58 research outputs found

    La variación geográfica en las series de televisión en catalán. Dos conceptos nuevos: variación autodiatópica y variación alterdiatópica

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    L’article aborda el propòsit del col·loquial mediatitzat en relació amb la variació geogràfica (o diatòpica) dels personatges de les sèries de televisió de producció pròpia. Les tendències observades permeten distingir dos conceptes nous: variació autodiatòpica i variació alterdiatòpica. Aquests dos tipus de variació estan al servei de la versemblança audiovisual, que és justament el propòsit del registre col·loquial mediatitzat de les sèries de televisió.  Per a l’observació i l’anàlisi d’aquestes tendències lligades a la variació geogràfica  s’ha tingut en compte un corpus format per 80 capítols d’un total de 20 sèries de producció pròpia de TV3, d’IB3 i de Canal 9.This article discusses the purpose of the mediatedcolloquial register in relation to the geographic (or diatopic)variation of characters in nationally-producedtelevision series. The trends observed enable us todistinguish two new concepts: autodiatopic variationand alterdiatopic variation. These two types of variationare at the service of audiovisual credibility, whichis precisely the purpose the mediated colloquial registerin television series.The observation and analysis of these trends linkedto geographic (or diatopic) variation took into accounta corpus formed by 80 episodes from a total of 20national television series produced by TV3, IB3 andChannel 9.El artículo aborda el propósito del registro coloquialmediatizado en relación con la variación geográfica(o diatópica) de los personajes de las series de televisiónde producción propia. Las tendencias observadaspermiten distinguir dos conceptos nuevos:variación autodiatópica y variación alterdiatópica.Estos dos tipos de variación están al servicio de laverosimilitud audiovisual, que es precisamente el propósitodel registro coloquial mediatizado de las seriesde televisión.Para la observación y análisis de estas tendencias ligadasa la variación geográfica (o diatópica), se hatenido en cuenta un corpus formado por 80 capítulosde un total de 20 series de producción propia de TV3, de IB3 y de Canal 9

    Green value stream mapping approach to improving productivity and environmental performance

