Poder nobiliario y poder político en la Corte de Enrique IV (1454 - 1474)

Sin resume

La Real Fábrica de Tabacos de Sevilla. Dicotomía entre la representación del estado y la funcionalidad

[EN] This paper conducts a study of the functionality of a building for industrial use of the largest in Europe in the eighteenth century, the Royal Tobacco Factory of Seville. It analyses the relationship between site, space, design and construction valuing the military engineers involved in the project and the direction of the works, with an academic training oriented to respond to fortification works, far from the development of industrial projects. As a symbol of the architecture of power represented by the State, it conveyed the idea of an empire that stood above other kinds of restrictions of the time. With the advent of new inventions such as automation and mechanisation, the space was gradually equipped with new machinery until the building was finally destined for a use far removed from its origins, namely as a military barracks and headquarters of some university faculties and the Rectorate, conveying the idea of malleability that responds to unprojected future demands.[ES] El presente trabajo realiza un estudio de funcionalidad de un edificio proyectado para uso industrial de los mayores de Europa en el siglo XVIII, La Real Fábrica de Tabacos de Sevilla. Analiza la relación entre ubicación, espacio, diseño y construcción, valorando los ingenieros militares que intervinieron en el proyecto y en la dirección de las obras, con formación académica dirigida para dar respuesta a obras de fortificación, alejada de la elaboración de proyectos industriales. Símbolo de la arquitectura de poder representada por el Estado, transmitía la idea de imperio por encima de otro tipo de restricciones de la época. La llegada de nuevos inventos con la automatización y maquinización hizo que el espacio se fuera acomodando a la nueva maquinaria hasta que finalmente el edificio fuera destinado a un uso alejado de su origen, como cuartel militar y sede de algunas facultades universitarias y el Rectorado, lo que nos transmite la idea de maleabilidad, respondiendo a demandas futuras no proyectadas.Castillo García, M.; Racero Montes, FJ.; Barrera-Vera, JA. (2023). The Royal Tobacco factory of Seville. Representation of the state versus functionality. EGE Revista de Expresión Gráfica en la Edificación. (19):51-64. https://doi.org/10.4995/ege.2023.2073651641

Proyecto: Calefactor Eléctrico

En este trabajo de la asignatura de Eficiencia Energética en el Producto 2013-2014 se trata un calefactor eléctrico doméstico eficiente. A lo largo del documento se tratarán temas como el estudio de mercado, el comportamiento del usuario o las nuevas tecnologías de eficiencia energética, tratando de acercar al lector a la realidad de dicho product

Diseño y construcción de un control de temperatura para el fluido del banco de pruebas para bombas hidráulicas de desplazamiento positivo

El presente trabajo describe el diseño y construcción de un sistema de control de temperatura del fluido de trabajo para el banco de pruebas para bombas hidráulicas de desplazamiento positivo, presente en el laboratorio de sistemas dinámicos, utilizando un sistema de enfriamiento, comandado por microcontrolador, con comunicación a computador.The present work describes the design and construction of a working fluid temperature control system for the test bench for positive displacement hydraulic pumps, present in the dynamic systems laboratory, using a cooling system, commanded by microcontroller, with communication to a computer

Local flap reconstruction of large scalp defects

Scalp defects can have a number of origins, and their repair is dependent upon their location, size and depth. In the case of the scalp, the repair of even small defects is complicated. Local flaps are the reference for the reconstruction of such defects. Knowledge of scalp anatomy is essential for preparing these flaps, which must be based on one or two vascular pedicles to afford a large rotation angle ? thereby facilitating closure of the defect. The parietal zone is the location offering the greatest flap mobilization possibilities. We present a case involving the repair of a major pericranial frontoparietal scalp defect. A local transverse posterior transpositioning scalp flap was raised with the posterior auricular and occipital arteries as vascular pedicle. Following repositioning of the flap, a free partial-thickness skin graft from the thigh was used to cover the donor zone. A review is provided of the different techniques for the reconstruction of large scalp defects

El desarrollo profesional del profesorado ante el actual desarrollo tecnológico

En este artículo presentamos las principales aportaciones de un estudio realizado sobre la utilización de diferentes medios tecnológicos realizada por una muestra de profesores y profesoras universitarias. Entre las categorías que ayudan a entender los usos de dichas herramientas en las prácticas docentes está la finalidad instructiva o formativa de los mismos, las estrategias organizativas utilizadas en los centros para ubicar los medios y, finalmente, la formación y apoyo técnico disponible en las mencionadas instituciones de enseñanza superior.In this article we present the main contributions of a study carried out on the use of different technological means carried out by a sample of university teachers. The instructive or formative purpose of the same ones is among the categories that they help to understand the uses of this tools in the educational practices, the organizational strategies used in the centers to locate the means and, finally, the formation and available technical support in the mentioned higher education institutions

R32 Heat Transfer Coefficient During Condensation In A Mini-Channel Multiport Tube

