Performance optimization in switched reluctance motor drives

In this paper, switched reluctance motors (SRM) are proposed as an alternative for electric power assisted steering (EPAS) applications. A prototype machine has been developed as very attractive design for a steering electric motor, both from a cost and size perspective. A fourphase 8/6 SRM drive is designed for a rack type EPAS which should provide a maximum force of 10 kN. Two-dimension finite element analysis is used to validate the design

Development of an electrochemical maltose biosensor

In this work, electrochemical maltose biosensors based on mutants of the maltose binding protein (MBP) are developed. A ruthenium II complex (Ru II ), which is covalently attached to MBP, serves as an electrochemical reporter of MBP conformational changes. Biosensors were made through direct attachment of Ru II complex modified MBP to gold electrode surfaces. The responses of some individual mutants were evaluated using square wave voltammetry. A maltose-dependent change in Faradic current and capacitance was observed. It is therefore demonstrated that biosensors using generically this family of bacterial periplasmic binding proteins (bPBP) can be made lending themselves to facile biorecognition element preparation and low cost electrochemical transduction

Torque control of switched reluctance motors

This paper presents the performance of an instantaneous torque control method. The simulation and experimental results illustrate the capability of Switched Reluctance Motors (SRM) being used in the motor drive industry. Based on experimental data, the advantages of this control method and its disadvantages in practical implementation were studied. The model used in the simulation is the linear magnetic model which has the 12/8 structure, the same structure as the experimental switched reluctance motor

Entre gaditanización y romanización: repertorios cerámicos, alimentación e integración cultural en Turdetania (siglos III-I A. C.)

The changes in composition and shapes in domestic wares detected among the communities along the lower Guadalquivir valley, from the 3rdcentury B.C., seem to point to a slow but constant transformation in alimentary habits. On one side is a growing Phoenician influence, reflectedin the emergence of new cooking wares: saucepans, mortars and big bowls, related with new ways of processing and preparing food.Following a parallel evolution, the distribution of salted products, oil and other foodstuffs from the area around the Strait and the Cadiz plain becomes common. However, local cooking wares, mainly saucepans and big, straight-walled bowls, remain dominant at least until the early 1st century B. C., suggesting a low receptivity for changes in cooking practices. The Roman conquest introduced Italian fine wares, without apparently affecting consumption patterns among local populations. In addition,from the 2nd century B. C. and over the following century, the importation and imitation of Italian cooking wares became generalised in indigenous contexts

Bilateral Asymmetries Assessment in Elite and Sub-Elite Male Futsal Players

This study aimed to investigate morphological, functional, and neuromuscular asymmetries on futsal players’ lower limbs at different competitive levels. Sixteen male elite futsal players from the Spanish National Futsal League and thirteen male sub-elite futsal players from the third division participated in this study. Morphological asymmetry was assessed through bioelectrical impedance (fat-mass (g and %) and lean-mass (g)). Functional asymmetry was assessed by means of a 20-s static unipedal balance test. Finally, neuromuscular asymmetry was assessed using tensiomiography tests on both the rectus femoris (RF) and biceps femoris (BF) of each participant. The three tests conducted did not reveal significant bilateral asymmetries in elite players. On the other hand, sub-elite players showed significant bilateral asymmetry in fat-mass percentage between dominant and non-dominant limbs (+6%; CI95%: 1 to 11; ES: 0.88; p = 0.019). They also showed higher bilateral asymmetry in the delay time of the RF (+13%; CI95%: 7 to 21; ES: 1.3; p 0.05) did not evidence asymmetries regardless of the level of the participants. Elite futsal players do not develop bilateral asymmetries in lower limbs in the studied parameters. On the contrary, sub-elite players are likely to develop morphological and neuromuscular asymmetries between their dominant leg and non-dominant leg.Sin financiación3.390 JCR (2020) Q1, 42/176 Public, Environmental & Occupational Health0.747 SJR (2020) Q2, 50/136 Health, Toxicology and MutagenesisNo data IDR 2020UE

Statistical Techniques for Aggregating Experiments Results

This volume describes a set of aggregation techniques used in several different branches of science. It also sets out a strategy for applying these techniques together to aggregate experimental studies conducted within the field of SE and thereby generate pieces of knowledge based on the best available evidence

