Isotope Labelling for Reaction Mechanism Analysis in DBD Plasma Processes

Dielectric barrier discharge (DBD) plasmas and plasma catalysis are becoming an alternative procedure to activate various gas phase reactions. A low-temperature and normal operating pressure are the main advantages of these processes, but a limited energy efficiency and little selectivity control hinder their practical implementation. In this work, we propose the use of isotope labelling to retrieve information about the intermediate reactions that may intervene during the DBD processes contributing to a decrease in their energy efficiency. The results are shown for the wet reforming reaction of methane, using D2O instead of H2O as reactant, and for the ammonia synthesis, using NH3/D2/N2 mixtures. In the two cases, it was found that a significant amount of outlet gas molecules, either reactants or products, have deuterium in their structure (e.g., HD for hydrogen, CDxHy for methane, or NDxHy for ammonia). From the analysis of the evolution of the labelled molecules as a function of power, useful information has been obtained about the exchange events of H by D atoms (or vice versa) between the plasma intermediate species. An evaluation of the number of these events revealed a significant progression with the plasma power, a tendency that is recognized to be detrimental for the energy efficiency of reactant to product transformation. The labelling technique is proposed as a useful approach for the analysis of plasma reaction mechanisms

Doblaje y subtitulado de mexicanismos en el lenguaje cinematográfico: una perspectiva mexicana

Los "mexicanismos" son expresiones del castellano utilizadas cotidianamente por el mexicano. ¿Qué pasa cuando estas aparecen en las películas y se traducen a otro idioma? ¿Es posible contextualizar, a través del proceso de doblaje y subtitulado, las expresiones lingüísticas propias de un país sin que estas pierdan su significado original? El objetivo de este estudio cualitativo fue analizar el doblaje de películas del cine mexicano llevado al extranjero, y el subtitulado en películas del cine norteamericano que se proyectan en México. Se encontró, entre otros resultados que en el proceso, el idioma pierde su sentido original aunque las referencias culturales del país destino se adaptan en la traducción."Mexicanismos" are expressions used daily by Mexicans. What happens when they appear in movies and are translated into another language? Is it posible to contextualize through the dubbing process, linguistic expressions peculiar to a country without losing their original meaning? The purpose of this qualitative study was to analyze the dubbing of Mexican cinema taken abroad, and subtitling in films of American cinema that is shown in Mexico. It was found, among other results, that in the process, the language loses its original meaning but the destination country's cultural references are adapted in translation

Neumonía trombopenia y afectación hepática en un caso de fiebre Q aguda

PneumoniaFebr

2D-Coordination polymers based on 1H-indazole4-carboxylic acid and transition metal ions: magnetic, luminescence and biological properties

We report the formation of five novel multifunctional coordination polymers based on 1H-indazole-4- carboxylic acid (HL). To the best of our knowledge, these complexes are the first examples of coordination compounds constructed with this interesting ligand. These materials were synthesized by solvothermal routes, possess different 2D-structures and show interesting magnetic properties due to the copper compound showing an unusual spin-canted effect while the anisotropic cobalt material behaves as a fieldinduced single molecule magnet. MTT assays performed on human embryonic kidney (HEK293) and mouse skin melanoma (B16-F10) cell lines indicated that the Cd-based compound was the only one exhibiting dose-dependent toxicity on B16-F10 cells, most likely due to the release of toxic Cd(II). Cadmium and zinc polymers exhibit interesting luminescence properties. The fact that zinc polymers did not exhibit inherent toxicity against both cancer and non-cancerous cells make this new family an excellent candidate for further investigation in the field of luminescent materials with biomedical applications.Junta de Andalucia FQM-394 FQM-1484Red Guipuzcoana de Ciencia, Tecnologia e Innovacion OF218/2018University of Basque Country GIU 17/13Basque Government IT1005-16Spanish Ministry of Science, Innovation and Universities (MCIU/AEI/FEDER, UE) PGC2018-102052-A-C22 PGC2018-102052-B-C21Junta de Andalucia FQM-394 FQM-1484European Union (EU)ESFGovernment of the Basque CountryFEDER/MCIU/AEI RYC-2016-21042 JdC-201

