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Disputatio De Grandaevis Altera, eaque Philologico-Physica / Quam ... Publicae ventilationi exponit Praeses M. Johannes Moebius, Martisburgensis, Facultat. Philos. Assessor, Respondente Johanne Haber, Suerinensi Polono, Theol. Stud. Ad diem 15. Maii anni labentis 1689.
Get PDFDISPUTATIO DE GRANDAEVIS ALTERA, EAQUE PHILOLOGICO-PHYSICA / QUAM ... PUBLICAE VENTILATIONI EXPONIT PRAESES M. JOHANNES MOEBIUS, MARTISBURGENSIS, FACULTAT. PHILOS. ASSESSOR, RESPONDENTE JOHANNE HABER, SUERINENSI POLONO, THEOL. STUD. AD DIEM 15. MAII ANNI LABENTIS 1689.
Disputatio De Grandaevis Altera, eaque Philologico-Physica / Quam ... Publicae ventilationi exponit Praeses M. Johannes Moebius, Martisburgensis, Facultat. Philos. Assessor, Respondente Johanne Haber, Suerinensi Polono, Theol. Stud. Ad diem 15. Maii anni labentis 1689. (1)
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Electrified Haber-Bosch Process: Green Ammonia Production
No full textThis report provides a design for a new process to make the ammonia-producing Haber-Bosch process more sustainable by reducing its CO2 emissions. It presents different elements of a process design with most importantly; process diagrams, mass and energy balances and a techno-economic analysis. The most important differences in this process is the use of water electrolysis and nitrogen production. This process emits approximately 50% less CO2 than regular Haber-Bosch methods. Nevertheless, the techno-economic analysis shows that this method is very expensive and that ammonia can only be sold at an acceptable price conform to the market with subsidies on electricity prices and can only become competitive if CO2 taxes are implemented for classic Haber-Bosch plants.Renewables Based Energy Conversion and StorageWB3595 Design ProjectMechanical Engineering | Process and Energy Technolog
The management of customer requirements in a product-service system context. A case study in the medical equipment sector
No full textThe paper addresses the evaluation of customer requirements (CRs) in the implementation of services in a product-service system (PSS) context. The extension of services has expanded considerably, yet their correct combination with products is still problematic to manufacturers. Services are characterised by ambiguities and vagueness, hindering their effective implementation. Conventional product design tools such as quality function deployment (QFD) are limited when comprehending the intangibility of services and hence, evaluating and prioritising customer requirements. To address this topic, QFD is adapted to a service context through the integration of the fuzzy logic and the analytic hierarchy process (AHP) as a means of reducing inaccuracies. The approach is applied to a case study in the medical field and its results are compared to the traditional QFD to analyse its outcomes and the effectiveness of the augmentations in increasing the usefulness of QFD in a PSS context
A practical ANP-QFD methodology for dealing with requirements' inner dependency in PSS development
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Regulation of Saccharomyces Rad53 checkpoint kinase during adaptation from DNA damage-induced G2/M arrest
No full textSaccharomyces cells with one unrepaired double-strand break (DSB) adapt after checkpoint-mediated G2/M arrest. Adaptation is accompanied by loss of Rad53p checkpoint kinase activity and Chk1p phosphorylation. Rad53p kinase remains elevated in yku70Δ and cdc5-ad cells that fail to adapt. Permanent G2/M arrest in cells with increased single-stranded DNA is suppressed by the rfa1-t11 mutation, but this RPA mutation does not suppress permanent arrest in cdc5-ad cells. Checkpoint kinase activation and inactivation can be followed in G2-arrested cells, but there is no kinase activation in G1-arrested cells. We conclude that activation of the checkpoint kinases in response to a single DNA break is cell cycle regulated and that adaptation is an active process by which these kinases are inactivated
Sustainable Product-Service Systems Customization: A Case Study Research in the Medical Equipment Sector
Get PDFThe paper proposes a Product-Service System (PSS) methodology for customizing solutions to different patterns of use while achieving a better environmental performance than a stand-alone product. The approach is based on combining the Quality Function Deployment for Product-Service Systems (QFDforPSS) and the Screening Life Cycle Modeling (SLCM) tools. QFDforPSS is augmented by the Fuzzy Analytical Hierarchy Process (FAHP) to reduce service-related ambiguities and uncertainties on the one hand and better define the product and service characteristics of the solution on the other. The SLCM evaluates the possible outcomes by determining the environmental impact and comparing it with the manufacturer’s current solution. A case study at a manufacturer of medical diagnostic equipment illustrates the use of the approach depicting the possible benefits that can arise: the PSS solution can be customized to fit customers who intensively use the product and consumers with a more moderate use. This offers flexibility and an optimized life cycle through easier maintenance, upgrades, and end-of-life schemes. Concretely, it shows how the PSS approach can enhance the development of sustainable solutions that can be adapted to varying and future customer needs, such as adjusting current solutions to new requirements, i.e., adapting existing products to COVID-19 detection and different levels of use
Product-Service Systems for Circular Supply Chain Management: A Functional Approach
Get PDFGrowing environmental concerns, as well as market competitiveness, are inciting manufacturers to optimize the performance of their products throughout their entire lifecycle. To address these objectives, manufacturing, field service engineering and customer support should be aligned and should strive towards the same end-goal. While several studies have revolved around this context, the product-service system (PSS) approach has emerged as a promising way of meeting manufacturer, customer and environmental requirements alike. Nevertheless, most of these studies revolve around the design and development of a PSS, whilst a minimal amount of research has targeted its impact from the supply chain perspective, leaving aside inventory management. Consequently, the following study utilizes functional hierarchy modeling (FHM) and the PSS concept matrix to propose solutions that make it possible to meet customer requirements and improve the environmental performance and associated costs at the same time. An application at a medical equipment manufacturer brings forward the positive effects suggested by the research and reduces the aforementioned gaps. In detail, the results show a smaller variability in the supply of spare parts combined with optimized maintenance planning, which translates into lesser costs to the manufacturer, a prolonged product life cycle and a reduced environmental impact
Podcast radioWissen: "Fritz Haber - Forscher zwischen Gaskrieg und Chemienobelpreis"
No full textEs fällt nicht leicht, die Lebensleistung des deutschen Chemikers Fritz Haber zu bewerten. Ohne seine Forschungen gäbe es keinen synthetischen Stickstoffdünger. Doch ab 1915 wurde er auch zum "Vater des Gaskriegs". Aufzeichnung der Radiosendung am 07.11.2019 in Bayern
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