128 research outputs found

    La policía comunitaria como estrategia para la disminución de los índices delictivos: el caso emblemático del cerro El Pino.

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    En los últimos años se ha incrementado el índice delictivo a nivel nacional, sobre todo en Lima y Callao, especialmente los delitos contra el patrimonio. Es evidente que el problema de la inseguridad se hace más latente en los barrios urbanos marginales, ya que en estos suelen camuflarse los delincuentes, al considerarse algunas de estas zonas, como “tierra de nadie”. Esta situación se vivía, por ejemplo, en el Asentamiento Humano – AA. HH cerro “El Pino”, jurisdicción de la comisaria PNP de Yerbateros, lugar habitado por 25.000 personas de escasos recursos, muchos de ellos trabajadores de “La Parada”, ambulantes y también personas al margen de la ley.Tesi

    Detection of growth-related QTLs in turbot (Scophtalmus maximux)

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    Background The turbot (Scophthalmus maximus) is a highly appreciated European aquaculture species. Growth related traits constitute the main goal of the ongoing genetic breeding programs of this species. The recent construction of a consensus linkage map in this species has allowed the selection of a panel of 100 homogeneously distributed markers covering the 26 linkage groups (LG) suitable for QTL search. In this study we addressed the detection of QTL with effect on body weight, length and Fulton's condition factor. Results Eight families from two genetic breeding programs comprising 814 individuals were used to search for growth related QTL using the panel of microsatellites available for QTL screening. Two different approaches, maximum likelihood and regression interval mapping, were used in order to search for QTL. Up to eleven significant QTL were detected with both methods in at least one family: four for weight on LGs 5, 14, 15 and 16; five for length on LGs 5, 6, 12, 14 and 15; and two for Fulton's condition factor on LGs 3 and 16. In these LGs an association analysis was performed to ascertain the microsatellite marker with the highest apparent effect on the trait, in order to test the possibility of using them for marker assisted selection. Conclusions The use of regression interval mapping and maximum likelihood methods for QTL detection provided consistent results in many cases, although the high variation observed for traits mean among families made it difficult to evaluate QTL effects. Finer mapping of detected QTL, looking for tightly linked markers to the causative mutation, and comparative genomics are suggested to deepen in the analysis of QTL in turbot so they can be applied in marker assisted selection programs

    Flue gas adsorption by single-wall carbon nanotubes: A Monte Carlo study

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    Adsorption of flue gases by single-wall carbon nanotubes (SWCNT) has been studied by means of Monte Carlo simulations. The flue gas is modeled as a ternary mixture of N2, CO2, and O2, emulating realistic compositions of the emissions from power plants. The adsorbed flue gas is in equilibrium with a bulk gas characterized by temperature T, pressure p, and mixture composition.We have considered different SWCNTs with different chiralities and diameters in a range between 7 and 20 Å. Our results show that the CO2 adsorption properties depend mainly on the bulk flue gas thermodynamic conditions and the SWCNT diameter. Narrow SWCNTs with diameter around 7 Å show high CO2 adsorption capacity and selectivity, but they decrease abruptly as the SWCNT diameter is increased. For wide SWCNT, CO2 adsorption capacity and selectivity, much smaller in value than for the narrow case, decrease mildly with the SWCNT diameter. In the intermediate range of SWCNT diameters, the CO2 adsorption properties may show a peculiar behavior, which depend strongly on the bulk flue gas conditions. Thus, for high bulk CO2 concentrations and low temperatures, the CO2 adsorption capacity remains high in a wide range of SWCNT diameters, although the corresponding selectivity is moderate.We correlate these findings with the microscopic structure of the adsorbed gas inside the SWCNTs.Peer reviewe

