@article{BeegerBricksBroscheitetal.1996, author = {Beeger, Helmut and Bricks, Wolfgang and Broscheit, Frank and B{\"u}tow, Heike and B{\"u}tow, Martin and Englert, Wolfgang and Gehrke, Albrecht and Hallermann, Sigrun and Jahn, Gert and Kirsch, H. and Klohn, Werner and Markert, Wolfgang and Meißgeier, J{\"u}rgen and M{\"u}lders, Wolfgang and Nicklaus, W. and Reinhardt, Karl Heinz and Robel, B. and Schmidtke, Kurt-Dietmar and Werner-Tokarski, D.}, title = {Seydlitz Erdkunde 3 : Ausgabe Saarland}, publisher = {Schroedel}, address = {Hannover}, pages = {160 S.}, year = {1996}, language = {de} } @article{SchwopePiresKurpasetal.2022, author = {Schwope, Axel and Pires, Adriana M. and Kurpas, Jan and Doroshenko, Victor and Suleimanov, Valery F. and Freyberg, Michael and Becker, Werner and Dennerl, Konrad and Haberl, Frank and Lamer, Georg and Maitra, Chandreyee and Potekhin, Alexander Y. and Ramos-Ceja, Miriam E. and Santangelo, Andrea and Traulsen, Iris and Werner, Klaus}, title = {Phase-resolved X-ray spectroscopy of PSR B0656+14 with SRG/eROSITA and XMM-Newton}, series = {Astronomy and astrophysics : an international weekly journal}, volume = {661}, journal = {Astronomy and astrophysics : an international weekly journal}, publisher = {EDP Sciences}, address = {Les Ulis}, issn = {0004-6361}, doi = {10.1051/0004-6361/202141105}, pages = {21}, year = {2022}, abstract = {We present a detailed spectroscopic and timing analysis of X-ray observations of the bright pulsar PSR B0656+14. The observations were obtained simultaneously with eROSITA and XMM-Newton during the calibration and performance verification phase of the Spektrum-Roentgen-Gamma mission (SRG). The analysis of the 100 ks deep observation of eROSITA is supported by archival observations of the source, including XMM-Newton, NuSTAR, and NICER. Using XMM-Newton and NICER, we first established an X-ray ephemeris for the time interval 2015 to 2020, which connects all X-ray observations in this period without cycle count alias and phase shifts. The mean eROSITA spectrum clearly reveals an absorption feature originating from the star at 570 eV with a Gaussian sigma of about 70 eV that was tentatively identified in a previous long XMM-Newton observation. A second previously discussed absorption feature occurs at 260-265 eV and is described here as an absorption edge. It could be of atmospheric or of instrumental origin. These absorption features are superposed on various emission components that are phenomenologically described here as the sum of hot (120 eV) and cold (65 eV) blackbody components, both of photospheric origin, and a power law with photon index Gamma = 2 from the magnetosphere. We created energy-dependent light curves and phase-resolved spectra with a high signal-to-noise ratio. The phase-resolved spectroscopy reveals that the Gaussian absorption line at 570 eV is clearly present throughout similar to 60\% of the spin cycle, but it is otherwise undetected. Likewise, its parameters were found to be dependent on phase. The visibility of the line strength coincides in phase with the maximum flux of the hot blackbody. If the line originates from the stellar surface, it nevertheless likely originates from a different location than the hot polar cap. We also present three families of model atmospheres: a magnetized atmosphere, a condensed surface, and a mixed model. They were applied to the mean observed spectrum, whose continuum fit the observed data well. The atmosphere model, however, predicts distances that are too short. For the mixed model, the Gaussian absorption may be interpreted as proton cyclotron absorption in a field as high as 10(14) G, which is significantly higher than the field derived from the moderate observed spin-down.