TY - JOUR A1 - Heuermann, Holger A1 - Harzheim, Thomas A1 - Cronenbroeck, Tobias T1 - First SIMO harmonic radar based on the SFCW concept and the HR transfer function JF - Remote sensing N2 - This paper presents a new SIMO radar system based on a harmonic radar (HR) stepped frequency continuous wave (SFCW) architecture. Simple tags that can be electronically individually activated and deactivated via a DC control voltage were developed and combined to form an MO array field. This HR operates in the entire 2.45 GHz ISM band for transmitting the illumination signal and receives at twice the stimulus frequency and bandwidth centered around 4.9 GHz. This paper presents the development, the basic theory of a HR system for the characterization of objects placed into the propagation path in-between the radar and the reflectors (similar to a free-space measurement with a network analyzer) as well as first measurements performed by the system. Further detailed measurement series will be made available later on to other researchers to develop AI and machine learning based signal processing routines or synthetic aperture radar algorithms for imaging, object recognition, and feature extraction. For this purpose, the necessary information is published in this paper. It is explained in detail why this SIMO-HR can be an attractive solution augmenting or replacing existing systems for radar measurements in production technology for material under test measurements and as a simplified MIMO system. The novel HR transfer function, which is a basis for researchers and developers for material characterization or imaging algorithms, is introduced and metrologically verified in a well traceable coaxial setup. KW - MUT measurement; scanner KW - transponder KW - SFCW KW - harmonic radar KW - nonlinear radar Y1 - 2021 U6 - https://doi.org/10.3390/rs13245088 SN - 2072-4292 N1 - This article belongs to the Special Issue "Nonlinear Junction Detection and Harmonic Radar" VL - 13 IS - 24 PB - MDPI CY - Basel ER - TY - JOUR A1 - Göttsche, Joachim A1 - Hoffschmidt, Bernhard A1 - Alexopoulos, Spiros A1 - Funke, J. A1 - Schwarzbözl, P. T1 - First Simulation Results for the Hybridization of Small Solar Power Tower Plants JF - EuroSun 2008 : 1st International Conference on Solar Heating, Cooling and Buildings, 2008-10-07 - 2008-10-10, Lissabon (Portugal). Vol. 1 Y1 - 2008 SN - 978-1-61782-228-5 N1 - Kurzfassung unter http://elib.dlr.de/56357/ SP - 1299 EP - 1306 PB - Sociedade Portuguesa De Energia Solar (SPES) CY - Lisbon ER - TY - JOUR A1 - Umutlu, L. A1 - Maderwald, S. A1 - Kinner, S. A1 - Kraff, O. A1 - Bitz, Andreas A1 - Orzada, S. A1 - Johst, S. A1 - Wrede, K. A1 - Forsting, M. A1 - Ladd, M. E. A1 - Lauenstein, T. C. A1 - Quick, H. H. T1 - First-pass contrast-enhanced renal MRA at 7 Tesla: initial results JF - European Radiology Y1 - 2013 U6 - https://doi.org/10.1007/s00330-012-2666-0 SN - 1432-1084 VL - 23 IS - 4 SP - 1059 EP - 1066 PB - Springer CY - Berlin ER - TY - CHAP A1 - Oertel, M. A1 - Bung, Daniel Bernhard A1 - Schlenkhoff, Andreas T1 - Flash flood awareness and prevention T2 - Water engineering for sustainable environment : 33rd IAHR congress ; 9 - 14 August 2009, Vancouver, British Columbia, Canada Y1 - 2009 SN - 9789078046080 SP - 1 CD-ROM ER - TY - CHAP A1 - Bung, Daniel Bernhard A1 - Oertel, M. A1 - Schlenkhoff, A. A1 - Schlurmann, Torsten ED - Obrusnik, Ivan T1 - Flash flood awareness and prevention in Germany T2 - Early warning for flash floods : international workshop, Praha 2011 : workshop proceedings Y1 - 2010 SN - 978-80-86690-91-9 SP - 34 EP - 40 ER - TY - JOUR A1 - Engel, Mareike A1 - Bayer, Hendrik A1 - Holtmann, Dirk A1 - Tippkötter, Nils A1 - Ulber, Roland T1 - Flavin secretion of Clostridium acetobutylicum in a bioelectrochemical system - Is an iron limitation involved? JF - Bioelectrochemistry Y1 - 2019 U6 - https://doi.org/10.1016/j.bioelechem.2019.05.014 SN - 1567-5394 IS - In Press, Accepted Manuscript PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Vahidpour, Farnoosh A1 - Oberländer, Jan A1 - Schöning, Michael Josef T1 - Flexible Calorimetric Gas Sensors for Detection of a Broad Concentration Range of Gaseous Hydrogen Peroxide: A Step Forward to Online Monitoring