@article{UffmannAbichtGroteetal.2002, author = {Uffmann, Kai and Abicht, Claus and Grote, Wolfgang and Quick, Harald H. and Ladd, Mark E.}, title = {Design of an MR-compatible piezoelectric actuator for MR elastography}, series = {Concepts in Magnetic Resonance Part A: Bridging Education and Research}, volume = {15}, journal = {Concepts in Magnetic Resonance Part A: Bridging Education and Research}, number = {4}, publisher = {Wiley}, doi = {https://doi.org/10.1002/cmr.10045}, pages = {239 -- 254}, year = {2002}, abstract = {Magnetic Resonance (MR) elastography is a method for measuring tissue elasticity via phase images acquired with an MR scanner. The propagation of periodic mechanical waves through the tissue can be captured by means of a modified phase contrast sequence. These waves are generated with a mechanical oscillator (actuator) and coupled into the tissue through the skin. The actuator must be capable of generating a sinusoidal excitation with excellent phase and amplitude stability, while not disturbing the MR imaging process. In this work, an actuator based on a piezoelectric principle was developed. Based on the imaging evaluation of several material samples, the housing for the piezoelectric ceramic was constructed of aluminum. Smaller parts of the housing were manufactured from brass and titanium to fulfill the mechanical constraints. A lever was used to transfer the oscillation generated by the piezoelectric ceramic to the point of excitation. The lever amplifies the piezoelectric motion, allowing for a more compact design. Three different lever designs were characterized by an acceleration sensor both outside and inside the magnet. It was shown that the rigidity of the lever, as determined by its material and form, was decisive in determining the resonant frequency of the system and therefore the maximum practical frequency of operation. It was also shown that the motion of the oscillator is unaffected by the electromagnetic fields of the MR imager. The final design can be placed directly in the magnet bore within a few centimeters of the tissue volume to be imaged without generating significant artifacts. An amplitude range of 0-1 mm in the frequency range from 0 to over 300 Hz was achieved, sufficient for performing most MR elastography applications. © 2002 Wiley Periodicals, Inc. Concepts in Magnetic Resonance (Magn Reson Engineering) 15: 239-254, 2002}, language = {en} } @article{GalbanMaderwaldHerrmannetal.2005, author = {Galban, Craig and Maderwald, Stefan and Herrmann, Burkhard and Brauck, K. and Grote, Wolfgang and de Greiff, A. and Uffmann, K. and Ladd, M.}, title = {Measuring Skeletal Muscle Elasticity in Patients with Hypogonadism by MR Elastography}, series = {Proc. Intl. Soc. Mag. Reson. Med.}, volume = {13}, journal = {Proc. Intl. Soc. Mag. Reson. Med.}, pages = {2016}, year = {2005}, abstract = {Men afflicted with hypogonadism have reduced fat-free mass and in some cases a loss in muscle strength. We hypothesize that muscle elasticity of the lower extremities differs between patients with hypogonadism and healthy controls. The shear modulus of the soleus muscle was measured non-invasively using MR elastography (MRE) at 0\%, 5\%, 10\%, 15\%, and 20\% of the subject's maximum applied force. The results from this study showed statistical differences between the patients and controls, even though there were no statistical differences in applied force.}, language = {en} } @article{GalbanMaderwaldEggebrechtetal.2005, author = {Galban, Craig and Maderwald, Stefan and Eggebrecht, Holger and Grote, Wolfgang and de Greiff, A. and Uffmann, K. and Ladd, M. E.}, title = {Monitoring the Effects of Chronic Obstructive Pulmonary Disease on Muscle Elasticity by MR Elastography}, series = {Proc. Intl. Soc. Mag. Reson. Med.}, volume = {13}, journal = {Proc. Intl. Soc. Mag. Reson. Med.}, pages = {2015}, year = {2005}, abstract = {Men afflicted with chronic obstructive pulmonary disease (COPD) show signs of muscle dysfunction, such as increased muscle fatigue and acidosis during exercise. We hypothesize that muscle elasticity of the lower extremities differs between patients with COPD and age-related controls. The shear modulus of the soleus muscle was measured non-invasively using MR elastography (MRE) at 0\%, 5\%, 10\%, 15\%, and 20\% of the subject's maximum applied force. The results from this study showed statistical differences between the patients and controls, even though there were no statistical differences in the maximum applied force.