La renovación de la palabra en el bicentenario de la Argentina : los colores de la mirada lingüística

El libro reúne trabajos en los que se exponen resultados de investigaciones presentadas por investigadores de Argentina, Chile, Brasil, España, Italia y Alemania en el XII Congreso de la Sociedad Argentina de Lingüística (SAL), Bicentenario: la renovación de la palabra, realizado en Mendoza, Argentina, entre el 6 y el 9 de abril de 2010. Las temáticas abordadas en los 167 capítulos muestran las grandes líneas de investigación que se desarrollan fundamentalmente en nuestro país, pero también en los otros países mencionados arriba, y señalan además las áreas que recién se inician, con poca tradición en nuestro país y que deberían fomentarse. Los trabajos aquí publicados se enmarcan dentro de las siguientes disciplinas y/o campos de investigación: Fonología, Sintaxis, Semántica y Pragmática, Lingüística Cognitiva, Análisis del Discurso, Psicolingüística, Adquisición de la Lengua, Sociolingüística y Dialectología, Didáctica de la lengua, Lingüística Aplicada, Lingüística Computacional, Historia de la Lengua y la Lingüística, Lenguas Aborígenes, Filosofía del Lenguaje, Lexicología y Terminología

19S: la lucha por una reconstrucción justa, digna y segura. Una respuesta organizada frente a la política pública en materia de reconstrucción urbana postsísmica en la Ciudad de México

This article presents ethnography of the political process that took place within the framework of the humanitarian emergency and social mobilization, mediated by the earthquake that occurred on September 19, 2017 in Mexico. Public policy around the earthquake led to the social struggle that the affected population undertook, who during their mobilizations built a language of protest to communicate their position and perspective in response to the Reconstruction Program proposed by the Government of Mexico City.Este artigo apresenta a etnografia do processo político que ocorreu no âmbito da emergência humanitária e da mobilização social, mediada pelo terremoto ocorrido em 19 de setembro de 2017 no México. As políticas públicas em torno do terremoto levaram à luta social empreendida pela população afetada, que durante suas mobilizações construíram uma linguagem do protesto para comunicar sua posição e perspectiva frente ao Programa de reconstrução proposto pelo Governo da Cidade do México.En este artículo se presenta la etnografía del proceso político ocurrido en el marco de la emergencia humanitaria y la movilización social, mediado por el sismo ocurrido el 19 de septiembre de 2017 en México. La política pública en torno al terremoto propició la lucha popular que emprendió la población afectada, quienes durante sus movilizaciones construyeron un lenguaje de la protesta para comunicar su posición y perspectiva frente al Programa para la Reconstrucción propuesto por el Gobierno de la Ciudad de México

19S: la lucha por una reconstrucción justa, digna y segura

En este artículo se presenta la etnografía del proceso político ocurrido en el marco de la emergencia humanitaria y la movilización social, mediado por el sismo ocurrido el 19 de septiembre de 2017 en México. La política pública en torno al terremoto propició la lucha popular que emprendió la población afectada, quienes durante sus movilizaciones construyeron un lenguaje de la protesta para comunicar su posición y perspectiva frente al Programa para la Reconstrucción propuesto por el Gobierno de la Ciudad de México

Fast photodegradation of Orange II azo dye under visible light irradiation using a semiconducting n-p heterojunction of ZnO nanoparticles/polypyrrole as catalyst

Preparation of innovative nano- and microstructured heterojunctions consisting of two semiconductors for highly efficient p–n photocatalysts has been of growing interest due to their advanced applications. n-type ZnO nanoparticles were synthesized by a simple precipitation method from ZnCl2 and NaOH and coated with semiconducting p-type polypyrrole (PPy) nanospheres by chemical oxidation in the presence of sodium dodecyl sulfate (SDS) as surfactant, obtaining a n-p type ZnO/PPy composite. The composite was characterized by scanning electron microscopy (SEM), FTIR and UV/Vis–NIR spectroscopies, and thermogravimetric analysis (TGA). It was observed that composite consisted of ZnO nanoparticles with rice-like morphology of sizes in the range of 180–600 nm long and between 70 and 227 nm wide, which were well dispersed into a matrix made of agglomerated spherical nanoparticles of PPy. The composite was tested as photocatalyst in the degradation of Orange II azo dye using visible light irradiation at different initial dye concentrations, catalyst loading, initial pH, and in the presence of hole and radical scavengers. Photodegradation efficiencies after 30 min of reaction in the range of 90.9–100% and fast photodegradation rates depending on the initial dye concentration and catalyst load were observed. The best photodegradation efficiency was observed at acidic pH, which was ascribed to an improved electrostatic interaction of dissociated dye molecules with the positively charged surface of photocatalyst. It was demonstrated that ·O2- and other ROS are the main reactive species formed via reaction between O2 and photogenerated electrons, following a pseudo-first order of reaction.Fil: Escobar-Villanueva, Alondra G.. Universidad Autonoma de San Luis Potosi; MéxicoFil: Ovando-Medina, Víctor M.. Universidad Autonoma de San Luis Potosi; MéxicoFil: Martínez-Gutiérrez, Hugo. INSTITUTO POLITÉCNICO NACIONAL (IPN);Fil: Militello, María Paula. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Tecnologías Energéticas y Materiales Avanzados; Argentin

Compilación de Proyectos de Investigacion de 1984-2002

Instituto Politecnico Nacional. UPIICS

Contemporary use of cefazolin for MSSA infective endocarditis: analysis of a national prospective cohort

Objectives: This study aimed to assess the real use of cefazolin for methicillin-susceptible Staphylococcus aureus (MSSA) infective endocarditis (IE) in the Spanish National Endocarditis Database (GAMES) and to compare it with antistaphylococcal penicillin (ASP). Methods: Prospective cohort study with retrospective analysis of a cohort of MSSA IE treated with cloxacillin and/or cefazolin. Outcomes assessed were relapse; intra-hospital, overall, and endocarditis-related mortality; and adverse events. Risk of renal toxicity with each treatment was evaluated separately. Results: We included 631 IE episodes caused by MSSA treated with cloxacillin and/or cefazolin. Antibiotic treatment was cloxacillin, cefazolin, or both in 537 (85%), 57 (9%), and 37 (6%) episodes, respectively. Patients treated with cefazolin had significantly higher rates of comorbidities (median Charlson Index 7, P <0.01) and previous renal failure (57.9%, P <0.01). Patients treated with cloxacillin presented higher rates of septic shock (25%, P = 0.033) and new-onset or worsening renal failure (47.3%, P = 0.024) with significantly higher rates of in-hospital mortality (38.5%, P = 0.017). One-year IE-related mortality and rate of relapses were similar between treatment groups. None of the treatments were identified as risk or protective factors. Conclusion: Our results suggest that cefazolin is a valuable option for the treatment of MSSA IE, without differences in 1-year mortality or relapses compared with cloxacillin, and might be considered equally effective