Factores geológicos relacionados con problemas de salud / Geological factors and health problems

Se realizó una revisión de un tema poco estudiado; es decir, los factores geológicos y sus determinantes en la salud humana, que generalmente ha sido enfrentado a enfermedades no transmisibles. Fue nuestro propósito revisar cómo el suelo puede ser un factor a la salud y contribuir a desarrollar nuevos enfoques que permitan tener una visión holística, para una mejor comprensión del complejo problema de salud-enfermedad y poder enfrentarlos con medidas más efectivas sobre sólidas bases científicas. En esencia, es una amplia revisión del enfoque ecosistémico en salud que no siempre agrupa todas las disciplinas por su gran extensión y sólo generalmente se hace énfasis en algunos de ellos. Además aporta los elementos básicos para el desarrollo de nuevas investigaciones en este campo y, muy especialmente, en las enfermedades infecciosas(AU)

Geologic factors and their determinant in the human health it is a poorly studied topic and generally mentioned to non communicable diseases. The present revision purposes to develop a holistic idea for the best understanding of a complex problem and strength them on scientific bases especially in infectious disease. In essence it constitutes the centre of attention of ecosystem in health may be the land. It also contributes the basic elements for the development of new investigations in this field(AU)

The Distribution of Ammonia Nitrogen in Groundwater of Shunyi and Its Influencing Factors / 环境与健康杂志

Objective To discover the distribution of ammonia nitrogen in groundwater of Shunyi District and its influencing factors. Methods 286 monitored points in low-flow period and 100 in high-flow period were chosen in 19 towns in Shunyi District. Concentrations of ammonia nitrogen, iron and manganese, and the total bacterial count of water samples were determined and evaluated based on the Guidelines for Drinking Water Quality and related standard during Jan.-Mar., Aug.-Sep., in 2005. Results All the monitored points were deep groundwater. The median of ammonia nitrogen concentration in groundwater was 0.010 mg/L in low-flow period, and 0.140 mg/L in high-flow period. The relativity was not found between the concentration of ammonia nitrogen,total bacterial count in water sample and pollution source around the well. However the concentration of ammonia nitrogen was positively correlated with the concentration of nitrite nitrogen(r=0.224, P