By Controlling proper concentration of sodium carbonate in grog digestion process, occurrence of secondary reaction can be effectively curbed, settling property of red mud and digestion rate of Al 2O 3 and Na 2O can be improved.

The influence of CO_3￣(2-) concentrations on thecurrent efficiency of C_2O_6￣(2-) anodic formation;

On the basis of the analysis of the influences of the CVD process parameters such as the substrate temperature, carbon source concentration and reaction pressure on mechanical properties of diamond-coated thin film tools, a new technical method of intermittent deposition is proposed to improve mechanical properties of HFCVD diamo.

To lower the surface roughness of diamond thin films by improving the CVD depositing technology, two kinds of new technical methods are proposed by appropriately increasing the carbon source concentration and controlling the deposition pressure.

According to the actual production condition of RH-MFB in one plant,the coupling mathematic model of molten steel flow and carbon concentration distribution in ladle is established by using the commercial code CFX.

The carbon concentration distribution in Fe-5.

Based on FEM mathematical models to describe the carburization process and practical carburization technical conditions,two-step gear carburization is simulated by programming,from which the carbon content distribution in carburization process is obtained.

Further,statistical analysis revealed significant correlations between leaf construction cost and leaf carbon content,nitrogen content and ash content(Ash) in invasive species.