2,412 research outputs found

    Anthropometric measures as predictive indicators of metabolic risk in a population of “holy week costaleros”

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    Preventive measures are a priority in those groups that perform intense physical efforts without physical preparation and that can also be overweight or obese. One of the groups that reflect these characteristics is the costaleros of the Holy Week of Andalusia, Spain. This paper aims to describe the effect of obesity on blood pressure. A descriptive cross-sectional study was conducted on 101 costaleros. The anthropometric measures were determined through segmental impedance. Cardiac recovery and anaerobic power were measured through the Ruffier–Dickson test and the Abalakov test, respectively. Blood pressure was measured when the individuals were at rest. The Kruskal–Wallis test was applied for of continuous parameters and the X2 test for dichotomous measures. Binary logistic regression models were used for the subsequent analysis with R-square and Receiver Operating Characteristic (ROC) curves. The average population was 28 years of age, 173.7 cm tall, and 82.59 Kg weigh. The excess of body fat was 11.27 Kg and Body Mass Index was 27.33 Kg/m2. 72.3% showed abnormal blood pressure and 68.2% were overweight. 32.7% had a waist-hip ratio higher than 0.94. The probability of presenting abnormal blood pressure was higher among the subjects whose fat content was higher and muscle content was lower

    Software tool for optimising indoor/outdoor coverage in a construction site

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    A system architecture, an empirical propagation model, and a software combined with a CAD tool, have been designed to offer mobile communication services to construction sites. Results have been validated by measurements.Peer ReviewedPostprint (published version

    Meanings of the concept of finite limit of a function at a point: Background and Results

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    Eight Congress of European Research in Mathematics Education (CERME 8). Manavgat-Side, Antalya - Turkey, 6-10 February 2013.In this paper we present a description of previous work carried out by the authors on the general issue of designing and implementing a didactical planning for Spanish students from non-compulsory secondary education, 16-17 years old. The current research has as its aim to describe the meanings that students associate to specific terms from the language, such as, “to approach,” “to tend,”“to reach,”“to exceed,” and “to converge.” Prior to the study, we reviewed the mathematical use of these terms and we contrast this with the colloquial use of the terms. From the semi- structured interviews used to gather information, we provide an analysis of the written data. It is important to highlight that students have contributed with a variety of meanings, in addition to those from the previous review.This study was performed with aid and financing from Fellowship FPU AP2010- 0906 (MEC-FEDER), project EDU2012-33030 of the National Plan for R&D&R (MICIN), Subprogram EDUC, and group FQM-193 of the 3rd Andalusia Research Plan (PAIDI)

    Promoting light hydrocarbons yield by catalytic hydrodechlorination of residual chloromethanes using palladium supported on zeolite catalysts

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    Gas catalytic hydrodechlorination (HDC) of trichloromethane (TCM) and dichloromethane (DCM) was analyzed using Pd (1 wt.%) on different zeolites as catalysts. The aim of this study was to know the surface properties of the catalysts and reaction conditions that promote the yield to light hydrocarbons in this reaction. Five different zeolite supports were used from three commercial zeolites (KL, L-type; NaY, Faujasite; H-MOR, Mordenite). KL and NaY were submitted to ionic exchange treatments in order to increase their acidity and analyze the effect of the acidity in the activity and selectivity of the HDC reaction. Exchanged zeolites (HL and HY) showed the highest Pd dispersion due to their higher surface acidity. The best TCM/DCM conversion and selectivity to light hydrocarbons was obtained using the two non-exchanged zeolite-catalysts, KL and NaY. Low surface acidity seems to be the key aspect to promote the formation of light hydrocarbons. The formation of these products is favored at high reaction temperatures and low H2: chloromethane ratios. KL showed the highest selectivity to olefins (60%), although with a lower dechlorination degree. Non-exchanged NaY catalyst showed high selectivity to paraffins (70% and 95% for the HDC of DCM and TCM, respectively)Authors gratefully acknowledge financial support from FEDER/Ministerio de Ciencia, Innovación y Universidades—Agencia Estatal de Investigación/ CTM2017-85498-R. C. Fernández Ruiz acknowledges MINECO for his research gran

