@misc{PfetschFuegenschuhGeissleretal., author = {Pfetsch, Marc E. and F{\"u}genschuh, Armin and Geißler, Bj{\"o}rn and Geißler, Nina and Gollmer, Ralf and Hiller, Benjamin and Humpola, Jesco and Koch, Thorsten and Lehmann, Thomas and Martin, Alexander and Morsi, Antonio and R{\"o}vekamp, Jessica and Schewe, Lars and Schmidt, Martin and Schultz, R{\"u}diger and Schwarz, Robert and Schweiger, Jonas and Stangl, Claudia and Steinbach, Marc C. and Vigerske, Stefan and Willert, Bernhard M.}, title = {Validation of Nominations in Gas Network Optimization: Models, Methods, and Solutions}, series = {Optimization Methods and Software}, volume = {30}, journal = {Optimization Methods and Software}, number = {1}, issn = {1055-6788}, doi = {10.1080/10556788.2014.888426}, pages = {15 -- 53}, language = {en} } @misc{KorolovLeimkuehlerBoekeetal., author = {Korolov, Ihor and Leimk{\"u}hler, Marc and Boeke, Marc and Donk{\´o}, Zoltan and Schulz-von der Gathen, Volker and Bischoff, Lena and H{\"u}bner, Gerrit and Hartmann, Peter and Gans, Timo and Liu, Yue and Mussenbrock, Thomas and Schulze, Julian}, title = {Helium metastable species generation in atmospheric pressure RF plasma jets driven by tailored voltage waveforms in mixtures of He and N 2}, series = {Journal of Physics D: Applied Physics}, volume = {53}, journal = {Journal of Physics D: Applied Physics}, issn = {1361-6463}, doi = {10.1088/1361-6463/ab6d97}, pages = {18}, language = {en} } @misc{PeschkaThomasGlitzkyetal., author = {Peschka, Dirk and Thomas, Marc and Glitzky, Annegret and N{\"u}rnberg, Reiner and G{\"a}rtner, Klaus and Virgilio, Michele and Guha, Shekhar and Schr{\"o}der, Thomas and Capellini, Giovanni and Koprucki, Thomas}, title = {Modeling of edge-emitting lasers based on tensile strained Germanium microstripes}, series = {IEEE Photonics Journal}, volume = {7}, journal = {IEEE Photonics Journal}, number = {3}, issn = {1943-0655}, doi = {10.1109/JPHOT.2015.2427093}, language = {en} } @misc{JabbarMonchouxThomasetal., author = {Jabbar, Houria and Monchoux, Jean-Philippe and Thomas, Marc and Pyczak, Florian and Couret, Alain}, title = {Improvement of the creep properties of TiAl alloys densified by Spark Plasma Sintering}, series = {Intermetallics}, journal = {Intermetallics}, number = {46}, issn = {0966-9795}, pages = {1 -- 3}, language = {de} } @misc{JabbarMonchouxHoudellieretal., author = {Jabbar, Houria and Monchoux, Jean-Philippe and Houdellier, Florent and Doll{\´e}, Micka{\"e}l and Schimansky, Frank-Peter and Pyczak, Florian and Thomas, Marc and Couret, Alain}, title = {Microstructure and mechanical properties of high niobium containing TiAl alloys elaborated by Spark Plasma Sintering}, series = {Intermetallics}, volume = {18}, journal = {Intermetallics}, number = {12}, issn = {0966-9795}, pages = {2312 -- 2321}, language = {en} } @inproceedings{SzeremleyMussenbrockBrinkmannetal., author = {Szeremley, Daniel and Mussenbrock, Thomas and Brinkmann, Ralf Peter and Zimmermanns, Marc and Rolfes, Ilona and Eremin, Denis}, title = {Comparison of a numerical and analytical model for the simulation of the mode propagation in a microwave driven plasma discharges}, series = {Plasma Sciences (ICOPS), 2015 IEEE International Conference on, May 24-28, 2015, Antalya, Turkey}, booktitle = {Plasma Sciences (ICOPS), 2015 IEEE International Conference on, May 24-28, 2015, Antalya, Turkey}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-4799-6974-6}, doi = {10.1109/PLASMA.2015.7179679}, language = {en} } @inproceedings{LuciusHuetterDietrichetal., author = {Lucius, Andreas and H{\"u}tter, Simon and Dietrich, Philipp and Schneider, Marc and Lehmann, Marius and Geyer, Thomas}, title = {Experimental and Numerical Investigation of Axial Fan Aeroacoustics at Disturbed Inflow Conditions}, series = {Fan 2018, International Conference on Fan Noise, Aerodynamics, Applications and Systems, Darmstadt 2018}, booktitle = {Fan 2018, International Conference on Fan Noise, Aerodynamics, Applications and Systems, Darmstadt 2018}, publisher = {CETIAT}, address = {Villeurbanne, France}, language = {en} } @misc{KirchheimWilskiJaritzetal., author = {Kirchheim, Dennis and Wilski, Stefan and Jaritz, Montgomery and Mitschker, Felix and Oberberg, Moritz and Trieschmann, Jan and Banko, Lars and Brochhagen, Markus and Schreckenberg, Rabea and Hopmann, Christian and Böke, Marc and Benedikt, Jan and Arcos, Teresa de los and Grundmeier, Guido and Grochla, Dario and Ludwig, Alfred and Mussenbrock, Thomas and Brinkmann, Ralf Peter and Awakowicz, Peter and Dahlmann, Rainer}, title = {Improved Homogeneity of Plasma and Coating Properties Using a Lance Matrix Gas Distribution in MW-PECVD}, series = {Journal of Coatings Technology and Research}, volume = {16}, journal = {Journal of Coatings Technology and Research}, number = {2}, issn = {1547-0091}, doi = {10.1007/s11998-018-0138-4}, pages = {573 -- 583}, language = {en} } @misc{GeyerLuciusSchroedteretal., author = {Geyer, Thomas and Lucius, Andreas and Schr{\"o}dter, Marcus and Schneider, Marc and Sarradj, Ennes}, title = {Reduction of Turbulence Interaction Noise Through Airfoils With Perforated Leading Edges}, series = {Acta Acustica united with Acustica}, volume = {105}, journal = {Acta Acustica united with Acustica}, number = {1}, issn = {1610-1928}, doi = {10.3813/AAA.919292}, pages = {109 -- 122}, language = {en} } @misc{LuciusDietrichLehmannetal., author = {Lucius, Andreas and Dietrich, Philipp and Lehmann, Marius and Schneider, Marc and Geyer, Thomas}, title = {Schallquellenlokalisation aus CAA Simulationen von Ventilatorfl{\"u}geln mit Hilfe von Mikrofon-Array Techniken}, series = {Fortschritte der Akustik - DAGA 2019, 45. Jahrestagung f{\"u}r Akustik, 18.-21. M{\"a}rz 2019 in Rostock}, journal = {Fortschritte der Akustik - DAGA 2019, 45. Jahrestagung f{\"u}r Akustik, 18.-21. M{\"a}rz 2019 in Rostock}, abstract = {Die CAA Simulation stellt ein wertvolles Hilfsmittel zum Verst{\"a}ndnis aeroakustischer Ph{\"a}nomene in Ventilatoren dar. Im Rahmen der Simulation werden große Mengen transienter Daten erzeugt, die ausgewertet werden m{\"u}ssen. Neben den Akustikergebnissen an geeigneten Mikrofonpositionen sind die transienten Daten aller Str{\"o}mungsgr{\"o}ßen im Nahfeld verf{\"u}gbar. Frequenzgefilterte Visualisierungen sowohl der Druckfluktuationen auf der Oberfl{\"a}che des Fl{\"u}gels als auch der akustischen Quellterme haben in den untersuchten F{\"a}llen nicht verl{\"a}sslich die relevanten Orte der Schallentstehung gezeigt. Bedingt durch Interferenzen im Nahfeld werden nicht alle Fluktuationen auf der Oberfl{\"a}che als Schall abgestrahlt. Der Einsatz von Mikrofon-Array Techniken zur Schallquellenlokalisation hat sich dagegen als eine sehr gut geeignete Methode herausgestellt. F{\"u}r einen stehenden und einen rotierenden Fl{\"u}gel wurden experimentell vorhandene Arrays in Simulationsmodellen nachgebaut. Die Akustik im Fernfeld wurde {\"u}ber die FW-H Gleichung bestimmt. Es zeigen sich in beiden F{\"a}llen {\"a}hnliche Quellverteilung und Quellst{\"a}rke in Experiment und Simulation. Zus{\"a}tzlich bietet die Simulation den Vorteil, ohne wesentlichen Mehraufwand beliebig viele frei positionierbare Mikrofone nutzen zu k{\"o}nnen. Die Ergebnisse zeigen, dass sich der Nachteil der sehr kurzen physikalischen Zeit einer Simulation durch diesen Freiheitsgrad ausgleichen l{\"a}sst. Die Analyse ist nicht nur im Hinblick auf physikalische Schallquellen hilfreich, sondern kann auch zur Lokalisierung von numerischem St{\"o}rschall genutzt werden.