A mathematical model for the calculation of sediment at the tail of tributary under condition of flow backwards is established, and the model is used to simulate the scouring and sedimentation deformations of the riverbed at a tributary of Yangtze River, Juzhang River, in this paper.

In experiment,how to avoid and how to deal with electric current flow-backwards questions during series-regulated and series-connected steady voltage power supply of emmitor output.

Feasibility of preventing impact of seawater encroachment by reverse osmosis predemineralization;