Le virus du papillome humain (HPV) est l’infection sexuellement transmise la plus fréquente au monde. Plusieurs études ont établi son implication dans l’étiologie de pratiquement tous les cancers du col de l’utérus, une maladie qui constitue un problème de santé…

Devant le manque de ressources économiques et la pauvreté, les « OGM » apparaissent comme un outil visant à contribuer à la croissance économique et alimentaire, notamment dans les pays en voie de développement et sous-développés. Cependant, nous devons nous…

Volviendo al papiro griego del siglo III d.C. que recoge la leyenda de la diosa Tefnut
y que abordamos ya en el número 23-24 de esta misma revista, establecemos ahora una comparación entre su contenido y el contenido de la…

Both in Chile and in other countries, managing municipal solid waste (MSW) is a difficult problem, due to the various variables explaining it. Several background data suggest that the possibilities of solving the problem are associated to the education and…

The Environmental Management System (EGS), was constituted at the University of Antioquia in order to improve the environmental conditions, health and well being levels of the community; promoting the efficient use of resources, involving cultural changes in consume patterns, knowledge…

The improvement or design of a solid waste management system in any locality should be based on the knowledge of the solid waste characteristics, such as generation per capita, density and composition; depending on the type of treatment that is…

To solve the several problems caused from the deficient solid waste management in many of our municipalities, must be considered 4 substantial items: planning, legislation, the most citizen participation and the financing aspect. Failing in any of those subjects is…

The objective of this paper is the development of a mathematical model of anaerobic digestion that simulates the principal control variables in the process, and helps the planning and operational phases in normal and particular situations of operation in the…

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Purpose: The international literature suggests that disabled people may be at increased risk for HIV infection. There is a growing increasing recognition of this in South Africa, although there remains a paucity of literature on how disabled people are affected…