Policy alternatives and strategies for the Plurinational State of Bolivia following the end of trade preferences

Includes bibliography

The Mexican economy at the end of the century

Includes bibliography

Latin American agriculture: its prospects up to the end of the century

Examina las actuales tendencias y problemas agropecuarios, tanto en el plano mundial como en América Latina, a fin de disponer del marco apropiado para analizar las perspectivas futuras de la región.

Evaluation of degree of conversion and hardness of dental composites photoactivated with different light guide tips

Objective: The aim of this study was to evaluate the degree of conversion and hardness of different composite resins, photo-activated for 40 s with two different light guide tips, fiber optic and polymer. Methods: Five specimens were made for each group evaluated. The percentage of unreacted carbon double bonds (% C=C) was determined from the ratio of absorbance intensities of aliphatic C=C (peak at 1637 cm-1) against internal standard before and after curing of the specimen: aromatic C-C (peak at 1610 cm-1. The Vickers hardness measurements were performed in a universal testing machine. A 50 gf load was used and the indenter with a dwell time of 30 seconds. The degree of conversion and hardness mean values were analyzed separately by ANOVA and Tukey's test, with a significance level set at 5%. Results: The mean values of degree of conversion for the polymer and fiber optic light guide tip were statistically different (P<.001). The hardness mean values were statistically different among the light guide tips (P<.001), but also there was difference between top and bottom surfaces (P<.001). Conclusions: The results showed that the resins photo-activated with the fiber optic light guide tip promoted higher values for degree of conversion and hardness.

Clasificación de propuestas de proyectos mineros por países = Classification of mineral project proposals by countries

Complementa la información contenida en el documento E/CEPAL/G.1207

Ministry of Economic Development of Belize, Project Bank: user's manual, Belmopan, April 1988

Introduce un programa de computador que servirá de herramienta para ayudar al gobierno de Belice en la preparación, programación y monitoreo de inversiones públicas y privadas

Ministry of Economic Development of Belize, Project Bank: manual for the appraisal and monitoring of projects

Contiene información sobre el sistema de información sobre proyectos del Ministerio de Desarrollo Económico de Belice, e instrucciones para la evaluación y monitoreo de proyectos

South American Transport Statistics System (SETAS)- Analysis of pilot project

The SETAS pilot project was carried out by the ECLAC Transport Unit, between October 1999 and May 2000 to assess the feasibility of constructing a transport statistics information system for South America. As this would entail a major effort to establish common statistical procedures and criteria between countries, the pilot project attempted to assess the potential of using informatics techniques for standardizing a significant set of regional transport statistics variables.The pilot phase involved specialized transport statistics institutes from Bolivia, Brazil and Chile — the countries chosen to participate in the initial stage of the project. There was also participation by staff members from the Latin American Integration Association (LAIA), and from the ECLAC Statistics and Economic Projections Division, the Electronic Information Centre and the Transport Unit of the Natural Resources and Infrastructure Division.This edition of the FAL Bulletin explains on the components of the SETAS pilot project and the results obtained.

Limit cycles of cubic polynomial differential systems with rational first integrals of degree 2

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)