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Therefore, by reasonable use of rice straw resources to improve the utilization rate of straw nutrients returning plays an important role in the reduction of fertilizer amount, soil fertility improvement, reduction of production cost and improvement of farmland ecological environment With the implementation of the “one hundred billion catties of grain production project”, rice in Heilongjiang province has developed rapidly and the planting area has reached 2.946 million hectares in 2011[4], and the straw stalk output reached 15.597 million tons[5], however, the systematic research in view of effects of nitrogen amount on yield and nutrient absorption of cold land japonica rice under the condition of straw returning of Heilongjiang province were less.
The data processing and statistical analysis were used by Excel 2003 and SPSS 17.0, and the significant differences between the groups were analyzed by using Duncan’s method.

7.415 7.005 6.775 7.065 0.190 L5 6.220 6.135 5.520 6.455 5.659 6.790 5.570 6.500 6.106 0.476 L6 6.255 5.780 6.100 5.800 6.300 5.970 6.475 5.845 6.065 0.258 L7 6.710 6.760 6.840 6.745 6.425 6.865 6.970 6.760 6.759 0.158 L8 6.665 6.060 6.52 5.785 6.410 6.165 6.495 6.075 6.271 0.296 L9 6.590 5.825 6.765 6.100 6.760 5.800 6.545 6.100 6.310 0.401 L10 6.845 8.085 6.770 7.700 6.935 7.625 6.760 7.105 7.228 0.505 L11 7.745 6.580 7.495 6.450 7.800 6.940 6.640 7.005 7.081 0.534 L12 6.110 6.045 6.505 6.190 6.570 6.205 6.980 6.365 6.371 0.307 L13 7.360 6.900 7.505 6.805 7.005 7.155 7.405 7.455 7.198 0.270 L14 6.800 6.405 6.735 6.330 6.645 6.080 6.830 6.650 6.559 0.262 L15 7.125 6.085 6.305 6.445 6.410 6.360 6.715 6.400 6.480 0.312 L16 6.915 6.390 6.705 7.015 6.870 6.900 7.275 6.935 6.875 0.253 L17 6.710 6.760 6.840 6.745 6.425 6.865 6.970 6.760 6.759 0.158 L18 6.285 6.200 6.045 6.235 6.220 6.240 6.160 6.250 6.204 0.074 The effects of setting parameters on the warpage were determined by utilizing data
According to the Fig. 3, the reduction of pressure difference along the melt flow path led to the decline of part deformation.
The reduction of pressure gradient along the radial flow path inside the cavity led to the decline of part deformation.

Adopt Excel and SPSS software to make statistical analysis on experimental data.
As for groups with 15-day ensiling, the decreasing range of their pH value tends to be gentle, and this is because the low pH value in pineapple leaf residue silage results in reduction of metabolism speed of lactic acid bacteria and the proliferation speed of lactic acid bacteria is restricted, which is consistent with Yimin Cai’s report[11].
Furthermore, the ensiling fermentation speed and fermentation degree will also influence fatty acid content, especially result in reduction of content of unsaturated fatty acid.

It is found that 13% reduction in overall weight gain for coated superni 75 and superni 718 in comparison with the bare superni 75 and superni 718, where as coated superfer 800H showed 30% reduction in weight gain as compared to bare superfer 800H.
Weight gain data for coated and bare superalloys reveled that (Fig. 3), initially, the weight gain was higher during first few cycles; further, subsequent increase in weight gain is gradual for coated superalloys, where as uncoated superalloys increases continuously.

The blockage will spread gradually to the entire urban road network system, resulting in the reduction of network system reliability.
Under the influence of earthquake, the utility of road sections and intersections in a road network depends on its influencing degree, the effect of which is mainly represented by the decline of traffic capacity, i.e. the reduction of component reliability.
According to data analysis, group 1,2,3 and intersection components (11), (13), (20) need concentrative maintenance, reinforcement and restoration; group 1,2,3 and intersection components (9), (11), (13) need priority of capacity extension.

Common methods for controlling nitrous oxides are the selective catalytic reduction (SCR) of NOx and the selective non-catalytic reduction (SNCR) of NOx.
The adsorption isotherms of NOx and mercury were obtained to evaluate the experimental data of adsorption.

Among these Casson fluid is one of the non – Newtonian fluids which fits rheological data better than other models for many materials as it behaves like an elastic solid and which exhibits yield stress in the constitutive equation.
Fig.6 illustrates the influence of temperature with γ and it is noticed that thermal boundary layer increases with a rise in the curvature parameter due to reduction in the cylinder surface area and fluid temperature rises.
From fig.16 it is observed that the temperature increases with the increasing values of Lewis number Le whereas from fig.17 we notice that for larger values of Lewis number Le the concentration decreases and there will be reduction in the concentration boundary layer thickness.

This will ensure the equipping of the surface of the journals with copper during the entire period of operation, reducing wear and preventing the seizure of planes, reducing the running-in period, increasing the resource of the crankshaft, saving energy due to the reduction of friction.
As a result of mathematical processing of experimental data, the coefficients were determined and the following second-order regression equation in canonical form was obtained: (2) Where y is run-in time, engine hours; х1 is number of turns of wire, vol.; х2 is the width of the square wire, mm.
As a result of the tests, a second-order regression equation was obtained, which takes into account factors such as the number of wire turns and the width of a square wire that affect the reduction of the engine running-in time. 4.

The data bit in BPM was designed as a single magnetic domain, allowing the Stoner-Wohlfarth model to be used for studying magnetization reversal in the patterned media.
As the areal density increases, the size of the island features and the write pole size decrease, resulting in a reduction of HSW.
As the areal density increases, the BER of BPM also increases due to the reduction in island size and spacing.

Evidence Theory for Uncertainty Quantification of Portal Frames with Semi-rigid Connections Hesheng Tang1, 2a, Jiao Wang1,b, Yu Su1,c, Songtao Xue3,d 1 Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China 2 State Key Laboratory of Disaster Prevention in Civil Engineering, Tongji University, Shanghai 200092, China 3 Department of Architecture, Tohoku Institute of Technology, Sendai, 982-8577, Japan athstj@tongji.edu.cn, bwangjiao_34@126.com, csu_jingde@126.com, dxue@tongji.edu.cn Key words: portal frame, semi-rigid connection, evidence theory, differential evolution, uncertainty Abstract: The buckling load or the equivalent buckling length factor of the portal frame structures is greatly influenced by stiffness of bracing elements and semi-rigid connections.
Due to lack of knowledge or incomplete, inaccurate, unclear information in the modeling, simulation, measurement and design, there are limitations in using only one framework (probability theory) to quantify the uncertainty in a system because of the impreciseness of data or knowledge.
Acknowledgments This study was supported by the National Natural Science Foundation of China (Grant No. 51178337 and 50708076), Basic Research of the State Key Laboratory for Disaster Reduction in Civil Engineering of Tongji University(Grant No.