Chronostratigraphy and radiocarbon age inversion in the Holocene regressive barrier of Paraná, southern Brazil

Twenty-two 14C datings were performed at the central sector of the Paraná coast to define Holocene regressive barrier evolution. The barrier Pleistocene substratum was ascribed an age between 40 400 and 30 000 yr BP, but it can also represent the penultimate sea level highstand during marine isotope stage 5e. The Holocene barrier samples provided ages between 8542-8279 and 2987-2751 cal yr BP, and showed at least six age inversions that were related to age differences between in situ or low-distance transported shells or trunk fragments, and high-distance transported vegetal debris, wood fragments and organic matter samples. The regressive Holocene barrier age was 4402-4135 cal yr BP near the base, and 2987-2751 cal yr BP near the top. Most of the vegetal remains were transported by ebb tidal currents from the estuaries to the inner shelf below wave base level during the mid-Holocene highstand; they were transported onshore by storm waves and littoral currents during the sea level lowering after the sea level maximum, and were deposited mainly as middle shoreface swaley cross-stratification facies. © 2008.

Anotaciones para el analisis politico de las politicas de poblacion: la relacion entre la estructura de poder y la accion publica

Incluye Bibliografía

El aborto inducido como problema de salud publica

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El control de la natalidad y el argumento del ahorro y la inversion

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Salud publica y tendencias demograficas en America Latina

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Tendencias de la urbanizacion, inversion de la polarizacion y politica espacial en Colombia

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Política de irrigación: estudio de un proceso de concentración en México

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Revista de la CEPAL no.25

La economía latinoamericana durante 1984: un balance preliminar / Enrique V. Iglesias. -- Las empresas transnacionales y el comercio internacional de América Latina / Eugenio Lahera. -- El papel subsidiario de la inversión externa directa en la industrialización: el sector manufacturero colombiano / Michael Mortimore. -- Políticas de estabilización y ajuste en el Cono Sur, 1974-1983 / Joseph Ramos. -- Desarrollo rural y programación urbana de alimentos / Manuel Figueroa L. -- Sociedades dependientes y crisis en América Latina: los desafíos de la transformación político-social / Germán W. Rama y Enzo Faletto. -- Cultura, discurso (autoexpresióri) y desarrollo social en el Caribe / Jean Casimir. -- Aspectos legales de la deuda pública latinoamericana: la relación con los bancos comerciales / Gonzalo Biggs.

CEPAL Review no.25

The Latin American economy during 1984: a preliminary overview / Enrique V. Iglesias / The transnational corporations and Latin America’s international trade / Eugenio Lahera. -- The subsidiary role of direct foreign investment in industrialization: the Colombian manufacturing sector / Michael Mortimore. -- Stabilization and adjustment policies in the southern cone, 1974-1983 / Joseph Ramos. -- Rural development and urban food programming / Manuel Figueroa L. -- Dependent societies and crisis in Latin America: the challenges of social and political transformation / Germán W. Rama and Enzo Faletto. -- Culture, discourse (self-expression) and social development in the Caribbean / Jean Casimir. -- Legal aspects of the Latin American public debt: relations with the commercial banks / Gonzalo Biggs.

O Investimento Estrangeiro Direto na América Latina e Caribe 2015. Documento informativo

Em edições anteriores deste relatório, o ano que figurava no título correspondia àquele para o qual se apresentavam os dados. A partir de agora, e para alinhar-se com os outros relatórios periódicos da CEPAL, o relatório levará no título o ano em que se publica. Isto significa que não existe a edição 2014 desta publicação.

La Inversión Extranjera Directa en América Latina y el Caribe 2015

En ediciones anteriores de este informe, el año que figuraba en el título correspondía a aquel para el que se presentaban los datos. A partir de ahora, y para alinearse con el resto de los informes periódicos de la CEPAL, el informe llevará en el título el año en el que se publica. Esto significa que no existe la edición 2014 de esta publicación.

La Inversión Extranjera Directa en América Latina y el Caribe 2016

El presente informe La Inversión Extranjera Directa en América Latina y el Caribe es la edición correspondiente a 2016 de la serie anual que publica la Unidad de Inversiones y Estrategias Empresariales de la División de Desarrollo Productivo y Empresarial de la Comisión Económica para América Latina y el Caribe (CEPAL).

Inversion method for obtaining electrical parameters for soil in the rural region in Brazil

This paper presents an inversion methodology through weighted least squares to obtain the electrical parameters for the soil of a typical mid-western region in Brazil using the model based in the formalism of the parabolic equations to calculate the electric field intensity received. To validate this methodology, the results of the radio signal measurement campaign conducted in six radial routes leaving the city of Brasilia, Federal District, where the transmitter was located, were used. The measurements were compared to computer simulations and, thus, the optimal values for the electric conductivity and relative permittivity for the soil of the region could be estimated. Finally, a quantitative analysis of these parameters was performed with the values found in the literature, which demonstrated the effectiveness of the proposed methodology.

Estimação de metas estratégicas por meio de análise por envoltória de dados e modelo da Barganha de Nash: aplicação na área de saúde publica

Pós-graduação em Engenharia Mecânica - FEG