Asensio Cuesta, S.; Diego-Mas, JA.; Cremades Oliver, L.; González-Cruz, M. (2012). A method to design job rotation schedules to prevent work-related musculoskeletal disorders in repetitive work. Job rotation is an organizational strategy widely used in human-based production lines with the aim of preventing Work-related Musculoskeletal Disorders (WMSDs). These work environments are characterized by the presence of a high repetition of movements, which is a major risk factor associated with WMSDs.This article presents a genetic algorithm to obtain rotation schedules aimed at preventing WMSDs in such environments. To do this, it combines the effectiveness of genetic algorithms optimization with the ability to evaluate the presence of risk by repeated movements by following the OCRA ergonomic assessment method. The proposed algorithm can design solutions in which workers will switch jobs with high repeatability of movements with other less demanding jobs that support their recovery. In addition, these solutions are able to diversify the tasks performed by workers during the day, consider their disabilities and comply with restrictions arising from the work organisation.

Abstract:Purpose: On pursue of economic revenue, the second life of electric vehicle batteries is closer to reality. Common electric vehicles reach the end of life when their batteries loss between a 20 or 30% of its capacity. However, battery technology is evolving fast and the next generation of electric vehicles will have between 300 and 400 km range. This study analyzes different End of Life scenarios according to battery capacity and their possible second life's opportunities.Additionally, an analysis of the electric vehicle market, EV manufacturers and environmental impact defines a possible location for battery repurposing or remanufacturing plants.Design/methodology/approach: Using the center of mass equation taking 3 parameters: electric vehicle market, manufacturers and environmental impact this study suggests a location to settle a battery repurposing plant from a logistic and environmental perspective. This paper presents several possible applications and remanufacture processes of EV batteries according to the state of health after their collection, analyzing both the direct reuse of the battery and the module dismantling strategy. Findings:The study presents that Germany seems a good location to build a battery repurposing plant because of its closeness to EV manufacturers and the potential European EV markets, observing a strong relation between the EV market share and the income per capita.9% of the batteries may be send back to an EV as reposition battery, 70% will be prepared for stationary or high capacity installations such as grid services, residential use, Hybrid trucks or -266-Journal of Industrial Engineering and Management -https://doi.org/10.3926/jiem.2009 electric boats. Finally, the remaining 20% is to be dismantled into modules or cells for smaller applications, such as bicycles or assisting robots.Originality/value: Most of studies related to the EV battery reuse take for granted that they will all have an 80% of its capacity. This study analyzes and proposes a distribution of battery reception and presents different 2 nd life alternatives according to their state of health.

A B S T R A C TAn innovative proposal of tangento-axial filtration based on the concept of macromembrane (large size) is presented in the context of micro-and ultrafiltration ceramic membranes. The macromembrane is made of Al 2 O 3 -TiO 2 by slip casting. It includes an internal system for rotating the fluid trough a propeller which enhances the tangento-axial filtration. This filtration yields better than the cross-flow filtration in conventional extruded ceramic tubes of small diameter. The reasons are, first, its larger sizes relative to the extruded tubular filters, and second, that it can work at higher pressures, resulting in better operational performance. Furthermore, costs of industrial-scale production could be lower. In this study, the conceptual basis, pilot plant, first experimental results, and proposals for improvement of the system to continue the project are presented.

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