@article{TippkoetterDuweWiesenetal.2014, author = {Tippk{\"o}tter, Nils and Duwe, Anna-Maria and Wiesen, Sebastian and Sieker, Tim and Ulber, Roland}, title = {Enzymatic hydrolysis of beech wood lignocellulose at high solid contents and its utilization as substrate for the production of biobutanol and dicarboxylic acids}, series = {Bioresource Technology}, volume = {167}, journal = {Bioresource Technology}, publisher = {Elsevier}, address = {Amsterdam}, doi = {10.1016/j.biortech.2014.06.052}, pages = {447 -- 455}, year = {2014}, abstract = {The development of a cost-effective hydrolysis for crude cellulose is an essential part of biorefinery developments. To establish such high solid hydrolysis, a new solid state reactor with static mixing is used. However, concentrations >10\% (w/w) cause a rate and yield reduction of enzymatic hydrolysis. By optimizing the synergetic activity of cellulolytic enzymes at solid concentrations of 9\%, 17\% and 23\% (w/w) of crude Organosolv cellulose, glucose concentrations of 57, 113 and 152 g L⁻¹ are reached. However, the glucose yield decreases from 0.81 to 0.72gg⁻¹ at 17\% (w/w). Optimal conditions for hydrolysis scale-up under minimal enzyme addition are identified. As result, at 23\% (w/w) crude cellulose the glucose yield increases from 0.29 to 0.49gg⁻¹. As proof of its applicability, biobutanol, succinic and itaconic acid are produced with the crude hydrolysate. The potential of the substrate is proven e.g. by a high butanol yield of 0.33gg⁻¹.}, language = {en} } @article{GoettenFingerHavermannetal.2018, author = {G{\"o}tten, Falk and Finger, Felix and Havermann, Marc and Braun, Carsten and Gomez, Francisco and Bill, C.}, title = {On the flight performance impact of landing gear drag reduction methods for unmanned air vehicles}, series = {Deutscher Luft- und Raumfahrtkongress 2018}, journal = {Deutscher Luft- und Raumfahrtkongress 2018}, publisher = {DGLR}, address = {Bonn}, doi = {10.25967/480058}, pages = {11 S.}, year = {2018}, abstract = {The flight performance impact of three different landing gear configurations on a small, fixed-wing UAV is analyzed with a combination of RANS CFD calculations and an incremental flight performance algorithm. A standard fixed landing gear configuration is taken as a baseline, while the influence of retracting the landing gear or applying streamlined fairings is investigated. A retraction leads to a significant parasite drag reduction, while also fairings promise large savings. The increase in lift-to-drag ratio is reduced at high lift coefficients due to the influence of induced drag. All configurations are tested on three different design missions with an incremental flight performance algorithm. A trade-off study is performed using the retracted or faired landing gear's weight increase as a variable. The analysis reveals only small mission performance gains as the aerodynamic improvements are negated by weight penalties. A new workflow for decision-making is presented that allows to estimate if a change in landing gear configuration is beneficial for a small UAV.}, language = {en} } @article{ChristiaensAbouzarPoghossianetal.2007, author = {Christiaens, P. and Abouzar, Maryam H. and Poghossian, Arshak and Wagner, Torsten and Bijnens, N. and Williams, O. A. and Daenen, M. and Haenen, K. and Sch{\"o}ning, Michael Josef and Wagner, P.}, title = {Nanocrystalline diamond-based field-effect capacitive pH sensor}, series = {Transducers '07 Eurosensors XXI : digest of technical papers ; the14th International Conference on Solid-State Sensors, Actuators and Microsystems, June 10-14, 2007, Lyon, France / Gilles Delapierre (Ed.)