    La muralla Engel/Paris y la necrópolis protohistórica de Osuna

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    Durante las excavaciones arqueológicas realizadas en Osuna en el año 1903 por A. Engel y P. París, junto al Camino de San José, se exploró una muralla en una longitud de casi 100 m. que se asentaba sobre una necrópolis. En 1973 R. Corzo continuó las excavaciones en el punto en el que habían sido abandonados los trabajos por los franceses. Tanto éstos como Corzo fijaron su cronología hacia el s. 1 a.C., poniéndola en relación con los acontecimientos narrados en el Bellum Hispaniense. Sin embargo, el análisis de nuevas aportaciones surgidas durante los últimos años lleva a pensar que la datación de este elemento defensivo debe fijarse en un momento anterior. Para su discusión se considerarán tres aspectos, a saber, la técnica constructiva empleada en el muro, su probable época de erección y el valor funerario del sitio.In the archaeological explorations made next to Camino de San Jose in Osuna in 1903 by A. Engel and P. Paris, it was excavated an almost 100m long wall which was situated over a necropolis. In 1973 R. Corzo continued the excavations gave up by Frenchs. According to both Frenchs and Corzo, the wall dates from about 1" BC and it is connected with the events narrated in the Bellum Hispaniense. However, the new contributions appeared in the last years lead us to think this defensive element dates from an earlier time. In order to make sure of that, we are going to consider three aspects: the construction technique used, its probably erection time and the funeral value of the site

    EL TALLER DE ARDITE, COÍN (MÁLAGA)

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    La parte más occidental de la Hoya de Málaga, la situada en la margen derecha del río Guadalhorce en su curso bajo, está constituida por tierras que rondan los 300 m. de altitud sobre el nivel del mar y que drenan sus aguas al río Grande, afluente con caudal permanente de aquel. Los límites naturales de esta zona son: el propio Guadalhorce por el este; las elevaciones de las sierras de Mijas, Alpujata y Carrucha, con más de 1.000 m. en sus cotas más altas, por el sur; las sierras de Tolox y de las Nieves, con en torno a los 2.000, por el oeste; y Sierra Prieta, con 1.500 m., y, aunque algo más alejada y baja, Sierra de las Aguas, que cierra el arco montañoso por el norte.La zona que estamos describiendo resulta ser el marco en donde se inscribe Cerro Ardite. Este se nos muestra en primera instancia, como una corta y elevada cresta rocosa que domina ampliamente los terrenos circundantes. Con sus 460 m. de altitud se comporta como la atalaya central de una extensa zona cerealística y de olivar, entre laspoblaciones de Alozaina, Tolox, Guaro y Coín. Las coordenadas geográficas del mismo son 36° 42' 00" de latitud norte y 4° 50' 19" de longitud oeste. No obstante, la zona de tallerse sitúa a 36° 42' 20" y 4° 49' 38". Este punto seria uno central en torno al que los hallazgos se dispersan por el área circundante. El lugar del yacimiento pertenece a los terrenos de la finca del Cortijo Los Frailes, del término municipal de Coín, aunque el cerro, de gran extensión, abarca parte de los términos municipales de Alozaina, Tolox, Guaro y Coín, que vienen a confluir en este punto

    Preanalytical errors: the professionals’ perspective

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    This study was aimed at understanding the perspective on preanalytical errors from the point of view of the professionals involved in the preanalytical process. A significant contribution of their specialized knowledge and experience in day-to-day practice for identifying these kinds of mistakes, and their most frequent causes, was expected.It seems evident that weaknesses and threats are closely related to institutional organization aspects and the same is true for positive elements (strengths and opportunities). There is also an important appreciation of the staff’s implication. Staff´s opinions should be taken into account by institution managers, as they offer an approach that is different and complementary to the one traditionally applied, which is purely managerial and therefore not sufficient. The results should be complemented with more updated information. Multidisciplinary cooperation must involve not only professionals from different fields but also with different roles, i.e., managers, in order to obtain results that can be used to improve healthcare, save costs and to guarantee patient’s safety. We will continue with this research line investigating the same questions among primary care staff, in order to assess “the other side of the coin” of this problem.This study was partially supported by project Fondo de Investigaciones Sanitarias (FIS) grant PIFIS 1099/12 from “Instituto de Salud Carlos III” Ministerio de Sanidad y Política Social. Gobierno de España. (Health Ministry, Spanish Government).Yes2015-04-0

