Influência do arcabouço hidroestratigráfico nas ocorrências de arsênio em águas subterrâneas ao longo do corredor termal do rio Uruguai (Argentina - Brasil - Uruguai)

The Thermal Corridor of Uruguay River is located in the triple border of Argentine, Brazil and Uruguay, and shows an intense economic thermal tourism activity, mainly based on groundwaters from Guarani Aquifer System (GAS). Recent studies have pointed out the occurrence of high concentrations of arsenic (>10 μg/L) in GAS groundwater in this area. The complex geological and hydrogeological framework in the area is associated to the Paraná Basin geological evolution south of the Assuncion-Rio Grande Arch; it encompass paleozoic marine sequences and continental sequences permian/eotriassic to mesozoic in age, which are covered by basaltic lavas of Serra Geral Formation. Iron oxide coatings have been described in sandstones of Buena Vista and Sanga do Cabral formations, which underlie GAS units. Arsenic occurrence is associated to sodium bicarbonate groundwater with pH values over 8.0. Arsenic is released to groundwater by desorption from iron oxides/hydroxides, as result of the higher pH of these waters, indicating that arsenic is released from the units that underlie GAS units. Increase in chromium and uranium concentrations are also related to high pH groundwaters, thus indicating special care on using groundwater from this region.

Trade reforms and trade patterns in Latin America

Includes bibliography

Amphibia, Anura, Leptodactylidae, Leptodactylus furnarius Sazima and Bokermann, 1978: Geographic distribution extension in Brazil

The geographic distribution of Leptodactylus furnarius Sazima and Bokermann, 1978 comprises Argentina, Brazil (southern, southeastern, and west-central regions), Paraguay, and Uruguay. Herein, we report for the first time the occurrence of L. furnarius in northeastern and north regions of Brazil, at the states of Bahia and Tocantins, respectively. © 2010 Check List and Authors.

Migración y salud en zonas fronterizas: el Estado Plurinacional de Bolivia y la Argentina

Incluye Bibliografía

Financial regulation and supervision in emerging markets: the experience of Latin America since the Tequila crisis

Includes bibliography

Acuerdo de integración entre Argentina y Brasil: la industria de bienes de capital; versión preliminar

Presenta las principales características del desarrollo industrial argentino en la última década, detalla las especificidades de la producción de bienes de capital, describe los acuerdos de integración, analizando en especial el Protocolo No 1 sobre la industria de bienes de capital

Estudo de caso relativo à uma fabricaçao de caixas de cambio com intercambio de partes e peças entre Argentina e o Brasil

Documento Informativo, No 21/Information Paper, No 21. Publicado separadamente en cada idioma

Autonomia, universalismo e alinhamento na política externa brasileira do século XX e suas implicações nos processos de integração regional

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Nuevas instituciones para la innovación: Prácticas y experiencias en América Latina

Incluye bibliografía.

Gobernanza del gas natural no convencional para el desarrollo sostenible de América Latina y el Caribe: experiencias generales y tendencias en la Argentina, el Brasil, Colombia y México

El presente estudio tiene por objeto relacionar la problemática del desarrollo sostenible con la explotación de gas natural no convencional a nivel general y en específico para los países seleccionados