The relations between electronic structure,chemical bonds and thermoelectric property of misfit layered cobaltite of Ca_3Co_4 O_9 are studied using the den- sity function and discrete variation method(DFT-DVM).

This paper reviews that the progress of studies on synthesizing both the nanotubes combined by chemical bonds and the tubimaterials formed by intermolecular forces.

On the basis of the constituent chemical bonds of crystal materials,the application of chemical bond viewpoint in the search for new type nonlinear optical crystal materials was studied and disscussed in the present work.

The new calculation of the electronegative scale and the ionicity of chemical bond(Ⅲ);

Spectroscopic ellipsometry study of the chemical bonds of carbon films;

The relations between composition,structure,chemical bond and property of TiC and Fe single phase,composites of TiC ceramic and doped series,and composites of TiC/Fe ceramic and doped series were researched by using density function and discrete variation method(DFT-DVM).

A few chemical bonding modes are present between n-HA and PA, such as ligand bonding of COO~- and Ca~(2+),hydrogen bonding of —NH and —OH, C=O and —OH as well as —NH and PO~(3-)_4.

Pyrenebutyric acid was immobilized by volatilization of solvent, chemical bonding and sol - gel method respectively.

After analyzing of the modified pre and past fly ash fiber by IR and SEM characterizations, the results showed that aluminum zirconium complex coupling agent CF103 connected with fly ash fiber surface through chemical bonding and coated it evenly.