of Food-Package Sterilization Processes JF - Phys. Status Solidi A N2 - In this study, flexible calorimetric gas sensors are developed for specificdetection of gaseous hydrogen peroxide (H₂O₂) over a wide concentrationrange, which is used in sterilization processes for aseptic packaging industry.The flexibility of these sensors is an advantage for identifying the chemical components of the sterilant on the corners of the food boxes, so-called “coldspots”, as critical locations in aseptic packaging, which are of great importance. These sensors are fabricated on flexible polyimide films by means of thin-film technique. Thin layers of titanium and platinum have been deposited on polyimide to define the conductive structures of the sensors. To detect the high-temperature evaporated H₂O₂, a differential temperature set-up is proposed. The sensors are evaluated in a laboratory-scaled sterilizationsystem to simulate the sterilization process. The concentration range of the evaporated H₂O₂ from 0 to 7.7% v/v was defined and the sensors have successfully detected high as well as low H₂O₂ concentrations with a sensitivity of 5.04 °C/% v/v. The characterizations of the sensors confirm their precise fabrication, high sensitivity and the novelty of low H₂O₂ concentration detections for future inline monitoring of food-package sterilization. Y1 - 2018 U6 - https://doi.org/10.1002/pssa.201800044 VL - 215 IS - 15 PB - Wiley-VCH CY - Weinheim ER - TY - CHAP A1 - Starke, Günther A1 - Kunkel, Thomas A1 - Hahn, Daniel T1 - Flexible collaboration and control of heterogeneous mechatronic devices and systems by means of an event-driven, SOA-based automation concept T2 - 2013 IEEE International Conference on Industrial Technologies (ICIT-13) Y1 - 2013 SN - 978-1-4673-4567-5 ; 978-1-4673-4569-9 SP - 1982 EP - 1987 PB - IEEE CY - Piscataway, NJ ER - TY - JOUR A1 - Wagner, Torsten A1 - Miyamoto, K. A1 - Werner, Frederik A1 - Schöning, Michael Josef A1 - Yoshinobu, T. T1 - Flexible electrochemical imaging with “zoom-in” functionality by using a new type of light-addressable potentiometric sensor Y1 - 2011 N1 - 2011 16th International Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS) , Date: 5-9 June 2011 SP - 2133 EP - 2135 PB - IEEE CY - New York ER - TY - JOUR A1 - Funke, Harald A1 - Beckmann, Nils T1 - Flexible fuel operation of a Dry-Low-NOx Micromix Combustor with Variable Hydrogen Methane Mixture JF - International Journal of Gas Turbine, Propulsion and Power Systems N2 - The role of hydrogen (H2) as a carbon-free energy carrier is discussed since decades for reducing greenhouse gas emissions. As bridge technology towards a hydrogen-based energy supply, fuel mixtures of natural gas or methane (CH4) and hydrogen are possible. The paper presents the first test results of a low-emission Micromix combustor designed for flexible-fuel operation with variable H2/CH4 mixtures. The numerical and experimental approach for considering variable fuel mixtures instead of recently investigated pure hydrogen is described. In the experimental studies, a first generation FuelFlex Micromix combustor geometry is tested at atmospheric pressure at gas turbine operating conditions corresponding to part- and full-load. The H2/CH4 fuel mixture composition is varied between 57 and 100 vol.% hydrogen content. Despite the challenges flexible-fuel operation poses onto the design of a combustion system, the evaluated FuelFlex Micromix prototype shows a significant low NOx performance Y1 - 2022 SN - 1882-5079 VL - 13 IS - 2 SP - 1 EP - 7 ER - TY - CHAP A1 - Funke, Harald A1 - Beckmann, Nils T1 - Flexible Fuel Operation of a Dry-Low-Nox Micromix Combustor with Variable Hydrogen Methane Mixtures T2 - Proceedings of International Gas Turbine Congress 2019 Tokyo, November 17-22, 2019, Tokyo, Japan Y1 - 2019 SN - 978-4-89111-010-9 N1 - IGTC-2019-013 ER - TY - CHAP A1 - Oberländer, Jan A1 - Kirchner, Patrick A1 - Keusgen, M. A1 - Schöning, Michael Josef T1 - Flexible polyimide-based calorimetric gas sensors for monitoring hy-drogen peroxide in sterilisation processes of aseptic filling machines T2 - Sensoren und Messsysteme 2014 ; Beiträge der 17. GMA/ITG-Fachtagung vom 3. bis 4. Juni 2014 in Nürnberg. (ITG-Fachbericht ; 250) Y1 - 2014 SN - 978-3-8007-3622-5 SP - 1 EP - 4 PB - VDE-Verl. CY - Düsseldorf ER - TY - GEN A1 - Keimer, Jona A1 - Girbig, Leo A1 - Mayntz, Joscha A1 - Tegtmeyer, Philipp A1 - Wendland, Frederik A1 - Dahman, Peter A1 - Fisher, Alex A1 - Dorrington, Graham T1 - Flight mission optimization for eco-efficiency in consideration of electric regeneration and atmospheric conditions T2 - AIAA AVIATION 2022 Forum N2 - The development and operation of hybrid or purely electrically powered aircraft in regional air mobility is a significant challenge for the entire aviation sector. This technology is expected to lead to substantial advances in flight performance, energy efficiency, reliability, safety, noise reduction, and exhaust emissions. Nevertheless, any consumed energy results in heat or carbon dioxide emissions and limited electric energy storage capabilities suppress commercial use. Therefore, the significant challenges to achieving eco-efficient aviation are increased aircraft efficiency, the development of new energy storage technologies, and the optimization of flight operations. Two major approaches for higher eco-efficiency are identified: The first one, is to take horizontal and vertical atmospheric motion phenomena into account. Where, in particular, atmospheric waves hold exciting potential. The second one is the use of the regeneration ability of electric aircraft. The fusion of both strategies is expected to improve efficiency. The objective is to reduce energy consumption during flight while not neglecting commercial usability and convenient flight characteristics. Therefore, an optimized control problem based on a general aviation class aircraft has to be developed and validated by flight experiments. The formulated approach enables a development of detailed knowledge of the potential and limitations of optimizing flight missions, considering the capability of regeneration and atmospheric influences to increase efficiency and range. Y1 - 2022 U6 - https://doi.org/10.2514/6.2022-4118 N1 - AIAA AVIATION 2022 Forum, June 27-July 1, 2022 Chicago, IL & Virtual PB - AIAA CY - Reston, Va. ER - TY - JOUR A1 - Dachwald, Bernd A1 - Schmidt, Tanja D. A1 - Seboldt, Wolfgang A1 - Auweter-Kurtz, T1 - Flight Opportunities from Mars to Earth for Piloted Missions Using Continuous Thrust Propulsion / Schmidt, Tanja D. ; Dachwald, Bernd ; Seboldt, Wolfgang ; Auweter-Kurtz, Monika Y1 - 2003 N1 - 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 20-23 July 2003, Huntsville, Alabama ; AIAA 2003-4573 SP - 1 EP - 9 PB - - ER - TY - JOUR A1 - Scholz, A. A1 - Ley, Wilfried A1 - Dachwald, Bernd A1 - Miau, J. J. A1 - Juang, J. C. T1 - Flight results of the COMPASS-1 picosatellite mission JF - Acta Astronautica. 67 (2010), H. 9-10 Y1 - 2010 SN - 0094-5765 SP - 1289 EP - 1298 ER - TY - JOUR A1 - Jung, Alexander A1 - Staat, Manfred A1 - Müller, Wolfram T1 - Flight style optimization in ski jumping on normal, large, and ski flying hills JF - Journal of biomechanics Y1 - 2013 SN - 1873-2380 (E-Journal); 0021-9290 (Print) N1 - Corrigendum to “Flight style optimization in ski jumping on normal, large, and ski flying hills” [J. Biomech 47 (2014) 716-722] Journal of Biomechanics, 2018;71:313. VL - Vol. 47 IS - Iss. 3 SP - 716 EP - 722 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Schildt, P. A1 - Braun, Carsten A1 - Marcocca, P. T1 - Flight testing the extra 330LE flying testbed T2 - 48th Annual International Symposium of the Society of Flight Test Engineers 2017 Y1 - 2017 SN - 978-151085387-4 N1 - 48th Annual International Symposium of the Society of Flight Test Engineers 2017, SFTE 2017; Destin; United States; 30 October 2017 through 2 November 2017 SP - 349 EP - 362 ER - TY - CHAP A1 - Ohndorf, Andreas A1 - Dachwald, Bernd A1 - Seboldt, Wolfgang A1 - Schartner, Karl-Heinz T1 - Flight times to the heliopause using a combination of solar and radioisotope electric propulsion T2 - 32nd International Electric Propulsion Conference N2 - We investigate the interplanetary flight of a low-thrust space probe to the heliopause,located at a distance of about 200 AU from the Sun. Our goal was to reach this distance within the 25 years postulated by ESA for such a mission (which is less ambitious than