Investigation on the filtration property of nonwoven geotextiles;

Digital image analysis to determine pore size distribution of filtration materials;

The study of the structure stability simulated tests in soil-geotextile filtration system;

Application of capillary pervious drain belt in earth dam filter drain;

Based on comparative studies of Chinese dike design code with that of foreign countries, it is suggested that both filter and cushion layers should be treated as important components in dike construction and their design criteria be included in China dike design code which is under revision.

Clogging criterion is an important part of filter criterion.

Estimation of Q and inverse Q filtering for prestack reflected PP-and converted PS-waves

Ai- ming at these problems,the inverse Q filtering method was used in the 3D seismic data to improve the resolution.

This paper,first based on the exposition of geological conditions, structure and seepage reason of the dam, raises treatment a scheme:opposite filter pressing slope and horizontal self\|flowing well to get rid of seepage; second calculates the stability of tailings dam treated; lastly introduces simply treating effect

Using inverse filtering to restore degraded images;

To implement high precision and on line measurement of linear motion errors, a novel error separation technique(EST) method named quadratic phase shift three point method was proposed, which is based on the data reconstruction and inverse filtering.

A novel technique for quadratic phase shift three - point method based on data reconstruction and inverse filtering is proposed in this paper, through which the spindle radial motion error can be separated and gained firstly, and the on - line measurement of motion error can be implemented successfully.