Trabajo de la mujer en la educacion de sobrevivencia familiar: Chile

Incluye Bibliografía

Grupo itararé (P - C da bacia do Paraná) nas regiões de Limeira e Piracicaba - SP: Contribuição ao estudo das litofácies

The Permian-Carboniferous Itararé Group is one complexe lithostratigraphic unit of the Paraná Basin, southeastern Brazil, typically marked by discontinuity of its lithofacies. Under the exploratory point of view, the unit represents one of the most significant intervals of the basin, since several occurrences of mineral and energetic resources are associated to it, as groundwater, petroleum and coal. The prospection and exploitation of these resources depend on a good understanding of the stratigraphic architecture and the paleogeography. There are many contributions on the specialized literature which deal with this subject, although the regions of Limeira and Piracicaba (superior portion of the unit) still lack new investigations, which may contribute to the understanding of its lithofacies and related sedimentary processes. It was analyzed the sedimentary sets pilling up, followed by stratigraphic correlations between the two regions. Moreover, from sedimentary structures, it was made paleocurrent measurement with the purpose of obtaining indicative patterns of the sedimentary polarity, contributing for the comprehension of the paleogeography. Recent studies in the Domo de Pitanga region (between Rio Claro and Piracicaba cities) and in the Corumbataí river drainage basin, were taken also as basis for possible correlations. It was obtained a frame of the lithofacies arrangement, their vertical and lateral relations, as well as their depositional polarities.

Geologia e litogeoquímica da formação serra geral nos estados de mato grosso e mato grosso do sul

The basalts of the Formação Serra Geral in Parana Basin in the Mato Grosso do Sul and Mato Grosso states cover an area of 180,000 km2. They rest on the Botucatu sandstones and they are recovered by the sedimentary rocks of Bauru and Caiuá Groups. The mineralogical composition of these rocks are plagioclase (40%-55%), clinopyroxenes (19%-40%; augite and pigeonite), opaque minerals (2%-10%; magnetite and ilmenite) and olivine (1.5%). Geochemical data show two different types of basalts, named ATi-Pitanga (2.6% < TiO2 < 4.2%; 396 ppm < Sr < 438 ppm) and BTi-Ribeira (1.7% TiO2 <2.4%, 246 ppm < Sr < 286 ppm). In general, ATi-Pitanga have gently higher La/Yb(n) (6,1 ± 1,5ppm) than those BTi-Ribeira (5.6 ± 1,7ppm). The geochemical differences between ATi-Pitanga and BTi-Ribeira probably are related to different degrees of partial melt of a same mantle source, or to different mantle sources. The field relations show that BTi-Ribeira is displaced towards the north-western margin of the Paraná Basin and the thickness of lava flows increases towards the Paraná Graben, suggesting that ATi-Pitaga overlies BTi-Ribeira.

Evolución reciente de las exportaciones PYMES en Argentina: debate para una mejor inserción externa

Includes bibliography

La alfabetización de personas jóvenes y adultas en América Latina y el Caribe: análisis de los principales programa

Incluye bibliografía

Comercialización de los derechos de aguas en Chile

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Propuestas para la formulación de políticas para el desarrollo de tramas productivas regionales. El caso de la lechería caprina en Argentina

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Alternativas de política para fortalecer el ahorro de los hogares de menores ingresos: el caso de Costa Rica

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Destinatarios y usos de remesas: ¿una oportunidad para las mujeres salvadoreñas?

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Uso del tiempo de mujeres y hombres en Colombia: midiendo la inequidad

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Lo que queda a los jóvenes: capital social, trabajo y juventud en varones pobres del Gran Buenos Aires, Argentina

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Impacto sobre la fecundidad de los cambios en los sistemas de género

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La participación de la mujer indígena en el contexto de la Asamblea Constituyente

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Participacion de la mujer en las actividades economicas en Chile (1960): un analisis de las variables demograficas, en particular la fecundidad

Incluye Bibliografía