[{"citation":{"bibtex":"@inbook{Berger_Lanza_2020, title={Observers for differential-algebraic systems with Lipschitz or monotone nonlinearities}, booktitle={Progress in Differential-Algebraic Equations II}, publisher={Springer}, author={Berger, Thomas and Lanza, Lukas Johannes}, editor={Grundel, S. and Reis, T. and Schöps, S.}, year={2020}, pages={257–289} }","mla":"Berger, Thomas, and Lukas Johannes Lanza. “Observers for Differential-Algebraic Systems with Lipschitz or Monotone Nonlinearities.” Progress in Differential-Algebraic Equations II, edited by S. Grundel et al., Springer, 2020, pp. 257–89.","chicago":"Berger, Thomas, and Lukas Johannes Lanza. “Observers for Differential-Algebraic Systems with Lipschitz or Monotone Nonlinearities.” In Progress in Differential-Algebraic Equations II, edited by S. Grundel, T. Reis, and S. Schöps, 257–89. Springer, 2020.","ama":"Berger T, Lanza LJ. Observers for differential-algebraic systems with Lipschitz or monotone nonlinearities. In: Grundel S, Reis T, Schöps S, eds. Progress in Differential-Algebraic Equations II. Springer; 2020:257-289.","apa":"Berger, T., & Lanza, L. J. (2020). Observers for differential-algebraic systems with Lipschitz or monotone nonlinearities. In S. Grundel, T. Reis, & S. Schöps (Eds.), Progress in Differential-Algebraic Equations II (pp. 257–289). Springer.","ieee":"T. Berger and L. J. Lanza, “Observers for differential-algebraic systems with Lipschitz or monotone nonlinearities,” in Progress in Differential-Algebraic Equations II, S. Grundel, T. Reis, and S. Schöps, Eds. Springer, 2020, pp. 257–289.","short":"T. Berger, L.J. Lanza, in: S. Grundel, T. Reis, S. Schöps (Eds.), Progress in Differential-Algebraic Equations II, Springer, 2020, pp. 257–289."},"type":"book_chapter","year":"2020","page":"257-289","language":[{"iso":"eng"}],"_id":"36351","date_updated":"2023-01-12T12:29:45Z","editor":[{"last_name":"Grundel","full_name":"Grundel, S.","first_name":"S."},{"last_name":"Reis","first_name":"T.","full_name":"Reis, T."},{"last_name":"Schöps","full_name":"Schöps, S.","first_name":"S."}],"status":"public","date_created":"2023-01-12T10:09:22Z","author":[{"first_name":"Thomas","full_name":"Berger, Thomas","last_name":"Berger","id":"77457"},{"last_name":"Lanza","id":"78640","first_name":"Lukas Johannes","full_name":"Lanza, Lukas Johannes"}],"publisher":"Springer","publication":"Progress in Differential-Algebraic Equations II","title":"Observers for differential-algebraic systems with Lipschitz or monotone nonlinearities","user_id":"15694"},{"date_created":"2023-01-12T10:38:25Z","status":"public","publication":"Proceedings of the European Control Confrence 2020","author":[{"first_name":"J.G.","full_name":"Lee, J.G.","last_name":"Lee"},{"full_name":"Berger, Thomas","first_name":"Thomas","id":"77457","last_name":"Berger"},{"full_name":"Trenn, S.","first_name":"S.","last_name":"Trenn"},{"first_name":"H.","full_name":"Shim, H.","last_name":"Shim"}],"title":"Utility of Edge-wise Funnel Coupling for Asymptotically Solving Distributed Consensus Optimization","user_id":"77457","page":"911-916","year":"2020","citation":{"bibtex":"@inproceedings{Lee_Berger_Trenn_Shim_2020, title={Utility of Edge-wise Funnel Coupling for Asymptotically Solving Distributed Consensus Optimization}, booktitle={Proceedings of the European Control Confrence 2020}, author={Lee, J.G. and Berger, Thomas and Trenn, S. and Shim, H.