Blue-green to near-IR switching electroluminescence from Si-rich silicon oxide/nitride bilayer structures

Blue green to near-IR switching electroluminescence (EL) has been achieved in a metal-oxide-semiconductor light emitting device, where the dielectric has been replaced by a Si-rich silicon oxide/nitride bilayer structure. To form Si nanostructures, the layers were implanted with Si ions at high energy, resulting in a Si excess of 19%, and subsequently annealed at 1000 °C. Transmission electron microscopy and EL studies allowed ascribing the blue-green emission to the Si nitride related defects and the near-IR band with the emission of the Si-nanoclusters embedded into the SiO2 layer. Charge transport analysis is reported and allows for identifying the origin of this twowavelength switching effect

Cuestionario de agresión reactiva y proactiva : un instrumento de medida de la agresión en adolescentes

The psychometrical characteristics of the Reactive-Proactive Aggression Questionnaire (RPQ), designed by Raine et al. (2006), was examined in this work. When applied to a sample of 732 adolescents from Madrid (360 males and 372 females), the confirmatory factor analysis showed that the bifactorial structural model fitted the data better than the unifactorial model. On the other hand, statistically significant differences were observed in both types of aggression according to sex and age of participants. Males showed higher levels of proactive aggression than females, whereas in all the analyzed age groups, reactive was significantly higher than proactive aggression in men as well as in women. The results obtained in this study suggest that this instrument measures two functional types of aggression associated to different processes and motivational mechanisms in a reliable and valid way.En este trabajo se examinan las propiedades psicométricas del Cuestionario de Agresión Reactiva-Proactiva (RPQ; Reactive-Proactive Aggression Questionnaire), elaborado por Raine et al. (2006). En su aplicación a una muestra de 732 adolescentes de la Comunidad de Madrid (360 varones y 372 mujeres), el análisis factorial confirmatorio reveló que el modelo estructural bifactorial presenta un mejor ajuste a los datos que el modelo estructural unifactorial. Por otra parte, se observaron diferencias estadísticamente significativas en ambos tipos de agresión en función del sexo y la edad de los participantes. Los hombres presentaron mayores niveles de agresión proactiva que las mujeres; mientras que en todos los grupos de edad analizados la agresión reactiva fue significativamente mayor que la proactiva tanto en hombres como en mujeres. Los resultados obtenidos en este estudio sugieren que este instrumento mide de forma fiable y válida dos tipos funcionales de agresión asociados a diferentes procesos y mecanismos motivacionales

Investigación cinética de la oxidación térmica de sulfuros mixtos de níquel y cobalto

La precipitación de sulfuros mixtos de Ni y Co constituye una de las etapas del proceso tecnológico carbonato- amoniacal en la industria niquelera Ernesto Guevara, ubicada en Moa; sin embargo, la rápida oxidación de estos sulfuros al entrar en contacto con el aire dificulta su almacenamiento y transportación. Se exponen los resultados de la caracterización química, por difracción de Rayos X y análisis mineragráfico de los sulfuros mixtos, y de la investigación cinética de la oxidación térmica de las muestras a régimen isotérmico y no isotérmico. Se determina el modelo más probable y los parámetros cinéticos de las transformaciones físico-químicas que tienen lugar en el proceso de oxidación. Se concluye que la oxidación del concentrado del sulfuro mixto sigue las etapas siguientes: eliminación de agua y amoniaco, degradación de los sulfuros superiores, formación de los sulfatos y la degradación de los sulfatos hasta óxidos. La degradación de los sulfuros hasta óxidos ocurre mediante el modelo de crecimiento bidimensional G1, siendo la etapa limitante la velocidad de difusión de los productos gaseosos a través de la capa de óxido en formación