}, language = {en} } @article{BeyerGroteReinig2008, author = {Beyer, Marc-Andr{\´e} and Grote, Wolfgang and Reinig, Gunter}, title = {Adaptive exact linearization control of batch polymerization reactors using a Sigma-Point Kalman Filter}, series = {Journal of Process Control}, volume = {18}, journal = {Journal of Process Control}, number = {7-8}, publisher = {Elsevier}, doi = {10.1016/j.jprocont.2007.12.002}, pages = {663 -- 675}, year = {2008}, abstract = {The Chylla-Haase polymerization reactor is widely accepted as a benchmark process for the evaluation of control strategies for batch reactors. In this contribution a control concept based on Exact I/O-Linearization is proposed and compared to a conventional cascade control structure. In order to adapt the exact linearization control strategy to various polymerization products and batch conditions, an advanced probabilistic inference algorithm (Sigma-Point Kalman Filter) is applied and investigated. Sigma-Point Kalman Filters have the major improvement of simplified implementation compared to local linearization methods (i.e. Extended Kalman Filter) because no analytical Jacobians are required. Stochastic simulation studies are introduced and show the effectiveness, accuracy and benefit of the control concept. Within several scenarios a satisfying robustness against structural errors in the underlying model equations for the nonlinear control law and the inference algorithm is demonstrated. Furthermore it is pointed out, that with little effort in reassembling the plant design, control performance can be improved significantly.}, language = {en} } @inproceedings{GroteKastsianMoennigmann2011, author = {Grote, Wolfgang and Kastsian, Darya and M{\"o}nnigmann, Martin}, title = {Optimal power system unit commitment with guaranteed local stability}, series = {Proceedings of the 2011 American Control Conference}, booktitle = {Proceedings of the 2011 American Control Conference}, publisher = {IEEE}, issn = {2378-5861}, doi = {10.1109/ACC.2011.5991058}, pages = {4526 -- 4531}, year = {2011}, abstract = {This article deals with the cost optimal commitment of power systems. System stability is often only considered after solving the commitment problem. We show by example that a cost optimization may result in a mode of operation that, while economically optimal, is unstable or has otherwise unacceptable dynamics. As a remedy, we propose to use the so-called normal vector method, which has been developed for the optimization of nonlinear dynamical systems with stability boundaries and uncertain parameters. We apply the method to a small sample power grid, where the optimization goal is to minimize the energy production costs for a given power consumption.}, language = {en} } @article{GroteKastsianMoennigmann2013, author = {Grote, Wolfgang and Kastsian, Darya and M{\"o}nnigmann, Martin}, title = {Guaranteed stability in optimal power generation dispatching under uncertainty}, series = {IEEE Transactions on Power Systems}, volume = {28}, journal = {IEEE Transactions on Power Systems}, number = {2}, publisher = {IEEE}, issn = {1558-0679}, doi = {10.1109/TPWRS.2012.2207970}, pages = {1103 -- 1112}, year = {2013}, abstract = {Stability and cost optimality of power generation and supply systems must not be considered independently from one another. Simple examples show that optimizing cost without considering stability may result in modes of operation that, while economically optimal, are unstable. We demonstrate that stability, robustness, and optimality can be considered systematically and simultaneously by combining bifurcation theory and nonlinear optimization. Essentially, the proposed method enforces a backoff distance between the optimal point of operation and operational or stability boundaries in the space of the optimization variables, where bifurcation theory is used to describe nonlinear stability boundaries.