Deterioro cognitivo postquirúrgico en pacientes con enfermedad coronaria y/o valvulopatía aórtica

Se muestra la presencia de deterioro cognitivo postquirúrgico en pacientes con enfermedad coronaria y/o valvulopatía aórtica

Desarrollo local en municipios turísticos maduros

Se aplican los principios teóricos del desarrollo local al análisis del municipio de Torremolinos como destino turístico maduro

Situational-Context: A Unified View of Everything Involved at a Particular Situation

As the interest in the Web of Things increases, specially for the general population, the barriers to entry for the use of these technologies should decrease. Current applications can be developed to adapt their behaviour to predefined conditions and users preferences, facilitating their use. In the future,Web of Things software should be able to automatically adjust its behaviour to non-predefined preferences or context of its users. In this vision paper we define the Situational-Context as the combination of the virtual profiles of the entities (things or people) that concur at a particular place and time. The computation of the Situational-Context allow us to predict the expected system behaviour and the required interaction between devices to meet the entities’ goals, achieving a better adjustment of the system to variable contexts.

Trois concepts boétiens dans la réflexion féminine, du XIVe au XVIIIe siècle

Boecio introdujo cambios notables en la consideración de algunas nociones filosóficas y teológicas, en particular en las de «persona», «esencia» y «eternidad». Estudio la evolución de estas tres ideas, representadas en los textos objeto de análisis por palabras y expresiones como «personne», «créature humaine» o «éternel». Para hacerlo, interrogo desde perspectivas diversas –léxica, semántica, sintáctica y pragmática–, un corpus compuesto por obras de reflexión (tratados, cartas, memorias...) escritos en francés por mujeres entre los siglos XIV y XVIII.

Synthesis of fluorescent dendrimeric antigen efficiently internalized by human dendritic cells

A new fluorescent dendrimeric antigen (DeAn) based on a dendron with amoxicilloyl terminal groups has been synthetized. The synthesis implies a novel class of all-aliphatic polyamide dendrimer (BisAminoalkylPolyAmide Dendrimers, or BAPAD).[1] The introduction of a cystamine core allows the incorporation of this dendrons into a 1,8-naphthalimide fluorofore functionalized with a maleimide group. The fluorescence properties of this DeAn has been studied and compared with the properties of an equivalent dendron possessing amino-terminal groups. This DeAn has been used as a synthetic antigen in a biomedical assay that tests the amoxicillin sensitivity of dendritic cells (DC) from tolerant and allergic patients.

El cambio del clima y la barrera biogeográfica del estrecho de Gibraltar para las aves africanas

El reciente cambio del clima está afectando a la distribución de las especies, siendo habitual que se provoquen desplazamientos latitudinales. En el estrecho de Gibraltar, frontera biogeográica que separa la biota africana de la europea y, a su vez, puente de migración para muchas especies, estos cambios son de especial importancia. En esta investigación se han recopilado los registros homologados en España de varias especies de rapaces típicamente africanas que comienzan a observarse en Europa, con la intención de estudiar el posible proceso de colonización del continente Europeo. Algunos de los patrones detectados son su entrada a Europa a través del estrecho de Gibraltar, y la mayor frecuencia de ejemplares durante los periodos pre y post-reproductores. Se ha utilizado una de estas especies, el busardo moro, para obtener modelos de favorabilidad ambiental que demuestren la utilidad de dichos modelos en el estudio de las colonizaciones. Los resultados ponen de maniiesto que el clima es el principal factor que explica la distribución de esta especie, y también que la península ibérica cuenta con más áreas favorables para la especie que las que actualmente ocupa. De continuar el aumento de la temperaturas, cabe esperar que el busardo moro amplíe su actual área de distribución en el sur de la península ibérica, y también que un mayor número de especies africanas colonice el continente europeo.

Work engagement among school directors and teachers' behavior at work

Using data from a representative sample of public primary schools in Madagascar, this paper analyzes engagement at work among school directors and investigates the impact of school heads' supervisory roles on teachers' behavior at work. The results show clear signs of weak management within public primary schools. We find that school heads' engagement at work is positively associated with their employment conditions, job satisfaction, and overall working environment. The results also indicate that principals' management styles have a positive effect on teachers’ commitment at work, but no significant impact on absenteeism.

