TY - JOUR A1 - Altenberger, Uwe A1 - Mejia Jimenez, D. M. A1 - Günter, C. A1 - Sierra Rodriguez, G. I. A1 - Scheffler, F. A1 - Oberhänsli, Roland T1 - The Garzn Massif, Colombia-a new ultrahigh-temperature metamorphic complex in the early Neoproterozoic of northern South America JF - Mineralogy and petrology N2 - The Garzn Complex of the Garzn Massif in SW Colombia is composed of the Vergel Granulite Unit (VG) and the Las Margaritas Migmatite Unit (LMM). Previous studies reveal peak temperature conditions for the VG of about 740 A degrees C. The present study considers the remarkable exsolution phenomena in feldspars and pyroxenes and titanium-in-quartz thermometry. Recalculated ternary feldspar compositions indicate temperatures around 900-1,000 A degrees C just at or above the ultra-high temperature-metamorphism (UHTM) boundary of granulites. The calculated temperatures range of exsolved ortho- and clinopyroxenes also supports the existence of an UHTM event. In addition, titanium-in-quartz thermometry points towards ultra-high temperatures. It is the first known UHTM crustal segment in the northern part of South America. Although a mean geothermal gradient of ca 38 A degrees C km(-1) could imply additional heat supply in the lower crust controlling this extreme of peak metamorphism, an alternative model is suggested. The formation of the Vergel Granulite Unit is supposed to be formed in a continental back-arc environment with a thinned and weakened crust behind a magmatic arc (Guapotn-Mancagua Gneiss) followed by collision. In contrast, rocks of the adjacent Las Margaritas Migmatite Unit display "normal" granulite facies temperatures and are formed in a colder lower crust outside the arc, preserved by the Guapotn-Mancagu Gneiss. Back-arc formation was followed by inversion and thickening of the basin. The three units that form the modern-day Garzn Massif, were juxtaposed upon each other during collision (at ca. 1,000 Ma) and exhumation. The collision leading to the deformation of the studied area is part of the Grenville orogeny leading to the amalgamation of Rodinia. Y1 - 2012 U6 - https://doi.org/10.1007/s00710-012-0202-1 SN - 0930-0708 VL - 105 IS - 3-4 SP - 171 EP - 185 PB - Springer CY - Wien ER - TY - JOUR A1 - Göpel, Monique A1 - Hölzle, Katharina A1 - Knyphausen-Aufsess, Dodo Zu T1 - Individuals' innovation response behaviour a framework of antecedents and opportunities for future research JF - Creativity and innovation management N2 - Innovation response behaviour is defined as individuals novelty-supporting or novelty-impeding action when navigating innovation initiatives through the organization. A typology of innovation response behaviour is developed, distinguishing between active and passive modes of conduct for novelty-supporting and novelty-impeding behaviour, respectively. The antecedents of innovation response behaviour are delineated based on West and Farr's five-factor model of individual innovation. Moreover, we argue that within organizational contexts, individuals often fail to implement their ideas due to innovation barriers, perceived as factors that are beyond their control. Based on the theory of planned behaviour, we reveal how these barriers influence individuals intentional and exhibited innovation response behaviour. Propositions about proximal and distal antecedents of individuals innovation response behaviour are derived. Proposing a research framework to study the organizational process of innovation from an actor-based perspective, this paper intends to link existing research on individual innovation with the process of innovation at the organizational level, explicitly accounting for the socio-political dynamics and arising managerial problems associated with successful innovation implementation within organizational realities. Implications for research in innovation management are discussed and avenues for future research outlined. Y1 - 2012 U6 - https://doi.org/10.1111/caim.12000 SN - 0963-1690 VL - 21 IS - 4 SP - 412 EP - 426 PB - Wiley-Blackwell CY - Hoboken ER - TY - CHAP A1 - Listek, Martin A1 - Micheel, Burkhard A1 - Heilmann, K. T1 - Insertion of artificial cell surface receptors for antigen-specific labelling of hybridoma cells T2 - Immunology : an official journal of the British Society for Immunology Y1 - 2012 SN - 0019-2805 VL - 137 SP - 651 EP - 651 PB - Wiley-Blackwell CY - Hoboken ER - TY - JOUR A1 - Borchardt, Sven A1 - Trauth, Martin H. T1 - Remotely-sensed evapotranspiration estimates for an improved hydrological modeling of the early holocene mega-lake Suguta, northern Kenya Rift JF - Palaeogeography, palaeoclimatology, palaeoecology : an international journal for the geo-sciences N2 - The actual evapotranspiration is an important, but difficult to determine, element in the water balance of lakes and their catchment areas. Reliable data on evapotranspiration are not available for most lake basins for which paleoclimate reconstructions and modeling have been performed, particularly those in remote parts of Africa. We have used thermal infrared multispectral data for 14 ASTER scenes from the TERRA satellite to estimate the actual evapotranspiration in the 12,800 km(2) catchment of the Suguta Valley, northern Kenya Rift Evidence from sediments and paleo-shorelines indicates that, during the African Humid Period (AHP, 14.8 to 5.5 kyrs BP), this valley contained a large lake, 280 m deep and covering similar to 2200 km(2), which has now virtually disappeared. Evapotranspiration estimates for the Suguta Basin were generated using the Surface Energy Balance Algorithm for Land (SEBAL). Climate data required for the model were extracted from a high-resolution gridded dataset obtained from the Climatic Research Unit (East Anglia, UK). Results suggest significant spatial variations in evapotranspiration within the catchment area (ranging from 450 mm/yr in the basin to the north to 2000 mm/yr in more elevated areas) and precipitation that was similar to 20% higher during the AHP than in recent times. These results are in agreement with other estimates of paleo-precipitation in East Africa. The extreme response of the lake system (similar to 280 m greater water depth than today, and a lake surface area of 2200 km(2)) to only moderately higher precipitation illustrates the possible sensitivity of this area to future climate change. KW - Actual evapotranspiration KW - Remote sensing KW - Water balance model KW - East African Rift KW - Kenya KW - SEBAL Y1 - 2021 U6 - https://doi.org/10.1016/j.palaeo.2012.07.009 SN - 0031-0182 VL - 361 IS - 22 SP - 14 EP - 20 PB - Elsevier CY - Amsterdam ER - TY - GEN A1 - Morris, Penelope J. A1 - Salt, Carina A1 - Raila, Jens A1 - Brenten, Thomas A1 - Kohn, Barbara A1 - Schweigert, Florian J. A1 - Zentek, Jürgen T1 - Safety evaluation of vitamin A in growing dogs T2 - Potsprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - The safe upper limit for inclusion of vitamin A in complete diets for growing dogs is uncertain, with the result that current recommendations range from 5.24 to 104.80 mu mol retinol (5000 to 100 000 IU vitamin A)/4184 kJ (1000 kcal) metabolisable energy (ME). The aim of the present study was to determine the effect of feeding four concentrations of vitamin A to puppies from weaning until 1 year of age. A total of forty-nine puppies, of two breeds, Labrador Retriever and Miniature Schnauzer, were randomly assigned to one of four treatment groups. Following weaning at 8 weeks of age, puppies were fed a complete food supplemented with retinyl acetate diluted in vegetable oil and fed at 1ml oil/100 g diet to achieve an intake of 5.24, 13.10, 78.60 and 104.80 mu mol retinol (5000, 12 500, 75 000 and 100 000 IU vitamin A)/4184 kJ (1000 kcal) ME. Fasted blood and urine samples were collected at 8, 10, 12, 14, 16, 20, 26, 36 and 52 weeks of age and analysed for markers of vitamin A metabolism and markers of safety including haematological and biochemical variables, bone-specific alkaline phosphatase, cross-linked carboxyterminal telopeptides of type I collagen and dual-energy X-ray absorptiometry. Clinical examinations were conducted every 4 weeks. Data were analysed by means of a mixed model analysis with Bonferroni corrections for multiple endpoints. There was no effect of vitamin A concentration on any of the parameters, with the exception of total serum retinyl esters, and no effect of dose on the number, type and duration of adverse events. We therefore propose that 104.80 mu mol retinol (100 000 IU vitamin A)/4184 kJ (1000 kcal) is a suitable safe upper limit for use in the formulation of diets designed for puppy growth. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 686 KW - puppies KW - dogs KW - Retinol KW - Retinyl esters KW - vitamin A Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-414929 IS - 686 ER - TY - GEN A1 - Caliendo, Marco A1 - Hogenacker, Jens T1 - The German labor market after the Great Recession BT - successful reforms and future challenges T2 - Postprints der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe N2 - The reaction of the German labor market to the Great Recession 2008/09 was relatively mild – especially compared to other countries. The reason lies not only in the specific type of the recession – which was favorable for the German economy structure – but also in a series of labor market reforms initiated between 2002 and 2005 altering, inter alia, labor supply incentives. However, irrespective of the mild response to the Great Recession, there are a number of substantial future challenges the German labor market will soon have to face. Female labor supply still lies well below that of other countries and a massive demographic change over the next 50 years will have substantial effects on labor supply as well as the pension system. In addition, due to a skill-biased technological change over the next decades, firms will face problems of finding employees with adequate skills. The aim of this paper is threefold. First, we outline why the German labor market reacted in such a mild fashion, describe current economic trends of the labor market in light of general trends in the European Union, and reveal some of the main associated challenges. Thereafter, the paper analyzes recent reforms of the main institutional settings of the labor market which influence labor supply. Finally, based on the status quo of these institutional settings, the paper gives a brief overview of strategies to combat adequately the challenges in terms of labor supply and to ensure economic growth in the future. T3 - Zweitveröffentlichungen der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe - 129 KW - unemployment KW - labor force participation KW - Labor supply KW - benefit systems KW - public policy Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-435195 SN - 1867-5808 IS - 129 ER - TY - INPR A1 - Laubrock, Jochen A1 - Hohenstein, Sven T1 - Orthographic consistency and parafoveal preview benefit: A resource-sharing account of language differences in processing of phonological and semantic codes T2 - Behavioral and brain sciences : an international journal of current research and theory with open peer commentary N2 - Parafoveal preview benefit (PB) is an implicit measure of lexical activation in reading. PB has been demonstrated for orthographic and phonological but not for semantically related information in English. In contrast, semantic PB is obtained in German and Chinese. We propose that these language differences reveal differential resource demands and timing of phonological and semantic decoding in different orthographic systems. Y1 - 2012 U6 - https://doi.org/10.1017/S0140525X12000209 SN - 0140-525X SN - 1469-1825 VL - 35 IS - 5 SP - 292 EP - 293 PB - Cambridge Univ. Press CY - New York ER - TY - GEN A1 - Adam, Jos J. A1 - Bovend'Eerdt, Thamar J. H. A1 - Dooren, Fleur E. P. van A1 - Fischer, Martin H. A1 - Pratt, Jay T1 - The closer the better BT - hand proximity dynamically affects letter recognition accuracy T2 - Postprints der Universität Potsdam : Humanwissenschaftliche Reihe N2 - A growing literature has suggested that processing of visual information presented near the hands is facilitated. In this study, we investigated whether the near-hands superiority effect also occurs with the hands moving. In two experiments, participants performed a cyclical bimanual movement task requiring concurrent visual identification of briefly presented letters. For both the static and dynamic hand conditions, the results showed improved letter recognition performance with the hands closer to the stimuli. The finding that the encoding advantage for near-hand stimuli also occurred with the hands moving suggests that the effect is regulated in real time, in accordance with the concept of a bimodal neural system that dynamically updates hand position in external space. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 607 KW - perception and action Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-432963 SN - 1866-8364 IS - 607 SP - 1533 EP - 1538 ER - TY - CHAP A1 - Neumann-Schaal, M. A1 - Messerschmidt, Katrin A1 - Grenz, N. A1 - Micheel, Burkhard A1 - Heilmann, K. T1 - Use of antibody gene library for the isolation of specific single chain antibodies by ampicillin-antigen conjugates T2 - Immunology : an official journal of the British Society for Immunology Y1 - 2012 SN - 0019-2805 VL - 137 IS - 3 SP - 661 EP - 661 PB - Wiley-Blackwell CY - Hoboken ER - TY - THES A1 - Sammler, Svenja A1 - Ketmaier, Valerio A1 - Havenstein, Katja A1 - Krause, Ulrike A1 - Curio, Eberhard A1 - Tiedemann, Ralph T1 - Mitochondrial control region I and microsatellite analyses of endangered Philippine hornbill species (Aves; Bucerotidae) detect gene flow between island populations and genetic diversity loss Y1 - 2012 UR - http://www.biomedcentral.com/content/pdf/1471-2148-12-203.pdf U6 - https://doi.org/10.1186/1471-2148-12-203 ER -