}, year={2020}, pages={911–916} }","mla":"Lee, J. G., et al. “Utility of Edge-Wise Funnel Coupling for Asymptotically Solving Distributed Consensus Optimization.” Proceedings of the European Control Confrence 2020, 2020, pp. 911–16.","chicago":"Lee, J.G., Thomas Berger, S. Trenn, and H. Shim. “Utility of Edge-Wise Funnel Coupling for Asymptotically Solving Distributed Consensus Optimization.” In Proceedings of the European Control Confrence 2020, 911–16, 2020.","apa":"Lee, J. G., Berger, T., Trenn, S., & Shim, H. (2020). Utility of Edge-wise Funnel Coupling for Asymptotically Solving Distributed Consensus Optimization. Proceedings of the European Control Confrence 2020, 911–916.","ama":"Lee JG, Berger T, Trenn S, Shim H. Utility of Edge-wise Funnel Coupling for Asymptotically Solving Distributed Consensus Optimization. In: Proceedings of the European Control Confrence 2020. ; 2020:911-916.","ieee":"J. G. Lee, T. Berger, S. Trenn, and H. Shim, “Utility of Edge-wise Funnel Coupling for Asymptotically Solving Distributed Consensus Optimization,” in Proceedings of the European Control Confrence 2020, Saint Petersburg, Russia, 2020, pp. 911–916.","short":"J.G. Lee, T. Berger, S. Trenn, H. Shim, in: Proceedings of the European Control Confrence 2020, 2020, pp. 911–916."},"type":"conference","language":[{"iso":"eng"}],"conference":{"name":"Proceedings of the European Control Confrence 2020","location":"Saint Petersburg, Russia"},"date_updated":"2023-01-12T12:29:18Z","_id":"36380"},{"author":[{"last_name":"Schapeler","id":"55629","first_name":"Timon","full_name":"Schapeler, Timon","orcid":"0000-0001-7652-1716"},{"full_name":"Höpker, Jan Philipp","first_name":"Jan Philipp","id":"33913","last_name":"Höpker"},{"first_name":"Tim","full_name":"Bartley, Tim","last_name":"Bartley","id":"49683"}],"publication":"Optics Express","department":[{"_id":"15"},{"_id":"230"}],"publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"status":"public","date_created":"2020-10-21T11:02:41Z","title":"Quantum detector tomography of a 2×2 multi-pixel array of superconducting nanowire single photon detectors","user_id":"55629","type":"journal_article","year":"2020","citation":{"apa":"Schapeler, T., Höpker, J. P., & Bartley, T. (2020). Quantum detector tomography of a 2×2 multi-pixel array of superconducting nanowire single photon detectors. Optics Express, Article 33035. https://doi.org/10.1364/oe.404285","ama":"Schapeler T, Höpker JP, Bartley T. Quantum detector tomography of a 2×2 multi-pixel array of superconducting nanowire single photon detectors. Optics Express. Published online 2020. doi:10.1364/oe.404285","chicago":"Schapeler, Timon, Jan Philipp Höpker, and Tim Bartley. “Quantum Detector Tomography of a 2×2 Multi-Pixel Array of Superconducting Nanowire Single Photon Detectors.” Optics Express, 2020. https://doi.org/10.1364/oe.404285.","bibtex":"@article{Schapeler_Höpker_Bartley_2020, title={Quantum detector tomography of a 2×2 multi-pixel array of superconducting nanowire single photon detectors}, DOI={10.1364/oe.404285}, number={33035}, journal={Optics Express}, author={Schapeler, Timon and Höpker, Jan Philipp and Bartley, Tim}, year={2020} }","mla":"Schapeler, Timon, et al. “Quantum Detector Tomography of a 2×2 Multi-Pixel Array of Superconducting Nanowire Single Photon Detectors.” Optics Express, 33035, 2020, doi:10.1364/oe.404285.","short":"T. Schapeler, J.P. Höpker, T. Bartley, Optics Express (2020).","ieee":"T. Schapeler, J. P. Höpker, and T. Bartley, “Quantum detector tomography of a 2×2 multi-pixel array of superconducting nanowire single photon detectors,” Optics Express, Art. no. 33035, 2020, doi: 10.1364/oe.404285."},"language":[{"iso":"eng"}],"date_updated":"2023-01-12T12:55:16Z","_id":"20156","article_number":"33035","doi":"10.1364/oe.404285"},{"_id":"35936","date_updated":"2023-01-12T13:49:32Z","citation":{"bibtex":"@article{Caruso_2020, title={Schüler für ein Fach begeistern? Mit “Liebe” geht’s!