Costa del Sol (Spain), analysis of economic and land changes caused by tourism

Malaga is in southern Spain, in a region called Andalusia. Costa del Sol belongs to the province of Malaga, near the Strait of Gibraltar and near the coast of Africa (about 300 km) and about 2,300 km of Sluptz. The Costa del Sol is next to the Mediterranean Sea and near the Atlantic Ocean. Strong and rapid growth of tourism in the countries of southern Europe and in Poland. Spain currently (2015) is the third largest inbound of international tourism (68 mil.) and the second inbound in tourism revenue. Europe is a major world tourist region. The first recipient of tourism in the world is France. Most tourism takes place between developed countries.

Quantitative phase Analisis: A comparative study of Mo and Cu strictly monochromatic radiations

A comparison of the Rietveld quantitative phase analyses (RQPA) obtained using Cu-Kα1, Mo-Kα1, and synchrotron strictly monochromatic radiations is presented. The main aim is to test a simple hypothesis: high energy Mo-radiation, combined with high resolution laboratory X-ray powder diffraction optics, could yield more accurate RQPA, for challenging samples, than well-established Cu-radiation procedure(s). In order to do so, three set of mixtures with increasing amounts of a given phase (spiking-method) were prepared and the corresponding RQPA results have been evaluated. Firstly, a series of crystalline inorganic phase mixtures with increasing amounts of an analyte was studied in order to determine if Mo-Kα1 methodology is as robust as the well-established Cu-Kα1 one. Secondly, a series of crystalline organic phase mixtures with increasing amounts of an organic compound was analyzed. This type of mixture can result in transparency problems in reflection and inhomogeneous loading in narrow capillaries for transmission studies. Finally, a third series with variable amorphous content was studied. Limit of detection in Cu-patterns, ~0.2 wt%, are slightly lower than those derived from Mo-patterns, ~0.3 wt%, for similar recording times and limit of quantification for a well crystallized inorganic phase using laboratory powder diffraction was established ~0.10 wt%. However, the accuracy was comprised as relative errors were ~100%. Contents higher than 1.0 wt% yielded analyses with relative errors lower than 20%. From the obtained results it is inferred that RQPA from Mo-Kα1 radiation have slightly better accuracies than those obtained from Cu-Kα1. This behavior has been established with the calibration graphics obtained through the spiking method and also from Kullback-Leibler distance statistic studies. We explain this outcome, in spite of the lower diffraction power for Mo-radiation (compared to Cu-radiation), due to the larger volume tested with Mo, also because higher energy minimize pattern systematic errors and the microabsorption effect.

X-Ray powder diffraction laboratory @ University of Málaga (UMA)

X-Ray Powder Diffraction (XRPD) laboratory is a facility placed at Servicios Centrales de apoyo a la Investigación (SCAI) at University of Malaga (UMA) http://www.scai.uma.es/. This facility has three XRPD diffractometers and a diffractometer to measure high-resolution thin-films. X´Pert PRO MPD from PANalytical. This is a bragg-brentano (theta/2theta) with reflection geometry diffractometer which allows to obtain high resolution XRPD data with strictly monochromatic CuKα1 radiation (λ=1.54059Å) [Ge(111) primary monochromator] and an automatic sample charger. Moreover, it has parallel monochromatic CuKα1 radiation (λ=1.54059Å) with an hybrid Ge(220) monochromator for capillary and multiproposal (bulk samples up to 1 Kg) sample holders. The HTK1200N chamber from Anton Paar allows collecting high resolution high temperature patterns. EMPYREAN from PANalytical. This diffractometer works in reflection and transmission geometries with theta/theta goniometer, using CuKα1,2 radiation (λ=1.5418Å), a focusing X-ray mirror and a ultra-fast PIXCEL 3D detector with 1D and 2D collection data modes (microstructural and preferred orientation analysis). Moreover, the TTK450N chamber allows low temperature and up to 450ºC studies. A D8 ADVANCE (BRUKER) was installed in April 2014. It is the first diffractometer in Europe equipped with a Johansson Ge(111) primary monochromator, which gives a strictly monochromatic Mo radiation (λ=0.7093 Å) [1]. It works in transmission mode (with a sample charger) with this high resolution configuration. XRPD data suitable for PDF (Pair Distribution Function) analysis can be collected with a capillary sample holder, due to the high energy and high resolution capabilities of this diffractometer. Moreover, it has a humidity chamber MHC-trans from Anton Paar working on transmission mode with MoKα1 (measurements can be collected at 5 to 95% of relative humidity (from 20 to 80 ºC) and up to 150ºC [2]). Furthermore, this diffractometer also has a reaction chamber XRK900 from Anton Paar (which uses CuKα1,2 radiation in reflection mode), which allows data collection from room temperature to 900ºC with up to 10 bar of different gases. Finally, a D8 DISVOVER A25 from BRUKER was installed on December 2014. It has a five axis Euler cradler and optics devices suitable for high resolution thin film data collection collected in in-plane and out-of-plane modes. To sum up, high-resolution thin films, microstructural, rocking-curve, Small Angle X-ray Scattering (SAXS), Grazing incident SAXS (GISAXS), Ultra Grazing incident diffraction (Ultra-GID) and microdiffraction measurements can be performed with the appropriated optics and sample holders. [1] L. León-Reina, M. García-Maté, G. Álvarez-Pinazo, I. Santacruz, O. Vallcorba, A.G. De la Torre, M.A.G. Aranda “Accuracy in Rietveld quantitative phase analysis: a comparative study of strictly monochromatic Mo and Cu radiations” J. Appl. Crystallogr. 2016, 49, 722-735. [2] J. Aríñez-Soriano, J. Albalad, C. Vila-Parrondo, J. Pérez-Carvajal, S. Rodríguez-Hermida, A. Cabeza, F. Busqué, J. Juanhuix, I. Imaz, Daniel Maspoch “Single-crystal and humidity-controlled powder diffraction study of the breathing effect in a metal-organic framework upon water adsorption/desorption” Chem. Commun., 2016, DOI: 10.1039/C6CC02908F.