the 15-year goal set by NASA). Contrary to solar sail concepts and combinations of allistic and electrically propelled flight legs, we have investigated whether the set flight time limit could also be kept with a combination of solar-electric propulsion and a second, RTG-powered upper stage. The used ion engine type was the RIT-22 for the first stage and the RIT-10 for the second stage. Trajectory optimization was carried out with the low-thrust optimization program InTrance, which implements the method of Evolutionary Neurocontrol,using Artificial Neural Networks for spacecraft steering and Evolutionary Algorithms to optimize the Neural Networks’ parameter set. Based on a parameter space study, in which the number of thrust units, the unit’s specific impulse, and the relative size of the solar power generator were varied, we have chosen one configuration as reference. The transfer time of this reference configuration was 29.6 years and the fastest one, which is technically more challenging, still required 28.3 years. As all flight times of this parameter study were longer than 25 years, we further shortened the transfer time by applying a launcher-provided hyperbolic excess energy up to 49 km2/s2. The resulting minimal flight time for the reference configuration was then 27.8 years. The following, more precise optimization to a launch with the European Ariane 5 ECA rocket reduced the transfer time to 27.5 years. This is the fastest mission design of our study that is flexible enough to allow a launch every year. The inclusion of a fly-by at Jupiter finally resulted in a flight time of 23.8 years,which is below the set transfer-time limit. However, compared to the 27.5-year transfer,this mission design has a significantly reduced launch window and mission flexibility if the escape direction is restricted to the heliosphere’s “nose". KW - low-thrust trajectory optimization KW - heliosphere KW - ion propulsion Y1 - 2011 N1 - IEPC-2011-051 32nd International Electric Propulsion Conference,September 11–15, 2011 Wiesbaden, Germany SP - 1 EP - 12 ER - TY - CHAP A1 - Grundmann, Jan Thimo A1 - Bauer, Waldemar A1 - Boden, Ralf A1 - Ceriotti, Matteo A1 - Chand, Suditi A1 - Cordero, Federico A1 - Dachwald, Bernd A1 - Dumont, Etienne A1 - Grimm, Christian D. A1 - Heiligers, Jeannette A1 - Herčík, David A1 - Hérique, Alain A1 - Ho, Tra-Mi A1 - Jahnke, Rico A1 - Kofman, Wlodek A1 - Lange, Caroline A1 - Lichtenheldt, Roy A1 - McInnes, Colin A1 - Meß, Jan-Gerd A1 - Mikschl, Tobias A1 - Mikulz, Eugen A1 - Montenegro, Sergio A1 - Moore, Iain A1 - Pelivan, Ivanka A1 - Peloni, Alessandro A1 - Plettemeier, Dirk A1 - Quantius, Dominik A1 - Reershemius, Siebo A1 - Renger, Thomas A1 - Riemann, Johannes A1 - Rogez, Yves A1 - Ruffer, Michael A1 - Sasaki, Kaname A1 - Schmitz, Nicole A1 - Seboldt, Wolfgang A1 - Seefeldt, Patric A1 - Spietz, Peter A1 - Spröwitz, Tom A1 - Sznajder, Maciej A1 - Tóth, Norbert A1 - Vergaaij, Merel A1 - Viavattene, Giulia A1 - Wejmo, Elisabet A1 - Wiedemann, Carsten A1 - Wolff, Friederike A1 - Ziach, Christian T1 - Flights are ten a sail – Re-use and commonality in the design and system engineering of small spacecraft solar sail missions with modular hardware for responsive and adaptive exploration T2 - 70th International Astronautical Congress (IAC) KW - system engineering KW - small solar system body characterisation KW - small spacecraft solar sail KW - small spacecraft asteroid lander KW - responsive space Y1 - 2019 SN - 9781713814856 N1 - 70th International Astronautical Congress (IAC), Washington D.C., United States, 21-25 October 2019 SP - 1 EP - 7 ER - TY - CHAP A1 - Döring, Bernd A1 - Kuhnhenne, Markus A1 - Feldmann, Markus T1 - Floor systems - key elements for sustainable multi-storey buildings T2 - SB11 Helsinki World Sustainable Building Conference : 18. - 21.10.2011 Y1 - 2011 SP - 1 EP - 6 ER - TY - CHAP A1 - Feldmann, M. A1 - Döring, Bernd A1 - Pyschny, D. T1 - Floor systems; Sustainabilty analyses and assessments of steel bridges T2 - Sustainable steel buildings : a practical guide for structures and envelopes Y1 - 2016 SN - 978-1-118-74079-8 (PDF) SN - 978-1-118-74111-5 SP - 198 EP - 223 PB - Wiley Blackwell CY - Chichester, West Sussex ER - TY - JOUR A1 - Wang, J. A1 - Krause, R. A1 - Block, K. A1 - Musameh, M. A1 - Mulchandani, A. A1 - Schöning, Michael Josef T1 - Flow injection amperometric detection of OP nerve agents based on organophosphorus-hydrolase biosensor detector JF - Biosensors & Bioelectronics. 