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As the temperature rises, the PEEK loses some of its properties, for example, the modulus of elasticity, strength, but the range of operating temperatures for PEEK in the short-cycle process is wider than for other thermoplastic materials.
As for short-term thermal stability, PEEK is at the level of the most stable materials – polyethersulfones, the destruction of which is ~ 1%when heated to 420-430 °C.
Discussion of the Results Because of the high melting point, PEEK is processed by extrusion at temperatures of 370-380 °C, by casting at 380-400 °C, and the production of thefilled composite materials requires even higher processing temperatures.
Mikitaev, New Method of Investigation of Polysulfone Thermal Destruction, Polymer Science, Series B. 59 (2017) 216–224
Khashirova, Investigation of thermal and thermo-oxidative degradation of poly(ether ether ketone) by gas chromatography, Chinese Journal of Chromatography. 36 (2018) 395-399.

Luo 1 1 Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, China.
E-mail: smzhang@mail.hust.edu.cn 2 Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China Keywords: Nanosphere, Curcumin, Degradable, Encapsulation Abstract.
Materials and methods 2.1 Materials Poly-D,L-lactide acid (PDLLA) (Mv=190,000) was synthesized in our laboratory.
Luo, et al: Key Engineering Materials.
Liu, et al: ASAIO Journal.

A Bioreactor for a Pulsatile Circulatory Culture System Huirong Xu1,2, Shaochun Sui1,2, Xiaohong Wang1,2* Yongnian Yan1,2, Renji Zhang1,2 1 Key Laboratory for Advanced Materials Processing Technology, Ministry of Education & Center of Organ Manufacturing, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P.R.
China 2 Institute of Life Science & Medicine, Tsinghua University, Beijing 100084, P.R.
Introduction Seed cells, structure materials and cell growth factors are three key factors of tissue engineering.
Figure1 Structure of pulse bioreactor Mechanical part Showing in Figure 2, the peristaltic pump of the pulse bioreactor was made of simple health materials that can adjust the flux.
Weiss, et al.: Journal of Surgical Research Vol. 88 (2000), p. 34 [9] B.S.

The study on the degreasing technology of silk floss treated with leaching Method Haitao Lin1,a ,Yanlong Xu2,b, Long Li 2,c, Fang Jiang 1,d and Wane Ning1,e 1College of Biological and Chemical engineering, Guangxi University of Science and Technology, Liuzhou, Guangxi, 545006, China 2College of Textiles and Materials, Xi’an Polytechnic University, Xi’an, Shanxi, 710048, China a lhthost@163.com ,b 397789477@qq.com, c lilong2188@126.com ,d jff126@126.com, e ningwane@163.com *Corresponding author: Jiang Fang, jff126@126.com Keywords: silk floss; leaching Method; degreasing technology Abstract.
Experimental 2.1 Materials. 6# light gasoline was purchased from Liaoning Yixin Chemical Co., Ltd.
These materials were used as received.
Acknowledgements This work work was supported by Science Research and Technology Development Program of Guangxi (Award Number:11107018-6) and Application Technology Research and Development Program of Liuzhou (Award Number: 2011E010101).
Journal of Textile Research. 28(2007)22–25

The former, such as Chinese Ⅱ type flame retardant polyether, 601 type polyether, makes materials flame retardant by a chemical reaction.
Adding phosphorus and halogen to the isocyanate can also make materials flame retardant.
The latter is to add flame retardant to the materials.
The materials above were thoroughly mixed with an electric mixer at high speed.
Hebei Journal of Industrial Science and Technology, Vol. 23(2006), p. 253 (In Chinese)

