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  • 1995-1999  (2)
  • 1965-1969  (1)
  • Chemistry  (2)
  • 03.65.Pm  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Relativistic wave equation for a boson-fermion system (1995)
    Springer
    The European physical journal 353 (1995), S. 79-85 
    Details
    ISSN: 1434-601X
    Keywords: 03.65.Ca ; 03.65.Pm ; 11.10.St ; 36.10.Gv
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present a two-body relativistic wave equation for a system composed of a boson and a fermion. One-body equations such as the Dirac and the Klein-Gordon equations are often used as an approximate equation for relativistic two-body systems. However, when the masses of two particles are not very different, the use of one-body equations comes into question. We use the Feshbach-Villars formalism for the boson so that the wave equation can be given in the form of an eigenvalue equation for the Hamiltonian. Differences between our equation and the one-body equations are examined and illustrated in a numerical example of a two-body system with scalar and vector potentials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01297730
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Selective adsorption of bilirubin by macroporous poly(glycidyl methacrylate-co-divinylbenzene) beads (1996)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 237 (1996), S. 143-161 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Makroporöse Glycidylmethacrylat(GMA)-Divinylbenzol(DVB)-Copolymerstränge wurden synthetisiert, und die Adsorption von Bilirubin, Albumin und anderen Serumkomponenten wurde untersucht. Die aus DVB/GMA im Gewichtsverhältnis 75/25 aufgebauten Stränge bieten eine hervorragende Bilirubin-Adsorptionsfähigkeit. Wenn die Oberfläche der Stränge vorher mit Albumin beschichtet wurde, wird selektive Adsorption von Bilirubin erzielt, und die Adsorption von Albumin im Serum wird unterdrückt. Außerdem wurde durch Vernetzung des beschichteten Albumins mit Glutaraldehyd die hervorragende Bilirubin-Adsorptionsfähigkeit bewahrt und eine zusätzliche Adsorption von Albumin aus dem Serum erzielt.
    Notes: Macroporous glycidyl methacrylate (GMA)-divinylbenzene (DVB) copolymer beads have been synthesized and the adsorption of bilirubin, albumin and other serum components were studied. The beads composed of DVB/GMA in the weight ratio of 75/25 provide an excellent bilirubin adsorption ability. When the surface of the beads was previously coated with albumin, discriminating adsorption of the bilirubin in the serum was attained and the adsorption of albumin was depressed. In addition, when the coated albumin was crosslinked with glutaraldehyde, the excellent bilirubin adsorption ability was maintained, however, an adsorption of albumin from the serum occurred.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1996.052370108
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Cationic polymerization α,β-disubstituted olefins. Part I. Cationic copolymerization of β-methylstyrenes (1965)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 3 (1965), S. 2567-2578 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Steric and electronic effects of the β-methyl group on monomer reactivity have been studied by copolymerization of styrenes and β-methylstyrenes. Steric hindrance of the β-methyl group in the transition state of homopolymerization is so great that the rate of the propagation reaction is considered to be depressed by as much as 1/10-1/20 of the corresponding styrene derivatives. In contrast to this, steric hindrance of the β-methyl group in cross propagation reactions with styrene is found to be very small. The monomer reactivity itself of β-methylstyrenes is a little lower than that of corresponding styrenes. This lowered reactivity of β-methylstyrenes is considered to be due to the electronic effect of the β-methyl group.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1965.100030714
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    Paper (German National Licenses)
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