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Introduction Biodegradable polymer materials are also known as the 'Green Polymer Materials', it has been a great focus on their research and development in the world[1,2].
Biodegradable polyurethane foam materials have broad application prospects in medical, packaging and many other fields[3].
Lopina: Journal of Applied Polymer Science.
Vol. 108(2008), p. 2345 [4] Yanyan Wang, Shuen Liang, Chunrong Tian and Jianhua Wang: New Chemical Materials.
Vol. 31(2012), p. 1280 [6] Yiming Wu, Dongping Huang and Xiaoyong Shen:Journal of Chemical Industry & Engineering.

Introduction Selective laser sintering (SLS) process, a widely used rapid prototyping (RP) method forms parts directly from CAD data by fusing powdered materials using a laser source.
SLS uses a wide range of materials in powder form.
Materials and processing Laser sintering of the specimens were carried out using DTM SLS 2500 plus machine.
“An experimental design approach to selective laser sintering of low carbon steel”, Journal of Materials Processing Technology, Vol. 136, pp.151-157
“Functional Testing of Direct Metal Laser Sintered (DMLS) Components for Automotive Application”, Advanced Materials Research, Vols. 383-390, pp. 6242-6246

Propose a method that using a semiconductor laser for a Imaginary benchmark straight line, Adjusting the position of the reference material with the optical system and position-sensitive detectors (PSD) to provide a benchmark for the space coordinate calibration of the gauging stations.
The localization of the standard material surface is completed, start the precise rotary table, rotate the pentagram 45 degrees, the normal incidence of the beam through the standard object surface, the laser beam is used as the basis of the position of the high-speed camera.
A glass material of good transmittance for the use for standard object surface is selected to improve the accuracy of the calibration method, the grid pattern of the standard object surface engraved by a photolithographic technique ensure the inscribe error within micron level.
Journal of Nanjing University of Science and Technology, 2007, 21(5): 537~540
Journal of Ballistics, 2007, 19(2): 5~8

So, this is inconvenient to encourage science researchers to invest.
On the other hand, lots of developed countries prescribe that the product which used in science research or the reading materials, college teaching materials, science journals which used to develop science technology are all free of tax.
On the other hand, the field technologists who serve in crawl material production industries can enjoy preferential income tax in accordance with their continuous length of service.
We suggest that the science developing industries, science research structures and colleges’ science developing which provided by the loans of banks are free of interest tax, stamp tax, sales tax and income tax.
CHEN, Research on the Independent Innovation of Strategic and Emerging Industries, Journal Of China University Of Geosciences(Social Sciences Edition), 11(2011)(3)

Titanium and its alloys are the structural materials widely used in manufacturing of some of medical equipment.
Materials and research techniques Commercially pure titanium VT1 - 0 and titanium alloy VT6 in as delivery condition were taken as a base material.
Such materials can be recommended for the construction of frictional couples.
Application of titanium and titanium-based materials in medicine // Ti – 2006 in CIS, 2006. p. 324-327
Antifriction properties of polytetrafluoroethylene-based composite materials. – М.: Nauka (Science), 1981. – 148p

The casting was performed in an induction furnace with controlled atmosphere developed in the laboratory of the Institute of Complex Materials (IKM) of the Institute of Materials (IFW), belonging to the Leibniz network of research institutes who works with Technical University of Dresden.
References [1] Craig R., Powers J.M.Restorative dental materials, 11-th editon.
Journal of Biomedical Materials Research, 41:614-23,1998; [4].
Journal of Dental Research, 49:27-33, 1990; [6].
Anusavice, Dental casting and soldering alloys, Phillips Science of Dental materials. 11th ed.

It is a philosophy and system concept of doing, maintaining and producing what is value adding or what is just needed, be it raw materials, components, parts, WIP, employees, or finished products [1, 8, 38].
[17] Harsej,F ., Yusof, S.M., Continuous Improvement through an Integrated Maintenance Model, Contemporary Engineering Sciences, Vol.4, 2011, no.8, 353-362
International Journal of Operations & Production Management.
,Thomas A., (2008), Integrated production machines and systems – beyond lean manufacturing, Journal of Manufacturing Technology Management .
Carretero, (2010), The integration of Six Sigma and lean management, International Journal of Lean Six Sigma, Vol. 1 No: 3 pp. 249 – 274

Iordachescu: Materials and Design, 30 (2009) 2701-2707
Wei, S.Yyin, Y.Ke. : Materials Science and Engineering A, 502 (2009):38-44
[7] Bakkaloǧlu. : Materials Letters, 56 (2002):263-272
[8] Hwang, C.G.Lee: Materials Science and Engineering A 527 (2010), 4341-4346
[9] S.Y.Shin, S.Y.Han, B.Hwang, C.G.Lee, S.Lee: Materials Science and Engineering A 517(2009), 212-218.

To ensure that the example be realistic and that a rigid body approach may be followed in the analysis of the motion, the links are constructed of homogeneous material with a uniform density of mass.
BENMAHAMMED: Journal of Intelligent and Robotic Systems, vol. 30 (2001), p. 73
[3] Key Gew Chae, and Jong Hyeon Park: Journal of Mechanical Science and Technology, vol. 23 (2009), p. 114
[4] Luis Gracia, Javier Andres, and Josep Tornero: International Journal of Control, Automation, and Systems, vol. 7, no. 1 (2009), p. 85
STAVRAKAKIS: Journal of Intelligent and Robotic Systems, vol. 33 (2002), p. 187

Compressive resistance reliability analysis of gravity dam based on elastic stochastic finite element Zhiqiang Wang1 2, a*, Kehong Zheng2, b, Xiaobin Wu1, c 1Jiangxi Provincial Institute of Water Sciences, Nanchang 330029, China 2College of Hydrodynamic and Ecology Engineering, Nanchang Institute of Technology, Nanchang 330099, China awzqhhu@126.com, bzkh0315@163.com, cdwndwndwn@sina.com Keywords: gravity dam; compressive resistance; reliability; stochastic finite element Abstract: When calculating compressive resistance reliability of gravity dam using the elasticity stochastic finite element method, as a result of stress singularity of dam toe, elements near the dam toe has been encrypted to different mesh size, find a point along the foundation plane that its compressive resistance reliability index is not sensitive to mesh and it is nearest to the dam toe, select the compressive resistance reliability index of the point as the compressive resistance reliability index of gravity
In order to reflect the characteristics of RCC dam, according to the characteristics of weak dimension, simulate the material properties of the concrete dam body and the level weak plane separately, uses the generalized contact face element simulate levels.
References [1] Chunyan Jiang, Xiaolin Chang, Wei Zhou: Journal of Hydroelectric Engineering Vol.25 (2006), p.16 (In Chinese) [2] Junxiao Pan, Ze Zhou, Yangyuan Chen: Journal of Hydroelectric Engineering Vol.26 (2007), p. 64 (In Chinese) [3] Shiwei Wu, Tongchun Li: Shuili Xuebao Vol.21 (1990), p.20 (In Chinese) [4] Guofan Zhao, Hengdong Wang: China Civil Engineering Journal Vol.29 (1996), p.47 (In Chinese) [5] Tongchun Li, Miao Li, Zhaowang Wen: Journal of Hohai University, Vol.31 (2003), p.42 (In Chinese)