Tres variedades de políticas en Chile frente a la abundancia de capitales

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EnREDos: regulación y estrategias corporativas frente a la convergencia tecnológica

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Aspectos ambientales de la expansión de la frontera agropecuaria en la Amazonia: el frente de deforestación y los patrones de ocupación

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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.

América Latina y el Caribe frente al nuevo escenario económico internacional

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La reacción de los gobiernos de América Latina y el Caribe frente a la crisis internacional: una presentación sintética de las medidas de política anunciadas hasta el 31 de mayo de 2009

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El papel de la política tributaria frente a la crisis global: consecuencias y perspectivas

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La reacción de los gobiernos de las Américas frente a la crisis internacional: una presentación sintética de las medidas de política anunciadas hasta el 31 de diciembre de 2009

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América Latina frente al espejo: dimensiones objetivas y subjetivas de la inequidad social y el bienestar en la región

Prólogo de Alicia Bárcena

La reacción de los gobiernos de las Américas frente a la crisis internacional: seguimiento de las medidas de política, actualización al 31 de diciembre de 2011. (Versión preliminar)

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Una evaluación preliminar de las políticas implementadas por los gobiernos de América Latina y el Caribe frente a la crisis - Reunión de mayo de 2010

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Estudo fitoquímico preliminar e bioensaio toxicológico frente a larvas de Artemia salina Leach. de extrato obtido de frutos de Solanum lycocarpum A. St.-Hill (Solanaceae)

The phytochemical profile of ethanolic extract of Solanum lycocarpum fruits was analyzed and preliminary toxicity tests were performed against brine shrimp larvae. The extract was subjected to preliminary phytochemical analysis to identify the main classes of secondary metabolites and tested against the larvae of A. salina to obtain the median lethal concentrations (LC50%). The phytochemical tests showed the presence of phenols, tannins, saponins, alkaloids and free steroids. The extract was fractionated with various solvents for toxicity testing against the larvae and the hydroalcoholic fraction showed considerable cytotoxicity (CL50% = 285.546 g/mL).

Estudo clínico randomizado e aberto para avaliação de eficácia e superioridade dos medicamentos EF028 aerossol, EF028 creme e Andolba® frente ao tratamento controle e comparativo de não inferioridade entre os medicamentos EF028 aerossol, EF028 creme e Andolba® para avaliação de eficácia na redução da sintomatologia dolorosa

Aim: This study aimed to evaluate the efficacy of a new topical drug (EF028) in two separate presentations (aerosol and cream) in a comparative way with the already registered medication, Andolba® (benzocaine, benzoxiquina chloride benzeconio, menthol) and the negative control (hygiene), in the analgesic efficacy after episiotomy wound, reducing the requirement for systemic medication. Methods: 60 patients were voluntary post normal vaginal childbirth with episiotomy, were divided into four groups to comparatively assess the action of the product EF028 (cream and aerosol), Andolba® and soap, the efficacy of decreasing painful symptoms from daily use for 2 times a day for seven days. Clinical assessments and subjective pain occurred daily until the third postoperative day and on the 7th postoperative day. Results: The results showed that the drugs promoted a reduction of painful symptoms and there was no statistically significant difference (p <0.05) between presentations of drug EF028 (cream and aerosol) and Andolba® and the three products were significantly higher (p <0.05) to the control. Conclusions: The evaluated drugs EF028 aerosol, EF028 cream and Andolba® had similar efficacy in relieving the painful symptoms of the perineal region in postoperative episiotomy can be considered as indication for postoperative episiotomies. © Copyright Moreira Jr. Editora.

América Latina y el Caribe frente a la coyuntura energética internacional

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