}, language = {en} } @article{AshastinaKuzminaRudayaetal.2018, author = {Ashastina, Kseniia and Kuzmina, Svetlana and Rudaya, Natalia and Troeva, Elena I. and Schoch, Werner H. and Roemermann, Christine and Reinecke, Jennifer and Otte, Volker and Savvinov, Grigoriy and Wesche, Karsten and Kienast, Frank}, title = {Woodlands and steppes}, series = {Quaternary science reviews : the international multidisciplinary research and review journal}, volume = {196}, journal = {Quaternary science reviews : the international multidisciplinary research and review journal}, publisher = {Elsevier}, address = {Oxford}, issn = {0277-3791}, doi = {10.1016/j.quascirev.2018.07.032}, pages = {38 -- 61}, year = {2018}, abstract = {Based on fossil organism remains including plant macrofossils, charcoal, pollen, and invertebrates preserved in syngenetic deposits of the Batagay permafrost sequence in the Siberian Yana Highlands, we reconstructed the environmental history during marine isotope stages (MIS) 6 to 2. Two fossil assemblages, exceptionally rich in plant remains, allowed for a detailed description of the palaeo-vegetation during two climate extremes of the Late Pleistocene, the onset of the last glacial maximum (LGM) and the last interglacial. In addition, altogether 41 assemblages were used to outline the vegetation history since the penultimate cold stage of MIS 6. Accordingly, meadow steppes analogue to modern communities of the phytosociological order Festucetalia lenensis formed the primary vegetation during the Saalian and Weichselian cold stages. Cold-resistant tundra-steppe communities (Carici rupestris-Kobresietea bellardii) as they occur above the treeline today were, in contrast to more northern locations, mostly lacking. During the last interglacial, open coniferous woodland similar to modern larch taiga was the primary vegetation at the site. Abundant charcoal indicates wildfire events during the last interglacial. Zoogenic disturbances of the local vegetation were indicated by the presence of ruderal plants, especially by abundant Urtica dioica, suggesting that the area was an interglacial refugium for large herbivores. Meadow steppes, which formed the primary vegetation during cold stages and provided potentially suitable pastures for herbivores, were a significant constituent of the plant cover in the Yana Highlands also under the full warm stage conditions of the last interglacial. Consequently, meadow steppes occurred in the Yana Highlands during the entire investigated timespan from MIS 6 to MIS 2 documenting a remarkable environmental stability. Thus, the proportion of meadow steppe vegetation merely shifted in response to the respectively prevailing climatic conditions. Their persistence indicates low precipitation and a relatively warm growing season throughout and beyond the late Pleistocene. The studied fossil record also proves that modern steppe occurrences in the Yana Highlands did not establish as late as in the Holocene but instead are relicts of a formerly continuous steppe belt extending from Central Siberia to Northeast Yakutia during the Pleistocene. The persistence of plants and invertebrates characteristic of meadow steppe vegetation in interior Yakutia throughout the late Quaternary indicates climatic continuity and documents the suitability of this region as a refugium also for other organisms of the Pleistocene mammoth steppe including the iconic large herbivores. (C)2018 Elsevier Ltd. All rights reserved.}, language = {en} } @misc{EmbsFunhoffLaschewskyetal.1991, author = {Embs, Frank and Funhoff, Dirk and Laschewsky, Andr{\´e} and Licht, Ulrike and Ohst, Holger and Prass, Werner and Ringsdorf, Helmut and Wegner, Gerhard and Wehrmann, Rolf}, title = {Preformed polymers for Langmuir-Blodgett films- molecular concepts}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17196}, year = {1991}, abstract = {The use of preformed polymers for the preparation of Langmuir-Blodgett (LB) multilayers is reviewed. Principles for polymer self-organization are outlined and the appropriate molecular designs are discussed. Recent developments in the different classes of polymers for LB multilayers are presented, and their outstanding properties highlighted.