}, language = {en} } @article{JostGroteMoellenbrucketal.2014, author = {Jost, Michael and Grote, Wolfgang and M{\"o}llenbruck, Florian and M{\"o}nnigmann, Martin}, title = {Plant-wide control of a parabolic trough power plant with thermal energy storage}, series = {IFAC Proceedings Volumes}, volume = {47}, journal = {IFAC Proceedings Volumes}, number = {3}, publisher = {Elsevier}, issn = {2589-3653}, doi = {10.3182/20140824-6-ZA-1003.00879}, pages = {419 -- 425}, year = {2014}, abstract = {We present a control scheme for a parabolic trough power plant that is equipped with a molten salt thermal energy storage system. We show that the multivariable control problem for the solar field can be decoupled by controlling the three way valve that splits the heat transfer fluid between the storage system and the steam generator. The steam generation cycle is regulated with inlet pressure control. The subsystems of the plant are modeled based on first principles, where we focus on the steam generation cycle. A multi-group extraction turbine with pre- and reheater is considered, which is suitable for solar power plants. We demonstrate the benefits of the proposed control scheme with a day-to-day simulation.}, language = {en} } @article{MierMoellenbruckJostetal.2015, author = {Mier, Dominik and M{\"o}llenbruck, Florian and Jost, Michael and Grote, Wolfgang and M{\"o}nnigmann, Martin}, title = {Model predictive control of the steam cycle in a solar power plant}, series = {IFAC-PapersOnLine}, volume = {48}, journal = {IFAC-PapersOnLine}, number = {8}, publisher = {Elsevier}, issn = {2405-8963}, doi = {10.1016/j.ifacol.2015.09.052}, pages = {710 -- 715}, year = {2015}, abstract = {We derive a nonlinear model of the steam cycle of a solar power plant, estimate its unknown parameters with measured data, and design a linear model predictive controller based on the resulting model. Simulations show that the linear model predictive controller is able to regulate the electrical power of the nonlinear steam process of the plant to a given reference trajectory very well. Moreover, it results in very good disturbance rejection.}, language = {en} } @inproceedings{Spiegel2017, author = {Spiegel, Thomas}, title = {Imbalance reduction of energy balancing groups as a means of renewable energy expansion - Optiosn for an active energy balancing group management}, series = {12th Conference on Sustainable Development of Energy, Water and Environment Systems, 04.-08.10.2017, Dubrovnik}, booktitle = {12th Conference on Sustainable Development of Energy, Water and Environment Systems, 04.-08.10.2017, Dubrovnik}, editor = {The International Centre for Sustainable Development of Energy, Water and Environment Systems,}, year = {2017}, language = {en} } @inproceedings{RoedderFrankKirschneretal.2017, author = {R{\"o}dder, Maximilian and Frank, Lena and Kirschner, Daniel and Neef, Matthias and Adam, Mario}, title = {EnergiBUS4home - Sustainable energy resourcing in low-energy buildings}, series = {12th Conference on Sustainable Development of Energy, Water and Environment Systems, 04.-08.10.2017, Dubrovnik}, booktitle = {12th Conference on Sustainable Development of Energy, Water and Environment Systems, 04.-08.10.2017, Dubrovnik}, editor = {The International Centre for Sustainable Development of Energy, Water and Environment Systems,}, year = {2017}, language = {en} } @inproceedings{ReichAdamLambach2018, author = {Reich, Marius and Adam, Mario and Lambach, Stefan}, title = {Comparison of different Methods for Approximating Models of Energy Supply Systems and Polyoptimising the Systems-Structure and Components-Dimension}, series = {30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2017), San Diego, California, USA, 2-6 July 2017}, booktitle = {30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2017), San Diego, California, USA, 2-6 July 2017}, publisher = {Curran Associates Inc}, address = {Red Hook, NY}, isbn = {9781510862562}, pages = {2921 -- 2933}, year = {2018}, language = {en} } @inproceedings{HelbigEggertAdam2017, author = {Helbig, Sonja and Eggert, Daniel and Adam, Mario}, title = {Energetic and Economic Efficiency Evaluation of Solar Assisted Heating Systems for Multi-Family Houses}, series = {Proceedings of SWC2017/SHC2017, 29.10.-02.11.2017, Abu Dhabi}, booktitle = {Proceedings of SWC2017/SHC2017, 29.10.-02.11.2017, Abu Dhabi}, editor = {Romero, Manuel and Mugnier, Daniel and Renn{\´e}, David and Guthrie, Ken and Griffiths, Steven}, publisher = {International Solar Energy Society}, address = {Freiburg}, isbn = {978-3-9814659-7-6}, doi = {10.18086/swc.2017.29.04}, pages = {1 -- 10}, year = {2017}, language = {en} } @article{WiesmannHamelKaluza2018, author = {Wiesmann, Thomas and Hamel, Christian and Kaluza, Stefan}, title = {Techniques to Remove Traces of Oxygen by Catalytic Conversion from Gas Mixtures}, series = {Chemie Ingenieur Technik}, volume = {90}, journal = {Chemie Ingenieur Technik}, number = {10}, publisher = {Wiley}, issn = {1522-2640}, doi = {10.1002/cite.201800022}, pages = {1446 -- 1452}, year = {2018}, language = {en} } @article{WeideSchulzKaluzaetal.2016, author = {Weide, Philipp and Schulz, Katharina and Kaluza, Stefan and Rohe, Markus and Beranek, Radim and Muhler, Martin}, title = {Controlling the Photocorrosion of Zinc Sulfide Nanoparticles in Water by Doping with Chloride and Cobalt Ions}, series = {Langmuir}, volume = {32}, journal = {Langmuir}, number = {48}, publisher = {ACS Publ.