However in engineering investigation, the strata--tufa similar to the dolomitic limestone, exists locally above the Palang group of Eocambrian system.

The dffects of bubbles and jet-flow produced by fast-flowing water are affirmed to have deci-sive influences on tufa deposition.

Human activities carry out in certain valleys,the effects of soil erosion that result from human activities will be shown in the river silt content and the silt will be attached to the sediment in the travertine with the continuous deposition of travertine.

Study of synthesis and properties of dendritic polyether surfactants;

Synthesis of dendritic quaternary ammonium salt containing three stearamido groups;

Star and Dendritic Ferrocenyl Poly (metallocenes);