TY - JOUR A1 - Giling, Darren P. A1 - Nejstgaard, Jens C. A1 - Berger, Stella A. A1 - Grossart, Hans-Peter A1 - Kirillin, Georgiy A1 - Penske, Armin A1 - Lentz, Maren A1 - Casper, Peter A1 - Sareyka, Joerg A1 - Gessner, Mark O. T1 - Thermocline deepening boosts ecosystem metabolism: evidence from a large-scale lake enclosure experiment simulating a summer storm JF - Global change biology N2 - Extreme weather events can pervasively influence ecosystems. Observations in lakes indicate that severe storms in particular can have pronounced ecosystem-scale consequences, but the underlying mechanisms have not been rigorously assessed in experiments. One major effect of storms on lakes is the redistribution of mineral resources and plankton communities as a result of abrupt thermocline deepening. We aimed at elucidating the importance of this effect by mimicking in replicated large enclosures (each 9 m in diameter, ca. 20 m deep, ca. 1300 m 3 in volume) a mixing event caused by a severe natural storm that was previously observed in a deep clear-water lake. Metabolic rates were derived from diel changes in vertical profiles of dissolved oxygen concentrations using a Bayesian modelling approach, based on high-frequency measurements. Experimental thermocline deepening stimulated daily gross primary production (GPP) in surface waters by an average of 63% for > 4 weeks even though thermal stratification re-established within 5 days. Ecosystem respiration (ER) was tightly coupled to GPP, exceeding that in control enclosures by 53% over the same period. As GPP responded more strongly than ER, net ecosystem productivity (NEP) of the entire water column was also increased. These protracted increases in ecosystem metabolism and autotrophy were driven by a proliferation of inedible filamentous cyanobacteria released from light and nutrient limitation after they were entrained from below the thermocline into the surface water. Thus, thermocline deepening by a single severe storm can induce prolonged responses of lake ecosystem metabolism independent of other storm-induced effects, such as inputs of terrestrial materials by increased catchment run-off. This highlights that future shifts in frequency, severity or timing of storms are an important component of climate change, whose impacts on lake thermal structure will superimpose upon climate trends to influence algal dynamics and organic matter cycling in clear-water lakes. Keywords: climate variability, ecosystem productivity, extreme events, gross primary production, mesocosm, respiration stratified lakes KW - climate variability KW - ecosystem productivity KW - extreme events KW - gross primary production KW - mesocosm KW - respiration stratified lakes Y1 - 2017 U6 - https://doi.org/10.1111/gcb.13512 SN - 1354-1013 SN - 1365-2486 VL - 23 SP - 1448 EP - 1462 PB - Wiley CY - Hoboken ER - TY - JOUR A1 - Perkins, Anita K. A1 - Ganzert, Lars A1 - Rojas-Jimenez, Keilor A1 - Fonvielle, Jeremy Andre A1 - Hose, Grant C. A1 - Grossart, Hans-Peter T1 - Highly diverse fungal communities in carbon-rich aquifers of two contrasting lakes in Northeast Germany JF - Fungal ecology N2 - Fungi are an important component of microbial communities and are well known for their ability to decompose refractory, highly polymeric organic matter. In soils and aquatic systems, fungi play an important role in carbon processing, however, their diversity, community structure and function as well as ecological role, particularly in groundwater, are poorly studied. The aim of this study was to examine the fungal community composition, diversity and function in groundwater from 16 boreholes located in the vicinity of two lakes in NE Germany that are characterized by contrasting trophic status. The analysis of 28S rRNA gene sequences amplified from the groundwater revealed high fungal diversity arid clear differences in community structure between the aquifers. Most sequences were assigned to Ascomycota and Basidiomycota, but members of Chytridiomycota, Cryptomycota, Zygomycota, Blastocladiomycota, Glomeromycota and Neocallimastigomycota were also detected. In addition, 27 species of fungi were successfully isolated from the groundwater samples and tested for their ability to decompose complex organic polymers - the predominant carbon source in the groundwater. Most isolates showed positive activities for at least one of the tested polymer types, with three strains, belonging to the genera Gibberella, Isaria and Cadophora, able to decompose all tested substrates. Our results highlight the high diversity of fungi in groundwater, and point to their important ecological role in breaking down highly polymeric organic matter in these isolated microbial habitats. (C) 2019 Elsevier Ltd and British Mycological Society. All rights reserved. KW - Groundwater KW - Aquatic fungi KW - DOC KW - CDOM KW - Aquifers KW - Humic acids Y1 - 2019 U6 - https://doi.org/10.1016/j.funeco.2019.04.004 SN - 1754-5048 SN - 1878-0083 VL - 41 SP - 116 EP - 125 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Heger, Tina A1 - Bernard-Verdier, Maud A1 - Gessler, Arthur A1 - Greenwood, Alex D. A1 - Grossart, Hans-Peter A1 - Hilker, Monika A1 - Keinath, Silvia A1 - Kowarik, Ingo A1 - Küffer, Christoph A1 - Marquard, Elisabeth A1 - Mueller, Johannes A1 - Niemeier, Stephanie A1 - Onandia, Gabriela A1 - Petermann, Jana S. A1 - Rillig, Matthias C. A1 - Rodel, Mark-Oliver A1 - Saul, Wolf-Christian A1 - Schittko, Conrad A1 - Tockner, Klement A1 - Joshi, Jasmin Radha A1 - Jeschke, Jonathan M. T1 - Towards an Integrative, Eco-Evolutionary Understanding of Ecological Novelty: Studying and Communicating Interlinked Effects of Global Change JF - Bioscience N2 - Global change has complex eco-evolutionary consequences for organisms and ecosystems, but related concepts (e.g., novel ecosystems) do not cover their full range. Here we propose an umbrella concept of "ecological novelty" comprising (1) a site-specific and (2) an organism-centered, eco-evolutionary perspective. Under this umbrella, complementary options for studying and communicating effects of global change on organisms, ecosystems, and landscapes can be included in a toolbox. This allows researchers to address ecological novelty from different perspectives, e.g., by defining it based on (a) categorical or continuous measures, (b) reference conditions related to sites or organisms, and (c) types of human activities. We suggest striving for a descriptive, non-normative usage of the term "ecological novelty" in science. Normative evaluations and decisions about conservation policies or management are important, but require additional societal processes and engagement with multiple stakeholders. KW - Anthropocene KW - eco-evolutionary experience KW - global change KW - novel ecosystems KW - shifting baselines Y1 - 2019 U6 - https://doi.org/10.1093/biosci/biz095 SN - 0006-3568 SN - 1525-3244 VL - 69 IS - 11 SP - 888 EP - 899 PB - Oxford Univ. Press CY - Oxford ER - TY - JOUR A1 - Rosa, Angelika D. A1 - Pohlenz, Julia A1 - de Grouchy, C. A1 - Cochain, B. A1 - Kono, Y. A1 - Pasternak, S. A1 - Mathon, O. A1 - Irifune, Tetsuo A1 - Wilke, Max T1 - In situ characterization of liquid network structures at high pressure and temperature using X-ray absorption spectroscopy coupled with the Paris-Edinburgh press JF - High pressure research N2 - We review recent progress in studying structural properties of liquids using X-ray absorption spectroscopy coupled with the Paris-Edinburgh press at third-generation synchrotron facilities. This experimental method allows for detecting subtle changes in atomic arrangements of melts over a wide pressure-temperature range. It has been also employed to monitor variations of the local coordination environment of diluted species contained in glasses, liquids and crystalline phases as a function of the pressure and temperature. Such information is of great importance for gaining deeper insights into the physico-chemical properties of liquids at extreme condition, including the understanding of such phenomena as liquid-liquid phase transitions, viscosity drops and various transport properties of geological melts. Here, we describe the experimental approach and discuss its potential in structural characterization on selected scientific highlights. Finally, the current ongoing instrumental developments and future scientific opportunities are discussed. KW - X-ray absorption KW - Paris-Edinburgh press KW - liquid structure KW - high pressure and temperature KW - EXAFS Y1 - 2016 U6 - https://doi.org/10.1080/08957959.2016.1199693 SN - 0895-7959 SN - 1477-2299 VL - 36 SP - 332 EP - 347 PB - American Geophysical Union CY - Abingdon ER - TY - JOUR A1 - Cabieces, Roberto A1 - Olivar‐Castaño, Andrés A1 - Junqueira, Thiago C. A1 - Relinque, Jesús A1 - Fernandez-Prieto, Luis M. A1 - Vackár, Jiří A1 - Rösler, Boris A1 - Barco, Jaime A1 - Pazos, Antonio A1 - García‐Martínez, Luz T1 - Integrated Seismic Program (ISP): A new Python GUI-based software for earthquake seismology and seismic signal processing JF - Seismological research letters N2 - Integrated Seismic Program (ISP) is a graphical user interface designed to facilitate and provide a user-friendly framework for performing diverse common and advanced tasks in seismological research. ISP is composed of five main modules for earthquake location, time-frequency analysis and advanced signal processing, implementation of array techniques to estimate the slowness vector, seismic moment tensor inversion, and receiver function computation and analysis. In addition, several support tools are available, allowing the user to create an event database, download data from International Federation of Digital Seismograph Networks services, inspect the background noise, and compute synthetic seismograms. ISP is written in Python3, supported by several open-source and/or publicly available tools. Its modular design allows for new features to be added in a collaborative development environment. Y1 - 2022 U6 - https://doi.org/10.1785/0220210205 SN - 0895-0695 SN - 1938-2057 VL - 93 IS - 3 SP - 1895 EP - 1908 PB - Seismological Society of America CY - Albany ER - TY - JOUR A1 - Döbbeling-Hildebrandt, Niklas A1 - Miersch, Klaas A1 - Khanna, Tarun M. A1 - Bachelet, Marion A1 - Bruns, Stephan B. A1 - Callaghan, Max A1 - Edenhofer, Ottmar A1 - Flachsland, Christian A1 - Forster, Piers M. A1 - Kalkuhl, Matthias A1 - Koch, Nicolas A1 - Lamb, William F. A1 - Ohlendorf, Nils A1 - Steckel, Jan Christoph A1 - Minx, Jan C. T1 - Systematic review and meta-analysis of ex-post evaluations on the effectiveness of carbon pricing JF - Nature communications N2 - Today, more than 70 carbon pricing schemes have been implemented around the globe, but their contributions to emissions reductions remains a subject of heated debate in science and policy. Here we assess the effectiveness of carbon pricing in reducing emissions using a rigorous, machine-learning assisted systematic review and meta-analysis. Based on 483 effect sizes extracted from 80 causal ex-post evaluations across 21 carbon pricing schemes, we find that introducing a carbon price has yielded immediate and substantial emission reductions for at least 17 of these policies, despite the low level of prices in most instances. Statistically significant emissions reductions range between –5% to –21% across the schemes (–4% to –15% after correcting for publication bias). Our study highlights critical evidence gaps with regard to dozens of unevaluated carbon pricing schemes and the price elasticity of emissions reductions. More rigorous synthesis of carbon pricing and other climate policies is required across a range of outcomes to advance our understanding of “what works” and accelerate learning on climate solutions in science and policy. KW - carbon and energy KW - climate-change mitigation KW - climate-change policy KW - economics Y1 - 2024 U6 - https://doi.org/10.1038/s41467-024-48512-w SN - 2041-1723 VL - 15 IS - 1 PB - Springer Nature CY - London ER - TY - BOOK A1 - Schenck, Marcia C. T1 - Remembering African Labor Migration to the Second World BT - Socialist Mobilities between Angola, Mozambique, and East Germany. T3 - Palgrave Macmillan Transnational History Series N2 - This open access book is about Mozambicans and Angolans who migrated in state-sponsored schemes to East Germany in the late 1970s and throughout the 1980s. They went to work and to be trained as a vanguard labor force for the intended African industrial revolutions. While they were there, they contributed their labor power to the East German economy.  