517 research outputs found

    Dioniso The Perfect Experience

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    El presente trabajo tiene como objetivo estudiar la viabilidad del proyecto Dioniso, el cual consiste en brindar una experiencia completa a las mujeres en su despedida de soltera. La experiencia completa consta de diversas estaciones, la primera una sala de Manicure&Pedicure, seguido de un SPA, posteriormente un show en vivo de bartender y para finalizar un show en vivo de Strippers.The objective of this study is to study the viability of the Dioniso project, which consists in providing a complete experience to the women in their bachelorette party. The complete experience consists of several stations, the first a Manicure & Pedicure room, followed by a SPA, later a live bartender show and to finalize a live show of Strippers.Universidad del Rosari

    Infiltration Measurements for Soil Hydraulic Characterization

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    This book summarises the main results of many contributions from researchers worldwide who have used the water infiltration process to characterize soil in the field. Determining soil hydrodynamic properties is essential to interpret and simulate the hydrological processes of economic and environmental interest. This book can be used as a guide to soil hydraulic characterization and in addition it gives a complete description of the treated techniques, including an outline of the most significant research results, with the main points that still needing development and improvement

    Analysis of the Role of Tortuosity and Infiltration Constants in the Beerkan Method

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    It has recently been proposed to couple the Beerkan method with the Beerkan Estimation of Soil Transfer parameters (BEST) algorithm to facilitate the estima- tion of soil hydraulic parameters from an infiltration experiment. Although this simplified field procedure is relatively rapid and inexpensive, it has been doubt - ed if the Beerkan method can represent a valid and reliable alternative to other conventional methods. This study explored the impact of the tortuosity param- eter (p) and two infiltration constants included in the BEST algorithm using a sensitivity analysis applied to three experimental soils. The analysis that was validated using the numerical model HYDRUS 2D/3D indicates that the tortuosity is relatively insignificant compared to parameters b and g that have a large impact on the estimation procedure

    Analysis of antenal sensilla patterns of Rhodnius prolixus from Colombia and Venezuela

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    Antennal sensilla patterns were used to analyze population variation of domestic Rhodnius prolixus from six departments and states representing three biogeographical regions of Colombia and Venezuela. Discriminant analysis of the patterns of mechanoreceptors and of three types of chemoreceptors on the pedicel and flagellar segments showed clear differentiation between R. prolixus populations east and west of the Andean Cordillera. The distribution of thick and thin-walled trichoids on the second flagellar segment also showed correlation with latitude, but this was not seen in the patterns of other sensilla. The results of the sensilla patterns appear to be reflecting biogeographic features or population isolation rather than characters associated with different habitats and lend support to the idea that domestic R. prolixus originated in the eastern region of the Andes.Fil: Esteban, Lyda. Universidad Industrial de Santander; ColombiaFil: Angulo, Víctor Manuel. Universidad Industrial de Santander; ColombiaFil: Dora Feliciangeli, M.. Universidad de Carabobo; VenezuelaFil: Catala, Silvia Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Secretaría de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentin

    Impact of land use on the hydraulic properties of the topsoil in a small French catchment

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    The hydraulic properties of the topsoil control the partition of rainfall into infiltration and runoff at the soil surface. They must be characterized for distributed hydrological modelling. This study presents the results of a field campaign documenting topsoil hydraulic properties in a small French suburban catchment (7 km2) located near Lyon, France. Two types of infiltration tests were performed: single ring infiltration tests under positive head and tension disk infiltration using a mini-disk. Both categories were processed using the BEST Beerkan Estimation of Soil Transfer parameters- method to derive parameters describing the retention and hydraulic conductivity curves. Dry bulk density and particle size data were also sampled. Almost all the topsoils were found to belong to the sandy loam soil class. No significant differences in hydraulic properties were found in terms of pedologic units, but the results showed a high impact of land use on these properties. The lowest dry bulk density values were obtained in forested soils with the highest organic matter content. Permanent pasture soils showed intermediate values, whereas the highest values were encountered in cultivated lands. For saturated hydraulic conductivity, the highest values were found in broad leaved forests and small woods. The complementary use of tension disk and positive head infiltration tests highlighted a sharp increase of hydraulic conductivity between near saturation and saturated conditions, attributed to macroporosity effect. The ratio of median saturated hydraulic conductivity to median hydraulic conductivity at a pressure of -20 mm of water, was about 50. The study suggests that soil texture, such as used in most pedo-transfer functions, might not be sufficient to properly map the variability of soil hydraulic properties. Land use information should be considered in the parameterizations of topsoil within hydrological models to better represent in situ conditions, as illustrated in the paper

    Diseño de un plan de mejoras para una hacienda bananera, que ayude a minimizar los accidentes laborales en los trabajadores de un empresa cuya actividad económica es la exportación de banano, ubicada en el cantón Buena Fé, Provincia de Los Ríos.

