372 research outputs found

    Willingness to accept for rewilding farmland in environmentally sensitive areas

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    Rewilding farmland represents a good policy option to restore and conserve the environment in environmentally sensitive areas. This paper is the first to analyze farmers’ preferences for rewilding schemes, focusing on partial and complete passive rewilding schemes and using a novel methodological application of the contingent valuation method and an extensive Mediterranean agricultural system as a case study. The results show that farmers would only be willing to participate in rewilding schemes at very high payment levels (€833 and €1187/ha/year on average for partial and complete rewilding schemes, respectively). High heterogeneity of preferences is also evidenced, especially related to farm characteristics (yield) and management (use of environmentally friendly practices), farmer characteristics (perceived succession probability and farm income dependence), attitudes, and opinions (with regard to the scheme’s objective). Significant policy implications can be drawn from the results, including the need for targeting in rewilding programs, the suitability of complementing them with rural economy diversification actions, and the usefulness of environmental awareness campaigns among farmers

    Los molinos de los parientes mayores guipuzcoanos: el ejemplo de los Yarza en el siglo XV

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    Beasaingo Paperak ; 10. Recoge las ponencias presentadas en las jornadas "Molinos y energías renovables en Euskal Herria" (Beasain, 17-19 noviembre de 2000).Este trabajo forma parte de los resultados de un proyecto de investigación (UPV 156.130-HA064/97 y G.V. P1997/63) financiado por la Universidad del Pais Vasco y el Gobierno Vasco "De los Bandos a la Provincia: Transformaciones económicas, sociales y políticas y culturales en la Guipúzcoa de los siglos XIV a XVI". Reúne a un grupo de ocho investigadores de los Departamentos de Historia Medieval, Moderna y América, Historia e Instituciones Económicas y Filología Española de la de la Facultad de Filología, Geografia e Historia de la Universidad del País Vasco en Vitoria

    Factores asociados a la mortalidad en pacientes hospitalizados por COVID-19 en Perú. Una revisión sistemática

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    Introduction: The COVID-19 pandemic has spread globally, with Peru being one of the countries with the highest mortality in the world. Therefore, the aim of this study was to evaluate the factors associated with mortality in patients hospitalized for COVID-19 in Peru.Material y methodos: A systematic review of the literature was carried out using the databases PubMed, Scopus, Web of Science, Embase, the Virtual Health Library, Scielo, and Google Scholar until September 13, 2023. The main search terms used were "COVID-19", "mortality," and "Peru". Results: A total of 1876 articles were retrieved using the search strategy. After removing duplicates (n = 528) and screening by title, abstract, and full text, 27 observational studies were included that met the inclusion criteria, with a total sample of 10154 hospitalized patients with COVID-19. Of the total participants, 65.59% were male, with a mean age over 55 years. The studies were conducted in nine regions of Peru. The mortality rate of adult patients ranged from 6.8% to 71.83%. The most prevalent associated factors were advanced age, male sex, presenting comorbidities such as hypertension, diabetes, and obesity, laboratory markers such as lymphocytopenia, lactate dehydrogenase, C-reactive protein, D-dimer, total bilirubin, oxygen saturation below 80%, use of hydroxychloroquine, ivermectin, or azithromycin, and corticosteroids. Conclusions: Age, male sex, cardiovascular disease, lactate dehydrogenase, C-reactive protein, D-dimer, oxygen saturation below 80%, and ivermectin were the most prevalent factors associated with mortality in Peruvian patients hospitalized for COVID-19.Introducción: La pandemia de COVID-19 se ha propagado globalmente, siendo Perú uno de los países con mayor mortalidad en el mundo. Por lo tanto, este estudio tuvo como objetivo evaluar los factores asociados con la mortalidad en pacientes hospitalizados por COVID-19 en Perú. Material y métodos: Se realizó una revisión sistemática de la literatura utilizando las bases de datos PubMed, Scopus, Web of Science, Embase, la Biblioteca Virtual de Salud, Scielo y Google Académico hasta el 13 de septiembre de 2023. Los principales términos de búsqueda utilizados fueron "COVID-19", "Mortalidad" y "Perú". Resultados: Se Un total de 1876 artículos fueron recuperados utilizando la estrategia de búsqueda. Después de eliminar los duplicados (n = 528) y examinar por título, resumen y texto completo, se incluyeron 27 estudios observacionales que cumplieron con los criterios de inclusión con una muestra total de 10154 pacientes hospitalizados con COVID-19. Del total de participantes el 65,59% fueron hombres, con una media de edad mayor a 55 años. Los estudios se desarrollaron en 9 regiones del Perú. La mortalidad de los pacientes adultos comprendió entre 6,8% y 71,83%. Los factores asociados más prevalentes fueron la edad avanzada, sexo masculino, presentar comorbilidades como hipertensión, diabetes y obesidad, marcadores laboratoriales como el linfocitopenia, lactato deshidrogenasa, proteína C reactiva, dímero D, bilirrubina total, saturación de oxígeno inferior al 80%, uso de hidroxicloroquina, ivermectina o azitromicina, y corticosteroides. Conclusiones: La edad, sexo masculino, enfermedades cardiovasculares, lactato deshidrogenasa, proteína C reactiva, dímero D, saturación de oxígeno inferior al 80% y ivermectina fueron los factores asociados más prevalentes a la mortalidad en pacientes peruanos hospitalizados por COVID-19