}, language = {de} } @misc{LuciusSchneiderSchweitzerDeBortolietal., author = {Lucius, Andreas and Schneider, Marc and Schweitzer-De Bortoli, Stefan and Gerhard, Tom and Geyer, Thomas}, title = {Aeroacoustic simulation and experimental validation of sound emission of an axial fan applied in a heat pump}, series = {23rd International Congress on Acoustics, Aachen, Germany}, journal = {23rd International Congress on Acoustics, Aachen, Germany}, pages = {1851 -- 1858}, language = {en} } @misc{FuegenschuhGeisslerGollmeretal., author = {F{\"u}genschuh, Armin and Geißler, Bj{\"o}rn and Gollmer, Ralf and Hayn, Christine and Henrion, Ren{\´e} and Hiller, Benjamin and Humpola, Jesco and Koch, Thorsten and Lehmann, Thomas and Martin, Alexander and Mirkov, Radoslava and Morsi, Antonio and R{\"o}vekamp, Jessica and Schewe, Lars and Schmidt, Martin and Schultz, R{\"u}diger and Schwarz, Robert and Schweiger, Jonas and Stangl, Claudia and Steinbach, Marc C. and Willert, Bernhard M.}, title = {Mathematical Optimization for Challenging Network Planning Problems in Un- bundled Liberalized Gas Markets}, series = {Energy Systems}, volume = {5}, journal = {Energy Systems}, number = {3}, issn = {1868-3975}, doi = {10.1007/s12667-013-0099-8}, pages = {449 -- 473}, language = {en} } @misc{FoersterSchenkZollneretal., author = {F{\"o}rster, Stefan and Schenk, Sebastian and Zollner, Eva Maria and Krahn, Oliver and Chiang, Cheng-Tien and Schumann, Florian O. and Bayat, Alireza and Schindler, Karl-Michael and Trautmann, Martin and Hammer, Ren{\´e} and Meinel, Klaus and Adeagbo, Waheed A. and Hergert, Wolfram and Flege, Jan Ingo and Falta, Jens and Ellguth, Martin and Tusche, Christian and DeBoissieu, Marc and Muntwiler, Matthias and Gerber, Thomas and Widdra, Wolf}, title = {Quasicrystals and their Approximants in 2D Ternary Oxides}, series = {Physia Status Solidi B}, volume = {257}, journal = {Physia Status Solidi B}, number = {7}, issn = {0370-1972}, doi = {10.1002/pssb.201900624}, pages = {11}, abstract = {2D oxide quasicrystals (OQCs) are recently discovered aperiodic, but well-ordered oxide interfaces. In this topical review, an introduction to these new thin-film systems is given. The concept of quasicrystals and their approximants is explained for BaTiO3 and SrTiO3 derived OQCs and related periodic structures in these 2D oxides. In situ microscopy unravels the high-temperature formation process of OQCs on Pt(111). The dodecagonal structure is discussed regarding tiling statistics and tiling decoration based on the results of atomically resolved scanning tunneling microscopy and various diffraction techniques. In addition, angle-resolved ultraviolet photoemission spectroscopy and X-ray photoelectron spectroscopy results prove a metallic character of the 2D oxide.}, language = {en} } @misc{DrohanBayuzickDiefenbachetal., author = {Drohan, Patrick J. and Bayuzick, Samuel and Diefenbach, Duane and McDill, Marc and Raab, Thomas and Hirsch, Florian and Bonhage, Alexander}, title = {Northern Appalachian, USA relic charcoal hearths and their unique Ecological Fingerprint}, series = {EGU General Assembly 2021}, journal = {EGU General Assembly 2021}, doi = {10.5194/egusphere-egu21-13618}, language = {en} } @misc{BayuzickDrohanRaabetal., author = {Bayuzick, Samuel and Drohan, Patrick J. and Raab, Thomas and Hirsch, Florian and Bonhage, Alexander and McDill, Marc and Diefenbach, Duane}, title = {Relic charcoal hearths geomorphology and hydrology in mid-Appalachian region of Pennsylvania}, series = {EGU General Assembly 2021}, journal = {EGU General Assembly 2021}, doi = {10.5194/egusphere-egu21-6243}, language = {en} } @misc{LiuKorolovTrieschmannetal., author = {Liu, Yue and Korolov, Ihor and Trieschmann, Jan and Steuer, David and Schulz-von der Gathen, Volker and B{\"o}ke, Marc and Bischoff, Lena and H{\"u}bner, Gerrit and Schulze, Julian and Mussenbrock, Thomas}, title = {Micro Atmospheric Pressure Plasma Jets Excited in He/O2 by Voltage Waveform Tailoring: A Study Based on a Numerical Hybrid Model and Experiments}, series = {Plasma Sources Science and Technology}, volume = {30}, journal = {Plasma Sources Science and Technology}, number = {6}, issn = {1361-6595}, doi = {10.1088/1361-6595/abd0e0}, pages = {1 -- 30}, language = {en} } @misc{EmmeneggerKumarEmmeneggeretal., author = {Emmenegger, Marc and Kumar, Sreedhar Saseendran and Emmenegger, Vishalini and Malinauskas, Tomas and B{\"u}ttner, Thomas and Rose, Laura and Schierack, Peter and Sprinzl, Martin F. and Sommer, Clemens J. and Lackner, Karl J. and Aguzzi, Adriano and Roggenbuck, Dirk and Frauenknecht, Katrin B. M.