为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Zinc ions (Zn2+), known to be a novel intracellular second messenger related to various biological functions, have been ......

An organic macromolecule,poly(1-vinylimidazole),with an appropriate polymerization degree was proposed and mixed with wa......