Enhanced removal of 8-quinolinecarboxylic acid in an activated carbon cloth by electroadsorption in aqueous solution

The effect of the electrochemical treatment (potentiostatic treatment in a filter-press electrochemical cell) on the adsorption capacity of an activated carbon cloth (ACC) was analyzed in relation with the removal of 8-quinolinecarboxylic acid pollutant from water. The adsorption capacity of an ACC is quantitatively improved in the presence of an electric field (electroadsorption process) reaching values of 96% in comparison to 55% in absence of applied potential. In addition, the cathodic treatment results in higher removal efficiencies than the anodic treatment. The enhanced adsorption capacity has been proved to be irreversible, since the removed compound remains adsorbed after switching the applied potential. The kinetics of the adsorption processes is also improved by the presence of an applied potential. (C) 2015 Elsevier Ltd. All rights reserved.Grateful acknowledgement is made to Ministerio de Economia y Competitividad (MAT2013-42007-P, JCI-2012-12664) and Generalitat Valenciana (Prometeo/2013/038) for the financial support.López-Bernabeu, S.; Ruiz-Rosas, R.; Quijada Tomás, C.; Montilla, F.; Morallón, E. (2016). Enhanced removal of 8-quinolinecarboxylic acid in an activated carbon cloth by electroadsorption in aqueous solution. Chemosphere. 144:982-988. https://doi.org/10.1016/j.chemosphere.2015.09.071S98298814

Murine models susceptibility to distinct Trypanosoma cruzi i genotypes infection

Chagas disease is a complex zoonosis that affects around 8 million people worldwide. This pathology is caused by Trypanosoma cruzi, a kinetoplastid parasite that shows tremendous genetic diversity evinced in six distinct Discrete Typing Units (TcI-TcVI) including a recent genotype named as TcBat and associated with anthropogenic bats. TcI presents a broad geographical distribution and has been associated with chronic cardiomyopathy. Recent phylogenetic studies suggest the existence of two genotypes (Domestic (TcIDom) and sylvatic TcI) within TcI. The understanding of the course of the infection in different mouse models by these two genotypes is not yet known. Therefore, we infected 126 animals (ICR-CD1, National Institute of Health (NIH) and Balb/c) with two TcIDom strains and one sylvatic strain for a follow-up period of 60 days. We quantified the parasitaemia, immune response and histopathology observing that the maximum day of parasitaemia was achieved at day 21 post-infection. Domestic strains showed higher parasitaemia than the sylvatic strain in the three mouse models; however in the survival curves Balb/c mice were less susceptible to infection compared with NIH and ICR-CD1. Our results suggest that the genetic background plays a fundamental role in the natural history of the infection and the sympatric TcI genotypes have relevant implications in disease pathogenesis. © 2016 Cambridge University Press

Osteocondritis disecante de rótula: A propósito de un caso

Presentamos un caso de Osteocondritis Disecante de inusual localización en rótula, con afectación bilateral y externa, tratado mediante perforaciones sin exéresis del fragmento, no descrito en la literatura previa para esta localización, consiguiendo un excelente resultado tras un seguimiento de 4 años.A case of osteochondritis dissecans at an unusual localization is presented. The lesion affected both patellae, and was externally located. Surgical treatment was indicated by means of bone perforations without removal of the fragment. An excellent result was observed at 4 years follow-up. To the best of our knowledge, this is the first time this method has been applied for the described location

Esbozo de una historiografía de la historia de la Iglesia en Venezuela (1965-2015)

La historiografía eclesiástica venezolana de estos últimos cincuenta años (1965-2015) se ha caracterizado por hacer un profundo análisis del decurso de las misiones que tuvo España en la amplia geografía venezolana. Los aportes de los investigadores en las relaciones de la Iglesia con los protagonistas de la independencia (1810-1821), con los caudillos del siglo xix y con la moderna república son los textos que nos presenta el autor en este artículo.The Venezuelan ecclesiastical historiography of the last fifty years (1965-2015) has focused on carrying out a profound inquiry into the consequences of Spain’s missions across the entire territory of Venezuela. This paper explains the results of this research concerning the relationships between the Church and the leaders of the independence movement (1810-1821), nineteenth-century political figures, and the modern Republic

Population Synthesis of Post-Common Envelope White-Dwarf-Main-Sequence Binaries in the Sloan Digital Sky Survey

Peer ReviewedPostprint (published version

Monte Carlo simulations of the post-common envelope white dwarf-main sequence binary population

Postprint (published version

The effects of the Observational Selection Criteria on the post common envelope white dwarf-main sequence binary population

We present a detailed Monte Carlo simulator of the Galactic population of binary stars. Preliminary results are presented for the white dwarf-main sequence (WD+MS) binary population resulting from a common envelope (CE) episode. We also study the effects of the observational selection criteria on different color-color diagrams, for different binding energy parameters, l , and common envelope efficiencies, aCE. Finally, we also compare our results with the identified population of white dwarf-main sequence binaries in the SDSSPeer ReviewedPostprint (published version

FIRI - a Far-Infrared Interferometer

Half of the energy ever emitted by stars and accreting objects comes to us in the FIR waveband and has yet to be properly explored. We propose a powerful Far-InfraRed Interferometer mission, FIRI, to carry out high-resolution imaging spectroscopy in the FIR. This key observational capability is essential to reveal how gas and dust evolve into stars and planets, how the first luminous objects in the Universe ignited, how galaxies formed, and when super-massive black holes grew. FIRI will disentangle the cosmic histories of star formation and accretion onto black holes and will trace the assembly and evolution of quiescent galaxies like our Milky Way. Perhaps most importantly, FIRI will observe all stages of planetary system formation and recognise Earth-like planets that may harbour life, via its ability to image the dust structures in planetary systems. It will thus address directly questions fundamental to our understanding of how the Universe has developed and evolved - the very questions posed by ESA's Cosmic Vision.Comment: Proposal developed by a large team of astronomers from Europe, USA and Canada and submitted to the European Space Agency as part of "Cosmic Vision 2015-2025

Valores antropométricos en niños con celiaquía diagnosticados precozmente

Peer Reviewe

Sistema único de preservación para muestras geológicas : Nucleoteca La Concepción, Venezuela

El sistema único de preservación para muestras geológicas en Venezuela es el resultado de estudios y experiencias propias practicadas en los últimos 30 años en la toma, manejo, preservación, estudio, almacenamiento, administración y custodio de muestras geológicas tanto de superficie como del subsuelo en PDVSA Exploración, formando parte fundamental del patrimonio de estado en las nucleotecas a escala nacional. El sistema permitirá estandarizar y homologar entre las empresas del estado la preservación y transferir a las empresas estatales de Sur y Centro América un sistema de cajas plásticas en polietileno de alta densidad resistente en el tiempo para lograr una óptima preservación de la fauna, flora y estructuras sedimentarias con capacidad de garantizar la permanencia dentro de los testigos sin alteración externa. La diversidad actual en las nucleotecas de materiales de preservación tales como fibra de madera de densidad media (MDF), plástico polipropileno cargado con talco, bolsas de tela y plásticas generó a través de los años la degradación de los materiales y por ende, problemas de rotulación, estado físico y preservación general de las muestras. Ésto, aunado a los altos costos operacionales en la toma de testigos para descubrir nuevos yacimientos, hacen necesario mantener inalterable el estado natural de la litología presente, lo cual es garantizado por un sistema único y estándar en el custodio de las muestras geológicas.Sesiones libresFacultad de Ciencias Naturales y Muse