This paper reviews the applied range,the computational method and the recent development of themesoscale in the computational materials science,focussing on the applications of the space discrete dislocation dynam-ics,the phase field dynamics and the cellular automata.

In this dissertation, microstructure evolution of a new metastable-type TB8 alloy after hot deformation and solution treatment at mesoscale have been studied by employing plastic forming, metallurgy, finite element method, crystal plasticity theory, and Cellular Automaton method, etc.

First,a high precision meso scale machine tool system was developed for meso machining research.

01 to 1mm known as meso scale.

A modified model was established to depict the deformation and retraction process of dispersed LC-5000 droplet in PC,which was based on the ellipsoid model by introducing mesoscopic size variation of LCP domain in flow and the structure dependent interfacial tension.

Ecological health assessment at the landscape scale based on RS and GIS,A case study from the New District of a Bay-type city;

Regional ecological security on landscape scale;

By using Landsat TM satellite images and combined with field investigation,the information of farmland boundaries in upper Minjiang River reaches was derived,and the edge effect of forestland-farmland boundary at landscape scale was investigated.

In this paper,based on the combination scale of the different catalytic active sites,the integrated system,which is composed of several catalytic reactions,is divided into three sub-systems:nano-scale,micro-scale and macro-scale.

The elasto-plastic damage and failure problem of mode I crack was studied at macro-scale level and meso-scale level respectively.