Assessment by immunoproteomic study of the immune response developed by different subunit vaccines against glässer's disease

Comunicaciones a congreso

The AGN Luminosity Fraction in Merging Galaxies

Galaxy mergers are key events in galaxy evolution, often causing massive starbursts and fueling active galactic nuclei (AGN). In these highly dynamic systems, it is not yet precisely known how much starbursts and AGN respectively contribute to the total luminosity, at what interaction stages they occur, and how long they persist. Here we estimate the fraction of the bolometric infrared (IR) luminosity that can be attributed to AGN by measuring and modeling the full ultraviolet to far-infrared spectral energy distributions (SEDs) in up to 33 broad bands for 24 merging galaxies with the Code for Investigating Galaxy Emission. In addition to a sample of 12 confirmed AGN in late-stage mergers, found in the $Infrared$ $Array$ $Satellite$ Revised Bright Galaxy Sample or Faint Source Catalog, our sample includes a comparison sample of 12 galaxy mergers from the $Spitzer$ Interacting Galaxies Survey, mostly early-stage. We perform identical SED modeling of simulated mergers to validate our methods, and we supplement the SED data with mid-IR spectra of diagnostic lines obtained with $Spitzer$ InfraRed Spectrograph. The estimated AGN contributions to the IR luminosities vary from system to system from 0% up to 91% but are significantly greater in the later-stage, more luminous mergers, consistent with what is known about galaxy evolution and AGN triggering.Comment: 26 pages, 10 figure

Editorial: Balance y tareas pendientes de la gestión de la revista Avances en Psicología Latinoamericana (2004-2015)

En el 2011 la revista Avances en Psicología Latinoamericana dio inicio a una nueva política según la cual la Dirección/Edición de la revista tendría períodos de duración de cinco años. A finales del 2015 terminaremos ese primer periodo y para el período 2016-2020 fueron nombrados como Director y Editora General de la revista los Dres. Miguel Gutiérrez y Luisa Ramírez, respectivamente. El propósito de esta Editorial es efectuar un balance de la gestión de los últimos doce años de la revista y dejar algunas reflexiones para el equipo sucesor y para la comunidad psicológica latinoamericana y de otras latitudes, que ha participado activamente en diferentes roles (autores, pares revisores, editores, lectores, entre otros). El fundador de la revista, Dr. Rubén Ardila, confió a finales de 2003 la orientación de la revista Avances en Psicología Clínica Latinoamericana a partir de 2004 a su actual Director (ver Pérez-Acosta, 2008). Bajo aquella nueva administración, la revista se convirtió en Avances en Psicología Latinoamerican

Optical phonons, crystal-field transitions, and europium luminescence-excitation processes in Eu2BaCoO5: Experiment and theory

The Europium compound Eu2BaCoO5 has been studied by means of Raman and x-ray-absorption spectroscopies. The eigenfunctions and frequencies of the optical normal modes have been calculated from an adequate potential showing good accordance with the observed phonons. In addition to Raman-allowed normal modes, several infrared and luminescence bands are observed between 10 and 300 K. The temperature dependence of these processes has allowed us to determine the complex interrelation between these two kinds of elementary excitations. A broad luminescence band (at 2.3 eV) is tentatively attributed to electronic transitions between Co2+ 3d crystal-field levels in the gap of the material. The mixing of these quasiatomic levels with apical oxygen orbitals, along the very short Co-O(2) bonds in the chains, can be the reason for the simultaneous enhancement of the intensities of the luminescence band and of the apical oxygen infrared modes through a resonant electron-phonon coupling. From the dependence of the phonon frequencies and the analysis of the extended x-ray-absorption fine structure spectra with the temperature it can be concluded that on decreasing the temperature the a axis becomes shorter, while the other two axes remain nearly unchanged. The emission spectrum in the visible range has been observed and interpreted in the frame of the crystal-field theory. We have studied the dependence of the intensity of the electronic transitions between 4f levels of the europium ions with the temperature and the energy of the exciting light. From the behavior of the Eu3+ luminescence peaks it has been possible to determine the processes of excitation and emission, which are shown to involve lattice phonons. The crystal-field parameters of the Eu3+ ions have been calculated from the energies of the lower terms of the ionComisión Interministerial de Ciencia y Tecnología PB 92, 114- C04-04 y MAT93-79

Current status of the torus palatinus and torus mandibularis

While there is a hereditary component to tori, this does not explain all cases. Tori tend to appear more frequently during middle age of life; the torus palatinus is more commonly observed in females, but this is not the case with the torus mandibularis. Certain ethnic groups are more prone to one torus or the other. The torus is mainly removed due to prostodontic reasons, as it may also be used as biomaterial, not only in periodontology, but also in implantology. The aim of this study was a review of the literature from the past twenty years

Anti-de Sitter space and black holes

Anti-de Sitter space with identified points give rise to black-hole structures. This was first pointed out in three dimensions, and generalized to higher dimensions by Aminneborg et al. In this paper, we analyse several aspects of the five dimensional anti-de Sitter black hole including, its relation to thermal anti-de Sitter space, its embedding in a Chern-Simons supergravity theory, its global charges and holonomies, and the existence of Killing spinors.Comment: 15 pages (twocolumn), 2 Postscript figure

Large scale synthesis of nanostructured zirconia-based compounds from freeze-dried precursors

