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Online since: December 2014
Authors: Zhen Wang, Yu Liu, Jia Chuan Chen, Hui Mei Wang
Influences of Laccase Mediator System on bleachability and fiber properties of APMP pulp Huimei Wang1, a, Yu Liu1, 2, 3, 4, b, Jiachuan Chen1, c, Zhen Wang1, d 1Key Laboratory of pulp and Paper Science &Technology of Ministry of Education, Qilu University of Technology, Jinan, Shandong 250353, P.
Experiment Materials APMP pulp was obtained from Shandong Dezhou Zhongsheng Maoyuan co., LTD.
The influence of LMS on fiber properties of APMP Using ESEM, the morphology of the material surface can be watched.
Journal of biotechnology79.2 (2000): 173-183
Online since: May 2013
Authors: Qiang Liu, Ke Tian Li, Xin Du Chen, Xiang Bo Ouyang, Wu Chen, Xin Chen
So when material has been pressed, most elastic deformation take place in the narrow parts,and there is almost no deformation take place in the branch parts.
Material is Stainless steel No.304 that data is shown in Table 1: Table 1 Material data of 304 Young's Modulus MPa Poisson's Ratio Bulk Modulus MPa Shear Modulus MPa 1.97e+005 0.28 1.4924e+005 76953 Results of top six order model analysis could be seen in Table 2: Table 2 Results of top six order modal analysis Mode A [Hz] B [Hz] C [Hz] D [Hz] 1. 1057.4 1081.3 1150.0 1378.2 2. 4005.5 4030.3 4034.4 4042.6 3. 4213.3 4265.1 4254.6 4238.9 4. 4777.9 4805.9 4812.8 4828.4 5. 5106.8 5210.5 5204.0 5197.6 6. 6548.9 7255.7 7258.2 7263.0 In the Table 2, “A” stands for the result of the model without spring; “B, C, D” stands for the result with spring that stiffniss is 300, 1000 and 3000N/mm; initial compression is 3mm.
Acknowledgements This work was financially Supported by Guangdong Innovative Research Team Program(No.201001G0104781202), and also supported by the Guangdong Provincial Science and Technology Project (2010B090400387, 2010B090400304, 2011A090200119, 2060403).
Further discussion about the natural frequency of the spring vibrator. 1994-2010 China Academic Journal Electronic Publishing House.
Online since: November 2006
Authors: Shi Zhao Shen, Chang Jun Wang, Cheng Yi, He Ping Xie
Introduction Concrete is a kind of standard brittle material and is easily fractured under cycle loading.
Deformation Characteristics of PHPFRC under Flexural Fatigue For most engineering materials under cycle loading, their curves of deformation varied with cycle ratio n/NF are generally presented three-stage: �) Inner damage nucleating; �) Inner damage developing steadily; � ) Inner damage developing with acceleration (shown in Fig. 2).
Acknowledgement Authors are grateful for the support of National Natural Science Foundation of China.
China Civil Engineering Journal, 2000, 34(6): 29-33,37.
Online since: July 2011
Authors: Zheng Ming Tong, Shu Jun Liang
Aluminum Hydrogen Energy Industry in China Zhengming Tong and Shujun Liang Department of Chemical Engineering, University of Shanghai for Science and Technology, Shanghai, China shujun0502@163.com Keywords: hydrogen energy, aluminum, environment, renewable energy Abstract.
An essential advantage of hydrogen as a fuel consists in that the raw material is almost exhaustless.
Z., Concept of aluminum hydrogen energy industry, Russian Journal of General Chemistry, 2007
[4] Bououdina, M., Grant, D.and Walker, G, Review on hydrogen absorbing materials— Structure, microstructure, and thermodynamic properties, Int.
Online since: October 2012
Authors: Yu Wei He, Jin Rong Jiang
Although different considerations of scholars have not got final conclusion, some factors have emerged as being regarded as important, for example: technical improvement, substitution of materials, demand changes in the structure, saturation of markets and regulatory action ( [Bernardini and Galli, 1993] and [Cleveland and Ruth, 1999] ).
In initial stage of industrialization, pollution grows faster than GDP as high priority are given to material output[5] ,which inevitably results more use of natural resources and emission of pollutants, thus add more pressure to environment return [6].
China calls for change, and technology innovation plays a significant role with the tendency of low-carbon concept, Acknowledgment This work was supported by the Major International Joint Research Program of the National Natural Science Foundation of China (Grant No. 71020107027), the National High Technology Research and Development Major Program of China (863 Program) (Grant No. 2008AA04A107), 985 and 211 project of Sichuan university.
