搜索结果: 1-3 共查到“环境工程学 R-Tree”相关记录3条 . 查询时间(0.125 秒)
Investigation of Compliance with the ANSI Z133.1 - 2006 Safety Standard in the New England Tree Care Industry
arboriculture tree care standard
2014/11/26
Arborists are exposed to many occupational hazards and experience more than three times the overall fatality rate of all U.S. workers. Investigations into fatal incidents lead to a better understandin...
Libby Amphibole Contamination in Tree Bark Surrounding Historical Vermiculite Processing Facilities
Vermiculite Asbestos Amphibole Libby Exfoliation Tree Bark
2013/3/12
Over a 70-year period, a mine near Libby, MT supplied nearly 80% of the world’s vermiculite. Raw vermiculite, which was contaminated with naturally occurring amphibole in veins throughout the deposit,...
Controls on sulfur content in tree rings of Norway spruce and European beech at a heavily polluted site
sulfur tree rings spruce beech pollution
2017/8/9
Search for a biogeochemical archive of past sulfur pollution is motivated by the need to predict ecosystem health. Sofar, no indicator of local-scale S pollution has existed, while long-range transpor...
