TY - JOUR A1 - Dantism, Shahriar A1 - Röhlen, Desiree A1 - Selmer, Thorsten A1 - Wagner, Torsten A1 - Wagner, Patrick A1 - Schöning, Michael Josef T1 - Quantitative differential monitoring of the metabolic activity of Corynebacterium glutamicum cultures utilizing a light-addressable potentiometric sensor system JF - Biosensors and Bioelectronics Y1 - 2019 U6 - https://doi.org/10.1016/j.bios.2019.111332 VL - 139 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Dantism, Shahriar A1 - Röhlen, Desiree A1 - Dahmen, Markus A1 - Wagner, Torsten A1 - Wagner, Patrick A1 - Schöning, Michael Josef T1 - LAPS-based monitoring of metabolic responses of bacterial cultures in a paper fermentation broth JF - Sensors and Actuators B: Chemical N2 - As an alternative renewable energy source, methane production in biogas plants is gaining more and more attention. Biomass in a bioreactor contains different types of microorganisms, which should be considered in terms of process-stability control. Metabolically inactive microorganisms within the fermentation process can lead to undesirable, time-consuming and cost-intensive interventions. Hence, monitoring of the cellular metabolism of bacterial populations in a fermentation broth is crucial to improve the biogas production, operation efficiency, and sustainability. In this work, the extracellular acidification of bacteria in a paper-fermentation broth is monitored after glucose uptake, utilizing a differential light-addressable potentiometric sensor (LAPS) system. The LAPS system is loaded with three different model microorganisms (Escherichia coli, Corynebacterium glutamicum, and Lactobacillus brevis) and the effect of the fermentation broth at different process stages on the metabolism of these bacteria is studied. In this way, different signal patterns related to the metabolic response of microorganisms can be identified. By means of calibration curves after glucose uptake, the overall extracellular acidification of bacterial populations within the fermentation process can be evaluated. Y1 - 2020 U6 - https://doi.org/10.1016/j.snb.2020.128232 SN - 0925-4005 VL - 320 IS - Art. 128232 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Dantism, S. A1 - Takenaga, S. A1 - Wagner, P. A1 - Wagner, Torsten A1 - Schöning, Michael Josef T1 - Light-addressable Potentiometric Sensor (LAPS) Combined with Multi-chamber Structures to Investigate the Metabolic Activity of Cells JF - Procedia Engineering N2 - LAPS are field-effect-based potentiometric sensors which are able to monitor analyte concentrations in a spatially resolved manner. Hence, a LAPS sensor system is a powerful device to record chemical imaging of the concentration of chemical species in an aqueous solution, chemical reactions, or the growth of cell colonies on the sensor surface, to record chemical images. In this work, multi-chamber 3D-printed structures made out of polymer (PP-ABS) were combined with LAPS chips to analyse differentially and simultaneously the metabolic activity of Escherichia coli K12 and Chinese hamster ovary (CHO) cells, and the responds of those cells to the addition of glucose solution. Y1 - 2015 U6 - https://doi.org/10.1016/j.proeng.2015.08.647 SN - 1877-7058 N1 - Part of special issue "Eurosensors 2015" VL - 120 SP - 384 EP - 387 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Dannen, Tammo A1 - Schindele, Benedikt A1 - Prümmer, Marcel A1 - Arntz, Kristian A1 - Bergs, Thomas T1 - Methodology for the self-optimizing determination of additive manufacturing process eligibility and optimization potentials in toolmaking T2 - Procedia CIRP Leading manufacturing systems transformation – Proceedings of the 55th CIRP Conference on Manufacturing Systems 2022 N2 - Additive Manufacturing (AM) of metallic workpieces faces a continuously rising technological relevance and market size. Producing complex or highly strained unique workpieces is a significant field of application, making AM highly relevant for tool components. Its successful economic application requires systematic workpiece based decisions and optimizations. Considering geometric and technological requirements as well as the necessary post-processing makes deciding effortful and requires in-depth knowledge. As design is usually adjusted to established