}, journal={ katholisch.de, Kolumne „Mein Religionsunterricht“. }, author={Caruso, Carina}, year={2020} }","mla":"Caruso, Carina. “Schüler für ein Fach begeistern? Mit ‘Liebe’ geht’s!” katholisch.de, Kolumne „Mein Religionsunterricht“. , 2020.","ama":"Caruso C. Schüler für ein Fach begeistern? Mit “Liebe” geht’s! katholisch.de, Kolumne „Mein Religionsunterricht“ . Published online 2020.","apa":"Caruso, C. (2020). Schüler für ein Fach begeistern? Mit “Liebe” geht’s! katholisch.de, Kolumne „Mein Religionsunterricht“. .","chicago":"Caruso, Carina. “Schüler für ein Fach begeistern? Mit ‘Liebe’ geht’s!” katholisch.de, Kolumne „Mein Religionsunterricht“. , 2020.","ieee":"C. Caruso, “Schüler für ein Fach begeistern? Mit ‘Liebe’ geht’s!,” katholisch.de, Kolumne „Mein Religionsunterricht“. , 2020.","short":"C. Caruso, katholisch.de, Kolumne „Mein Religionsunterricht“. (2020)."},"type":"journal_article","year":"2020","language":[{"iso":"ger"}],"title":"Schüler für ein Fach begeistern? Mit \"Liebe\" geht's!","user_id":"86519","publication_status":"published","status":"public","date_created":"2023-01-11T09:10:00Z","author":[{"last_name":"Caruso","id":"23123","first_name":"Carina","full_name":"Caruso, Carina"}],"publication":" katholisch.de, Kolumne „Mein Religionsunterricht“. "},{"date_created":"2023-01-14T14:05:21Z","status":"public","publication_identifier":{"isbn":["978-3-86776-593-0"]},"publication_status":"published","department":[{"_id":"157"}],"author":[{"full_name":"Neumann, Stefan","first_name":"Stefan","id":"54897","last_name":"Neumann"},{"last_name":"Meschut","id":"32056","first_name":"Gerson","orcid":"0000-0002-2763-1246","full_name":"Meschut, Gerson"},{"first_name":"Andreas","full_name":"Fromm, Andreas","last_name":"Fromm"},{"last_name":"Maier","full_name":"Maier, Hans Jürgen","first_name":"Hans Jürgen"}],"user_id":"54897","title":"Innovative Mischbauweisen mit dünnwandigen Aluminiumdruckguss-Strukturen mittels Bolzensetzen und fließlochformenden Schrauben","language":[{"iso":"ger"}],"type":"book","year":"2020","citation":{"mla":"Neumann, Stefan, et al. Innovative Mischbauweisen mit dünnwandigen Aluminiumdruckguss-Strukturen mittels Bolzensetzen und fließlochformenden Schrauben. 2020.","bibtex":"@book{Neumann_Meschut_Fromm_Maier_2020, title={Innovative Mischbauweisen mit dünnwandigen Aluminiumdruckguss-Strukturen mittels Bolzensetzen und fließlochformenden Schrauben}, author={Neumann, Stefan and Meschut, Gerson and Fromm, Andreas and Maier, Hans Jürgen}, year={2020} }","ama":"Neumann S, Meschut G, Fromm A, Maier HJ. Innovative Mischbauweisen mit dünnwandigen Aluminiumdruckguss-Strukturen mittels Bolzensetzen und fließlochformenden Schrauben.; 2020.","apa":"Neumann, S., Meschut, G., Fromm, A., & Maier, H. J. (2020). Innovative Mischbauweisen mit dünnwandigen Aluminiumdruckguss-Strukturen mittels Bolzensetzen und fließlochformenden Schrauben.","chicago":"Neumann, Stefan, Gerson Meschut, Andreas Fromm, and Hans Jürgen Maier. Innovative Mischbauweisen mit dünnwandigen Aluminiumdruckguss-Strukturen mittels Bolzensetzen und fließlochformenden Schrauben, 2020.","ieee":"S. Neumann, G. Meschut, A. Fromm, and H. J. Maier, Innovative Mischbauweisen mit dünnwandigen Aluminiumdruckguss-Strukturen mittels Bolzensetzen und fließlochformenden Schrauben. 2020.","short":"S. Neumann, G. Meschut, A. Fromm, H.J. Maier, Innovative Mischbauweisen mit dünnwandigen Aluminiumdruckguss-Strukturen mittels Bolzensetzen und fließlochformenden Schrauben, 2020."},"date_updated":"2023-01-14T14:09:36Z","_id":"36835"},{"date_created":"2023-01-14T14:11:31Z","status":"public","publication_status":"published","publication_identifier":{"isbn":["978-3-86776-601-2"]},"department":[{"_id":"157"}],"author":[{"last_name":"Neumann","id":"54897","first_name":"Stefan","full_name":"Neumann, Stefan"},{"first_name":"Gerson","full_name":"Meschut, Gerson","orcid":"0000-0002-2763-1246","last_name":"Meschut","id":"32056"},{"last_name":"Schmatz","first_name":"Frederik","full_name":"Schmatz, Frederik"},{"last_name":"Flüge","full_name":"Flüge, Wilko","first_name":"Wilko"}],"user_id":"54897","title":"Robotergestütztes manuelles mechanisches Fügen","language":[{"iso":"ger"}],"year":"2020","citation":{"short":"S. Neumann, G. Meschut, F. Schmatz, W. Flüge, Robotergestütztes manuelles mechanisches Fügen, 2020.","ieee":"S. Neumann, G. Meschut, F. Schmatz, and W. Flüge, Robotergestütztes manuelles mechanisches Fügen. 