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【答案】应助回帖
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sltmac(金币+3): 辛苦了 2011-09-03 14:35:05
qiny8269(金币+80, 翻译EPI+1): 非常感谢！ 2011-09-03 18:01:53
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China is rich in brown coal resources and Yunnan is the second largest brown coal growing area in the country. As we know, brown coal is low-cost coal and its industrial application value is low too, so the reasonabe development and effective use of brown coal is a subject worthy of further study. On the basis of solid previous work on this subject, we chose humic acid products prepared by brown coal—one of the four ways of brown coal utilizations home and abroad—as the breakthrough point to oxidate and degrade, extract and purify the humic acid from Yunnan’s advantageous brown coal resource by using the new utilization technology based on the tranditional one. We set the humic acid oxidated and degraded from the green brown coal as our research object, and characterized it by using modern analysis methods in order to explore its complex molecular structure, to explain the variation law of the functional group of humic acid, and to establish the quality standard and analysis methods of humic acid oxidated and degraded from the green brown coal in Yunnan province. Meanwhile, we also studied its hypoglycemic, anti-ulcer and anti-cancer activity and made necessary safety evaluation to lay foundations for such aspects as the effective use of brown coal resources in Yunnan, the potential for deep mining of humic acid for brown coal, and the development of the humic acid resources. The completion of the project will provide the issue of sustainable and effective use of the non-renewable brown coal resources with basis. |
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