Abstract One of the important issues today is problem global warming and climate change. Global change are phenomena increasing concentrations greenhouse gases in atmosphere due to various human activities as a result economic development activities. The success can be seen from increase value national output form gross domestic income. Therefore, purpose this study determine effect measured by...

OBJECTIVE To develop a population-based matrix of job-exposure to crystalline silica in Brazil and to estimate its validity. METHODS An epidemiologist and an industrial hygienist developed a matrix of job-exposure in four stages: coding of occupation variable; coding of industry variable; consensual exposure classification between researchers; and estimate of registered workforce in 1995 for ...

An increase in quarrying, open-cast mining and road traffic suggest that dust deposition onto vegetation may be increasing. This review describes the physical and chemical characters of a range of dust types. The effects of dust on crops, grasslands, heathlands, trees and woodlands, arctic bryophyte and lichen communities are identified. Dust may affect photosynthesis, respiration, transpiratio...

In many countries, the work of mining, quarrying, construction of tunnels and galleries, abrasive jet cleaning and smelting continue to present significant risks of silica exposure and silicosis epidemics still occur, even in developed countries. Patients with silicosis are particularly susceptible to opportunistic lung infections such as aspergillosis and tuberculosis. Occasionally silicosis i...