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Among the materials for PENGs, ZnO shows exceptional piezoelectric properties because of its asymmetric polar crystal structures and easy fabrication on desired substrate.
Materials and Methods Materials Zinc acetate dihydrate (Zn(CH3COO)2.2H2O), zinc nitrate hexahydrate (Zn(NO3)2.6H2O), hexamethylenetetramine ((CH2)6N4), ethanol and acetone were all of analytical reagent grade and purchased from Sinopharm Chemical Reagent Co., Ltd (Shanghai, China).
Palneedi, Comprehensive biocompatibility of nontoxic and high-output flexible energy harvester using lead-free piezoceramic thin film, APL Materials 5 (2017) 074102
Ryu, Research Update: Nanogenerators for self-powered autonomous wireless sensors, APL Materials 5 (2017) 073803
Song, Piezoelectric nanogenerators based on zinc oxide nanowire arrays, Science. 5771 (2006) 242-246

The other studies aimed on materials preparation’s impact on the properties of acrylic bone cement show that the compressive strength of suspension polymethylmethacrylate(PMMA)’s small diameter microspheres can meet 90MPa.
Experiment Materials and Equipment.
Acrylic bone cement used in the research is provided by Tianjing Institute of Synthetic Materials Industry, China.
Acknowledgements Lanfeng Zhang acknowledges financially supported by the Natural Science Foundation (30810103908).
Influence of Nano-hydroxyapatite Powder on the Mechanical Properties of PMMA Bone Cement[J].Journal of Materials Science&Engineering, 2005, 23(6):863-866 [4] Weimin Fan, Xi Chen.

Kobzev, Nanocarbon materials: Physicochemical and exploitation properties, synthesis methods, and enegretic applications, High Temperature. 53 (2015) 130-150
Kumar, First-principle Investigation of Lithium Intercalation Behavior of a (3; 3), Materials Science Forum. 736 (2013) 27-31
Energy & Environmental Science. 4 (2011) 1379
Beskachko, Adsorption of Sulfur’s Atoms on the Outer Surface of Carbon Nanotubes, Advanced Materials Research. 1091 (2015) 25-29
Daniel, The SIESTA method for ab initio order- N materials, J.

The metallogenic materials are enriched surrounding the rock mass.
The characteristics of rare earth elements and trace elements are shown that the magma was mixed with the materials of the upper crust within its formation and evolution.
Journal of Xi’an College of Geology[J]. 19(3):34-42(1997).
Science China Earth Sciences[J].
Geological Science and Technology Information[J]. 29(1):29-37(2010).

Linear elastic stability analysis of the whole bridge is firstly conducted, and followed by calculating the ultimate bearing capacity of the bridge with the consideration of geometrical and material nonlinearity of structure.
As a non-conservative stability analysis method, linear elastic stability analysis method is unsafe as it's not incorporating the influence of the geometric nonlinearity, material nonlinearity and a variety of initial defects on the bearing capacity of bridge structure
Journal of Xiangtan Normal University. 2009,31(2) (in Chinese) [2] Shi Shudong.
Technology Analysis of Long-Span Steel Trussed Arch Bridges [J].Transportation Science&Technology,2005,6(3):49-51.