}, title = {Anti-prothrombin autoantibodies enriched after infection with SARS-CoV-2 and influenced by strength of antibody response against SARS-CoV-2 proteins}, series = {PLoS pathogens}, volume = {17}, journal = {PLoS pathogens}, number = {12}, issn = {1553-7374}, doi = {10.1371/journal.ppat.1010118}, language = {en} } @misc{DrohanBayuzickGuarinetal., author = {Drohan, Patrick J. and Bayuzick, Samuel and Guarin, Daniel and Raab, Thomas and Bonhage, Alexander and Diefenbach, Duane and McDill, Marc}, title = {USA Appalachian relict charcoal hearths have complex landscape and pedologic patterns that are unique from surrounding forest ecosystems}, series = {EGU General Assembly 2022, Vienna, Austria, 23-27 May 2022}, journal = {EGU General Assembly 2022, Vienna, Austria, 23-27 May 2022}, doi = {10.5194/egusphere-egu22-10315}, abstract = {Understanding how present-day abrupt change may alter forest ecosystem services is becoming more important due to ever-growing anthropogenic stresses. Forest managers trying the adapt to anthropogenic stress can benefit from the study and quantification of past abrupt changes in forests, especially when the legacy of past disturbance is still evident. Across the United Kingdom, Europe, and recently the northeastern United States, the examination of historic forest change due to charcoal manufacturing for the firing of iron or lime furnaces is yielding new insights relative to landscape stability, anthropogenic vs natural soil genesis, and forest evolution. A landscape classification process was used in the Central Appalachians (Pennsylvania) to identify 6,758 RCHs near Greenwood Furnace (Greenwood Furnace State Park) and Pine Grove Furnace (Pine Grove Furnace State Park). Topographic wetness index (TWI), and SAGA wetness index (SWI) were created using ~1m LiDAR data for two study areas to quantify surface hydrology effects and were compared to field soil volumetric water content (VWC) measurements. Modeled TWI and SWI values were different for RCH areas when compared to surrounding non-hearth areas indicating that RCHs were acting as a moisture sink. We also found that RCH platforms have different TWI and SWI values than rim areas. Using field measured volumetric water content, we found that as distance from the center of the RCH increases, the drier the soil becomes. Geomorphic position did not affect wetness. Surface soil samples were collected at 51 RCHs in the Greenwood Furnace study area. Laboratory analyses revealed that RCH soils have higher C content than surrounding native soils. Furthermore, while the pH of RCH soils is like native soils, the acidity is greater in RCHs. RCH soils at Greenwood Furnace were found to have lower Mehlich 3 P concentrations and lower K potentially effecting plant growth. RCH soils were found to have higher Ca concentration when compared to native soils. To examine within RCH differences in soil chemistry and morphology more closely, 8 of the 51 RCHs were sampled intensely along a topographic gradient. Control pits were excavated directly upslope from the RCHs. The RCHs were sampled in 5 positions across the hearth from the upslope to down slope position (A upslope rim of the RCH; B halfway point between A and C; C RCH center; D halfway C and E; E downslope rim of the RCH). Soil profiles were described and sampled at each position. The soil samples were analyzed for trace and rare earth element content (Aqua Regia digestion), soil pH (water) and fertility (Mehlich 3 extraction). Results indicated that RCHs are potentially a unique location of refugia for forest flora and perhaps fauna due to the unique geochemistry with higher bases and C and some concentrated metals and a higher soil water content hypothesized to be due to an observed restrictive morphology. Future research should more closely investigate whether RCHs support unique species assemblages and how they may play a role in enhancing today's forest biodiversity.