}, issn = {1520-5827}, doi = {10.1021/acs.langmuir.6b03385}, pages = {12641 -- 12649}, year = {2016}, language = {en} } @article{TitusKaluzaMarschall2014, author = {Titus, Juliane and Kaluza, Stefan and Marschall, Roland}, title = {German Catalysis on an International Scale in Weimar}, series = {ChemCatChem}, volume = {6}, journal = {ChemCatChem}, number = {6}, publisher = {Wiley}, issn = {1867-3899}, doi = {10.1002/cctc.201402266}, pages = {1523 -- 1525}, year = {2014}, language = {en} } @article{SchulzkeConradKaluzaetal.2017, author = {Schulzke, Tim and Conrad, Stefan and Kaluza, Stefan and van Loo, Tom}, title = {Upgrading of fast pyrolysis condensates via esterification with higher alcohols}, series = {Biomass and Bioenergy}, volume = {103}, journal = {Biomass and Bioenergy}, publisher = {Elsevier}, issn = {0961-9534}, doi = {10.1016/j.biombioe.2017.05.010}, pages = {11 -- 20}, year = {2017}, language = {en} } @article{SchmidtGoebelNebeletal.2018, author = {Schmidt, Stefan and G{\"o}bel, Christoph and Nebel, Janine and Wiesmann, Thomas and Hamel, Christian and Reinsdorf, Arne and Wolf, Dorit and Gehrmann, Stefan and Tenhumberg, Nils and Muhler, Martin and Kaluza, Stefan}, title = {Recent Developments in the Conversion of Synthesis Gas to Short-Chain Alcohols over Cu-Co-Based Catalysts}, series = {Chemie Ingenieur Technik}, volume = {90}, journal = {Chemie Ingenieur Technik}, number = {10}, publisher = {Wiley}, issn = {1522-2640}, doi = {10.1002/cite.201800023}, pages = {1465 -- 1475}, year = {2018}, language = {en} } @article{SchittkowskiRulandLaudenschlegeretal.2018, author = {Schittkowski, Julian and Ruland, Holger and Laudenschleger, Daniel and Girod, Kai and K{\"a}hler, Kevin and Kaluza, Stefan and Muhler, Martin and Schl{\"o}gl, Robert}, title = {Methanol Synthesis from Steel Mill Exhaust Gases: Challenges for the Industrial Cu/ZnO/Al 2 O 3 Catalyst}, series = {Chemie Ingenieur Technik}, volume = {90}, journal = {Chemie Ingenieur Technik}, number = {10}, publisher = {Wiley}, issn = {1522-2640}, doi = {10.1002/cite.201800017}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-34526}, pages = {1419 -- 1429}, year = {2018}, language = {en} } @article{PeterFichtlRulandetal.2012, author = {Peter, Maximilian and Fichtl, Matthias B. and Ruland, Holger and Kaluza, Stefan and Muhler, Martin and Hinrichsen, Olaf}, title = {Detailed kinetic modeling of methanol synthesis over a ternary copper catalyst}, series = {Chemical Engineering Journal}, volume = {203}, journal = {Chemical Engineering Journal}, publisher = {Elsevier}, issn = {0009-2509}, doi = {10.1016/j.cej.2012.06.066}, pages = {480 -- 491}, year = {2012}, language = {en} } @article{NebelSchmidtPanetal.2019, author = {Nebel, Janine and Schmidt, Stefan and Pan, Qiushi and Lotz, Katrin and Kaluza, Stefan and Muhler, Martin}, title = {On the role of cobalt carbidization in higher alcohol synthesis over hydrotalcite-based Co-Cu catalysts}, series = {Chinese Journal of Catalysis}, volume = {40}, journal = {Chinese Journal of Catalysis}, number = {11}, publisher = {Elsevier}, issn = {1872-2067}, doi = {10.1016/S1872-2067(19)63344-9}, pages = {1731 -- 1740}, year = {2019}, language = {en} } @article{MeiSanchezReineckeetal.2011, author = {Mei, Bastian and S{\´a}nchez, Miguel D. and Reinecke, Thomas and Kaluza, Stefan and Xia, Wei and Muhler, Martin}, title = {The synthesis of Nb-doped TiO2 nanoparticles by spray drying: an efficient and scalable method}, series = {Journal of Materials Chemistry}, volume = {21}, journal = {Journal of Materials Chemistry}, number = {32}, publisher = {Royal Society of Chemistry (RSC)}, issn = {1364-5501}, doi = {10.1039/c1jm11431j}, pages = {11781 -- 11790}, year = {2011}, language = {en} } @incollection{KaluzaMuhler2010, author = {Kaluza, Stefan and Muhler, Martin}, title = {A novel continuous approach for the synthesis and characterization of pure and mixed metal oxide systems applied in heterogeneous catalysis}, series = {Scientific Bases for the Preparation of Heterogeneous Catalysts}, volume = {Studies in Surface Science and Catalysis, 175}, booktitle = {Scientific Bases for the Preparation of Heterogeneous Catalysts}, editor = {Gaigneaux, E. M. and Devillers, M. and Hermans, S. and Jacobs, P. A. and Martens, J. A. and Ruiz, P.