}, journal = {Transducers '07 Eurosensors XXI : digest of technical papers ; the14th International Conference on Solid-State Sensors, Actuators and Microsystems, June 10-14, 2007, Lyon, France / Gilles Delapierre (Ed.)}, publisher = {IEEE}, address = {Piscataway}, isbn = {1-4244-0841-5}, pages = {1891 -- 1894}, year = {2007}, language = {en} } @article{SchoeningAbouzarIngebrandtetal.2006, author = {Sch{\"o}ning, Michael Josef and Abouzar, Maryam H. and Ingebrandt, Sven and Platen, Johannes and Offenh{\"a}usser, Andreas and Poghossian, Arshak}, title = {Towards label-free detection of charged macromolecules using field-effect-based structures : Scaling down from capacitive EIS sensor over ISFET to nano-scale devices}, series = {Nanostructured materials and hybrid composites for gas sensors and biomedical applications : symposium held April 18-20, 2006, San Francisco , California, U.S.A.}, journal = {Nanostructured materials and hybrid composites for gas sensors and biomedical applications : symposium held April 18-20, 2006, San Francisco , California, U.S.A.}, number = {paper 0915-R05-04}, editor = {Comini, Elisabetta}, isbn = {9781558998711}, pages = {89 -- 94}, year = {2006}, language = {en} } @article{AbouzarPedrazaSchoeningetal.2010, author = {Abouzar, Maryam H. and Pedraza, A. M. and Sch{\"o}ning, Michael Josef and Poghossian, Arshak}, title = {Label-free DNA hybridization and denaturation detection by means of field-effect nanoplate SOI capacitors functionalized with gold nanoparticles}, series = {Procedia Engineering. 5 (2010)}, journal = {Procedia Engineering. 5 (2010)}, isbn = {1877-7058}, pages = {918 -- 921}, year = {2010}, language = {en} } @article{SchildtBraunMarzocca2019, author = {Schildt, Ph. and Braun, Carsten and Marzocca, P.}, title = {Metric evaluating potentials of condition-monitoring approaches for hybrid electric aircraft propulsion systems}, series = {CEAS Aeronautical Journal}, journal = {CEAS Aeronautical Journal}, publisher = {Springer}, address = {Berlin}, issn = {1869-5590}, doi = {10.1007/s13272-019-00411-3}, pages = {1 -- 14}, year = {2019}, language = {en} } @article{DigelKurulganDemirciLinderetal.2007, author = {Digel, Ilya and Kurulgan Demirci, Eylem and Linder, Peter and Kayser, Peter}, title = {Decrease in extracellular collagen crosslinking after NMR magnetic field application in skin fibroblasts}, series = {Medical and Biological Engineering and Computing. 45 (2007), H. 1}, journal = {Medical and Biological Engineering and Computing. 45 (2007), H. 1}, isbn = {1741-0444}, pages = {91 -- 97}, year = {2007}, language = {en} } @article{SchwarzerGoettscheJellinghaus2006, author = {Schwarzer, Klemens and G{\"o}ttsche, Joachim and Jellinghaus, Sabine}, title = {FORSCHUNG UND TECHNIK - Messtechnik - Was will der Nutzer? Eine langfristige Studie hat Nutzer zu einer Farblichtsteuerung befragt (Teil 2)}, series = {Licht : Planung, Design, Technik, Handel ; Organ der Deutschen Lichttechnischen Gesellschaft e.V. (LiTG) ; Organ des Normenausschusses Lichttechnik (FNL) im DIN Deutsches Institut f{\"u}r Normung e.V. ; Organ des Verbandes Wohnraumleuchten-, Lampenschirm und . 58 (2006), H. 9}, journal = {Licht : Planung, Design, Technik, Handel ; Organ der Deutschen Lichttechnischen Gesellschaft e.V. (LiTG) ; Organ des Normenausschusses Lichttechnik (FNL) im DIN Deutsches Institut f{\"u}r Normung e.V. ; Organ des Verbandes Wohnraumleuchten-, Lampenschirm und . 