2020.","chicago":"Neumann, Stefan, Gerson Meschut, Frederik Schmatz, and Wilko Flüge. Robotergestütztes manuelles mechanisches Fügen, 2020. https://doi.org/Robotergestütztes manuelles mechanisches Fügen.","apa":"Neumann, S., Meschut, G., Schmatz, F., & Flüge, W. (2020). Robotergestütztes manuelles mechanisches Fügen. https://doi.org/Robotergestütztes manuelles mechanisches Fügen","ama":"Neumann S, Meschut G, Schmatz F, Flüge W. Robotergestütztes manuelles mechanisches Fügen.; 2020. doi:Robotergestütztes manuelles mechanisches Fügen","mla":"Neumann, Stefan, et al. Robotergestütztes manuelles mechanisches Fügen. 2020, doi:Robotergestütztes manuelles mechanisches Fügen.","bibtex":"@book{Neumann_Meschut_Schmatz_Flüge_2020, title={Robotergestütztes manuelles mechanisches Fügen}, DOI={Robotergestütztes manuelles mechanisches Fügen}, author={Neumann, Stefan and Meschut, Gerson and Schmatz, Frederik and Flüge, Wilko}, year={2020} }"},"type":"book","doi":"Robotergestütztes manuelles mechanisches Fügen","date_updated":"2023-01-14T14:11:35Z","_id":"36836"},{"_id":"33870","date_updated":"2023-01-16T12:08:44Z","doi":"10.1007/978-3-030-58653-9_22","citation":{"bibtex":"@inbook{Balsa_Cots_Gergaud_Wembe Moafo_2020, place={Cham}, title={Minimum Energy Control of Passive Tracers Advection in Point Vortices Flow}, DOI={10.1007/978-3-030-58653-9_22}, booktitle={Lecture Notes in Electrical Engineering}, publisher={Springer International Publishing}, author={Balsa, Carlos and Cots, Olivier and Gergaud, Joseph and Wembe Moafo, Boris Edgar}, year={2020} }","mla":"Balsa, Carlos, et al. “Minimum Energy Control of Passive Tracers Advection in Point Vortices Flow.” Lecture Notes in Electrical Engineering, Springer International Publishing, 2020, doi:10.1007/978-3-030-58653-9_22.","chicago":"Balsa, Carlos, Olivier Cots, Joseph Gergaud, and Boris Edgar Wembe Moafo. “Minimum Energy Control of Passive Tracers Advection in Point Vortices Flow.” In Lecture Notes in Electrical Engineering. Cham: Springer International Publishing, 2020. https://doi.org/10.1007/978-3-030-58653-9_22.","apa":"Balsa, C., Cots, O., Gergaud, J., & Wembe Moafo, B. E. (2020). Minimum Energy Control of Passive Tracers Advection in Point Vortices Flow. In Lecture Notes in Electrical Engineering. Springer International Publishing. https://doi.org/10.1007/978-3-030-58653-9_22","ama":"Balsa C, Cots O, Gergaud J, Wembe Moafo BE. Minimum Energy Control of Passive Tracers Advection in Point Vortices Flow. In: Lecture Notes in Electrical Engineering. Springer International Publishing; 2020. doi:10.1007/978-3-030-58653-9_22","ieee":"C. Balsa, O. Cots, J. Gergaud, and B. E. Wembe Moafo, “Minimum Energy Control of Passive Tracers Advection in Point Vortices Flow,” in Lecture Notes in Electrical Engineering, Cham: Springer International Publishing, 2020.","short":"C. Balsa, O. Cots, J. Gergaud, B.E. Wembe Moafo, in: Lecture Notes in Electrical Engineering, Springer International Publishing, Cham, 2020."