Li, Power flow calculation in distribution system considering different load model, Advanced Materials Research. 722 (2013) 103 - 106. [33] N.
Zhou, Power Flow Calculation Based on Power Losses Sensitivity for Distribution System with Distributed Generation, Applied Mechanics and Materials. 391 (2013) 295-300. [34] L.
Chen, Study on a Uniform Algorithm for Single-Phase and Three-Phase Load Flow Calculation, Advanced Materials Research. 614 and 615 (2013) 957-965. [35] Alejandro Garces, A Linear Three-Phase Load Flow for Power Distribution Systems, IEEE Transactions on Power Systems. 31 (2016) 827 - 828
[44] Payasi RP., Singh AK., Singh D., Planning of different types of distributed generation with seasonal mixed load models, International Journal of Engineering, Science and Technology. 4 (2012) 112–124. [45] Abu-Mouti FS., El-Hawary ME., Optimal distributed generation allocation and sizing in distribution systems via artificial bee colony algorithm, IEEE Transactions on Power Delivery. 26 (2011) 2090–2101
[48] Srinivasa Rao R., Capacitor placement in radial distribution system for loss reduction using artificial bee colony algorithm, World Academy of Science, Engineering and Technology; International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering. 4 (2010) 1108–1112. [49] Ghosh S., Sherpa KS., An efficient method for load−flow solution of radial distribution networks, World Academy of Science, Engineering and Technology, International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering. 2 (2008) 2094–2101. [50] Acharya N., Mahat P., Mithulananthan N., An analytical approach for DG allocation in primary distribution network, Electrical Power and Energy Systems. 28 (2006) 669–678.

Study on Properties of EPS Insulation Mortar Wei Zhou1 , Wenhong Tao1,a, Xinghua Fu1 ,Chuang Liu1 School of Material Science and Engineering, University of Jinan,Jinan, P.R.China,25022 amse_taowh@ujn.edu.cn Keywords: EPS insulation mortar; dry density; compressive strength; water absorption; softening coefficient Abstract.
To reduce the density of cementitious material, which is by increasing the aggregate-cement ratio and adding materials that are lower in density than that of cement.
Raw materials.
Considering that insulation mortar is mainly used as heat preservation materials, it’s thermal conductivity is the major advantage, compressive strength follows, and thermal conductivity is closely related to density.
Polymer cement-based materials and applications.

Skerfving, "Repetitive industrial work and neck and upper limb disorders in females," American journal of industrial medicine, vol. 27, pp. 731-747, 1995
Itani, "Shoulder muscle tenderness and physical features of female industrial workers," Journal of human ergology, vol. 5, p. 87, 1976
Chaffin, "Shoulder disorders and postural stress in automobile assembly work," Scandinavian journal of work, environment & health, pp. 283-291, 2000
Veiersted, "Sustained muscle tension as a risk factor for trapezius myalgia," International Journal of Industrial Ergonomics, vol. 14, pp. 333-339, 1994
A prospective study on occupational and individual risk factors," Journal of clinical epidemiology, vol. 47, pp. 1411-1422, 1994

This material can be prepared as thin membrane [6] which is considered suitable for periodontal application.
Materials and Methods Preparation of Carbonate Apatite Membranes.
Surface topography influences interaction between material and environment, such as with cells and proteins [9].
Angle between liquid-solid intersection line and liquid-air was noted as q angle and measured to determine materials surface wettability.
Mirkovic, Antibiotics in the management of periodontal disease, Scientific Journal of the Faculty of Medicine in Nis 27(2) (2010) 85-92

In design, the good steady stiffness and dynamic characteristics, the little distortion, properly preferred material and good process ability of product structure were emphases to consider.
Under the condition of guaranteed enough stiffness and intensity, the design of structure should be reduced it's weight in order to save material , increase bearing capacity and decrease manufacturing cost based on it's volume is very big.
The types of element, the real constant and the attribute of material were including in the setting parameter of finite element model.
Acknowledgment This research is supported by university natural sciences research project of Jiangsu Province (Grant No. 08KJD460002) References [1] H.B.
Zhou: Journal of Architecture and Civil Engineering Vol.1 (2008), p.34 [3] Y.F.