  • Articles: DFG German National Licenses  (13)
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  • Articles: DFG German National Licenses  (13)
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Keywords
  • 11
    Electronic Resource
    Electronic Resource
    Evidence of dissolved ions and ion pairs in dilute poly (propylene oxide)-salt solutions
    Amsterdam : Elsevier
    Solid State Ionics 60 (1993), S. 47-53 
    Details
    ISSN: 0167-2738
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0167-2738(93)90273-6
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 12
    Electronic Resource
    Electronic Resource
    Biologic markers, cellular differentiation, and metastatic head and neck cancer (1993)
    Springer
    European archives of oto-rhino-laryngology and head & neck 250 (1993), S. 424-428 
    Details
    ISSN: 1434-4726
    Keywords: Head and neck cancer ; Metastases ; Prognosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The plateau in survival rates from head and neck cancer as well as the increasing incidence of disease among various populations demands the need for new perspectives in head and neck oncology. In pursuit of that goal, investigators have been developing improved biologic markers for metastatic risk of head and neck cancer. Such markers can be placed into categorical groupings, of which markers for cellular differentiation may be the most relevant. Among the growth factors relevant to head and neck cancer, epidermal growth factor and its receptor have received the most attention. Those tumors with unregulated growth factor control tend towards a more dedifferentiated state. Additionally, the degree of cellular differentiation and resulting risk of metastases may be predetermined in an individual through constitutively expressed susceptibility genes. Polymorphisms of the L-myc oncogene identified within peripheral blood lymphocytes may represent such a marker. Certain polymorphisms of this gene will identify individuals likely to express dedifferentiated head and neck cancer. Finally, the expression of cell-surface differentiation antigens may govern the capacity of cell-mediated host immune systems to control metastatic growth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00181082
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    Paper (German National Licenses)
    Fulltext
  • 13
    Electronic Resource
    Electronic Resource
    Nanoheterogeneity in PEO/PMMA blends probed by 129Xe-NMR (1997)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 35 (1997), S. 2681-2688 
    Details
    ISSN: 0887-6266
    Keywords: NMR ; 129Xe ; blends ; PEO ; PMMA ; Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Xenon has been used as a structural probe of solid poly(ethylene oxide)/atactic poly(methyl methacrylate) (PEO/PMMA) blends of concentrations 10/90 to 75/25. 129Xe-NMR spectra at 293 K show significant changes in line width and chemical shift as the blend composition is varied. The 129Xe spectra are interpreted in terms of exchange between amorphous single-phase PEO and PMMA domains. It is shown that a simple two-site exchange model can be used to calculate spectra which fit the experimental data over the whole concentration range. Xe exchange between blend subregions is demonstrated also by a two-dimensional NMR experiment. The PEO/PMMA results are compared to previously published poly(vinylidene fluoride)/PMMA 129Xe spectra. © 1997 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 35: 2681-2688, 1997
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
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