@article{LettiniHavermannGuidettietal.2010, author = {Lettini, Antonio and Havermann, Marc and Guidetti, Marco and Fornaciari, Andrea}, title = {Improved functionalities and energy saving potential on mobile machines combining electronics with flow sharing valve and variable displacement pump}, series = {IFK 7, 7th International Fluid Power Conference, Efficiency through Fluid Power, 7. Internationales Fluidtechnisches Kolloquium, Workshop Proceedings, Vol. 3, Aachen, DE, 22.-24. Mar, 2010}, journal = {IFK 7, 7th International Fluid Power Conference, Efficiency through Fluid Power, 7. Internationales Fluidtechnisches Kolloquium, Workshop Proceedings, Vol. 3, Aachen, DE, 22.-24. Mar, 2010}, publisher = {-}, isbn = {978-3-940565-92-1}, pages = {103 -- 114}, year = {2010}, language = {en} } @article{GoettenHavermannBraunetal.2020, author = {G{\"o}tten, Falk and Havermann, Marc and Braun, Carsten and Marino, Matthew and Bil, Cees}, title = {Improved Form Factor for Drag Estimation of Fuselages with Various Cross Sections}, series = {Journal of Aircraft}, journal = {Journal of Aircraft}, publisher = {AIAA}, address = {Reston, Va.}, issn = {1533-3868}, doi = {10.2514/1.C036032}, pages = {1 -- 13}, year = {2020}, abstract = {The paper presents an aerodynamic investigation of 70 different streamlined bodies with fineness ratios ranging from 2 to 10. The bodies are chosen to idealize both unmanned and small manned aircraft fuselages and feature cross-sectional shapes that vary from circular to quadratic. The study focuses on friction and pressure drag in dependency of the individual body's fineness ratio and cross section. The drag forces are normalized with the respective body's wetted area to comply with an empirical drag estimation procedure. Although the friction drag coefficient then stays rather constant for all bodies, their pressure drag coefficients decrease with an increase in fineness ratio. Referring the pressure drag coefficient to the bodies' cross-sectional areas shows a distinct pressure drag minimum at a fineness ratio of about three. The pressure drag of bodies with a quadratic cross section is generally higher than for bodies of revolution. The results are used to derive an improved form factor that can be employed in a classic empirical drag estimation method. The improved formulation takes both the fineness ratio and cross-sectional shape into account. It shows superior accuracy in estimating streamlined body drag when compared with experimental data and other form factor formulations of the literature.}, language = {en} } @article{SchaeferBoegeShanjiaetal.1994, author = {Sch{\"a}fer, Horst and Boege, P. and Shanjia, Xu and Xinzhang, Wu (u.a.)}, title = {Improved conductivity-measurement of semiconductor epitaxial layers by means of the contactless microwave method}, series = {Conference digest : 10 - 14 January 1994, San Diego, California / International Conference on Millimeter and Submillimeter Waves and Applications / Mohammed N. Afsar, chair/ed.}, journal = {Conference digest : 10 - 14 January 1994, San Diego, California / International Conference on Millimeter and Submillimeter Waves and Applications / Mohammed N. Afsar, chair/ed.}, publisher = {SPIE}, address = {Bellingham, Wash.}, isbn = {0-8194-1558-8}, pages = {649 -- 658}, year = {1994}, language = {en} } @article{KotterRiekert1983, author = {Kotter, Michael and Riekert, L.}, title = {Impregnation-type catalysts with nonuniform distribution of the active component}, series = {Chemical engineering fundamentals. 2 (1983)}, journal = {Chemical engineering fundamentals. 2 (1983)}, isbn = {0723-0966}, pages = {19 -- 38}, year = {1983}, language = {en} } @article{MakovickaGaertnerHardtetal.1997, author = {Makovicka, C. and G{\"a}rtner, G. and Hardt, Arno and Hermann, W. and Wiechert, D. U.}, title = {Impregnated cathode surface investigations by SFM/STM and SEM/EDX}, series = {Applied surface science. Vol. 111}, journal = {Applied surface science. Vol. 111}, issn = {1873-5584 (E-Journal); 0169-4332 (Print)}, pages = {70 -- 75}, year = {1997}, language = {en} } @article{BreussKleefeld2020, author = {Breuß, Michael and Kleefeld, Andreas}, title = {Implicit monotone difference methods for scalar conservation laws with source terms}, series = {Acta Mathematica Vietnamica}, volume = {45}, journal = {Acta Mathematica Vietnamica}, publisher = {Springer Singapore}, address = {Singapore}, issn = {2315-4144}, doi = {10.1007/s40306-019-00354-1}, pages = {709 -- 738}, year = {2020}, abstract = {In this article, a concept of implicit methods for scalar conservation laws in one or more spatial dimensions allowing also for source terms of various types is presented. This material is a significant extension of previous work of the first author (Breuß SIAM J. Numer. Anal. 43(3), 970-986 2005). Implicit notions are developed that are centered around a monotonicity criterion. We demonstrate a connection between a numerical scheme and a discrete entropy inequality, which is based on a classical approach by Crandall and Majda. Additionally, three implicit methods are investigated using the developed notions. Next, we conduct a convergence proof which is not based on a classical compactness argument. Finally, the theoretical results are confirmed by various numerical tests.}, language = {en} } @article{WissenBogdanskiScheeretal.2005, author = {Wissen, M. and Bogdanski, N. and Scheer, H.-C. and Bitz, Andreas and Ahrens, G. and Gruetzner, G.