TY - CHAP A1 - Alhaskir, Mohamed A1 - Tschesche, Matteo A1 - Linke, Florian A1 - Schriewer, Elisabeth A1 - Weber, Yvonne A1 - Wolking, Stefan A1 - Röhrig, Rainer A1 - Koch, Henner A1 - Kutafina, Ekaterina ED - Röhrig, Rainer ED - Grabe, Niels ED - Haag, Martin ED - Hübner, Ursula ED - Sax, Ulrich ED - Schmidt, Carsten Oliver ED - Sedlmayr, Martin ED - Zapf, Antonia T1 - ECG matching: an approach to synchronize ECG datasets for data quality comparisons T2 - Proceedings of the 68th Annual Meeting of the German Association of Medical Informatics, Biometry, and Epidemiology e.V. (gmds) 2023 N2 - Clinical assessment of newly developed sensors is important for ensuring their validity. Comparing recordings of emerging electrocardiography (ECG) systems to a reference ECG system requires accurate synchronization of data from both devices. Current methods can be inefficient and prone to errors. To address this issue, three algorithms are presented to synchronize two ECG time series from different recording systems: Binned R-peak Correlation, R-R Interval Correlation, and Average R-peak Distance. These algorithms reduce ECG data to their cyclic features, mitigating inefficiencies and minimizing discrepancies between different recording systems. We evaluate the performance of these algorithms using high-quality data and then assess their robustness after manipulating the R-peaks. Our results show that R-R Interval Correlation was the most efficient, whereas the Average R-peak Distance and Binned R-peak Correlation were more robust against noisy data. KW - Electrocardiography KW - Wearable electronic device KW - Sensors comparison KW - Time-series synchronization Y1 - 2023 SN - 978-1-64368-428-4 (Print) SN - 978-1-64368-429-1 (Online) U6 - https://doi.org/10.3233/SHTI230718 N1 - Proceedings of the 68th Annual Meeting of the German Association of Medical Informatics, Biometry, and Epidemiology e.V. (gmds) 2023, 17. - 21.9.23, Heilbronn, Germany Part of the series: Studies in Health Technology and Informatics VL - 307 SP - 225 EP - 232 PB - IOS Press ER - TY - THES A1 - Alef, Sabrina T1 - Miela : digitale Wissensvermittlung für Vorschulkinder N2 - Kinder sind bei der Suche nach Antworten auf ihre Fragen in unserer medialen Gesellschaft stark mit dem digitalen Raum konfrontiert. Diese Medien können bei einer nicht kindergerechten Benutzung wichtige Entwicklungsprozesse hindern. Im Gegensatz dazu geben diese aber auch die Möglichkeit, Kindern wichtige Denkgewohnheiten beizubringen und sie besser auf die Zukunft vorzubereiten. Ziel der Arbeit ist es, eine Verbindung zwischen der analogen und digitalen Welt herzustellen und ein vielfältiges Lernen zu ermöglichen. Die App „miela“ schafft eine neue Ebene der Wissensvermittlung durch die Kombination von digitaler und analoger Welt. Das Userinterface ist altersentsprechend gestaltet und bietet unterschiedliche Themenfelder an, wobei die Wissensvermittlung und die Kreativität im Fokus stehen. Eine Zusammenarbeit mit der Toniebox als digitale Erweiterung kann weitere Themenfelder anbieten. KW - Digitales Lernen KW - Kinder KW - Analoge und Digitale Welt KW - Kreativität KW - Wissensvermittlung Y1 - 2023 PB - FH Aachen CY - Aachen ER - TY - JOUR A1 - Adels, Klaudia A1 - Elbers, Gereon A1 - Diehl, Bernd A1 - Monakhova, Yulia T1 - Multicomponent analysis of dietary supplements containing glucosamine and chondroitin: comparative low- and high-field NMR spectroscopic study JF - Analytical Sciences N2 - With the prevalence of glucosamine- and chondroitin-containing dietary supplements for people with osteoarthritis in the marketplace, it is important to have an accurate and reproducible analytical method for the quantitation of these compounds in finished products. NMR spectroscopic method based both on low- (80 MHz) and high- (500–600 MHz) field NMR instrumentation was established, compared and validated for the determination of chondroitin sulfate and glucosamine in dietary supplements. The proposed method was applied for analysis of 20 different dietary supplements. In the majority of cases, quantification results obtained on the low-field NMR spectrometer are similar to those obtained with high-field 500–600 MHz NMR devices. Validation results in terms of accuracy, precision, reproducibility, limit of detection and recovery demonstrated that the developed method is fit for purpose for the marketed products. The NMR method was extended to the analysis of methylsulfonylmethane, adulterant maltodextrin, acetate and inorganic ions. Low-field NMR can be a