Risk transmission between Latin America stock markets and the US: impacts of the 2007/2008 Crisis

The aim of this paper is to investigate whether the US subprime financial turmoil has had any statistically significant effect on the conditional volatility of stock prices in Latin America for which the BEKK methodology is adopted, developed by Engle and Kroner (1995). The t-student distribution is employed as it can provide a best fit for financial data. In order to do this study, we will investigate four Latin America emerging capital markets (Brazil, Argentina, Chile and Mexico) and the United States, considering the period of the recent financial crisis of 2007/2008, analyzing before, during and after the crisis period. Our results show that before the crisis there is no evidence of volatility spillovers from the North American stock market to Latin American ones. During the crisis, there is evidence of volatility spillover effects on some countries. Brazil and Chile affect the US volatility and Argentina, Chile and Mexico are affected by the US's. After the crisis, the volatility of all Latin American stock markets affect and are affected by the US market. These results show an increase in spillover effects from a shock to US stock market to Latin American countries after the 2007/2008 financial crisis.financial crisis, volatility spillover, Latin America

Historical Ecology, Archaeology and Biocultural Landscapes: Cross-Disciplinary Approaches to the Long Anthropocene

From the local to the global scale, human impact is the real protagonist of the Anthro- pocene. It is impossible to understand ecosystems and the landscape without considering the long-term processes of anthropic activities. The driving forces in landscape change are strongly related to historical dynamics. Changes in political regimes, social structures, eco- nomic modes of production, cultural and religious influences—which all traditionally fall within the domain of the humanities—are phenomena entangled with many ecological and environmental factors. Thus, understanding landscapes in the Anthropocene is impossible without a cross-disciplinary approach

Controlled Release of Drugs FromHydrogel Based Matrices Systems: Experiments and Modeling

Hydrogels are materials largely used in the formulation of pharmaceuticals since, in principle, they could produce a release system of zero-order kinetics, which is of great therapeutic interest. In this paper, a model was proposed for the description of the main transport phenomena involved in the drug release process from hydrogel matrices (water diffusion, polymer swelling, drug diffusion and polymer dissolution); the model predictions are successfully compared with a large set of experimental data, obtained working with matrices systems based on HPMC (Hydroxy Propyl Methyl Cellulose). The proposed model was found able to reproduce main features of the observed phenomena, it can thus be adopted for prediction of the performances of drug release systems from hydrogel matrices

Controlled Release of Drugs FromHydrogel Based Matrices Systems: Experiments and Modeling

Hydrogels are materials largely used in the formulation of pharmaceuticals since, in principle, they could produce a release system of zero-order kinetics, which is of great therapeutic interest. In this paper, a model was proposed for the description of the main transport phenomena involved in the drug release process from hydrogel matrices (water diffusion, polymer swelling, drug diffusion and polymer dissolution); the model predictions are successfully compared with a large set of experimental data, obtained working with matrices systems based on HPMC (Hydroxy Propyl Methyl Cellulose). The proposed model was found able to reproduce main features of the observed phenomena, it can thus be adopted for prediction of the performances of drug release systems from hydrogel matrices

Primeros datos de la caracterización etnológica del perro cimarrón

En este trabajo se dan a conocer los primeros datos de la situación zootécnica de la raza canina Cimarrón, con el fin de lograr la caracterización de la misma. El estudio fue realizado sobre una muestra compuesta por 81 ejemplares adultos (33 machos y 48 hembras) todos registrados en el libro genealógico y elegidos al azar en exposiciones especializadas de la raza, realizándose un estudio morfoestructural y faneróptico. Con el fin de determinar el empleo de los canes, cual es el ambiente en que viven, la sanidad de la población y cual es el criterio empleado a la hora de elegir los reproductores, se realizó una encuesta zootécnica a criadores y propietarios. Con los datos obtenidos, se efectuó el análisis estadístico descriptivo de la muestra. Se observó un marcado dimorfismo sexual en casi todas las características; los machos presentaron mayores medidas para todas las variables de altura y diámetro, comparados con las hembras, siendo éstas menos robustas y más delicadas. En lo referente al estudio faneróptico, se apreció un marcado predominio de las capas atigradas; todos los ejemplares presentaron la trufa pigmentada. En lo referente a la coloración del iris predominó el tono oscuro, presentando el 21 p.100 de los animales, iris de color claro. Con respecto a la presencia de subpelo, lo presentaron el 57 p.100 de la muestra. De la encuesta zootécnica se apreció que los canes son empleados principalmente como animales de compañía y guarda, siendo desparasitados regularmente y recibiendo inmunoprofilaxis de las patologías más frecuentes anualmente. Con respecto al criterio de selección de los reproductores, la mayoría de los encuestados hasta el momento lo hacen por la coloración de la capa y que posean a su parecer una buena conformación

The Cimarron dog, the autoctonous dog breed of Uruguay

The Creole o Cimarron is the unic Uruguayan native dog breed. In this paper a historical description is done from their origin to the present, considering the status of this breed today, the situation of the genealogical registers and the description of the racial phenotype. Finally a future plan of work is proposed inside the general programme of native domestic animal of Uruguay in developing by the area of domestic animals genetic improvement of the Faculty of Veterinary in the University of the Republic.El Perro Cimarrón o Criollo es la única raza canina autóctona en Uruguay. En este trabajo se desarrolla una reseña histórica desde sus orígenes hasta el presente, considerando la situación actual de la raza, el estado de los registros genealógicos y la descripción del fenotipo racial. Por último se plantea en esta raza un futuro plan trabajo dentro de las medidas de conservación de animales domésticos autóctonos del Uruguay, a realizar por el área de Mejoramiento Genético Animal de la Facultad de Veterinaria, Universidad de la República