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By calculation from XRD data, the average grain size of the powders is 29nm while the grain size of Si3N4 powder prepared by sol-gel carbon thermal process [5] at 1500 o C is 100~400nm.
This reveals that when the addition of glucose is higher than the theoretical value, the carbon thermal reduction will be promoted and the amorphous SiO2 will be fully turned into Si3N4 crystal.

Figure 4 – Effect of initial conditions on the uranium crystal growth Increase of the uranium crystal rate, depending on reduction of the initial temperature (C0 = const) and on the increase of the initial concentration, (T0 = const), takes place, since in both cases there is an increase of the initial supersaturation.
Further, it is planned to apply the approach of cellular automata of uranium to model process of crystallization of uranyl nitrate hydroxide to further test the model obtained with the experimental data using the linear crystallizer.

Effect of fractal dimension of powder activated carbon on SO2 adsorption Bing Li1, 3, a, Jianming Xue1, Yueyang Xu1, Hongliang Wang1, Chunyuan Ma2, Jianmin Chen3 1GuoDian Science and Technology Research Institute, No.10, Pudong Road, Nanjing 210031, Jiangsu Province, China 2National Engineering Laboratory for Coal-fired Pollutants Emission Reduction, Shandong University, No.17923, Jingshi Road, Jinan 250061, Shandong Province, China 3School of Environmental Science and Engineering, Shandong University, No.27, Shanda South Road, Jinan 250100, Shandong Province, China a13869187893@163.com Keywords: activated carbon, SO2, adsorption, fractal dimension.
Each gas is first individually introduced through a mass flow controller (Sevenstar CS200) and then mixed in the mixing chamber. 1-Gas cylinder; 2-Valve; 3-Mass flow controller; 4-Water; 5-Gas mixer; 6-Water bath; 7-Reactor; 8-Electric heating device; 9-FT-IR gas analyzer; 10-Data collection system Fig. 1 Schematic diagram of the experimental system All experiments are conducted with a gas flow of 200 ml/min (at 1 bar, 298 K).

In recent years, BEM is used for structural performance analysis for the reason that BEM can decrease unknowns and make the mesh generation much easier because of the dimension reduction of the Boundary Integral Equation(BIE) formulations[3].
Eq. 1 has the matrix representation: . (2) where and and are 3 by 3 submatrices: . (3) From the Eq. 3 above, it is easy to find that the computations of and just need the data of element e and f are irrelative of the other elements.

In the condition of microwave radiation, polar water molecules and droplet of electric would quickly turn or produce charge displacement with the change of electric field, thus disturbing the orderly arrangement of liquid-liquid interface charge, and causing the destruction of electric double layer structure and reduction of Zeta potential.
According to the experimental data, we determine the intensity for 2w/g, the irradiation time for 4min, cement ratio for 1:3, PH value for 2 when the processing amount is large.

Sampling and data collection.
Spatial distribution of Available N indicated the deficiency of N in farmland soils of Hainan, which can be results of fertilization and Multiple Cropping Index (MCI) cropping, which led to a reduction of Alkali-hydrolyzable (Available) N in a large area.

Reduction the number of DOF is needed to meet the requirement of computer numerical calculation.
Second is to deal with large complexity system vibration, and third is to combine theory and Numerical analysis with experiment data closely.

At present, selective catalytic reduction (SCR) of NOx with ammonia(NH3)is one of the most efficient methods for removing nitrogen oxides emissions in the exhaust gas from stationary sources to meet stringent emission regulations[1,2].
The optimal preparation condition of catalysts was normally obtained through comparing mass experimental data as the action factors were complex and variable.

Table 1 Conversion data of butane over a range of temperature 353-413K at constant pressure of 1.5 x 10 5 N/m 2 S/No Time (secs) Conversion,X T=353K T=373K T=393K T=413K 1 2 3 4 5 6 300 600 900 1200 1500 1800 0.15738 0.14339 0.75001 0.7600 0.7800 0.70002 0.34201 0.5400 0.64112 0.7680 0.81002 0.6500 0.4800 0.62002 0.8097 0.8674 0.8696 0.70001 0.54002 0.6400 0.9130 0.8200 0.78002 0.7411 Table 2 Analysis of the clay sample used.
This point may be regarded as optimal value of some sort and increasing the process parameters beyond this point would lead to a decrease in conversion and hence reduction in the performance of the catalyst activity.

Tawakoli[2] found that the grinding force has a 70% reduction and the grinding efficiency is obviously improved by applying ultrasonic vibration on the workpiece, and also the thermal damage is significantly reduced.
Wang[5] simulated the erosive wear under different impact factors using SPH, the results are in good agreement with the experimental data.