Dr. Juan Dalma : el diplomático

Fil: Pró, Diego F..

El debate sobre el financiamiento externo a las Ciencias Sociales latinoamericanas en Chile

En la presente tesis, nos proponemos mostrar que desde su irrupción en la esfera pública, en 1965, se construyó en torno al Camelot un mito respecto al flujo de dinero para espionaje a través de investigaciones sociológicas. El mito estuvo basado particularmente en la fusión de dos elementos de diferente nivel. Por un lado, que el financiamiento externo a las ciencias tenía carácter no solamente de espionaje -en este caso los Estados Unidos- y conspiración para conocer áreas claves de conflicto de los países periféricos, sino también, por otro lado, que implicaba subordinación y dependencia de los objetivos e intereses científicos de estos países a los centrales.

El Congreso Nacional en la política exterior argentina : 1991-93

Fil: Noto, Gerardo Orlando.

Sediment physicochemical properties condition pollutant association : a multivariate study of polybrominated diphenyl ethers on the Mendoza River irrigation areas

This work is a multidisciplinary environmental study that provides new insights into the relationships between sediment-organic matter characteristics and polybrominated diphenyl ethers (PBDEs) concentration. The aim of the present multivariate study was to correlate factors influencing PBDEs accumulation in sediment by using principal component analysis (PCA). Organic matter studies by Fourier Transform-Infrared spectroscopy and physicochemical analyses (Total Organic Carbon, pH, electrical conductivity) of sediment samples were considered for PCA. Samples were collected from an artificial irrigation network on the Mendoza River irrigation areas. PCA provided a comprehensive analysis of the studied variables, identifying two components that explained 63% of the data variance. Those factors were mainly associated to organic matter degradation degree, which represent a new insight into the relationships between organic matter in sediments and PBDEs fate. In this sense it was possible to determine that not only the content but also the type of organic matter (chemical structure) could be relevant when evaluating PBDEs accumulation and transport in the environment. Typification of organic matter may be a useful tool to predict more feasible areas where PBDE, may accumulate, as well as sediment transportation capability.