}, title = {Implication of the light polarisation for UV curing of pre-patterned resists}, series = {Microelectronic Engineering}, volume = {78-79}, journal = {Microelectronic Engineering}, issn = {0167-9317}, doi = {10.1016/j.mee.2004.12.099}, pages = {659 -- 664}, year = {2005}, language = {en} } @article{MottaghyDijkshoorn2012, author = {Mottaghy, Darius and Dijkshoorn, Lydia}, title = {Implementing an effective finite difference formulation for borehole heat exchangers into a heat and mass transport code}, series = {Renewable Energy}, volume = {45}, journal = {Renewable Energy}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0960-1481}, doi = {10.1016/j.renene.2012.02.013}, pages = {59 -- 71}, year = {2012}, abstract = {We present an effective finite difference formulation for implementing and modeling multiple borehole heat exchangers (BHE) in the general 3-D coupled heat and flow transport code SHEMAT. The BHE with arbitrary length can be either coaxial or double U-shaped. It is particularly suitable for modeling deep BHEs which contain varying pipe diameters and materials. Usually, in numerical simulations, a fine discretization of the BHE assemblage is required, due to the large geometric aspect ratios involved. This yields large models and long simulation times. The approach avoids this problem by considering heat transport between fluid and the soil through pipes and grout via thermal resistances. Therefore, the simulation time can be significantly reduced. The coupling with SHEMAT is realized by introducing an effective heat generation. Due to this connection, it is possible to consider heterogeneous geological models, as well as the influence of groundwater flow. This is particularly interesting when studying the long term behavior of a single BHE or a BHE field. Heating and cooling loads can enter the model with an arbitrary interval, e.g. from hourly to monthly values. When dealing with large BHE fields, computing times can be further significantly reduced by focusing on the temperature field around the BHEs, without explicitly modeling inlet and outlet temperatures. This allows to determine the possible migration of cold and warm plumes due to groundwater flow, which is of particular importance in urban areas with a high BHE installation density. The model is validated against the existing BHE modeling codes EWS and EED. A comparison with monitoring data from a deep BHE in Switzerland shows a good agreement. Synthetic examples demonstrate the field of application of this model.}, language = {en} } @article{Fassbender1995, author = {Faßbender, Heinz}, title = {Implementation of a UU-Algorithm for primitive recursive tree functions}, series = {Fundamentals of computation theory : proceedings / 10th International Conference, FCT '95, Dresden, Germany, August 22 - 25, 1995. Horst Reichel (ed.)}, journal = {Fundamentals of computation theory : proceedings / 10th International Conference, FCT '95, Dresden, Germany, August 22 - 25, 1995. Horst Reichel (ed.)}, publisher = {Springer}, address = {Berlin [u.a.]}, isbn = {3-540-60249-6}, pages = {233 -- 242}, year = {1995}, language = {en} } @article{Fassbender1993, author = {Faßbender, Heinz}, title = {Implementation of a universal unification algorithm for macro tree transducers}, series = {Fundamentals of computation theory : proceedings / 9th International Conference, FCT '93, Szeged, Hungary, August 23 - 27, 1993. Zolt{\´a}n {\´E}sik (ed.)}, journal = {Fundamentals of computation theory : proceedings / 9th International Conference, FCT '93, Szeged, Hungary, August 23 - 27, 1993. Zolt{\´a}n {\´E}sik (ed.)}, publisher = {Springer}, address = {Berlin [u.a.]}, isbn = {3-540-57163-9}, pages = {222 -- 233}, year = {1993}, language = {en} } @article{FassbenderMoessleVogler1996, author = {Faßbender, Heinz and M{\"o}ßle, Andrea and Vogler, Heiko}, title = {Implementation of a deterministic partial e-unification algorithm for macro tree transducers}, series = {Journal of functional and logic programming. 1996 (1996), H. 2}, journal = {Journal of functional and logic programming. 1996 (1996), H. 2}, isbn = {1080-5230}, year = {1996}, language = {en} } @article{DelleHuckBaeckeretal.2015, author = {Delle, Lotta E. and Huck, Christina and B{\"a}cker, Matthias and M{\"u}ller, Frank and Grandthyll, Samuel and Jacobs, Karin and Lilischkis, Rainer and Vu, Xuan T. and Sch{\"o}ning, Michael Josef and Wagner, Patrick and Thoelen, Roland and Weil, Maryam and Ingebrandt, Sven}, title = {Impedimetric immunosensor for the detection of histamine based on reduced graphene oxide}, series = {Physica status solidi (a)}, volume = {212}, journal = {Physica status solidi (a)}, number = {6}, publisher = {Wiley}, address = {Weinheim}, issn = {1862-6319}, doi = {10.1002/pssa.201431863}, pages = {1327 -- 1334}, year = {2015}, language = {en} } @article{RiedelKartchemnikSchoeningetal.2014, author = {Riedel, Marc and Kartchemnik, Julia and Sch{\"o}ning, Michael Josef and Lisdat, Fred}, title = {Impedimetric DNA detection - steps forward to sensorial application}, series = {Analytical chemistry}, volume = {86 (2014)}, journal = {Analytical chemistry}, number = {15}, publisher = {ACS Publications}, address = {Columbus}, issn = {1520-6882 (E-Journal); 0003-2700 (Print); 0096-4484 (Print)}, doi = {10.1021/ac501800q}, pages = {7867 -- 7874}, year = {2014}, abstract = {This study describes a label-free impedimetric sensor based on short ssDNA recognition elements for the detection of hybridization events. We concentrate on the elucidation of the influence of target length and recognition sequence position on the sensorial performance. The impedimetric measurements are performed in the presence of the redox system ferri-/ferrocyanide and show an increase in charge transfer resistance upon hybridization of ssDNA to the sensor surface. Investigations on the impedimetric signal stability demonstrate a clear influence of the buffers used during the sensor preparation and the choice of the passivating mercaptoalcanol compound. A stable sensor system has been developed, enabling a reproducible detection of 25mer target DNA in the low nanomolar range. After hybridization, a sensor regeneration can be reached with deionized water by adjustment of effective convection conditions, ensuring a sensor reusability. By investigations of longer targets with overhangs exposed to the solution, we can demonstrate applicability of the impedimetric detection for longer ssDNA. However, a decreasing charge transfer resistance change (ΔRct) is found by extending the overhang. As a strategy to increase the impedance change for longer target strands, the position of the recognition sequence can be designed in a way that a small overhang is exposed to the electrode surface. This is found to result in an increase in the relative Rct change. These results suggest that DNA and consequently negative charge near the electrode possess a larger impact on the impedimetric signal than DNA further away.