18 (2003), H. 2-3 Y1 - 2003 SN - 0956-5663 SP - 255 EP - 260 ER - TY - JOUR A1 - Gerhardt, Hans Joachim A1 - Kramer, C. A1 - Janssen, L.-J. T1 - Flow studies of an open jet wind tunnel and comparison with closed and slotted walls Y1 - 1985 N1 - Konferenz-Einzelbericht: 6th Colloquium on Industrial Aerodynamics, Road Vehicle Aerodynamics, Fachhochschule Aachen, 19.-21.6.1985 SP - 7 EP - 28 ER - TY - JOUR A1 - Kaminsky, Randolph A1 - Simons, Antoine A1 - Gatzweiler, Karl-Heinz A1 - Weber, Hans-Joachim T1 - Flow visualization by means of PIV of an artificial aortic heart valve fixed into a mock aorta JF - Acta Mechanica Slovaka 2-A. 9 (2005) Y1 - 2005 SP - 343 EP - 348 ER - TY - JOUR A1 - Dues, M. A1 - Gebhardt, Andreas A1 - Kallweit, Stephan A1 - Scheffler, T. A1 - Siekmann, H. A1 - Uchiyama, T. T1 - Flow Visualization in a Cavitating Flow JF - Proceedings of the German-Japanese Symposium on Multi-Phase Flow : Karlsruhe, Germany, August 23 - 25, 1994 / comp. by U. Müller ... Y1 - 1994 N1 - German Japanese Symposium on Multi-Phase Flow <1994, Karlsruhe> ; Kernforschungszentrum Karlsruhe ; 5389 SP - 391 EP - 402 PB - Kernforschungszentrum Karlsruhe CY - Karlsruhe ER - TY - JOUR A1 - Kaminsky, Radoslav A1 - Kallweit, Stephan A1 - Weber, Hans-Joachim A1 - Claessens, Tom A1 - Jozwik, Krzystof A1 - Verdonck, Pascal T1 - Flow visualization through two types of aortic prosthetic heart valves using stereoscopic high-speed particle image velocimetry JF - Artificial organs. 31 (2007), H. 12 Y1 - 2007 SN - 1525-1594 SP - 869 EP - 879 ER - TY - JOUR A1 - Poghossian, Arshak A1 - Yoshinobu, Tatsuo A1 - Schöning, Michael Josef T1 - Flow-velocity microsensors based on semiconductor field-effect structures JF - Sensors. 3 (2003), H. 7 Y1 - 2003 SN - 1424-8220 SP - 202 EP - 212 ER - TY - CHAP A1 - Bung, Daniel Bernhard A1 - Valero, Daniel T1 - FlowCV - An open-source toolbox for computer vision applications in turbulent flows T2 - Proceedings of the 37th IAHR World Congress August 13 – 18, 2017, Kuala Lumpur, Malaysia Y1 - 2017 SN - 2521-716X SP - 5356 EP - 5365 ER - TY - CHAP A1 - Breitbach, Gerd A1 - Alexopoulos, Spiros A1 - Hoffschmidt, Bernhard T1 - Fluid flow in porous ceramic multichannel crossflower filter modules Y1 - 2007 PB - COMSOL Inc. CY - Burlington, Mass. ER - TY - JOUR A1 - Artmann, Gerhard A1 - Hueck, Isgard S. A1 - Rossiter, Katharine A1 - Schmid-Schönbein, Geert W. T1 - Fluid Shear Attenuates Endothelial Pseudopodia Formation into the Capillary Lumen / Hueck, Isgard S. ; Rossiter, Katharine ; Artman, Gerhard M. ; Schmid-Schönbein, Geert W. JF - Microcirculation. 15 (2008), H. 6 Y1 - 2008 SN - 1549-8719 SP - 531 EP - 542 ER - TY - CHAP A1 - Olaru, Alexandra Maria A1 - Kowalski, Julia A1 - Sethi, Vaishali A1 - Blümich, Bernhard T1 - Fluid Transport in Porous Media probed by Relaxation-Exchange NMR T2 - 2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec. Y1 - 2011 N1 - H12B-07; American Geophysical Union ER - TY - CHAP A1 - Kuhlen, Max A1 - Digel, Ilya ED - Erni, Daniel ED - Fischerauer, Alice ED - Himmel, Jörg ED - Seeger, Thomas ED - Thelen, Klaus T1 - Fluorescence signatures and detection limits of ubiquitous terrestrial bio-compounds T2 - 2nd YRA MedTech Symposium 2017 : June 8th - 9th / 2017 / Hochschule Ruhr-West Y1 - 2017 SN - 978-3-9814801-9-1 U6 - https://doi.org/10.17185/duepublico/43984 N1 - A young researchers track of the 7th IEEE Workshop & SENSORICA 2017 SP - 102 EP - 103 PB - Universität Duisburg-Essen CY - Duisburg ER - TY - JOUR A1 - Gebeshuber, Christoph A. A1 - Kornauth, Christoph A1 - Dong, Lihua A1 - Sierig, Ralph A1 - Seibler, Jost A1 - Reiss, Martina A1 - Tauber, Stefanie A1 - Bilban, Martin A1 - Wang, Shijun A1 - Kain, Renate A1 - Böhmig, Georg A. A1 - Moeller, Marcus J. A1 - Gröne, Hermann-Josef A1 - Englert, Christoph A1 - Martinez, Javier A1 - Kerjaschki, Dontscho T1 - Focal segmental glomerulosclerosis is induced by microRNA-193a and its downregulation of WT1 JF - Nature Medicine Y1 - 2013 