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    [EN] Purpose The purpose of this paper is to introduce a new methodology called overall greenness performance for value stream mapping (OGP-VSM). Using value-added concepts, this approach has the potential to integrate, measure, control and improve productive and environmental performance in accordance with a company¿s context. Design/methodology/approach The OGP-VSM approach was developed by reviewing and integrating the environmental aspects of existing lean thinking tools and approaches. Findings This research revealed the lack of practical integration between productive and environmental performance. Using OGP-VSM, managers can see that environmental practices have a direct impact on productivity. OGP-VSM allows a balance to be found between lean and green practices in order to achieve the simultaneous improvement of productivity and environmental performance. Practical implications The proposed approach is applied to a case study in an automotive company in Spain and lays the groundwork for moving toward functional environmental sustainability in manufacturers. Originality/value Companies are increasingly implementing environmentally focused practices. Pursuing environmentally friendly (green) performance poses several challenges, but it also affords opportunities to create new methodologies for generating a competitive advantage for manufacturing companies. There are a limited number of approaches to drawing together the elements and attributes that are essential for a holistic, practical and long-lasting improvement of environmental performance in the manufacturing sectorThe work presented in this paper was carried out within the framework of the LIFE MCUBO research project funded by the European Union (LIFE15 ENV/ES/000379), through the LIFE programme. In addition, the authors would like to acknowledge the support received from AdP, the Special Patrimonial Fund at Universidad de La Sabana and the doctoral grant from TECNUN Escuela de Ingenieros, Universidad de Navarra.Muñoz-Villamizar, A.; Santos, J.; García Sabater, JJ.; Lleo, A.; Grau, P. (2019). Green value stream mapping approach to improving productivity and environmental performance. International Journal of Productivity and Performance Management. 68(3):608-625. https://doi.org/10.1108/IJPPM-06-2018-0216S608625683Diaz-Elsayed, N., Jondral, A., Greinacher, S., Dornfeld, D., & Lanza, G. (2013). Assessment of lean and green strategies by simulation of manufacturing systems in discrete production environments. CIRP Annals, 62(1), 475-478. doi:10.1016/j.cirp.2013.03.066Maroto-Sánchez, A. (2012). Productivity in the services sector: conventional and current explanations. The Service Industries Journal, 32(5), 719-746. doi:10.1080/02642069.2010.531266Mason, R., Nieuwenhuis, P., & Simons, D. (2008). Lean and green supply chain mapping: adapting a lean management tool to the needs of industrial ecology. Progress in Industrial Ecology, An International Journal, 5(4), 302. doi:10.1504/pie.2008.021921Molina-Azorín, J. F., Tarí, J. J., Claver-Cortés, E., & López-Gamero, M. D. (2009). Quality management, environmental management and firm performance: A review of empirical studies and issues of integration. International Journal of Management Reviews, 11(2), 197-222. doi:10.1111/j.1468-2370.2008.00238.xMolina‐Azorín, J. F., Claver‐Cortés, E., López‐Gamero, M. D., & Tarí, J. J. (2009). Green management and financial performance: a literature review. Management Decision, 47(7), 1080-1100. doi:10.1108/00251740910978313Montabon, F., Sroufe, R., & Narasimhan, R. (2006). An examination of corporate reporting, environmental management practices and firm performance. Journal of Operations Management, 25(5), 998-1014. doi:10.1016/j.jom.2006.10.003Morioka, S. N., & de Carvalho, M. M. (2016). A systematic literature review towards a conceptual framework for integrating sustainability performance into business. Journal of Cleaner Production, 136, 134-146. doi:10.1016/j.jclepro.2016.01.104Muñoz-Villamizar, A., Santos, J., Viles, E., & Ormazábal, M. (2018). Manufacturing and environmental practices in the Spanish context. Journal of Cleaner Production, 178, 268-275. doi:10.1016/j.jclepro.2018.01.026Netland, T. H., Schloetzer, J. D., & Ferdows, K. (2015). Implementing corporate lean programs: The effect of management control practices. Journal of Operations Management, 36(1), 90-102. doi:10.1016/j.jom.2015.03.005Ng, R., Low, J. S. C., & Song, B. (2015). Integrating and implementing Lean and Green practices based on proposition of Carbon-Value Efficiency metric. Journal of Cleaner Production, 95, 242-255. doi:10.1016/j.jclepro.2015.02.043(2001). Measuring Productivity - OECD Manual. doi:10.1787/9789264194519-enOrmazabal, M., Viles, E., Santos, J., & Jaca, C. (2018). An overview of environmental management in the Spanish food sector: a survey study. Management of Environmental Quality: An International Journal, 29(1), 49-62. doi:10.1108/meq-10-2016-0072Sunder M., V., Ganesh, L. S., & Marathe, R. R. (2018). A morphological analysis of research literature on Lean Six Sigma for services. International Journal of Operations & Production Management, 38(1), 149-182. doi:10.1108/ijopm-05-2016-0273Thanki, S. J., & Thakkar, J. J. (2016). Value–value load diagram: a graphical tool for lean–green performance assessment. Production Planning & Control, 27(15), 1280-1297. doi:10.1080/09537287.2016.1220647Tilina, D. I., Zapciu, M., & Bendic, V. (2014). The Link between Lean and Green Manufacturing - A Way to Reach Sustainable Development. Applied Mechanics and Materials, 656, 534-541. doi:10.4028/www.scientific.net/amm.656.534US EPA (2007), “The lean and environment toolkit”, available at: www.epa.gov/lean/lean-environment-toolkit (accessed January 24, 2018).US EPA (2011), “The lean and water toolkit”, available at: www.epa.gov/lean/lean-water-toolkit (accessed January 24, 2018)

    Does cattle and sheep grazing under best management significantly elevate sediment losses? Evidence from the North Wyke Farm Platform, UK

