TY - GEN A1 - Klein, Rupert A1 - Nadolski, Maikel A1 - Zenker, Christian A1 - Oevermann, Michael A1 - Paschereit, Christian Oliver T1 - Pressure gain combustion for gas turbines : analysis of a fully coupled engine model T2 - Journal of Engineering for Gas Turbines and Power N2 - The “Shockless Explosion Combustion” (SEC) concept for gas turbine combustors, introduced in 2014, approximates constant volume combustion (CVC) by harnessing acoustic confinement of auto-igniting gas packets. The resulting pressure waves simultaneously transmit combustion energy to a turbine plenum and facilitate the combustor's recharging against an average pressure gain. Challenges in actualizing an SEC-driven gas turbine include (i) the creation of charge stratifications for nearly homogeneous auto-ignition, (ii) protecting the turbocomponents from combustion-induced pressure fluctuations, (iii) providing evidence that efficiency gains comparable to those of CVC over deflagrative combustion can be realized, and (iv) designing an effective one-way intake valve. This work addresses challenges (i)–(iii) utilizing computational engine models incorporating a quasi-one-dimensional combustor, zero- and two-dimensional (2D) compressor and turbine plena, and quasi-stationary turbocomponents. Two SEC operational modes are identified which fire at roughly one and two times the combustors' acoustic frequencies. Results for SEC-driven gas turbines with compressor pressure ratios of 6:1 and 20:1 reveal 1.5-fold mean pressure gains across the combustors. Assuming ideally efficient compressors and turbines, efficiency gains over engines with deflagration-based combustors of 30% and 18% are realized, respectively. With absolute values of 52% and 66%, the obtained efficiencies are close to the theoretical Humphrey cycle efficiencies of 54% and 65% for the mentioned precompression ratios. Detailed thermodynamic cycle analyses for individual gas parcels suggest that there is room for further efficiency gains through optimized plenum and combustor designs. Y1 - 2024 U6 - https://doi.org/10.1115/1.4066348 SN - 0742-4795 VL - 147 IS - 2 PB - ASME International ER - TY - GEN A1 - Stich, Timo A1 - Linz, Christian A1 - Wallraven, Christian A1 - Cunningham, Douglas William A1 - Magnor, Marcus T1 - Perception-motivated interpolation of image sequences T2 - ACM Transactions and Applied Perception Y1 - 2011 SN - 1544-3965 VL - 8 IS - 2 SP - 1 EP - 25 ER - TY - CHAP A1 - Stich, Timo A1 - Linz, Christian A1 - Wallraven, Christian A1 - Cunningham, Douglas William A1 - Magnor, Marcus T1 - Perception-motivated Interpolation of Image Sequences T2 - Proceedings APGV 2008, Symposium on Applied Perception in Graphics and Visualization Los Angeles, California, August 9-10, 2008 Y1 - 2008 SN - 978-1-595-93981-4 SP - 97 EP - 106 PB - The Association for Computing Machinery CY - New York, NY ER - TY - GEN A1 - Butry, Lionel A1 - Förster, Annemarie A1 - Thiel, Christian A1 - Kopkow, Christian T1 - Erwartungen von Patienten mit unspezifischen Kreuzschmerzen an die physiotherapeutische Behandlung im ambulanten Setting T2 - 5. Forschungssymposium Physiotherapie, FSPT2022 Abstractband Y1 - 2022 UR - http://www.dgptw.org/symposien/fspt-2022/fspt2022-abstractband U6 - https://doi.org/10.26127/BTUOpen-5923 