Removing process of light and soft impurity that is medium and low density is introduced.

Numerical simulation of light impurity production and diffusion in a centrifugal cascade;

An additional feed method was developed to reduce the light impurity concentrations at the product end of a purge cascade in a centrifuge cascade used to purge enriched uranium.

Study and Manufacture of Lightweight Heat-insulated and Refractory Flyash Bricks;

Study on a big aperture lightweight aspheric mirror manufacture;

The new multifunction wall composite material with characteristics of light weight and thermal insulation, is composed of light material which is made of foamed plastics of polystyrene based on gypsum , could enhance the surface strength of inorganic and organic coherence and solve the flaw of light material flowing up by adding a surface active reagent N produced by ourselves.

Using casting powder or P-slag, at the standpoint of green and environmental materials and composites of cement matrix, this thesis has researched the subject of "non-autoclave and compound-foamed cement wall-block with light weight".

The effect of raw material, addition, synthesizing temperature, holding time etc on properties of synthetic light weight mullite material was studied.

For improving the capability of floating islands and decreasing the pollution from organic wastes,it is necessary to develop a new type carrier of floating islands,which is light,highperformance and propitious to microbe's adhesion.

Lightweight structure is a new construction system, which based on the research about the structure and the material to make the building lighter and more transparent possible.