Die Zukunft von Information und Kommunikation

Ohne Zusammenfassung Kurzfassung eines Vortrags von Vors.-Dir. Dipl.-Ing. Eduard Uhl anl?sslich einer Siemens-Kundentagung in Alphach.     

Buchbesprechungen

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Bahntechnik II: Innovative Maßnahmen für das Bahnstromnetz Die ÖBB-Infrastruktur-Garant für eine professionelle Betriebsabwicklung

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Heterogeneous catalysis in ionic liquids: The heck reaction of bromobenzene with styrene over palladium supported on mesoporous carbon

Tributylhexylammonium bistriflamide [(C₄H₉)(C₆H₁₃)N][(CF₃SO₂)₂N], an ionic liquid, was used as a solvent for the Heck reaction of bromobenzene with styrene in the presence of Pd deposited onto a mesoporous carbon support. It was found that dibutylamine used as a basic reagent to scavenge hydrogen bromide results in higher conversions of the reactants and higher yields of stilbene than sodium acetate. It was shown that the IL is fully recoverable after use in the catalytic reaction.     

EPMCC 2001 — Forum der Telekommunikationspioniere des 21. Jahrhunderts

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The concept of elementary excitations in classical statistical mechanics

Exact representations of the generating functional of one-component classical systems with a central interatomic interaction potential are obtained in terms of the functional integrals over auxiliary fields determined in the wavevector space. It is proved that the problem of calculating a classical partition function for a system of particles with an arbitrary interatomic interaction potential is equivalent to the problem of calculating a statistical integral for a system of interacting oscillators with a temperature-dependent Hamiltonian.     

Willibald Riedler emeritiert — Ein Rückblick auf das Leben und Wirken eines großen Österreichers

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