O Bric e a substituiçao de hegemonias: um exercício analítico (perspectiva histórico-diplomática sobre a emergência de uim novo cenário global)

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Análisis histórico ambiental, actores tipo y procesos ecológicos

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Las dimensiones socioeconómicas de la desertificación: avances en la utilización de indicadores: un ejercicio en el caso de Mendoza, Argentina

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Análise geoambiental da região de marília, SP: Suscetibilidade a processos erosivos frente ao histórico de ocupação da área

The study area comprises the western portion of the Marília Plateau, State of São Paulo, southeastern Brazil. The geological substrate encompasses Cretaceous sedimentary rocks of the Bauru Group and local Neocenozoic units like colluvium aprons, fluvial terrace deposits, in situ regoliths, and modern alluvial deposits. In a geomorphologic sense, the study area might be characterized as showing two main pediplanes, viz. P1 Surface (upper) and P2 Surface (lower), both surfaces are presently under dissecation processes. After the 1920's the expansion of the railroad system fostered the removal of the natural vegetation, which in turn was followed by the introduction of coffee, peanut, corn and cotton crops. This intense exploitation was conducted without respect to the soil carrying capacity and its natural susceptibility to erosional processes, including an aggressive form known as voçoroca. As a result, the study shows that the most susceptible material includes colluvium aprons, in situ regoliths, and colluvium-alluvium or alluvium deposits. The most critical situation is in the P2 Surface context, near the bottom of the Marília Plateau scarpment, where surface runoff can be very strong. Another point of active erosion is represented by the exposed walls of gullies and voçorocas, mainly in fluvial reaches subjected to talweg lowering. In a general sense, this study shows current evidence of erosional stability due to the ìntroduction of pastures as a predominant type of land occupation and to a series of erosion control procedures. Among these actions are terrace implantation, construction of small pits for runoff control, natural or induced reforestation by land owners. Despite these efforts, some erosion points remain chiefly in steeper country roads and trail stretches, in areas of concentration of cattle tracks (e.g., near cattle ponds), gullies or voçorocas exposed walls, and badly planned urbanization. The permanence of these erosion points demonstrates the necessity of a continuous monitoring of surface dynamics as well as a rapid and effective intervining measures of erosion and/or silting control.

Desarrollo histórico y aceptación política del concepto de cobranza por el uso de la vialidad urbana congestionada

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Perfil y características de la estructura industrial actual de la provincia de Mendoza: volumen I

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Perfil y características de la estructura industrial actual de la provincia de Mendoza: volumen II. Anexo estadístico

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La sostenibilidad de la deuda pública y la postura fiscal en el ciclo económico: el Istmo Centroamericano

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Marco histórico del proceso de desarrollo y de subdesarrollo

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Industria farmacéutica y farmoquímica: desarrollo histórico y posibilidades futuras: Argentina, Brasil y México

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Reforma fiscal provincial en Argentina: el caso de Mendoza, 1987-1991

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Descentralización fiscal en Argentina desde una perspectiva local: el caso de la provincia de Mendoza

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Caracterização química e mineralógica de azulejos portugueses do centro histórico de São Luís-MA (Brasil): Uma aproximação à mineralogia e à temperatura de queima das matérias-primas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Un recodo histórico en la periferia latinoamericana

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