Homotopie-Operationen relativer Homotopiegruppen I

Ohne Zusammenfassung     

Termgleichungen in glatt-idempotenten Halbgruppen

Ohne Zusammenfassung     

The role of correlation in calculations on 1,2-difluoroethylenes. The cis-trans energy difference

Correlation-corrected ab initio calculations predict cis-1,2-difluoroethylene to be more stable than trans. With second-order Rayleigh-Schrödinger Møller-Plesset theory, the cis form is lower by 0.9-1.3 kcal/mol, depending on the basis set, in agreement with the experimental energy difference ΔE = 1.1 kcal/mol. The positive ΔE is primarily due to greater intrapair correlation energy in the cis form.     

Beiträge zur Chemie der Pyrrolpigmente, 47. Mitt.

Carrier mediated transport of bilirubin, biliverdin, their dimethylesters and aetiobiliverdin-IV- is measured using a variety of potential carriers like proteins, peptides, tensides and -cyclodextrin in a bulk membrane model. A strong dependence of the transport flux densities on structural details of the carriers as well as of the bile pigments themselves is observed.