@inproceedings{DubberkePriebeVrabecetal.2015, author = {Dubberke, Frithjof H. and Priebe, Klaus-Peter and Vrabec, Jadran and Neef, Matthias and R{\"o}dder, Maximilian}, title = {Thermodynamic simulation and experimental validation of a cascaded two-stage organic Rankine cycle}, series = {ASME ORC 2015, Brussels}, booktitle = {ASME ORC 2015, Brussels}, address = {Brussels}, year = {2015}, language = {en} } @inproceedings{HimmeleinSteffens2022, author = {Himmelein, H. and Steffens, Jochen}, title = {"Ich sehe, was Du h{\"o}rst!" - Verwendung der Pupillometrie zur Messung des Einflusses kognitiver Belastung auf die Ger{\"a}uschbewertung}, series = {Deutsche Jahrestagung f{\"u}r Akustik (DAGA), Stuttgart}, booktitle = {Deutsche Jahrestagung f{\"u}r Akustik (DAGA), Stuttgart}, address = {Stuttgart}, year = {2022}, language = {de} } @inproceedings{ComeronKassianovSchaeferetal.2015, author = {Comeron, Adolfo and Kassianov, Evgueni I. and Sch{\"a}fer, Klaus and Picard, Richard H. and Weber, Konradin}, title = {Remote Sensing of Clouds and the Atmosphere XX. Remote Sensing of Clouds and the Atmosphere, Toulouse), 23.-24.09.2015}, volume = {Proceedings of SPIE ; volume 9640}, publisher = {SPIE}, address = {Bellingham, Washington, USA}, isbn = {978-1-62841-850-7}, issn = {0277-786X}, year = {2015}, language = {en} } @inproceedings{ComeronJackKassianovetal.2016, author = {Comeron, Adolfo and Jack, James and Kassianov, Evgueni I. and Sch{\"a}fer, Kiaus and Picard, Richard H and Weber, Konradin}, title = {Remote Sensing of Clouds and the Atmosphere XXI Introduction}, series = {Remote Sensing of Clouds and the Atmosphere XXI : 28-29 September 2016, Edinburgh, United Kingdom}, booktitle = {Remote Sensing of Clouds and the Atmosphere XXI : 28-29 September 2016, Edinburgh, United Kingdom}, publisher = {SPIE}, address = {Bellingham, Washington, USA}, isbn = {978-1-5106-0406-3}, year = {2016}, language = {en} } @inproceedings{WeberReichardtFischeretal.2012, author = {Weber, Konradin and Reichardt, R. and Fischer, Christian and Moser, H. M. and Eliasson, Jonas}, title = {Computational Visualization of Volcanic Ash Plume Concentrations Measured by light Aircrafts over Germany and Iceland during the Recent Eruptions of the Volcanoes Eyjafjallaj{\"o}kull and Grimsv{\"o}tn}, series = {Recent advances in Fluid Mechanics, Heat \& Mass Transfer, Biology and Ecology}, booktitle = {Recent advances in Fluid Mechanics, Heat \& Mass Transfer, Biology and Ecology}, editor = {Jha, Manoj K. and Lazard, Myriam and Zaharim, Azami and Sopian, Kamaruzzaman}, publisher = {WSEAS}, isbn = {978-1-61804-065-7}, pages = {236 -- 240}, year = {2012}, subject = {Vulkanasche}, language = {en} } @inproceedings{VogelWeberEliassonetal.2012, author = {Vogel, Andreas and Weber, Konradin and Eliasson, Jonas and Palsson, Asgeir and Moser, H. M. and Palsson, Thorgeir and von L{\"o}wis, S. and Fischer, Christian}, title = {Airborne and groundbased measurements of ash particles on Iceland and over Germany during the Gr{\´i}msv{\"o}tn eruption May 2011 [Abstract]}, series = {Geophysical Research Abstracts:EGU General Assembly 2012, held 22-27 April, 2012 in Vienna, Austria}, booktitle = {Geophysical Research Abstracts:EGU General Assembly 2012, held 22-27 April, 2012 in Vienna, Austria}, publisher = {Copernicus}, address = {G{\"o}ttingen}, pages = {12854}, year = {2012}, abstract = {The eruption of the Grimsv{\"o}tn volcano in May 2010 posed with its ash plume a thread to the aviation in northern Europe. Because of ash plume forecasts of the VAAC London the airport of Keflavik in Iceland as well as airports in England, Scotland and Scandinavia were closed for some time, which caused the cancellation or change of about 500 flights in Europe. Even in Germany the airports of Bremen, Hamburg and Berlin were closed for several hours on 25 May 2011. During this eruption period in May 2011, a team of the Duesseldorf University of Applied Sciences, the University of Iceland, the University of Reykjavik and the IMO has performed airborne in-situ measurements over Iceland and Germany as well as ground based measurements in the south of Iceland. The ground based measurements were performed continuously during the whole eruption period at two significant positions (Skogar and Hvollsv{\"o}llur) with optical particle counters (OPCs). The measurement method was based on measuring the airborne concentrations of the classic aerosol components (PM10, PM2.5 and PM1) and TSP (total suspended particles) every 6 seconds. Additional measurement flights on