Implications of unmet of family planning for policy and demographic impact: a comparative analysis of large countries

Includes bibliography

Education and research in urban planning and development in Latin America

Las tasas de urbanizacion de America Latina son las mas altas del mundo y los problemas generados por ellas seguiran influyendo en el desarrollo politico, economico y social de la region en los anos futuros. Las necesidades de formacion de profesionales y de investigacion en el campo del desarrollo urbano son tan enormes y los esfuerzos desplegados tan escasos, que se requiere un enfoque enteramente nuevo de parte de las agencias interamericanas. En este sentido, se propone la formacion de un Consejo de Asuntos Urbanos de las organizaciones interamericanas destinado a: a).orientar y financiar los esfuerzos y prestar asesoria en problemas de urbanizacion; b).establecer, en el largo plazo, centros de estudios urbanos y de planificacion nacionales y/o regionales; c).asesorar a las universidades a traves de grants, becas y bolsas viajeras e incrementar el numero actual de becas en desarrollo urbano; d).patrocinar la elaboracion de materiales para la formacion de urbanistas.

Comparative analysis between biogas flow in landfill and electrical resistivity tomography in Rio Claro city, Brazil

The biogas originated from anaerobic degradation of organic matter in landfills consists basically in CH4, CO2, and H2O. The landfills represent an important depository of organic matter with high energetic potential in Brazil, although with inexpressive use in the present. The estimation of production of the productive rate of biogas represents one of the major difficulties of technical order to the planning of capture system for rational consumption of this resource. The applied geophysics consists in a set of methods and techniques with wide use in environmental and hydrogeological studies. The DC resistivity method is largely applied in environmental diagnosis of the contamination in soil and groundwater, due to the contrast of electrical properties frequent between contaminated areas and the natural environment. This paper aims to evaluate eventual relationships between biogas flows quantified in drains located in the landfill, with characteristic patterns of electrical resistivity in depth. The drain of higher flow (117 m3 /h) in depth was characterized for values between 8000 Ω⋅m and 100.000 Ω⋅m, in contrast with values below 2000 Ω⋅m, which characterize in subsurface the drain with less flow (37 m3 /h), besides intermediary flow and electrical resistivity values, attributed to the predominance of areas with accumulation or generation of biogas.