With the solution given to the resistance to earth against the anchoraged pile end under slip plane by ways of passive earth pressure,slip line and elastic wedge,the built-in depth was determined using the model.

A new numerical method, namely extended forward step method, was presented for the hydraulic analysis of the pipeline sprinkler irrigation system.

Determination of lead in surface water sample by graphite furnace atomic absorption spectroscopy with constantly re-coating the graphite tube and matrix modifier;