},"year":"2020","type":"book_chapter","language":[{"iso":"eng"}],"place":"Cham","title":"Minimum Energy Control of Passive Tracers Advection in Point Vortices Flow","user_id":"95394","author":[{"first_name":"Carlos","full_name":"Balsa, Carlos","last_name":"Balsa"},{"full_name":"Cots, Olivier","first_name":"Olivier","last_name":"Cots"},{"first_name":"Joseph","full_name":"Gergaud, Joseph","last_name":"Gergaud"},{"full_name":"Wembe Moafo, Boris Edgar","first_name":"Boris Edgar","id":"95394","last_name":"Wembe Moafo"}],"publisher":"Springer International Publishing","publication":"Lecture Notes in Electrical Engineering","publication_status":"published","publication_identifier":{"isbn":["9783030586522","9783030586539"],"issn":["1876-1100","1876-1119"]},"status":"public","date_created":"2022-10-24T12:59:19Z"},{"publication_identifier":{"issn":["1292-8119","1262-3377"]},"publication_status":"published","title":"A Zermelo navigation problem with a vortex singularity","language":[{"iso":"eng"}],"doi":"10.1051/cocv/2020058","date_updated":"2023-01-16T12:09:22Z","date_created":"2022-10-24T12:51:05Z","status":"public","volume":27,"keyword":["Computational Mathematics","Control and Optimization","Control and Systems Engineering"],"publication":"ESAIM: Control, Optimisation and Calculus of Variations","author":[{"first_name":"Bernard","full_name":"Bonnard, Bernard","last_name":"Bonnard"},{"first_name":"Olivier","full_name":"Cots, Olivier","last_name":"Cots"},{"id":"95394","last_name":"Wembe Moafo","full_name":"Wembe Moafo, Boris Edgar","first_name":"Boris Edgar"}],"publisher":"EDP Sciences","user_id":"95394","abstract":[{"text":"Helhmoltz–Kirchhoff equations of motions of vortices of an incompressible fluid in the plane define a dynamics with singularities and this leads to a Zermelo navigation problem describing the ship travel in such a field where the control is the heading angle. Considering one vortex, we define a time minimization problem which can be analyzed with the technics of geometric optimal control combined with numerical simulations, the geometric frame being the extension of Randers metrics in the punctured plane, with rotational symmetry. Candidates as minimizers are parameterized thanks to the Pontryagin Maximum Principle as extremal solutions of a Hamiltonian vector field. We analyze the time minimal solution to transfer the ship between two points where during the transfer the ship can be either in a strong current region in the vicinity of the vortex or in a weak current region. The analysis is based on a micro-local classification of the extremals using mainly the integrability properties of the dynamics due to the rotational symmetry. The discussion is complex and related to the existence of an isolated extremal (Reeb) circle due to the vortex singularity. The explicit computation of cut points where the extremal curves cease to be optimal is given and the spheres are described in the case where at the initial point the current is weak.","lang":"eng"}],"year":"2020","citation":{"apa":"Bonnard, B., Cots, O., & Wembe Moafo, B. E. (2020). A Zermelo navigation problem with a vortex singularity. ESAIM: Control, Optimisation and Calculus of Variations, 27, Article S10. https://doi.org/10.1051/cocv/2020058","ama":"Bonnard B, Cots O, Wembe Moafo BE. A Zermelo navigation problem with a vortex singularity. ESAIM: Control, Optimisation and Calculus of Variations. 2020;27. doi:10.1051/cocv/2020058","chicago":"Bonnard, Bernard, Olivier Cots, and Boris Edgar Wembe Moafo. “A Zermelo Navigation Problem with a Vortex Singularity.” ESAIM: Control, Optimisation and Calculus of Variations 27 (2020). https://doi.org/10.1051/cocv/2020058.","bibtex":"@article{Bonnard_Cots_Wembe Moafo_2020, title={A Zermelo navigation problem with a vortex singularity}, volume={27}, DOI={10.1051/cocv/2020058}, number={S10}, journal={ESAIM: Control, Optimisation and Calculus of Variations}, publisher={EDP Sciences}, author={Bonnard, Bernard and Cots, Olivier and Wembe Moafo, Boris Edgar}, year={2020} }","mla":"Bonnard, Bernard, et al. “A Zermelo Navigation Problem with a Vortex Singularity.” ESAIM: Control, Optimisation and Calculus of Variations, vol. 27, S10, EDP Sciences, 2020, doi:10.1051/cocv/2020058.","short":"B. Bonnard, O. Cots, B.E. Wembe Moafo, ESAIM: Control, Optimisation and Calculus of Variations 27 (2020).","ieee":"B. Bonnard, O. Cots, and B. E. Wembe Moafo, “A Zermelo navigation problem with a vortex singularity,” ESAIM: Control, Optimisation and Calculus of Variations, vol. 27, Art. no. S10, 2020, doi: 10.1051/cocv/2020058."