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A phase equilibrium study of the systems dimethyldichlorosilane with 2.4-lutidine and 2.6-lutidine is presented with evidence for the existence of the incongruently melting compounds 2.6-lutidine · Me2SiCl2, (2.6-lutidine)2 · Me2SiCl2 and the congruently melting compound 2.4-lutidine · Me2SiCl2.
A thermodynamic interpretation of the liquidus curves of some methyltrichloro-respectively dimethyldichlorosilane/lutidine-systems is given. Based on certain approximations it was possible to fit thermodynamic functions to the experimental results to obtain the excess datas of binary systems. A comparison between the models of Redlich-Kister, Wilson and the NRTL-formalism for the free excess enthalpy of binary mixtures is given.
Der Beitrag des Medizinhistorikers U. Benzenhöfer analysiert den "Paracelsus"-Film des Regisseurs Georg W. Pabst aus dem Jahr 1943. Laut Drehbuch (Kurt Heuser) sollte Paracelsus als "deutscher Arzt" charakterisiert werden. Der Regisseur versuchte jedoch aller Wahrscheinlichkeit nach, Elemente regimekritischer Gesinnung im Film unterzubringen.