Matching method estimate of the average treatment effect of a job training program

A structural regression model with measurement errors is proposed to study the impact of measurement errors on estimating the average treatment effect under exchangeable conditions.

Treatment effect of vertical flow wetland to domestic wastewater under different hydraulic loading;

Study on the seasonal variation law of the sewage treatment effect;

The treatment effect analysis of underpass back filling lime-soil behind abutment;

The hydrodynamic characteristics in the oxidation ditch have great effects on the distributions of the dissolved oxygen and the velocity gradient,and then make important effects on the removal efficiency and energy consumption.

To enhance removal efficiency and to mitigate membrane fouling,submerged membrane bioreactor and Bioferric process are combined to Bioferric-SMBR.

For the turbidity of water treated by the present techniques at water plants cannot meet the standards,an experimental study is performed on removal efficiency and mechanism of turbidity in the water from Yellow River through enhanced swirling clarifier with special structures.

Comparison of treatment efficiency of inorganic coagulant and cationic high molecular polymer for low temperature and low turbidity water treatment;

In this article,analyzing the efficiency in refinery wastewater treatment of oxidation ditch,put forward each factors on treatment efficiency,and discussed the countermeasures and suggests.

And, its treatment efficiency is high,reaching the national discharge standards.

This paper has analyzed the pile s design parameter selection,the construction influence factors and the processing effects,obtained the selection scope for the de- sign parameter,the contrast results for the design and the processing effect,and some notices in the construction process.