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With the gradual improving of permanent magnet material performance-price ratio and control system performance, permanent magnet linear synchronous motor will be more widely used in NC machine direct drive system.
In order to simplify the analysis, this paper makes some assumptions as follows: 1) Only thinking the fundamental magnetic field; 2) The yoke of the stator and mover is isotropic, and their permeability is infinite; 3) The ferromagnetic materials are unsaturated, the magnetic is linear, and the principle of superposition is satisfied; 4) The changes of the Z-axis magnetic field are ignored; 5) The conductivity of ferromagnetic materials is zero, the eddy current is ingored.
The different kinds of ferromagnetic materials are respectively located in the yoke of the primary and the secondary.
The curve of electromagnetic thrust and magnetic levitation force Acknowledgment This project is financially supported by National Natural Science Foundation of China (50975181).
Journal of Shenyang University of Technology, 2009, 31(6): 601-605

Setting material properties:The material of bit body is carbon steel, material density is 7.8 × 106 g/mm3, elastic modulus E is 2.1 × 1011 N/m2, Poisson ratio μ is 0.28, the yield strength is 2.21 × 108 N/m2 .The materia of tooth carbide is hard alloy, the yield strength is 6.2 × 108 N/m2.
Based on the model geometry and default material properties, the program can estimate the solution time.
The node 23027 of step 2 ‘s maximum stress is 2.51 × 108 N/m2 in 1039μs,beyond the yield stress of 2.21 × 108 N/m2.It will not influence the material when the stress beyonds the material yield stress instantly , but when the drill falling on the ground periodically, where the fracture will be occured firstly.So the step 2 is more easily to be fractured than the other steps.
Computer and Information Science.2009,2(3):75~86
International Journal of Recent Trends in Engineering.2009,1(5):66~70

Influence of nanoscaled SiO2 particles on the pervaporation performance of PDMS membranes Rui Mana, Xinhua Dengb School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China amanruilove@163.com, bdengxinhua@tjpu.edu.cn Keywords: polydimethylsiloxane (103-PDMS); propylene glycol methyl ether (PGME); nanoscaled silica particles; pervaporation performances.
Due to its special polymer structure having both inorganic and organic structures, PDMS membrane is a novel kind of membrane materials, which could be used as organic permselective membranes[1,7].
Especially, from Fig. 9, when the weight ratios of major material (103-silastic:PMTSi:SiO2) is 100:4:0.20, the agglomerated particles appeared on the surface heavily, and the size of agglomerated particles was larger many times than the single nanoscaled SiO2 particle.
When the weight ratios of major material (103-silastic:PMTSi:SiO2) is 100:4:0.08, the α of 103-PDMS membranes can reach to 17.64, and its J was 31.82 g•m-2•h-1.
Journal of Jilin institute of chemical technology.

Fig. 1 General view of the sample for high research and its scheme of weld metal scraps The material for the study of selected high speed steel Т1 (ASTM USA)-quenched martensite on, and corrosion-resistant chromium steel 430 (ASTM USA), relating to ferritic grades.
The Structure and Properties of Hard Metals Irradiated by High-Energy Electron Beam // Advanced Materials Research. - 2014 - Vol. 872. - p. 214-218
Forecasting of Hard-Alloyed Cutting Tool Resistance Based on Thermal Diffusivity // Materials Science Forum. - 2013 - Vol. 762. - p. 777-781
[5] Kuznetsov, M.A., Zhuravkov, S.P., Zernin, E.A., Kolmogorov, D.E., Yavorovskiy, N.A Influence of nanostructured powder modifiers on the structure of a welding bead // Advanced Materials Research.
Valuev // MINING INFORMATIONAL AND ANALYTICAL BULLETIN (SCIENTIFIC AND TECHNICAL JOURNAL). – 2012. - № 12. – С. 96. – 104

