In this paper, the authors outlined the principles for selecting the structure, protection tube, marker-pole, centralizer and marker-base of land subsidence monitoring marker holes, and also intro-duced in detail the technology and quality control measures for constructing various marker holes.

Analysis on correlation of monitoring indexes of wastewater in oxidation ditch;

The brief of eco-environment monitoring index system;

Study on monitoring index of individual exposure dose of volatile organic compounds in environment;

The article introduced the structure of mini and multi - parameter sea and ocean environmental monitering buoy and it's key technic and new idea in the technic, the article also introduced that the main function and technical specifications .

When analyzing the monitoring data of Shanghai Zhadian Gas Turbine Power Plant,we found it hard to define the monitoring standardsline of thermal parameters as the atmospheric temperature and power load varied during the whole year.

When analyzing the monitoring data of Shanghai Zhadian Gas Turbine Power Plant,it is hard to define the monitoring standardsline of thermal parameters as the atmospheric temperature and power load vary during the whole year.

Analysis on target surveillance of cardiac surgical site infection;