quicker and cheaper alternative to more expensive high-field NMR measurements for quality control of the investigated dietary supplements. High-field NMR instrumentation can be more favorable for samples with complex composition due to better resolution, simultaneously giving the possibility of analysis of inorganic species such as potassium and chloride. KW - Glucosamine KW - Chondroitin sulfate KW - Polysaccharides KW - Dietary supplements KW - High-field NMR Y1 - 2023 U6 - https://doi.org/10.1007/s44211-023-00433-2 SN - 1348-2246 (Online) SN - 0910-6340 (Print) N1 - Corresponding author: Yulia Monakhova VL - 2023 PB - Springer Verlag CY - Cham ER - TY - JOUR A1 - Abbas, Karim A1 - Hedwig, Lukas A1 - Balc, Nicolae A1 - Bremen, Sebastian T1 - Advanced FFF of PEEK: Infill strategies and material characteristics for rapid tooling JF - Polymers N2 - Traditional vulcanization mold manufacturing is complex, costly, and under pressure due to shorter product lifecycles and diverse variations. Additive manufacturing using Fused Filament Fabrication and high-performance polymers like PEEK offer a promising future in this industry. This study assesses the compressive strength of various infill structures (honeycomb, grid, triangle, cubic, and gyroid) when considering two distinct build directions (Z, XY) to enhance PEEK’s economic and resource efficiency in rapid tooling. A comparison with PETG samples shows the behavior of the infill strategies. Additionally, a proof of concept illustrates the application of a PEEK mold in vulcanization. A peak compressive strength of 135.6 MPa was attained in specimens that were 100% solid and subjected to thermal post-treatment. This corresponds to a 20% strength improvement in the Z direction. In terms of time and mechanical properties, the anisotropic grid and isotropic cubic infill have emerged for use in rapid tooling. Furthermore, the study highlights that reducing the layer thickness from 0.15 mm to 0.1 mm can result in a 15% strength increase. The study unveils the successful utilization of a room-temperature FFF-printed PEEK mold in vulcanization injection molding. The parameters and infill strategies identified in this research enable the resource-efficient FFF printing of PEEK without compromising its strength properties. Using PEEK in rapid tooling allows a cost reduction of up to 70% in tool production. KW - polyetheretherketone (PEEK) KW - rapid tooling KW - infill strategy KW - compression behavior KW - additive manufacturing KW - fused filament fabrication Y1 - 2023 U6 - https://doi.org/10.3390/polym15214293 N1 - This article belongs to the Special Issue "Polymer Materials and Design Processes for Additively Manufactured Products" VL - 2023 IS - 15 PB - MDPI CY - Basel ER - TY - GEN T1 - Prüfungsordnung für die Bachelorstudiengänge „Biotechnologie“ und „Biotechnologie mit Praxis- oder Auslandssemester“ im Fachbereich Chemie und Biotechnologie an der FH Aachen BT - vom 2. Mai 2023 – FH-Mitteilung Nr. 37/2023 in der Fassung der Bekanntmachung der Änderungsordnung vom 3. Juli 2023 – FH-Mitteilung Nr. 55/2023 (Nichtamtliche lesbare Fassung) N2 - § 1 | Geltungsbereich der Prüfungsordnung § 2 | Ziel des Studiums, Zweck der Prüfung, Abschlussgrad § 3 | Beginn, Dauer, Umfang und Gliederung des Studiums § 4 | Zugang zum Studium, Praktikum § 5 | Prüfungsausschuss § 6 | Studien- und Prüfungselemente § 7 | Zulassung zu den Prüfungen § 8 | Durchführung von Prüfungen § 9 | Verbesserungsversuch § 10 | Anrechnung von Studienzeiten, Studien- und Prüfungsleistungen § 11 | Praxissemester § 12 | Mobilitätssemester (Auslandssemester) § 13 | Bachelorprojekt§ 14 | Gesamtnote, Zeugnis, Bachelorurkunde § 15 | Inkrafttreten, Veröffentlichung Anlage 1 | Studienplan Kernstudium Anlage 2 | Allgemeine Kompetenzen T3 - FH-Mitteilungen - 56/2023 KW - Amtliche Mitteilungen KW - Prüfungsordnung KW - Bachelor Y1 - 2023 CY - Aachen ER - TY - JOUR T1 - Dimensionen Nr. 30 / 2023: Magazin der FH Aachen University of Applied Sciences - Der Mensch im Mittelpunkt N2 - 06| Warum es gemeinsam besser geht 10| Interview 14| Wer ist hier der Boss? 18| Schnittstelle zwischen Mensch und Technik 22| Zweite Heimat Jülich 28| Zwischen Angst und Hoffnung 32| Eine Sternstunde für die FH Aachen 36| Gegen alle Widerstände 38| Ein Ort, der bleibt 42| Der Aufblühende 46| Der Computer sitzt am Steuer 52| Da geht das Herz auf 54| Hoch hinaus 58| Beratungsangebote 60| Das alte Schätzchen T3 - Dimensionen - Magazin der FH Aachen University of Applied Sciences - 01/2023 Y1 - 2023 CY - Aachen ER -