}, language = {en} } @misc{ShokriLuciusSchneideretal., author = {Shokri, Majid and Lucius, Andreas and Schneider, Marc and Geyer, Thomas}, title = {Aeroacoustics of tandem cylinders in crossflow - application to fan guard grills}, series = {Fortschritte der Akustik - DAGA, 48. Jahrestagung f{\"u}r Akustik, 21. - 24. M{\"a}rz 2022}, journal = {Fortschritte der Akustik - DAGA, 48. Jahrestagung f{\"u}r Akustik, 21. - 24. M{\"a}rz 2022}, pages = {110}, language = {de} } @misc{BayuzickGuarinBonhageetal., author = {Bayuzick, Samuel and Guarin, Daniel and Bonhage, Alexander and Hirsch, Florian and Diefenbach, Duane and McDill, Marc and Raab, Thomas and Drohan, Patrick J.}, title = {Small anthropogenic landforms from past charcoal production control moisture dynamics and chemistry in northcentral Appalachian soils}, series = {Geomorphology}, volume = {415}, journal = {Geomorphology}, issn = {1872-695X}, doi = {10.1016/j.geomorph.2022.108379}, pages = {1 -- 11}, abstract = {Throughout the northeastern United States (U.S.) and Europe, relict charcoal hearths (RCHs) are regularly being discovered in proximity to furnaces once used for the extraction of metal from ore or quick-lime production; charcoal produced in hearths was used as a furnace fuel. Given previous research has shown that topographic and subsurface disturbance can be great when a hearth is constructed, we hypothesize that hearth construction alters surface hydrology and soil chemistry in environments in and near hearths. We used a landscape classification process to identify 6758 hearths near furnaces at Greenwood and Pine Grove Furnace State Park, central and southcentral Pennsylvania, U.S. Two types of digital elevation model wetness indexes were used to quantify surface hydrology effects in and around hearths. Modeled wetness conditions were compared to field soil volumetric water content in RCHs near Greenwood Furnace State Park. Modeled wetness indexes indicate that RCH interiors are significantly wetter than RCH rim areas; RCHs are acting as a landscape moisture sink. Results also indicate that RCHs on slopes result in downslope drier conditions below RCHs. Field measured volumetric water content indicates that as distance from the center of the hearth increases, soil moisture significantly decreases. Geomorphic position was found to not be related to RCH wetness. Soil from RCHs, compared to nearby native soils, has significantly higher total C, a lower Mehlich 3 extractable acidity, higher Ca and P. No trend was evident with RCH soil chemistry and geomorphic position. The high frequency of RCH occurrence, in proximity to the furnace's RCHs supported, suggests that RCHs today could locally be an important niche for understory flora and fauna. Further research could explore how RCHs might be affecting surrounding plant populations and how within RCH patterns, especially on hillslopes, might represent a distinctly different scale of physical and chemical variability.}, language = {en} } @misc{LuciusGeyerDietrichetal., author = {Lucius, Andreas and Geyer, Thomas and Dietrich, Philipp and Dietrich, Marc and Ruck, Richard}, title = {Experimentelle und numerische Untersuchungen eines Tragfl{\"u}gelprofils unter gest{\"o}rten Zustr{\"o}mbedingungen}, series = {Fortschritte der Akustik - DAGA, 48. Jahrestagung f{\"u}r Akustik}, journal = {Fortschritte der Akustik - DAGA, 48. Jahrestagung f{\"u}r Akustik}, language = {de} }