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    Este documento contiene archivo en PDF.En las haciendas del Ecuador, que se dedican a la actividad bananera, se ha evidenciado la aparición de problemas de salud, sociales y económicos debido a la falta de un plan de prevención que minimice los accidentes laborales en la planta. En el presente estudio se analiza los accidentes de trabajo y las actividades laborales que son más propensas a cada accidente, además se estudia de qué forma afectan estos accidentes en el aspecto social, es decir no solo repercute al trabajador quien es el principal afectado, sino también a su familia y de forma económica a las haciendas y al mismo país. Para el desarrollo de este estudio se tomó el método histórico y cuantitativo que ayudaron a estructurar los resultados en cuadros y gráficos estadísticos, utilizando las matemáticas y las estadísticas como ciencia de apoyo, y gracias a la técnica de las encuestas a los trabajadores de la hacienda y las visitas de campo se pudo obtener información más real del problema tomando fotos y apuntes de los problemas que se estudia. Concluyendo así que a la hacienda le hace falta diseñar un programa de salud ocupacional que minimice los accidentes en las plantaciones. Se recomienda buscar el bienestar común de los empleadores y empleados mediante la elaboración de un plan de mejoras, que sirva para minimizar las condiciones inseguras y riesgosas del trabajador y a mejorar los estándares de calidad en la producción bananera de las empresas que se dedican a esta actividad.In farmers of Ecuador, where they are dedicated to banana production, they have shown the occurrence of health, social and economic problems due to the lack of a prevention plan that minimize the accidents at work place. This research study aims to analyze work accidents and the activities that are more prone to those accidents. Also it studies how the accidents affect in social way, it means that not only injures the person who works in the farmer, but his family too. And how it affects to economical way on the worker, the farmer and also the country. To develop this study the historical and quantitative method that helped structure results in statistical tables and charts, using mathematics and statistics as science support and thanks to technical surveys of estate workers took and field visits could be more real information problem taking photos and notes of the problems being studied. Thus concluding the estate lacks design an occupational health program to minimize accidents on the plantations. In this regard arises the following study in a program of prevention and reduction of risks in the farmer worker, with the aim of reducing the accident rate in the company, not creating an economic and social impact for the company and the workers and their families and improve the quality standards in production and sale of bananas

    Incidencia del Aumento de la Demanda en la Calidad del Servicio al Cliente de las Pyme

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    En este estudio se encuentran una serie de aportes empíricos que, basados en un enfoqueinvestigativo descriptivo, contribuyen al conocimiento sobre el cómo las, pequeñas y medianasempresas (PyME) enfrentan su preocupación por mantener la calidad del servicio al cliente,sobre todo, cuando tiende a existir una mayor presión de la demanda por el producto ofrecido.Para poder responder esa pregunta, se tomó como laboratorio de investigación a las PyME delsector de restaurantes localizados en el norte de la ciudad de Quito, de donde se obtuvierony analizaron una serie de datos cualitativos y cuantitativos a través de la realización deentrevistas a informantes calificados y de la aplicación de encuestas a un grupo de empresas.Uno de los resultados clave de esta investigación es que los modelos de gestión orientadosal mantenimiento de la calidad del servicio -en circunstancias de mayor demanda- carecende estrategias debidamente estructuradas y planificadas, a pesar de que las PyME del sectorexpresan, de forma abierta, centrar sus esfuerzos hacia la consecución del objetivo primordialde una empresa de servicios alimenticios relacionado a la búsqueda de la satisfacción delcliente

    Transferts d'eau et de soluté en milieu non saturé hétérogène à l'échelle d'un pilote de laboratoire (expériences et modélisations)