}, language = {en} } @article{SchusserLeinhosBaeckeretal.2013, author = {Schusser, Sebastian and Leinhos, Marcel and B{\"a}cker, Matthias and Poghossian, Arshak and Wagner, Patrick and Sch{\"o}ning, Michael Josef}, title = {Impedance spectroscopy: A tool for real-time in situ monitoring of the degradation of biopolymers}, series = {Physica Status Solidi (A)}, volume = {210}, journal = {Physica Status Solidi (A)}, number = {5}, publisher = {Wiley}, address = {Weinheim}, issn = {1521-396X ; 0031-8965}, doi = {10.1002/pssa.201200941}, pages = {905 -- 910}, year = {2013}, abstract = {Investigation of the degradation kinetics of biodegradable polymers is essential for the development of implantable biomedical devices with predicted biodegradability. In this work, an impedimetric sensor has been applied for real-time and in situ monitoring of degradation processes of biopolymers. The sensor consists of two platinum thin-film electrodes covered by a polymer film to be studied. The benchmark biomedical polymer poly(D,L-lactic acid) (PDLLA) was used as a model system. PDLLA films were deposited on the sensor structure from a polymer solution by using the spin-coating method. The degradation kinetics of PDLLA films have been studied in alkaline solutions of pH 9 and 12 by means of an impedance spectroscopy (IS) method. Any changes in a polymer capacitance/resistance induced by water uptake and/or polymer degradation will modulate the global impedance of the polymer-covered sensor that can be used as an indicator of the polymer degradation. The degradation rate can be evaluated from the time-dependent impedance spectra. As expected, a faster degradation has been observed for PDLLA films exposed to pH 12 solution.}, language = {en} } @article{PoghossianMaiMourzinaetal.2004, author = {Poghossian, Arshak and Mai, D.-T. and Mourzina, Y. and Sch{\"o}ning, Michael Josef}, title = {Impedance effect of an ion-sensitive membrane: characterisation of an EMIS sensor by impedance spectroscopy, capacitance-voltage and constant-capacitance method}, series = {Sensors and Actuators B. 103 (2004), H. 1-2}, journal = {Sensors and Actuators B. 103 (2004), H. 1-2}, isbn = {0925-4005}, pages = {423 -- 428}, year = {2004}, language = {en} } @article{WeberHekmatZimmermannetal.2004, author = {Weber, Hans-Joachim and Hekmat, K. and Zimmermann, T. and Kampe, S.}, title = {Impact of tranexamic acid vs. aprotinin on blood loss and transfusion requirements after cardiopulmonary bypass: a prospective, randomised, double-blind trial / Hekmat, K. ; Zimmermann, T. ; Kampe, S. ; Kasper, S. M. ; Weber, H. J. ; Geissler, H. J. ; Meh}, series = {Current Medical Research and Opinion. 20 (2004), H. 1}, journal = {Current Medical Research and Opinion. 20 (2004), H. 1}, isbn = {0300-7995}, pages = {121 -- 126}, year = {2004}, language = {en} } @article{BoehnertBlaschkeBiewendt2023, author = {B{\"o}hnert, Arno and Blaschke, Florian and Biewendt, Marcel}, title = {Impact of sustainability on the strategic direction of luxury companies}, series = {European Journal of Marketing and Economics}, volume = {6}, journal = {European Journal of Marketing and Economics}, number = {1}, publisher = {Revistia}, address = {London}, issn = {2601-8659}, pages = {70 -- 85}, year = {2023}, abstract = {Today's society is undergoing a paradigm shift driven by the megatrend of sustainability. This undeniably affects all areas of Western life. This paper aims to find out how the luxury industry is dealing with this change and what adjustments are made by the companies. For this purpose, interviews were conducted with managers from the luxury industry, in which they were asked about specific measures taken by their companies as well as trends in the industry. In a subsequent evaluation, the trends in the luxury industry were summarized for the areas of ecological, social, and economic sustainability. It was found that the area of environmental sustainability is significantly more focused than the other sub-areas. Furthermore, the need for a customer survey to validate the industry-based measures was identified.}, language = {en} } @article{DachwaldMcDonaldMcInnesetal.2007, author = {Dachwald, Bernd and McDonald, Malcolm and McInnes, Colin R. and Mengali, Giovanni}, title = {Impact of Optical Degradation on Solar Sail Mission Performance}, series = {Journal of Spacecraft and Rockets. 44 (2007), H. 4}, journal = {Journal of Spacecraft and Rockets. 