Introducción. En la producción de cultivos se llama "cubrimiento" a la tela de plástico colocada a cierta altura del suelo de cultivo. Tal tela tiene varias ventajas. Mejora la estructura del suelo, ayuda a mantener una temperatura uniforme en el suelo, limita la pérdida de nutrientes del...

This study associates levels of exposure to ozone and fine particulate matter in the South Coast Air Basin of California with resident income, race, age and education. A Regional Human Exposure Model provides the basis for estimating exposure not only on location or residence, but also on...

Air quality in the South Coast Air Basin of southern California has improved significantly over the past decade, although pollution levels continue to exceed health-based standards on a significant number of days. This study estimates the decline in ozone-related school absences in southern...

Policymakers in the legislative and regulatory arenas face increasing public expectations that authorities will both promulgate and implement strict environmental programs. At the same time, the aggregate cost of such programs is rising and is impacting economic sectors previously untouched. In...

Policymakers in the legislative and regulatory arenas face increasing public expectations that authorities will both promulgate and implement strict environmental programs. At the same time, the aggregate cost of such programs is rising and is impacting economic sectors previously untouched. In...