manufacturing, associated technological and strategic potentials are often neglected. To embed AM in a future proof industrial environment, software-based self-learning tools are necessary. Integrated into production planning, they enable companies to unlock the potentials of AM efficiently. This paper presents an appropriate methodology for the analysis of process-specific AM-eligibility and optimization potential, added up by concrete optimization proposals. For an integrated workpiece characterization, proven methods are enlarged by tooling-specific figures. The first stage of the approach specifies the model’s initialization. A learning set of tooling components is described using the developed key figure system. Based on this, a set of applicable rules for workpiece-specific result determination is generated through clustering and expert evaluation. Within the following application stage, strategic orientation is quantified and workpieces of interest are described using the developed key figures. Subsequently, the retrieved information is used for automatically generating specific recommendations relying on the generated ruleset of stage one. Finally, actual experiences regarding the recommendations are gathered within stage three. Statistic learning transfers those to the generated ruleset leading to a continuously deepening knowledge base. This process enables a steady improvement in output quality. KW - Additive manufacturing KW - Laser-Powder Bed Fusion KW - L-PBF KW - Binder Jetting KW - Directed Energy Deposition Y1 - 2022 U6 - https://doi.org/10.1016/j.procir.2022.05.188 SN - 2212-8271 N1 - 55th CIRP Conference on Manufacturing Systems, Jun 29, 2022 - Jul 01, 2022, Lugano, Switzerland VL - 107 SP - 1539 EP - 1544 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Dankelmann, Peter A1 - Hellwig, Angelika A1 - Volkmann, Lutz T1 - Inverse degree and edge-connectivity JF - Discrete mathematics Y1 - 2009 SN - 1872-681X (E-Journal); 0012-365X (Print) VL - Vol. 309 IS - Iss. 9 SP - 2943 EP - 2947 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Dankelmann, Peter A1 - Hellwig, Angelika A1 - Volkmann, Lutz T1 - On the connectivity of diamond-free graphs JF - Discrete applied mathematics Y1 - 2007 SN - 0166-218X (E-Journal); 1872-6771 (E-Journal); 0166-218X (Print) VL - Vol. 155 IS - Iss. 16 SP - 2111 EP - 2117 ER - TY - THES A1 - Dankelmann, Florian T1 - Almanya : kulinarische Brücken und Soziale Bindungen der türkischen Diaspora in Deutschland N2 - Die fotografische Arbeit "Almanya" veranschaulicht Teilaspekte der türkischen Kultur anhand von Repräsentantinnen und Repräsentanten der türkeistämmigen Community in Deutschland. Mit einem Fokus auf Kulinarik und Formen des Zusammenlebens werden Menschen mit türkischen Wurzeln porträtiert, sodass am Ende ein Einblick in deren Lebens- und Gedankenwelt ermöglicht wird und kulinarische Brücken zwischen Deutschen und der türkischen Kultur gebaut werden. Die enthaltene Botschaft, welche das Projekt den Rezipient:innen überbringt, ist in einem multikulturellen Land wie Deutschland von großer Wichtigkeit für gegenseitiges Verständnis und bildet den Boden für ein harmonisches Miteinander. KW - Fotografie KW - Kultur KW - Türkei KW - Deutschland KW - Essen Y1 - 2024 N1 - Für diese Arbeit steht kein Volltext zur Verfügung. PB - FH Aachen CY - Aachen ER - TY - JOUR A1 - Danho, Waleed A1 - Naithani, Vinod K. A1 - Sasaki, André N. A1 - Föhles, Joseph A1 - Berndt, Heinz A1 - Büllesbach, Erika E. A1 - Zahn, H. T1 - Human proinsulin, VII : synthesis of two protected peptides corresponding to the sequences 1—45 and 46—86 of the prohormone JF - Hoppe-Seyler's Zeitschrift für physiologische Chemie Y1 - 1980 U6 - https://doi.org/10.1515/bchm2.1980.361.1.857 SN - 1437-4315 SN - 0018-4888 VL - 361 IS - 1 SP - 857 EP - 863 ER - TY - BOOK A1 - Damrau, Karin A1 - Pasing, Anton T1 - Unschärferelationen : Experiment Raum = Uncertainty principles / Hrsg.: Karin Damrau; Anton Markus Pasing. [Bearb.: Bernd Wylicil. Übers.: Annette Wiethüchter] Y1 - 2002 SN - 3-932509-09-9 PB - Nelte CY - Wiesbaden ER - TY - JOUR A1 - Damrau, Karin T1 - Beyond Solidity - Inventions, Spaces and Concepts for the Elements of Air and Water JF - Architectural design : AD. 69 (1999), H. 3-4 Y1 - 1999 SN - 0003-8504 SP - 22 EP - 33 ER -