Perspectivas para la planificación municipal en América Latina = Outlook for municipal planning in Latin America

Incluye Bibliografía

Prospects for the use of municipal tree pruning wastes in particleboard production

The purpose of this study was to evaluate the physical and mechanical properties of particleboard made with pruning wastes from Ipê (Tabebuia serratifolia) and Chapéu-de-Sol (Terminalia catappa) trees. Particleboards were prepared with both wood species, using all the material produced by grinding the pruning wastes. The particleboards had dimensions of 45×45 cm, a thickness of approximately 11.5 mm and an average density of 664 kg/m3. A urea-formaldehyde adhesive was used in the proportion of 12% of the dry particle mass. The particleboards were pressed at a temperature of 130 C for 10 mins. The physical and mechanical properties analyzed were density, moisture content, thickness swelling, percentage of lignin and cellulose, modulus of resilience, modulus of elasticity and tensile strength parallel to the grain, accordingly to the standards NBR 14810 and CS 236-66 (1968). The particleboards were considered to be of medium density. The particle size significantly affected the static bending strength and tensile strength parallel to the grain. Ipê presented better results, demonstrating a potential for the production and use of particleboard made from this species. © The Author(s) 2013.

Ponencia de las actividades de información sobre población en la Secretaría de Planificación y Presupuesto (SPP) de la República de Nicaragua

Contiene las actividades sobre población de la Secretaría a traves de su Centro de Documentación, que en conjunto con el Instituto Nacional de Estadística y Censos desarrolló el Sistema Integrado de Información y Documentación en Población (SIDOP). Analiza la informacion sobre población utilizada y generada por las unidades de información bibliográfica y procesamiento de datos de la Institución. Presenta sugerencias sobre cooperación inter-institucional y regional.