TY - GEN A1 - Zylla, Maura M. A1 - Brachmann, Johannes A1 - Lewalter, Thorsten A1 - Kuck, Karl-Heinz A1 - Andresen, Dietrich A1 - Willems, Stephan A1 - Spitzer, Stefan G. A1 - Straube, Florian A1 - Schumacher, Burghard A1 - Eckardt, Lars A1 - Hochadel, Matthias A1 - Senges, Jochen A1 - Katus, Hugo A. A1 - Dierk, Thomas T1 - Symptomatic arrhythmias after catheter ablation of atrioventricular nodal reentrant tachycardia (AVNRT): results from the German Ablation Registry T2 - Clinical Research in Cardiology KW - Catheter ablation, AVNRT, Complications, Registry, Long-term follow-up Y1 - 2020 U6 - https://doi.org/https://doi.org/10.1007/s00392-019-01576-x SN - 1861-0692 SN - 1861-0684 VL - 109 IS - 10 SP - 858 EP - 868 PB - Springer Nature Switzerland AG ER - TY - BOOK A1 - Heinkele, Thomas A1 - Voigt, Hans-Jürgen A1 - Jahnke, Christoph A1 - Hannappel, Stephan A1 - Donat, E. T1 - Charakterisierung der Empfindlichkeit von Grundwasserkörpern Y1 - 2002 PB - Umweltbundesamt CY - Berlin ER - TY - GEN A1 - Schäfer, Stephan A1 - Berger, Ulrich A1 - Schöttke, Dirk A1 - Kämpfe, Thomas T1 - Energieorientierte Prozessführung T2 - atp edition - Automatisierungstechnische Praxis Y1 - 2014 SN - 2190-4111 VL - 54 IS - 10 SP - 24 EP - 31 ER - TY - CHAP A1 - Rößler, Thomas A1 - Rogge, Stephan A1 - Hentschel, Christian T1 - A case study: Mobile augmented reality system for visualization of large buildings T2 - Consumer Electronics - Berlin (ICCE-Berlin), 2011 IEEE International Conference on Consumer Electronics, September 6 - 8, 2011, Berlin, Germany Y1 - 2011 SN - 978-1-457-70234-1 SN - 978-1-4577-0233-4 SP - 311 EP - 314 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Schäfer, Stephan A1 - Berger, Ulrich A1 - Schöttke, Dirk A1 - Kämpfe, Thomas T1 - Das Zeitverhalten verteilter Anlagen T2 - atp edition - Automatisierungstechnische Praxis Y1 - 2012 SN - 2190-4111 VL - 54 IS - 10 SP - 36 EP - 43 ER - TY - GEN A1 - Strobel, Carsten A1 - Alvarado Chavarin, Carlos A1 - Völkel, Sandra A1 - Jahn, Andreas A1 - Hiess, Andre A1 - Knaut, Martin A1 - Albert, Matthias A1 - Wenger, Christian A1 - Steinke, Olaff A1 - Stephan, Ulf A1 - Röhlecke, Sören A1 - Mikolajick, Thomas T1 - Enhanced Electrical Properties of Optimized Vertical Graphene-Base Hot Electron Transistors T2 - ACS Applied Electronic Materials N2 - The arrival of high-mobility two-dimensional materials like graphene leads to the renaissance of former vertical semiconductor–metal–semiconductor (SMS) hot electron transistors. Because of the monolayer thickness of graphene, improved SMS transistors with a semimetallic graphene-base electrode are now feasible for high-frequency applications. In this study we report about a device that consists of amorphous silicon, graphene, and crystalline silicon. For the first time, this device is fabricated by a four-mask lithography process which leads to significant improvements in the device performance. A strongly increased common-emitter current gain of 2% could be achieved while the on–off ratio improved to 1.6 × 105, which is already higher than predicted theoretically. This could be mainly attributed to better interface characteristics and decreased lateral dimensions of the devices. A cutoff frequency of approximately 26 MHz could be forecasted based on the DC measurements of the device. KW - Graphene KW - Transistor Y1 - 2023 U6 - https://doi.org/10.1021/acsaelm.2c01725 SN - 2637-6113 VL - 5 IS - 3 SP - 1670 EP - 1675 ER - TY - GEN A1 - Simon, Sylvio A1 - Taeschner, Dirk A1 - Rieder, Thomas A1 - Schneider, Robert A1 - Hernschier, Stephan A1 - Magister, Jan A1 - Fritsch, Tim A1 - Abbasov, Ilgar A1 - Turabov, Dashqin A1 - Globa, Svetlana T1 - Investigation in characteristics of belt conveyors and their idler rollers for coal-fired power plants T1 - Исследования характеристик ленточных конвейеров и их несущих роликов для угольных электростанций T2 - Safety and Reliability of Power Industry N2 - Belt conveyors are highly efficient systems used in mining and other industries to transport bulk materials, mainly brown coal and overburden, over distances ranging from short distances to several kilometres. For technical reasons, their operation is associated with noise emissions. During inspections and maintenance this can lead to increased noise exposure of employees. In the vicinity of residential buildings or in areas needing protection, exceeding the emission limits can lead to a temporary restriction of the operation of these high performance installations. Measures are required to reduce the noise impact primarily at the source or in the immediate vicinity. The acoustic and mechanical parameters are investigated on a test bench at the Technical University of Brandenburg (BTU) Cottbus-Senftenberg as part of the drive assembly tests in cooperation with LEAG. The stages of these tests are: Run-up test. In this test the supporting roller is accelerated under test load to a circumferential speed of 10 m/s and the sound pressure level is recorded. This makes it possible to calculate the sound emission as a function of the peripheral speed; Recording the geometry of the idler gear. An accurate description of the geometry of the idler housing allows conclusions to be drawn about the possible causes of excitation. The defined characteristics serve to quantify the acoustic effect of the driven rollers and derive specifications for use in belt conveyor systems. Based on the special requirements to the planned belt conveyor system, an adapted selection of low-noise idler rollers can be made at an early stage on the basis of specified parameters and confirmed test results. KW - belt conveyor KW - noise reduction KW - test stand KW - sound pressure level Y1 - 2021 U6 - https://doi.org/10.24223/1999-5555-2021-14-3-125-133 SN - 2542-2057 SN - 1999-5555 VL - 14 IS - 3 SP - 125 EP - 133 ER -