TY - JOUR A1 - Schoeps, Julius H. T1 - Under the influence of Heinrich Heine : Aron Bernstein as a writer and literary critic Y1 - 1992 ER - TY - JOUR A1 - Schneider, Ingo A1 - Köhler, Brigitte T1 - Amitrole tolerance in cell and tissue cultures and regenerated plants from Nicotiana plumbaginifolia : II. Selection system: suspension culture Y1 - 1992 ER - TY - BOOK A1 - Schmidt, Hans-Jürgen A1 - Wang, Anzhong T1 - Plane domain walls when coupled with the Brans-Dicke scalar field T3 - Preprint / Universität Potsdam, Fachbereich Mathematik Y1 - 1992 VL - 1992, 06 PB - Univ. CY - Potsdam ER - TY - BOOK A1 - Schmidt, Hans-Jürgen T1 - On inflation within closed Fiedmann universe models T3 - Preprint / Universität Potsdam, Fachbereich Mathematik Y1 - 1992 VL - 1992, 02 PB - Univ. CY - Potsdam ER - TY - BOOK A1 - Schmidt, Hans-Jürgen T1 - Scale-invariant gravity in two dimensions II T3 - Preprint / Universität Potsdam, Fachbereich Mathematik Y1 - 1992 VL - 1992, 03 PB - Univ. CY - Potsdam ER - TY - BOOK A1 - Schmidt, Hans-Jürgen T1 - On the de Sitter space-time : the geometric foundation of infaltionary cosmology T3 - Preprint / Universität Potsdam, Fachbereich Mathematik Y1 - 1992 VL - 1992, 10 PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Saupe, Gabriele A1 - Thieme, Siegfried T1 - Rual areas in the land of Brandenburg - whatïs their future? Y1 - 1992 ER - TY - BOOK A1 - Reuter, Stefan A1 - Schmidt, Hans-Jürgen T1 - On the Wheeler-de Witt equation for homogeneous cosmological models T3 - Preprint / Universität Potsdam, Fachbereich Mathematik Y1 - 1992 VL - 1992, 11 PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Reiche, Jürgen A1 - Pietsch, Ullrich A1 - Fink, Hans-Peter A1 - Lemmetyinen, Helge T1 - A comparison fo x-ray methods for structure refinement of Langmuir-Blodgett multilayers N2 - The possibilities and limits of structure refinement of Langmuir-Blodgett films by means of symmetrical reflection of X- rays are described using the example of a stearic acid multilayer. Three different techniques for the determiantion of the electron density profile from reflectivity data are compared; a Fourier method, a Patterson method, and model calculations. The important role of the a priori information for finding the besft structure model is outlined. Y1 - 1992 ER - TY - JOUR A1 - Reiche, Jürgen A1 - Dietel, Reinhard A1 - Lemmetyinen, Helge A1 - Janietz, Dietmar A1 - Lemmetyinen, Helge A1 - Brehmer, Ludwig T1 - Edge-on Langmuir-Blodgett multilayers derived from disc-shaped multiyne mesogens N2 - Langmuir-Blodgett(LB) multilayers were prepared from disc-shaped multiyne mesogens based on amphiphilic alkyl pentakis(aryl-ethynyl)benzene ethers. The two compounds used are characterized by five hydrophobic flexible chains and one hydrophilic substituent at the terminal position of the alkoxy chain. The LB films were analysed by X-ray scattering and spectroscopic measurements. An edge-on arrangement of the two discotic pentaalkynes within Y-type bilayers with a different packing density proved to be possible for the LB films of both compounds. Y1 - 1992 ER -