@article{HengstlerRingelBiefangetal.2000, author = {Hengstler, Jan Georg and Ringel, M. and Biefang, Katja and Hammel, S. and Milbert, U. and Gerl, M. and Klebach, M. and Diener, B. and Platt, Karl-Ludwig and B{\"o}ttger, Thomas and Steinberg, Pablo and Oesch, Franz}, title = {Cultures with cryopreserved hepatocytes : applicability for studies of enzyme induction}, year = {2000}, language = {en} } @article{MetzgerChenHoepfneretal.1997, author = {Metzger, Robert M. and Chen, Bo and H{\"o}pfner, Ulf and Lakshmikantham, M. V. and Vuillaume, Dominique and Kawai, Tsuyoshi and Wu, Xiangli and Tachibana, Hiroaki and Hughes, Terry and Sakurai, Hiromi and Baldwin, Jeffrey W. and Hosch, Christina and Cava, Michael P. and Brehmer, Ludwig and Ashwell, Geoffrey J.}, title = {Unimolecular electrical rectification in Hexadecylquinolinium Tricyanoquinodimethanide}, year = {1997}, language = {en} } @article{BrehmerHahnSeifertetal.1994, author = {Brehmer, Ludwig and Hahn, M. and Seifert, M. and Wernecke, R. and J{\"a}ger, Werner and Wonnenberg, R. and Zehner, C.}, title = {Verfahren zur Herstellung eines Feuchtsensor}, year = {1994}, language = {de} } @article{BrehmerHahnSeifertetal.1994, author = {Brehmer, Ludwig and Hahn, M. and Seifert, M. and Wernecke, R. and J{\"a}ger, Werner and Wonnenberg, R. and Zehner, C.}, title = {Feuchtesensor}, year = {1994}, language = {de} } @incollection{BilzStegerFischeretal.2017, author = {Bilz, Ludwig and Steger, Jette and Fischer, Saskia M. and Schubarth, Wilfried and Kunze, Ulrike}, title = {Zur Bedeutung des Gewaltverst{\"a}ndnisses von Lehrkr{\"a}ften f{\"u}r ihren Umgang mit Mobbing}, series = {Gewalt und Mobbing an Schulen : wie sich Gewalt und Mobbing entwickelt haben, wie Lehrer intervenieren und welche Kompetenzen sie brauchen}, booktitle = {Gewalt und Mobbing an Schulen : wie sich Gewalt und Mobbing entwickelt haben, wie Lehrer intervenieren und welche Kompetenzen sie brauchen}, editor = {Bilz, Ludwig and Schubarth, Wilfried and Dudziak, Ines and Fischer, Saskia M. and Niproschke, Saskia and Ulbricht, Juliane}, publisher = {Klinkhardt}, address = {Bad Heilbrunn}, isbn = {978-3-7815-2095-0}, publisher = {Universit{\"a}t Potsdam}, pages = {205 -- 217}, year = {2017}, language = {de} } @article{WangNespurekRakusanetal.2004, author = {Wang, G. and Nespurek, S. and Rakusan, J. and Karaskova, M. and Schauer, F. and Brehmer, Ludwig}, title = {Polarized electrolumineseence from bilayer structures}, issn = {1022-1360}, year = {2004}, abstract = {The photoalignment ability of poly[methyl(phenyl)silylene] (PMPSi) films makes it possible to use them as hole- transporting substrates for the preparation of organic oriented films. A PMPSi layer prepared by spin coating was irradiated, after drying, with linearly polarized UV light. Then, water-soluble hydroxyaluminium phthalocyaninesulfonate [Al(OH)Pc(SO3Na)(1-2)] was deposited by casting. The cell ITO/PMPSi/AI(OH)Pc(SO3Na)(1-2)/Al showed non-linear current- voltage characteristics. For applied voltages higher than 10 V, polarized electroluminescence was observed. Its spectral characteristic consisted of two peaks with maxima at about 320 and 700 nm; their polarized anisotropies R-EL = Phi(parallel to) / Phi(perpendicular to) were ca. 15 and 0.5, respectively}, language = {en} } @misc{HofreiterPaijmansGoodchildetal.2015, author = {Hofreiter, Michael and Paijmans, Johanna L. A. and Goodchild, Helen and Speller, Camilla F. and Barlow, Axel and Gonzalez-Fortes, Gloria M. and Thomas, Jessica A. and Ludwig, Arne and Collins, Matthew J.}, title = {The future of ancient DNA}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe}, number = {908}, issn = {1866-8372}, doi = {10.25932/publishup-43881}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-438816}, pages = {284 -- 295}, year = {2015}, abstract = {Technological innovations such as next generation sequencing and DNA hybridisation enrichment have resulted in multi-fold increases in both the quantity of ancient DNA sequence data and the time depth for DNA retrieval. To date, over 30 ancient genomes have been sequenced, moving from 0.7x coverage (mammoth) in 2008 to more than 50x coverage (Neanderthal) in 2014. Studies of rapid evolutionary changes, such as the evolution and spread of pathogens and the genetic responses of hosts, or the genetics of domestication and climatic adaptation, are developing swiftly and the importance of palaeogenomics for investigating evolutionary processes during the last million years is likely to increase considerably. However, these new datasets require new methods of data processing and analysis, as well as conceptual changes in interpreting the results. In this review we highlight important areas of future technical and conceptual progress and discuss research topics in the rapidly growing field of palaeogenomics.