}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {978-0-444-53601-3}, doi = {10.1016/S0167-2991(10)75027-8}, pages = {217 -- 220}, year = {2010}, language = {en} } @article{KaluzaSchroeterNaumannd'Alnoncourtetal.2008, author = {Kaluza, Stefan and Schr{\"o}ter, Marie Katrin and Naumann d'Alnoncourt, Raoul and Reinecke, Thomas and Muhler, Martin}, title = {High Surface Area ZnO Nanoparticles via a Novel Continuous Precipitation Route}, series = {Advanced Functional Materials}, volume = {18}, journal = {Advanced Functional Materials}, number = {22}, issn = {1616-3028}, doi = {10.1002/adfm.200800457}, pages = {3670 -- 3677}, year = {2008}, language = {en} } @article{KaluzaMuhler2009, author = {Kaluza, Stefan and Muhler, Martin}, title = {On the Role of Aging, Washing, and Drying in the Synthesis of Polycrystalline Zinc Oxide by Precipitation: Combining Fast Continuous Mixing, Spray Drying and Freeze Drying to Unravel the Solid-State Transformations of the Precipitate}, series = {Catalysis Letters}, volume = {129}, journal = {Catalysis Letters}, number = {3-4}, publisher = {Springer}, doi = {10.1007/s10562-008-9818-5}, pages = {287 -- 292}, year = {2009}, language = {en} } @article{KaluzaMuhler2009, author = {Kaluza, Stefan and Muhler, Martin}, title = {On the precipitation mechanism and the role of the post-precipitation steps during the synthesis of binary ZnO-Al2O3 composites with high specific surface area}, series = {Journal of Materials Chemistry}, volume = {19}, journal = {Journal of Materials Chemistry}, number = {23}, publisher = {Royal Society of Chemistry (RSC)}, issn = {1364-5501}, doi = {10.1039/b902004g}, pages = {3914 -- 3922}, year = {2009}, language = {en} } @article{KaluzaBehrensSchiefenhoeveletal.2011, author = {Kaluza, Stefan and Behrens, Malte and Schiefenh{\"o}vel, Nora and Kniep, Benjamin and Fischer, Richard and Schl{\"o}gl, Robert and Muhler, Martin}, title = {A Novel Synthesis Route for Cu/ZnO/Al2O3 Catalysts used in Methanol Synthesis: Combining Continuous Consecutive Precipitation with Continuous Aging of the Precipitate}, series = {ChemCatChem}, volume = {3}, journal = {ChemCatChem}, number = {1}, publisher = {Wiley}, issn = {1867-3899}, doi = {10.1002/cctc.201000329}, pages = {189 -- 199}, year = {2011}, language = {en} } @article{JungePuringPiontekSmialkowskietal.2017, author = {Junge Puring, Kai and Piontek, Stefan and Smialkowski, Mathias and Burfeind, Jens and Kaluza, Stefan and Doetsch, Christian and Apfel, Ulf-Peter}, title = {Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications}, series = {Journal of visualized experiments : JoVE}, journal = {Journal of visualized experiments : JoVE}, number = {124}, publisher = {JoVE}, issn = {1940-087X}, doi = {10.3791/56087}, year = {2017}, abstract = {The rock material pentlandite with the composition Fe4.5Ni4.5S8 was synthesized via high temperature synthesis from the elements. The structure and composition of the material was characterized via powder X-ray diffraction (PXRD), M{\"o}ssbauer spectroscopy (MB), scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and energy dispersive X-ray spectroscopy (EDX). Two preparation methods of pentlandite bulk electrodes are presented. In the first approach a piece of synthetic pentlandite rock is directly contacted via a wire ferrule. The second approach utilizes pentlandite pellets, pressed from finely ground powder, which is immobilized in a Teflon casing. Both electrodes, whilst being prepared by an additive-free method, reveal high durability during electrocatalytic conversions in comparison to common drop-coating methods. We herein showcase the striking performance of such electrodes to accomplish the hydrogen evolution reaction (HER) and present a standardized method to evaluate the electrocatalytic performance by electrochemical and gas chromatographic methods. Furthermore, we report stability tests via potentiostatic methods at an overpotential of 0.6 V to explore the material limitations of the electrodes during electrolysis under industrial relevant conditions.