44 (2007), H. 4}, isbn = {0022-4650}, pages = {740 -- 749}, year = {2007}, language = {en} } @article{FingerBraunBil2018, author = {Finger, Felix and Braun, Carsten and Bil, Cees}, title = {Impact of electric propulsion technology and mission requirements on the performance of VTOL UAVs}, series = {CEAS Aeronautical Journal}, volume = {10}, journal = {CEAS Aeronautical Journal}, number = {3}, publisher = {Springer}, issn = {1869-5582 print}, doi = {10.1007/s13272-018-0352-x}, pages = {843}, year = {2018}, abstract = {One of the engineering challenges in aviation is the design of transitioning vertical take-off and landing (VTOL) aircraft. Thrust-borne flight implies a higher mass fraction of the propulsion system, as well as much increased energy consumption in the take-off and landing phases. This mass increase is typically higher for aircraft with a separate lift propulsion system than for aircraft that use the cruise propulsion system to support a dedicated lift system. However, for a cost-benefit trade study, it is necessary to quantify the impact the VTOL requirement and propulsion configuration has on aircraft mass and size. For this reason, sizing studies are conducted. This paper explores the impact of considering a supplemental electric propulsion system for achieving hovering flight. Key variables in this study, apart from the lift system configuration, are the rotor disk loading and hover flight time, as well as the electrical systems technology level for both batteries and motors. Payload and endurance are typically used as the measures of merit for unmanned aircraft that carry electro-optical sensors, and therefore the analysis focuses on these particular parameters.}, language = {en} } @article{FingerBraunBil2020, author = {Finger, Felix and Braun, Carsten and Bil, Cees}, title = {Impact of Battery Performance on the Initial Sizing of Hybrid-Electric General Aviation Aircraft}, series = {Journal of Aerospace Engineering}, volume = {33}, journal = {Journal of Aerospace Engineering}, number = {3}, publisher = {ASCE}, address = {Reston, Va.}, issn = {1943-5525}, doi = {10.1061/(ASCE)AS.1943-5525.0001113}, year = {2020}, abstract = {Studies suggest that hybrid-electric aircraft have the potential to generate fewer emissions and be inherently quieter when compared to conventional aircraft. By operating combustion engines together with an electric propulsion system, synergistic benefits can be obtained. However, the performance of hybrid-electric aircraft is still constrained by a battery's energy density and discharge rate. In this paper, the influence of battery performance on the gross mass for a four-seat general aviation aircraft with a hybrid-electric propulsion system is analyzed. For this design study, a high-level approach is chosen, using an innovative initial sizing methodology to determine the minimum required aircraft mass for a specific set of requirements and constraints. Only the peak-load shaving operational strategy is analyzed. Both parallel- and serial-hybrid propulsion configurations are considered for two different missions. The specific energy of the battery pack is varied from 200 to 1,000 W⋅h/kg, while the discharge time, and thus the normalized discharge rating (C-rating), is varied between 30 min (2C discharge rate) and 2 min (30C discharge rate). With the peak-load shaving operating strategy, it is desirable for hybrid-electric aircraft to use a light, low capacity battery system to boost performance. For this case, the battery's specific power rating proved to be of much higher importance than for full electric designs, which have high capacity batteries. Discharge ratings of 20C allow a significant take-off mass reduction aircraft. The design point moves to higher wing loadings and higher levels of hybridization if batteries with advanced technology are used.}, language = {en} } @article{BogoyavlenskiyBerezinOgnevaetal.1999, author = {Bogoyavlenskiy, A. P. and Berezin, V. E. and Ogneva, A. V. and Tolmacheva, V. P. and Digel, Ilya and Khudyakova, S. S.}, title = {Immunostimulating activity of a saponin-containing extract of Saponaria officinalis}, series = {Voprosy virusologii}, volume = {44}, journal = {Voprosy virusologii}, number = {5}, issn = {0507-4088}, pages = {229 -- 232}, year = {1999}, language = {en} } @article{MourzinaYoshinobuErmolenkoetal.2004, author = {Mourzina, Ioulia G. and Yoshinobu, Tatsuo and Ermolenko, Yuri E. and Vlasov, Yuri G. and Sch{\"o}ning, Michael Josef and Iwasaki, H.}, title = {Immobilization of urease and cholinesterase on the surface of semiconductor transducer for the development of lightaddressable potentiometric sensors}, series = {Microchimica Acta. 144 (2004), H. 1-3}, journal = {Microchimica Acta. 144 (2004), H. 1-3}, isbn = {0026-3672}, pages = {41 -- 50}, year = {2004}, language = {en} } @article{MourzinaYoshinobuErmolenkoetal.2004, author = {Mourzina, I.G. and Yoshinobu, T. and Ermolenko, Y.E. and Vlasov, Y. G. and Sch{\"o}ning, Michael Josef and Iwasaki, H.}, title = {Immobilization of urease and cholinesterase on the surface of semiconductor transducer for the development of light-addressable potentiometric sensors}, series = {Technical digest of the 10th International Meeting on Chemical Sensors, July 11 - 14, 2004, Tsukuba, Japan / Japan Association of Chemical Sensors}, journal = {Technical digest of the 10th International Meeting on Chemical Sensors, July 11 - 14, 2004, Tsukuba, Japan / Japan Association of Chemical Sensors}, publisher = {Japan Association of Chemical Sensors}, address = {Fukuoka}, pages = {788 -- 789}, year = {2004}, language = {en} } @article{BiselliLuellauDreisbachetal.1992, author = {Biselli, Manfred and L{\"u}llau, E. and Dreisbach, C. and Grogg, A.}, title = {Immobilization of animal cells on chemically modified siran carrier / L{\"u}llau, E. ; Dreisbach, C. ; Grogg, A. ; Biselli, M. ; Wandrey, C.}, series = {Animal cell technology : developments, processes, and products ; ESACT, European Society for Animal Cell Technology, the 11th meeting / Ed. R. E. Spier}, journal = {Animal cell technology : developments, processes, and products ; ESACT, European Society for Animal Cell Technology, the 11th meeting / Ed. R. E. Spier}, publisher = {Butterworth-Heinemann}, address = {Oxford}, isbn = {0750604212}, pages = {469 -- 475}, year = {1992}, language = {en} } @article{FoersterSchmidtHaug1996, author = {F{\"o}rster, Arnold and Schmidt, T. and Haug, R. J.