This book draws on more than 260 life history interviews and uncovers complex and contradictory experiences and transnational encounters. What emerges is a series of dualities that exist side by side in the memories of the former migrants: the state and the individual, work and consumption, integration and exclusion, loss and gain, and the past in the past and the past in the present and future. By uncovering these dualities, the book explores the lives of African migrants moving between the Third and Second worlds.  Devoted to the memories of worker-trainees, this transnational study comes at a time when historians are uncovering the many varied, complicated, and important connections within the global socialist world. KW - Open access KW - Third World KW - Second World KW - East Germany KW - Angola KW - Mozambique KW - Socialism KW - Labor Migration Y1 - 2022 SN - 978-3-031-06775-4 SN - 978-3-031-06778-5 SN - 978-3-031-06776-1 U6 - https://doi.org/10.1007/978-3-031-06776-1 SN - 2634-6273 SN - 2634-6281 PB - Palgrave Macmillan CY - Cham ER - TY - GEN A1 - Hänel, Hilkje C. T1 - The intricacies of ideology and ignorance BT - a reply to Mason T2 - Social epistemology review & reply collective : SERRC Y1 - 2021 UR - https://wp.me/p1Bfg0-62M SN - 2471-9560 VL - 10 IS - 7 SP - 58 EP - 62 PB - Social epistemology review & reply collective CY - [Erscheinungsort nicht ermittelbar] ER - TY - JOUR A1 - Barbosa, Luis Romero A. A1 - Coelho, Victor Hugo R. A1 - Gusmao, Ana Claudia V. L. F. A1 - Fernandes, Lucila A. E. A1 - da Silva, Bernardo B. A1 - Galvao, Carlos de O. A1 - Caicedo, Nelson O. L. A1 - da Paz, Adriano R. A1 - Xuan, Yunqing A1 - Bertrand, Guillaume F. A1 - Melo, Davi de C. D. A1 - Montenegro, Suzana M. G. L. A1 - Oswald, Sascha A1 - Almeida, Cristiano das N. T1 - A satellite-based approach to estimating spatially distributed groundwater recharge rates in a tropical wet sedimentary region despite cloudy conditions JF - Journal of hydrology N2 - Groundwater recharge (GWR) is one of the most challenging water fluxes to estimate, as it relies on observed data that are often limited in many developing countries. This study developed an innovative water budget method using satellite products for estimating the spatially distributed GWR at monthly and annual scales in tropical wet sedimentary regions despite cloudy conditions. The distinctive features proposed in this study include the capacity to address 1) evapotranspiration estimations in tropical wet regions frequently overlaid by substantial cloud cover; and 2) seasonal root-zone water storage estimations in sedimentary regions prone to monthly variations. The method also utilises satellite-based information of the precipitation and surface runoff. The GWR was estimated and validated for the hydrologically contrasting years 2016 and 2017 over a tropical wet sedimentary region located in North-eastern Brazil, which has substantial potential for groundwater abstraction. This study showed that applying a cloud-cleaning procedure based on monthly compositions of biophysical data enables the production of a reasonable proxy for evapotranspiration able to estimate groundwater by the water budget method. The resulting GWR rates were 219 (2016) and 302 (2017) mm yr(-1), showing good correlations (CC = 0.68 to 0.83) and slight underestimations (PBIAS =-13 to-9%) when compared with the referenced estimates obtained by the water table fluctuation method for 23 monitoring wells. Sensitivity analysis shows that water storage changes account for +19% to-22% of our monthly evaluation. The satellite-based approach consistently demonstrated that the consideration of cloud-cleaned evapotranspiration and root-zone soil water storage changes are essential for a proper estimation of spatially distributed GWR in tropical wet sedimentary regions because of their weather seasonality and cloudy conditions. KW - remote sensing KW - water balance KW - groundwater recharge KW - water table KW - fluctuation KW - tropical climate KW - sedimentary aquifer Y1 - 2022 U6 - https://doi.org/10.1016/j.jhydrol.2022.127503 SN - 0022-1694 SN - 1879-2707 VL - 607 PB - Elsevier CY - Amsterdam ER - TY - INPR A1 - Asendorpf, Jens B. A1 - Conner, Mark A1 - De Fruyt, Filip A1 - De Houwer, Jan A1 - Denissen, Jaap J. A. A1 - Fiedler, Klaus A1 - Fiedler, Susann A1 - Funder, David C. A1 - Kliegl, Reinhold A1 - Nosek, Brian A. A1 - Perugini, Marco A1 - Roberts, Brent W. A1 - Schmitt, Manfred A1 - Van Aken, Marcel A. G. A1 - Weber, Hannelore A1 - Wicherts, Jelte M. T1 - Replication is more than hitting the lottery twice T2 - European journal of personality N2 - The main goal of our target article was to provide concrete recommendations for improving the replicability of research findings. Most of the comments focus on this point. In addition, a few comments were concerned with the distinction between replicability and generalizability and the role of theory in replication. We address all comments within the conceptual structure of the target article and hope to convince readers that replication in psychological science amounts to much more than hitting the lottery twice. Y1 - 2013 SN - 0890-2070 VL - 27 IS - 2 SP - 138 EP - 144 PB - Wiley-Blackwell CY - Hoboken ER - TY - JOUR A1 - Asendorpf, Jens B. A1 - Conner, Mark A1 - De Fruyt, Filip A1 - De Houwer, Jan A1 - Denissen, Jaap J. A. A1 - Fiedler, Klaus A1 - Fiedler, Susann A1 - Funder, David C. A1 - Kliegl, Reinhold A1 - Nosek, Brian A. A1 - Perugini, Marco A1 - Roberts, Brent W. A1 - Schmitt, Manfred A1 - vanAken, Marcel A. G. A1 - Weber, Hannelore A1 - Wicherts, Jelte M. T1 - Recommendations for increasing replicability in psychology JF - European journal of personality N2 - Replicability of findings is at the heart of any empirical science. The aim of this article is to move the current replicability debate in psychology towards concrete recommendations for improvement. We focus on research practices but also offer guidelines for reviewers, editors, journal management, teachers, granting institutions, and university promotion committees, highlighting some of the emerging and existing practical solutions that can facilitate implementation of these recommendations. The challenges for improving replicability in psychological science are systemic. Improvement can occur only if changes are made at many levels of practice, evaluation, and reward. KW - replicability KW - confirmation bias KW - publication bias KW - generalizability KW - research transparency Y1 - 2013 U6 - https://doi.org/10.1002/per.1919 SN - 0890-2070 VL - 27 IS - 2 SP - 108 EP - 119 PB - Wiley-Blackwell CY - Hoboken ER - TY - JOUR A1 - Lupien, Rachel L. A1 - Russell, James M. A1 - Pearson, Emma J. A1 - Castaneda, Isla S. A1 - Asrat, Asfawossen A1 - Förster, Verena A1 - Lamb, Henry F. A1 - Roberts, Helen M. A1 - Schäbitz, Frank A1 - Trauth, Martin H. A1 - Beck, Catherine C. A1 - Feibel, Craig S. A1 - Cohen, Andrew S. T1 - Orbital controls on eastern African hydroclimate in the Pleistocene JF - Scientific reports N2 - Understanding eastern African paleoclimate is critical for contextualizing early human evolution, adaptation, and dispersal, yet Pleistocene climate of this region and its governing mechanisms remain poorly understood due to the lack of long, orbitally-resolved, terrestrial paleoclimate records. Here we present leaf wax hydrogen isotope records of rainfall from paleolake sediment cores from key time windows that resolve long-term trends, variations, and high-latitude effects on tropical African precipitation. Eastern African rainfall was dominantly controlled by variations in low-latitude summer insolation during most of the early and middle Pleistocene, with little evidence that glacial-interglacial cycles impacted rainfall until the late Pleistocene. We observe the influence of high-latitude-driven climate processes emerging from the last interglacial (Marine Isotope Stage 5) to the present, an interval when glacial-interglacial cycles were strong and insolation forcing was weak. Our results demonstrate a variable response of eastern African rainfall to low-latitude insolation forcing and high-latitude-driven climate change, likely related to the relative strengths of these forcings through time and a threshold in monsoon sensitivity. We observe little difference in mean rainfall between the early, middle, and late Pleistocene, which suggests that orbitally-driven climate variations likely played a more significant role than gradual change in the relationship between early humans and their environment. Y1 - 2022 U6 - https://doi.org/10.1038/s41598-022-06826-z SN - 2045-2322 VL - 12 IS - 1 PB - Macmillan Publishers Limited CY - London ER - TY - BOOK A1 - Zhang, Shuhao A1 - Plauth, Max A1 - Eberhardt, Felix A1 - Polze, Andreas A1 - Lehmann, Jens A1 - Sejdiu, Gezim A1 - Jabeen, Hajira A1 - Servadei, Lorenzo A1 - Möstl, Christian A1 - Bär, Florian A1 - Netzeband, André A1 - Schmidt, Rainer A1 - Knigge, Marlene A1 - Hecht, Sonja A1 - Prifti, Loina A1 - Krcmar, Helmut A1 - Sapegin, Andrey A1 - Jaeger, David A1 - Cheng, Feng A1 - Meinel, Christoph A1 - Friedrich, Tobias A1 - Rothenberger, Ralf A1 - Sutton, Andrew M. A1 - Sidorova, Julia A. A1 - Lundberg, Lars A1 - Rosander, Oliver A1 - Sköld, Lars A1 - Di Varano, Igor A1 - van der Walt, Estée A1 - Eloff, Jan H. P. A1 - Fabian, Benjamin A1 - Baumann, Annika A1 - Ermakova, Tatiana A1 - Kelkel, Stefan A1 - Choudhary, Yash A1 - Cooray, Thilini A1 - Rodríguez, Jorge A1 - Medina-Pérez, Miguel Angel A1 - Trejo, Luis A. A1 - Barrera-Animas, Ari Yair A1 - Monroy-Borja, Raúl A1 - López-Cuevas, Armando A1 - Ramírez-Márquez, José Emmanuel A1 - Grohmann, Maria A1 - Niederleithinger, Ernst A1 - Podapati, Sasidhar A1 - Schmidt, Christopher A1 - Huegle, Johannes A1 - de Oliveira, Roberto C. L. A1 - Soares, Fábio Mendes A1 - van Hoorn, André A1 - Neumer, Tamas A1 - Willnecker, Felix A1 - Wilhelm, Mathias A1 - Kuster, Bernhard ED - Meinel, Christoph ED - Polze, Andreas ED - Beins, Karsten ED - Strotmann, Rolf ED - Seibold, Ulrich ED - Rödszus, Kurt ED - Müller, Jürgen T1 - HPI Future SOC Lab – Proceedings 2017 T1 - HPI Future SOC Lab – Proceedings 2017 N2 - The “HPI Future SOC Lab” is a cooperation of the Hasso Plattner Institute (HPI) and industry partners. Its mission is to enable and promote exchange and interaction between the research community and the industry partners. The HPI Future SOC Lab provides researchers with free of charge access to a complete infrastructure of state of the art hard and software. This infrastructure includes components, which might be too expensive for an ordinary research environment, such as servers with up to 64 cores and 2 TB main memory. The offerings address researchers particularly from but not limited to the areas of computer science and business information systems. Main areas of research include cloud computing, parallelization, and In-Memory technologies. This technical report presents results of research projects executed in 2017. Selected projects have presented their results on April 25th and November 15th 2017 at the Future SOC Lab Day events. N2 - Das Future SOC Lab am HPI ist eine Kooperation des Hasso-Plattner-Instituts mit verschiedenen Industriepartnern. Seine Aufgabe ist die Ermöglichung und Förderung des Austausches zwischen Forschungsgemeinschaft und Industrie. Am Lab wird interessierten Wissenschaftlern eine Infrastruktur von neuester Hard- und Software kostenfrei für Forschungszwecke zur Verfügung gestellt. Dazu zählen teilweise noch nicht am Markt verfügbare Technologien, die im normalen Hochschulbereich in der Regel nicht zu finanzieren wären, bspw. Server mit bis zu 64 Cores und 2 TB Hauptspeicher. Diese Angebote richten sich insbesondere an Wissenschaftler in den Gebieten Informatik und Wirtschaftsinformatik. Einige der Schwerpunkte sind Cloud Computing, Parallelisierung und In-Memory Technologien. In diesem Technischen Bericht werden die Ergebnisse der Forschungsprojekte des Jahres 2017 vorgestellt. Ausgewählte Projekte stellten ihre Ergebnisse am 25. April und 15. November 2017 im Rahmen der Future SOC Lab Tag Veranstaltungen vor. T3 - Technische Berichte des Hasso-Plattner-Instituts für Digital Engineering an der Universität Potsdam - 130 KW - Future SOC Lab KW - research projects KW - multicore architectures KW - In-Memory technology KW - cloud computing KW - machine learning KW - artifical intelligence KW - Future SOC Lab KW - Forschungsprojekte KW - Multicore Architekturen KW - In-Memory Technologie KW - Cloud Computing KW - maschinelles Lernen KW - Künstliche Intelligenz Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-433100 SN - 978-3-86956-475-3 SN - 1613-5652 SN - 2191-1665 IS - 130 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Hempel, Hannes A1 - Savenjie, Tom J. A1 - Stolterfoht, Martin A1 - Neu, Jens A1 - Failla, Michele A1 - Paingad, Vaisakh C. A1 - Kužel, Petr A1 - Heilweil, Edwin J. A1 - Spies, Jacob A. A1 - Schleuning, Markus A1 - Zhao, Jiashang A1 - Friedrich, Dennis A1 - Schwarzburg, Klaus A1 - Siebbeles, Laurens D. A. A1 - Dörflinger, Patrick A1 - Dyakonov, Vladimir A1 - Katoh, Ryuzi A1 - Hong, Min Ji A1 - Labram, John G. A1 - Monti, Maurizio A1 - Butler-Caddle, Edward A1 - Lloyd-Hughes, James A1 - Taheri, Mohammad M. A1 - Baxter, Jason B. A1 - Magnanelli, Timothy J. A1 - Luo, Simon A1 - Cardon, Joseph M. A1 - Ardo, Shane A1 - Unold, Thomas T1 - Predicting solar cell performance from terahertz and microwave spectroscopy JF - Advanced energy materials N2 - Mobilities and lifetimes of photogenerated charge carriers are core properties of photovoltaic materials and can both be characterized by contactless terahertz or microwave measurements. Here, the expertise from fifteen laboratories is combined to quantitatively model the current-voltage characteristics of a solar cell from such measurements. To this end, the impact of measurement conditions, alternate interpretations, and experimental inter-laboratory variations are discussed using a (Cs,FA,MA)Pb(I,Br)(3) halide perovskite thin-film as a case study. At 1 sun equivalent excitation, neither transport nor recombination is significantly affected by exciton formation or trapping. Terahertz, microwave, and photoluminescence transients for the neat material yield consistent effective lifetimes implying a resistance-free JV-curve with a potential power conversion efficiency of 24.6 %. For grainsizes above approximate to 20 nm, intra-grain charge transport is characterized by terahertz sum mobilities of approximate to 32 cm(2) V-1 s(-1). Drift-diffusion simulations indicate that these intra-grain mobilities can slightly reduce the fill factor of perovskite solar cells to 0.82, in accordance with the best-realized devices in the literature. Beyond perovskites, this work can guide a highly predictive characterization of any emerging semiconductor for photovoltaic or photoelectrochemical energy conversion. A best practice for the interpretation of terahertz and microwave measurements on photovoltaic materials is presented. KW - lifetime KW - microwaves KW - mobility KW - solar cells KW - terahertz Y1 - 2022 U6 - https://doi.org/10.1002/aenm.202102776 SN - 1614-6832 SN - 1614-6840 VL - 12 IS - 13 PB - Wiley CY - Weinheim ER - TY - JOUR A1 - Biermann, Kaija A1 - Nowak, Bianca A1 - Braun, Lea-Marie A1 - Taddicken, Monika A1 - Krämer, Nicole C. A1 - Stieglitz, Stefan T1 - Does scientific evidence sell? BT - combining manual and automated content analysis to investigate scientists’ and laypeople’s evidence practices on social media JF - Science communication N2 - Examining the dissemination of evidence on social media, we analyzed the discourse around eight visible scientists in the context of COVID-19. Using manual (N = 1,406) and automated coding (N = 42,640) on an account-based tracked Twitter/X dataset capturing scientists’ activities and eliciting reactions over six 2-week periods, we found that visible scientists’ tweets included more scientific evidence. However, public reactions contained more anecdotal evidence. Findings indicate that evidence can be a message characteristic leading to greater tweet dissemination. Implications for scientists, including explicitly incorporating scientific evidence in their communication and examining evidence in science communication research, are discussed. KW - evidence KW - public engagement KW - social media KW - COVID-19 KW - computational methods Y1 - 2024 U6 - https://doi.org/10.1177/10755470241249468 SN - 1075-5470 SN - 1552-8545 VL - 0 PB - Sage CY - Thousand Oaks, Calif. ER - TY - JOUR A1 - Kupfer, Thomas A1 - Bauer, Evan B. A1 - van Roestel, Jan A1 - Bellm, Eric C. A1 - Bildsten, Lars A1 - Fuller, Jim A1 - Prince, Thomas A. A1 - Heber, Ulrich A1 - Geier, Stephan A1 - Green, Matthew J. A1 - Kulkarni, Shrinivas R. A1 - Bloemen, Steven A1 - Laher, Russ R. A1 - Rusholme, Ben A1 - Schneider, David T1 - Discovery of a Double-detonation Thermonuclear Supernova Progenitor JF - The astrophysical journal : an international review of spectroscopy and astronomical physics ; Part 2, Letters N2 - We present the discovery of a new double-detonation progenitor system consisting of a hot subdwarf B (sdB) binary with a white dwarf companion with a P (orb) = 76.34179(2) minutes orbital period. Spectroscopic observations are consistent with an sdB star during helium core burning residing on the extreme horizontal branch. Chimera light curves are dominated by ellipsoidal deformation of the sdB star and a weak eclipse of the companion white dwarf. Combining spectroscopic and light curve fits, we find a low-mass sdB star, M (sdB) = 0.383 +/- 0.028 M (circle dot) with a massive white dwarf companion, M (WD) = 0.725 +/- 0.026 M (circle dot). From the eclipses we find a blackbody temperature for the white dwarf of 26,800 K resulting in a cooling age of approximate to 25 Myr whereas our MESA model predicts an sdB age of approximate to 170 Myr. We conclude that the sdB formed first through stable mass transfer followed by a common envelope which led to the formation of the white dwarf companion approximate to 25 Myr ago. Using the MESA stellar evolutionary code we find that the sdB star will start mass transfer in approximate to 6 Myr and in approximate to 60 Myr the white dwarf will reach a total mass of 0.92 M (circle dot) with a thick helium layer of 0.17 M (circle dot). This will lead to a detonation that will likely destroy the white dwarf in a peculiar thermonuclear supernova. PTF1 J2238+7430 is only the second confirmed candidate for a double-detonation thermonuclear supernova. Using both systems we estimate that at least approximate to 1% of white dwarf thermonuclear supernovae originate from sdB+WD binaries with thick helium layers, consistent with the small number of observed peculiar thermonuclear explosions. Y1 - 2022 U6 - https://doi.org/10.3847/2041-8213/ac48f1 SN - 2041-8205 SN - 2041-8213 VL - 925 IS - 2 PB - IOP Publ. Ltd. CY - Bristol ER - TY - GEN A1 - Saidi, Karim A1 - Zouhal, Hassane A1 - Rhibi, Fatma A1 - Tijani, Jed M. A1 - Boullosa, Daniel A1 - Chebbi, Amel A1 - Hackney, Anthony C. A1 - Granacher, Urs A1 - Bideau, Benoit A1 - Ben Abderrahman, Abderraouf T1 - Effects of a six-week period of congested match play on plasma volume variations, hematological parameters, training workload and physical fitness in elite soccer players T2 - Postprints der Universität Potsdam Humanwissenschaftliche Reihe N2 - Objectives The aims of this study were to investigate the effects of a six-week in-season period of soccer training and games (congested period) on plasma volume variations (PV), hematological parameters, and physical fitness in elite players. In addition, we analyzed relationships between training load, hematological parameters and players’ physical fitness. Methods Eighteen elite players were evaluated before (T1) and after (T2) a six-week in-season period interspersed with 10 soccer matches. At T1 and T2, players performed the Yo-Yo intermittent recovery test level 1 (YYIR1), the repeated shuttle sprint ability test (RSSA), the countermovement jump test (CMJ), and the squat jump test (SJ). In addition, PV and hematological parameters (erythrocytes [M/mm3], hematocrit [%], hemoglobin [g/dl], mean corpuscular volume [fl], mean corpuscular hemoglobin content [pg], and mean hemoglobin concentration [%]) were assessed. Daily ratings of perceived exertion (RPE) were monitored in order to quantify the internal training load. Results From T1 to T2, significant performance declines were found for the YYIR1 (p<0.001, effect size [ES] = 0.5), RSSA (p<0.01, ES = 0.6) and SJ tests (p< 0.046, ES = 0.7). However, no significant changes were found for the CMJ (p = 0.86, ES = 0.1). Post-exercise, RSSA blood lactate (p<0.012, ES = 0.2) and PV (p<0.01, ES = 0.7) increased significantly from T1 to T2. A significant decrease was found from T1 to T2 for the erythrocyte value (p<0.002, ES = 0.5) and the hemoglobin concentration (p<0.018, ES = 0.8). The hematocrit percentage rate was also significantly lower (p<0.001, ES = 0.6) at T2. The mean corpuscular volume, mean corpuscular hemoglobin content and the mean hemoglobin content values were not statistically different from T1 to T2. No significant relationships were detected between training load parameters and percentage changes of hematological parameters. However, a significant relationship was observed between training load and changes in RSSA performance (r = -0.60; p<0.003). Conclusions An intensive period of “congested match play” over 6 weeks significantly compromised players’ physical fitness. These changes were not related to hematological parameters, even though significant alterations were detected for selected measures. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 572 KW - body density KW - performance KW - exercise KW - blood KW - hematocrit KW - responses KW - physiology KW - schedule KW - recovery KW - fatigue Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-437166 SN - 1866-8364 IS - 572 ER - TY - JOUR A1 - Saidi, Karim A1 - Zouhal, Hassane A1 - Rhibi, Fatma A1 - Tijani, Jed M. A1 - Boullosa, Daniel A1 - Chebbi, Amel A1 - Hackney, Anthony C. A1 - Granacher, Urs A1 - Bideau, Benoit A1 - Ben Abderrahman, Abderraouf T1 - Effects of a six-week period of congested match play on plasma volume variations, hematological parameters, training workload and physical fitness in elite soccer players JF - PLOS ONE N2 - Objectives The aims of this study were to investigate the effects of a six-week in-season period of soccer training and games (congested period) on plasma volume variations (PV), hematological parameters, and physical fitness in elite players. In addition, we analyzed relationships between training load, hematological parameters and players’ physical fitness. Methods Eighteen elite players were evaluated before (T1) and after (T2) a six-week in-season period interspersed with 10 soccer matches. At T1 and T2, players performed the Yo-Yo intermittent recovery test level 1 (YYIR1), the repeated shuttle sprint ability test (RSSA), the countermovement jump test (CMJ), and the squat jump test (SJ). In addition, PV and hematological parameters (erythrocytes [M/mm3], hematocrit [%], hemoglobin [g/dl], mean corpuscular volume [fl], mean corpuscular hemoglobin content [pg], and mean hemoglobin concentration [%]) were assessed. Daily ratings of perceived exertion (RPE) were monitored in order to quantify the internal training load. Results From T1 to T2, significant performance declines were found for the YYIR1 (p<0.001, effect size [ES] = 0.5), RSSA (p<0.01, ES = 0.6) and SJ tests (p< 0.046, ES = 0.7). However, no significant changes were found for the CMJ (p = 0.86, ES = 0.1). Post-exercise, RSSA blood lactate (p<0.012, ES = 0.2) and PV (p<0.01, ES = 0.7) increased significantly from T1 to T2. A significant decrease was found from T1 to T2 for the erythrocyte value (p<0.002, ES = 0.5) and the hemoglobin concentration (p<0.018, ES = 0.8). The hematocrit percentage rate was also significantly lower (p<0.001, ES = 0.6) at T2. The mean corpuscular volume, mean corpuscular hemoglobin content and the mean hemoglobin content values were not statistically different from T1 to T2. No significant relationships were detected between training load parameters and percentage changes of hematological parameters. However, a significant relationship was observed between training load and changes in RSSA performance (r = -0.60; p<0.003). Conclusions An intensive period of “congested match play” over 6 weeks significantly compromised players’ physical fitness. These changes were not related to hematological parameters, even though significant alterations were detected for selected measures. KW - body density KW - performance KW - exercise KW - blood KW - hematocrit KW - responses KW - physiology KW - schedule KW - recovery KW - fatigue Y1 - 2019 U6 - https://doi.org/10.1371/journal.pone.0219692 SN - 1932-6203 VL - 14 IS - 7 PB - Public Library of Science CY - San Francisco ER - TY - JOUR A1 - Iurchuk, V. A1 - Schick, D. A1 - Bran, J. A1 - Colson, D. A1 - Forget, A. A1 - Halley, D. A1 - Koc, Azize A1 - Reinhardt, Mathias A1 - Kwamen, C. A1 - Morley, N. A. A1 - Bargheer, Matias A1 - Viret, M. A1 - Gumeniuk, R. A1 - Schmerber, G. A1 - Doudin, B. A1 - Kundys, B. T1 - Optical Writing of Magnetic Properties by Remanent Photostriction JF - Physical review letters N2 - We present an optically induced remanent photostriction in BiFeO3, resulting from the photovoltaic effect, which is used to modify the ferromagnetism of Ni film in a hybrid BiFeO3/Ni structure. The 75% change in coercivity in the Ni film is achieved via optical and nonvolatile control. This photoferromagnetic effect can be reversed by static or ac electric depolarization of BiFeO3. Hence, the strain dependent changes in magnetic properties are written optically, and erased electrically. Light-mediated straintronics is therefore a possible approach for low-power multistate control of magnetic elements relevant for memory and spintronic applications. Y1 - 2016 U6 - https://doi.org/10.1103/PhysRevLett.117.107403 SN - 0031-9007 SN - 1079-7114 VL - 117 PB - American Physical Society CY - College Park ER - TY - JOUR A1 - Ronquillo, Cecinio C. A1 - Hanke-Gogokhia, Christin A1 - Revelo, Monica P. A1 - Frederick, Jeanne M. A1 - Jiang, Li A1 - Baehr, Wolfgang T1 - Ciliopathy-associated IQCB1/NPHP5 protein is required for mouse photoreceptor outer segment formation JF - The FASEB journal : the official journal of the Federation of American Societies for Experimental Biology N2 - Null mutations in the human IQCB1/NPHP5 (nephrocystin-5) gene that encodes NPHP5 are the most frequent cause of Senior-LOken syndrome, a ciliopathy that is characterized by Leber congenital amaurosis and nephronophthisis. We generated germline Nphp5-knockout mice by placing a -Geo gene trap in intron 4, thereby truncating NPHP5 at Leu87 and removing all known functional domains. At eye opening, Nphp5(-/-) mice exhibited absence of scotopic and photopic electroretinogram responses, a phenotype that resembles Leber congenital amaurosis. Outer segment transmembrane protein accumulation in Nphp5(-/-) endoplasmic reticulum was evident as early as postnatal day (P)6. EGFP-CETN2, a centrosome and transition zone marker, identified basal bodies in Nphp5(-/-) photoreceptors, but without fully developed transition zones. Ultrastructure of P6 and 10 Nphp5(-/-) photoreceptors revealed aberrant transition zones of reduced diameter. Nphp5(-/-) photoreceptor degeneration was complete at 1 mo of age but was delayed significantly in Nphp5(-/-);Nrl(-/-) (cone only) retina. Nphp5(-/-) mouse embryonic fibroblast developed normal cilia, and Nphp5(-/-) kidney histology at 1 yr of age showed no significant pathology. Results establish that nephrocystin-5 is essential for photoreceptor outer segment formation but is dispensable for kidney and mouse embryonic fibroblast ciliary formation. KW - Senior-LOken syndrome KW - nephronophthisis KW - Leber congenital amaurosis KW - nephrocystins Y1 - 2016 U6 - https://doi.org/10.1096/fj.201600511R SN - 0892-6638 SN - 1530-6860 VL - 30 SP - 3400 EP - 3412 PB - Federation of American Societies for Experimental Biology CY - Bethesda ER - TY - JOUR A1 - Blanchard, Ingrid A1 - Petitgirard, Sylvain A1 - Laurenz, Vera A1 - Miyajima, Nobuyoshi A1 - Wilke, Max A1 - Rubie, David C. A1 - Lobanov, Sergey S. A1 - Hennet, Louis A1 - Morgenroth, Wolfgang A1 - Tucoulou, Rémi A1 - Bonino, Valentina A1 - Zhao, Xuchao A1 - Franchi, Ian T1 - Chemical analysis of trace elements at the nanoscale in samples recovered from laser-heated diamond anvil cell experiments JF - Physics and chemistry of minerals N2 - High pressure and high temperature experiments performed with laser-heated diamond anvil cells (LH-DAC) are being extensively used in geosciences to study matter at conditions prevailing in planetary interiors. Due to the size of the apparatus itself, the samples that are produced are extremely small, on the order of few tens of micrometers. There are several ways to analyze the samples and extract physical, chemical or structural information, using either in situ or ex situ methods. In this paper, we compare two nanoprobe techniques, namely nano-XRF and NanoSIMS, that can be used to analyze recovered samples synthetized in a LH-DAC. With these techniques, it is possible to extract the spatial distribution of chemical elements in the samples. We show the results for several standards and discuss the importance of proper calibration for the acquisition of quantifiable results. We used these two nanoprobe techniques to retrieve elemental ratios of dilute species (few tens of ppm) in quenched experimental molten samples relevant for the formation of the iron-rich core of the Earth. We finally discuss the applications of such probes to constrain the partitioning of trace elements between metal and silicate phases, with a focus on moderately siderophile elements, tungsten and molybdenum. KW - NanoSIMS KW - Nano-XRF KW - Diamond anvil cell KW - Focused ion beam Y1 - 2022 U6 - https://doi.org/10.1007/s00269-022-01193-7 SN - 0342-1791 SN - 1432-2021 VL - 49 IS - 6 PB - Springer CY - New York ER - TY - CHAP A1 - Hiort, Pauline A1 - Hugo, Julian A1 - Zeinert, Justus A1 - Müller, Nataniel A1 - Kashyap, Spoorthi A1 - Rajapakse, Jagath C. A1 - Azuaje, Francisco A1 - Renard, Bernhard Y. A1 - Baum, Katharina T1 - DrDimont: explainable drug response prediction from differential analysis of multi-omics networks T2 - Bioinformatics N2 - Motivation: While it has been well established that drugs affect and help patients differently, personalized drug response predictions remain challenging. Solutions based on single omics measurements have been proposed, and networks provide means to incorporate molecular interactions into reasoning. However, how to integrate the wealth of information contained in multiple omics layers still poses a complex problem. Results: We present DrDimont, Drug response prediction from Differential analysis of multi-omics networks. It allows for comparative conclusions between two conditions and translates them into differential drug response predictions. DrDimont focuses on molecular interactions. It establishes condition-specific networks from correlation within an omics layer that are then reduced and combined into heterogeneous, multi-omics molecular networks. A novel semi-local, path-based integration step ensures integrative conclusions. Differential predictions are derived from comparing the condition-specific integrated networks. DrDimont's predictions are explainable, i.e. molecular differences that are the source of high differential drug scores can be retrieved. We predict differential drug response in breast cancer using transcriptomics, proteomics, phosphosite and metabolomics measurements and contrast estrogen receptor positive and receptor negative patients. DrDimont performs better than drug prediction based on differential protein expression or PageRank when evaluating it on ground truth data from cancer cell lines. We find proteomic and phosphosite layers to carry most information for distinguishing drug response. Y1 - 2022 U6 - https://doi.org/10.1093/bioinformatics/btac477 SN - 1367-4803 SN - 1367-4811 VL - 38 SP - ii113 EP - ii119 PB - Oxford Univ. Press CY - Oxford ER - TY - JOUR A1 - Sariati, Dorsaf A1 - Zouhal, Hassane A1 - Hammami, Raouf A1 - Clark, Cain Craig Truman A1 - Nebigh, Ammar A1 - Chtara, Moktar A1 - Hackney, Anthony C. A1 - Souissi, Nizar A1 - Granacher, Urs A1 - Ben Ounis, Omar T1 - Association between mental imagery and change of direction performance in young elite soccer players of different maturity status JF - Frontiers in Psychology N2 - Previous studies have not considered the potential influence of maturity status on the relationship between mental imagery and change of direction (CoD) speed in youth soccer. Accordingly, this cross-sectional study examined the association between mental imagery and CoD performance in young elite soccer players of different maturity status. Forty young male soccer players, aged 10-17 years, were assigned into two groups according to their predicted age at peak height velocity (PHV) (Pre-PHV; n = 20 and Post-PHV; n = 20). Participants were evaluated on soccer-specific tests of CoD with (CoDBall-15m) and without (CoD-15m) the ball. Participants completed the movement imagery questionnaire (MIQ) with the three- dimensional structure, internal visual imagery (IVI), external visual imagery (EVI), as well as kinesthetic imagery (KI). The Post-PHV players achieved significantly better results than Pre-PHV in EVI (ES = 1.58, large; p < 0.001), CoD-15m (ES = 2.09, very large; p < 0.001) and CoDBall-15m (ES = 1.60, large; p < 0.001). Correlations were significantly different between maturity groups, where, for the pre-PHV group, a negative very large correlation was observed between CoDBall-15m and KI (r = –0.73, p = 0.001). For the post-PHV group, large negative correlations were observed between CoD-15m and IVI (r = –0.55, p = 0.011), EVI (r = –062, p = 0.003), and KI (r = –0.52, p = 0.020). A large negative correlation of CoDBall-15m with EVI (r = –0.55, p = 0.012) and very large correlation with KI (r = –0.79, p = 0.001) were also observed. This study provides evidence of the theoretical and practical use for the CoD tasks stimulus with imagery. We recommend that sport psychology specialists, coaches, and athletes integrated imagery for CoD tasks in pre-pubertal soccer players to further improve CoD related performance. KW - mental imagery KW - football KW - maturation KW - speed KW - adolescents Y1 - 2021 U6 - https://doi.org/10.3389/fpsyg.2021.665508 SN - 1664-1078 VL - 12 PB - Frontiers Research Foundation CY - Lausanne ER - TY - JOUR A1 - Heckenbach, Esther Lina A1 - Brune, Sascha A1 - Glerum, Anne C. A1 - Bott, Judith T1 - Is there a speed limit for the thermal steady-state assumption in continental rifts? JF - Geochemistry, geophysics, geosystems : G 3 ; an electronic journal of the earth sciences N2 - The lithosphere is often assumed to reside in a thermal steady-state when quantitatively describing the temperature distribution in continental interiors and sedimentary basins, but also at active plate boundaries. Here, we investigate the applicability limit of this assumption at slowly deforming continental rifts. To this aim, we assess the tectonic thermal imprint in numerical experiments that cover a range of realistic rift configurations. For each model scenario, the deviation from thermal equilibrium is evaluated. This is done by comparing the transient temperature field of every model to a corresponding steady-state model with an identical structural configuration. We find that the validity of the thermal steady-state assumption strongly depends on rift type, divergence velocity, sampling location, and depth within the rift. Maximum differences between transient and steady-state models occur in narrow rifts, at the rift sides, and if the extension rate exceeds 0.5-2 mm/a. Wide rifts, however, reside close to thermal steady-state even for high extension velocities. The transient imprint of rifting appears to be overall negligible for shallow isotherms with a temperature less than 100 degrees C. Contrarily, a steady-state treatment of deep crustal isotherms leads to an underestimation of crustal temperatures, especially for narrow rift settings. Thus, not only relatively fast rifts like the Gulf of Corinth, Red Sea, and Main Ethiopian Rift, but even slow rifts like the Kenya Rift, Rhine Graben, and Rio Grande Rift must be expected to feature a pronounced transient component in the temperature field and to therefore violate the thermal steady-state assumption for deeper crustal isotherms. KW - basin analysis KW - geodynamics KW - numerical modeling KW - rifting KW - thermal KW - modeling Y1 - 2021 U6 - https://doi.org/10.1029/2020GC009577 SN - 1525-2027 VL - 22 IS - 3 PB - Wiley CY - Hoboken, NJ ER - TY - JOUR A1 - Kasmi, Sofien A1 - Zouhal, Hassane A1 - Hammami, Raouf A1 - Clark, Cain Craig Truman A1 - Hackney, Anthony C. A1 - Hammami, Amri A1 - Chtara, Moktar A1 - Chortane, Sabri Gaied A1 - Ben Salah, Fatma Zohra A1 - Granacher, Urs A1 - Ben Ounis, Omar T1 - The effects of eccentric and plyometric training programs and their combination on stability and the functional performance in the post-ACL-surgical rehabilitation period of elite female athletes JF - Frontiers in physiology N2 - Background: The standard method to treat physically active patients with anterior cruciate ligament (ACL) rupture is ligament reconstruction surgery. The rehabilitation training program is very important to improve functional performance in recreational athletes following ACL reconstruction. Objectives: The aims of this study were to compare the effects of three different training programs, eccentric training (ECC), plyometric training (PLYO), or combined eccentric and plyometric training (COMB), on dynamic balance (Y-BAL), the Lysholm Knee Scale (LKS), the return to sport index (RSI), and the leg symmetry index (LSI) for the single leg hop test for distance in elite female athletes after ACL surgery. Materials and Methods: Fourteen weeks after rehabilitation from surgery, 40 elite female athletes (20.3 ± 3.2 years), who had undergone an ACL reconstruction, participated in a short-term (6 weeks; two times a week) training study. All participants received the same rehabilitation protocol prior to the training study. Athletes were randomly assigned to three experimental groups, ECC (n = 10), PLYO (n = 10), and COMB (n = 10), and to a control group (CON: n = 10). Testing was conducted before and after the 6-week training programs and included the Y-BAL, LKS, and RSI. LSI was assessed after the 6-week training programs only. Results: Adherence rate was 100% across all groups and no training or test-related injuries were reported. No significant between-group baseline differences (pre-6-week training) were observed for any of the parameters. Significant group-by-time interactions were found for Y-BAL (p < 0.001, ES = 1.73), LKS (p < 0.001, ES = 0.76), and RSI (p < 0.001, ES = 1.39). Contrast analysis demonstrated that COMB yielded significantly greater improvements in Y-BAL, LKS, and RSI (all p < 0.001), in addition to significantly better performances in LSI (all p < 0.001), than CON, PLYO, and ECC, respectively. Conclusion: In conclusion, combined (eccentric/plyometric) training seems to represent the most effective training method as it exerts positive effects on both stability and functional performance in the post-ACL-surgical rehabilitation period of elite female athletes. KW - return-to-sport KW - anterior cruciate ligament KW - eccentric-plyometric KW - training KW - stability KW - functional performance Y1 - 2021 U6 - https://doi.org/10.3389/fphys.2021.688385 SN - 1664-042X VL - 12 PB - Frontiers Research Foundation CY - Lausanne ER - TY - JOUR A1 - Malchow, Anne-Kathleen A1 - Bocedi, Greta A1 - Palmer, Stephen C. F. A1 - Travis, Justin M. J. A1 - Zurell, Damaris T1 - RangeShiftR: an R package for individual-based simulation of spatial eco-evolutionary dynamics and speciesu0027 responses to environmental changes JF - Ecography N2 - Reliably modelling the demographic and distributional responses of a species to environmental changes can be crucial for successful conservation and management planning. Process-based models have the potential to achieve this goal, but so far they remain underused for predictions of species' distributions. Individual-based models offer the additional capability to model inter-individual variation and evolutionary dynamics and thus capture adaptive responses to environmental change. We present RangeShiftR, an R implementation of a flexible individual-based modelling platform which simulates eco-evolutionary dynamics in a spatially explicit way. The package provides flexible and fast simulations by making the software RangeShifter available for the widely used statistical programming platform R. The package features additional auxiliary functions to support model specification and analysis of results. We provide an outline of the package's functionality, describe the underlying model structure with its main components and present a short example. RangeShiftR offers substantial model complexity, especially for the demographic and dispersal processes. It comes with elaborate tutorials and comprehensive documentation to facilitate learning the software and provide help at all levels. As the core code is implemented in C++, the computations are fast. The complete source code is published under a public licence, making adaptations and contributions feasible. The RangeShiftR package facilitates the application of individual-based and mechanistic modelling to eco-evolutionary questions by operating a flexible and powerful simulation model from R. It allows effortless interoperation with existing packages to create streamlined workflows that can include data preparation, integrated model specification and results analysis. Moreover, the implementation in R strengthens the potential for coupling RangeShiftR with other models. KW - connectivity KW - conservation KW - dispersal KW - evolution KW - population dynamics KW - range dynamics Y1 - 2021 U6 - https://doi.org/10.1111/ecog.05689 SN - 1600-0587 VL - 44 IS - 10 PB - John Wiley & Sons, Inc. CY - New Jersey ER - TY - JOUR A1 - Arazi, Hamid A1 - Asadi, Abbas A1 - Khalkhali, Farhood A1 - Boullosa, Daniel A1 - Hackney, Anthony C. A1 - Granacher, Urs A1 - Zouhal, Hassane T1 - Association Between the Acute to Chronic Workload Ratio and Injury Occurrence in Young Male Team Soccer Players BT - A Preliminary Study JF - Frontiers in Physiology N2 - This study aimed to investigate the relationship between the acute to chronic workload ratio (ACWR), based upon participant session rating of perceived exertion (sRPE), using two models [(1) rolling averages (ACWRRA); and (2) exponentially weighted moving averages (ACWREWMA)] and the injury rate in young male team soccer players aged 17.1 ± 0.7 years during a competitive mesocycle. Twenty-two players were enrolled in this study and performed four training sessions per week with 2 days of recovery and 1 match day per week. During each training session and each weekly match, training time and sRPE were recorded. In addition, training impulse (TRIMP), monotony, and strain were subsequently calculated. The rate of injury was recorded for each soccer player over a period of 4 weeks (i.e., 28 days) using a daily questionnaire. The results showed that over the course of the study, the number of non-contact injuries was significantly higher than that for contact injuries (2.5 vs. 0.5, p = 0.01). There were also significant positive correlations