}, language = {en} } @article{HeeskensAghaeiKaluzaetal.2013, author = {Heeskens, Denise and Aghaei, Pedram and Kaluza, Stefan and Strunk, Jennifer and Muhler, Martin}, title = {Selective oxidation of ethanol in the liquid phase over Au/TiO 2}, series = {physica status solidi (b)}, volume = {250}, journal = {physica status solidi (b)}, number = {6}, publisher = {Wiley}, issn = {1521-3951}, doi = {10.1002/pssb.201248440}, pages = {1107 -- 1118}, year = {2013}, language = {en} } @incollection{HamelKaluzaUnger2015, author = {Hamel, Christian and Kaluza, Stefan and Unger, Christoph}, title = {Catalytic tar reforming of biomass-derived synthesis gas: Influence of the catalyst, gas composition and sulfur poisoning}, series = {Preprints of the DGMK-Conference "Synthesis Gas Chemistry",October 7 - 9, 2015, Dresden}, volume = {DGMK Tagungsbericht, 2015,2}, booktitle = {Preprints of the DGMK-Conference "Synthesis Gas Chemistry",October 7 - 9, 2015, Dresden}, editor = {Ernst, Stefan}, publisher = {DGMK}, address = {Hamburg}, organization = {DGMK}, isbn = {978-3-941721-56-2}, pages = {139 -- 146}, year = {2015}, language = {en} } @article{GirodBreitkreuzGerstneretal.2018, author = {Girod, Kai and Breitkreuz, Klaas and Gerstner, Andrea and Marzi, Thomas and Schulzke, Tim and Kaluza, Stefan}, title = {Close-to-Practice Investigations of Heterogeneously Catalyzed Syngas Conversions in Slurry and Fixed-Bed Reactor Systems}, series = {Chemie Ingenieur Technik}, volume = {90}, journal = {Chemie Ingenieur Technik}, number = {5}, publisher = {Wiley}, issn = {1522-2640}, doi = {10.1002/cite.201700143}, pages = {690 -- 695}, year = {2018}, language = {en} } @article{EngeldahlOezaslanMarschalletal.2015, author = {Engeldahl, Barthel and {\"O}zaslan, Mehtap and Marschall, Roland and Rose, Marcus and Kaluza, Stefan and Titus, Juliane and Sprung, Christoph}, title = {Weimar 2015: Catalysing Tomorrow's Solutions}, series = {ChemCatChem}, volume = {7}, journal = {ChemCatChem}, number = {12}, publisher = {Wiley}, issn = {1867-3899}, doi = {10.1002/cctc.201500435}, pages = {1794 -- 1796}, year = {2015}, language = {en} } @article{EngelKaluzaOezaslanetal.2017, author = {Engel, Rebecca V. and Kaluza, Stefan and Oezaslan, Mehtap and Peitz, Stephan}, title = {German Catalysis Meeting - 50 Years and as Young as Ever}, series = {ChemCatChem}, volume = {9}, journal = {ChemCatChem}, number = {11}, publisher = {Wiley}, issn = {1867-3899}, doi = {10.1002/cctc.201700683}, pages = {2018 -- 2020}, year = {2017}, language = {en} } @article{BozKaluzaBoroğluetal.2012, author = {Boz, İsmail and Kaluza, Stefan and Boroğlu, Mehtap Şafak and Muhler, Martin}, title = {Synthesis of high surface area ZnO powder by continuous precipitation}, series = {Materials Research Bulletin}, volume = {47}, journal = {Materials Research Bulletin}, number = {5}, publisher = {Elsevier}, issn = {1873-4227}, doi = {10.1016/j.materresbull.2012.02.005}, pages = {1185 -- 1190}, year = {2012}, language = {en} } @article{BordoloiSanchezNoeietal.2014, author = {Bordoloi, Ankur and Sanchez, Miguel and Noei, Heshmat and Kaluza, Stefan and Großmann, Dennis and Wang, Yuemin and Gr{\"u}nert, Wolfgang and Muhler, Martin}, title = {Catalytic Behaviour of Mesoporous Cobalt-Aluminum Oxides for CO Oxidation}, series = {Journal of Catalysts}, journal = {Journal of Catalysts}, publisher = {Hindawi}, issn = {2314-5110}, doi = {10.1155/2014/807545}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-34344}, pages = {1 -- 9}, year = {2014}, language = {en} } @article{AntonRulandKaluzaetal.2015, author = {Anton, Johan and Ruland, Holger and Kaluza, Stefan and Muhler, Martin}, title = {Fast and Reproducible Testing of Cu-Co-Based Catalysts Applied in the Conversion of Synthesis Gas to Ethanol and Higher Alcohols}, series = {Catalysis Letters}, volume = {145}, journal = {Catalysis Letters}, number = {7}, publisher = {Springer}, doi = {10.1007/s10562-015-1543-2}, pages = {1374 -- 1381}, year = {2015}, language = {en} } @article{AntonNebelSongetal.2016, author = {Anton, Johan and Nebel, Janine and Song, Huiqing and Froese, Christian and Weide, Philipp and Ruland, Holger and Muhler, Martin and Kaluza, Stefan}, title = {The effect of sodium on the structure-activity relationships of cobalt-modified Cu/ZnO/Al2O3 catalysts applied in the hydrogenation of carbon monoxide to higher alcohols}, series = {Journal of Catalysis}, volume = {335}, journal = {Journal of Catalysis}, publisher = {Elsevier}, issn = {0021-9517}, doi = {10.1016/j.jcat.2015.12.016}, pages = {175 -- 186}, year = {2016}, language = {en} } @article{AntonNebelGoebeletal.2016, author = {Anton, Johan and Nebel, Janine and G{\"o}bel, Christoph