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Jugjai, Effect of tube length on combustion characteristics of a self-aspirating radiant burner (STRB), TSME Journal of research and applications in mechanical engineering. 1 (1997) 19-23
Amtachaya, Comparison of solution of radiative heat transfer equation in porous materials solving by the equation of formal solution and the P1 approximation equation, SiamU Journal. 1 (2008) 20-30
Kamiuto, Improvement of the P1 Appoximation in rediative transfer, JP journal of Heat Mass Transfer. 1 (2007) 63-74
Poowadin, Heat transfer enhancement of flow insulator by combined stainless steel fibrous and wire net porous materials, IOP Conf.
Series: Materials Science and Engineering. 297 (2017) 1-9.

Biological pharmaceutical is the use of microbial fermentation, under appropriate conditions, converting the raw materials after a specific metabolic pathway to drug in the process of human need.
Chemical synthetic drug are organic material or inorganic material generated by chemical reaction processes for the production of chemicals or chemical raw materials.
Neurotoxic Effect of Exposure of Mice to Volatile Organic Compounds．Journal of Labour Medicine, Vol.22(2005)No.2, p.112.
Asian Journal of Ecotoxicology, Vol. 7(2012)No.1, p.87.
Chinese Journal of Antibiotics, Vol.36(2011)No.3, p187.

The density of polycarbonate materials has no effect on the reaction mechanism, which simulated by Zhang Y et al [10] by MD method.
Journal of Applied Polymer Science, 2016
International Journal of Adhesion and Adhesives, 2013, 44:243-249
Journal of Applied Polymer Science, 132(27)
Journal of Applied Polymer Science, 2012, 125(6)

Simulation graphics display of numerical control machining is marked by dynamic display of tool motion, worktable movement and removing of blank materials[4-5].
During every cutting, only some parts of tool cutting and the location of worktable and rough materials have changed in display graphics.
Acknowledgement It is a project supported by the Natural Science Foundation of Jiangsu Province (BK2008367).
[6] Kovacicm, Balic J and Brezoncnikm: Journal of Materials Processing Technology Vol. 155(2004), p. 1647-1652
[7] Jianguang Li, Hang Zhao and Yingxue Yao: Journal of System Simulation Vol. 13(2007), p. 2972-2975,in Chinese

Journal of Applied Science.
Turkish Journal Engineering Environment Science.
Nigerian Journal of Technology.
ACI Materials Journal. 1986, pp 650-657
ACI Materials Journal. 1994, pp 349-354

Materials and methods Dense materials were obtained in disc shapes by uniaxially pressing green powders (< 75 µm) at 180 MPa, followed by sintering at 1200 ºC.
Sintering temperature was 100 ºC higher for porous materials, in order to increase mechanical strength.
European Journal of Pharmaceutical Sciences. 17(4- 5) (2002) p. 229-238
Journal of Orthopaedic Research. 20(2) (2002) p. 274-280
[4] Queiroz AC, Teixeira S, Santos JD, Monteiro FJ, Key Enginnering Materials Vol. 254-256 (2004) p.997-1000

Cu2O is a basic compound forming superconducting materials.
According to the XRD results, the choice of substrate materials plays a crucial role in the formation of Cu2O.
Basaran : Materials Chemistry and Physic Vol 83 (2004) p. 140 [2] P.E. de Jongh, D.
Maruyama: Solar Energy Materials & Solar Cells 56 (1998), p. 85 [5] A.
Alexander: X-ray Diffraction Procedures for Polycrystalline and Amorphous Materials (Wiley, New York 1974)

P1 is purchasing cost of raw material.
H1 is holding cost of raw material.
International journal of production economics. 1998,56:69~77 [3] Lee,H.L., Whang,s.
Management Science. 1999.45(5). 633-640 [4] D.Heeremants, L.F.Gelders.
European Journal of Operational Research, 1995,81:239~248

The oilless lubrication of the compressor is obtained by using self-lubricating materials and grease lubrication bearings.
In order to meet increasing market demand, the WW-1.65/7 oilless compressor was developed by Hebei University of Science and Technology.
The oilless lubrication between cylinders and pistons are achieved by using non-metal self-lubricating materials to make piston rings and guiding rings.
Filled polytetrafluoroethylene material (filled PTFE) is selected to make them in the compressor because of its widest and ripest application at present.
References [1] Yufeng Zhu, Baocheng Peng and Zhiguang Zhao: China Pulp ＆ Paper Industry, (7) (2004), p. 50-51（in Chinese） [2] Yufeng Zhu: Journal of Hebei University of Science and Technology, Vol.29 (1) (2008), p. 53-56（in Chinese） [3] Yufeng Zhu: Hebei Journal of Industrial Science and Technology, Vol.24 (1) (2007), p. 1-3（in Chinese）

Popoola2 1Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, P.M.B.
Aluminium metal matrix composites (AMMCs) are new trending materials with superior properties than the primary aluminium alloy, the combined strengthening mechanism of the composite materials supersede that of the individual constituents both in physical and chemical makeups.
International Journal of Engineering Science Invention ISSN (Online): 2319 – 6734, www.ijesi.org, Volume 6 Issue 10, PP. 12-19
Journals of Alloys and Compounds, 735(2018) 2167-2174
Journal of Asian Ceramic Societies 3:352–359