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By a simple femtosecond laser process, we fabricated metal-oxide/gold composite films for electrical and optical gas sensors. We designed a dripple wavelength AWG-spectrometer, matched to the plasma absorption wavelength region of the composite films. H2/CO absorptions fit well with the AWG design for multi gas detection sensor arrays
In Zeiten zunehmenden Umweltbewusstseins und steigender Energiekosten gewinnt die Optimierung der Energieeffizienz von Anlagen und Gebäudetechnik zunehmend an Bedeutung. Insbesondere im Kontext nachhaltiger und ressourcenschonender Heizungs- und Warmwassersysteme haben sich Wärmepumpen als maßgebliche Technologien etabliert. Die effiziente Bereitstellung von Warmwasser nimmt dabei eine essenzielle Position ein, da sie einen erheblichen Anteil am Gesamtenergieverbrauch eines Gebäudes ausmacht. Die vorliegende Masterarbeit widmet sich der Fragestellung, welchen Einfluss Zirkulationsleitungen auf die Effizienz von Wärmepumpen haben und wie sich alternative dezentrale Warmwasserbereitungssysteme auf diese auswirken. Konkret wird diese Fragestellung am Beispiel einer Mittelschule in Frastanz untersucht. Die Untersuchung erfolgt mithilfe von Simulationen mit der Software GeoT*Sol, wodurch verschiedene Szenarien der Warmwasserbereitung und deren Auswirkungen auf die Jahresarbeitszahl (JAZ) der Wärmepumpe simuliert werden. Es werden sechs Varianten verglichen, darunter der Ist-Stand mit Zirkulationsleitung, eine zeitlich angepasste Zirkulation, eine Variante ohne Zirkulation sowie dezentrale Warmwasserbereitung mit und ohne Photovoltaik-Einbindung. Die Ergebnisse zeigen, dass die Zirkulationsleitung einen signifikanten Einfluss auf die JAZ einer Wärmepumpe hat, da permanent Wärmeverluste entstehen, selbst ohne Warmwasserbedarf. Die dezentrale Warmwasserbereitung mit PV-Einbindung erweist sich als vielversprechend, sowohl in Bezug auf energetische Einsparungen als auch auf finanzielle Rentabilität. Die Masterarbeit bietet somit wichtige Erkenntnisse und Handlungsempfehlungen für die Mittelschule Frastanz, um ihre Energieeffizienz zu steigern und Kosten einzusparen. Die Empfehlungen zur Beibehaltung der Bestandswärmepumpe, der Installation dezentraler Warmwasserbereitungsanlagen und der PV-Anlage können als Grundlage für zukünftige Investitionsentscheidungen dienen und einen Beitrag zum nachhaltigen Energiemanagement der Schule leisten.
Objectives: The MetabQoL 1.0 is the first disease-specific health related quality of life (HrQoL) questionnaire for patients with intoxication-type inherited metabolic disorders. Our aim was to assess the validity and reliability of the MetabQoL 1.0, and to investigate neuropsychiatric burden in our patient population. Methods: Data from 29 patients followed at a single center, aged between 8 and 18 years with the diagnosis of methylmalonic acidemia (MMA), propionic acidemia (PA) or isovaleric acidemia (IVA), and their parents were included. The Pediatric Quality of Life Inventory (PedsQoL) was used to evaluate the validity and reliability of MetabQoL 1.0.
Results: The MetabQoL 1.0 was shown to be valid and reliable (Cronbach's alpha: 0.64–0.9). Fourteen out of the 22 patients (63.6%) formally evaluated had neurological findings. Of note, 17 out of 20 patients (85%) had a psychiatric disorder when evaluated formally by a child and adolescent psychiatrist. The median mental scores of the MetabQoL 1.0 proxy report were significantly higher than those of the self report (p = 0.023). Patients with neonatal-onset disease had higher MetabQoL 1.0 proxy physical (p = 0.008), mental (p = 0.042), total scores (p = 0.022); and self report social (p = 0.007) and total scores (p = 0.043) than those with later onset disease.
Conclusions: This study continues to prove that the MetabQoL 1.0 is an effective tool to measure what matters in intoxication-type inherited metabolic disorders. Our results highlight the importance of clinical assessment complemented by patient reported outcomes which further expands the evaluation toolbox of inherited metabolic diseases.
In this paper, we consider the question of data aggregation using the practical example of emissions data for economic activities for the sustainability assessment of regional bank clients. Given the current scarcity of company-specific emission data, an approximation relies on using available public data. These data are reported in different standards in different sources. To determine a mapping between the different standards, an adaptation to the Covariance Matrix Self-Adaptation Evolution Strategy is proposed. The obtained results show that high-quality mappings are found. Nevertheless, our approach is transferable to other data compatibility problems. These can be found in the merging of emissions data for other countries, or in bridging the gap between completely different data sets.
Coupling is one of the most frequently mentioned metric in software systems. However, to measure logical coupling between microservices, runtime information is needed or the availability of service-log files to analyze the calls between services is required. This work presents our emerging results, in which we propose a metric to statically calculate logical coupling between microservices based on commits to versioning systems. We performed an initial validation of the proposed metric with a dataset containing 145 open-source microservices projects. The results illustrate how logical coupling affects every system and increases overtime. However, we did not find a correlation between the number of commits or the number of developers and the introduction of logical coupling. In future, we investigate why, how, and when logical coupling is introduced in a system.
This paper presents design, simulation, and optimization of the three-dimensional 1×4 optical multimode interference splitter using IP-Dip polymer as a core and polydimethylsiloxane (PDMS) Sylgard 184 as a cladding. The splitter was simulated by using beam propagation method in BeamPROP simulation engine of RSoft photonic tool and optimized for an operating wavelength of 1.55 µm. According to the minimum insertion loss, the dimensions of the MMI coupler and the length of the whole MMI splitter structure were optimized applying a waveguide with a core size of 4×4 µm2. The objective of the study is to create a design for fabrication by three-dimensional direct laser writing optical lithography.
Design, simulation, and optimization of the 1×4 optical three-dimensional multimode interference splitter using IP-Dip polymer as a core and polydimethylsiloxane (PDMS) Sylgard 184 as a cladding is demonstrated. The splitter was simulated by using beam propagation method in BeamPROP simulation module of RSoft photonic tool and optimized for an operating wavelength of 1.55 μm . According to the minimum insertion loss, the dimensions of the splitter were optimized for a waveguide with a core size of 4×4 μm2 . The objective of the study is to create the design for fabrication by three-dimensional direct laser writing optical lithography.