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  • 1
    Electronic Resource
    Electronic Resource
    Radical polymerization and copolymerization behavior of 1-cyanoethanoyl-4-acryloylthiosemicarbzide (2000)
    Springer
    Journal of polymer research 7 (2000), S. 229-235 
    Details
    ISSN: 1572-8935
    Keywords: Functional monomers ; Polymerization ; Copolymerization ; Kinetic studies ; Reactivity ratios
    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: Abstract 1-Cyanoethanoyl-4-acryloylthiosemicarbazide (CEATS) was synthesized for the first time as a new chelating monomer. Its structure was confirmed by both elemental and spectral analyses. Radical polymerization and copolymerization of CEATS was been carried out in dimethylformamide (DMF) in the presence of azobisisobutyronitrile (AIBN) as an initiator. Kinetic studies for the polymerization behavior of CEATS were performed. The complex formation of the CEATS monomer and polymer (PCEATS) with Cu II cation was investigated and its stability constant determined. The rate of copolymerization of CEATS with some conventional monomers, namely vinyl acetate, methyl methacrylate and acrylonitrile, was measured as a function of the mole fraction of the monomers. The reactivity ratios (r1, r2) for the various copolymer systems investigated together with the Q and e values of the CEATS monomer were determined. Moreover, the thermal gravimetric analysis of the prepared polymers and their copolymers with acrylonitrile were also studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10965-006-0124-x
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  • 2
    Electronic Resource
    Electronic Resource
    Transport and Reaction at Endothelial Plasmalemma: Distinguishing Intra- From Extracellular Events (2000)
    Springer
    Annals of biomedical engineering 28 (2000), S. 1010-1018 
    Details
    ISSN: 1573-9686
    Keywords: Oxidation reduction ; Methylene blue ; Toluidine blue O ; Ubiquinone ; Mathematical modeling ; Multiple indicator dilution ; Lung cell culture ; Physiome ; Hyperoxia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract The pulmonary endothelium is a chemical reactor that modifies blood composition in several ways, including reduction of the oxidized forms of certain redox active substances in the blood. The physiological functions of the transplasma membrane electron transport systems involved in the latter are not fully understood, but an argument is made that they are involved in antioxidant defense. In addition, the experimental approaches used to characterize the process, including studies at whole organ, cell culture, and subcellular levels, along with the use of mathematical modeling, may be representative of the physiome concept wherein a goal is the integration of information obtained at all levels of biological organization. In this article, separation of intra- and extracellular events involved in the disposition of redox active probes within the lungs is the particular example. © 2000 Biomedical Engineering Society. PAC00: 8716Uv, 8716Dg, 8715Rn, 8719Uv
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1114/1.1308490
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