U6 - https://doi.org/10.1038/nm.3142 SN - 1078-8956 VL - 19 IS - 4 SP - 481 EP - 487 ER - TY - JOUR A1 - Ferrein, Alexander A1 - Schiffer, Stefan A1 - Lakemeyer, Gerhard T1 - Football is coming Home / Schiffer, Stefan ; Ferrein, Alexander ; Lakemeyer, Gerhard JF - PCAR '06 Proceedings of the 2006 international symposium on Practical cognitive agents and robots Y1 - 2006 SN - 1-74052-130-7 SP - 39 EP - 50 PB - ACM CY - New York, NY ER - TY - JOUR A1 - Maus, Stefan A1 - Höfken, Hans-Wilhelm A1 - Schuba, Marko T1 - Forensic Analysis of Geodata in Android Smartphones Y1 - 2011 N1 - Cyberforensics 2011, Glasgow SP - 1 EP - 11 ER - TY - JOUR A1 - Kotter, Michael A1 - Hammon, Ulrich A1 - Riekert, Lothar T1 - Formation of ethene and propene from methanol on zeolite ZSM-5 II. Preparation of finished catalysts and operation of a fixed-bed pilot plant / U. Hammon ; M. Kotter ; L. Riekert JF - Applied catalysis. 37 (1988) Y1 - 1988 SN - 0166-9834 N1 - ISSN der E-Ausg.: 0166-9834 SP - 155 EP - 174 ER - TY - JOUR A1 - Fleischhaker, Robert A1 - Evers, Jörg T1 - Four-wave mixing enhanced white-light cavity JF - Physical Review A - Atomic, molecular, and optical physics Y1 - 2008 SN - 0556-2791 VL - 78 IS - 5 SP - 051802(R) ER - TY - JOUR A1 - Schwab, Lukas A1 - Hojdis, Nils A1 - Lacayo, Jorge A1 - Wilhelm, Manfred T1 - Fourier-Transform Rheology of Unvulcanized, Carbon Black Filled Styrene Butadiene Rubber JF - Macromolecular Materials and Engineering N2 - Rubber materials filled with reinforcing fillers display nonlinear rheological behavior at small strain amplitudes below γ0 < 0.1. Nevertheless, rheological data are analyzed mostly in terms of linear parameters, such as shear moduli (G′, G″), which loose their physical meaning in the nonlinear regime. In this work styrene butadiene rubber filled with carbon black (CB) under large amplitude oscillatory shear (LAOS) is analyzed in terms of the nonlinear parameter I3/1. Three different CB grades are used and the filler load is varied between 0 and 70 phr. It is found that I3/1(φ) is most sensitive to changes of the total accessible filler surface area at low strain amplitudes (γ0 = 0.32). The addition of up to 70 phr CB leads to an increase of I3/1(φ) by a factor of more than ten. The influence of the measurement temperature on I3/1 is pronounced for CB levels above the percolation threshold. Y1 - 2016 U6 - https://doi.org/10.1002/mame.201500356 SN - 1439-2054 VL - 301 IS - 4 SP - 457 EP - 468 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Wagner, Torsten A1 - Werner, Frederik A1 - Miyamoto, Ko-ichiro A1 - Ackermann, Hans-Josef A1 - Yoshinobu, Tatsuo A1 - Schöning, Michael Josef T1 - FPGA-based LAPS device for the flexible design of sensing sites on functional interfaces JF - Physica Status Solidi (A). 207 (2010), H. 4 Y1 - 2010 SN - 1862-6300 N1 - Special Issue: Engineering of Functional Interfaces EnFI 2009 SP - 844 EP - 849 ER - TY - GEN A1 - Möhring, S. A1 - Wulfhorst, H. A1 - Capitain, C. A1 - Roth, J. A1 - Tippkötter, Nils T1 - Fractioning of lignocellulosic biomass: Scale-down and automation of thermal pretreatment for parameter optimization T2 - Chemie Ingenieur Technik N2 - In order to efficiently convert lignocellulose, it is often necessary to conduct a pretreatment. The biomass considered in this study typically comprises of agricultural and horticultural residues, as well as beechwood. A very environmentally friendly method, namely, fungal pretreatment using white-rot fungi, leads to an enhanced enzymatic hydrolysis. In contrast to other processes presented, the energy input is extremely low. However, the fungal growth on the lignocellulosic substrates takes several weeks at least in order to be effective. Thus, the reduction of chemicals and energy for thermal processing is a target of our current research. Liquid hot water (LHW) and solvent-based pretreatment (OrganoSolv) require more complex equipment, as they depend on high temperatures (160 – 180 °C) and enhanced pressure (up to 20 bar). However, they prove to be promising processes in regard to the fractioning of lignocellulose. For optimal lignin recovery the parameters differ from those established in cellulose extraction. A novel screening system scaled down