Monasterio de Agustinas Recoletas de Pamplona. Tres siglos de historia. [Reseña]

Reseña de: José Luis SÁENZ RUIZ DE OLALDE, Monasterio de Agustinas Recoletas de Pamplona. Tres siglos de historia, Gobierno de Navarra. Departamento de Cultura y Turismo. Institución Príncipe de Viana, Pamplona 2004, 667 pp

Las raíces de la cultura europea. Ensayos en homenaje al profesor Joaquín Lomba. [Reseña]

Reseña de: José SOLANA DUESO - Elvira BURGOS DÍAZ - Pedro Luis BLASCO AZNAR (eds.), Las raíces de la cultura europea. Ensayos en homenaje al profesor Joaquín Lomba, Institución «Fernando el Católico», Zaragoza 2004,691 pp

Archivo Gomá. Documentos de la Guerra Civil, 2: enero de 1937. [Reseña]

Reseña de: José ANDRÉS-GALLEGO, Antón M. PAZOS (eds.), Archivo Gomá. Documentos de la Guerra Civil, 2: enero de 1937, CSIC, Madrid 2002, 540 pp

Heavy meson semileptonic differential decay rate in two dimensions in the large Nc

We study QCD in 1+1 dimensions in the large $N_c$ limit using light-front Hamiltonian perturbation theory in the $1/N_c$ expansion. We use this formalism to exactly compute hadronic transition matrix elements for arbitrary currents at leading order in $1/N_c$. We compute the semileptonic differential decay rate of a heavy meson, $d\Gamma/dx$, and its moments, $M_N$, using the hadronic matrix elements obtained previously. We put some emphasis in trying to understand parity invariance. We also study with special care the kinematic region where the operator product expansion ($1/N \sim 1-x \sim 1$) or non-local effective field theories ($1/N \sim 1-x \sim \Lambda_{QCD}/m_Q$) can be applied. We then compare with the results obtained using an effective field theory approach based on perturbative factorization, with the focus to better understand quark-hadron duality. At the end of the day, using effective field theories, we have been able to obtain expressions for the moments with relative accuracy of $O(\Lambda_{QCD}^2/m_Q^2)$ in the kinematic region where the operator product expansion can be applied, and with relative accuracy of $O(\Lambda_{QCD}/m_Q)$ in the kinematic region where non-local effective field theories can be applied. These expressions agree, within this precision, with those obtained from the hadronic result using the layer-function approximation plus Euler-McLaurin expansion. Very good numerical agreement for the moments is obtained between the exact result and the result using effective field theories.Comment: 52 pages, 30 figures, references added, small modifications, some discussion of the four dimensional case changed, journal versio

Influence of the strong metal support interaction effect (SMSI) of Pt/TiO2 and Pd/TiO2 systems in the photocatalytic biohydrogen production from glucose solution

Two different catalysts consisting of Pt/TiO2 and Pd/TiO 2 were submitted to diverse oxidative and reductive calcination treatments and tested for photocatalytic reforming of glucose water solution (as a model of biomass component) in H2 production. Oxidation and reduction at 850°C resulted in better photocatalysts for hydrogen production than Degussa P-25 and the ones prepared at 500°C, despite the fact that the former consisted in very low surface area (6-8 m2/g) rutile titania specimens. The platinum-containing systems prepared at 850°C give the most effective catalysts. XPS characterization of the systems showed that thermal treatment at 850°C resulted in electron transfer from titania to metal particles through the so-called strong metal-support interaction (SMSI) effect. Furthermore, the greater the SMSI effect, the better the catalytic performance. Improvement in photocatalytic behavior is explained in terms of avoidance of electron-hole recombination through the electron transfer from titania to metal particles

Fracture test of a Gothic ribbed vault

A Gothic ribbed vault has been built at the School of Architecture of Madrid in order to investigate the construction complexities of this kind of vaults. The ribbed vault is described in the manuscript of Alonso de Vandelvira, and its shape was reconstructed making using the drawings this architect from the 16th century. The fracture test was carried on by loading the central keystone of the vault until its collapse took place. The experiment was filmed and by doing so, it was possible to observe the failure mechanism of the vault. At the same time, it was interesting to compare this collapse experience with the results obtained using two different me-thods. First, a stability calculation was carried out through graphic statics, and secondly a calcu-lation was performed using the rigid-block analysis method. The focus of this paper is to show and analyze the results of both studies

