5,672 research outputs found

    La incontinencia urinaria

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    Urinary incontinence, understood as any involuntary loss of urine, constitutes an important medical and social problem. It can be classified as stress urinary incontinence, urgent urinary incontinence or mixed urinary incontinence. The proportions of these three types of urinary incontinence are difficult to establish and vary notably between sources, but they might be about 40, 33 and 20% respectively. Its diagnosis requires a correct clinical history and physical exploration, together with some complementary explorations. The first therapeutic step consists of hygienicdietary measures and behaviour modification techniques. Pharmacological treatment is specific for each type of urinary incontinence, using anticholinergics and inhibitors of serotonin reuptake. Finally, different surgical techniques have a role in cases where conservative treatments fail or when dealing with severe urinary incontinence

    Finanzas^aAnálisis financiero aplicado a la empresa ADA,S.A. durante el periodo comparativo 2013-2014

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    El presente trabajo de seminario profundizara en estudios, en inversiones, y finanzas corporativas que son actividades que investigan la obtención del capital necesario para la toma de decisiones en transacciones y administración; para esto se estarán revisando los Estados Financieros los cuales son informes calificados de presentación de las actividades comerciales de una empresa. Para analizar los estados financieros se necesitan razones financieras las cuales son eficientes herramientas de análisis en una empresa, pero estas a su vez tienen serias limitaciones es por eso que se necesitan de otros métodos analíticos y comparativos como son: análisis estático o vertical que se utiliza para comparar qué porcentaje representan las cuentas más importantes del activo, pasivo y del estado de pérdidas y ganancias con relación a sus respectivos totales; y el análisis horizontal o dinámico que consiste en comparar estados financieros homogéneos en dos o más periodos consecutivos, para determinar los aumentos y disminuciones o variaciones de las cuentas de un periodo a otro. Estas herramientas financieras arrojaron resultados que alcanzaron ver la situación en que la empresa ha operado y mostrar cómo se encuentra financieramente en los periodos 2013 y 2014 a la empresa ADA S.A, la cual la metodología consistió en analizar la situación financiera de esta entidad comercial. Al realizar este estudio utilizamos fuentes muy importantes de información, tomando como base teórica el libro “Principios de Administración” de Lawrence J. Gitman, para comprobar lo esencial que tienen las finanzas en la economía de las organizaciones

    Brane with variable tension as a possible solution to the problem of the late cosmic acceleration

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    Braneworld models have been proposed as a possible solution to the problem of the accelerated expansion of the Universe. The idea is to dispense the dark energy (DE) and drive the late-time cosmic acceleration with a five-dimensional geometry. Here, we investigate a brane model with variable brane tension as a function of redshift called chrono-brane. We propose the polynomial λ=(1+z)n\lambda=(1+z)^{n} function inspired in tracker-scalar-field potentials. To constrain the nn exponent we use the latest observational Hubble data from cosmic chronometers, Type Ia Supernovae from the full JLA sample, baryon acoustic oscillations and the posterior distance from the cosmic microwave background of Planck 2015 measurements. A joint analysis of these data estimates n6.19n\simeq6.19 which generates a DE-like or cosmological-constant-like term, in the Friedmann equation arising from the extra dimensions. This model is consistent with these data and can drive the Universe to an accelerated phase at late times.Comment: 7 pages, 6 figures, accepted for publication in Phys. Rev. D (Rapid Communication

    Information System for Supporting Location-based Routing Protocols

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    This article presents an information system for location-based routing protocols that does not compromise the privacy of the involved nodes. This information system provides a representational model of the most frequented locations of a node, this most frequented zone is called its habitat, and a protocol to compare these habitats among nodes given a target location of interest. Then, the protocol can determine which of the neighbors of a node is nearer or farther from this target location and provides this information to the underlying routing protocol. As it is designed for DTNs, the protocol does not require a trusted third party, instead, it implements a secure multi-party computation based on homomorphic encryption. The protocol is demonstrated to be secure against passive and active adversaries.This work was partly supported by grant TIN2010-15764 from the Ministerio de Ciencia e Innovación of Spain and by grant 2014SGR-691 from Generalitat de Catalunya

    Improving the quality of various types of recycled aggregates by biodesposition

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    Demand for construction materials has been rising in recent decades in many countries around the world, placing a heavy burden on the environment in terms of both the natural resources consumed and the enormous flow of waste generated. In order to obtain a more sustainable construction, it is often suggested to reintroduce the industry’s own waste as input for the manufacture of new materials. In this study, the use of construction and demolition waste of concrete or mixed concrete/ceramic nature is investigated as a replacement of natural aggregates in concrete. The greater affinity of recycled aggregates for water directly affects the workability and/or the concrete strength and durability. One possible solution to reduce the aggregates water absorption is to apply a biogenic treatment with calcium carbonate-precipitating bacteria that consolidate the aggregate surface or the adhering mortar. Experimental results show that the biodeposition treatment reduced the recycled aggregate water absorption by generating precipitation in the pores and an impermeable outer layer, most effectively on the roughest particle surfaces. The largest decrease happened in the aggregates with the highest porosity. The biogenic layer had a good cohesion with the aggregates. The results of sonication indicated that the most effective treatment was on recycled concrete aggregates (RCA) instead of mixed aggregates (MA). Therefore, the treated RCA was used to make concrete for further investigation. The concrete made with bio-treated RCA had a denser structure, a decreased water absorption (around 1%) and an improved compressive strength (25%)

    Freeze-thaw durability of recycled concrete from construction and demolition wastes

