2958 research outputs found
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Perfil psicológico del hombre condenado a prisión por violencia de género
No full textEste proyecto está siendo financiado por el Ministerio de Economía y Competitividad (MINECO-13-FEM2012-30659). Además, ha sido subvencionado a través del Programa “Severo Ochoa” de ayudas predoctorales para la formación e investigación y docencia del Principado de Asturias (BP13134). En la actualidad, está siendo subvencionado por el Ministerio de Educación, Cultura y Deporte a través de las ayudas para contratos predoctorales para la Formación de Profesorado universitario (subprogramas de Formación y Movilidad dentro del Programa Estatal de Promoción del Talento y su Empleabilidad) (FPU 13/04310).IV Jornadas doctorales del grupo 9 de Universidades (G-9
Zinc-catalyzed multicomponent reactions: Straightforward synthesis of functionalized furan derivatives
Get PDFEn el póster se describe la generación de ciclopropilfuranos y sililfuranos mediante metodologías multicomponente.A sequence consisting of an initial zinc-catalyzed Knoevenagel condensation of and forms enynone. Then a 5-exo-dig cyclization takes place to give rise to 2-furyl-zinc carbene intermediate. A final cyclopropanation reaction or insertion into the Si-H bond would account for the formation of the final productsXXVI Bienal Reunion of Organic Chemistr
Gold(I) operational in synergistic catalysis for the intermolecular α-addition reaction of aldehydes across allenamides
Get PDFAsymmetric organocatalysis is well stablished as a powerful tool to promote chemical transformations with good yields and enantioselectivities. For years, gold(I) has been
extensively used for the activation of unsaturated compounds toward different nucleophiles. These two strategies can be combined in a synergistic manner to afford new
chemical transformations.
Herein we report the synergistic combination of gold(I) catalysis with L-proline and L-proline-derived organocatalysts to activate both aldehydes and allenamides respectively.
With this strategy we were able to build all-carbon quaternary stereocenters with moderate yield and enantioselectivity. In some cases certain additives were necessary to
modulate the selectivity.XXVI Reunión Bienal de Química Orgánic
Peroxo method for the preparation of photocatalytically active titania spheres for emerging micropollutant degradation
Get PDFThe proposed method for preparation of titania spherical particles proves to be the promising alternative to the widespread template and alkoxide-based procedures. It has been shown that the porosity of TiO2 spheres can be easily controlled by manipulating the synthetic conditions (e.g. solvent, thermal treatment technique, calcination temperature). The photodegradation of the commonly used fragrance MPET goes through the formation of toxic p-cresol, but both the substrate and undesirable intermediates are completely decomposed by the commercial P25 and the photocatalysts prepared by the proposed peroxo method. The titania spheres exhibit high photocatalytic activity and demonstrated good recyclability, making their utilization preferable to the unrecoverable commercial TiO2 nanoparticles.XIV Congreso Nacional de Materiale
Distribución con Nano-Redes de Corriente Continua en el Hogar
Get PDFEste trabajo se ha realizado mediante la financiación del Gobierno de España a través de los proyectos DPI2013-47176-C2-2-R y DPI2013-47176-C2-1-R y las becas FPI BES-2014-070785 y BES-2014-068096 y mediante la financiación del Gobierno del Principado de Asturias a través del proyecto FC-15-GRUPIN14-143, la beca “Severo Ochoa”BP14-085” y los fondos FEDER.Seminario Anual de Automática y Electrónica Industrial (SAAEI) 2016Los grandes cambios en las tecnologías disponibles, la evolución producida en el uso de la energía eléctrica y la mayor concienciación con el medio ambiente, han llevado a plantearse nuevas formas más eficientes de distribución de la energía eléctrica. Los hogares son un gran consumidor de energía, debido a un creciente número de electrodomésticos y dispositivos de entretenimiento, por lo que son un objetivo atractivo en el que buscar un cambio de modelo de distribución. Cuando el número de elementos conectados a la red eléctrica se vuelve insostenible, resulta lógico pensar en entidades de menor tamaño que sirvan como sub-redes o compartimentos, y que permitan un control distribuido de la red de distribución. Este cambio de paradigma, junto con el uso de convertidores como interfaz entre las sub-redes y la creciente disponibilidad de generación y almacenamiento eléctrico distribuidos, hacen atractiva la distribución en corriente continua como una posibilidad para mejorar la calidad del suministro y la eficiencia energética de nuestros hogares