}, language = {en} } @article{HofreiterPaijmansGoodchildetal.2015, author = {Hofreiter, Michael and Paijmans, Johanna L. A. and Goodchild, Helen and Speller, Camilla F. and Barlow, Axel and Gonz{\´a}lez-Fortes, Gloria M. and Thomas, Jessica A. and Ludwig, Arne and Collins, Matthew J.}, title = {The future of ancient DNA: Technical advances and conceptual shifts}, series = {Bioessays : ideas that push the boundaries}, volume = {37}, journal = {Bioessays : ideas that push the boundaries}, number = {3}, publisher = {Wiley-Blackwell}, address = {Hoboken}, issn = {0265-9247}, doi = {10.1002/bies.201400160}, pages = {284 -- 293}, year = {2015}, abstract = {Technological innovations such as next generation sequencing and DNA hybridisation enrichment have resulted in multi-fold increases in both the quantity of ancient DNA sequence data and the time depth for DNA retrieval. To date, over 30 ancient genomes have been sequenced, moving from 0.7x coverage (mammoth) in 2008 to more than 50x coverage (Neanderthal) in 2014. Studies of rapid evolutionary changes, such as the evolution and spread of pathogens and the genetic responses of hosts, or the genetics of domestication and climatic adaptation, are developing swiftly and the importance of palaeogenomics for investigating evolutionary processes during the last million years is likely to increase considerably. However, these new datasets require new methods of data processing and analysis, as well as conceptual changes in interpreting the results. In this review we highlight important areas of future technical and conceptual progress and discuss research topics in the rapidly growing field of palaeogenomics.}, language = {en} } @article{TreydteHeitkoenigLudwig2009, author = {Treydte, Anna C. and Heitk{\"o}nig, Ignas M. A. and Ludwig, Fulco}, title = {Modelling ungulate dependence on higher quality forage under large trees in African savannahs}, issn = {1439-1791}, doi = {10.1016/j.baae.2008.03.003}, year = {2009}, abstract = {In African savannahs, large trees improve grass quality, particularly in dry and nutrient poor areas. Enhanced below-canopy grass nutrients, such as nitrogen and phosphorus contents should therefore attract and benefit grazers. To predict whether ungulates really need these forage quality islands we focused on four grazer species, i.e., zebra, buffalo, wildebeest, and warthog, differing in body size and digestive system. We confronted literature estimations of their feeding requirements with forage availability and quality, observed in three South African savannah systems, through linear modelling. The model predicted the proportion of below-canopy grass that grazers should include in their diet to meet their nutritional requirements. During the wet season, the model predicted that all animals could satisfy their daily nutrient requirements when feeding on a combination of below- and outside-canopy grasses. However, wildebeest, having relatively high nutrient demands, could meet their nutrient requirements only by feeding almost exclusively below canopies. During the dry season, all animals could gain almost twice as much digestible protein when feeding on below - compared to outside-canopy forage. Nonetheless, only warthogs could satisfy their nutrient requirements - when feeding almost exclusively on below-canopy grasses. The other ungulate species could not meet their phosphorus demands by feeding at either site without exceeding their maximum fibre intake, indicating the unfavourable conditions during the dry season. We conclude that grazing ungulates, particularly warthog, zebra, and buffalo, actually depend on the available below-canopy grass resources. Our model therefore helps to quantify the importance of higher quality forage patches beneath savannah trees. The composition of grazer communities depending on below-canopy grasses can be anticipated if grazer food requirements and the abundance of large trees in savannahs are known. The model suggests that the conservation of large single-standing trees in savannahs is crucial for maintenance of locally grazing herbivores.}, language = {en} } @article{BauerSchulzBrehmeretal.1995, author = {Bauer, J. and Schulz, Burkhard and Brehmer, Ludwig and B{\"o}tcher, M. and Jagdhold, U. and H{\"o}ppner, K. and Kulesch, A. and Dietzel, Birgit}, title = {Anwendung von Langmuir-Blodgett-Schichten als Resist f{\"u}r die Niederspannungs-Elektronenstrahl-Lithografie}, year = {1995}, language = {de} }