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    L hétérogénéité de la zone non saturée joue un rôle important dans le transfert d eau et de soluté car elle accentue à la fois le développement des zones de stockage temporelles et les écoulements préférentiels. Par conséquent, la validation des modèles prédictifs nécessite le développement des outils expérimentaux spécifiques afin d observer et de quantifier les mécanismes de transport impliqués dans un système non saturé hétérogène. Cette thèse vise à étudier l effet combiné de la vitesse d infiltration, de la barrière capillaire et l angle de la pente d interface entre deux matériaux sur les processus de l écoulement de l eau et du transport de soluté dans un modèle physique, le lysimètre de laboratoire 1x1x1.6 m3, nommé LUGH (Lysimeter for Urban Groundwater Hydrology) et un modèle numérique 3D de ce lysimètre. Le lysimètre LUGH est rempli par un sable fin et un mélange bimodal (50 % sable fin et 50 % gravier) en deux configurations: un profil uniforme de matériau bimodal ou un profil avec deux couches avec une pente de 14o. Ces agencements figurent l hétérogénéité structurale et texturale observée sur un des sites expérimentaux de l OTHU (Observatoire de Terrain en Hydrologie Urbaine) : le bassin d infiltration d eaux pluviales Django Reinhardt géré par la ville de Lyon (France). Le lysimètre est alimenté en eau et avec un traceur inerte (bromure de potassium, KBr) sur une partie de la surface par un système d arrosage automatique. Les effluents ont été recueillis dans quinze sorties différentes en bas du lysimètre. La forte hétérogénéité des flux des sorties et des courbes de percée souligne la mise en place des écoulements préférentiels résultant à la fois de l effet de barrière capillaire et de l effet de fond du lysimètre. A partir des résultats expérimentaux, la modélisation numérique à l aide de logiciel COMSOL MultiphysicsTM a permis de mieux comprendre les mécanismes responsables de ces transferts hétérogènes. Lorsque le modèle numérique validé, un test de sensibilité a été conduit pour étudier les effets de la vitesse d infiltration et de la pente de l interface sur l écoulement. Les résultats montrent que la diminution de la vitesse d infiltration ou l augmentation de la pente de l interface favorisent le développement des écoulements préférentiels. Notre étude a donné également des renseignements pertinents sur le couplage entre les processus hydrodynamiques et le transfert des solutés dans les sols non saturés hétérogènes en soulignant le rôle de la géométrie des interfaces ainsi que celui des conditions aux limites comme des facteurs clés pour la quantification des écoulements préférentiels.The heterogeneity of the unsaturated zone plays an important role in the water and solutes transfer as it accentuates both the development of stagnant zones for water and preferential flow. Therefore, the validation of predictive models requires the development of specific experimental tools to observe and quantify the transport mechanisms involved in a heterogeneous unsaturated system. The aim of this thesis is to describe the combined effect of infiltration, capillary barrier and sloping layered soil on both flow and solute transport processes in a large physical model (1x1x1.6 m3) called LUGH (Lysimeter for Urban Groundwater Hydrology) and a 3D numerical flow model. Sand and a soil composed of a bimodal sand-gravel mixture were placed in the lysimeter represent one of the commun structural and textural elements of the heterogeneity observed in the vadose zone under an infiltration basin of Lyon (France). The soil was compacted in two configurations: a uniform profile and a profile with two layers having a slope of 14. Water and an inert tracer (KBr) were injected from the top of the lysimeter using a specific water sprinkler system and collected at 15 different outlets at the bottom. The 15 breakthrough curves obtained presented high heterogeneity, emphasising the establishment of a preferential flow resulting from both capillary barrier and soil layer dip effects. Numerical modelling led to better understanding of the mechanisms responsible for these heterogeneous transfers and it was also used to perform a sensitivity analysis of the effects of water velocity (water and solute flux fed by the sprinkler) and the slope interface. The results show that decreasing velocity and increasing the slope of the interface can lead to the development of preferential flows. In addition, the offset of the centre of gravity of the flow distribution at the output increases linearly as a function of the slope angle of the layered soil. This paper allows coupling the hydrodynamic approach with the transfer of pollutants in unsaturated heterogeneous soil and highlighting preferential flow by flow modeling.VILLEURBANNE-DOC'INSA-Bib. elec. (692669901) / SudocSudocFranceF
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