to a reaction volume of 100 mL has been developed and successfully tested for this purpose. Y1 - 2016 U6 - https://doi.org/10.1002/cite.201650288 SN - 0009-286X SN - 1522-2640 (eISSN) N1 - ProcessNet-Jahrestagung und 32. DECHEMA-Jahrestagung der Biotechnologen 2016, 12. - 15. September 2016, Eurogress Aachen VL - 88 IS - 9 SP - 1229 PB - Wiley-VCH CY - Weinheim ER - TY - CHAP A1 - Rajan, S. A1 - Butenweg, Christoph A1 - Dalguer, L. A. A1 - An, J. H. A1 - Renault, P. A1 - Klinkel, S. T1 - Fragility curves for a three-storey reinforced concrete test structure of the international benchmark SMART 2013 T2 - 16th World Conference on Earthquake, 16WCEE 2017 Santiago Chile, January 9th to 13th 2017 Y1 - 2017 N1 - Paper No 2119 PB - Chilean Association on Seismology and Earthquake Engineering (ACHISINA) ER - TY - JOUR A1 - Lindemann, Markus A1 - Schmid, Beat F. T1 - Framework for specifying, building and operating electronic markets JF - International journal of electronic commerce. Vol. 3 (1998/99), No. 2 Y1 - 1999 SN - 1086-4415 SP - 7 EP - 21 ER - TY - CHAP A1 - Maurer, Florian T1 - Framework to provide a simulative comparison of different energy market designs T2 - Energy Informatics N2 - Useful market simulations are key to the evaluation of diferent market designs existing of multiple market mechanisms or rules. Yet a simulation framework which has a comparison of diferent market mechanisms in mind was not found. The need to create an objective view on different sets of market rules while investigating meaningful agent strategies concludes that such a simulation framework is needed to advance the research on this subject. An overview of diferent existing market simulation models is given which also shows the research gap and the missing capabilities of those systems. Finally, a methodology is outlined how a novel market simulation which can answer the research questions can be developed. Y1 - 2022 U6 - https://doi.org/10.1186/s42162-022-00215-6 SN - 2520-8942 N1 - 11th DACH+ Conference on Energy Informatics, 15-16 September 2022, Freiburg, Germany VL - 5 IS - 2, Article number: 12 SP - 18 EP - 20 PB - Springer Nature ER - TY - JOUR A1 - Digel, Ilya A1 - Demirci, Taylan A1 - Temiz Artmann, Aysegül A1 - Nishikawa, K. T1 - Free Radical Nature of the Bactericidal Effect of Plasma-Generated Cluster Ions (PCIs) JF - Biomedizinische Technik. 49 (2004), H. Erg.-Bd. 2 Y1 - 2004 SN - 0932-4666 SP - 982 EP - 983 ER - TY - CHAP A1 - Bitz, Andreas A1 - Streckert, J.R. A1 - Hansen, V.W. A1 - Lerchl, A. ED - Danesy, Dorothea T1 - Freely moving or restrained animals in bioelec-tromagnetic experiments - pros and cons T2 - AP 2000 : Millennium Conference on Antennas & Propagation, Davos, Switzerland, 9 - 14 April 2000 Y1 - 2000 IS - Band 1 SP - 489 PB - ESA Publications Division, ESTEC CY - Noordwijk ER - TY - JOUR A1 - Werner, Frederik A1 - Wagner, Torsten A1 - Yoshinobu, Tatsuo A1 - Keusgen, Michael A1 - Schöning, Michael Josef T1 - Frequency behaviour of light-addressable potentiometric sensors JF - Physica Status Solidi (A) N2 - Light-addressable potentiometric sensors (LAPS) are semiconductor-based potentiometric sensors, with the advantage to detect the concentration of a chemical species in a liquid solution above the sensor surface in a spatially resolved manner. The addressing is achieved by a modulated and focused light source illuminating the semiconductor and generating a concentration-depending photocurrent. This work introduces a LAPS set-up that is able to monitor the electrical impedance in addition to the photocurrent. The impedance spectra of a LAPS structure, with and without illumination, as well as the frequency behaviour of the LAPS measurement are investigated. The measurements are supported by electrical equivalent circuits to explain the impedance and the LAPS-frequency behaviour. The work investigates the influence of different parameters on the frequency behaviour of the LAPS. Furthermore, the phase shift of the photocurrent, the influence of the surface potential as well as the changes of the sensor impedance will be discussed. Y1 - 2013 U6 - https://doi.org/10.1002/pssa.201200929 SN - 1521-396X ; 0031-8965 VL - 210 IS - 5 SP - 884 EP - 891 PB - Wiley-VCH CY - Weinheim ER - TY - CHAP A1 - Michel, Philipp A1 - Butenweg, Christoph A1 - Klinkel, Sven T1 - Frequency Dependent Impedance Analysis of the Foundation-Soil-Systems of Onshore Wind Turbines T2 - 16th European Conference on Earthquake Engineering, Thessaloniki, 18-21 June, 2018 Y1 - 2018 N1 - Paper No 11440 SP - 1 EP - 13 ER - TY - JOUR A1 - Pourshahidi, Ali Mohammad A1 - Achtsnicht, Stefan A1 - Offenhäusser, Andreas A1 - Krause, Hans-Joachim ED - Offenhäusser, Andreas T1 - Frequency Mixing Magnetic Detection Setup Employing Permanent Ring Magnets as a Static Offset Field Source JF - Sensors N2 - Frequency mixing magnetic detection (FMMD) has been explored for its applications in fields of magnetic biosensing, multiplex detection of magnetic nanoparticles (MNP) and the determination of core size distribution of MNP samples. Such applications rely on the application of a static offset magnetic field, which is generated traditionally with an electromagnet. Such a setup requires a current source, as well as passive or active cooling strategies, which directly sets a limitation based on the portability aspect that is desired for point of care (POC) monitoring applications. In this work, a measurement head is introduced that involves the utilization of two ring-shaped permanent magnets to generate a static offset magnetic field. A steel cylinder in the ring bores homogenizes the field. By variation of the distance between the ring magnets and of the thickness of the steel cylinder, the magnitude of the magnetic field at the sample position can be adjusted. Furthermore, the measurement setup is compared to the electromagnet offset module based on measured signals and temperature behavior. KW - magnetic sensors KW - biosensors KW - frequency mixing magnetic detection KW - magnetic nanoparticles Y1 - 2022 U6 - https://doi.org/10.3390/s22228776 SN - 1424-8220 VL - 22 IS - 22 PB - MDPI CY - Basel ER - TY - CHAP A1 - Helmig, Ilka T1 - Friendship : editorial illustration T2 - Papercraft 2 : design and art with paper KW - Papierkunst KW - Illustration Y1 - 2011 SN - 978-3-89955-333-8 SP - 237 PB - Gestalten Verlag CY - Berlin ER - TY - JOUR A1 - Grande, Marion A1 - Meffert, Elisabeth A1 - Schoenberger, Eva A1 - Jung, Stefanie A1 - Frauenrath, Tobias A1 - Huber, Walter A1 - Hussmann, Katja A1 - Moormann, Mareike A1 - Heim, Stefan T1 - From a concept to a word in a syntactically complete sentence: An fMRI study on spontaneous language production in an overt picture description task JF - NeuroImage N2 - Spontaneous language has rarely been subjected to neuroimaging studies. This study therefore introduces a newly developed method for the analysis of linguistic phenomena observed in continuous language production during fMRI. Most neuroimaging studies investigating language have so far focussed on single word or — to a smaller extent — sentence processing, mostly due to methodological considerations. Natural language production, however, is far more than the mere combination of words to larger units. Therefore, the present study aimed at relating brain activation to linguistic phenomena like word-finding difficulties or syntactic completeness in a continuous language fMRI paradigm. A picture description task with special constraints was used to provoke hesitation phenomena and speech errors. The transcribed speech sample was segmented into events of one second and each event was assigned to one category of a complex schema especially developed for this purpose. The main results were: conceptual planning engages bilateral activation of the precuneus. Successful lexical retrieval is accompanied – particularly in comparison to unsolved word-finding difficulties – by the left middle and superior temporal gyrus. Syntactic completeness is reflected in activation of the left inferior frontal gyrus (IFG) (area 44). In sum, the method has proven to be useful for investigating the neural correlates of lexical and syntactic phenomena in an overt picture description task. This opens up new prospects for the analysis of spontaneous language production during fMRI. Y1 - 2012 U6 - https://doi.org/10.1016/j.neuroimage.2012.03.087 SN - 1522-2586 VL - 61 IS - 3 SP - 702 EP - 714 PB - Elsevier CY - Amsterdam ER -