By some main technological parameters (consumption of adhesive,hot-pressing pressure) and some basic physical indexes (density,moisture content,thickness),regression mathematics models are obtained when the main physical and mechanical properties of particleboard are analyzed by the method of multi-variance linear regression in order to predict other physical and mechanical properties.

A theoretical,along-the-channel model was developed to design fuel channels for H2/air proton exchange membrane fuel cell.

In order to carry out the construction of open channel closure favorably, 1D and 2D flow mathematical models were developed and integrated.

Then a 2-dimensional flow mathematical model in channel bends is set up and used to simulate the flow field on Feiyun River in the period of low or high water and in spring tide, middle tide and neap tide respectivey.

A finite element, method was adopted for weighted convergent mass establishing 2-D flow mathematical model in flow simulation of channel bends, by which the flow pattern of middle and lower channel bends of Li River in the discharge of water transportation was simulated and the calculated results of which concerning water level, flow velocity and discharge were coincident well with measured data.