}, title = {Imaging the local density of states in a disordered semiconductor / T. Schmidt ; R. J. Haug ; V. I. Fal'ko ... A. F{\"o}rster ...}, series = {23rd International Conference on the Physics of Semiconductors : Berlin, Germany, July 21 - 26, 1996 / ed.: Matthias Scheffler ... - Vol. 3}, journal = {23rd International Conference on the Physics of Semiconductors : Berlin, Germany, July 21 - 26, 1996 / ed.: Matthias Scheffler ... - Vol. 3}, publisher = {World Scientific}, address = {Singapore [u.a.]}, isbn = {981-02-2947-X}, pages = {2251 -- ff.}, year = {1996}, language = {en} } @article{HillenRuppSchiebeletal.1989, author = {Hillen, Walter and Rupp, S. and Schiebel, U. and Zaengel, Thomas T.}, title = {Imaging performance of a selenium-based detector for high-resolution radiography}, series = {Medical Imaging III: Image Formation}, journal = {Medical Imaging III: Image Formation}, isbn = {0-8194-0125-0}, pages = {296}, year = {1989}, language = {en} } @article{HillenSchiebelZaengel1987, author = {Hillen, Walter and Schiebel, U. and Zaengel, T.}, title = {Imaging performance of a digital storage phosphor system}, series = {Medical Physics. 14 (1987), H. 5}, journal = {Medical Physics. 14 (1987), H. 5}, isbn = {0094-2405}, pages = {744 -- 751}, year = {1987}, language = {en} } @article{Kurz2019, author = {Kurz, Melanie}, title = {Images of Sweden in Germany: from Sundborn and Bullerby to Ikea}, series = {nomad: the magazine for new design culture, business affairs and contemporary lifestyle}, journal = {nomad: the magazine for new design culture, business affairs and contemporary lifestyle}, number = {8}, isbn = {2513-0714}, pages = {136 -- 147}, year = {2019}, language = {en} } @article{PhilippEfthimiouPaganoetal.2022, author = {Philipp, Mohr and Efthimiou, Nikos and Pagano, Fiammetta and Kratochwil, Nicolaus and Pizzichemi, Marco and Tsoumpas, Charalampos and Auffray, Etiennette and Ziemons, Karl}, title = {Image reconstruction analysis for positron emission tomography with heterostructured scintillators}, series = {IEEE Transactions on Radiation and Plasma Medical Sciences}, volume = {7}, journal = {IEEE Transactions on Radiation and Plasma Medical Sciences}, number = {1}, publisher = {IEEE}, address = {New York, NY}, issn = {2469-7311}, doi = {10.1109/TRPMS.2022.3208615}, pages = {41 -- 51}, year = {2022}, abstract = {The concept of structure engineering has been proposed for exploring the next generation of radiation detectors with improved performance. A TOF-PET geometry with heterostructured scintillators with a pixel size of 3.0×3.1×15 mm3 was simulated using Monte Carlo. The heterostructures consisted of alternating layers of BGO as a dense material with high stopping power and plastic (EJ232) as a fast light emitter. The detector time resolution was calculated as a function of the deposited and shared energy in both materials on an event-by-event basis. While sensitivity was reduced to 32\% for 100 μm thick plastic layers and 52\% for 50 μm, the CTR distribution improved to 204±49 ps and 220±41 ps respectively, compared to 276 ps that we considered for bulk BGO. The complex distribution of timing resolutions was accounted for in the reconstruction. We divided the events into three groups based on their CTR and modeled them with different Gaussian TOF kernels. On a NEMA IQ phantom, the heterostructures had better contrast recovery in early iterations. On the other hand, BGO achieved a better contrast to noise ratio (CNR) after the 15th iteration due to the higher sensitivity. The developed simulation and reconstruction methods constitute new tools for evaluating different detector designs with complex time responses.}, language = {en} } @article{HillenSchiebelZaengel1986, author = {Hillen, Walter and Schiebel, U. and Zaengel, T.}, title = {Image quality in selenium-based digital radiography. Schiebel, U.; Hillen, W.; Zaengel, T.}, series = {Medical Imaging}, journal = {Medical Imaging}, pages = {176}, year = {1986}, language = {en} } @article{VosLagemaatBarentszetal.2014, author = {Vos, E. K. and Lagemaat, M. W. and Barentsz, J. O. and F{\"u}tterer, J. J. and Zamecnik, P. and Roozen, H. and Orzada, S. and Bitz, Andreas and Maas, M. C. and Scheenen, T. W. J.}, title = {Image quality and cancer visibility of T2-weighted Magnetic Resonance Imaging of the prostate at 7 Tesla}, series = {European Radiology}, volume = {24}, journal = {European Radiology}, number = {8}, publisher = {Springer}, address = {Cham}, issn = {1432-1084}, doi = {10.1007/s00330-014-3234-6}, pages = {1950 -- 1958}, year = {2014}, abstract = {Objectives To assess the image quality of T2-weighted (T2w) magnetic resonance imaging of the prostate and the visibility of prostate cancer at 7 Tesla (T). Materials \& methods Seventeen prostate cancer patients underwent T2w imaging at 7T with only an external transmit/receive array coil. Three radiologists independently scored images for image quality, visibility of anatomical structures, and presence of artefacts. Krippendorff's alpha and weighted kappa statistics were used to assess inter-observer agreement. Visibility of prostate cancer lesions was assessed by directly linking the T2w images to the confirmed location of prostate cancer on histopathology. Results T2w imaging at 7T was achievable with 'satisfactory' (3/5) to 'good' (4/5) quality. Visibility of anatomical structures was predominantly scored as 'satisfactory' (3/5) and 'good' (4/5). If artefacts were present, they were mostly motion artefacts and, to a lesser extent, aliasing artefacts and noise. Krippendorff's analysis revealed an α = 0.44 between three readers for the overall image quality scores. Clinically significant cancer lesions in both peripheral zone and transition zone were visible at 7T. Conclusion T2w imaging with satisfactory to good quality can be routinely acquired, and cancer lesions were visible in patients with prostate cancer at 7T using only an external transmit/receive body array coil.