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    Purpose Intensive livestock grazing has been associated with an increased risk of soil erosion and concomitant negative impacts on the ecological status of watercourses. Whilst various mitigation options are promoted for reducing livestock impacts, there is a paucity of data on the relationship between stocking rates and quantified sediment losses. This evidence gap means there is uncertainty regarding the cost-benefit of policy preferred best management. Methods Sediment yields from 15 hydrologically isolated field scale catchments on a heavily instrumented ruminant livestock farm in the south west UK were investigated over similar to 26 months spread across 6 years. Sediment yields were compared to cattle and sheep stocking rates on long-term, winter (November-April), and monthly timescales. The impacts of livestock on soil vegetation cover and bulk density were also examined. Cattle were tracked using GPS collars to determine how grazing related to soil damage. Results No observable impact of livestock stocking rates of 0.15-1.00 UK livestock units (LU) ha(-1) for sheep, and 0-0.77 LU ha(-1) for cattle on sediment yields was observed at any of the three timescales. Cattle preferentially spent time close to specific fences where soils were visually damaged. However, there was no indication that livestock have a significant effect on soil bulk density on a field scale

    Lean-green improvement opportunities for sustainable manufacturing using water telemetry in agri-food industry.

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    Water has become a critical resource due to increased manufacturing activities. However, there is a lack of detailed information on water management and consumption by industries. In the recent bibliography, lean–green was established as a good approach for achieving sustainability in manufacturing industries, but few studies have aimed to achieve both operational and environmental improvements in water consumption. In this paper, we present a multi-case study in the agri-food industry in which water consumption in company activities is monitored, allowing them to improve their industrial processes based on lean–green practices, leading to a zero-waste strategy for this critical resource. The aim of this paper is to demonstrate the importance of having detailed knowledge regarding water consumption in order to discover, in a lean–green context, new improvement opportunities which could remain hidden by the current way of analysing consumption

    Determination of stress-induced degradation products of cetirizine dihydrochloride by a stability-indicating RP-HPLC method

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    A new, simple and accurate stability-indicating reverse phase high performance liquid chromatography method was developed and validated during the early stage of drug development of an oral lyophilizate dosage form of cetirizine dihydrochloride. For RP-HPLC analysis it was used an Eclipse XDB C8 column 150 mm × 4.6 mm, 5 μm (Agilent columns, Barcelona, Spain) as the stationary phase with a mobile phase consisted of a mixture of 0.2 M K2HPO4 pH 7.00 and acetonitrile (65:35, v/v) at a flow rate of 1 mL min −1. Detection was performed at 230 nm using diode array detector. The method was validated in accordance with ICH guidelines with respect to linearity, accuracy, precision, specificity, limit of detection and quantification. The method results in excellent separation between the drug substance and its stress-induced degradation products. The peak purity factor is >950 for the drug substance after all types of stress, which confirms the complete separation of the drug substance peak from its stress induced degradation products. Regression analysis showed r2 > 0.999 for cetirizine dihydrochloride in the concentration range of 650 μg mL −1 to 350 μg mL−1 for drug substance assay and a r2 > 0.999 in the concentration range of 0.25 μg mL−1 to 5 μg mL−1 for degradation products. The method presents a limit of detection of 0.056 μg mL −1 and a limit of quantification of 0.25 μg mL−1. The obtained results for precision and accuracy for drug substance and degradation products are within the specifications established for the validation of the method. The proposed stability-indicating method developed in the early phase of drug development proved to be a simple, sensitive, accurate, precise, reproducible and therefore useful for the following stages of the cetirizine dihydrochloride oral lyophilizate dosage form development

    Quantitative assessment of energy and resource recovery in wastewater treatment plants based on plant-wide simulations.

