TY - BOOK A1 - Norberg, Madlena A1 - Neumann, Martin A1 - Groß, Steffen A1 - Muche, Klaus A1 - Bresan, Annett A1 - Jahn, Pětš Milan A1 - Sievers, Hans-Jürgen A1 - Měškank, Werner A1 - Hoy, Therese A1 - Kisser, Carlo Josef Viktor ED - Norberg, Madlena ED - Kosta, Peter T1 - Domownja/Heimat : sorbische/wendische Perspektiven auf die Lausitz N2 - Die „Potsdamer Beiträge zur Sorabistik – Podstupimske psinoski k Sorabistice“ Nr. 9 sind wiederum ein Sammelband mit verschiedenen Aufsätzen. Die Thematik ist in diesem Band „Domownja/Heimat. Sorbische/wendische Perspektiven auf die Lausitz“. Die Schrift ist in drei Themenbereiche unterteilt, einen Tagungsbericht von einem internationalen Kolloquium, das im Februar 2009 an der Brandenburgischen Technischen Universität in Cottbus (BTU) veranstaltet wurde und o.g. Titel trug. Darüber hinaus sind im Heft vier Referate eines zweiten Kolloquiums zu Ehren des niedersorbischen Pfarrers Kito Pank (1808-1895) abgedruckt. Im weiteren finden sich in der Ausgabe unter der Rubrik: Neues aus dem sorbischen/wendischen Leben zwei Aufsätze zu einer Schrifttumsausstellung des Wendischen Museums in Cottbus, ein Umfrageresultat zur Wahrnehmung der Sorben/Wenden in der Stadt Cottbus und ein umfassender Artikel zum sorbischen/wendischen Siedlungsgebiet im Rahmen der Minderheitenpolitik in Brandenburg. T3 - Podstupimske pśinoski k Sorabistice = Potsdamer Beiträge zur Sorabistik - 9 KW - Heimatgefühl einer Minderheit KW - Siedlungsgebiet KW - Wahrnehmung der Minderheit KW - Schrifttum der Sorben/Wenden KW - Kirchengeschichte der Sorben/Wenden Y1 - 2009 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-37364 SN - 978-3-86956-022-9 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - BOOK A1 - Norberg, Madlena A1 - Ratajczak, Cordula A1 - Groß, Steffen A1 - Neumann, Martin A1 - Pogoda, Ulrich A1 - Měškank, Werner ED - Norberg, Madlena ED - Kosta, Peter T1 - Sammelband zur sorbischen/wendischen Kultur und Identität N2 - Die „Potsdamer Beiträge zur Sorabistik – Podstupimske pśinoski k Sorabistice“ sind ein Sammelband mit verschiedenen Aufsätzen zur Thematik sorbische/wendische Identität und Kultur. Die Schrift ist dazu in drei Themenbereiche unterteilt, einen Tagungsbericht von einem internationalen Kolloquium, das im November 2007 an der Brandenburgischen Technischen Universität in Cottbus veranstaltet wurde und den Titel „Sind die sorbische/wendische Sprache und Identität noch zu retten“ trug. Darüber hinaus sind im Heft drei Referate des Kolloquiums abgedruckt. Im weiteren finden sich im Heft zwei Aufsätze zur sorbischen/wendischen Musikgeschichte und zwei Artikel zur sorbischen/wendischen Kirchengeschichte. Diesen Artikeln ist eine umfangreiche Statistik der evangelischen Gottesdienste in niedersorbischer Sprache beigefügt, die vorrangig nach der politischen Wende 1989 in der Niederlausitz gehalten wurden. N2 - The „Potsdamer Beiträge zur Sorabistik – Podstupimske pśinoski k Sorabistice“ is a collection of papers on the topic of Sorbian culture and identity. For this purpose, the volume is thematically divided into three areas: Proceedings of an international colloquium, held in November 2007 at Brandenburg University of Technology in Cottbus with the title “Is it possible to save the Lower Sorbian language and identity?”. Secondly the book contains two papers about Sorbian history of music and, thirdly, two essays covering Sorbian history of church. To these essays comprehensive statistics added about protestant services held in Lower Sorbian language after the political change in 1989 in the Lower Sorbian area. T3 - Podstupimske pśinoski k Sorabistice = Potsdamer Beiträge zur Sorabistik - 8 KW - Niedersorbische Sprache KW - sorbische Identität KW - Sorbische Musikgeschichte KW - Sorbische Kirchengeschichte KW - Lower Sorbian language KW - Sorbian identity KW - Sorbian history of music KW - Sorbian history of church Y1 - 2008 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-18487 ER - TY - JOUR A1 - Höpfner, Ulf A1 - Frübing, Peter A1 - Neumann, Werner A1 - Kaminorz, Yvette A1 - Brehmer, Ludwig T1 - Polarization Processes of poly(DMDAAC) films studied by TSD current Y1 - 1996 ER - TY - JOUR A1 - Neumann, Werner A1 - Kasper, Sabine A1 - Kasper, Roberto T1 - Discharge Currents in Polymer Solids between Blocking Contacts Y1 - 1991 SN - 0-7803-0113- 7 ER - TY - JOUR A1 - Neumann, Werner T1 - Stromträgerrelaxationen in hochohmigen Polymerfestkörpern Y1 - 1991 ER - TY - BOOK A1 - Hänsel, Horst A1 - Neumann, Werner A1 - Hudel, Erich T1 - Physik : Bd. 2 Elektrizität, Optik, Raum und Zeit Y1 - 1993 SN - 3-86025-304-2 VL - 2 PB - Spektrum Akad. Verl. CY - Heidelberg ER - TY - BOOK A1 - Hänsel, Horst A1 - Neumann, Werner A1 - Wedell, Reiner T1 - Physik : Bd. 1 Mechanik und Wärmelehre Y1 - 1993 SN - 3-86025-046-9 VL - 1 PB - Spektrum Akad. Verl. CY - Heidelberg ER - TY - BOOK A1 - Hänsel, Horst A1 - Neumann, Werner A1 - Albrecht, Fred T1 - Physik : Bd. 4 Moleküle und Festkörper Y1 - 1996 SN - 3-86025-314-X VL - 4 PB - Spektrum Akad. Verl. CY - Heidelberg ER - TY - JOUR A1 - Bruma, Maria A1 - Mercer, Frank W. A1 - Schulz, Burkhard A1 - Dietel, Reinhard A1 - Neumann, Werner T1 - Fluorinated poly(benzoxazole-imide)s Y1 - 1994 ER - TY - BOOK A1 - Hänsel, Horst A1 - Neumann, Werner A1 - Hudel, Erich T1 - Physik : Bd. 3 Atome, Atomkerne, Elementarteilchen Y1 - 1995 SN - 3-86025-313-1 VL - 3 PB - Spektrum Akad. Verl. CY - Heidelberg ER - TY - JOUR A1 - Neumann, Werner A1 - Buchsteiner, Alexandra A1 - Mahler, Willy A1 - Geue, Thomas A1 - Pietsch, Ullrich T1 - Dielectric loss spectroscopy at fatty acid salt multilayers N2 - Dielectric loss spectroscopy (DLS) was performed at compact samples and lamellary organized Langmuir-Blodgett (LB) films from various fatty acid salts. Previous thermoanalytical measurements at compact samples revealed the appearance of two different phase transition temperatures; the lower one is related to the acid the second one to the acid salt molecules. In spite of ill defined electrical contacts with the film the characteristic DLS frequencies obtained from about 100nm thick multilayer films are similar to those recorded from bulk samples. No significant variations of frequencies were found changing the counter ions. Besides conductivity influence at low frequncies we found two relaxations related to the mobility of the dipolar carboxylat-metal group at about 100 and 10000Hz. One of these frequencies is related to the rotation around the chain axis. The strength of this relaxation increases significantly with increasing the sample temperature above 105°C. This temperature is connected with a structural phase transition observed by X-ray reflectometry. In case of Pb-stearate the results of the dielectric measurements help to interprete this structural change as a transition from an orthorhombic into a free-rotator phase. The uncorrelated rotation of molecules around their molecular axes initiates a much increased relaxation strength at the carboxylat-metal sites. Y1 - 2000 ER - TY - JOUR A1 - Frübing, Peter A1 - Kremmer, Alexander A1 - Neumann, Werner A1 - Gerhard, Reimund A1 - Guy, I. L. T1 - Dielectric relaxation in piezo-, pyro- and ferroelectric polyamide 11 N2 - Ferroelectric polyamide 11 films were prepared by melt-quenching, cold-drawing and electrical poling. Their ferroelectricity was studied by means of dielectric-hysteresis measurements. A remnant polarisation of up to 35 mC/m(2) and a coercive field of 75 MV/m were obtained. The piezoelectric d(33) coefficient and the pyroelectric coefficient of the films are reduced by annealing just below the melting region, but remain at about 3 pC/N and 8 muC/(m(2)K), respectively, during further heat treatment. Differential scanning calorimetry (DSC), dielectric relaxation spectroscopy (DRS) and thermally stimulated depolarisation (TSD) were applied for investigating the conformational changes induced by melt-quenching, cold-drawing and annealing. The results indicate that the cold-drawn film mainly consists of a rigid amorphous phase which exhibits considerably lower conductivity, no glass transition and consequently no dielectric a relaxation. Instead, an a, relaxation is found, which is related to chain motions in regions of the rigid amorphous phase where the amide-group dipoles are not perfectly ordered. Annealing removes imperfectly ordered structures, but does not affect the ferroelectric polarisation. Therefore, it may be concluded that essentially the a, relaxation causes the thermally non-stable part of the piezo- and pyroelectricity in polyamide 11 Y1 - 2004 ER - TY - JOUR A1 - Frübing, Peter A1 - Wegener, Michael A1 - Gerhard, Reimund A1 - Buchsteiner, Alexandra A1 - Neumann, Werner A1 - Brehmer, Ludwig T1 - Different molecular mechanisms for the dielectric hysteresis and pyroelectricity in a poly(vinyl alcohol) with azobenzene-alkoxy side chains N2 - By means of pyroelectrical measurements and dielectric spectroscopy as well as structural information from differential scanning calorimetry, it is shown that, in a poly(vinyl alcohol) with azobenzene-alkoxy side chains, pyroelctricity and dielectric hysteresis which are usually related to each other have different origins. The pyroelectric effect is explained with reversible dipole-density changes upon thermal expansion, whereas the dielectric hysteresis is proposed to result from a charge-carrier polarisation. Y1 - 1999 SN - 0277-786X ER - TY - JOUR A1 - Frübing, Peter A1 - Wegener, Michael A1 - Gerhard, Reimund A1 - Buchsteiner, Alexandra A1 - Neumann, Werner A1 - Brehmer, Ludwig A1 - Dietel, Reinhard T1 - Pyroelectric properties and dielectric hysteresis of a poly(vinylalcohol) with azobenzene alkoxy side chains Y1 - 1999 ER -