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Blade material is GFRP (glass fiber reinforced plastics).
Acknowledgment *Project supported: This work was supported by National Natural Science Foundation of China (No: 50765007) , Young Teacher Research Initiated Fund Projects of Xinjiang University (No: QN070126) and Xinjiang Uygur Autonomous Regional Office of Education fund projects (2010).
[6] Wu Guangkuan: Journal of Xi'an University of Technology. vol.2 (2002), p.217-220

Study on the features of production decline law in oil manufacturing system in WangYao Block Qinghui Yan1,a Hanmin Xiao2,b Linghui Sun3 Weidong Liu3 Juncheng Hu4 1Institute of Porous Flow and Fluid Mechanics, Chinese Academy of Science, Langfang 065007,China 2Faculty of Petroleum Engineering, China University of Petroleum ,Beijing 102249，China 3Research Institute of Petroleum Exploration and Development-Langfang, Langfang 065007,China 4 CNPC Greatwall Drilling Company Engineering Institute, Panjin 124010,China aqinghuiyan1987@126.com bxiaohm69@petrochina.com.cn Keywords: low permeability, mid-high water cut stage, relative permeability curve, production decline, declining feature Abstract：Features of production decling determines the deployment of development project in oilfield, which has heavy influence on the oil manufacturing system.
Production decline equations have been deducted, which could be used to predict the declining trend in middle and high water-bearing period in WangYao Block, on the basis of material balance theory [8] and relative permeability curve.
[R].SPE 137317(2011) [7] Li Yanxing,Han Lingchun,Dong Pingchuan,et al.Study on econimic limits for horizontal well in low-permeability reservoir[J].Acta Petrolei Sinica,2009,30(2):242-246(In Chinese) [8] Ge Jiali,Ning Zhengfu,Liu Yuetian,et al.The principal of percolation mechanics in modern reservoirs[M].Beijing: Petoleum Industry Press,2001:127-135(In Chinese) [9] Yang Shenlai,Wei Junzhi.The physics of oil formation[M].Beijing: Petoleum Industry Press, 2004：268-270(In Chinese) [10] Qi Yin,Zhang Ningsheng,Ren Xiaojuan,et al.Experimental study on the flowing characteristics of single phase oil in super-low permeability reservoirs[J].Journal of oil and gas tecnology,2005, 27(2):366-368(In Chinese) [11] Li Daopin.Decision theory of low-permeability oilfield development[M].Beijing:Petoleum Industry Press,2003:56-97(In Chinese) [12] Chen Xinbin,Chang Yuwen,Wang Yanling,et al.Percolation mechanism and application of a production-decline model in low-permeability reservoirs[J].

Prediction and inspection of flow behaviour could be made possible in order to locate the cavitation susceptibility as an early precaution to structural material damage of rudder.
Journal of Engineering Science and Technology, 2, 126-138

Acknowledgements This work was supported by “Shandong Provincial Natural Science Foundation of China” (ZR2011EMM015), “Doctoral Program of Higher Education of the Ministry of Education of the Special Research Fund” (20110133110003) and “China University of Petroleum (East China) graduate innovative funding projects” (CX-1236).
Huang, Effects of anode voltage on medical titanium material by microarc oxidation, Special Casting and Nonferrous Alloys. 27 (2007) 97-100.
Yao, The corrosion resistance of titanium after micro arc oxidation treatment, Journal of Practical Stomatology. 27 (2011)194-198.

Through reasonable selection for the material permeability of working cylinder, piston and magnetizer it can be sure that most magnetic flux lines can pass vertically through the damping gap and large magnetic field strength can be obtained in the damping gap.
[4] Sevki Cesmeci, Tahsin Engin, Modeling and testing of a field-controllable magnetorheological fluid damper, International Journal of Mechanical Sciences. 52(2010), p.1040

Composition of Agricultural Supply Chain and Risks in Agricultural Supply Chain With the development of economy and science, food is required to be not only adequate, but also safe, fresh, nutritious and environmental friendly.
The composition of agricultural supply chain could be divided into four links [1]: production material supply chain, vegetable production links, acquisition and processing link and transport logistics and sales link.
International Journal of Production Economics Vol. 103, (2006), p. 451

It can be concluded that the large amount of statistic material can be obtained during a short time span.
Sinyakov, Development of an object-oriented system model simulation of queuing processes, Tomsk State University Journal of Control and Computer Science. 1 (2010) 89–93

Results of the Simulation Input data: z1=26, z2=32, m=5 mm, gears width=30 mm, input torque=256 Nm, input rotational speed=1500 rpm, gear material C45 (230 HB).
Kapelevich, Geometry and Design of Involute Spur Gears with Asymmetric Teeth, Elsevier Science Ltd., 2000
Houser, Dynamic Analysis of High Speed Gears by Using Loaded Static Transmission Error, Journal of Sound and Vibration. 125 ,1 (1988) 71-83

The combustion chamber is designed for combustion of loose wood, mostly wood chips and other similar biomass material.
Spilacek, Experimental Device for Multi-stage Combustion of Very Wet Biomass, ANNALS of Faculty Engineering Hunedoara – International Journal of Engineering, 2014, available on-line: [http://annals.fih.upt.ro/pdf-full/2014/ANNALS-2014-1-09.pdf] [4] M.
[6] Biomass combustion science, technology and engineering.

Theoretically, material which gives birth to hydrocarbon product could be used as reburning fuel and efficiency of 50-70% could be achieved.
Acknowledgement This work is supported by the young scholar distinction for Ph.D candidate of the ministry of education, the Shandong Province Natural Science Foundation (ZR2009FQ016, ZR2009FM001) and the Graduate Independent Innovation Foundation of Shandong University, (GIIFSDU, yzc09067), China.
Journal of fuel chemistry and technology, 2008, 36(5):583-587