},"type":"journal_article","article_number":"S10","_id":"33866","intvolume":" 27"},{"status":"public","date_created":"2021-05-04T08:49:44Z","author":[{"first_name":"Michael","full_name":"Haist, Michael","last_name":"Haist"},{"first_name":"Julian","full_name":"Link, Julian","last_name":"Link"},{"full_name":"Nicia, David","first_name":"David","last_name":"Nicia"},{"first_name":"Sarah","full_name":"Leinitz, Sarah","last_name":"Leinitz"},{"full_name":"Baumert, Christian","first_name":"Christian","last_name":"Baumert"},{"first_name":"Tabea","full_name":"von Bronk, Tabea","last_name":"von Bronk"},{"last_name":"Cotardo","full_name":"Cotardo, Dario","first_name":"Dario"},{"last_name":"Eslami Pirharati","first_name":"Mahmoud","full_name":"Eslami Pirharati, Mahmoud"},{"last_name":"Fataei","first_name":"Shirin","full_name":"Fataei, Shirin"},{"full_name":"Garrecht, Harald","first_name":"Harald","last_name":"Garrecht"},{"last_name":"Gehlen","first_name":"Christoph","full_name":"Gehlen, Christoph"},{"first_name":"Inga","full_name":"Hauschildt, Inga","last_name":"Hauschildt"},{"first_name":"Irina","full_name":"Ivanova, Irina","last_name":"Ivanova"},{"id":"3959","last_name":"Jesinghausen","orcid":"https://orcid.org/0000-0003-2611-5298","full_name":"Jesinghausen, Steffen","first_name":"Steffen"},{"last_name":"Klein","full_name":"Klein, Christopher","first_name":"Christopher"},{"first_name":"Hans-W.","full_name":"Krauss, Hans-W.","last_name":"Krauss"},{"full_name":"Lohaus, Ludger","first_name":"Ludger","last_name":"Lohaus"},{"first_name":"Dirk","full_name":"Lowke, Dirk","last_name":"Lowke"},{"last_name":"Mazanec","full_name":"Mazanec, Oliver","first_name":"Oliver"},{"full_name":"Pawelczyk, Sebastian","first_name":"Sebastian","last_name":"Pawelczyk"},{"first_name":"Ursula","full_name":"Pott, Ursula","last_name":"Pott"},{"full_name":"Radebe, Nonkululeko W.","first_name":"Nonkululeko W.","last_name":"Radebe"},{"first_name":"Joachim Jürgen","full_name":"Riedmiller, Joachim Jürgen","last_name":"Riedmiller"},{"full_name":"Schmid, Hans-Joachim","first_name":"Hans-Joachim","id":"464","last_name":"Schmid"},{"last_name":"Schmidt","first_name":"Wolfram","full_name":"Schmidt, Wolfram"},{"full_name":"Secrieru, Egor","first_name":"Egor","last_name":"Secrieru"},{"last_name":"Stephan","first_name":"Dietmar","full_name":"Stephan, Dietmar"},{"first_name":"Mareike","full_name":"Thiedeitz, Mareike","last_name":"Thiedeitz"},{"last_name":"Wilhelm","full_name":"Wilhelm, Manfred","first_name":"Manfred"},{"last_name":"Mechtcherine","first_name":"Viktor","full_name":"Mechtcherine, Viktor"}],"quality_controlled":"1","keyword":["Rheology","Wall Slip","Slip","apparent slip","suspension","cement","concrete"],"publication":"Materials and Structures","user_id":"3959","article_type":"original","abstract":[{"text":"This paper presents the results of an interlaboratory study of the rheological properties of cement paste and ultrasound gel as reference substance. The goal was to quantify the comparability and reproducibility of measurements of the Bingham parameters yield stress and plastic viscosity when measured on one specific paste composition and one particular ultrasound gel in different laboratories using different rheometers and measurement geometries. The procedures for both in preparing the cement paste and carrying out the rheological measurements on cement paste and ultrasound gel were carefully