supported by the National Natural Science Foundation of China(Grant Nos.91114204 and 40972151)
Age determinations of the Triassic lithostratigraphic units of the Yanshan belt were previously based on plant fossils and regional correlations of lithologies. The Liujiagou and Heshanggou Formations were assigned as...
supported by the National Natural Science Foundation of China (No. 40972151);the National HiTech Research and Development Program (863) of China(No. 2009AA064001)
The adsorption of cationic-nonionic mixed surfactant onto bentonite and its effect on bentonite structure were investigated. The objective was to improve the understanding of surfactant behavior on clay mineral for it...