    Spatial analysis of demand for sparsely-located ecosystem services using alternative index approaches

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    This study is focused on the effects of spatial discounting and substitute sites on the demand for ecosystem services (ES) provided by scattered agroecosystems. New ways of modelling these two effects are proposed, relying on area-based and density-based indexes. Data from discrete choice experiments are used, based on a case study of Andalusian olive groves (southern Spain). The results show that model fit is significantly improved by the introduction of these spatial indexes, with the best outcome found for the area-based index combined with the inverse of the distance. Results provide evidence of substantial spatial heterogeneity depending on the ES (carbon sequestration, soil conservation and biodiversity), indicating different economic jurisdiction

    Caracterización geomecánica del macizo rocoso en la ampliación del túnel exploratorio Karen Milagros, región Amazonas, 2016

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    RESUMEN El túnel exploratorio Karen Milagros corresponde a la parte SW del Proyecto Minero Cañón Florida de la empresa MILPO ANDINA PERU SAC, ubicado en el distrito de Shipasbamba, Provincia de Bongará y Departamento de Amazonas. Este Proyecto busca desarrollar la explotación de minerales metálicos a futuro mediante laboreo subterráneo, para lo cual se necesita conocer las condiciones geomecánicas del macizo rocoso presente. Esto ha llevado a desarrollar la tesis titulada “Caracterización Geomecánica del Macizo Rocoso en la Ampliación del Túnel Exploratorio Karen Milagros, Región Amazonas, 2016””, con el objetivo principal de realizar la evaluación geomecánica de los macizos rocosos presentes en en la zona de ampliación deltúnel exploratorio Karen Milagros, mediante el logueo y ensayos de carga puntual y peso específico en testigos de rocas de sondajes diamantinos, cuyos datos analizados estadísticamente, ayudaron a identificar los dominios geomecánicos, así como elaborar cuatro secciones geomecánicas claves NW y un plano geomecánicos del nivel 2370, en base al sistema de clasificación RMR (1989) (Rock Mass Rating). La primera fase comprendió la recopilación de información bibliográfica, posterior a ello se elaboró las secciones en base a 18 sondajes diamantinos de acuerdo al extensión de la zona de interés, los cuales fueron logueados y ensayados, obteniéndose así la data de los cinco parámetros geomecánicos para el cálculo del RMR (1989). Al final se pudo identificar tres Dominios Geomecánicos: Dominio Geomecánico I con macizos rocosos de Buena calidad, Dominio Geomecánico II con macizos rocosos de Regular calidad y Dominio Geomecánico III con Macizos rocosos de mala Calidad; siendo los dos primeros los más predominantes.ABSTRACT The exploratory tunnel Karen Milagros corresponds to the SW part of Florida Canyon Mining Project company MILPO ANDINA PERU SAC, located in the Shipasbamba District, Province of Bongará and Department of Amazonas. This project seeks to develop future exploitation of metallic minerals by underground tilling, for which you need to know the geomechanical conditions of the rock mass present. This has led to develop the thesis entitled "Characterization Geomechanics Rock Mass in the Extension Tunnel Exploratory Karen Milagros, Region Amazonas, 2016" ", with the main objective of making the geomechanical assessment of rock masses present in the area of enlargement deltúnel exploratory Karen Milagros, through logging and testing point load and weight in witnesses rocks diamond drilling, the data statistically analyzed, helped identify the geomechanical domains as well as develop four geomechanical sections key NW and geomechanical level plane 2370, based on RMR classification system (1989) (Rock Mass rating). The first phase involved the collection of bibliographic information, after this the sections were developed based on 18 diamond drilling according to the size of the area of interest, which were logged and tested, thus obtaining the data of the five geomechanical parameters RMR calculation (1989). In the end Geomechanical could identify three domains: Domain I Geomecánico with good quality rock masses, domain Geomecánico II with rock mass quality and Domain Regular Geomecánico III with sleazy rock masses; the first two being the most prevalent