Iceland were started already one day after the beginning of the eruption (twelve in-situ measurement flights) and marked the spatial and temporal spread of volcanic ash in the atmosphere. For the flights light slow flying piston engine powered airplanes where used. The flights over Iceland focused on the western part of Iceland in the region of Reykjavik and Keflavik and over the international airport in Keflavik and were mostly coordinated by ISAVIA. The measurement flights helped to keep Keflavik International Airport open for many additional hours despite of adverse predictions by the London VAAC model, because it was possible to observe the particle concentration on-line during the flights. In Germany a measurement flight was performed on 25 May 2012 over the northern part of Germany where the volcanic ash cloud was forecasted from the dispersion model of the London VAAC. This flight was performed on the behalf of the German Weather Service (DWD). The measurement flights revealed most time relative low airborne ash concentrations over western Iceland, although the groundbased measured ash concentrations in the south of Iceland nearer to the Grimsv{\"o}tn were very high. In Germany the measured concentrations during the flight were low enough to be consistent with the re-opening of the airports Bremen, Hamburg and Berlin, which were closed by the authorities for several hours on 25 May 2011 because of high concentration predictions by the VAAC-model. The measurement flights clearly proved that OPCs, based on slow flying piston-motor driven aircrafts, are very suitable for the determination of airborne ash particles during volcanic eruptions. This is an important issue for air traffic safety.}, language = {en} } @inproceedings{NehrBausCınar2025, author = {Nehr, Sascha and Baus, Lukas and {\c{C}}{\i}nar, H.}, title = {L{\"u}ftung in Bildungseinrichtungen, 29. Oktober 2025, K{\"o}ln}, series = {2. K{\"o}lner Innenraum-Forum}, booktitle = {2. K{\"o}lner Innenraum-Forum}, publisher = {HYGIUM - Zentrum f{\"u}r Hygiene und Umweltmedizin GmbH}, year = {2025}, language = {de} } @inproceedings{JahrSimBatosetal.2014, author = {Jahr, Andreas and Sim, H. and Batos, Andrej and Molla, G. and Berk, V. and Villena Mart{\´i}nez, J. D.}, title = {A novel method to examine the abrasive and impact stress behavior of agricultural blades}, series = {VII Congreso Ib{\´e}rico de Agroingenier{\´i}a y Ciencias Hort{\´i}colas: innovar y producir para el futuro. Libro de actas}, booktitle = {VII Congreso Ib{\´e}rico de Agroingenier{\´i}a y Ciencias Hort{\´i}colas: innovar y producir para el futuro. Libro de actas}, isbn = {978-84-695-9055-3}, pages = {854 -- 859}, year = {2014}, abstract = {Cutting of stalk material is a core process within the whole harvesting period. During the entire harvesting, every stalk is cut at least one time. For other agricultural processes, such as grain crop harvesting or mulching of brownfields, cutting processes belong also to the main techniques. They have a significant influence on the efficiency and profitability of agricultural machines. Minimizing wear has a high level of importance regarding an environmental friendly and resource efficient agriculture. Wear during agricultural cutting processes is mainly caused due to abrasion and impact stress. Blunt and deformed blades affect the energy efficiency and the cutting quality. The increase of fuel consumption and frequent machine breakdowns with an involvement of high labor and material costs generate considerable economic losses. A consequent, methodical optimization of the wear behavior of the blades can offer a high saving potential of ecological and economic resources. The blade geometry, base material and heat respectively surface treatment substantially determine the wear resistance. Under technological and economic considerations these parameters have to be optimized. Therefore, a test method has been developed at the FMDauto in cooperation with the Ennepetaler Schneid- und M{\"a}htechnik (ESM) GmbH \& Co KG. The test bench enables to test different blades of agricultural machines under standardized and repeatable conditions. This paper presents the test bench and the results of several wear tests. The examinations of the abrasive wear and the impact stress on cutter blades are shown. Algorithms developed at FMDauto are used to analyze the results. It is carried out that further developments of the analyzing methods to describe the sharpness and disruptions of cutter blades are reasonable.}, language = {en} }