@article{40226, author = {{Buey, J. and Díez, L. and Espinet, P. and Kitzerow, Heinz-Siegfried and Miguel, J.A.}}, issn = {{0946-2171}}, journal = {{Applied Physics B: Lasers and Optics}}, keywords = {{General Physics and Astronomy, Physics and Astronomy (miscellaneous), General Engineering}}, number = {{3}}, pages = {{355--358}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Optical storage effect in a platinum orthometalated liquid crystal}}}, doi = {{10.1007/s003400050400}}, volume = {{66}}, year = {{1998}}, } @article{40197, author = {{Rösler, Margit and Voit, Michael}}, issn = {{0377-0427}}, journal = {{Journal of Computational and Applied Mathematics}}, keywords = {{Applied Mathematics, Computational Mathematics}}, number = {{1-2}}, pages = {{337--351}}, publisher = {{Elsevier BV}}, title = {{{Biorthogonal polynomials associated with reflection groups and a formula of Macdonald}}}, doi = {{10.1016/s0377-0427(98)00168-x}}, volume = {{99}}, year = {{1998}}, } @article{40200, author = {{Rösler, Margit and Voit, Michael}}, issn = {{0196-8858}}, journal = {{Advances in Applied Mathematics}}, keywords = {{Applied Mathematics}}, number = {{4}}, pages = {{575--643}}, publisher = {{Elsevier BV}}, title = {{{Markov Processes Related with Dunkl Operators}}}, doi = {{10.1006/aama.1998.0609}}, volume = {{21}}, year = {{1998}}, } @inbook{40614, author = {{Grotjahn, Rebecca}}, booktitle = {{Arnfried Edler zum 60. Geburtstag. Eine Dankesgabe}}, editor = {{Bäßler, Hans }}, pages = {{43–46}}, publisher = {{Selbstverlag}}, title = {{{Der musikalische Alltag der Lucia König}}}, year = {{1998}}, } @article{34905, abstract = {{Let ℚ(α) be an algebraic number field given by the minimal polynomial f of α. We want to determine all subfields ℚ(β) ⊂ Q(α) of given degree. It is convenient to describe each subfield by a pair (g, h) ∈ Z [t] x ℚ[t] such that g is the minimal polynomial of β = h(α) . There is a bijection between the block systems of the Galois group of f and the subfields of ℚ(α). These block systems are computed using cyclic subgroups of the Galois group which we get from the Dedekind criterion. When a block system is known we compute the corresponding subfield using p- adic methods. We give a detailed description for all parts of the algorithm.}}, author = {{Klüners, Jürgen}}, journal = {{Journal de Theorie des Nombres de Bordeaux}}, number = {{2}}, pages = {{243--271}}, publisher = {{Elsevier BV}}, title = {{{On computing subfields. A detailed description of the algorithm }}}, doi = {{https://jtnb.centre-mersenne.org/item/?id=JTNB_1998__10_2_243_0}}, volume = {{10}}, year = {{1998}}, } @inproceedings{43335, abstract = {{A microscopic many-body theory is presented which allows one to compute the linear and nonlinear optical properties of semiconductor superlattices in the presence of static and time-dependent electric fields applied in the growth direction. For static fields the Bloch-oscillation dynamics, the role of Coulomb effects, carrier relaxation, phonon scattering, and inter- and intraband polarization dephasing is analyzed. The observability of dynamic localization using optical spectroscopy is discussed for alternating applied fields.}}, author = {{Meier, Torsten and Je, K.-C and Rossi, F. and Hader, J. and Thomas, P. and Koch, S.W.}}, booktitle = {{Ultrafast Phenomena in Semiconductors II}}, pages = {{20--27}}, publisher = {{SPIE}}, title = {{{Coherent electric-field effects in semiconductors}}}, doi = {{10.1117/12.306150}}, volume = {{3277}}, year = {{1998}}, } @article{43338, abstract = {{A theory for four-wave-mixing signals from molecular aggregates, which includes effects of two-exciton states, static disorder, and coupling to a phonon bath with an arbitrary spectral density, is developed. The third-order polarization is rigorously partitioned into a coherent and a sequential contribution. The latter is given by a sum of an exciton-hopping and a ground state (bleaching) terms, both expressed using the doorway-window representation. Applications are made to photon-echo and pump-probe spectroscopies of the B850 system of the LH2 antenna in purple bacteria.}}, author = {{Meier, Torsten and Zhang, W.M. and Chernyak, V. and Mukamel, S.}}, journal = {{The Journal of chemical physics}}, number = {{18}}, pages = {{7763--7774}}, publisher = {{American Institute of Physics}}, title = {{{Exciton-Migration and Three-Pulse Femtosecond Optical Spectroscopies of Photosynthetic Antenna Complexes}}}, doi = {{10.1063/1.476212}}, volume = {{108}}, year = {{1998}}, } @article{43337, abstract = {{Femtosecond spectroscopies of chlorophyll dimers and the LH2 antenna complex are calculated using a theory that incorporates the effects of two–exciton states, static disorder and coupling of excitons to phonons with an arbitrary spectral density. Applications are made to pump–probe and echo peak–shift measurements in the B820 dimers, and to fluorescence depolarization in the B850 system of the LH2 antenna of purple bacteria.}}, author = {{Meier, Torsten and Zhang, W.M. and Chernyak, V. and Mukamel, S.