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    Road engineering is one of the most accepted applications for concrete including recycled aggregates from construction and demolition wastes as a partial replacement of the natural coarse aggregates. Amongst the durability concerns of such application, the deterioration due to freeze-thaw cycles is one of the most important causes decreasing the life span of concrete in countries with a continental climate. Moreover, the use of de-icing salts, which is a common practice to prevent ice formation on roadways and walkways, increases the superficial degradation of concrete due to frost-salt scaling. Thus, this paper aims to assess the resistance to frost salt with de-icing salts of two recycled concrete mixtures containing a 50% replacement of the conventional gravel by recycled aggregates both of mixed and ceramic nature, i.e. containing ceramic percentages of 34% and 100%, in comparison to a conventional concrete made with siliceous gravel. Therefore, the surface scaling was evaluated based on EN 1339 (2004) on 28 days cured cylinders, exposed to 7, 14, 21 and 28 freeze-thaw cycles in the presence of sodium chloride solution. Given that no airentraining admixture was used in any of the mixtures, the scaling of both conventional and recycled concretes exceeded the 1 kg/m2 limit established by the European standard. Nonetheless, for the casting surface, the recycled concrete with low ceramic content exhibited a similar behaviour to the conventional concrete, whereas the performance of the recycled concrete with high ceramic content was better. However, as expected, trowelled surfaces showed a worse performance and both recycled concretes had a lower freeze-thaw durability than the conventional mixture. In any case, the results suggested that the composition of the recycled aggregates could be used as a factor to limit the differences in performance between recycled and conventional mixtures

    Citrus psorosis virus movement protein contains an aspartic protease required for autocleavage and the formation of tubule-like structures at plasmodesmata

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    Plant virus cell-to-cell movement is an essential step in viral infections. This process is facilitated by specific virus-encoded movement proteins (MPs), which manipulate the cell wall channels between neighboring cells known as plasmodesmata (PD). Citrus psorosis virus (CPsV) infection in sweet orange involves the formation of tubule-like structures within PD, suggesting that CPsV belongs to "tubuleforming" viruses that encode MPs able to assemble a hollow tubule extending between cells to allow virus movement. Consistent with this hypothesis, we show that the MP of CPsV (MPCPsV) indeed forms tubule-like structures at PD upon transient expression in Nicotiana benthamiana leaves. Tubule formation by MPCPsV depends on its cleavage capacity, mediated by a specific aspartic protease motif present in its primary sequence. A single amino acid mutation in this motif abolishes MPCPsV cleavage, alters the subcellular localization of the protein, and negatively affects its activity in facilitating virus movement. The amino-terminal 34-kDa cleavage product (34KCPsV), but not the 20-kDa fragment (20KCPsV), supports virus movement. Moreover, similar to tubule-forming MPs of other viruses, MPCPsV (and also the 34KCPsV cleavage product) can homooligomerize, interact with PD-located protein 1 (PDLP1), and assemble tubule-like structures at PD by a mechanism dependent on the secretory pathway. 20KCPsV retains the protease activity and is able to cleave a cleavage-deficient MPCPsV in trans. Altogether, these results demonstrate that CPsV movement depends on the autolytic cleavage of MPCPsV by an aspartic protease activity, which removes the 20KCPsV protease and thereby releases the 34KCPsV protein for PDLP1-dependent tubule formation at PD. IMPORTANCE Infection by citrus psorosis virus (CPsV) involves a self-cleaving aspartic protease activity within the viral movement protein (MP), which results in the production of two peptides, termed 34KCPsV and 20KCPsV, that carry the MP and viral protease activities, respectively. The underlying protease motif within the MP is also found in the MPs of other members of the Aspiviridae family, suggesting that protease-mediated protein processing represents a conserved mechanism of protein expression in this virus family. The results also demonstrate that CPsV and potentially other ophioviruses move by a tubule-guided mechanism. Although several viruses from different genera were shown to use this mechanism for cell-to-cell movement, our results also demonstrate that this mechanism is controlled by posttranslational protein cleavage. Moreover, given that tubule formation and virus movement could be inhibited by a mutation in the protease motif, targeting the protease activity for inactivation could represent an important approach for ophiovirus control.Fil: Robles Luna, Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Biotecnología y Biología Molecular. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Biotecnología y Biología Molecular; ArgentinaFil: Peña, Eduardo José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Biotecnología y Biología Molecular. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Biotecnología y Biología Molecular; ArgentinaFil: Borniego, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Biotecnología y Biología Molecular. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Biotecnología y Biología Molecular; ArgentinaFil: Heinlein, Manfred. Université de Strasbourg; Francia. Centre National de la Recherche Scientifique; FranciaFil: Garcia, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Biotecnología y Biología Molecular. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Biotecnología y Biología Molecular; Argentin

    Diseño e implementación de un sistema de segmentación de los juegos de casinos de acuerdo con su nivel de actividad

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    El sector al cual apunta nuestro proyecto es el sector de la industria del Juego, específicamente en el sistema de las máquinas tragamonedas, las cuales bajo la perspectiva de un modelo de minería de datos permita a los administradores obtener conclusiones a fin de aplicarlas en su modelo de negocios. Específicamente tratamos el negocio de la empresa Interecuador S.A. dedicada al negocio de explotación de máquinas tragamonedas en calle, en locales y en salas de juego y casinos. El negocio posee diversos productos que pueden ser catalogados bajo dos grandes categorías: Mesas y máquinas. Dentro de mesas abarca todos los juegos de azar basados en cartas que tienen la intervención humana, este tipo de productos es exclusivo de casinos. Dentro de máquinas existen múltiples variedades de marcas, modelos y juegos los cuales se utilizan tanto en el negocio de calle, locales, casinos y salas de juego. Dadas las diversas características de los mismos es necesaria la implementación de un método que nos permita explorar los datos y encontrar la mejor combinación de características de determinada máquina de manera que su implementación en determinado local basado en la estadística me garantice la mejor producción de la misma
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