SP - 53 EP - 54 ER - TY - GEN A1 - Kopkow, Christian A1 - Bahns, Carolin A1 - Happe, Lisa A1 - Thiel, Christian T1 - Physical therapy for patients with low back pain in Germany: a survey of current practice T2 - World Confederation for Physical Therapy Congress 2019 Y1 - 2019 UR - https://www.abstractstosubmit.com/wcpt2019/archive/#/viewer/abstract/1339 ER - TY - GEN A1 - Schmitt, Jochen A1 - Lange, Toni A1 - Günther, Klaus-Peter A1 - Kopkow, Christian A1 - Rataj, Elisabeth A1 - Apfelbacher, Christian A1 - Aringer, Martin A1 - Böhle, Eckhardt A1 - Bork, Hartmut A1 - Dreinhöfer, Karsten E T1 - Indication Criteria for Total Knee Arthroplasty in Patients with Osteoarthritis - A Multi-perspective Consensus Study T2 - Zeitschrift fur Orthopadie und Unfallchirurgie Y1 - 2017 U6 - https://doi.org/10.1055/s-0043-115120 SN - 1864-6743 SN - 1864-6697 N1 - viele weitere Autor*innen VL - 155 IS - 5 SP - 539 EP - 548 ER - TY - GEN A1 - Braun, Tobias A1 - Thiel, Christian A1 - Ziller, Carina A1 - Rasche, Julia A1 - Bahns, Carolin A1 - Happe, Lisa A1 - Retzmann, Theresa A1 - Grüneberg, Christian T1 - Das Frailty-Syndrom in der ambulanten physiotherapeutischen Versorgung - eine Prävalenzstudie T2 - 17. Deutscher Kongress für Versorgungsforschung (DKVF) Y1 - 2018 UR - https://www.egms.de/static/en/meetings/dkvf2018/18dkvf379.shtml U6 - https://doi.org/10.13140/RG.2.2.12630.29760 ER - TY - GEN A1 - Braun, Tobias A1 - Thiel, Christian A1 - Ziller, Carina A1 - Rasche, Julia A1 - Bahns, Carolin A1 - Happe, Lisa A1 - Retzmann, Theresa A1 - Hansen, Svenja A1 - Grüneberg, Christian T1 - Die Prävalenz des Frailty-Syndroms in der ambulanten physiotherapeutischen Versorgung T2 - 2. Forschungssymposium Physiotherapie, 16. und 17. November 2017, Osnabrück, Abstractband Y1 - 2017 UR - http://www.dgptw.org/symposien/fspt-2017/fspt2017-abstractband SP - 21 EP - 22 ER - TY - GEN A1 - Bahns, Carolin A1 - Happe, Lisa A1 - Thiel, Christian A1 - Kopkow, Christian T1 - Physiotherapeutische Versorgungssituation von Patienten*innen mit Rückenschmerzen in Deutschland T2 - 2. Forschungssymposium Physiotherapie, 16. und 17. November 2017, Osnabrück, Abstractband Y1 - 2017 UR - http://www.dgptw.org/symposien/fspt-2017/fspt2017-abstractband SP - 44 ER - TY - GEN A1 - Winkler, Lätitia A1 - Kopkow, Christian A1 - Thiel, Christian T1 - Effekte von Medical Flossing auf patientenberichtete Endpunkte bei Patienten mit Kniebeschwerden T2 - 2. Forschungssymposium Physiotherapie, 16. und 17. November 2017, Osnabrück, Abstractband Y1 - 2017 UR - http://www.dgptw.org/symposien/fspt-2017/fspt2017-abstractband SP - 65 EP - 66 ER - TY - GEN A1 - Jinks, Clare A1 - Botto-van Bemden, Angie A1 - Bunzli, Samantha A1 - Bowden, Jocelyn A1 - Egerton, Thorlene A1 - Eyles, Jillian A1 - Foster, Nadine A1 - Healey, Emma L. A1 - Maddison, John A1 - O’Brien, Daniel A1 - Quicke, Jonathan G. A1 - Schiphof, Dieuwke A1 - Parry, Emma A1 - Thomas, Martin J. A1 - Holden, Melanie A. A1 - Allen, Kelli A1 - Babatunde, Opeyemi O. A1 - Bennel, Kim L. A1 - Berry, Alice A1 - Bierma-Zeinstra, Sita A1 - Callahan, Leigh A1 - Campbell, Laura A1 - Dziedzic, Krysia S. A1 - Finney, Andrew A1 - French, Helen P. A1 - Haber, Travis A1 - Hadley-Barrows, Tina A1 - Hall, Michelle A1 - Hawker, Gillian A1 - Henriksen, Marius A1 - Hinman, Rana S. A1 - Ho-Pham, Lan A1 - Hunter, David J. A1 - Lawford, Belinda J. A1 - Mallen, Christian D. A1 - McHugh, Gretl A. A1 - Kopkow, Christian A1 - Neogi, Tuhina A1 - Nicholls, Elaine A1 - Nicolson, Philippa J. A. A1 - Østerås, Nina A1 - Paskins, Zoe A1 - Protheroe, Joanne A1 - Roos, Ewa M. A1 - Runhaar, Jos A1 - Skou, Soren T. A1 - Simkins, Joanna A1 - Swaithes, Laura A1 - Thomas, Geraint A1 - Esch, Martin van der A1 - Whittaker, Jackie A1 - Zhang, Weiya T1 - Changing the narrative on osteoarthritis: A call for global action T2 - Osteoarthritis and Cartilage Y1 - 2024 U6 - https://doi.org/10.1016/j.joca.2024.02.004 SN - 1063-4584 VL - 32 IS - 4 SP - 414 EP - 420 ER - TY - GEN A1 - Lüdtke, Kerstin A1 - Schäfer, Axel A1 - Braun, Cordula A1 - Elsner, Bernhard A1 - Kopkow, Christian A1 - Grüneberg, Christian A1 - Ehrenbrusthoff, Katja A1 - Braun, Tobias T1 - Forschung erleben, Kontakte knüpfen und Impulse für die eigene Arbeit mitnehmen: Bericht vom Forschungssymposium Physiotherapie an der Hochschule für Gesundheit in Bochum und von der 1. Mitgliederversammlung der DGPTW T2 - Physioscience Y1 - 2017 U6 - https://doi.org/10.1055/s-0035-1567163 SN - 1860-3351 SN - 1860-3092 VL - 13 IS - 01 SP - 44 EP - 45 ER - TY - GEN A1 - Kaiser, Ulrike A1 - Kopkow, Christian A1 - Deckert, Stefanie A1 - Neustadt, Katrin A1 - Jacobi, Lena A1 - Cameron, Paul A1 - De Angelis, Valerio A1 - Apfelbacher, Christian A1 - Arnold, Bernhard A1 - Birch, Judy T1 - Developing a core outcome-domain set to assessing effectiveness of interdisciplinary multimodal pain therapy T2 - Pain Y1 - 2017 U6 - https://doi.org/10.1097/j.pain.0000000000001129 SN - 0304-3959 SN - 1872-6623 N1 - viele weitere Autor*innen VL - 159 IS - 4 SP - 673 EP - 683 ER - TY - GEN A1 - Braun, Tobias A1 - Thiel, Christian A1 - Ziller, Carina A1 - Rasche, Julia A1 - Bahns, Carolin A1 - Happe, Lisa A1 - Retzmann, Theresa A1 - Grüneberg, Christian T1 - Prevalence of frailty in older adults in outpatient physiotherapy in an urban region in the western part of Germany : a cross-sectional study T2 - BMJ Open Y1 - 2019 U6 - https://doi.org/10.1136/bmjopen-2018-027768 SN - 2044-6055 VL - 9 IS - 6 ER - TY - GEN A1 - Wienke, Alisa Katharina A1 - Thiel, Christian A1 - Kopkow, Christian T1 - Effekte von Medical Flossing bei Patienten mit Schulterbeschwerden – Randomisierte kontrollierte Pilotstudie T2 - Physioscience Y1 - 2020 U6 - https://doi.org/10.1055/a-1078-6882 SN - 1860-3092 SN - 1860-3351 VL - 16 IS - 1 SP - 5 EP - 15 ER - TY - GEN A1 - Grüneberg, Christian A1 - Braun, Tobias A1 - Bahns, Carolin A1 - Thiel, Christian T1 - Diagnostik und Intervention bei älteren Menschen mit Frailty : ein Fallbericht T2 - Zeitschrift für Physiotherapeuten Y1 - 2018 SN - 1614-0397 VL - 70 IS - 9 SP - 33 EP - 43 ER - TY - GEN A1 - Butry, Lionel A1 - Förster, Annemarie A1 - Thiel, Christian A1 - Kopkow, Christian T1 - Erwartungen von Patient*innen mit unspezifischen Kreuzschmerzen an die physiotherapeutische Behandlung im ambulanten Setting T2 - Physioscience Y1 - 2021 U6 - https://doi.org/10.1055/a-1331-6569 SN - 1860-3351 SN - 1860-3092 VL - 17 IS - 3 SP - 121 EP - 129 ER - TY - GEN A1 - Bahns, Carolin A1 - Happe, Lisa A1 - Thiel, Christian A1 - Kopkow, Christian T1 - Physical therapy for patients with low back