Objective:To investigate the anchorage ability and histological characteristic of microimplants under immediate and continuous orthodontic loadings.

the shape coefficient formed according to different excavation area should be adopted properly, but also the man-made resistance of support during excavation should be taken into account specially.

Study of ability to pay for CMS by rural population;

Applying the method of opportunity cost,this paper estimated the ability to pay for the different types of basic healthcare (including acute illness care,treatment of chronic diseases,and hospital admission) of the rural households especially the poor households in China.

L ogistic regression analysis on payment ability and paymentwilling of demand side;

Objective Appraise the complications in surgery to the patients ability of payment ability.

Analyzing the payment capability of rural resident in new rural cooperative medical care——an sample from Chuzhou in Anhui Province;

Water resources supporting capacity for regional development in China;

Based on the characteristics of the current water resources in Yantai city,the supporting capacity of water resources was analyzed and evaluated of thirteen individual districts in Yantai city using the indices system,which was founded with seven kinds of indices among three factors: amount and development of water resources,regional development and ecological environment.

Based on the characteristics of current water resources in Yantai City,Shandong Province,the supporting capacity of water resources of thirteen individual districts in the city is analyzed and evaluated using the index system consisting of seven indices in three categories of the amount of water resources and their exploitation,regional development and ecological environment.