Aplicaciones de Información Geográfica: Qgis Nivel Básico
Get PDFMaterial didácticoManual de aprendizaje empleado en el curso de QGIS Básico impartido por el autor
Gold-Catalyzed Intermolecular Formal (3+2) Cycloaddition of Stabilized Vinyldiazo Derivatives and Electronically Unbiased Allenes
Get PDFThe reaction of electronically unbiased allenes with alkenyldiazo
compounds in the presence of gold catalysts provided
alkylidenecyclopentene derivatives resulting from a formal
intermolecular (3+2) carbocyclization. A stepwise mechanism
involving initial activation of the diazo component and subsequent
formation of an allyl cation intermediate has been proposed. This
process represents the first intermolecular gold-catalyzed
cycloaddition involving non-activated allenes
Atención centrada en la persona en residencias de personas mayores españolas. Algunas opiniones de sus directores/as y profesionales. Informes acpgerontologia, Nº 4.
No full textInforme que recoge las opiniones de directores/as de residencias y centros de día española sobre la atención dispensada en los servicios desde el enfoque atención centrada en la persona y variables asociadas a su implementación
Evaluation of the potential of different high calorific waste fractions for the preparation of solid recovered fuels
Get PDFSolid recovered fuels constitute a valuable alternative for the management of those non-hazardous waste fractions that cannot be recycled. The main purpose of this research is to assess the suitability of three different wastes from the landfill of the local waste management company (COGERSA), to be used as solid recovered fuels in a cement kiln near their facilities. The wastes analyzed were: End of life vehicles waste, packaging and bulky wastes. The study was carried out in two different periods of the year: November 2013 and April 2014. In order to characterize and classify these wastes as solid recovered fuels, they were separated into homogeneous fractions in order to determine different element components, such as plastics, cellulosic materials, packagings or textile compounds, and the elemental analysis (including chlorine content), heavy metal content and the heating value of each fraction were determined. The lower heating value of the waste fractions on wet basis varies between 10 MJ kg−1 and 42 MJ kg−1. One of the packaging wastes presents a very high chlorine content (6.3 wt.%) due to the presence of polyvinylchloride from pipe fragments, being the other wastes below the established limits. Most of the wastes analyzed meet the heavy metals restrictions, except the fine fraction of the end of life vehicles waste. In addition, none of the wastes exceed the mercury limit content, which is one of the parameters considered for the solid recovered fuels classification. A comparison among the experimental higher heating values and empirical models that predict the heating value from the elemental analysis data was carried out. Finally, from the three wastes measured, the fine fraction of the end of life vehicles waste was discarded for its use as solid recovered fuels due to the lower heating value and its high heavy metals content. From the point of view of the heating value, the end of life vehicles waste was the most suitable residue with a lower heating value of 35.89 MJ kg−1, followed by the packaging waste and the bulky waste, respectively. When mixing the wastes studied a global waste was obtained, whose classification as solid recovered fuels was NCV 1 Cl 3 Hg 3. From the empirical models used for calculating higher heating value from elemental content, Scheurer–Kestner was the model that best fit the experimental data corresponding to the wastes collected in November 2013, whereas Chang equation was the most approximate to the experimental heating values for April 2014 fractions. This difference is due to higher chlorine content of the second batch of wastes, since Chang equation is the only one that incorporates the chlorine content