@article{WuBeckerWaagetal.1991, author = {Wu, Y.S. and Becker, Charles R. and Waag, A. and Kraus, M. M. and Bicknell-Tassius, R. N. and Landwehr, G.}, title = {Correlation of the Cd-to-Te ratio on CdTe surfaces with the surface structure}, isbn = {0163-1829}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-37789}, year = {1991}, abstract = {We report here that reconstruction on (100), (1lIlA, and (1l1lB CdTe surfaces is either C(2X2), (2X2), and (l X I) or (2X I), (l X I), and (l X I) when they are Cd or Te stabilized, respectively. There is a mixed region between Cd and Te stabilization in which the reflected high-energy electron-diffraction (RHEED) patterns contain characteristics of both Cd- and Te-stabilized surfaces. We have also found that the Cd-to-Te ratio of the x-ray photoelectron intensities of their 3d\(_{3/ 2}\) core levels is about 20\% larger for a Cd-stabilized (1lIlA, (1lIlB, or (100) CdTe surface than for a Te-stabilized one. According to a simple model calculation, which was normalized by means of the photoelectron intensity ratio of a Cd-stabilized (lll)A and aTe-stabilized (1l1lB CdTe surface, the experimental data for CdTe surfaces can be explained by a linear dependence of the photoelectron-intensity ratio on the fraction of Cd in the uppermost monatomic layer. This surface composition can be correlated with the surface structure, i.e., the corresponding RHEED patterns. This correlation can in turn be employed to determine Te and Cd evaporation rates. The Te reevaporation rate is increasingly slower for the Te-stabilized (Ill) A, (l1l)B, and (100) surfaces, while the opposite is true for Cd from Cd-stabilized (Ill) A and (Ill)B surfaces. In addition, Te is much more easily evaporated from all the investigated surfaces than is Cd, if the substrate is kept at normal molecular-beam-epitaxy growth temperatures ranging from 2oo·C to 300 ·C.}, subject = {Festk{\"o}rperphysik}, language = {en} } @article{WuBeckerWaagetal.1991, author = {Wu, Y. S. and Becker, Charles R. and Waag, A. and Bicknell-Tassius, R. N. and Landwehr, G.}, title = {The effects of laser illumination and high energy electrons on molecular-beam epitaxial growth of CdTe}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-30795}, year = {1991}, abstract = {We report the results of a detailed investigation on the Te-stabilized (2 x 1) and the Cdstabilized c( 2 X 2) surfaces of ( 100) CdTe substrates. The investigation demonstrates for the first time that both laser illumination and, to a greater extent, high-energy electron irradiation increase the Te desorption and reduce the Cd desorption from ( 100) CdTe surfaces. Thus it is possible by choosing the proper growth temperature and photon or electron fluxes to change the surface reconstruction from the normally Te-stabilized to a Cd-stabilized phase.}, language = {en} } @article{WintermeyerRdestLudwigetal.1991, author = {Wintermeyer, E. and Rdest, U. and Ludwig, B. and Debes, A. and Hacker, J{\"o}rg}, title = {Characterization of legiolysin (lly); responsible for hemolytic activity, colour production and fluorescence of Legionella pneumophila}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-59706}, year = {1991}, abstract = {No abstract available}, subject = {Infektionsbiologie}, language = {en} } @inproceedings{WinotoMorbachUlrichsMuellerRuchholtz1991, author = {Winoto-Morbach, S. and Ulrichs, Karin and M{\"u}ller-Ruchholtz, W.}, title = {New Developments in Biodegradable Microspheres For Magnetic Separation Techniques}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-45712}, year = {1991}, abstract = {No abstract available}, subject = {Immunbiologie}, language = {en} } @article{WinklerVielkindSchartl1991, author = {Winkler, Christoph and Vielkind, J{\"u}rgen R. and Schartl, Manfred}, title = {Transient expression of foreign DNA during embryonic and larval development of the medaka fish (Oryzias latipes)}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-61743}, year = {1991}, abstract = {Species of small fish are becoming useful tools for studies on vertebrate development. Wehave investigated the developing embryo of the Japanese medaka for its application as a transient expression system for the in vivo analysis of gene regulation and function. The temporaland spatial expression patterns ofbacterial chloramphenicol acetyltransferase and galactosidase reporter genes injected in supercoiled plasmid form into the cytoplasm of one cell of the two-cell stage embryo was promoter-specific. The transient expression was found to be mosaic within the tissue and organs reflecting the unequal distribution of extrachromosomal foreign DNA and the intensive cell mixing movements that occur in fish embryogenesis. The expression data are consistent with data on DNA fate. Foreign DNA persisted during embryogenesis and was still detectable in some 3- and 9-month-old adult fish; it was found in high molecular weight form as weil as in circular plasmid conformations. The DNA was replicated during early and late embryogenesis. Our data indicate that the developing medaka embryo is a powerful in vivo assay system for studies of gene regulation and function.