}, language = {en} } @article{KallweitHelbingOrglmeisteretal.1994, author = {Kallweit, Stephan and Helbing, M. and Orglmeister, R. and Siekmann, H. E.}, title = {Image Processing Techniques with Neural Networks for Flow Visualization in Rotating Machinery / Helbing, M. ; Orgimeiste, R. [Orglmeister, R.] ; Kallweit, S. ; Siekmann, H. E. ; Dues, M. ; Cronemeyer, J.}, series = {FLUCOME '94 : the 4th Triennial International Symposium on Fluid Control, Measurement and Visualization; August 29 - September 1, 1994, Toulouse, France, International Congress Centre, DIGORA-Lab{\`e}ge / CERT/ONERA. General chairman Patrick Hebrard}, journal = {FLUCOME '94 : the 4th Triennial International Symposium on Fluid Control, Measurement and Visualization; August 29 - September 1, 1994, Toulouse, France, International Congress Centre, DIGORA-Lab{\`e}ge / CERT/ONERA. General chairman Patrick Hebrard}, address = {Toulouse}, pages = {87 -- 94}, year = {1994}, language = {en} } @article{MiyamotoSugawaraKanohetal.2010, author = {Miyamoto, Ko-ichiro and Sugawara, Yuri and Kanoh, Shin´ichiro and Yoshinobu, Tatsuo and Wagner, Torsten and Sch{\"o}ning, Michael Josef}, title = {Image correction method for the chemical imaging sensor}, series = {Sensors and Actuators B: Chemical. 144 (2010), H. 2}, journal = {Sensors and Actuators B: Chemical. 144 (2010), H. 2}, pages = {344 -- 348}, year = {2010}, language = {en} } @article{Grap2007, author = {Grap, Rolf Dietmar}, title = {If you think, education is expensive, try incompetence}, series = {Beschaffung aktuell (2007)}, journal = {Beschaffung aktuell (2007)}, isbn = {0341-4507}, pages = {62 -- 63}, year = {2007}, language = {en} } @article{BialonskiLehnertz2006, author = {Bialonski, Stephan and Lehnertz, Klaus}, title = {Identifying phase synchronization clusters in spatially extended dynamical systems}, series = {Physical Review E}, volume = {74}, journal = {Physical Review E}, number = {5}, issn = {2470-0053}, doi = {10.1103/PhysRevE.74.051909}, pages = {051909}, year = {2006}, language = {en} } @article{Elbers2009, author = {Elbers, Gereon}, title = {Identification of marker peptides in hair for discrimination with regard to species and breed / Koerner, Andrea ; Ring, Maike ; Fabry, Marlies ; Elbers, Gereon ; Moeller, Martin}, series = {Proceedings of the Aachen-Dresden International Textile Conference, 3rd, Aachen, Germany, Nov. 26-27, 2009}, journal = {Proceedings of the Aachen-Dresden International Textile Conference, 3rd, Aachen, Germany, Nov. 26-27, 2009}, publisher = {DWI}, address = {Aachen}, pages = {1 CD-ROM}, year = {2009}, language = {en} } @article{LempiaeinenCouttetBolognanietal.2012, author = {Lempi{\"a}inen, Harri and Couttet, Philippe and Bolognani, Federico and M{\"u}ller, Arne and Dubost, Val{\´e}rie and Luisier, Rapha{\"e}lle and Rio-Espinola, Alberto del and Vitry, Veronique and Unterberger, Elif B. and Thomson, John P. and Treindl, Fridolin and Metzger, Ute and Wrzodek, Clemens and Hahne, Florian and Zollinger, Tulipan and Brasa, Sarah and Kalteis, Magdalena and Marcellin, Magali and Giudicelli, Fanny and Braeuning, Albert and Morawiec, Laurent and Zamurovic, Natasa and L{\"a}ngle, Ulrich and Scheer, Nico and Sch{\"u}beler, Dirk and Goodman, Jay and Chibout, Salah-Dine and Marlowe, Jennifer and Theil, Dietlinde and Heard, David J. and Grenet, Olivier and Zell, Andreas and Templin, Markus F. and Meehan, Richard R. and Wolf, Roland C. and Elcombe, Clifford R. and Schwarz, Michael and Moulin, Pierre and Terranova, R{\´e}mi and Moggs, Jonathan G.}, title = {Identification of Dlk1-Dio3 imprinted gene cluster non-coding RNAs as novel candidate biomarkers for liver tumor promotion}, series = {Toxicological Sciences}, volume = {131}, journal = {Toxicological Sciences}, number = {2}, publisher = {Oxford University Press}, address = {Oxford}, issn = {1094-2025}, doi = {10.1093/toxsci/kfs303}, pages = {375 -- 386}, year = {2012}, abstract = {The molecular events during nongenotoxic carcinogenesis and their temporal order are poorly understood but thought to include long-lasting perturbations of gene expression. Here, we have investigated the temporal sequence of molecular and pathological perturbations at early stages of phenobarbital (PB) mediated liver tumor promotion in vivo. Molecular profiling (mRNA, microRNA [miRNA], DNA methylation, and proteins) of mouse liver during 13 weeks of PB treatment revealed progressive increases in hepatic expression of long noncoding RNAs and miRNAs originating from the Dlk1-Dio3 imprinted gene cluster, a locus that has recently been associated with stem cell pluripotency in mice and various neoplasms in humans. PB induction of the Dlk1-Dio3 cluster noncoding RNA (ncRNA) Meg3 was localized to glutamine synthetase-positive hypertrophic perivenous hepatocytes, sug- gesting a role for β-catenin signaling in the dysregulation of Dlk1-Dio3 ncRNAs. The carcinogenic relevance of Dlk1-Dio3 locus ncRNA induction was further supported by in vivo genetic dependence on constitutive androstane receptor and β-catenin pathways. Our data identify Dlk1-Dio3 ncRNAs as novel candidate early biomarkers for mouse liver tumor promotion and provide new opportunities for assessing the carcinogenic potential of novel compounds.}, language = {en} } @article{HillenLehmannHornetal.1996, author = {Hillen, Walter and Lehmann, T. and Horn, H. and Schmitt, W.}, title = {Identification of Dental Fixtures in Intraoral X-rays. Lehmann, T.; Hillen, W.; Horn, H.; Schmitt, W.}, series = {Medical imaging 1996 : image processing ; 12 - 15 February 1996, Newport Beach, California / Murray H. Loew ... chairs/ed.