La transición energética de China : perfiles y propulsores internos

China está pasando, desde principios de los años noventa, por lo que puede calificarse como una transición energética. El creciente aprovisionamiento de hidrocarburos en los mercados internacionales es quizás el rasgo más llamativo de esta transformación, por lo que el análisis del sistema energético chino frecuentemente conduce a estudios de geoestrategia. En este trabajo se analizan, por una parte, los rasgos que caracterizan la transición energética china -y no sólo la dependencia de mercados exteriores de petróleo- destacando (/cuatro) líneas de continuidad con el esquema tradicional y (siete) líneas de ruptura con dicho esquema. Por otra parte, se estudia la influencia determinante que sobre esos cambios energéticos estén ejerciendo tres rasgos de la actual fase de desarrollo: i) el fuerte crecimiento y la transformación de la especialización industrial, ii)el impulso de los transportes y iii) las nuevas pautas sociales derivadas del proceso de urbanización y de los hábitos de consumo. Por tanto, si éstos fueran en efecto los factores propulsores de la transición energética y si persistieran en el tiempo, cabría esperar la continuidad de las tendencias actuales de la transición energética, incluyendo la creciente dependencia de mercados exteriores.______________________________Since the beginning of the 1990s, China has been undergoing what could be termed as an energy transition. The increasing provisioning of hydrocarbon in international markets is perhaps the most striking feature of this transformation. Therefore, analysis of the Chinese energy system frequently leads to geostrategic studies. In this article we analyze, on the one hand, the features that define the energy transition in China –not exclusively its dependence on foreign oil markets– highlighting (four) continuities and (seven) ruptures with the traditional scheme. On the other hand, we study the relation between those energy transformations and three elements of China’s current development phase: i) strong growth and changes in industrial specialization, ii) transportation expansion, and iii) new social patterns deriving from urbanization and consumption habits. Therefore, if these three elements of development actually are drivers for China’s energy transition and if they persist, the current features of the energy transition, including the growing dependence on external markets, will prevail in the near future

Americanismos en la Crónica de la Nueva España de Francisco Cervantes de Salazar

El presente trabajo tiene como objetivo estudiar la presencia de americanismos en la Crónica de la Nueva España de Francisco Cervantes de Salazar.La figura de Cervantes de Salazar resulta de especial relevancia porque se trata de uno de los primeros humanistas que viaja a la Nueva España, donde llega a desempeñar numerosas ocupaciones, entre las que destaca el rectorado de la recién establecida Universidad de México o la canonjía de la catedral de México.En torno al año 1557, comienza a escribir una crónica de la conquista de México cuya redacción se alarga durante años y que nunca llegará a concluir.Hemos dedicado los primeros capítulos a analizar la figura del autor y su trayectoria vital y literaria. Aunque no hay demasiados datos sobre la vida de Cervantes de Salazar antes de su llegada a México, sabemos que estuvo al servicio de García de Loaysa, arzobispo de Sevilla y presidente del Consejo de Indias, lo que le permitió entrar en contacto con los españoles que retornaban desde las Indias a la Península. Esta circunstancia determinará la decisión de nuestro autor de abandonar la Península para siempre y comenzar una nueva vida en México a partir de 1551.En sus últimos años en España, llegó a publicar unas Obras, en las que glosaba unos opúsculos de otros humanistas, y desempeñó brevemente el puesto de profesor de Retórica en la recién creada Universidad de Osuna, un centro de estudios muy menor que no contaba con el prestigio de otras universidades como las de Salamanca o Alcalá. En cualquier caso, la experiencia de Osuna le sirvió después a nuestro autor para postularse como el primer rector de la nueva Universidad de México..

Las acequias de careo, un dispositivo pionero de recarga artificial de acuíferos en Sierra Nevada, España. Caracterización e inventario

Las acequias de careo constituyen uno de los primeros dispositivos para la recarga artificial de acuíferos de la Península Ibérica. Operativas desde el periodo musulmán, presentan un sistema de construcción y distribución del agua inteligente y todavía operativo en la actualidad, lo que constituye un ejemplo a tener en cuenta en la gestión hídrica. En este artículo se ha realizado una recopilación bibliográfica de su origen, modo de construcción y funcionamiento, actualizado el inventario existente, estudiado en qué contexto geológico fueron construidas y obtenido una serie de recomendaciones prácticas a tener en cuenta en el diseño y gestión de sistemas de recarga artificial superficial de acuíferos