The effects of the component gradient distribution at interfacial zone between the layers on mechanical behaivor of the layered cement-based materials were studied.

The flexural performance of steel fiber gradient distribution reinforced concrete;

Study on the variation of landscape pattern and the gradient distribution of wetland in the Xianghai Nature Reserve;

Gradient distribution of soil N,P,and K along the distance from Picea mongolica seedlings root surface;

It was showed that the temperature grads and the contaminant gas mass grads were less than zero when the humidity grads and additional diffusion coefficient were both positive/negative,otherwise the two grads were more than zero.