}, journal = {Medical imaging 1996 : image processing ; 12 - 15 February 1996, Newport Beach, California / Murray H. Loew ... chairs/ed.}, publisher = {SPIE - The International Society for Optical Engineering}, address = {Bellingham, Wash.}, isbn = {0-8194-2085-9}, pages = {584 -- 584}, year = {1996}, language = {en} } @article{WerfelGuenthnerHapfelmeieretal.2022, author = {Werfel, Stanislas and G{\"u}nthner, Roman and Hapfelmeier, Alexander and Hanssen, Henner and Kotliar, Konstantin and Heemann, Uwe and Schmaderer, Christoph}, title = {Identification of cardiovascular high-risk groups from dynamic retinal vessel signals using untargeted machine learning}, series = {Cardiovascular Research}, volume = {118}, journal = {Cardiovascular Research}, number = {2}, editor = {Guzik, Tomasz J.}, publisher = {Oxford University Press}, address = {Oxford}, issn = {0008-6363}, doi = {10.1093/cvr/cvab040}, pages = {612 -- 621}, year = {2022}, abstract = {Dynamic retinal vessel analysis (DVA) provides a non-invasive way to assess microvascular function in patients and potentially to improve predictions of individual cardiovascular (CV) risk. The aim of our study was to use untargeted machine learning on DVA in order to improve CV mortality prediction and identify corresponding response alterations.}, language = {en} } @article{HillenLehmannHornetal.1995, author = {Hillen, Walter and Lehmann, T. and Horn, H. and Schmitt, W.}, title = {IDEFIX - Identification of Dental Fixtures. Lehmann, T.; Hillen, W.; Horn, H.; Schmitt, W.}, series = {5th European Congress on Dental and Maxillo-Facial Radiology : 30th Annual meeting of Working Group for Dental Radiology in the German Scientific Society for Dentistry, November 8-11, 1995, Cologne : abstracts}, journal = {5th European Congress on Dental and Maxillo-Facial Radiology : 30th Annual meeting of Working Group for Dental Radiology in the German Scientific Society for Dentistry, November 8-11, 1995, Cologne : abstracts}, pages = {[120] B. : graph. Darst.}, year = {1995}, language = {en} } @article{DachwaldMikuckiTulaczyketal.2014, author = {Dachwald, Bernd and Mikucki, Jill and Tulaczyk, Slawek and Digel, Ilya and Espe, Clemens and Feldmann, Marco and Francke, Gero and Kowalski, Julia and Xu, Changsheng}, title = {IceMole : A maneuverable probe for clean in situ analysis and sampling of subsurface ice and subglacial aquatic ecosystems}, series = {Annals of Glaciology}, volume = {55}, journal = {Annals of Glaciology}, number = {65}, publisher = {Cambridge University Press}, address = {Cambridge}, issn = {1727-5644}, doi = {10.3189/2014AoG65A004}, pages = {14 -- 22}, year = {2014}, abstract = {There is significant interest in sampling subglacial environments for geobiological studies, but they are difficult to access. Existing ice-drilling technologies make it cumbersome to maintain microbiologically clean access for sample acquisition and environmental stewardship of potentially fragile subglacial aquatic ecosystems. The IceMole is a maneuverable subsurface ice probe for clean in situ analysis and sampling of glacial ice and subglacial materials. The design is based on the novel concept of combining melting and mechanical propulsion. It can change melting direction by differential heating of the melting head and optional side-wall heaters. The first two prototypes were successfully tested between 2010 and 2012 on glaciers in Switzerland and Iceland. They demonstrated downward, horizontal and upward melting, as well as curve driving and dirt layer penetration. A more advanced probe is currently under development as part of the Enceladus Explorer (EnEx) project. It offers systems for obstacle avoidance, target detection, and navigation in ice. For the EnEx-IceMole, we will pay particular attention to clean protocols for the sampling of subglacial materials for biogeochemical analysis. We plan to use this probe for clean access into a unique subglacial aquatic environment at Blood Falls, Antarctica, with return of a subglacial brine sample.}, language = {en} } @article{Grotendorst2012, author = {Grotendorst, Johannes}, title = {IAS Winter School: Hierarchical Methods for Dynamics in Complex Molecular Systems}, series = {Innovatives Supercomputing in Deutschland : inSiDE. 10 (2012), H. 1}, journal = {Innovatives Supercomputing in Deutschland : inSiDE. 10 (2012), H. 1}, publisher = {-}, pages = {104}, year = {2012}, language = {en} } @article{DoorschodtSchreinemachersBehbahanietal.2011, author = {Doorschodt, B. M. and Schreinemachers, M. C. J. M. and Behbahani, Mehdi and Florquin, S. and Weis, J. and Staat, Manfred and Tolba, R. H.}, title = {Hypothermic machine perfusion of kidney grafts: which pressure is preferred}, series = {Annals of Biomedical Engineering. 39 (2011), H. 3}, journal = {Annals of Biomedical Engineering. 39 (2011), H. 3}, publisher = {Springer}, address = {Berlin}, isbn = {1573-9686}, pages = {1051 -- 1059}, year = {2011}, language = {en} } @article{ArtmannGorbatenkovaPanasenko2000, author = {Artmann, Gerhard and Gorbatenkova, E. A. and Panasenko, O. M.}, title = {Hypochlorous acid and human blood low density lipoproteins modified by hypochlorous acid increase erythrocyte adhesion to endothelial cells. Gorbatenkova, E. A.; Artmann, Gerhard Michael; Panasenko, O. M.}, series = {Membrane and cell biology. 13 (2000), H. 4}, journal = {Membrane and cell biology. 13 (2000), H. 4}, isbn = {1023-6597}, pages = {537 -- 546}, year = {2000}, language = {en} } @article{BlomeKundt1987, author = {Blome, Hans-Joachim and Kundt, W.}, title = {Hypersonic Jets from Young Stars in Molecular Clouds}, series = {Circumstellar matter : proceedings of the 122nd symposium of the Internat. Astronom. Union held in Heidelberg, FRG, June 23 - 27, 1986 / ed. by I. Appenzeller ...