defined for all of the study’s participants. Different conversion schemes for comparing the results obtained with the different measurement setups are presented here and critically discussed. The procedure proposed in this paper ensured a reasonable comparability of the results with a coefficient of variation for the yield stress of 27% and for the plastic viscosity of 24%, despite the individual measurement series’ having been performed in different labs with different rheometers and measurement geometries.","lang":"eng"}],"type":"journal_article","year":"2020","citation":{"short":"M. Haist, J. Link, D. Nicia, S. Leinitz, C. Baumert, T. von Bronk, D. Cotardo, M. Eslami Pirharati, S. Fataei, H. Garrecht, C. Gehlen, I. Hauschildt, I. Ivanova, S. Jesinghausen, C. Klein, H.-W. Krauss, L. Lohaus, D. Lowke, O. Mazanec, S. Pawelczyk, U. Pott, N.W. Radebe, J.J. Riedmiller, H.-J. Schmid, W. Schmidt, E. Secrieru, D. Stephan, M. Thiedeitz, M. Wilhelm, V. Mechtcherine, Materials and Structures (2020).","ieee":"M. Haist et al., “Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries,” Materials and Structures, 2020, doi: 10.1617/s11527-020-01477-w.","chicago":"Haist, Michael, Julian Link, David Nicia, Sarah Leinitz, Christian Baumert, Tabea von Bronk, Dario Cotardo, et al. “Interlaboratory Study on Rheological Properties of Cement Pastes and Reference Substances: Comparability of Measurements Performed with Different Rheometers and Measurement Geometries.” Materials and Structures, 2020. https://doi.org/10.1617/s11527-020-01477-w.","apa":"Haist, M., Link, J., Nicia, D., Leinitz, S., Baumert, C., von Bronk, T., Cotardo, D., Eslami Pirharati, M., Fataei, S., Garrecht, H., Gehlen, C., Hauschildt, I., Ivanova, I., Jesinghausen, S., Klein, C., Krauss, H.-W., Lohaus, L., Lowke, D., Mazanec, O., … Mechtcherine, V. (2020). Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries. Materials and Structures. https://doi.org/10.1617/s11527-020-01477-w","ama":"Haist M, Link J, Nicia D, et al. Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries. Materials and Structures. Published online 2020. doi:10.1617/s11527-020-01477-w","bibtex":"@article{Haist_Link_Nicia_Leinitz_Baumert_von Bronk_Cotardo_Eslami Pirharati_Fataei_Garrecht_et al._2020, title={Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries}, DOI={10.1617/s11527-020-01477-w}, journal={Materials and Structures}, author={Haist, Michael and Link, Julian and Nicia, David and Leinitz, Sarah and Baumert, Christian and von Bronk, Tabea and Cotardo, Dario and Eslami Pirharati, Mahmoud and Fataei, Shirin and Garrecht, Harald and et al.}, year={2020} }","mla":"Haist, Michael, et al. “Interlaboratory Study on Rheological Properties of Cement Pastes and Reference Substances: Comparability of Measurements Performed with Different Rheometers and Measurement Geometries.” Materials and Structures, 2020, doi:10.1617/s11527-020-01477-w."},"main_file_link":[{"open_access":"1","url":"https://link.springer.com/article/10.1617/s11527-020-01477-w"}],"_id":"21949","publication_status":"published","publication_identifier":{"issn":["1359-5997","1871-6873"]},"department":[{"_id":"150"}],"title":"Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries","language":[{"iso":"eng"}],"oa":"1","doi":"10.1617/s11527-020-01477-w","date_updated":"2023-01-17T07:42:21Z"},{"oa":"1","doi":"10.3390/ma13020467","date_updated":"2023-01-17T07:45:59Z","language":[{"iso":"eng"}],"title":"Absolute Rheological Measurements of Model Suspensions: Influence and Correction of Wall Slip Prevention Measures","publication_status":"published","publication_identifier":{"issn":["1996-1944"]},"department":[{"_id":"150"}],"article_number":"467","_id":"21948","citation":{"ieee":"S. Pawelczyk, M. Kniepkamp, S. Jesinghausen, and H.