and Gabrysch, Thomas and Song, Huiqing and Froese, Christian and Ruland, Holger and Muhler, Martin and Kaluza, Stefan}, title = {CO Hydrogenation to Higher Alcohols over Cu-Co-Based Catalysts Derived from Hydrotalcite-Type Precursors}, series = {Topics in Catalysis}, volume = {59}, journal = {Topics in Catalysis}, number = {15-16}, publisher = {Springer Nature}, doi = {10.1007/s11244-016-0663-2}, pages = {1361 -- 1370}, year = {2016}, language = {en} } @article{AntonNebelSongetal.2015, author = {Anton, Johan and Nebel, Janine and Song, Huiqing and Froese, Christian and Weide, Philipp and Ruland, Holger and Muhler, Martin and Kaluza, Stefan}, title = {Structure-activity relationships of Co-modified Cu/ZnO/Al2O3 catalysts applied in the synthesis of higher alcohols from synthesis gas}, series = {Applied Catalysis A: General}, volume = {505}, journal = {Applied Catalysis A: General}, publisher = {Elsevier}, issn = {0926-860X}, doi = {10.1016/j.apcata.2015.07.002}, pages = {326 -- 333}, year = {2015}, language = {en} } @incollection{AntonNebelFroeseetal.2015, author = {Anton, Johan and Nebel, Janine and Froese, Christian and Kleinschmidt, Ralph and Quandt, Thomas and Ruland, Holger and Kaluza, Stefan and Muhler, Martin}, title = {Higher alcohol synthesis over Na-modified Co-Cu catalysts: Co2C formation and effect of surface composition}, series = {Preprints of the DGMK-Conference "Synthesis Gas Chemistry", October 7 - 9, 2015, Dresden}, volume = {DGMK Tagungsbericht, 2015,2}, booktitle = {Preprints of the DGMK-Conference "Synthesis Gas Chemistry", October 7 - 9, 2015, Dresden}, editor = {Ernst, Stefan}, publisher = {DGMK}, address = {Hamburg}, organization = {DGMK}, isbn = {978-3-941721-56-2}, pages = {137}, year = {2015}, abstract = {Cu-Co-based model catalysts were prepared by a sophisticated alkali-free synthesis method and tested in the conversion of synthesis gas to higher alcohols. MoO3-coated alumina was used as the support, providing both high specific surface area and strongly interacting sites for the deposition of the active metals. A bulk Cu/Co ratio of ~2 was found to be most suitable in terms of activity and product distribution. Surface enrichment of Mo for all samples was observed by XPS, which significantly influenced the performance of the catalysts. Mo was found to be both a structural and a chemical promoter. Strong metal-support interactions were further achieved by modification of alumina with magnesia. With 12 wt\% Mg incorporated, the catalysts showed 40\% total oxygenate selectivity including 11\% selectivity to ethanol.}, language = {en} } @misc{Seidel2021, author = {Seidel, Carl Anton}, title = {Jumping Humanoid Simulink Simulation With Three Hill-Type Muscle Models}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-33765}, year = {2021}, abstract = {This paper investigates the implementation of a human body model for the simulation of a jumping motion in Simulink. It contains details to get an insight into modern biomechanics without previous experience. In the simulation, a Hill-Type muscle is used to generate joint momentum with a phenomenologically realistic relationship between muscle length and force. The simulation published with this article is one of many solutions to design a humanoid simulation. The paper guides through the implemented build and explains its range of application.}, language = {en} } @inproceedings{BiedermannReichKameieretal.2018, author = {Biedermann, Till M. and Reich, Marius and Kameier, Frank and Adam, Mario and Paschereit, C.}, title = {Assessment of Statistical Sampling Methods and Approximation Models Applied to Aeroacoustic and Vibroacoustic Problem}, series = {NOVEM - 6th conference on Noise and Vibration emerging methods, 07.-09.05.2018, Ibiza / Spain}, booktitle = {NOVEM - 6th conference on Noise and Vibration emerging methods, 07.-09.05.2018, Ibiza / Spain}, address = {Ibiza}, year = {2018}, language = {en} } @incollection{WendlandBumannMartinetal.2020, author = {Wendland, Andr{\´e} and Bumann, Marc and Martin, Shane and Niemann, J{\"o}rg and Bosman, Stephen}, title = {Optimizing System Design Through Thermal Analysis with Cubesatellite as Case Study}, series = {Systems, Software and Services Process Improvement}, booktitle = {Systems, Software and Services Process Improvement}, editor = {Yilmaz, Murat and Niemann, J{\"o}rg and Clarke, Paul and Messnarz, Richard}, publisher = {Springer Nature Switzerland}, address = {Cham}, isbn = {978-3-030-56440-7}, doi = {10.1007/978-3-030-56441-4_30}, pages = {408 -- 420}, year = {2020}, language = {en} } @article{RuessPahl2009, author = {Ruess, Martin and Pahl, P. J.