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  • Organic Chemistry  (3)
  • 74.70.Dg  (1)
  • Chemical Engineering  (1)
  • Marginal Contribution  (1)
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  • 1
    Digitale Medien
    Digitale Medien
    Superconductivity of thin films of lead, indium, and tin prepared in the presence of oxygen (1981)
    Springer
    Applied physics 25 (1981), S. 95-103 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 74.70.Dg ; 74.60.-w ; 73.60.Ka
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract We have studied the influence of oxygen on the superconducting properties of thin films of lead, indium and tin deposited on glass or sapphire substrates. In addition, the morphological microstructure was investigated by scanning electron microscopy. The film thickness was 1.0 μm, and the partial pressure of O2 during the film deposition was raised up to 1×10−4 Torr. In all three materials the development of a granular structure and a strong increase in the residual electric resistivity was observed due to the O2-treatment. Whereas in the Pb films no change of the critical temperature was found, the In films deposited on glass substrates showed a slight increase ofT c due to the oxygen. The strongest increase ofT c (up to 8%) was observed in the O2-treated Sn films. These results are discussed in terms of the McMillan theory. From our measurements of the critical current densityj c we conclude that edge pinning is dominant in the undoped films. All three materials showed a strong increase ofj c due to the O2-treatment which must be interpreted in terms of bulk pinning.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00901279
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  • 2
    Digitale Medien
    Digitale Medien
    The Shapley value for cooperative games under precedence constraints (1992)
    Springer
    International journal of game theory 21 (1992), S. 249-266 
    Details
    ISSN: 1432-1270
    Schlagwort(e): Cooperative Game ; Shapley Value ; Precedence Constraint ; Marginal Contribution
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik , Wirtschaftswissenschaften
    Notizen: Abstract Cooperative games are considered where only those coalitions of players are feasible that respect a given precedence structure on the set of players. Strengthening the classical symmetry axiom, we obtain three axioms that give rise to a unique Shapley value in this model. The Shapley value is seen to reflect the expected marginal contribution of a player to a feasible random coalition, which allows us to evaluate the Shapley value nondeterministically. We show that every exact algorithm for the Shapley value requires an exponential number of operations already in the classical case and that even restriction to simple games is #P-hard in general. Furthermore, we outline how the multi-choice cooperative games of Hsiao and Raghavan can be treated in our context, which leads to a Shapley value that does not depend on pre-assigned weights. Finally, the relationship between the Shapley value and the permission value of Gilles, Owen and van den Brink is discussed. Both refer to formally similar models of cooperative games but reflect complementary interpretations of the precedence constraints and thus give rise to fundamentally different solution concepts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01258278
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  • 3
    Digitale Medien
    Digitale Medien
    Sterospecific polymerization with alkali metal organic compounds (1962)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 2 (1962), S. 105-106 
    Details
    ISSN: 0032-3888
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pen.760020209
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  • 4
    Digitale Medien
    Digitale Medien
    Über die chemische Reaktion, die der Inhibierung der Polymerisation von Styrol durch Chinon zugrunde liegt (1941)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 158 (1941), S. 186-199 
    Details
    ISSN: 0021-8383
    Schlagwort(e): Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Zusätzliches Material: 3 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/prac.19411580116
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  • 5
    Digitale Medien
    Digitale Medien
    Über Brom-fluoranthene (1941)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 24 (1941), S. 100E 
    Details
    ISSN: 0018-019X
    Schlagwort(e): Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/hlca.19410240213
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  • 6
    Digitale Medien
    Digitale Medien
    Über das Vorkommen von Chrysen in Erde (1947)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 30 (1947), S. 1595-1599 
    Details
    ISSN: 0018-019X
    Schlagwort(e): Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/hlca.19470300624
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