    Flue gas adsorption by single-wall carbon nanotubes: A Monte Carlo study

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    Adsorption of flue gases by single-wall carbon nanotubes (SWCNT) has been studied by means of Monte Carlo simulations. The flue gas is modeled as a ternary mixture of N2, CO2, and O2, emulating realistic compositions of the emissions from power plants. The adsorbed flue gas is in equilibrium with a bulk gas characterized by temperature T , pressure p, and mixture composition. We have consid- ered different SWCNTs with different chiralities and diameters in a range between 7 and 20 Å. Our results show that the CO2 adsorption properties depend mainly on the bulk flue gas thermodynamic conditions and the SWCNT diameter. Narrow SWCNTs with diameter around 7 Å show high CO2 adsorption capacity and selectivity, but they decrease abruptly as the SWCNT diameter is increased. For wide SWCNT, CO2 adsorption capacity and selectivity, much smaller in value than for the narrow case, decrease mildly with the SWCNT diameter. In the intermediate range of SWCNT diameters, the CO2 adsorption properties may show a peculiar behavior, which depend strongly on the bulk flue gas conditions. Thus, for high bulk CO2 concentrations and low temperatures, the CO2 adsorption capacity remains high in a wide range of SWCNT diameters, although the corresponding selectivity is moderate. We correlate these findings with the microscopic structure of the adsorbed gas inside the SWCNTs.Ministerio de Economía y Competitividad MAT2013-42934-R y FIS2012-3245

    Estrategia discursiva anti statu quo en la transformación del sistema de partidos en tres países de América Latina

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    En la década de los noventa América Latina enfrentó una profunda crisissocial, en gran medida, derivada de la adopción del modelo económicoque proponía el consenso de Washington. Estos ajustes se aplicaron enun breve lapso de tiempo y sin considerar variaciones de acuerdo a lascondiciones socioeconómicas propias de cada país. El esquema económico—novedoso en esa época— transformó el panorama de jerarquíassociales y la forma en que el estado mediaba y articulaba los distintos intereses.Estas transformaciones estructurales profundizaron algunos delos clivajes históricamente presentes y configuraron otros nuevos. Nuestro trabajo busca explorar la forma en que los clivajes fueron adoptados discursivamente dentro de lo que hemos definido como estrategia anti statu quo. En dicha estrategia agrupamos las categorías: 1) antiestablishment, 2) rupturista, 3) populista y 4) outsider táctico, mismas que serán analizadas en los discursos de Hugo Chávez, Rafael Correa y Evo Morales. Paralelo al análisis del discurso hemos considerado los indicadoresde volatilidad electoral y número efectivo de partidos a fin de advertirlos cambios experimentados dentro del sistema de partidos. Dado que setrata de un estudio de pocos casos no podemos inferir implicaciones decausalidad entre la estrategia discursiva anti statu quo y la transformacióndel sistema de partidos. Analizar descriptivamente estas variablesdentro de un mismo contexto temporal y espacial nos permite contrastaren estos tres supuestos algunas de las aproximaciones teóricas (Lipstet yRokkan 1967, Ware 2004) que explican la transformación del sistema departidos a partir de la estructura de clivajes y del potencial de los liderazgosopositores para explotarlos discursivamente.  

    Detection of growth-related QTL in turbot (Scophthalmus maximus)

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    <p>Abstract</p> <p>Background</p> <p>The turbot (<it>Scophthalmus maximus</it>) is a highly appreciated European aquaculture species. Growth related traits constitute the main goal of the ongoing genetic breeding programs of this species. The recent construction of a consensus linkage map in this species has allowed the selection of a panel of 100 homogeneously distributed markers covering the 26 linkage groups (LG) suitable for QTL search. In this study we addressed the detection of QTL with effect on body weight, length and Fulton's condition factor.</p> <p>Results</p> <p>Eight families from two genetic breeding programs comprising 814 individuals were used to search for growth related QTL using the panel of microsatellites available for QTL screening. Two different approaches, maximum likelihood and regression interval mapping, were used in order to search for QTL. Up to eleven significant QTL were detected with both methods in at least one family: four for weight on LGs 5, 14, 15 and 16; five for length on LGs 5, 6, 12, 14 and 15; and two for Fulton's condition factor on LGs 3 and 16. In these LGs an association analysis was performed to ascertain the microsatellite marker with the highest apparent effect on the trait, in order to test the possibility of using them for marker assisted selection.</p> <p>Conclusions</p> <p>The use of regression interval mapping and maximum likelihood methods for QTL detection provided consistent results in many cases, although the high variation observed for traits mean among families made it difficult to evaluate QTL effects. Finer mapping of detected QTL, looking for tightly linked markers to the causative mutation, and comparative genomics are suggested to deepen in the analysis of QTL in turbot so they can be applied in marker assisted selection programs.</p