}, subject = {Physiologische Chemie}, language = {en} } @article{WilhelmZaccagnini1991, author = {Wilhelm, Gernot and Zaccagnini, Carlo}, title = {Excavations at Tell Karrana 3 (1985 and 1986)}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-85963}, year = {1991}, abstract = {no Abstract available}, subject = {Tell Karrana}, language = {en} } @article{Wilhelm1991, author = {Wilhelm, Gernot}, title = {Zur hurritischen Gebetsliteratur}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-51127}, year = {1991}, abstract = {No abstract available}, subject = {Koch}, language = {de} } @article{Wilhelm1991, author = {Wilhelm, Gernot}, title = {Probleme der hethitischen Chronologie}, series = {Orientalische Literaturzeitung}, volume = {86}, journal = {Orientalische Literaturzeitung}, number = {5/6}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-128499}, pages = {469-476}, year = {1991}, abstract = {No abstract available.}, subject = {Hethiter}, language = {de} } @article{Wilhelm1991, author = {Wilhelm, Gernot}, title = {kulbābu}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-72399}, year = {1991}, abstract = {No abstract available}, subject = {Waš-tul}, language = {de} } @article{Wilhelm1991, author = {Wilhelm, Gernot}, title = {Hethiter und Hurriter}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-87876}, year = {1991}, abstract = {No Abstract available}, subject = {Alter Orient}, language = {de} } @article{Wilhelm1991, author = {Wilhelm, Gernot}, title = {A Hurrian Letter from Tell Brak}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-85972}, year = {1991}, abstract = {No abstract available.}, subject = {Tell Brak}, language = {en} } @incollection{Wilhelm1991, author = {Wilhelm, Gernot}, title = {kulbābu}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-103626}, publisher = {Universit{\"a}t W{\"u}rzburg}, year = {1991}, abstract = {no Abstract available}, language = {de} } @book{Wilhelm1991, author = {Wilhelm, Gernot}, title = {Literarische Texte in sumerischer und akkadischer Sprache}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-87622}, publisher = {Universit{\"a}t W{\"u}rzburg}, year = {1991}, abstract = {No abstract available.}, subject = {Boğazkale}, language = {de} } @incollection{WeinertSchneiderBeckmann1991, author = {Weinert, Franz E. and Schneider, Wolfgang and Beckmann, J.}, title = {F{\"a}higkeitsunterschiede, Fertigkeitstraining und Leistungsniveau}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-86612}, publisher = {Universit{\"a}t W{\"u}rzburg}, year = {1991}, abstract = {No abstract available.}, subject = {Leistung}, language = {de} } @article{WeinertSchneiderAsendorpfetal.1991, author = {Weinert, Franz E. and Schneider, Wolfgang and Asendorpf, Jens B. and Bullock, M. and Helmke, Andreas and Knopf, Monika and Nunner-Winkler, G. and Stern, E. and Strube, G. and Weber, Andreas}, title = {Intra- und interindividuelle Unterschiede in der psychischen Entwicklung von Kindern}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-86627}, year = {1991}, abstract = {No abstract available.}, subject = {Kind}, language = {de} } @incollection{Wehgartner1991, author = {Wehgartner, Irma}, title = {56. Schale (Typus B)}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-129371}, publisher = {Universit{\"a}t W{\"u}rzburg}, year = {1991}, abstract = {Katalogbeitrag}, subject = {Staatliche Museen zu Berlin. Antikensammlung}, language = {de} } @incollection{Wehgartner1991, author = {Wehgartner, Irma}, title = {59. Schale (Typus B)}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-129382}, publisher = {Universit{\"a}t W{\"u}rzburg}, year = {1991}, abstract = {Katalogbeitrag}, subject = {Staatliche Museen zu Berlin. Antikensammlung}, language = {de} } @book{Wehgartner1991, author = {Wehgartner, Irma}, title = {Corpus Vasorum Antiquorum / Deutschland. 