73 resultados para Fernández Pérez de Aranda, Francisco-Biografies


Relevância:

20.00% 20.00%

Publicador:

Resumo:

[ES] Estudio de caso (Fiesta de S. Francisco en Pamplona, Navarra) del modo en que la derecha conservadora española (Bloque de Derechas) y los radicales (carlistas) emplearon densos elementos identificadores (“identidad”) de lo local (Navarra-España) y católica para generar actitudes y adhesiones políticas antirrepublicanas.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Las pilas de combustible se presentan hoy día como una de las alternativas de generación de energía limpia más adecuadas. En este proyecto de tesis se presenta una visión global de lo que son, de cómo funcionan y de cuáles son las leyes que rigen este funcionamiento, centrándose en las denominadas pilas de combustible de tipo PEM. Además de describir el modelo matemático utilizado para la simulación numérica, también se presenta un procedimiento optimizado para la simulación de prototipos de pila de combustible de tipo PEM. Se incluye una recopilación de los resultados más importantes de los estudios realizados en los últimos años relacionados con la influencia de los diferentes parámetros geométricos de los canales de flujo en el rendimiento global de una pila de combustible de tipo PEM. Esta revisión se ha utilizado como base para un nuevo estudio: Análisis de la influencia de la configuración de la sección transversal del canal de flujo en el funcionamiento de una pila de combustible de tipo PEM con canales de flujo de tipo serpentín. Finalmente, se realiza una propuesta de nueva geometría de canales de flujo que proporcione un rendimiento global óptimo al sistema a través de de la homogeneización de las condiciones de operación a lo largo de toda la superficie reactiva de la pila.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

This paper analyzes the use of artificial neural networks (ANNs) for predicting the received power/path loss in both outdoor and indoor links. The approach followed has been a combined use of ANNs and ray-tracing, the latter allowing the identification and parameterization of the so-called dominant path. A complete description of the process for creating and training an ANN-based model is presented with special emphasis on the training process. More specifically, we will be discussing various techniques to arrive at valid predictions focusing on an optimum selection of the training set. A quantitative analysis based on results from two narrowband measurement campaigns, one outdoors and the other indoors, is also presented.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Dedicated to Prof. Julio Alvarez-Builla on the occasion of his 65th anniversary.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Santamaría, José Miguel; Pajares, Eterio; Olsen, Vickie; Merino, Raquel; Eguíluz, Federico (eds.)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

In a recent paper Leong-Huang:2010 {Journal of Applied Statistics 37, 215–233} proposed a wavelet-correlation-based approach to test for cointegration between two time series. However, correlation and cointegration are two different concepts even when wavelet analysis is used. It is known that statistics based on nonstationary integrated variables have non-standard asymptotic distributions. However, wavelet analysis offsets the integrating order of nonstationary series so that traditional asymptotics on stationary variables suffices to ascertain the statistical properties of wavelet-based statistics. Based on this, this note shows that wavelet correlations cannot be used as a test of cointegration.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

8 cartas y 3 tarjetas (mecanografiadas y manuscritas) ; entre 220x280mm y 190x74mm. Ubicación: Caja 1 - Carpeta 2

Relevância:

20.00% 20.00%

Publicador:

Resumo:

[ES] La calificación crediticia externa es un elemento clave para el buen fin de las operaciones de titulización. No obstante, las agencias de calificación han sido objeto de una intensa controversia, cuestionándose su fiabilidad y objetividad. En este trabajo abundamos en esta cuestión, analizando la distribución de los ratings otorgados a las emisiones de bonos de titulización llevadas a cabo en España (1993-2011), uno de los países más activos en cuanto al volumen de emisiones, llegaron a ocupar el segundo puesto a nivel europeo y el tercero a nivel mundial. Aportamos evidencia sobre ciertas anomalías entre las que cabe destacar la estructura oligopolística del mercado del rating, la fragilidad desde una perspectiva histórica de las calificaciones otorgadas, y la existencia de patrones no homogéneos en la elección de la agencia de calificación, tanto si se tiene en cuenta la sociedad gestora, como el colateral de respaldo.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Pannexin1 (Panx1) is a plasma membrane channel permeable to relatively large molecules, such as ATP. In the central nervous system (CNS) Panx1 is found in neurons and glia and in the immune system in macrophages and T-cells. We tested the hypothesis that Panx1-mediated ATP release contributes to expression of Experimental Autoimmune Encephalomyelitis (EAE), an animal model for multiple sclerosis, using wild-type (WT) and Panx1 knockout (KO) mice. Panx1 KO mice displayed a delayed onset of clinical signs of EAE and decreased mortality compared to WT mice, but developed as severe symptoms as the surviving WT mice. Spinal cord inflammatory lesions were also reduced in Panx1 KO EAE mice during acute disease. Additionally, pharmacologic inhibition of Panx1 channels with mefloquine (MFQ) reduced severity of acute and chronic EAE when administered before or after onset of clinical signs. ATP release and YoPro uptake were significantly increased in WT mice with EAE as compared to WT non-EAE and reduced in tissues of EAE Panx1 KO mice. Interestingly, we found that the P2X7 receptor was upregulated in the chronic phase of EAE in both WT and Panx1 KO spinal cords. Such increase in receptor expression is likely to counterbalance the decrease in ATP release recorded from Panx1 KO mice and thus contribute to the development of EAE symptoms in these mice. The present study shows that a Panx1 dependent mechanism (ATP release and/or inflammasome activation) contributes to disease progression, and that inhibition of Panx1 using pharmacology or gene disruption delays and attenuates clinical signs of EAE.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Background: Lynch syndrome (LS) is an autosomal dominant inherited cancer syndrome characterized by early onset cancers of the colorectum, endometrium and other tumours. A significant proportion of DNA variants in LS patients are unclassified. Reports on the pathogenicity of the c.1852_1853AA>GC (p.Lys618Ala) variant of the MLH1 gene are conflicting. In this study, we provide new evidence indicating that this variant has no significant implications for LS. Methods: The following approach was used to assess the clinical significance of the p.Lys618Ala variant: frequency in a control population, case-control comparison, co-occurrence of the p.Lys618Ala variant with a pathogenic mutation, co-segregation with the disease and microsatellite instability in tumours from carriers of the variant. We genotyped p.Lys618Ala in 1034 individuals (373 sporadic colorectal cancer [CRC] patients, 250 index subjects from families suspected of having LS [revised Bethesda guidelines] and 411 controls). Three well-characterized LS families that fulfilled the Amsterdam II Criteria and consisted of members with the p.Lys618Ala variant were included to assess co-occurrence and co-segregation. A subset of colorectal tumour DNA samples from 17 patients carrying the p.Lys618Ala variant was screened for microsatellite instability using five mononucleotide markers. Results: Twenty-seven individuals were heterozygous for the p.Lys618Ala variant; nine had sporadic CRC (2.41%), seven were suspected of having hereditary CRC (2.8%) and 11 were controls (2.68%). There were no significant associations in the case-control and case-case studies. The p.Lys618Ala variant was co-existent with pathogenic mutations in two unrelated LS families. In one family, the allele distribution of the pathogenic and unclassified variant was in trans, in the other family the pathogenic variant was detected in the MSH6 gene and only the deleterious variant co-segregated with the disease in both families. Only two positive cases of microsatellite instability (2/17, 11.8%) were detected in tumours from p.Lys618Ala carriers, indicating that this variant does not play a role in functional inactivation of MLH1 in CRC patients. Conclusions: The p.Lys618Ala variant should be considered a neutral variant for LS. These findings have implications for the clinical management of CRC probands and their relatives.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

1 tarjeta y 1 carta (manuscritas y mecanografiadas) ; entre 146x92mm y 135x215mm. Ubicación: Caja 1 - Carpeta 31

Relevância:

20.00% 20.00%

Publicador:

Resumo:

12 cartas y 2 notas (manuscritas) ; entre 160x215mm y 240x350mm. Ubicación: Caja 1 - Carpeta 41