The use of micro- and mini-channels in heat exchanger has increased in recent decades. They contribute to increasing efficiency and reducing refrigerant charge and compactness of heat exchangers. The aim of this study is to experimentally determine the heat transfer coefficient in mini-channels of two-phase flow processes with the low GWP refrigerant R32 and compare it with the values provided by some of the correlations developed by other researchers. In the existing literature there are a few publications studying the refrigerant R32. R32 has medium flammability, classified as A2 by ASHRAE. European air conditioning manufactures point to use R32 instead of R410A. R32 has lower global warming potential (GWP = 675) than R410a (GWP = 2088). Environmental improvements must also be considered. R32 is a single component refrigerant so recycling is easier than R410A process; also R32 is safer than R410A according to NFPA classification, although R410A flammability is lower than R32 because of the addition of R125. An installation for the study of condensation processes has been constructed at the “Technical University of Cartagena”. The more relevant results of heat transfer coefficient will be presented in this paper. The analysed data have been measured for R32 flowing through aluminium square multiport tubes with a hydraulic diameter of 1.17 mm and compared with R410A. The influence of saturation temperature (or pressure), flow velocity, and vapour quality in heat transfer coefficient have been studied. The values considered for these variables are: saturation pressure corresponding to 30, 35, 40, 45, and 50ºC; flow velocities from 100 to 700 kg/(s•m2); vapour quality from 0.05 to 0.9

Ulcera crónica lingual inducida por lipoma de la cavidad oral: caso clinico

Aunque se trata de uno de los tumores benignos más frecuentes del organismo, el hallazgo de lipomas en la cavidad oral es un hecho inusual. En esta localización suelen presentar un crecimiento lento, indoloro y asintomático que puede dar lugar a tumoraciones redondeadas y bien definidas de gran tamaño. En estos casos son frecuentes los síntomas relacionados con la compresión de las estructuras vecinas. En el presente trabajo estudiamos el caso clínico de un paciente en el que el lipoma intraoral fue el hallazgo definitivo tras el diagnostico diferencial exhaustivo de una úlcera crónica de la lengua y del suelo de la boca. La clave para el diagnóstico fueron las pruebas de imagen (TC y RNM) y el estudio citológico mediante punción aspiración con aguja fina. El tratamiento quirúrgico mediante extirpación del lipoma consiguió la curación de la úlcera. Finalmente revisamos la bibliografía pertinente y más actual acerca de la clínica, el diagnostico y el tratamiento de los lipomas de la cavidad oral.Although lipomas are among the most frequent tumors in the human body, their presentation in the oral cavity is not common. Oral cavity lipomas usually show a slow painless and assymptomatic growing. When these tumors reach big sizes, they can cause compressive symptons and deformities. In this paper we present the case of a patient in whom oral lipoma was the final finding in the differential diagnosis of a chronic mucosal ulcer. CT scan and MRI images and microscopical examination after fine-needle aspiration were the clue for the final diagnosis. The surgical excision of the tumor was the basis for the healing of the ulcer. We also review the most relevant and recent literature about clinic, diagnosis and treatment for these tumors

Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes

Lightweight aggregate concretes (LWAC) are versatile and interesting materials for projects that require greater structural efficiency. Due to the difference that exists between the densities of the materials used in these types of concrete, during transport and mainly compaction, their aggregates tend to separate from the mortar matrix, floating towards the surface, a phenomenon called segregation. Segregation in LWAC can affect its durability properties, its density, and directly affect its structural efficiency. In this work, different concrete densities (1700 kg/m3 and 1900 kg/m3) manufactured with different dosages (two different lightweight aggregates) and compaction methods (one or two layers) were analyzed to verify the impact of segregation on its structural efficiency. For this purpose, the segregation index of the LWAC was obtained by means of the image analysis technique. In addition, to obtain their structural efficiency, the density and compressive strength were obtained at different heights of the tested specimens. The results show the vibration of the samples in two layers leads to a more efficient elimination of trapped air, a reduction in the risk of segregation, and better structural efficiency.This research was funded by the University of Alicante ((GRE13‐03) and (VIGROB‐256))

Energy management in microgrids with renewable energy sources: A literature review

Renewable energy sources have emerged as an alternative to meet the growing demand for energy, mitigate climate change, and contribute to sustainable development. The integration of these systems is carried out in a distributed manner via microgrid systems; this provides a set of technological solutions that allows information exchange between the consumers and the distributed generation centers, which implies that they need to be managed optimally. Energy management in microgrids is defined as an information and control system that provides the necessary functionality, which ensures that both the generation and distribution systems supply energy at minimal operational costs. This paper presents a literature review of energy management in microgrid systems using renewable energies, along with a comparative analysis of the different optimization objectives, constraints, solution approaches, and simulation tools applied to both the interconnected and isolated microgrids. To manage the intermittent nature of renewable energy, energy storage technology is considered to be an attractive option due to increased technological maturity, energy density, and capability of providing grid services such as frequency response. Finally, future directions on predictive modeling mainly for energy storage systems are also proposed