Nanocrystalline zirconia powders have been obtained at the multigram scale by thermal decomposition of precursors resulting from the freeze-drying of aqueous acetic solutions. This technique has equally made possible to synthesize a variety of nanostructured yttria or scandia doped zirconia compositions. SEM images, as well as the analysis of the XRD patterns, show the nanoparticulated character of those solids obtained at low temperature, with typical particle size in the 10–15 nm range when prepared at 673 K. The presence of the monoclinic, the tetragonal or both phases depends on the temperature of the thermal treatment, the doping concentration and the nature of the dopant. In addition, Rietveld refinement of the XRD profiles of selected samples allows detecting the coexistence of the tetragonal and the cubic phases for high doping concentration and high thermal treatment temperatures. Raman experiments suggest the presence of both phases also at relatively low treatment temperatures.This study has been supported by the Spanish Ministry of Science and Technology and EU FEDER Program (MAT2009-14144-C03-01, MAT2009-14144-C03-03, MAT2012-38364-C03-01, MAT2012-38364-C03-02). The SCSIE of the Universitat de València is gratefully thanked for the use of the X-ray diffraction, electron microscopy, and analytical facilities. R. Moreno and T. Molina, from Instituto de Cerámica y Vidrio, CSIC, Madrid, are acknowledged by the realization of the agglomerate size measurements

A factor confirmation and convergent validity of the " areas of worklife scale" (AWS) to Spanish translation

Background: Perceived incongruity between the individual and the job on work-life areas such as workload, control, reward, fairness, community and values have implications for the dimensions of burnout syndrome. The “Areas of Work-life Scale” (AWS) is a practical instrument to measure employees´ perceptions of their work environments. AIMS: Validate a Spanish translation of the AWS, and it relationship with Masclach Burnout Inventory dimensions. Methods: The study was conducted in three medium-sized hospitals and seven rural and urban Primary Care centres (N = 871) in Spain. The “Maslach Burnout Inventory General Survey” (MBI-GS) and AWS were applied. We developed a complete psychometric analysis of its reliability, and validity. Results: Data on the reliability supported a good internal consistency (Cronbach a between .71, and .85). Construct validity was confirmed by a six factor model of the AWS as a good measure of work environments (¿2 (352) = 806.21, p < 0.001; ¿2/df = 2.29; CFI = 0.935, RMSEA = 0.039); concurrent validity was analysed for its relationship with other measures (opposing dimensions to burnout, and MBI), and each correlation between dimensions and subdimensions were statistically significant; as well, predictive validity, by a series of Multiple Regression Analysis examined the resulting patterns of the Confirmatory Factor Analysis (CFA) confirms the relationship between the work-life areas and burnout dimensions. Conclusions: Leiter and Maslach’s AWS has been an important instrument in exploring several work-life factors that contribute to burnout. This scale can now be used to assess the quality of work-life in order to design and assess the need for intervention programs in Spanish-speaking countries

Raman phonons as a probe of disorder, fluctuations and local structure in doped and undoped orthorhombic and rhombohedral manganites

We present a rationalization of the Raman spectra of orthorhombic and rhombohedral, stoichiometric and doped, manganese perovskites. In particular we study RMnO3 (R= La, Pr, Nd, Tb, Ho, Er, Y and Ca) and the different phases of Ca or Sr doped RMnO3 compounds as well as cation deficient RMnO3. The spectra of manganites can be understood as combinations of two kinds of spectra corresponding to two structural configurations of MnO6 octahedra and independently of the average structure obtained by diffraction techniques. The main peaks of compounds with regular MnO6 octahedra, as CaMnO3, highly Ca doped LaMnO3 or the metallic phases of Ca or Sr doped LaMnO3, are bending and tilt MnO6 octahedra modes which correlate to R-O(1) bonds and Mn-O-Mn angles respectively. In low and optimally doped manganites, the intensity and width of the broad bands are related to the amplitude of the dynamic fluctuations produced by polaron hopping in the paramagnetic insulating regime. The activation energy, which is proportional to the polaron binding energy, is the measure of this amplitude. This study permits to detect and confirm the coexistence, in several compounds, of a paramagnetic matrix with lattice polaron together with regions without dynamic or static octahedron distortions, identical to the ferromagnetic metallic phase. We show that Raman spectroscopy is an excellent tool to obtain information on the local structure of the different micro or macro-phases present simultaneously in many manganites.Comment: Submitted to PR

Persistence and transformations in yarn production, Antofagasta de la Sierra (VI-XIX centuries)

Presentamos un estudio comparativo, a lo largo de una trayectoria extensa (siglos VI-XIX), de un conjunto de hilados en fibra animal y vegetal que fueron recuperados a partir de excavaciones arqueológicas en Antofagasta de la Sierra, Puna meridional argentina. Nos enfocamos en tres temas, a modo de “hilos conductores”: la materia prima, los modos de hilar y el manejo del color. Discutimos continuidades y cambios en el tiempo y nos preguntamos acerca de sus implicancias en diversos aspectos técnicos y de la cosmovisión, especialmente a partir del impacto de la invasión hispana. Es por ello que, desde un punto de vista heurístico, tenemos en cuenta las ontologías nativas, como miradas más próximamente situadas en relación con los contextos arqueológicos locales.We present the comparative analysis, throughout an extensive trajectory (6th century to the end of the 19th century), of a set of animal and vegetable fiber yarns that were recovered from archaeological excavations in Antofagasta de la Sierra, Argentine southern Puna. We focus on three themes, as “guiding threads”: the raw material, the spinning modes and color use. We discuss continuities and changes over time, and we wonder about their implications in technical aspects and the worldview, especially from the impact of the Hispanic invasion. That is why, from a heuristic point of view, we consider native ontologies, as views more closely located in relation to local archaeological contexts.Sociedad Argentina de Antropologí