    DFT Study of the Addition Of SO2 to 1,3- Butadiene and Derivatives

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    The 9th International Electronic Conference on Synthetic Organic Chemistry session Computational ChemistryAddition reactions of SO2 to 1,3-butadiene and heteroderivatives were studied by performing density functional theory (DFT) calculations together with the 6311+G* basis set. Reactants, products, and transition states for each reaction were localized and the IRC connecting reactants and products was also obtained. Magnetic properties were evaluated along the reaction path to elucidate the characteristics of the reactions studied with respect to their aromaticity and pericyclic character. The addition can proceed by means of a cheletropic reaction giving a fivemembered cycle as a product or via a cycloaddition resulting on a sixmembered cycle. The results thus obtained indicate that for most reactions studied the energy barrier is smaller for the cycloaddition process, whereas the most stable product comes from cheletropic reaction. From the analysis of the magnetic properties along the reaction path, all reactions exhibit aromaticity enhancement near the transition state and, therefore, show pericyclic characte

    El debate contramayoritario. Aproximaciones teóricas en Estados Unidos e Hispanoamérica

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    The object of this work is to present a theoretical survey of the main arguments in favor of and against judicial review. Analysis of the scope of, and substantial differences between, these two positions may contribute to understanding and contemplation of approaches that revalue and affirm democratic principles, but also of those based on the pre-eminence of basic rights and the protection of these as the corner-stone of any democratic order. We look at some contributions of political science to this discussion, through democratic theory, as well as positions which address the politicization of justice. We consider that analysis through these approaches enriches understanding of the debate, given that legal doctrine regarding judicial interpretation is contrasted with scopes of the democratic principles of legitimacy and republicanism  El trabajo tiene como objetivo realizar un recorrido teórico en torno a los principales argumentos a favor y en contra de la revisión judicial. Analizar los alcances y las diferencias sustanciales entre ambos debates puede contribuir a la comprensión del tema, considerando las aproximaciones que reivindican los principios democráticos, pero también de aquellas que se sustentan en la preminencia de los derechos fundamentales y su salvaguarda como piedra angular de un orden democrático. Nuestro trabajo también considera algunos de los aportes que ha hecho la ciencia política a este debate a través de la teoría democrática y los posicionamientos que abordan el tema de la politización de la justicia. Consideramos que abordar el análisis desde estos enfoques enriquece la comprensión de esta discusión, toda vez que la doctrina jurídica en torno a la interpretación judicial, es contrastada con los alcances de los principios democráticos de legitimidad y republicanismo 

    Neumonía asociada a ventilación mecánica por microorganismo gram positivo

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    Neumonía asociada a ventilación mecánica por microorganismo gram positivo Las bacterias Gram+ han sido una causa frecuente de NAV El diagnóstico se ha producido con mayor frecuencia de forma temprana tras la intubación No hemos hallado diferencias significativas referidas a edad, alteracionares radiología o mortalidad entre la NAV gram+ y la causada por otros gérmenesComunicación póster presentado en: XXXV Congreso Nacional Sociedad Española de Neumología y Cirugía Torácica (SEPAR). Maspalomas (Gran Canaria) el 8, 9, 10 y 11 de junio de 2002
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