This paper introduces the structure and model of elementary particles and points out that there is no limit to man s exploration on microworld.

The mystery of physical microcosm is revealed through a survey of the development of physics-elements,atoms,atomic nuclei and elementary particles, especially human exploration of material structure in the past sixty years.

It is hypothesized that leptons and hadrons are all composed of unit particles and elementary particle reactions are the processes of pair production and annihilation of a unit partide and its antiparticle, change from a unit particle pair to another and recombination of unit particles.

Interactions between elementary particles and vacuum;

The author brings the relation ship between elementary particles and quality-energy equation to light.

Web-based electronic catalogue of mechano-electronic product;

Using object orient database software - PowerBuilder, this paper illustrates the design thinking and realization method of tool electronic catalogue system.

In this paper, the separation, identification and binding dynamics of the insect Bt receptor protein, and the relationships between Bt toxicity, Bt resistance, receptor proteins, and molecular nature are reviewed.

Domain knowledge resource management based on sub-ontology;

Study on Extracting Sub-ontology from Multiple Ontology;

Extraction and simplification of user sub-ontology;