Preparation of PNIPAAm Grafted Cotton via O2 Plasma and its Thermal Sensitivity Yongqiang LI1, 2, a, Tingting LIU1, b and Jinqiang LIU1, 2, c 1Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education,Zhejiang Sci-Tech University,Hangzhou 310018, China 2Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China ayqqli@163.com, bliutinghome@163.com, cjqliu@zstu.edu.cn (corresponding author) Keywords: Cotton fabric; Poly (N-isopropylacrylamide); Plasma; Grafting; Temperature-sensitivity Abstract.
Low temperature plasma modified fiber materials with multiply effects, such as surface etching, cross linking and initiating grafting.
Experimental Materials and chemicals.
Reference to Chinese national patent “A method and device for testing the temperature-sensitivity of thermal-smart textiles” [9] which covers the measurement of the water permeability at different temperatures—the rate of water flowing perpendicular through a known area under a constant pressure between two surface of a material, we can detect the thermal-sensitivity by the variation of water permeation time.
B, You-Lo Hsieh, Journal of Applied Polymer Science. 89 (2003) 999-1006

A new material—physically based calculation method is used to evaluate the load capacity of bevel and hypoid gears [4].
A finite element numerical modeling of materials response in gears tooth root and life prediction considering crack initiation period is developed [13].
Can, Three point load application in single tooth bending fatigue test for evaluation of gear blank manufacturing methods, International Journal of Fatigue 26 (2004) 785–789
Rosa, Bending Fatigue Tests of Helicopter Case Carburized Gears: Influence of Material, Design and Manufacturing Parameters, Gear Technology (Nov/Dec 2009) 68-76
Bereza, Method for the evaluation of wear and durability of involute conical straight-bevel gears, Materials Science, Vol. 45, No. 4, 2009, 595-604

The purpose of 2D layout design is to decrease unused space, gain the best area (space) or optimize material usage, such as luggage packing, bin packing, stock-cutting.
Journal of Computer –Aided Design & Computer Graphics ，2002，14(8)706一712.
Science of Computer Programming, 2003,48(1):68-80
European Journal of Operational Research,2006,172(3):814-837

(4) The system management module System management module mainly achieves the background management functions of health service platform, such as user management, system configuration, database backup, etc. 5 Conclusion As people increase material life, thirst for health becomes more and more strong, the health will become the new century people's basic goal, the pursuit of health has become everyone's style.
Journal of disasters and prevention and control engineering, 2009, 1 (66) : 60-61
Journal of sports science, 2007, 27 (8) : 6-7.

Raise the level of scientific fertilization: to vigorously promote soil testing fertilization, formular fertilization, precise fertilization technology, to formulate crop fertilization technology discipline according to different soil and different crops, different growth period and product quality requirements, to improve fertilizer use method, to promote integrated soil fertilizer technology, to control farmland fertilizer loss and improve the utilization rate of fertilizer. 2.3.3 Strengthen agricultural mulching film pollution prevention and control Adjust the use proportion of agricultural mulching film, improve the proportion of degradable film and longevity film, actively develop and introduce other biodegradable mulching material for agricultural production, reduce the area using the conventional agricultural film year by year.
Environmental Management College of China, E-mail:109483131@qq.com References [1]Lin-zhang Yang,et al.Dj.Review of the advances and development trend in agricultural non-point source pollution control in china [J],Chinese Journal of Eco-Agriculture,2013.21(1):96-101 [2] Lin-zhang Yang,etal,Reduce-Retain-Reuse-Restore Technology for the Controlling the Agricultural Non-point Source Pollution in Countryside in china:General Countermeasures and Technologies[J].Journal of Agri-Environment Science,2013.32(1):1-8

Arcachon, France, February 3-5, 2003 [5] Liangxian Gu, Chunlin Gong and Bo Hao: Journal of Northwestern Polytechnical University.
Patent 5,456,425. (1995) [8] Heng Chang, Yibai Wang and Yu Liu: Journal of Solid Rocket Technology.
Faget: Composite Material Hot Gas Valve System for Interceptor Guidance and Control.
Lafond: Numerical Simulation of the Flowfield Inside a Hot Gas Valve. 37th Aerospace Sciences Meeting & Exhibit.