Journal of Environmental Economics and Management, 42(2001), pp. 310–335
Online since: July 2011
Authors: Hung Chi Song, Shih Ming Chen
The first atrium was covered by the permeable light material, and integrated into a whole space with the second hall. 4.
Part of the building gradually lost of the ancient taste due to improperly use materials for the renovation.
[3] Wu, Qing-Xuan, Issue of Heritage Space in Taiwan: A Perspective Right and Equity, Journal of City Planning, 24[2](1997), pp.144
Department of Cultural Heritage Conservation, National Yunlin University of Science and Technology, 2007, p28.
Online since: January 2010
Authors: Amporn Poyai, S. Sophitpan, C. Hruanun, S. Porntheeraphat, N. Somwang, Win Bunjongpru, Sirapat Pratontep, J. Nukaew, A. Pankiew
., Journal of electronics materials,Vol.34, No.8, 2005
Narayandass and et al., Material Science and Engineering A445-446, (2007), 223-236
Online since: November 2012
Authors: Yan Jue Gong, Fu Zhao, Chun Ling Meng, Bin Liu, Yuan Yuan Zhang
Finite Element Analysis of Tube Tower for Vertical Axis Wind Turbine Liu Bin1, a, Zhang Yuanyuan2, b, Zhao Fu1, c, Gong Yanjue1, d, Meng Chunling1, e 1School of Material and Mechanical Engineering, Beijing Technology and Business University, China 2China Ship Research and Development Academy apotato_bin@163.com, b542907131@qq.com, czhaoffu@163.com, dyjgong@th.btbu.edu.cn, emengcl@th.btbu.edu.cn Keywords: vertical axis wind turbine; tube tower; finite element analysis Abstract: It is very significant for the vertical axis wind turbine to design the best support structure with high strength and stiffness.
The material is high strength dilute alloy steel Q345, the elastic modulus is 2.1E+11N/m^2, the poisson ratio is 0.3, the density is 7850kg/m^3 and the yield strength is 3.45E+8Pa.
For the most basic problem involving a linear elastic material which obeys Hooke’s Law, the matrix equations take the form of a dynamic three dimensional spring mass system [5].
References [1] Zhao Rongzhen, Lv Gang, Static Analysis of the Tower for Horizontal Wind Turbine Based on Finite Element Method, Wind Turbine Technology,2009(4),P.42-44 [2] Jin Xin, Du Jing, He Yulin, Application of Simulation in Analysis of Performance of Wind Turbine, Journal of System Simulation, 2007(12), P.2823-2830
[4] Xiangxin Liu: Basic and Application of ANSYS (In Chinese, Science Publishing, China, 2006)
Online since: October 2014
Authors: Jing Ru Bai, Hong Qin, Si Yu Xin, Qing Wang
Based on the causes leading to the error, the errors can be classified into two kinds: ① Heat Transferring Error: The model sets the central tube wall as heat insulating, and overlooks the heat transferring between the central tube and the stacking materials and the heat transferring coefficient of the side wall in the model is set at a constant value, without considering the variation of heat transferring coefficient resulting from the temperature difference between inside and outside the furnace at different locations. ② Stacking Error: The model deems the stacking zone as the well-proportioned porous medium, and sets the average resistance coefficient and voidage.
In the zone close to the wall, due to the influence of the walls, the voidage of stacked material increases, which gives birth to the error between analogue value and measured value.
Journal of Jilin University(Earth Science Edition), 2006, Vol.36(No.6):1019-1026
Online since: November 2013
Authors: Mutellip Ahmat, Zhi Wei Niu, Guzaiayi Abudoumijiti
The materials properties and the boundary conditions of the calculation within the region of the numerical model were settled.
The properties and boundary conditions of the fluid -film was shown in Table 1: Table.1The material properties and boundary conditions of the fluid-film Spindle Speed rpm 1500~4000 Density kg/m3 886 Pressure Inlet Mpa 4 Cp j/kg-k 1400 Pressure Outlet Mpa 0.1 Thermal conductivity W/m-K 0.12 Medium Temperature ℃ 40~115 Viscosity kg/m-s 0.02~0.12 The Results of Numerical Calculation Carrying Capacity between the Fluid-Film.
Acknowledgements This paper is supported by the Natural Science Foundation of XinJiang (2013211A005).
Journal of Tribology, Vol.559-565(2006) [8] Braun M.J., Piercon H.M.: Thermo-fluids Consideration and the Dynamic Behavior of a Finger Seal Assembly.
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