Experimental study on resilient modulus of soil reinforced by biaxial geogrid;

For conducting experimental study on alleviating bump at bridge-head,a method using biaxial geogrid reinforcement together with a short approach slab was applied in the approach embankment of a bridge in Connecting Expressway of Wuhan Yangluo Bridge across the Yangtze River.

The expansive soil samples reinforced with biaxial geogrid are adopted to carry out a series of tests at different dry density.

In this paper,the finite element method is used to study bridgehead embankment reinforced by two-way tensioned geogrid for the purpose of controlling vehicle bumping at bridgehead and to analyze the laws of influences of the geogrid layer spacing on the settlement,vertical additional stress distribution of the embankment and on the tensile stress and tensile strain of the geogrid.

A silty sand-embankment reinforced by two-way tensioned geogrid was constructed.

Test study on frictional strength of interlock blocks and two-way geogrids;

Test study on interaction characteristics between two-way geogrids and clay;

Transient characteristic analysis of a CMOS circuit based on a double-gate dual-strained channel SOI MOSFET with the effective gate length scaling down to 25nm is presented.

A novel fully-depleted SOI device structure with a double-gate and dual-strained channel is presented.

The bipolar theory of field-effect transistor is introduced to replace the 55-year-old classic unipolar theory invented by Shockley in 1952 in order to account for the characteristics observed in recent double-gate nanometer silicon MOS field-effect transistors.