The use of mo and cu monochromatic radiations for quantitative phase analysis: study of the accuracy

Cement hydration is a very complex process in which crystalline phases are dissolving in water and after supersaturation hydrated crystalline and amorphous phases precipitate. Great efforts are being made to develop analytical tools to accurately quantify these processes and X-ray Powder Diffraction (XRPD) combined with Rietveld methodology is a suitable tool to quantify these complex mixtures and their time evolutions. However, some problems/drawbacks should be overcome to fully apply it to cement pastes characterization in order to get accurate phase analyses. In order to tackle this issue, a comparison of the Rietveld quantitative phase analyses (RQPA) obtained using Cu-Kα1, Mo-Kα1, and synchrotron strictly monochromatic radiations of three set of mixtures with increasing amounts of a given phase (spiking-method) is presented. The main aim is to test a simple hypothesis: high energy Mo-radiation, combined with high resolution laboratory X-ray powder diffraction optics, could yield more accurate RQPA, for challenging samples, than well-established Cu-radiation procedure(s). Firstly, a series of crystalline inorganic phase mixtures with increasing amounts of an analyte was studied in order to determine if Mo-Kα1 methodology is as robust as the well-established Cu-Kα1 one. Secondly, a series of crystalline organic phase mixtures with increasing amounts of an organic compound was analyzed. This type of mixture can result in transparency problems in reflection and inhomogeneous loading in narrow capillaries for transmission studies. Finally, a third series with variable amorphous content was studied. Limit of detection in Cu-patterns, ~0.2 wt%, are slightly lower than those derived from Mo-patterns, ~0.3 wt%, for similar recording times and limit of quantification for a well crystallized inorganic phase using laboratory powder diffraction was established ~0.10 wt%. From the obtained results it is inferred that RQPA from Mo-Kα1 radiation have slightly better accuracies than those obtained from Cu-Kα1. The results obtained in the previous comparison have been taken into account to obtain accurate RQPA, including the amorphous component with internal standard methodology, of hydrating cement pastes. The final goal of this second study was understanding the early-stage hydration mechanisms of a variety of cementing systems (Ordinary Portland Cement or Belite Alite Ye’elimite cement) as a function of water content, superplasticizer additives and type and content of sulfate source. In order to do so, X-ray powder diffraction data were taken in-situ with the humidity chamber coupled to the Mo-Kα1 powder diffractometer. Some results of this ongoing investigation will be reported and discussed.