pain in Germany: a survey of current practice T2 - BMC musculoskeletal disorders Y1 - 2021 U6 - https://doi.org/10.1186/s12891-021-04422-2 SN - 1471-2474 VL - 22 IS - 1 ER - TY - GEN A1 - Braun, Tobias A1 - Thiel, Christian A1 - Peter, Raphael A1 - Bahns, Carolin A1 - Büchele, Gisela A1 - Rapp, Kilian A1 - Becker, Clemens A1 - Grüneberg, Christian T1 - Association of clinical outcome assessments of mobility capacity and incident disability in community-dwelling older adults – a systematic review and met-analysis T2 - Ageing Research Reviews Y1 - 2022 U6 - https://doi.org/10.1016/j.arr.2022.101704 SN - 1872-9649 VL - 81 ER - TY - GEN A1 - Kanzler, Michael A1 - Böhm, Christian A1 - Quinkenstein, Ansgar A1 - Steinke, Christian A1 - Landgraf, Dirk T1 - Wuchsleistung der Robinie auf Lausitzer Rekultivierungsstandorten T2 - AFZ - der Wald Y1 - 2014 IS - 5 SP - 35 EP - 37 ER - TY - GEN A1 - Bärwolff, Manuela A1 - Vetter, Armin A1 - Böhm, Christian A1 - Hoffmann, Jörg A1 - Schmidt, Christian T1 - Projekt AgroForstEnergie ? Was bringen Streifen-Kup? T2 - energie pflanzen Y1 - 2011 SN - 1866-3036 IS - 2 SP - 10 EP - 12 ER - TY - GEN A1 - Reiter, Sebastian A1 - Ratzke, Markus A1 - Nitsch, Paul-Gregor A1 - Mai, Christian A1 - Spirito, Davide A1 - Corley-Wiciak, Agnieszka Anna A1 - Wenger, Christian A1 - Fischer, Inga A. T1 - Optical response of titanium nitride plasmonic nanohole arrays : impact of square and hexagonal array geometry, pitch, and nanohole diameter T2 - Plasmonics N2 - Plasmonic nanohole arrays (NHAs) exhibit extraordinary optical transmission (EOT) evoked by resonant excitation of surface plasmons at an excitation wavelength, which is highly sensitive to changes in refractive index in the surrounding dielectric. This can enable the use of plasmonic NHAs in on-chip refractive index sensors. Such sensors can be realized on the cost-effective silicon platform by the integration of a plasmonic NHA and a Ge photodetector, provided that complementary metal–oxide–semiconductor (CMOS)-compatible materials are used for their fabrication. Titanium nitride (TiN) as a biocompatible and CMOS-compatible plasmonic transition metal nitride is well-suited for integration on the silicon platform; however, the comparatively large losses within the material require geometry optimization strategies in order to improve the optical properties of TiN NHAs for sensing. In this work, we investigated different TiN NHA geometries both in experiment and simulation. We extensively characterized square and hexagonal arrays with varying pitches and nanohole diameters and provide a detailed comparison of their optical properties. We also discuss characterization results for surface refractive index changes imposed by depositing a thin Al2O3 layer on top of the NHAs. While we do not observe a clear advantage of hexagonal arrays compared to square arrays for sensing, our results highlight the importance of geometry optimization for TiN NHAs integrated with devices. KW - Plasmonic nanohole array KW - Titanium nitride KW - Hexagonal array KW - Square array KW - Nanohole diameters Y1 - 2025 UR - https://link.springer.com/article/10.1007/s11468-025-02934-4 U6 - https://doi.org/10.1007/s11468-025-02934-4 VL - 20 SP - 8825 EP - 8834 PB - Springer CY - New York, NY ER -