58 (2006), H. 9}, isbn = {0024-2861}, pages = {862 -- 867}, year = {2006}, language = {de} } @article{TippkoetterWollnySucketal.2014, author = {Tippk{\"o}tter, Nils and Wollny, Steffen and Suck, Kirstin and Sohling, Ulrich and Ruf, Friedrich and Ulber, Roland}, title = {Recycling of spent oil bleaching earth as source of glycerol for the anaerobic production of acetone, butanol, and ethanol with Clostridium diolis and lipolytic Clostridium lundense}, series = {Engineering in Life Sciences}, volume = {14}, journal = {Engineering in Life Sciences}, number = {4}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1618-2863}, doi = {10.1002/elsc.201300113}, pages = {425 -- 432}, year = {2014}, abstract = {A major part of edible oil is subjected to bleaching procedures, primarily with minerals applied as adsorbers. Their recycling is currently done either by regaining the oil via organic solvent extraction or by using the spent bleaching earth (SBE) as additive for animal feed, etc. As a new method, the reutilization of the by-product SBE for the microbiologic formation of acetone, butanol, and ethanol (ABE) is presented as proof-of-concept. The SBE was taken from a palm oil cleaning process. The recycling concept is based on the application of lipolytic clostridia strains. Due to considerably long fermentation times, co-fermentation with Candida rugosa and enzymatic hydrolyses of the bound oil with a subsequent clostridia fermentation are shown as alternative routes. Anaerobic fermentations under comparison of different clostridia strains were performed with glycerol media, enzymatically hydrolyzed palm oil and SBE. Solutes, side product compositions and productivities were quantified via HPLC. A successful production of ABE solutes from SBE has been done with a yield of 0.15 g butanol per gram of bound glycerol. Thus, the biotechnological recycling of the waste stream is possible in principle. Inhibition of the substrate suspension has been observed. A chromatographic ion-exchange of substrates increased the biomass concentration.}, language = {en} } @article{SchusserPoghossianBaeckeretal.2012, author = {Schusser, Sebastian and Poghossian, Arshak and B{\"a}cker, Matthias and Leinhos, Marcel and Wagner, Patrick and Sch{\"o}ning, Michael Josef}, title = {Characterization of biodegradable polymers with capacitive field-effect sensors}, series = {Sensors and actuators B: Chemical}, volume = {187}, journal = {Sensors and actuators B: Chemical}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0925-4005}, doi = {10.1016/j.snb.2012.07.099}, pages = {2 -- 7}, year = {2012}, abstract = {In vitro studies of the degradation kinetic of biopolymers are essential for the design and optimization of implantable biomedical devices. In the presented work, a field-effect capacitive sensor has been applied for the real-time and in situ monitoring of degradation processes of biopolymers for the first time. The polymer-covered field-effect sensor is, in principle, capable to detect any changes in bulk, surface and interface properties of the polymer induced by degradation processes. The feasibility of this approach has been experimentally proven by using the commercially available biomedical polymer poly(D,L-lactic acid) (PDLLA) as a model system. PDLLA films of different thicknesses were deposited on the Ta₂O₅-gate surface of the field-effect structure from a polymer solution by means of spin-coating method. The polymer-modified field-effect sensors have been characterized by means of capacitance-voltage and impedance-spectroscopy method. The degradation of the PDLLA was accelerated by changing the degradation medium from neutral (pH 7.2) to alkaline (pH 9) condition, resulting in drastic changes in the capacitance and impedance spectra of the polymer-modified field-effect sensor.