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Journals and Conferences
Little is known about the relationship between the function and structure of materials. Materials (solids with a function) are complex entities and a better knowledge of the parameters that contribute to function is desirable. Here, we present modeling approaches that correlate chemical composition with function of heterogeneous catalysts. The complete… (More)
Medication of trout and carps with chloramphenicol and sulfadimidine results in tissue residues which best fit by a biexponential decay curve. The analysis of residues does not reveal any systematic deviations of the data from the model. On the basis of this model half lives for the fast and slow drug elimination phases can be estimated. For the assessment… (More)
The heterogeneously catalyzed gas-phase oxidation of HCl to Cl(2) offers an energy-efficient and eco- friendly route to recover chlorine from HCl-containing byproduct streams in the chemical industry. This process has attracted renewed interest in the last decade due to an increased chlorine demand and the growing excess of byproduct HCl from chlorination… (More)
A copper catalyst based on a delafossite precursor (CuAlO(2)) displays high activity and extraordinary lifetime in the gas-phase oxidation of HCl to Cl(2), representing a cost-effective alternative to RuO(2)-based catalysts for chlorine recycling.
Pharmacokinetic models are presented for the computation of time courses of blood levels of drugs in man following the consumption of contaminated food. Mathematically, two linear systems of differential equations are set up for the donor organism (e.g., trout) and for the recipient, (e.g., man), where the first system generates the initial conditions for… (More)
The determination of nicarbazin residues in foodstuffs of animal origin by two different methods, polarography, HPLC with electrochemical detection, is described. By applying pulse polarography at the dropping mercury electrode to acetonitrile extracts of animal tissues and eggs, a detection limit of 50 micrograms/kg and mean recoveries of 79% were… (More)
T. Schmidt,1 R. J. Haug,1,3 Vladimir I. Fal’ko,1,4 K. v. Klitzing,1 A. Förster,2 and H. Lüth2 1Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, 70569 Stuttgart, Germany 2Institut für Schichtund Ionentechnik, Forschungszentrum Jülich GmbH, Postfach 1913, 52428 Jülich, Germany 3Institut für Festkörperphysik, Universität Hannover, Appelstrasse… (More)
The ternary antimonides (U(2/3)R(1/3))Sb(2) (R = Y, Ce-Nd, Sm, Gd-Tm) and (U(1/2)R(1/2))(3)Sb(7) (R = Y, Gd-Ho) have been prepared by reaction of the uranium antimonide USb(2) with the corresponding rare earth antimonides RSb(2) and an excess of elemental antimony at high temperatures. The crystal structure of the isotypic series (U(2/3)R(1/3))Sb(2) has… (More)
The simple conditions of a reductive electrochemical detection are described, which allows to determine the content of chloramphenicol (CAP) in trout down to 0.5 micrograms/kg.