}, language = {en} } @article{IdlerIdlerVenusetal.1994, author = {Idler, Frank and Idler, Christine and Venus, Joachim and Schade, Werner}, title = {Einsatz von Milchs{\"a}urebakterien als Starterkulturen f{\"u}r die Konservierung von Gr{\"u}nfutterstoffen : Ergebnisse zur Verdaulichkeit mikrobiell konservierten Futters}, year = {1994}, language = {de} } @article{MatternRungeIdleretal.1996, author = {Mattern, Petra-Corinna and Runge, Heike and Idler, Frank and Schade, Werner and Annem{\"u}ller, Gerolf}, title = {Charakterisierung einiger Bacteriocine im Hinblick auf m{\"o}gliche Anwendungen im Lebensmittelbereich : Stammauswahl}, year = {1996}, language = {de} } @article{RungeDeraMatternetal.1996, author = {Runge, Heike and Dera, Yolande and Mattern, Petra-Corinna and Idler, Frank and Schwabe, Werner and Annem{\"u}ller, Gerolf}, title = {Screening of lactic acid bacteria for biological acidification of tropical fruit juices}, year = {1996}, language = {en} } @article{BroscheitBuetowGehrkeetal.1994, author = {Broscheit, Frank and B{\"u}tow, Heike and Gehrke, Albrecht and Jahn, Gert and J{\"u}rgens, Christoph and Kißner, Karl-Heinz and Klohn, Werner and Knitschky, Wolfgang and Mager, Franz-Peter and Maier, Klaus and M{\"u}hlberger, Wolfgang and M{\"u}lders, Wolfgang and Rappen-R{\"o}hlen, Beate and Reinhardt, Karl Heinz and Schmidt, Marianne and Schmidtke, Kurt-Dietmar and Volkmann, Hartmut and Wetzel, J{\"u}rgen}, title = {Seydlitz Erdkunde 1 : Ausgabe f{\"u}r Realschulen in Nordrhein-Westfalen}, publisher = {Schroedel}, address = {Hannover}, pages = {176 S.}, year = {1994}, language = {de} } @article{DrygalaWernerZoller2013, author = {Drygala, Frank and Werner, Ulrike and Zoller, Hinrich}, title = {Diet composition of the invasive raccoon dog (Nyctereutes procyonoides) and the native red fox (Vulpes vulpes) in north-east Germany}, series = {Hystrix : the Italian journal of mammalogy}, volume = {24}, journal = {Hystrix : the Italian journal of mammalogy}, number = {2}, publisher = {Associazione Teriologica Romana}, address = {Roma}, issn = {0394-1914}, doi = {10.4404/hystrix.-24.2-8867}, pages = {190 -- 194}, year = {2013}, abstract = {Invasive alien species pose a great threat to the integrity of natural communities by competition with and predation on native species. In Germany the invasive raccoon dog (Nyctereutes procyonoides) and the native red fox (Vulpes vulpes) occupy a similar ecological niche. Therefore, the aim of our study was to discover the extent of exploitative diet competition between these two generalist carnivores. Carcasses of red foxes (n=256) and raccoon dogs (n=253) were collected throughout Mecklenburg Western-Pomerania (north-east Germany) and stomachs contains were analysed. Frequency of occurrence and biomass share indicate that both canids are omnivorous and pursue opportunistic feeding strategies. Small mammals and edible plant material were the most important food resources for red foxes and raccoon dogs. Nonetheless, interspecies differences were recorded for edible plant material, small mammals and insects. While red foxes mostly feed on voles, raccoon dogs consumed mice and shrews as often as voles. Only raccoon dogs preyed on amphibians. There were no differences in carrion consumption, both species scavenged on wild boar and we found clear competition for carrion year-round. Moreover, there was evidence that two red foxes foraged on raccoon dogs and vice versa. The mean annual interspecies diet overlap index was relatively high. The diets determined for raccoon dogs and red foxes were quite similar and a similar food niche breadth was recorded. However, only minor competition is assumed to take place since differences in feeding habits do exist.}, language = {en} } @article{SchmidtWernerKellingetal.2010, author = {Schmidt, Bernd and Werner, Frank and Kelling, Alexandra and Schilde, Uwe}, title = {The reaction of 3,4-dihydro-2H-pyran with oxalyl chloride : formation and crystal structure analysis of an unexpected bicyclic product}, issn = {0022-152X}, year = {2010}, abstract = {3,4-Dihydro-2-H-pyran and oxalyl chloride react, depending on the conditions, to keto esters, a pyran-3- carboxylic acid or derivatives thereof, or to an hitherto unknown bicyclic acetal containing a vinyl chloride moiety. The structure of the latter product has been unambiguously elucidated by single-crystal X-ray structure analysis. A mechanism for its formation is proposed.}, language = {en} }