-J. Schmid, “Absolute Rheological Measurements of Model Suspensions: Influence and Correction of Wall Slip Prevention Measures,” Materials, Art. no. 467, 2020, doi: 10.3390/ma13020467.","short":"S. Pawelczyk, M. Kniepkamp, S. Jesinghausen, H.-J. Schmid, Materials (2020).","mla":"Pawelczyk, Sebastian, et al. “Absolute Rheological Measurements of Model Suspensions: Influence and Correction of Wall Slip Prevention Measures.” Materials, 467, 2020, doi:10.3390/ma13020467.","bibtex":"@article{Pawelczyk_Kniepkamp_Jesinghausen_Schmid_2020, title={Absolute Rheological Measurements of Model Suspensions: Influence and Correction of Wall Slip Prevention Measures}, DOI={10.3390/ma13020467}, number={467}, journal={Materials}, author={Pawelczyk, Sebastian and Kniepkamp, Marieluise and Jesinghausen, Steffen and Schmid, Hans-Joachim}, year={2020} }","chicago":"Pawelczyk, Sebastian, Marieluise Kniepkamp, Steffen Jesinghausen, and Hans-Joachim Schmid. “Absolute Rheological Measurements of Model Suspensions: Influence and Correction of Wall Slip Prevention Measures.” Materials, 2020. https://doi.org/10.3390/ma13020467.","ama":"Pawelczyk S, Kniepkamp M, Jesinghausen S, Schmid H-J. Absolute Rheological Measurements of Model Suspensions: Influence and Correction of Wall Slip Prevention Measures. Materials. Published online 2020. doi:10.3390/ma13020467","apa":"Pawelczyk, S., Kniepkamp, M., Jesinghausen, S., & Schmid, H.-J. (2020). Absolute Rheological Measurements of Model Suspensions: Influence and Correction of Wall Slip Prevention Measures. Materials, Article 467. https://doi.org/10.3390/ma13020467"},"type":"journal_article","year":"2020","main_file_link":[{"url":"https://www.mdpi.com/1996-1944/13/2/467","open_access":"1"}],"user_id":"3959","abstract":[{"lang":"eng","text":"Since suspensions (e.g., in food, cement, or cosmetics industries) tend to show wall slip, the application of structured measuring surfaces in rheometers is widespread. Usually, for parallel-plate geometries, the tip-to-tip distance is used for calculation of absolute rheological values, which implies that there is no flow behind this distance. However, several studies show that this is not true. Therefore, the measuring gap needs to be corrected by adding the effective gap extension δ to the prescribed gap height H in order to obtain absolute rheological properties. In this paper, we determine the effective gap extension δ for different structures and fluids (Newtonian, shear thinning, and model suspensions that can be adjusted to the behavior of real fluids) and compare the corrected values to reference data. We observe that for Newtonian fluids a gap- and material-independent correction function can be derived for every measuring system, which is also applicable to suspensions, but not to shear thinning fluids. Since this relation appears to be mainly dependent on the characteristics of flow behaviour, we show that the calibration of structured measuring systems is possible with Newtonian fluids and then can be transferred to suspensions up to a certain particle content."}],"article_type":"original","date_created":"2021-05-04T08:48:48Z","status":"public","keyword":["wall slip prevention","effective gap height","parallel-plate system","structured surfaces","model suspensions","cement paste","fresh concrete"],"publication":"Materials","author":[{"last_name":"Pawelczyk","id":"38243","first_name":"Sebastian","full_name":"Pawelczyk, Sebastian"},{"full_name":"Kniepkamp, Marieluise","first_name":"Marieluise","last_name":"Kniepkamp"},{"id":"3959","last_name":"Jesinghausen","full_name":"Jesinghausen, Steffen","orcid":"https://orcid.org/0000-0003-2611-5298","first_name":"Steffen"},{"full_name":"Schmid, Hans-Joachim","first_name":"Hans-Joachim","id":"464","last_name":"Schmid"}],"quality_controlled":"1"}]