between sRPE and training time (r = 0.411, p = 0.039), ACWRRA (r = 0.47, p = 0.049), and ACWREWMA (r = 0.51, p = 0.038). In addition, small-to-medium correlations were detected between ACWR and non-contact injury occurrence (ACWRRA, r = 0.31, p = 0.05; ACWREWMA, r = 0.53, p = 0.03). Explained variance (r 2) for non-contact injury was significantly greater using the ACWREWMA model (ranging between 21 and 52%) compared with ACWRRA (ranging between 17 and 39%). In conclusion, the results of this study showed that the ACWREWMA model is more sensitive than ACWRRA to identify non-contact injury occurrence in male team soccer players during a short period in the competitive season. KW - training load KW - rate of perceived exertion KW - rolling averages KW - weighted moving averages KW - football Y1 - 2020 U6 - https://doi.org/10.3389/fphys.2020.00608 SN - 1664-042X VL - 11 PB - Frontiers Research Foundation CY - Lausanne ER - TY - JOUR A1 - Abdalla, Hassan E. A1 - Adam, Remi A1 - Aharonian, Felix A. A1 - Benkhali, Faical Ait A1 - Angüner, Ekrem Oǧuzhan A1 - Arakawa, Masanori A1 - Arcaro, C A1 - Armand, Catherine A1 - Armstrong, T. A1 - Egberts, Kathrin T1 - Very high energy γ-ray emission from two blazars of unknown redshift and upper limits on their distance JF - Monthly Notices of the Royal Astronomical Society N2 - We report on the detection of very high energy (VHE; E > 100 GeV) gamma-ray emission from the BL Lac objects KUV 00311-1938 and PKS 1440-389 with the High Energy Stereoscopic System (H.E.S.S.). H.E.S.S. observations were accompanied or preceded by multiwavelength observations with Fermi/LAT, XRT and UVOT onboard the Swift satellite, and ATOM. Based on an extrapolation of the Fermi/LAT spectrum towards the VHE gamma-ray regime, we deduce a 95 per cent confidence level upper limit on the unknown redshift of KUV 00311-1938 of z < 0.98 and of PKS 1440-389 of z < 0.53. When combined with previous spectroscopy results, the redshift of KUV 00311-1938 is constrained to 0.51 <= z < 0.98 and of PKS 1440-389 to 0.14 (sic) z < 0.53. KW - BL Lacertae objects: individual KW - galaxies: high-redshift KW - gamma-rays: general KW - Resolved and unresolved sources as a function of wavelength Y1 - 2020 VL - 494 IS - 4 PB - Wiley-Blackwell CY - Oxford ER - TY - JOUR A1 - Raynaud, F A1 - Jond-Necand, C A1 - Marcilhac, Anne A1 - Fürst, Dieter Oswald A1 - Benyamin, Yves T1 - Calpain 1-gamma filamin interaction in muscle cells : a possible in situ regulation by PKC-alpha Y1 - 2006 ER - TY - JOUR A1 - Raynaud, F A1 - Jond-Necand, C A1 - Marcilhac, Anne A1 - Fürst, Dieter Oswald A1 - Benyamin, Yves T1 - Calpain 1-gamma filamin interaction in muscle cells :a possible in situ regulation by PKC-alpha Y1 - 2006 ER - TY - JOUR A1 - Yoon, S.-C. A1 - Langer, Norbert A1 - Scheithauer, S. T1 - Effects of rotation on the helium burning shell source in accreting white dwarfs N2 - We investigate the effects of rotation on the behavior of the helium-burning shell source in accreting carbon- oxygen white dwarfs, in the context of the single degenerate Chandrasekhar mass progenitor scenario for type la supernovae (SNe Ia). We model the evolution of helium-accreting white dwarfs of initially 1 M-circle dot, assuming four different constant accretion rates (2, 3, 5 and 10 x 10(-7) M-circle dot/yr). In a one-dimensional approximation, we compute the mass accretion and subsequent nuclear fusion of helium into carbon and oxygen, as well as angular momentum accretion, angular momentum transport inside the white dwarf, and rotationally induced chemical mixing. Our models show two major effects of rotation: a) The helium-burning nuclear shell source in the rotating models is much more stable than in corresponding non-rotating models - which increases the likelihood that accreting white dwarfs reach the stage of central carbon ignition. This effect is mainly due to rotationally induced mixing at the CO/He interface which widens the shell source, and due to the centrifugal force lowering the density and degeneracy at the shell source location. b) The C/O-ratio in the layers which experience helium shell burning - which may affect the energy of an SN Ia explosion - is strongly decreased by the rotationally induced mixing of a-particles into the carbon-rich layers. We discuss implications of our results for the evolution of SNe la progenitors Y1 - 2004 SN - 0004-6361 ER - TY - JOUR A1 - Clegg, Mark R. A1 - Maberly, Stephen C A1 - Jones, Roger I. T1 - Chemosensory behavioural response of freshwater phytoplanktonic flagellates Y1 - 2003 ER - TY - INPR A1 - Liperovsky, V.A. A1 - Pochotelov, O.A. A1 - Liperovskaya, E.V. A1 - Parrot, M. A1 - Meister, C.-V. A1 - Alimov, O. A. T1 - Modifications of sporadic E-layers caused by seismic activity N2 - Contents: 1 Introduction 2 Formation and destruction of sporadic E-layers 3 Temporal variations of parameters of sporadic E-layers during earthquake preparation 3.1 Temporal variations of fbEs with time-scales of a few hours 3.2 Study of fbEs variations with characteristic time-scales of 0.5-3 hours 3.3 Variations of the parameters of sporadic E-layers with characteristic time-scales of 15-45 minutes 3.4 Sporadic E-layer variations with characteristic time-scales of 2-15 minutes 4 On the spatial scales of sporadic E-layer disturbances related to seismic activity 5 Complex experimental researches of the ionosphere, electromagnetic noise and the geomagnetic field 5.1 Ionospheric and electromagnetic phenomena of the Kayraccum earthquake in 1985 5.2 Comparison of anomalies with characteristic time-scales of 2-3 hours for ionospheric E- and F-layers, and temporal behaviour of electromagnetic noise emission intensity 5.3 Night airglow emissions in the E-region before earthquakes and sporadic E-layer variations 6 Physical models of lithosphere-ionosphere links 6.1 Lithosphere-ionosphere links due to AGW 6.2 Electromagnetic models for the lithosphere-ionosphere coupling 6.3 Sporadic E-layers as current generators 7 Discussion and conclusion T3 - NLD Preprints - 49 Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-14799 ER - TY - JOUR A1 - Hasenbring, Monika Ilona A1 - Levenig, Claudia A1 - Hallner, D. A1 - Puschmann, Anne-Katrin A1 - Weiffen, A. A1 - Kleinert, Jens A1 - Belz, J. A1 - Schiltenwolf, Marcus A1 - Pfeifer, A. -C. A1 - Heidari, Jahan . A1 - Kellmann, M. A1 - Wippert, Pia-Maria T1 - Psychosoziale Risikofaktoren für chronischen Rückenschmerz in der Allgemeingesellschaft und im Leistungssport T1 - Psychosocial Risk Factors for chronic Back Pain in the General Population and in Competitive Sports BT - Von der Modellbildung zum klinischen Screening – ein Review aus dem MiSpEx-Netzwerk BT - From theory to clinical screening—a review from the MiSpEx network A Review from the MiSpEx Network JF - Manuelle Medizin N2 - Hintergrund Lumbale Ruckenschmerzen und ihre Neigung zur Chronifizierung stellen nicht nur in der Allgemeinbevolkerung, sondern auch im Leistungssport ein bedeutendes Gesundheitsproblem dar. Im Gegensatz zu Nichtathleten ist die Erforschung psychosozialer Risikofaktoren sowie von Screeningfragebogen, die moglichst fruhzeitig die Entwicklung chronischer Schmerzen erkennen und vorhersagen konnen, im Leistungssport noch in den Anfangen. Das vorliegende systematische Review gibt einen uberblick uber den Stand der Risikofaktorenforschung in beiden Feldern und untersucht die pradiktive Qualitat verschiedener Screeningfragebogen bei Nichtathleten. Methodik Die Literatursuche erfolgte zwischen Marz und Juni 2016 in den Datenbanken MEDLINE, PubMed und PsycINFO mit den Suchbegriffen psychosocial screening, low back pain, sciatica und prognosis, athletes. Eingeschlossen wurden prospektive Studien an Patienten mit lumbalen Ruckenschmerzen mit und ohne Ausstrahlung in das Bein, 18Jahre und mit einem Follow-up von mindestens 3-monatiger Dauer. Ergebnisse In das Review zu Screeninginstrumenten wurden 16Studien einbezogen. Alle waren an klinischen Stichproben der Allgemeingesellschaft durchgefuhrt worden. Zu den am haufigsten publizierten Screeningfragebogen gehoren der orebro Musculoskeletal Pain Screening Questionnaire (oMPSQ) mit einer zufriedenstellenden Fruherkennung der Wiederherstellung der Arbeitsfahigkeit sowie das STarT Back Screening Tool (SBT) mit guter Vorhersage schmerzbedingter Beeintrachtigung. Fur die Vorhersage kunftiger Schmerzen eignen sich die Risikoanalyse der Schmerzchronifizierung (RISC-R) und der Heidelberger Kurzfragebogen (HKF). Schlussfolgerungen Psychosoziale Risikofaktoren fur chronische Ruckenschmerzen, wie z.B. chronischer Stress, ungunstige Schmerzverarbeitung und depressive Stimmungslagen, werden zunehmend auch im Leistungssport erkannt. Screeninginstrumente, die sich in der Allgemeingesellschaft als hinreichend vorhersagestark erwiesen haben, werden aktuell im MiSpEx-Forschungsverbund auf ihre Eignung uberpruft. N2 - Background Lumbar back pain and the high risk of chronic complaints is not only an important health concern in the general population but also in high performance athletes. In contrast to non-athletes, there is a lack of research into psychosocial risk factors in athletes. Moreover, the development of psychosocial screening questionnaires that would be qualified to detect athletes with a high risk of chronicity is in the early stages. The purpose of this review is to give an overview of research into psychosocial risk factors in both populations and to evaluate the performance of screening instruments in non-athletes. Methods The databases MEDLINE, PubMed, and PsycINFO were searched from March to June 2016 using the keywords “psychosocial screening”, “low back pain”, “sciatica” and “prognosis”, “athletes”. We included prospective studies conducted in patients with low back pain with and without radiation to the legs, aged ≥18 years and a follow-up of at least 3 months. Results We identified 16 eligible studies, all of them conducted in samples of non-athletes. Among the most frequently published screening questionnaires, the Örebro Musculoskeletal Pain Screening Questionnaire (ÖMPSQ) demonstrated a sufficient early prediction of return to work and the STarT Back Screening Tool (SBT) revealed acceptable performance predicting pain-related impairment. The prediction of future pain was sufficient with the Risk Analysis of Back Pain Chronification (RISC-BP) and the Heidelberg Short Questionnaire (HKF). Conclusion Psychosocial risk factors of chronic back pain, such as chronic stress, depressive mood, and maladaptive pain processing are becoming increasingly more recognized in competitive sports. Screening instruments that have been shown to be predictive in the general population are currently being tested for suitability in the German MiSpEx research consortium. KW - Chronischer Rückenschmerz KW - Psychosoziale Risikofaktoren KW - Screening KW - Prognose KW - Chronic back pain KW - Psychosocial risk factors KW - Screening KW - Prognosis Y1 - 2018 U6 - https://doi.org/10.1007/s00337-018-0450-1 SN - 0025-2514 SN - 1433-0466 VL - 56 IS - 5 SP - 359 EP - 373 PB - Springer CY - Heidelberg ER - TY - JOUR A1 - Hasenbring, Monika Ilona A1 - Levenig, Claudia A1 - Hallner, D. A1 - Puschmann, Anne-Katrin A1 - Weiffen, A. A1 - Kleinert, Jens A1 - Belz, J. A1 - Schiltenwolf, Marcus A1 - Pfeifer, A. -C. A1 - Heidari, Jahan A1 - Kellmann, M. A1 - Wippert, Pia-Maria T1 - Psychosocial risk factors for chronic back pain in the general population and in competitive sports BT - from theory to clinical screening- a review fromthe MiSpEx network BT - Von der Modellbildung zum klinischen Screening – ein Review aus dem MiSpEx-Netzwerk JF - Der Schmerz : Organ der Deutschen Gesellschaft zum Studium des Schmerzes, der Österreichischen Schmerzgesellschaft und der Deutschen Interdisziplinären Vereinigung für Schmerztherapie N2 - Lumbar back pain and the high risk of chronic complaints is not only an important health concern in the general population but also in high performance athletes. In contrast to non-athletes, there is a lack of research into psychosocial risk factors in athletes. Moreover, the development of psychosocial screening questionnaires that would be qualified to detect athletes with a high risk of chronicity is in the early stages. The purpose of this review is to give an overview of research into psychosocial risk factors in both populations and to evaluate the performance of screening instruments in non-athletes. The databases MEDLINE, PubMed, and PsycINFO were searched from March to June 2016 using the keywords "psychosocial screening", "low back pain", "sciatica" and "prognosis", "athletes". We included prospective studies conducted in patients with low back pain with and without radiation to the legs, aged ae18 years and a follow-up of at least 3 months. We identified 16 eligible studies, all of them conducted in samples of non-athletes. Among the most frequently published screening questionnaires, the A-rebro Musculoskeletal Pain Screening Questionnaire (A-MPSQ) demonstrated a sufficient early prediction of return to work and the STarT Back Screening Tool (SBT) revealed acceptable performance predicting pain-related impairment. The prediction of future pain was sufficient with the Risk Analysis of Back Pain Chronification (RISC-BP) and the Heidelberg Short Questionnaire (HKF). Psychosocial risk factors of chronic back pain, such as chronic stress, depressive mood, and maladaptive pain processing are becoming increasingly more recognized in competitive sports. Screening instruments that have been shown to be predictive in the general population are currently being tested for suitability in the German MiSpEx research consortium. T2 - Psychosoziale Risikofaktoren für chronischen Rückenschmerz in der Allgemeingesellschaft und im Leistungssport KW - Chronic back pain KW - Psychosocial risk factors KW - Screening KW - Prognosis Y1 - 2018 U6 - https://doi.org/10.1007/s00482-018-0307-5 SN - 0932-433X SN - 1432-2129 VL - 32 IS - 4 SP - 259 EP - 273 PB - Springer CY - Heidelberg ER - TY - GEN A1 - Tristram, Hildegard L.C. T1 - Wie weit sind die inselkeltischen Sprachen (und das Englische) analytisiert? T1 - How far have the Insular Celtic languages (and the English language) been analyticised? N2 - Der gemeinsame Wandel der inselkeltischen Sprachen wie auch des Englischen vom vorwiegend synthetischen Typus zum vorwiegend analytischen Typus läßt sich vermutlich auf einen ca. 1500 Jahre dauernden intensiven Sprachenkontakt zwischen diesen Sprachen zurückführen. Heute ist das Englische die analytischste Sprache der Britischen Inseln und Irlands, gefolgt vom Walisischen, Bretonischen und Irischen. Letzteres ist von den genannten Sprachen noch am weitesten morphologisch komplex. N2 - I discuss the joint shift of the Insular Celtic languages and of the English language from, typologically speaking, predominantly synthetic languages c. 1500 years ago to predominantly analytical languages today. The demise of the inflectional morphology is most advanced in Present Day English. Welsh follows suit. Then come Breton and Irish. Intensive linguistic interaction across the boundaries of the Germanic and the Insular Celtic languages are proposed to have been instrumental for this type of linguistic convergence. T3 - Zweitveröffentlichungen der Universität Potsdam : Philosophische Reihe - 35 KW - Irisch KW - Walisisch KW - Bretonisch KW - Englisch KW - Sprachwandel KW - Sprachkontakt KW - Sprachkonvergenz KW - Typologie KW - Morphologie KW - Komplexität KW - Quantifizierun KW - Irish KW - Welsh KW - Breton KW - English KW - Language Change KW - Language Contact KW - Convergence KW - Morphology KW - Complexity KW - Quantification Y1 - 2009 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-41251 ER - TY - CHAP A1 - Walter, R. A1 - Zurita-Heras, J. A1 - Leyder, J.-C. T1 - Probing clumpy stellar winds with a neutron star N2 - INTEGRAL tripled the number of super-giant high-mass X-ray binaries (sgHMXB) known in the Galaxy by revealing absorbed and fast transient (SFXT) systems. Quantitative constraints on the wind clumping of massive stars can be obtained from the study of the hard X-ray variability of SFXT. A large fraction of the hard X-ray emission is emitted in the form of flares with a typical duration of 3 ksec, frequency of 7 days and luminosity of $10^{36}$ erg/s. Such flares are most probably emitted by the interaction of a compact object orbiting at $\sim10~R_*$ with wind clumps ($10^{22 ... 23}$ g) representing a large fraction of the stellar mass-loss rate. The density ratio between the clumps and the inter-clump medium is $10^{2 ... 4}$. The parameters of the clumps and of the inter-clump medium, derived from the SFXT flaring behavior, are in good agreement with macro-clumping scenario and line-driven instability simulations. SFXT are likely to have larger orbital radius than classical sgHMXB. Y1 - 2007 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-18024 ER - TY - CHAP A1 - Iping, R.C. A1 - Sonneborn, G. A1 - Massa, D.L. A1 - Gies, D. A1 - Williams, Simon E. T1 - Far-ultraviolet spectroscopy of O+O binaries in the Magellanic Clouds N2 - We report FUSE observations in 2005–2006 of three O-type, double-lined spectroscopic binaries in the Magellanic Clouds. The systems have very short periods (1.4–2.25 d), represent rare, young evolutionary stages of massive stars and binaries, and provide a unique glimpse at some of the most massive systems that form in dense clusters of massive stars. Improved orbit parameters, including revised masses, for LH54-425 are derived from new ctio spectroscopy. The systems are: LH54-425 in the LMC (O3V + O5V, P=2.25d, 62+37M⊙), J053441-693139 in the LMC (O2-3If+O6V, P=1.4 d, 41+27M⊙), and Hodge 53-47 in the SMC (O6V + O4-5IIIf, P=2.2 d, 24+14M⊙, where the O4 star appears to be less massive than the O6 star). Their short periods indicates that wind interaction and mass transfer are likely important factors in their evolution. The spectra provide quantitative and systematic studies of phase-dependent stellar wind properties, wind collision effects in O+O binaries at lower metallicities, improved radial velocity curves, and FUV spectro-photometric changes as a function of orbital phase. Y1 - 2007 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-17896 ER - TY - GEN A1 - Abdalla, Hassan E. A1 - Adam, Remi A1 - Aharonian, Felix A. A1 - Benkhali, Faical Ait A1 - Angüner, Ekrem Oǧuzhan A1 - Arakawa, Masanori A1 - Arcaro, C A1 - Armand, Catherine A1 - Armstrong, T. A1 - Egberts, Kathrin T1 - Very high energy γ-ray emission from two blazars of unknown redshift and upper limits on their distance T2 - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - We report on the detection of very high energy (VHE; E > 100 GeV) gamma-ray emission from the BL Lac objects KUV 00311-1938 and PKS 1440-389 with the High Energy Stereoscopic System (H.E.S.S.). H.E.S.S. observations were accompanied or preceded by multiwavelength observations with Fermi/LAT, XRT and UVOT onboard the Swift satellite, and ATOM. Based on an extrapolation of the Fermi/LAT spectrum towards the VHE gamma-ray regime, we deduce a 95 per cent confidence level upper limit on the unknown redshift of KUV 00311-1938 of z < 0.98 and of PKS 1440-389 of z < 0.53. When combined with previous spectroscopy results, the redshift of KUV 00311-1938 is constrained to 0.51 <= z < 0.98 and of PKS 1440-389 to 0.14 (sic) z < 0.53. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1202 KW - BL Lacertae objects: individual KW - galaxies: high-redshift KW - gamma-rays: general KW - Resolved and unresolved sources as a function of wavelength Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-526000 SN - 1866-8372 IS - 4 ER - TY - JOUR A1 - Miranda, Rodrigo A. A1 - Rempel, Erico L. A1 - Chian, Abraham C.-L. A1 - Seehafer, Norbert A1 - Toledo, Benjamin A. T1 - Lagrangian coherent structures at the onset of hyperchaos in the two-dimensional Navier-Stokes equations Y1 - 2013 UR - http://dx.doi.org/10.1063/1.4811297 ER - TY - JOUR A1 - Miranda, Rodrigo A. A1 - Rempel, Erico L. A1 - Chian, Abraham C.-L. A1 - Seehafer, Norbert A1 - Toledo, Benjamin A. A1 - Munoz, Pablo R. T1 - Lagrangian coherent structures at the onset of hyperchaos in the two-dimensional Navier-Stokes equations JF - Chaos : an interdisciplinary journal of nonlinear science N2 - We study a transition to hyperchaos in the two-dimensional incompressible Navier-Stokes equations with periodic boundary conditions and an external forcing term. Bifurcation diagrams are constructed by varying the Reynolds number, and a transition to hyperchaos (HC) is identified. Before the onset of HC, there is coexistence of two chaotic attractors and a hyperchaotic saddle. After the transition to HC, the two chaotic attractors merge with the hyperchaotic saddle, generating random switching between chaos and hyperchaos, which is responsible for intermittent bursts in the time series of energy and enstrophy. The chaotic mixing properties of the flow are characterized by detecting Lagrangian coherent structures. After the transition to HC, the flow displays complex Lagrangian patterns and an increase in the level of Lagrangian chaoticity during the bursty periods that can be predicted statistically by the hyperchaotic saddle prior to HC transition. Y1 - 2013 U6 - https://doi.org/10.1063/1.4811297 SN - 1054-1500 VL - 23 IS - 3 PB - American Institute of Physics CY - Melville ER - TY - CHAP A1 - Tristram, Hildegard L.C. T1 - On the ‘Celticity’ of Irish Newspapers : a research report N2 - Extract: [...]Of all the print-media newspapers are the most commonly used. They are not literature in the sense of belles letters, but they should not be underestimated in their political, social and personal importance. No other printed product is as closely linked with everyday life as the newspapers. The day begins under their influence, and their contents mirror the events of the day with varying accuracy. Newspapers are strongly reader-oriented. They want to inform, but they also want to instil opinions. Specific choices of information shape the content level. Specific choices of language are resorted to in order to spread opinions and viewpoints. Language creates solidarity between the producers and the consumers of newspapers and thereby supports ideologies by specifically targeted linguistic means. Other strategies are employed for the same purpose, too. Visual aspects are of great importance, such as the typographical layout, the use of pictures, drawings, colours, fonts, etc.