}, journal = {Circumstellar matter : proceedings of the 122nd symposium of the Internat. Astronom. Union held in Heidelberg, FRG, June 23 - 27, 1986 / ed. by I. Appenzeller ...}, publisher = {Reidel}, address = {Dordrecht u.a.}, isbn = {90-277-2511-X}, pages = {73 -- 74}, year = {1987}, language = {en} } @article{FoersterBruggerMeinersetal.1994, author = {F{\"o}rster, Arnold and Brugger, H. and Meiners, U. and Diniz, R.}, title = {Hydrostatic pressure sensors based on solid state tunneling devices / H. Brugger; U. Meiners ; R. Diniz ... A. F{\"o}rster ...}, series = {Solid state electronics. 37 (1994), H. 4-6}, journal = {Solid state electronics. 37 (1994), H. 4-6}, isbn = {0038-1101}, pages = {801 -- 804}, year = {1994}, language = {en} } @article{RibitschHeumannTrotschaetal.2011, author = {Ribitsch, D. and Heumann, S. and Trotscha, E. and Herrero Acero, E. and Greimel, K. and Leber, R. and Birger-Gruenberger, R. and Deller, S. and Eiteljoerg, I. and Remler, P. and Weber, Th. and Siegert, Petra and Maurer, Karl-Heinz and Donelli, I. and Freddi, G. and Schwab, H. and Guebitz, G. M.}, title = {Hydrolysis of polyethyleneterephthalate by p-nitrobenzylesterase from Bacillus subtilis}, series = {Biotechnology progress}, volume = {Vol. 27}, journal = {Biotechnology progress}, number = {Iss. 4}, publisher = {Wiley}, address = {Hoboken}, issn = {1520-6033 (E-Journal); 8756-7938 (Print)}, pages = {951 -- 960}, year = {2011}, language = {en} } @article{RuebbelkeVoegeleGrajewskietal.2022, author = {R{\"u}bbelke, Dirk and V{\"o}gele, Stefan and Grajewski, Matthias and Zobel, Luzy}, title = {Hydrogen-based steel production and global climate protection: An empirical analysis of the potential role of a European cross border adjustment mechanism}, series = {Journal of Cleaner Production}, volume = {380}, journal = {Journal of Cleaner Production}, number = {Part 2, Art. Nr.:135040}, publisher = {Elsevier}, issn = {0959-6526}, doi = {10.1016/j.jclepro.2022.135040}, year = {2022}, abstract = {The European Union's aim to become climate neutral by 2050 necessitates ambitious efforts to reduce carbon emissions. Large reductions can be attained particularly in energy intensive sectors like iron and steel. In order to prevent the relocation of such industries outside the EU in the course of tightening environmental regulations, the establishment of a climate club jointly with other large emitters and alternatively the unilateral implementation of an international cross-border carbon tax mechanism are proposed. This article focuses on the latter option choosing the steel sector as an example. In particular, we investigate the financial conditions under which a European cross border mechanism is capable to protect hydrogen-based steel production routes employed in Europe against more polluting competition from abroad. By using a floor price model, we assess the competitiveness of different steel production routes in selected countries. We evaluate the climate friendliness of steel production on the basis of specific GHG emissions. In addition, we utilize an input-output price model. It enables us to assess impacts of rising cost of steel production on commodities using steel as intermediates. Our results raise concerns that a cross-border tax mechanism will not suffice to bring about competitiveness of hydrogen-based steel production in Europe because the cost tends to remain higher than the cost of steel production in e.g. China. Steel is a classic example for a good used mainly as intermediate for other products. Therefore, a cross-border tax mechanism for steel will increase the price of products produced in the EU that require steel as an input. This can in turn adversely affect competitiveness of these sectors. Hence, the effects of higher steel costs on European exports should be borne in mind and could require the cross-border adjustment mechanism to also subsidize exports.}, language = {en} } @article{DickhoffHorikawaFunke2021, author = {Dickhoff, Jens and Horikawa, Atsushi and Funke, Harald}, title = {Hydrogen Combustion - new DLE Combustor Addresses NOx Emissions and Flashback}, series = {Turbomachinery international : the global journal of energy equipment}, volume = {62}, journal = {Turbomachinery international : the global journal of energy equipment}, number = {4}, publisher = {MJH Life Sciences}, address = {Cranbury}, issn = {2767-2328}, pages = {26 -- 27}, year = {2021}, language = {en} } @article{BreuerRaueStrobeletal.2016, author = {Breuer, Lars and Raue, Markus and Strobel, M. and Mang, Thomas and Sch{\"o}ning, Michael Josef and Thoelen, R. and Wagner, Torsten}, title = {Hydrogels with incorporated graphene oxide as light-addressable actuator materials for cell culture environments in lab-on-chip systems}, series = {Physica status solidi (a)}, volume = {213}, journal = {Physica status solidi (a)}, number = {6}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1862-6300}, doi = {10.1002/pssa.201533056}, pages = {1520 -- 1525}, year = {2016}, abstract = {Abstractauthoren Graphene oxide (GO) nanoparticles were incorporated in temperature-sensitive Poly(N-isopropylacrylamide) (PNIPAAm) hydrogels. The nanoparticles increase the light absorption and convert light energy into heat efficiently. Thus, the hydrogels with GO can be stimulated spatially resolved by illumination as it was demonstrated by IR thermography. The temporal progression of the temperature maximum was detected for different concentrations of GO within the polymer network. Furthermore, the compatibility of PNIPAAm hydrogels with GO and cell cultures was investigated. For this purpose, culture medium was incubated with hydrogels containing GO and the viability and morphology of chinese hamster ovary (CHO) cells was examined after several days of culturing in presence of this medium.}, language = {en} }