}, language = {en} } @article{SchusserKrischerMolinetal.2015, author = {Schusser, Sebastian and Krischer, M. and Molin, D. G. M. and Akker, N. M. S. van den and B{\"a}cker, Matthias and Poghossian, Arshak and Sch{\"o}ning, Michael Josef}, title = {Sensor System for in-situ and Real-time Monitoring of Polymer (bio) degradation}, series = {Procedia Engineering}, volume = {120}, journal = {Procedia Engineering}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1877-7058}, doi = {10.1016/j.proeng.2015.08.815}, pages = {948 -- 951}, year = {2015}, abstract = {A sensor system for investigating (bio)degradationprocesses of polymers is presented. The system utilizes semiconductor field-effect sensors and is capable of monitoring the degradation process in-situ and in real-time. The degradation of the polymer poly(d,l-lactic acid) is exemplarily monitored in solutions with different pH value, pH-buffer solution containing the model enzyme lipase from Rhizomucormiehei and cell-culture medium containing supernatants from stimulated and non-stimulated THP-1-derived macrophages mimicking activation of the immune system.}, language = {en} } @masterthesis{Glueck2023, type = {Bachelor Thesis}, author = {Gl{\"u}ck, Anna}, title = {Entwicklung eines Erscheinungsbildes f{\"u}r ein Unternehmen im Bereich Bioenergiefassaden}, publisher = {FH Aachen}, address = {Aachen}, pages = {88 Seiten}, year = {2023}, abstract = {Nachhaltige Technologien, die Ressourcen schonen und Energie gewinnen, erlangen zunehmend an Bedeutung im urbanen Raum. Diese Bachelorarbeit befasst sich mit der Entwicklung eines Corporate Designs f{\"u}r ein Unternehmen, das sich auf die Fertigung und Planung von Bioenergiefassaden spezialisiert hat. Das Unternehmen sorgt durch seinen Fokus auf nachhaltige Energiegewinnung und effiziente Geb{\"a}udeplanung f{\"u}r die Verbesserung der {\"o}kologischen Herausforderungen. Das Ziel des neuen Corporate Designs ist es, die komplexe Thematik der Bioenergiefassaden der Zielgruppe effektiv zu vermitteln und ihr Interesse f{\"u}r dieses System zu wecken. Dabei werden Illustrationen und Infografiken eingesetzt, um die Technologie verst{\"a}ndlich darzustellen, die positiven Umweltauswirkungen sowie Vorteile der Bioenergiefassaden deutlich hervorzuheben und mehr Umsetzungen zu erzielen.}, language = {de} } @article{GasparyanPoghossianVitusevichetal.2009, author = {Gasparyan, F. V. and Poghossian, Arshak and Vitusevich, S. A. and Petrychuk, M. V. and Sydoruk, V. A. and Surmalyan, A. V. and Siqueira, J. R. and Oliveira, O. N. and Offenh{\"a}usser, A. and Sch{\"o}ning, Michael Josef}, title = {Low Frequency Noise In Electrolyte-Gate Field-Effect Devices Functionalized With Dendrimer/Carbon-Nanotube Multilayers}, series = {Noise and fluctuations : 20th International Conference on Noise and Fluctuations, ICNF 2009, Pisa, Italy, 14 - 19 June 2009 / ed. Massimo Macucci; Giovanni Basso}, journal = {Noise and fluctuations : 20th International Conference on Noise and Fluctuations, ICNF 2009, Pisa, Italy, 14 - 19 June 2009 / ed. Massimo Macucci; Giovanni Basso}, publisher = {American Inst. of Physics}, address = {Melville, NY}, isbn = {9780735406650}, pages = {133 -- 136}, year = {2009}, language = {en} } @article{BuniatyanAbouzarMartirosyanetal.2010, author = {Buniatyan, Vahe V. and Abouzar, Maryam H. and Martirosyan, Norayr W. and Schubert, J{\"u}rgen and Gevorgian, Spartak and Sch{\"o}ning, Michael Josef and Poghossian, Arshak}, title = {pH-sensitive properties of barium strontium titanate (BST) thin films prepared by pulsed laser deposition technique}, series = {Physica Status Solidi (A). 207 (2010), H. 4}, journal = {Physica Status Solidi (A). 207 (2010), H. 4}, isbn = {1862-6300}, pages = {824 -- 830}, year = {2010}, language = {en} } @article{HeuermannSchiek1994, author = {Heuermann, Holger and Schiek, B.