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Arimar Leal Vieira Antônio Carlos Reis de Freitas 《Journal of Material Cycles and Waste Management》2002,4(2):111-116
In the middle of the 1970s, the introduction of large industrial and agricultural projects in Brazilian Amazonia created
a situation of violence and loss of land used by farming families. In this context, the process of migration to the metropolitan
region of Belém, which is principally in the interior of the state of Pará, was intensified. Excluded by the formal labor
market, these families started to collect disposed material as scavengers. The material collected is found in landfills, streets,
and open dumping areas. The main purpose of this research is to understand the social and environmental relations inherent
in collection and recycling activities in the Amazon Region.
Received: August 19, 2001 / Accepted: November 21, 2001 相似文献
22.
工业锅炉受热面积灰、结渣,层燃炉炉拱结焦,危害较大,造成蒸发量小,蒸汽压力低,炉拱易损等。本文分析了煤中灰的类型及主要影响因素和防止方法。 相似文献