62. Berlin: Antikenmuseum ehemals Antiquarium, 8}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-87552}, publisher = {Universit{\"a}t W{\"u}rzburg}, year = {1991}, abstract = {No abstract available.}, subject = {Griechenland }, language = {de} } @article{WaelbroeckCamusTastenoyetal.1991, author = {Waelbroeck, M. and Camus, J. and Tastenoy, M. and Mutschler, E. and Strohmann, C. and Tacke, Reinhold and Lambrecht, G. and Christophe, J.}, title = {Binding affinities of hexahydro-difenidol and hexahydro-sila-difenidol analogues at four muscarinic receptor subtypes: constitutional and stereochemical aspects}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-64128}, year = {1991}, abstract = {Hexahydro-sila-difenidoJ and eight analogues behaved as simple cumpetitive inhibitors of eHJN·methyl·scopoJamine binding to homogenates frorn human neuroblastoma NB-OK 1 cells (M\(_1\) sites), rat heart (M\(_2\) sites), rat pancreas (M\(_3\) sites), and rat striatum 'B' sites (M\(_4\) sites). Pyrrolidino- and hexamethyleneimino analogues showed the same sekctivity profile as the parent compound. Hexahydro-sila-difenidol methiodide and the methiodide of p-fluoro-hexahydro·sila-difenidol had a f{\"u}gher affinity but a lower selectivity than the tertiary amines. Compounds containing a p·methoxy, p-chJoro or p-fluoro substituent in the phenyl ring of hexahydro-sila-difenidol showed a qualitative)y similar selectivity profile as the parent compound (i.e., M\(_1\)= M\(_3\) = M\(_4\) >M\(_2\) ), but up to 16-fold lower affinities. o-Methoxy-hexahydro-sila-difenidol has a lower affinity than hexahydro-sila-difeni.:!o! at the four binding sites. lts selectivity profile (M\(_4\) > M\(_1\), M\(_3\) > M\(_2\) ) was different from hexahydro-sila-difenidol. Replacement of the centrat silicon atom of hexahydro-sila-difenidol, p-fluoro-hexahydro-sila-difenidol and thdr quatemary (N-methylated) analogues by a carbon atom did not change their binding affinities significantly. The iour muscarinic receptors showed a higher affinity for the (R)- than for the (S)-enantiomers of hexahydro-difenidol, p-fluorohexahydro-difenidol and their methiodides. The stereoselectivity varied depending on the receptor subtype and drug considered.}, subject = {Anorganische Chemie}, language = {en} } @article{WaelbroeckCamusTastenoyetal.1991, author = {Waelbroeck, M. and Camus, J. and Tastenoy, M. and Mutschler, E. and Strohmann, C. and Tacke, Reinhold and Lambrecht, G. and Christophe, J.}, title = {Stereoselectivity of (R)- and (S)-hexahydro-difenidol binding to neuroblastoma M\(_1\), cardiac M\(_2\), pancreatic M\(_3\), and striatum M\(_4\) muscarinic receptors}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-64135}, year = {1991}, abstract = {(R)-Hexahydro-difenidol has a higher affinity for M\(_1\) receptors in NB-OK 1 cells, pancreas M\(_3\) and striatum M\(_4\) receptors (pKi 7.9 to 8.3) than for cardiac M2 receptors (pKi 7 .0). (8)-Hexahydro-difenidol, by contrast, is nonselective (pKi 5.8 to 6.1). Our goal in the present study was to evaluate the importance ofthe hydrophobic phenyl, and cyclohexyl rings of hexahydro-difenidol for the stereoselectivity and reeeptor selectivity of hexahydro-difenidol binding to the four muscarinic receptors. Our results indieated that replacement of the phenyl ring of hexahydro-difenidol by a cyclohexyl group <~ dicyclidol) and ofthe cyclohexyl ring by a phenyl moiety <~ difenidol) indueed a !arge (4- to 80-fold) decrease in binding affinity for all musearlnie receptors. Difenidol had a signifieant preference for M\(_1\) , M\(_3\) , and M\(_4\) over M\(_2\) receptors; dicyclidol, by eontrast, had a greater affinity for M\(_1\) and M\(_4\) than for M\(_2\) and M\(_3\) receptors. The binding free energy deerease due to replacement ofthe phenyl and the cyelohexyl groups of(R)-hexahydro-difenidol by, respectively, a eyclohexyl and a phenyl moiety was almostadditive in the ease of M\(_4\) (striatum) binding sites. In the ease ofthe cardiac M\(_2\), pancreatic M\(_3\) , or NB-OK 1 M\(_1\) receptors the respective binding free energies were not eompletely additive. These results suggest that the four (R)-hexahydro-difenidol ''binding moieties" (phenyl, cyclohexyl, hydroxy, and protonated amino group) cannot simultaneously form optimal interaetions with the M\(_1\), M\(_2\), and M\(_3\) muscarinic receptors. When eaeh of the hydrophobic groups is modified, the position of the whole molecule, relative to the four subsites, was changed to allow an optimal overall interaction with the musearlnie receptor.}, subject = {Anorganische Chemie}, language = {en} }