}, title = {Robust Algorithms for Txx Network Analyzer Self-Calibration Procedures}, series = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 43 (1994), H. 1}, journal = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 43 (1994), H. 1}, isbn = {0018-9456}, pages = {18 -- 23}, year = {1994}, language = {en} } @article{StaatFioriniLensaetal.1997, author = {Staat, Manfred and Fiorini, G. L. and Lensa, W. von and Burgazzi, L.}, title = {Reliability Methods for Passive Safety Functions}, series = {Proceedings of the SMiRT 14 Post Conference Seminar No 18 on Passive Safety Features in Nuclear Installations}, journal = {Proceedings of the SMiRT 14 Post Conference Seminar No 18 on Passive Safety Features in Nuclear Installations}, address = {Pisa}, year = {1997}, language = {en} } @masterthesis{Herrmann2023, type = {Bachelor Thesis}, author = {Herrmann, Luna}, title = {Blind Shopping}, publisher = {FH Aachen}, address = {Aachen}, pages = {104 Seiten}, year = {2023}, abstract = {Das Einkaufen in Einkaufszentren oder Ladenstraßen ist f{\"u}r Menschen ohne Sehbehinderung eine selbstverst{\"a}ndliche T{\"a}tigkeit. F{\"u}r Menschen mit Sehbehinderung gibt es bis heute keine M{\"o}glichkeit, sich ohne Hilfe von Familienmitgliedern, Freund:innen oder Pflegepersonal in einem Einkaufszentrum zurechtzufinden. Genau dieses Problem l{\"o}st "NAVON.". Er ist ein intelligenter und smarter Blindenstock, welcher durch Ultraschalldistanzsensoren fr{\"u}hzeitig Hindernisse erkennt und die M{\"o}glichkeit bietet, den Betroffenen durch das Einkaufszentrum zu lotsen. Die Logik des Systems liegt innerhalb des Handgriffs, welcher die wichtigsten Einstellungen bzgl. Sprache und haptischer Bedienelemente steuert. Ebenfalls gibt er dem Betroffenen auch ein haptisches Feedback, um Hindernisse fr{\"u}hzeitig umgehen zu k{\"o}nnen. "NAVON." ist ein wichtiger Ansatz f{\"u}r eine neue Kategorie von Produkten und Blindenst{\"o}cken. Dar{\"u}ber hinaus birgt das Konzept auch weitere Potenziale f{\"u}r {\"o}ffentliche Geb{\"a}ude ({\"A}mter, Krankenh{\"a}user, etc..).}, language = {de} } @article{PoghossianAbouzarRazavietal.2009, author = {Poghossian, Arshak and Abouzar, Maryam H. and Razavi, A. and B{\"a}cker, Matthias and Bijnens, N. and Williams, O. A. and Haenen, K. and Moritz, W. and Wagner, P. and Sch{\"o}ning, Michael Josef}, title = {Nanocrystalline-diamond thin films with high pH and penicillin sensitivity prepared on a capacitive Si-SiO2 structure}, series = {Electrochimica Acta. 54 (2009), H. 25}, journal = {Electrochimica Acta. 54 (2009), H. 25}, isbn = {0013-4686}, pages = {5981 -- 5985}, year = {2009}, language = {en} } @inproceedings{ValeroKramerBungetal.2019, author = {Valero, Daniel and Kramer, Matthias and Bung, Daniel Bernhard and Chanson, Hubert}, title = {A stochastic bubble generator for air-water flow research}, series = {E-proceedings of the 38th IAHR World Congress, September 1-6, 2019, Panama City, Panama}, booktitle = {E-proceedings of the 38th IAHR World Congress, September 1-6, 2019, Panama City, Panama}, doi = {10.3850/38WC092019-0909}, pages = {5714 -- 5721}, year = {2019}, language = {en} } @inproceedings{BeckerEggertFleischeretal.2013, author = {Becker, J{\"o}rg and Eggert, Mathias and Fleischer, Stefan and Knackstedt, Ralf}, title = {How to Teach Regulatory Compliant Data Warehouse Engineering?}, series = {Proceedings of the Nineteenth Americas Conference on Information Systems, Chicago, Illinois, August 15-17, 2013.}, booktitle = {Proceedings of the Nineteenth Americas Conference on Information Systems, Chicago, Illinois, August 15-17, 2013.}, pages = {10 S.}, year = {2013}, language = {en} }