    Demand and Storage Management in a Prosumer Nanogrid Based on Energy Forecasting

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    Energy efficiency and consumers' role in the energy system are among the strategic research topics in power systems these days. Smart grids (SG) and, specifically, microgrids, are key tools for these purposes. This paper presents a three-stage strategy for energy management in a prosumer nanogrid. Firstly, energy monitoring is performed and time-space compression is applied as a tool for forecasting energy resources and power quality (PQ) indices; secondly, demand is managed, taking advantage of smart appliances (SA) to reduce the electricity bill; finally, energy storage systems (ESS) are also managed to better match the forecasted generation of each prosumer. Results show how these strategies can be coordinated to contribute to energy management in the prosumer nanogrid. A simulation test is included, which proves how effectively the prosumers' power converters track the power setpoints obtained from the proposed strategy.Spanish Agencia Estatal de Investigacion ; Fondo Europeo de Desarrollo Regional

    Aspectos estructurales y concepciones personales sobre límite finito de una función en un punto de estudiantes de bachillerato

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    El objeto de este trabajo es describir e interpretar las concepciones personales de un grupo de estudiantes de bachillerato acerca del concepto de límite finito de una función en un punto en términos de aspectos estructurales, compilados y sintetizados a partir de investigaciones previas. Estos aspectos son: la interpretación como objeto o como proceso de la noción de límite, su carácter exacto o aproximado, su consideración como proceso potencialmente infinito o finito en la práctica, su alcanzabilidad y su rebasabilidad. Los estudiantes respondieron a seis cuestiones para valorar la veracidad o falsedad de enunciados relativos a estos aspectos. Basados en estos aspectos, analizamos y tipificamos respuestas obtenidas en perfiles y destacamos la riqueza de relaciones entre los aspectos estructurales descritos, particularmente la vinculación entre la alcanzabilidad y la rebasabilidad.The purpose of this work is to describe and interpret the personal conceptions related to the concept of finite limit of a function at one point from a group of non-compulsory secondary education students in terms of structural aspects, compiled and synthesized from prior research. These aspects are: the interpretation of the limit notion as an object or a process, its exact or approximate character, its consideration as a potentially infinite or finite in practical process, its reachability and its possibility of being exceeded. Students answered six questions to verify the truthfulness or falsity of statements related to these properties. Based on these structural aspects, we analyze and typify the provided responses in profiles, pointing out the richness of relationships between these structural aspects, highlighting the one between reachability and the possibility of being exceeded.Este trabajo ha sido realizado con la ayuda y financiación de la beca FPU (AP2010- 0906), (MEC-FEDER), del proyecto “Modelización y representaciones en educación matemática (EDU2009-11337) del Plan Nacional de I+D+I (MICIN) y del grupo FQM- 193 (Didáctica de la Matemática. Pensamiento Numérico) del 3er Plan Andaluz de Investigación, Desarrollo e Innovación (PAIDI)

    Pathogenic and molecular diversity in highly virulent populations of the parasitic weed Orobanche cumana (sunflower broomrape) from Europe

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    The definitive version is available at www3.interscience.wiley.comThe parasitic weed Orobanche cumana (sunflower broomrape) constrains sunflower production in eastern and southern Europe and in the Middle East. Although genetic resistance is the most effective control method, new parasite races evolve overcoming sunflower resistance. In this work, highly virulent populations of O. cumana were analysed for pathogenicity and genetic diversity. The virulence of 11 populations from Hungary, Romania, Spain and Turkey was assessed and compared after infection of sunflower inbred lines to differentiate races of the parasite under glasshouse conditions. Molecular diversity among and within 27 parasite populations was studied by RAPD-PCR, UPGMA and amova analyses. Highly virulent race F was identified in Hungary, Spain and Turkey. The most virulent race (G) was also found in Turkey. The molecular analysis among highly virulent populations of O. cumana identified four molecular clusters, respectively, grouping populations from Central Spain, Hungary, South Spain and Turkey. The genetic homogeneity within parasite populations was confirmed, since no molecular divergences were found within them. This work constitutes the first geographical study of O. cumana together with pathogenicity and molecular traits inherent to each geographical group, and provides useful information for possible phylogenetic analyses of O. cumana. In addition, molecular markers associated with geographical origin could be developed and used as diagnostic tools to track new broomrape introductions into areas free of virulent races where they might represent a threat to sunflower production.This research was supported by the Ramón Areces Spanish Foundation, Spanish National Institute for Agricultural Research (RTA04-048), Spanish National Research Council (CSIC) (PIE200940I120) and Spanish Ministry for Science and Education (HH2005-0017). The placement of S. Raranciuc was granted by the European Science Foundation (CA849). L. Molinero-Ruiz was supported by an I3P post-doctoral contract (CSIC & European Social Fund).Peer reviewe
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