Lectura y escritura de palabras y pseudopalabras a los seis y siete años en niños españoles

El objetivo de este estudio es comparar a los seis y siete años la lectura y la escritura de palabras y pseudopalabras en sujetos españoles. La muestra está formada por 116 alumnos, inicialmente de seis años, pertenecientes a un nivel sociocultural medio, de habla castellana y sin necesidades educativas especiales. Los sujetos fueron evaluados a los seis y siete años en exactitud, velocidad y eficiencia lectora de palabras y pseudopalabras, así como en exactitud escrita de palabras y pesudopalabras. Tras la realización de análisis descriptivo-exploratorios y sendas pruebas t de Student para muestras relacionadas, los resultados indican diferencias significativas entre lectura de palabras y lectura de pseudopalabras (exactitud, velocidad y eficiencia) y entre escritura de palabras y escritura de pseudopalabras (exactitud) a los 6 y 7 años, siendo el rendimiento lector y escritor mayor con palabras que con pseudopalabras en ambas edades. También se encontraron a los 6 y 7 años diferencias estadísticamente significativas entre lectura y escritura de palabras (exactitud), así como entre en lectura y escritura de pseudopalabras (exactitud), siendo el rendimiento en lectura y escritura de palabras mejor que el de pseudopalabras en ambas edades. Se discuten los resultados encontrados en función de las características de las tareas y de las distintas formas de acceso al léxico.

Conocimiento fonológico, denominación rápida y memoria fonológica en sujetos españoles

El objetivo de este estudio es comprobar si existen diferencias en algunos predictores cognitivos de la lectura (conocimiento fonológico, denominación rápida alfanumérica y no alfanumérica, y memoria fonológica) entre los seis y a los siete años en sujetos españoles. La muestra está formada por 116 alumnos de seis años inicialmente, pertenecientes a colegios de nivel sociocultural medio, de habla castellana y sin necesidades educativas especiales. Los sujetos fueron evaluados a los seis y siete años en las competencias cognitivas del estudio. Tras la realización de análisis descriptivo-exploratorios y sendas pruebas t de Student para muestras relacionadas se encontraron diferencias estadísticamente significativas entre los 6 y los 7 años tanto en conocimiento fonológico como en nombramiento rápido alfanumérico y no alfanumérico, siendo mejor la ejecución a los 7 años. Sin embargo, las diferencias no fueron estadísticamente significativas en memoria fonológica entre los 6 y los 7 años. En función de estos resultados, cabe esperar que las relaciones de estas variables con la lectura y la escritura de palabras y pseudopalabras a estas edades sean diferentes. Se resalta la implicación de los resultados en la práctica educativa, con el fin de prevenir las dificultades de aprendizaje y optimizar los procesos de enseñanza-aprendizaje de la lengua escrita en español.

Exploring value creation with Social Media use in hotels

En la última década las tecnologías de Social Media han revolucionado el entorno competitivo, reinventando la forma de relacionarse con los clientes. En el sector hotelero, hoteles de todo el mundo están usando dichas herramientas para atraer a los clientes, estableciendo conversaciones colaborativas con ellos que vayan forjando vínculos emocionales con la marca. Asimismo, los hoteles se han dado cuenta de que herramientas Social Media se han convertido en facilitadoras de estrategias CRM (Gestión de Relaciones con Clientes), por lo que están integrando el uso de ambas herramientas para conocer mejor a sus clientes. No obstante, a pesar de la gran relevancia y del uso generalizado de Social CRM, la eficacia de dichas herramientas y su impacto en la creación de valor han sido aspectos poco analizados en estudios previos. Asimismo, la escasa investigación existente parece indicar que los hoteles no están aprovechando todo su potencial transformador. Con objeto de explorar la temática, el presente trabajo propone un marco teórico en el que se analiza cómo los hoteles pueden beneficiarse del uso de Social Media (uso de redes sociales y de sitios de revisión), examinando su impacto en resultados e introduciendo el papel mediador de las capacidades de gestión de relación con clientes usando Social Media. El trabajo supone una primera aproximación teórica al fenómeno, y constituye una base para la realización de futuros análisis empíricos.

Elastic limit: The role of university-focused venture capital firms in extending knowledge and technology transfer

This paper has two main objectives. Firstly, to identify the role of the university-focused intermediaries, specifically UVCs, in order to explain how they interact at the early stage of USO creation, particularly regarding knowledge sharing. Secondly, to analyse whether they change their position once the USO is developed. This gives rise to two Research Questions: How does knowledge sharing occur in the dynamics of a university-based entrepreneurial ecosystem? And Do particular participants, such as UTTOs or UVCs, always occupy the same role and position within the university-based entrepreneurial ecosystem?