Dynamic Response Analysis of Large Wind Turbine Blade Based on Davenport Wind Speed Model Jianping Zhang1, a, Dongliang Li1, b, Yu Liu2, c, Helen Wu3, d, Jianxing Ren1, e, Weiguo Pan1, f 1 School of Thermal Power and Environmental Engineering, Shanghai University of Electric Power, Shanghai 200090, China 2 Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China 3 School of Engineering Perth, Edith Cowan University, Western Australia 6027, Australia ajpzhanglzu@163.com, bdongliangqh@163.com cyuliu@mail.sic.ac.cn, dh.wu@ecu.edu.au eren608@163.com, fpanweiguo@shiep.edu.cn Keywords: Fluctuating Wind Speed, Blade, Displacement, Von-mises Stress.
In the state of waving, the blade linear strain caused by deformation is the main factor which makes material fracture.
Acknowledgment This work is supported by Key Discipline of Shanghai Education Commission (J51304)，Scientific Research and Innovation Project of Shanghai Education Committee (11ZZ172，11ZZ171), National Natural Science Foundation of China (50706025) and Natural Science Foundation of Shanghai (09ZR1413000, 11ZR1414200).
References [1] Ming-Hung Hsu, “Dynamic behavior of wind turbine blades” , Mechanical Engineering Science, Vol. 222, 1453-1464, 2008 [2] Fu Cheng, Wang Yanrong, “Dynamic Response Analysis of Wind Turbine Blade”, Acta Energiae Solaris Sinica, Vol. 31, issue 7, 917-922, 2010 [3] Zhao Na, LI Junxiang, LI Chengliang, “Model Analysis and Stability Analysis of Wind Turbine Blades Based on Ansys Modeling”, Fiber Reinpressured Plastics/Composites, Vol. 6, 14-17, 2010 [4] Hu Danmei, LI Jia, Yan Haijin, “Numerical Simulation of Airfoil Dynamic Stall of Horizontal Axis Wind Turbine”, Proceedings of the CSEE, Vol. 30, issue 20, 106-111, 2010 [5] He Yulin, Li Haifeng, Jin Xin, “Aerodynamic Characteristics Model of Airfoils for Wind Turbine Blades”, Mechanical Science and Technology for Aerospace Engineering, Vol. 29, issue 12, 1589-1594, 2010 [6] Rui Yang, “Research of the rotational effects on the boundary layer of wind turbine blades”, Modern Physics Letters B, Vol. 23, issue 3, 505-508, 2009
[11] Cheng Zhaoxue, Yang Congxin, LI Rennian, “A Numerical Method in Aerodynamic Computation for Wind Turbine Rotor”, Mechanics in Engineering, Vol.29, issue 6, 44-47, 2007 [12] Zhou Pengzhan, Xiao Jia-yu, Zeng Jingcheng, “Structural Analysis of Large-scale Composite Wind Turbine Blade Based on ANSYS”, Journal of National University of Defense Technology, issue 2, 46-50, 2010

Study of Knowledge Reasoning in Supply Chain Yiqing Lua, Min Hu, Chen Li School of Information Management, Beijing Information Science and Technology University, Beijing, 100192, China aemail: luyiqing@126.com Keywords: Supply chain; Ontology; Knowledge reasoning; Knowledge sharing Abstract.
Introduction From the perspective of knowledge management, it not only refers to the supply chain of material, but also that of knowledge.
PHR201106133), and and the Projects in the National Science & Technology Pillar Program (No.2012BAH08B02).
Web Semantics: Science, Services and Agents on the World Wide Web, 2009,7: 74-89
Journal of Beijing information science and technology university. 2010, 25(Z2): 97-102.

The soil, loose material, and organic fertilizers should be broken, sieved, and mixed thoroughly.
Acknowledgements This research work was financially supported by Hainan Provincial Natural Science Foundation of China (312025), National Nonprofit Institute Research Grant of CATAS-TCGRI (1630032012007; PZS064).
Wang: Science & Technology Information (2010), p. 142
Gao: Science and Technology Innovation Herald (2011), p. 141-142
Wang: Journal of Anhui Agri Sci Vol. 38 (2010), p. 4999-5001

One of the promising semiconductor materials which has been researched intensively is zinc oxide (ZnO).
Science Officer) and Mr.
Kerr: Journal of Solid State Chemistry Vol. 180 (2007), p. 988
Yin: Materials Letters Vol. 63 (2009), p. 275-278
Guo: Materials Letters Vol. 62 (2008), p.3101.

Such materials demonstrate high rigidity, superb machinability, self-restored and have high chemical, oxidation and corrosion resistance.
Materials and Methods CrAlC films were deposited on tool steel and Si plates by arc sputtering technique using the UVNIPA-1-001 machine.
The mechanical characteristics (hardness and elastic modulus) of CrAlC were measured by nanoindentation technique (NanoTest 600, Micro Materials Ltd, UK) using Berkovich diamond pyramid (indenter).
In addition to monolayer films, multilayer coatings are technologically promising materials for tribological applications.
Hultman, The Mn+1AXn phases: Materials science and thin-film processing, Thin Solid Films 518 (2010) 1851–1878