Around the proper objective and scale of the ecological environment and the core task of the reasonable utilization of water resources,the paper studies ecological evolution and ecological water demand of Ningxia using the techniques o.

By comparing the effects of different screw configurations in the initial stages on the morphology evolution of PC/PE blend,it is found that the melting and breaking up of the dispersed phase are obviously influenced in th.

Utilizing the historical data and the Landsat TM data,the paper studies the dynamic change of the wetland since 1949,and studies the types of the coastal wetland between the Douhe and Luanhe rivers from 1987 to 2004.

Research on the dynamic evolution of London's maritime center and UK shipping industry

According to a developed model for transient behaviors of tungsten-inert- gas arc weldpool,the dynamic evolution process of surface depression of full-penetrated weldpool in quasi-steady state after changing welding process parameters is numerically simulated,and the basic data obtained can be used in designing weld penetration control system.

As the traditional algorithm for the dynamic evolution of Hybrid Petri Nets(HPN) may not be used for many HPN models, a new method to construct evolution graph for HPN was proposed.