Hochschule Bonn-Rhein-Sieg
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Exploring consumer attitudes toward reusable takeaway packaging: An empirical study in Germany
No full textSince the introducing of the new German packaging law 'VerpackG2' in January 2023, food service operators in Germany selling takeout food have been mandated to provide reusable packaging alternatives to single-use plastic food containers. This change in legislation has led to the emergence of various reusable consumer packaging systems in the German market. Reusable packaging systems have the potential to significantly reduce the negative environmental impact of single-use plastic packaging. However, for these systems to succeed and achieve their desired positive environmental impact, a comprehensive understanding of consumer behavior toward these systems is needed. This study extends the Theory of Planned Behaviour (TPB) framework to identify the factors influencing consumers' intentions to use a reusable packaging system for takeaway food in the German food service industry. An online survey was developed, and 153 valid responses were collected from consumers in Germany. Structural equation modeling revealed that in this study, consumers' personal moral norms, attitudes, subjective norms, and perceived behavioral control directly influence consumers' intentions to use the reusable packaging system. The results also show that context, motivation, and personal moral norms are positively related to consumers' attitudes, and context significantly positively affects consumers' perceived behavioral control. Furthermore, the study's results indicate that despite the high frequency of takeaway food orders in Germany, consumers' use of reusable packaging systems for takeaway food still needs to be improved
Proton selective conductance and gating of lysosomal cation channel TMEM175
No full textThe lysosomal cation channel TMEM175 is crucial for maintaining lysosomal function and pH homeostasis, and its aberrant function is linked to Parkinson’s disease (PD). While TMEM175 activity was first interpreted in the context of its potassium (K+) selective conductance, subsequent studies revealed also a substantial permeability to protons (H+). Here we dissect the complex changes in TMEM175 conductance and current reversal voltages in response to pH jumps on the luminal side of the channel protein. In whole-cell patch clamp experiments with plasma membrane redistributed TMEM175 we show that a pH jump from symmetrical pH 7.4 to pH 4.7 on the luminal side triggers a continuous rise in inward and outward current, concomitant with a transient positive excursion of the reversal voltage (Erev). The peak Erev shift remains almost 100 mV below the estimated equilibrium voltage for protons and shows little sensitivity to the K+ gradient. The data are consistent with a scenario in which a TMEM175 mediated proton flux elicits a fast collapse of the pH gradient. In MD simulations we identify the luminal H57 as titratable partner for the formation of intra- and inter-subunit salt bridges with D279 and E282 for stabilizing the channel open state. This presumed gating function is confirmed by mutational studies and lysosomal patch-clamp experiments in which a H57Y mutant exhibits a reduced pH dependency of activation. Our findings contribute to a better comprehension of TMEM175’s complex electrophysiological properties and foster understanding of TMEM175 as a pharmacological target for neurodegenerative disease therapy
Zweite Änderung der Masterprüfungsordnung 2021 (MPO Start- up Development MBA – Wintersemester 2021/2022) für den Studiengang Start-up Development and Impact Innovations (MBA) vom 02.07.2024 am Campus Rheinbach
No full textExperimental and Simulation based Analysis of an Active EMI Filter for automotive PFC Applications
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Implementation of OpenAPI Wireshark Dissectors to Validate SBI Messages of 5G Core Networks
No full textRichtlinie zur Errichtung von wissenschaftlichen Einrichtungen und Betriebseinheiten der Hochschule Bonn-Rhein-Sieg vom 14.09.2024 in der Fassung der letztmaligen Änderung vom 22.10.2024
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Weather as a driver of the energy transition – present and emerging perspectives of energy meteorology
No full textEnergy meteorology is an applied research field of meteorology that focuses on the study and prediction of weather conditions and events that affect energy production and use. This field has become increasingly important as the energy industry has become more dependent on weather conditions, especially in the areas of renewable energy sources such as wind energy, solar energy, and hydropower. The following paper has been written by experts of the Committee on Energy Meteorology of the German Meteorological Society summarizing their more than 30 years of experience and lessons learnt. It gives an overview of activities in energy meteorology that are already essential for the transformation of energy systems to systems with high shares of renewable energies. Building on this, the experts have created a vision of future topics that describe the future research landscape of energy meteorology. The authors explain that work in energy meteorology in recent years has primarily been concerned with the physically based modeling of wind and solar power generation and the development of short-term forecasting systems. In future years, a significant expansion of work in the areas of energy system modeling, digitalization, and climate change is expected. This includes the detailed consideration of regionally specified spatiotemporal variability for system design, the integration of artificial intelligence skills, the development of weather-related consumption based on smart meters, and the mapping of the effects of climate change on the energy system in planning and operating processes
