نتایج جستجو برای: system life cycle
تعداد نتایج: 3052068 فیلتر نتایج به سال:
Impacts on the environment from human activities are now threatening to exceed thresholds for central Earth System processes, potentially moving the Earth System out of the Holocene state. To avoid such consequences, the concept of Planetary Boundaries was defined in 2009, and updated in 2015, for a number of processes which are essential for maintaining the Earth System in its present state. L...
Abstract Purpose The primary objective of this study was to evaluate the environmental impact and financial cost repairing surgical scissors. Methods We used life cycle assessment (LCA) analysis estimate impacts functional unit one use a reusable scissor (manufactured in Germany UK), three baseline scenarios were compared: no repair, onsite (hospital), offsite (external contract) repair. This ‘...
Recently, immigration and its socio-economic aspects have been in the centre of European Union leaders’ agenda. In this paper, we apply National Transfer Accounts (NTA) methodology to calculate complete set NTA results for immigrants natives five EU countries. We find that due lower labour income, which cannot be offset by consumption, experience a shorter independence period much aggregate lif...
With the advent of digital imaging technology, the options available in consumer imaging have increased. However, the relative environmental impacts of these different options are not clear cut. Assessment of the impacts of these options can help to provide feedback to decision makers and give insight that will help reduce environmental impact through product system design. In this paper, we pr...
reliability of a system is the probability that it will function as intended for the required period of time. the opposite of reliability is failure probability per unit time or over time, such as a life cycle. following a review of existing reliability codes and approaches, comprehensive approaches to assess the reliability of offshore structures are described, including probabilistic analysis...
Environmental issues require a new manufacturing paradigm because the current mass production and mass consumption paradigm inevitably cause them. We have already proposed a new manufacturing paradigm called the “Post Mass Production Paradigm ~PMPP!” that advocates sustainable production by decoupling economic growth from material and energy consumption. To realize PMPP, appropriate planning of...
In this paper, a forced circulation solar water heater system is simulated for different hot water consumption profiles using flat plate collectors as well as evacuated tube collectors. The profiles studied are the actual samples of hot water consumption profiles for different commercial centers and institutions. Dynamic simulation outputs of system thermal performance are used as economic anal...
cellular and molecular pathways link thrombosis and innate immune system during sepsis. extrinsic pathway activation of protease thrombin through fviia and tissue factor (tf) in sepsis help activate its endothelial cell (ec) membrane protease activated receptor 1 (par-1). thrombin adjusts the ec cycle through activation of g proteins (g12/13), and later through rho gefs (guanine nucleotide exch...
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