    Diseño e implementación de un modelo de mantenimiento preventivo para la empresa Mono Block S.A

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    En este manual de mantenimiento se comenta como se implementó el plan de mantenimiento preventivo. Inicialmente se recolectó la información técnica de los equipos, esto incluye marcas, modelos, números de serie, ubicación, capacidad, características eléctricas de los mismos, etc. Luego se codificaron los equipos de acuerdo a las áreas y al tipo de equipo ( neumático, eléctrico, mecánico, hidráulico, etc. ). Se determinó la criticidad de los equipos de acuerdo a su uso e importancia dentro de la empresa, estableciéndose tres criterios básicos, a saber: No critico ( edificios y equipos de oficina ), Normal ( equipos que pueden causar una parada de planta, pero que cuentan con respaldo ) y Critico ( equipos que pueden poner en riesgo la seguridad de las personas o del producto así como causar una parada de planta ya que no tienen respaldo )

    Laparoscopy treatment of choledocal cyst including mucosectomy

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    El quiste de colédoco es una enfermedad poco frecuente de la vía biliar. Presentamos un caso de quiste de colédoco Todani I, tratado exitosamente por vía laparoscópica, incluyendo la reconstrucción con un asa desfuncionalizada, en Y de Roux. Además, se realizó una mucosectomía laparoscópica de la porción intrapancreática del quiste. La evolución del paciente fue muy satisfactoria. Se concluye que es factible el manejo laparoscópico del quiste de colédoco.Choledocal cyst is a rare anomaly of the biliary tract. We present a case of choledochal cyst type I (according to Todani’s classification) that was successfully excised by laparoscopy including hepaticojejunostomy. During the operation we performed distal mucosectomy of the intrapancreatic portion of the cyst. The patient had an uneventful recovery. We conclude that laparoscopic management of the choledochal cyst is feasible

    E-learning in "innovation, creativity and entrepreneurship": Exploring the new opportunities and challenges of technologies

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    [EN] Companies and society demand professionals be able to provide creative solutions with added value as well as to implement them in order to face the arising challenges in the increasingly dynamic environment. Although the transversal competence ¿Innovation, Creativity and Entrepreneurship¿ is essential for engineers that should find innovative solutions to problems, teachers find many difficulties when training and evaluating their students in the scope of the regular courses: large groups, very adjusted time to technical contents. In this context, the School of Industrial Engineering (ETSII) at Polytechnic University of Valencia (UPV) is aware of the opportunities offered by new information and communication technologies to support teachers in this task while enhancing students¿ generic outcomes. For this reason, an e-learning platform has been created on this competence, that offers valuable resources to students to implement this competence throughout the assigned course tasks, and supports teachers prompted to train and evaluate this transversal competence. With this platform, the authors aim to contribute to the still neglected educational aspect of entrepreneurship and address for the first time in an e-learning system its relationship with innovation and creativity.The authors acknowledge the financial support partly from the ETSII of UPV and partly from the Universitat Politècnica de València through the Coordinación metodológica a través de webs de apoyo en las titulaciones de la ETSII para las Competencias Transversales PIME/19-20 Ref.150, Ref.151 and Ref.152 projects.Alemany Díaz, MDM.; Vallés Lluch, A.; Villanueva López, JF.; García-Serra García, J. (2021). E-learning in "innovation, creativity and entrepreneurship": Exploring the new opportunities and challenges of technologies. Journal of Small Business Strategy (Online). 31(1):39-50. http://hdl.handle.net/10251/189826395031

    Development of olive stone quality system based on biofuel study parameter study

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    In Andalusia (Southern Spanish region), olive industry presents a high potential of solid biofuel production because of residues generated from olive groves and those by olive oil industries. In this region, 25 % of residual biomass is produced by olive sector and olive stone residues are among the most important since its production is over 450,000 tons/year. The objective of this research is to provide unambiguous and clear classification principles for olive stone residues based on their quality parameters, to serve as a tool to enable efficient trading of this biofuel and to achieve good understanding between seller and customer as well as to facilitate communication with equipment manufacturers. For this purpose, a total of 176 olive stone samples from 71 different places have been collected and analyzed in this research. Data obtained have been used to develop two quality systems. On the one hand, a classification of olive stone quality parameters has been developed and data are described in a similar way to standardized european quality label for wood pellets. On the other hand, a procedure to calculate a quality index has been designed. Both quality systems have obtained similar results. However, the first one has shown to be more strict. In conclusion, both of them could be used in order to provide a quality classification for olive stone residues
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