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关于大宁煤矿瓦斯利用方法的探讨 被引量:1
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作者 员利民 《中国煤层气》 2011年第3期37-39,共3页
本文针对山西省大宁煤矿在生产过程中抽放的高低浓度瓦斯及现有的瓦斯供热装备,因势利导,重新规划,提出一套瓦斯分层次利用方式发电供热,达到其能源效率、经济效益最大化。
关键词 高低浓度瓦斯 分层次利用 效率效益 最大化
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Study on Land Use Regionalization in Henan Province
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作者 田燕 《Agricultural Science & Technology》 CAS 2017年第11期2139-2143,2184,共6页
According to the natural ecology and socio-economic conditions in Henan Province, a land use regionalization index system with 6 factors and 24 factor layers was constructed by combining with the characteristics of la... According to the natural ecology and socio-economic conditions in Henan Province, a land use regionalization index system with 6 factors and 24 factor layers was constructed by combining with the characteristics of land use in Henan Province. Expert scoring method was used to determine the weights of the indicators. Based on the similarities and differences of these factors in the index system at county (city, district) levels, hierarchical clustering method was used to make the quantitative analysis to the land use regionalization in Henan Province. And constrastive analysis and qualitative analysis were made to the regionalization scheme by combining with the acutal conditions in the counties (cities, districts), and finally, Henan Province was classified into 6 regions. 展开更多
关键词 Land use regionalization Index system Hierarchical clustering analysis method Henan Province
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