}, title = {An extended QR-solver for large profiled matrices}, series = {International Journal for Numerical Methods in Engineering}, volume = {79}, journal = {International Journal for Numerical Methods in Engineering}, number = {11}, publisher = {Wiley}, issn = {1097-0207}, doi = {10.1002/nme.2618}, pages = {1419 -- 1442}, year = {2009}, language = {en} } @article{YangKollmannsbergerDuesteretal.2011, author = {Yang, Zhengxiong and Kollmannsberger, Stefan and D{\"u}ster, Alexander and Ruess, Martin and Garcia, Eduardo Grande and Burgkart, Rainer and Rank, Ernst}, title = {Non-standard bone simulation: interactive numerical analysis by computational steering}, series = {Computing and Visualization in Science}, volume = {14}, journal = {Computing and Visualization in Science}, number = {5}, publisher = {Springer}, doi = {10.1007/s00791-012-0175-y}, pages = {207 -- 216}, year = {2011}, language = {en} } @article{ZanderKollmannsbergerRuessetal.2012, author = {Zander, Nils and Kollmannsberger, Stefan and Ruess, Martin and Yosibash, Z. and Rank, Ernst}, title = {The Finite Cell Method for linear thermoelasticity}, series = {Computers \& Mathematics with Applications}, volume = {64}, journal = {Computers \& Mathematics with Applications}, number = {11}, publisher = {Elsevier}, issn = {0898-1221}, doi = {10.1016/j.camwa.2012.09.002}, pages = {3527 -- 3541}, year = {2012}, language = {en} } @inproceedings{RuessMundaniRank2009, author = {Ruess, Martin and Mundani, Ralf-Peter and Rank, Ernst}, title = {Computational steering in dynamic structure simulation: An improved communication concept}, series = {2009 IEEE Toronto International Conference Science and Technology for Humanity (TIC-STH), Toronto, 26.09.2009 - 27.09.2009}, booktitle = {2009 IEEE Toronto International Conference Science and Technology for Humanity (TIC-STH), Toronto, 26.09.2009 - 27.09.2009}, publisher = {IEEE}, isbn = {978-1-4244-3877-8}, doi = {10.1109/TIC-STH.2009.5444450}, pages = {497 -- 502}, year = {2009}, language = {en} } @article{YangRuessKollmannsbergeretal.2012, author = {Yang, Z. and Ruess, Martin and Kollmannsberger, Stefan and D{\"u}ster, Alexander and Rank, Ernst}, title = {An efficient integration technique for the voxel-based finite cell method}, series = {International Journal for Numerical Methods in Engineering}, volume = {91}, journal = {International Journal for Numerical Methods in Engineering}, number = {5}, publisher = {Wiley}, issn = {1097-0207}, doi = {10.1002/nme.4269}, pages = {457 -- 471}, year = {2012}, language = {en} } @inproceedings{RuessVarduhnRanketal.2012, author = {Ruess, Martin and Varduhn, Vasco and Rank, Ernst and Yosibash, Zohar}, title = {A Parallel High-Order Fictitious Domain Approach for Biomechanical Applications}, series = {11th International Symposium on Parallel and Distributed Computing (ISPDC), 2012 : 25 - 29 June 2012, Munich, Germany ; proceedings}, booktitle = {11th International Symposium on Parallel and Distributed Computing (ISPDC), 2012 : 25 - 29 June 2012, Munich, Germany ; proceedings}, editor = {Bader, Michael}, publisher = {IEEE}, address = {Piscataway}, isbn = {978-1-4673-2599-8}, doi = {10.1109/ISPDC.2012.45}, pages = {279 -- 285}, year = {2012}, language = {en} } @article{SchillingerRuessZanderetal.2012, author = {Schillinger, Dominik and Ruess, Martin and Zander, Nils and Bazilevs, Yuri and D{\"u}ster, Alexander and Rank, Ernst}, title = {Small and large deformation analysis with the p- and B-spline versions of the Finite Cell Method}, series = {Computational Mechanics}, volume = {50}, journal = {Computational Mechanics}, number = {4}, publisher = {Springer}, issn = {1432-0924}, doi = {10.1007/S00466-012-0684-Z}, pages = {445 -- 478}, year = {2012}, language = {en} } @article{RuessSchillingerBazilevsetal.2013, author = {Ruess, Martin and Schillinger, Dominik and Bazilevs, Yuri and Varduhn, Vasco and Rank, Ernst}, title = {Weakly enforced essential boundary conditions for NURBS-embedded and trimmed NURBS geometries on the basis of the finite cell method}, series = {International Journal for Numerical Methods in Engineering}, volume = {95}, journal = {International Journal for Numerical Methods in Engineering}, number = {10}, publisher = {Wiley}, issn = {1097-0207}, doi = {10.1002/nme.4522}, pages = {811 -- 846}, year = {2013}, language = {en} }