894 resultados para Economic assessment
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Foreword This publication provides an assessment of the region's economic performance and economic trends during the first half of 2002 and of its prospects for the remainder of the year within the context of the previous year's performance. An analysis is presented of the main aspects of the regional economy -its external sector, levels of economic activity, inflation, employment, saving and investment, and macroeconomic policy-, accompanied by a statistical appendix containing 13 tables with data series through 2001. The document, which is being published simultaneously in Spanish and English, corresponds to the first chapter of the Economic Survey of Latin America and the Caribbean, 2001-2002, issued in Spanish in September and in English later in the year. Wide distribution of this document is intended to serve the purpose previously performed by the Economic Panorama of Latin America, a publication that was issued in September of each year between 1985 and 1996. See also an advance version of the survey of economic developments in English-speaking countries of the Caribbean in 2001 and their prospects in 2002 which will be contained in final, revised form in the Economic Survey 2001-2002.
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The subterranean termite Coptotermes gestroi Wasmann (Isoptera: Rhinotermitidae) is a pest of major economic importance in urban environments of southeastern Brazil. Compared to using pesticides for termite control, termite bait products target termites more specifically and also address environmental contamination issues. In this point of view, we performed two different bioassays in order to evaluate the efficacy of boric acid and fipronil against different populations of C. gestroi. The results showed that concentrations between 2000 and 3000 ppm of boric acid caused approximately 100 percent mortality in termites. Concentrations between 0.01 and 0.0001 ppm of fipronil resulted in 100% termite mortality after 2 wk exposure. The data displayed a fast mortality of termites contaminated with fipronil, even with small concentrations, and therefore it is not a suitable product to be used in baits against C. gestroi. The present study showed a delayed toxicity of boric acid against the subterranean termite C. gestroi which suggests a need for further field tests.
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