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Se encontraron 2733 resultados en recursos

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Lejos de tí [Recurso electrónico] : bambuco / Pedro Morales Pino

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Cumbia de Barranquilla [Recurso electrónico] / Emilio Murillo

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Don Quijote [Recurso electrónico] : pasillo para piano / Emilio Murillo

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Ecos del desierto [Recurso electrónico] : pasillo / Ismael Posada Posada

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Genta [Recurso electrónico] : danza / Pedro Morales Pino

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Imagen de apoyo de  Immunoidentification of Trypanosoma cruzi antigens using sera from chronically infected patients = Inmunoidentificación de los antígenos de Tripanosoma cruzi usando muestras de pacientes crónicamente infectados

Immunoidentification of Trypanosoma cruzi antigens using sera from chronically infected patients = Inmunoidentificación de los antígenos de Tripanosoma cruzi usando muestras de pacientes crónicamente infectados

Por: Hiliana Patricia Aristizábal Pineda | Fecha: 2015

This study analyzed immune reactivity of sera from chronic Chagasic patients living in Europe, using two available commercial ELISA kits (ORTHO® T. cruzi ELISA Test System and REM® Gold ELISA T. cruzi IgG), and in-house ELISA anti T. cruzi IgG which was optimized in this study. After carrying out ELISA for the detection of anti-T. cruzi antibodies, the most reactive sera (n=15), the least reactive sera (n=13), and negative controls (n=7) were tested to find the most reactive T. cruzi proteins using an immunoblotting assay. Four groups of proteins based on their molecular weight were identified as the predominant immunogenic antigens for chronic Chagas disease. From these groups the most reactive antigens were proteins with molecular weights of between 40 kDa and 50 kDa and also proteins with 80 kDa. These proteins can be purified by immunoproteomic analysis and also it is important to test them for cross-reaction with Leishmania spp in order to develop a more sensitive and specific diagnostic test, particularly for the chronic stage of the disease. Additionally, they can be developed for use in future vaccines. 
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
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  • Medicina

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Immunoidentification of Trypanosoma cruzi antigens using sera from chronically infected patients = Inmunoidentificación de los antígenos de Tripanosoma cruzi usando muestras de pacientes crónicamente infectados

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Imagen de apoyo de  The gaps in rural social protection in Colombia: a history of traps and disconnections = Las brechas en la protección social rural en Colombia: una historia de trampas y desconexiones

The gaps in rural social protection in Colombia: a history of traps and disconnections = Las brechas en la protección social rural en Colombia: una historia de trampas y desconexiones

Por: María Alejandra Botiva León | Fecha: 2011

The persistency of rural poverty along with a widened gap between urban and rural areas, darken the picture of progress in Colombia. This dissertation analyses the state of social protection in rural areas, paying attention to the different instruments available to the government in order to find out whether rural dwellers have effective protection tools against shocks. Using different diagnoses on the determinants of rural poverty, this work identifies the limited scope of the actual social protection system in addressing the many different sources of vulnerability that rural inhabitants have to face in Colombia. In addition, there is a lack of comprehensive rural development strategy to complement the operation of the social protection system in rural settings.  
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
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The gaps in rural social protection in Colombia: a history of traps and disconnections = Las brechas en la protección social rural en Colombia: una historia de trampas y desconexiones

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Imagen de apoyo de  Preferential tariffs and export diversification: the G3 Free Trade Agreement case

Preferential tariffs and export diversification: the G3 Free Trade Agreement case

