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Study on regional material flow analysis of Chengyang District in Qingdao 被引量:5
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作者 Zhou Zhenfeng Sun Yinglan Wang Jun 《Ecological Economy》 2006年第1期89-98,共10页
Base on the framework of material flow analsis (MFA) proposed by Eurostat, this paper collected related data and conducted a regional MFA for the Chengyang Districgt in Qingdao. The indicators such as Direct Materia... Base on the framework of material flow analsis (MFA) proposed by Eurostat, this paper collected related data and conducted a regional MFA for the Chengyang Districgt in Qingdao. The indicators such as Direct Material Input(DMI), Direct Material Consumption (DMC) and Exports are calculated or estimated for the period of year 1995 through 2004. Several derivable iudicators defining direct material productivity and material intenstiy are also evaluated and some valuable conclusions were drawn. DMI in absolute number increased from about 1645.9 kilotons in 1995to about 8052.5 kilotons in 2004. Imports contribute to about 47 to 69% of DMI, and the biggest component of imports is fossil fuel that approximatley accounts far 50% of imnports. DMI per capita of Chengyang District increased rapidly and reached 17. 4 tons in 2004. Compared with other five economies studied by WRI, material consumption intensity of Chengyang District is significantly lower than developed countries, which indicates that Chengyang District is still in a development stage The direct material productivity (actual GDP per DMI) increased 59.1% from 1995 to 2004 and has been higher than either of stadies in China, which indicates efficiency of resources utilization has improved obviously in Chengyang District. But there was significant increase in material input in the last decade, which shows that rapid increase of economy is highly dependent on requirement and consumption of natural resources. Therefore, in order to promote the sustainahility, it is essential to develop circular economy and improve utilization efficiency of resources. 展开更多
关键词 Regional material flow analysis Direct matertal input (DMI) dtrect material consumption (DMC) Direct material productivity Sustainable development
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以Tween20作增溶剂直接光度法对钴——双硫腙配合物的测定
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作者 赵桦萍 安华 《齐齐哈尔师范学院学报(自然科学版)》 1996年第4期34-36,共3页
本文研究了以Tween20作增溶剂钴与双硫腙生成配合物的吸收光谱、稳定性并且对酸度及显色剂用量等条件进行了选择.根据朗伯——比耳定律得到了该法测定钴的检量线及摩尔吸光系数.
关键词 Tween20 增溶剂 光度法 双硫腙 配合物
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