[...] Y1 - 2007 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-19351 ER - TY - JOUR A1 - Sodoudi, Forough A1 - Yuan, Xiaohui A1 - Kind, Rainer A1 - Lebedev, Sergei A1 - Adam, Joanne M-C. A1 - Kästle, Emanuel A1 - Tilmann, Frederik T1 - Seismic evidence for stratification in composition and anisotropic fabric within the thick lithosphere of Kalahari Craton JF - Geochemistry, geophysics, geosystems N2 - Based on joint consideration of S receiver functions and surface-wave anisotropy we present evidence for the existence of a thick and layered lithosphere beneath the Kalahari Craton. Our results show that frozen-in anisotropy and compositional changes can generate sharp Mid-Lithospheric Discontinuities (MLD) at depths of 85 and 150-200 km, respectively. We found that a 50 km thick anisotropic layer, containing 3% S wave anisotropy and with a fast-velocity axis different from that in the layer beneath, can account for the first MLD at about 85 km depth. Significant correlation between the depths of an apparent boundary separating the depleted and metasomatised lithosphere, as inferred from chemical tomography, and those of our second MLD led us to characterize it as a compositional boundary, most likely due to the modification of the cratonic mantle lithosphere by magma infiltration. The deepening of this boundary from 150 to 200 km is spatially correlated with the surficial expression of the Thabazimbi-Murchison Lineament (TML), implying that the TML isolates the lithosphere of the Limpopo terrane from that of the ancient Kaapvaal terrane. The largest velocity contrast (3.6-4.7%) is observed at a boundary located at depths of 260-280 km beneath the Archean domains and the older Proterozoic belt. This boundary most likely represents the lithosphere-asthenosphere boundary, which shallows to about 200 km beneath the younger Proterozoic belt. Thus, the Kalahari lithosphere may have survived multiple episodes of intense magmatism and collisional rifting during the billions of years of its history, which left their imprint in its internal layering. KW - lithospheric layering KW - S receiver functions Y1 - 2013 U6 - https://doi.org/10.1002/2013GC004955 SN - 1525-2027 VL - 14 IS - 12 SP - 5393 EP - 5412 PB - American Geophysical Union CY - Washington ER - TY - JOUR A1 - Ciobanu, M. -C. A1 - Rabineau, M. A1 - Droz, L. A1 - Revillon, S. A1 - Ghiglione, J. -F. A1 - Dennielou, B. A1 - Jorry, S. -J. A1 - Kallmeyer, Jens A1 - Etoubleau, J. A1 - Pignet, P. A1 - Crassous, P. A1 - Vandenabeele-Trambouze, O. A1 - Laugier, J. A1 - Guegan, M. A1 - Godfroy, A. A1 - Alain, K. T1 - Sedimentological imprint on subseafloor microbial communities in Western Mediterranean Sea Quaternary sediments JF - Biogeosciences N2 - An interdisciplinary study was conducted to evaluate the relationship between geological and paleoenvironmental parameters and the bacterial and archaeal community structure of two contrasting subseafloor sites in the Western Mediterranean Sea (Ligurian Sea and Gulf of Lion). Both depositional environments in this area are well-documented from paleoclimatic and paleooceanographic point of views. Available data sets allowed us to calibrate the investigated cores with reference and dated cores previously collected in the same area, and notably correlated to Quaternary climate variations. DNA-based fingerprints showed that the archaeal diversity was composed by one group, Miscellaneous Crenarchaeotic Group (MCG), within the Gulf of Lion sediments and of nine different lineages (dominated by MCG, South African Gold Mine Euryarchaeotal Group (SAGMEG) and Halobacteria) within the Ligurian Sea sediments. Bacterial molecular diversity at both sites revealed mostly the presence of the classes Alphaproteobacteria, Betaproteobacteria and Gammaproteobacteria within Proteobacteria phylum, and also members of Bacteroidetes phylum. The second most abundant lineages were Actinobacteria and Firmicutes at the Gulf of Lion site and Chloroflexi at the Ligurian Sea site. Various substrates and cultivation conditions allowed us to isolate 75 strains belonging to four lineages: Alpha-, Gammaproteobacteria, Firmicutes and Actinobacteria. In molecular surveys, the Betaproteobacteria group was consistently detected in the Ligurian Sea sediments, characterized by a heterolithic facies with numerous turbidites from a deep-sea levee. Analysis of relative betaproteobacterial abundances and turbidite frequency suggested that the microbial diversity was a result of main climatic changes occurring during the last 20 ka. Statistical direct multivariate canonical correspondence analyses (CCA) showed that the availability of electron acceptors and the quality of electron donors (indicated by age) strongly influenced the community structure. In contrast, within the Gulf of Lion core, characterized by a homogeneous lithological structure of upper-slope environment, most detected groups were Bacteroidetes and, to a lesser extent, Betaproteobacteria. At both site, the detection of Betaproteobacteria coincided with increased terrestrial inputs, as confirmed by the geochemical measurements (Si, Sr, Ti and Ca). In the Gulf of Lion, geochemical parameters were also found to drive microbial community composition. Taken together, our data suggest that the palaeoenvironmental history of erosion and deposition recorded in the Western Mediterranean Sea sediments has left its imprint on the sedimentological context for microbial habitability, and then indirectly on structure and composition of the microbial communities during the late Quaternary. Y1 - 2012 U6 - https://doi.org/10.5194/bg-9-3491-2012 SN - 1726-4170 VL - 9 IS - 9 SP - 3491 EP - 3512 PB - Copernicus CY - Göttingen ER - TY - JOUR A1 - Langer, Norbert A1 - Yoon, S.-C A1 - Wellstein, Stephan A1 - Scheithauer, S. T1 - On the evolution of interacting binaries which contain a white dwarf N2 - We discuss the evolution of white dwarf containing binaries, in particular such systems consisting of a white dwarf and a main sequence star which have the potential to produce a Type Ia supernova. After investigating current problems in connecting observations of supersoft X-ray sources with such systems, we consider two major problems which theoretical models encounter to produce Chandrasekhar-mass white dwarfs: the helium shell burning instability and the white dwarf spin-up. We conclude by suggesting that the formation of Chandrasekhar-mass white dwarfs may be easier when these two problem are considered simultaneously. Y1 - 2002 SN - 1-58381-101-X ER - TY - JOUR A1 - Rasser, Michael W. A1 - Scheibner, C A1 - Mutti, Maria T1 - A paleoenvironmental standard section for Early Ilerdian tropical carbonate factories (Corbieres, France; Pyrenees, Spain) N2 - Early Ilerdian (Early Eocene, Shallow Benthic Zones 5 and 6) carbonate systems of the Pyrenees shelf were deposited after a time of severe climatic ('Paleocene-Eocene Thermal Maximum, PETM') and phylogenetic ('Larger Foraminifer Turnover') changes. They reflect the radiation of nummulitid, alveolinid, and orbitolitid larger foraminifera after remarkable biotic changes at the end of the Paleocene, and announce their subsequent flourishing in the Middle Eocene. A paleoenvironmental model for tropical carbonate environments of this particular time interval is provided herein. During the Early Ilerdian, the inner and middle ramp deposits from Minerve, Campo and Serraduy revealed the end-member of a tropical carbonate factory with carbonate production dominated by the end-members of biotically (photo-autotrophic skeletal) controlled and biotically induced carbonate precipitation. Inner platform environments are dominated by alveolinids and in part by orbitolitids, middle platform environments are dominated by nummulitids. Corals are present, but they do not form reefs, which is a typical feature for the Eocene. Nummulite shoal complexes, which are well-known from the Middle Eocene are also absent during the studied Early Ilerdian interval, which may reflect the early evolutionary stage of this group Y1 - 2005 ER - TY - JOUR A1 - Assagra, Yuri A.O. A1 - Altafim, Ruy Alberto Pisani A1 - do Carmo, Joao P. A1 - Altafim, Ruy A.C. A1 - Rychkov, Dmitry A1 - Wirges, Werner A1 - Gerhard, Reimund T1 - A new route to piezo-polymer transducers: 3D printing of polypropylene ferroelectrets JF - IEEE transactions on dielectrics and electrical insulation N2 - Here, a promising approach for producing piezo-polymer transducers in a one-step process is presented. Using 3D-printing technology and polypropylene (PP) filaments, we are able to print a two-layered film structure with regular cavities of precisely controlled size and shape. It is found that the 3D-printed samples exhibit piezoelectric coefficients up to 200 pC/N, similar to those of other PP ferroelectrets, and their temporal and thermal behavior is in good agreement with those known of PP ferroelectrets. The piezoelectric response strongly decreases for applied pressures above 20 kPa, as the pressure in the air-filled cavities strongly influences the overall elastic modulus of ferroelectrets. KW - 3D printing KW - polymer ferroelectrets KW - sensors and actuators KW - piezoelectrets KW - electret polymers KW - soft electro-active materials KW - functional materials KW - soft matter Y1 - 2020 U6 - https://doi.org/10.1109/TDEI.2020.008461 SN - 1070-9878 SN - 1558-4135 VL - 27 IS - 5 SP - 1668 EP - 1674 PB - Inst. of Electr. and Electronics Engineers CY - Piscataway ER - TY - INPR A1 - Martin, C.-I. A1 - Schulze, Bert-Wolfgang T1 - The quantisation of edge symbols N2 - We investigate operators on manifolds with edges from the point of view of the symbolic calculus induced by the singularities. We discuss new aspects of the quantisation of edge-degenerate symbols which lead to continuous operators in weighted edge spaces. T3 - Preprint - (2005) 19 Y1 - 2005 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-29959 ER - TY - JOUR A1 - Chang, D. -C. A1 - Viahmoudi, M. Hedayat A1 - Schulze, Bert-Wolfgang T1 - PSEUDO-DIFFERENTIAL ANALYSIS WITH TWISTED SYMBOLIC STRUCTURE JF - Journal of nonlinear and convex analysis : an international journal N2 - This paper is devoted to pseudo-differential operators and new applications. We establish necessary extensions of the standard calculus to specific classes of operator-valued symbols occurring in principal symbolic hierarchies of operators on manifolds with singularities or stratified spaces. KW - Pseudo-differential operators KW - boundary value problems KW - operator valued symbols KW - Fourier transform Y1 - 2016 SN - 1345-4773 SN - 1880-5221 VL - 17 SP - 1889 EP - 1937 PB - Yokohama Publishers CY - Yokohama ER - TY - JOUR A1 - Chang, D. -C. A1 - Schulze, Bert-Wolfgang T1 - Calculus on spaces with higher singularities JF - Journal of pseudo-differential operators and applications N2 - We establish extensions of the standard pseudo-differential calculus to specific classes of operators with operator-valued symbols occurring in symbolic hierarchies motivated by manifolds with higher singularities or stratified spaces. KW - Pseudo-differential operators KW - Operator-valued symbols KW - Fourier and Mellin transform Y1 - 2017 U6 - https://doi.org/10.1007/s11868-016-0180-x SN - 1662-9981 SN - 1662-999X VL - 8 SP - 585 EP - 622 PB - Springer CY - Basel ER -