Differentiation of Trichuris species using a morphometric approach

Trichuris trichiura is a nematode considered as the whipworm present in humans and primates. The systematics of the genus Trichuris is complex. Morphological studies of Trichuris isolated from primates and humans conclude that the species infecting these hosts is the same. Furthermore, numerous molecular studies have been carried out so far to discriminate parasite species from humans and Non-Human Primates using molecular techniques, but these studies were not performed in combination with a parallel morphological study. The hypothesised existence of more species of Trichuris in primates opens the possibility to revise the zoonotic potential and host specificity of T. trichiura and other putative new species of whipworms. In the present work, a study of Trichuris Roederer, 1761 (Nematoda:Trichuridae) parasitizing C. g. kikuyensis, P. ursinus, Macaca sylvanus, Pan troglodytes, and Sus scrofa domestica has been carried out using modern morphometric techniques in order to differentiate populations of Trichuris isolated from four species of captive NHP from different geographical regions, and swine, respectively. The results obtained revealed strong support for geometrical morphometrics as a useful tool to differentiate male Trichuris populations. Therefore, morphometrics in combination with other techniques, such as molecular biology analyses, ought to be applied to further the differentiation of male populations. On the other hand, morphometrics applied to female Trichuris species does not seem to contribute new information as all the measurements combinations of obtained from females always showed similar resultsMinistry of Economy,Industry and Competitiveness(CGL2017-83057)FEDER funds, the Junta de Andalucía (BIO-338)V Plan Propio de Investigación of the University of Sevill

Origin of orbital ferromagnetism and giant magnetic anisotropy at the nanoscale

The origin of orbital magnetism recently observed in different nanostructured films and particles is discussed as a consequence of spin-orbit coupling. It is shown that contact potentials induced at the thin film surface by broken symmetries, as domain boundaries in self-assembled monolayers, lead to orbital states that in some cases are of large radius. The component of the angular momentum normal to the surface can reach very high values that decrease the total energy by decreasing spin-orbit interaction energy. Intraorbital ferromagnetic spin correlations induce orbital momenta alignment. The estimated values of the magnetic moments per atom are in good agreement with the experimental observations in thiol capped gold films and nanoparticles

OCULUS: Management System for Information Display

La Biblioteca de la Universidad de Sevilla dispone actualmente de 12 pantallas informativas repartidas entre los distintos centros que la conforman. Su función principal es difundir noticias de interés y contenidos autoformativos a la comunidad universitaria. En el presente proyecto se propone una solución eficiente para la automatización de contenidos multimedia en un entorno colaborativo. El objetivo es establecer un canal eficiente de comunicación con los usuarios de la Biblioteca Universitaria y cubrir así las necesidades de información que posee la comunidad Universitaria. A través de este medio se emitirán contenidos explicativos sobre recursos y servicios de la Biblioteca Universitaria de forma general y de las distintas bibliotecas de área de forma particular. La idea es crear una herramienta de gestión de contenidos dinámicos cuyo tratamiento, codificación y publicación sea completamente automático. Para ello se ha elaborado una aplicación ad hoc que responde a la necesidad de mejoras informativas de nuestra comunidad Universitaria y provee de un canal de comunicación coordinado, homogéneo con una calidad común.The Library of the University of Seville currently has 12 information screens distributed among its centres. Their main purpose is to broadcast news and self-training content to the university community. This project proposes an efficient solution for automating multimedia content in a collaborative environment. The aim is to establish an efficient communication channel with university library users and cater for the information requirements of the university community. This system will broadcast informative content on university library resources and services in general and more specific information on the different departmental libraries. A dynamic content management tool in which processing, encoding and publishing are carried out completely automatically. To do this an ad hoc application has been developed that responds to the need to improve the availability of information within our university community and provides a homogeneous, coordinated communication channel with a standardised quality

Sampling in unitary invariant subspaces associated to LCA groups

In this paper a sampling theory for unitary invariant subspaces associated to locally compact abelian (LCA) groups is deduced. Working in the LCA group context allows to obtain, in a unified way, sampling results valid for a wide range of problems which are interesting in practice, avoiding also cumbersome notation. Along with LCA groups theory, the involved mathematical technique is that of frame theory which meets matrix analysis when appropriate dual frames are computed