Por: Nelson Fabián Villarreal Rincón | Fecha: 2012

Exports concentration in a reduced number of economic sectors has been always a concern for trade policy makers, mostly in developing countries. According to the economic theory and some recent empirical evidence, market access in international trade is improved through free trade agreements and preferential tariff rate programs which could affect positively export diversification. Following a similar approach used by Debaere and Mostashari (2005) and Volpe and Gómez (2007), this paper estimates the effects on Colombia’s export diversification induced by the lower tariffs offered by Mexico and the broader preference margin vis-à-vis third countries in the Mexican market derived from the G3 Free Trade Agreement (FTA). For this purpose, dynamic Probit and dynamic Poisson models are estimated using an unbalanced panel data available from 1995 –year when the G3 FTA entry into force– to 2010, the latest year available. Moreover, this paper also attempts to estimate the effects of Venezuela’s withdrawal from G3 in 2006 and the effects of the bilateral crisis between Colombia and Venezuela in the second half of 2000s. In general, results show that lower tariffs faced by Colombian products in Mexico are associated with higher export diversification but this impact is sensitive to the economic cycle and a negative impact on diversification can arise depending on the specification of the model. Also, broader preferential margins in Mexico induce higher export diversification for Colombian products. However, there exists a strong dependence of export diversification in Colombia on the initial conditions and the past of the export portfolio offered to Mexico. On the other hand, Venezuela’s withdrawal from G3 FTA in 2006 had no effect on export diversification from Colombia to Mexico meanwhile the bilateral crisis showed –in some specifications– positive effects on the export diversification to Mexico, the latter revealing a trade deviation pattern. Macroeconomic control variables –including the real exchange rate– showed to be irrelevant to the model.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
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  • Economía

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Preferential tariffs and export diversification: the G3 Free Trade Agreement case

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Imagen de apoyo de  The pedagogy of the birds – instinct + practice = La pedagogía de los pájaros – instinto + práctica

The pedagogy of the birds – instinct + practice = La pedagogía de los pájaros – instinto + práctica

Por: Jessica Rucinque Arbeláez | Fecha: 2013

The pedagogy of the birds’ is a cultural initiative, consisting of four creative collaborative actions, which seeks to develop conversations between the inhabitants of Brisas del Volador, a whole community living in extreme poverty in the south part of Bogotá, the Colombian capital, and [with] the society in which they live; with the intention of questioning and reconstructing the individual and collective identity they have lost because of the social problems they have faced, which has led them to a complete invisibility and exclusion of society. A series of events around talking, eating, walking, and unlearning are proposed as possible ways to provide the tools for the self-valorization of these people within the dynamics of the city, as political and social beings able to make real changes in the community. The whole initiative seeks to create a form of resistance to the label these people have, and empower them to potentialize their abilities, because they deserve to be seen by the rest of us and they are as precious as we all are, and they have to get aware of it.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
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The pedagogy of the birds – instinct + practice = La pedagogía de los pájaros – instinto + práctica

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Imagen de apoyo de  Reporting on victims of violence: Media coverage of the extrajudicial killings in Colombia = Reportaje periodístico de víctimas de la violencia: Cobertura Mediática de las ejecuciones Extrajudiciales en Colombia

Reporting on victims of violence: Media coverage of the extrajudicial killings in Colombia = Reportaje periodístico de víctimas de la violencia: Cobertura Mediática de las ejecuciones Extrajudiciales en Colombia

Por: Sandra Milena Rodríguez Rojas | Fecha: 2010

This research examines the newspaper coverage, El Tiempo, of the extrajudicial killings in Colombia and in a wider context the media coverage of victims of violence. The literature found in this dissertation suggests that the way in which media report on victims of violence can either harm or help the healing process of the victims and victims’ family members. Moreover, ignoring the victims’ voices in the mass media and their personal testimony prevents the wider society from acknowledging the atrocities committed and the extent to which conflict has affected collective identity. Journalists, as story writers, bring the stories of pain and suffering to the wider society, therefore they play an important role on deconstructing the deeply damaged victims’ and their relatives’ identity. From a humane reporting perspective is argued that journalists’ and media organizations’ understanding of the psychological effects of trauma after violence can be an important and useful tool when covering violence. The content analysis of one year coverage on the extrajudicial killings in Colombia shows that institutionalized voices, for instance official viewpoints are privileged sources of information; moreover the use of journalistic structures such as writing style and news values prevent the victims and their relative’s testimonies to be heard and expose to the society. Several challenges are posed when reporting on conflict and victims of violence, therefore media organizations and media workers are encourage to critically reflect on their own practice in order to report on victims and trauma in a humane and transformative way.
Fuente: Biblioteca Virtual Banco de la República Formatos de contenido: Tesis
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Reporting on victims of violence: Media coverage of the extrajudicial killings in Colombia = Reportaje periodístico de víctimas de la violencia: Cobertura Mediática de las ejecuciones Extrajudiciales en Colombia

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