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    The growing development of technologies and processes for resource treatment and recovery is offering endless possibilities for creating new plant-wide configurations or modifying existing ones. However, the configurations’ complexity, the interrelation between technologies and the influent characteristics turn decision-making into a complex or unobvious process. In this frame, the Plant-Wide Modelling (PWM) library presented in this paper allows a thorough, comprehensive and refined analysis of different plant configurations that are basic aspects in decision-making from an energy and resource recovery perspective. In order to demonstrate the potential of the library and the need to run simulation analyses, this paper carries out a comparative analysis of WWTPs, from a techno-economic point of view. The selected layouts were (1) a conventional WWTP based on a modified version of the Benchmark Simulation Model No. 2, (2) an upgraded or retrofitted WWTP, and (3) a new Wastewater Resource Recovery Facilities (WRRF) concept denominated as C/N/P decoupling WWTP. The study was based on a preliminary analysis of the organic matter and nutrient energy use and recovery options, a comprehensive mass and energy flux distribution analysis in each configuration in order to compare and identify areas for improvement, and a cost analysis of each plant for different influent COD/TN/TP ratios. Analysing the plants from a standpoint of resources and energy utilization, a low utilization of the energy content of the components could be observed in all configurations. In the conventional plant, the COD used to produce biogas was around 29%, the upgraded plant was around 36%, and 34% in the C/N/P decoupling WWTP. With regard to the self-sufficiency of plants, achieving self-sufficiency was not possible in the conventional plant, in the upgraded plant it depended on the influent C/N ratio, and in the C/N/P decoupling WWTP layout self-sufficiency was feasible for almost all influents, especially at high COD concentrations. The plant layouts proposed in this paper are just a sample of the possibilities offered by current technologies. Even so, the library presented here is generic and can be used to construct any other plant layout, provided that a model is available

    Aerobiología y alergias respiratorias de Tenerife

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    Esta publicación resume los resultados obtenidos en casi cinco años del proyecto de "Impacto de las intrusiones atmosféricas africanas en la calidad del aire en Canarias y de la Península Ibérica" (2004-2009), entre los que cabe destacar una caracterización completa de los pólenes y esporas de hongos muestreados en el aire de Santa Cruz de Tenerife, la elaboración de predicciones semanales de pólenes y esporas de hongos, así como la obtención de un calendario polínico de utilidad para aquellos profesionales de la medicina que trabajan en alergias y afecciones respiratorias, y para los ciudadanos de Santa Cruz de Tenerife y visitantes que sean alérgicos al polen

    Novel WS2-based nanofluids for concentrating solar power: performance characterization and molecular-level insights

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    Nano-colloidal suspensions of nanomaterials in a fluid, nanofluids, are appealing because of their interesting properties related to heat transfer processes. Whilst nanomaterials based on transition metal chalcogenides (TMCs) have been widely studied in catalysis, sensing, and energy storage applications, there are few studies of nanofluids based on TMCs for heat transfer applications. In this study, the preparation and analysis of nanofluids based on 2D-WS2 in a typical heat transfer fluid (HTF) used in concentrating solar power (CSP) plants is reported. Nanofluids prepared using an exfoliation process exhibited well-defined nanosheets and were highly stable. The nanofluids were characterized in terms of properties related to their application in CSP. The presence of WS2 nanosheets did not modify significantly the surface tension, the viscosity, or the isobaric specific heat, but the thermal conductivity was improved by up to 30%. The Ur factor, which characterizes the thermal efficiency of the fluid in the solar collector, shows an enhancement of up to 22% in the nanofluid, demonstrating great promise for CSP applications. The Reynolds number and friction factor of the fluid were not significantly modified by the addition of the nanomaterial to the HTF, which is also positive for practical applications in CSP plants. Ab initio molecular dynamics simulations of the nanoparticle/fluid interface showed an irreversible dissociative adsorption of diphenyl oxide molecules on the WS2 edge, with very low kinetic barrier. The resulting ‘decoration’ of the WS2 edge dramatically affects the nature of the interface interactions and is therefore expected to affect significantly the rheological and transport properties of the nanofluids
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