}}, journal = {{Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences}}, number = {{1736}}, pages = {{405--419}}, publisher = {{The Royal Society}}, title = {{{Simulation of Three-Pulse-Echo and Fluorescence Depolarization in Photosynthetic Aggregates}}}, doi = {{10.1098/rsta.1998.0173}}, volume = {{356}}, year = {{1998}}, } @article{43336, abstract = {{We investigate the nonlinear dynamics of the composite absorber-cavity system by performing femtosecond time-resolved four-wave mixing experiments on a semiconductor microcavity. The nonlinear response exhibits an unexpected temporal behavior that distinctively differs from that of other multilevel systems. Accompanying model calculations show that the observed behavior is a direct consequence of the mixed electron-photon character of the absorber-cavity system.}}, author = {{Meier, Torsten and Koch, M. and Shah, J.}}, journal = {{Physical Review B}}, number = {{4}}, pages = {{2049--2052}}, publisher = {{American Physical Society}}, title = {{{Coupled absorber-cavity system: Observation of a characteristic nonlinear response}}}, doi = {{10.1103/PhysRevB.57.R2049}}, volume = {{57}}, year = {{1998}}, } @article{43339, author = {{Meier, Torsten and Thomas, P. and Koch, S.W.}}, journal = {{Physics of Low-Dimensional Structures (PLDS)}}, number = {{3-4}}, pages = {{1--44}}, title = {{{Coherent Effects in Photoexcited Semiconductor Superlattices with Electric Fields}}}, volume = {{1998}}, year = {{1998}}, } @inbook{43538, author = {{Schroeter-Wittke, Harald}}, booktitle = {{Kaum zu glauben - Von der Häresie und dem Umgang mit ihr. Heiner Faulenbach zum 60. Geburtstag}}, editor = {{von Bülow, Vicco and Lexutt, Athina}}, pages = {{328--342}}, publisher = {{CMZ-Verlag}}, title = {{{Semper aliquis haeresis. Dreieinhalb Grenzgänge im Labyrinth von predigt und Häresie}}}, year = {{1998}}, } @inbook{43535, author = {{Schroeter-Wittke, Harald}}, booktitle = {{Theopoesie. Theologie und Poesie in hermeneutischer Sicht}}, editor = {{Schröer, Henning and Fermor, Gotthard and Schroeter-Wittke, Harald}}, pages = {{121--127}}, title = {{{Hindemiths Symphonie "Mathis der Maler". Sprunghafter Versuch, einen musikalischen Vortrag zusammenzufassen}}}, year = {{1998}}, } @inbook{43537, author = {{Schroeter-Wittke, Harald}}, booktitle = {{Kleiner Kabarettistischer Katechismus}}, editor = {{Ruddat, Günter and Schroeter-Wittke, Harald}}, pages = {{305--311}}, title = {{{Wider die Onanousie! oder: Warum es der Kirche gut tut, fremd zu gehen}}}, year = {{1998}}, } @article{43539, author = {{Schroeter-Wittke, Harald}}, journal = {{Praktische Theologie}}, pages = {{251--256}}, title = {{{Verletzung und Vernetzung. Erfahrungen aus der Arbeit mit Kunst in Bonner Kirchengemeinden}}}, volume = {{33}}, year = {{1998}}, } @book{43536, editor = {{Schroeter-Wittke, Harald and Ruddat, Günter}}, isbn = {{9783870625061}}, pages = {{320}}, publisher = {{CMZ-Verlag}}, title = {{{Kleiner Kabarettistischer Katechismus. Henning Schröer zum 66. Geburtstag}}}, year = {{1998}}, } @book{43534, editor = {{Schröer, Henning and Fermor, Gotthard and Schroeter-Wittke, Harald}}, isbn = {{978-3-87062-032-5}}, pages = {{164}}, publisher = {{CMZ-Verlag}}, title = {{{Theopoesie. Theologie und Poesie in hermeneutischer Sicht}}}, year = {{1998}}, } @misc{42622, author = {{Fuchs, Christian}}, booktitle = {{Informatik Forum 1998 (3+4)}}, title = {{{Review of “Information und Selbstorganisation“ (Information and self-organization, edited by N. Fenzl/W. Hofkirchner/G. Stockinger)}}}, year = {{1998}}, } @misc{42827, author = {{Kraft, Kerstin}}, publisher = {{in: form + zweck 15, 30. Jg., S. 44–53}}, title = {{{‘Schnittmuster’}}}, year = {{1998}}, } @misc{42828, author = {{Kraft, Kerstin}}, publisher = {{, in: Menschen, Nasen, Taschentücher, hrsg. von Gabriele Donder-Langer und Harry M. Zwergel, Kassel 1998, S. 79–89}}, title = {{{‘Gefaltete Kunst – Kunst des Faltens’}}}, year = {{1998}}, } @article{26009, abstract = {{Lamellar mesostructured aluminophosphates were synthesized from aluminum triisopropoxide and phosphoric acid; monododecyl phosphate surfactant was used as structure-directing template. Depending on the relative Al/P ratio in the samples, variable relative amounts of tetrahedrally and octahedrally coordinated Al are found, indicating that both aluminophosphate and aluminum oxide species (as thermodynamically favored) are being formed in the syntheses. This is investigated quantitatively by Al K-edge XANES spectroscopy. The same syntheses were carried out without phosphoric acid, resulting in similar lamellar structures. The inorganic lamellae of these products consist to a significant extent of aluminophosphate rather than exclusively of aluminum oxide, which means that the phosphate headgroups of the surfactant molecules become incorporated into the inorganic network. Thus, for the first time, the surfactant serves as both template and reactant.}}, author = {{Fröba, Michael and Tiemann, Michael}}, issn = {{0897-4756}}, journal = {{Chemistry of Materials}}, pages = {{3475--3483}}, title = {{{A New Role of the Surfactant in the Synthesis of Mesostructured Phases:  Dodecyl Phosphate as Template and Reactant for Aluminophosphates}}}, doi = {{10.1021/cm980712c}}, year = {{1998}}, }