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Limsuwan3 1 Faculty of Science and Technology, Thepsatri Rajabhat University,Lopburi, Thailand. 2Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University,Nakhon Pathom, 73000, Thailand 3 Department of Physics, Faculty of Science, King Mongkut,s University of Technology Thonburi, Bangkok,Thailand.
So that, heat treatment of ruby in oxygen atmosphere, could to increment valuated of natural ruby Acknowledgments The authors wish to thanks the Center of Excellence in Glass Technology and Materials Science (CEGM) for the permission to use spectrophotometer.
Yaokulbodee, Journal of Modern Physics B. 14 (2001) 1693-1700.

A Numerical study of the Fire-extinguishing Performance of Ultrafine Water Mist in Small Scale Tunnel Space Tianshui Liang1,2,3, Jingjing Yu1, Guanpeng Lu1, Xiang Li1, Wei Zhong1,a and Siuming Lo3 1School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China 2State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China 3Department of Building and Construction, City University of Hong Kong, Kowloon, Hong Kong, SAR China azhongwei@zzu.edu.cn Keywords: Ultrafine Water Mist; Flow behavior; Fire extinction; CFD Abstract: CFD simulation study on the fire-extinguishing performance of ultra-fine water mist (UFM) and its flow behavior in a small scale tunnel.
SCIENCE CHINA Technological Sciences, Vol.55, No.7, pp:1982-1987 [2] Tian-shui Liang, Zhong-lin Liu et al.
Fire Safety Journal 42 (2007) 150–160 [4] Fumiaki T, Viswanath R K.
In: proceedings halon options technical working conference, Albuquerque: Albuquerque: 3M Specialty Materials, Boeing, Chemical Development Studies, Inc., 2004
In: Proceedings halon options technical working conference, Albuquerque: 3M Specialty Materials, Boeing, Chemical Development Studies, Inc., 2004.

The main factors for the economic unfeasibility of this production are raw material price, plant capacity and capital cost.
Yang: Materials Letters Vol. 128 (2014), p. 314-318
Yin: Materials Letters Vol. 102–103 (2013), p. 91–93
Schmauder: Engineering in Life Sciences Vol. 6 (2006), p. 546–551
Parajó: International Journal of Food Microbiology Vol. 97 (2004), p. 93–98.

It is should be noted that semi-solid processing will become a important forming method of simple, high efficient, low cost and good quality in the fields of materials processing. 1.
Therefore, it is necessary to widen research on semi-solid materials.
Semi-solid materials have been characterized by wide temperature interval between liquidus and solidus.
Furthermore, the forming temperatures of semi-solid materials have a limited influence on filling ability of slurry [31,32].
It has demonstrated that semi-solid materials are suitable for formation of both casting alloys and forging alloys.

Introduction Magnetorheological (MR) fluids belong to a group of intelligent materials.
These changes in the rheological properties of MR materials are fast (a few milliseconds) and reversible.
Munoz: A model of the behaviour of magnetorheological materials, Smart Mater.
Zhang: An adaptive beam model and dynamic characteristics of magnetorheological materials, Journal of Sound and Vibration 261, p. 465–481 (2003) [6] M.Yalcintas and H.
Lakes: Viscoelastic Materials (USA 2009) [16] S.

Tuning the operating voltage [1,2,3], changing the collector materials and surface morphologies [4]can improve the collection efficiency.
The significant factors in maximizing multistage depressed collector (MDC) efficiency are electrode materials or surfaces with low secondary electron emission characteristics.
Chinese Journal of Vacuum Science and Technology, 29 (6) (2009) 624-636
[12] G.C Yong and M.Y Wei, Strength of copolymer grouting material based on orthogonal experiment.Journal of Central South University of Technology 16 (1) (2009) 143-148
[18] N.Díaz，S.Castañeda，J.M.Ripalda，etal, Materials of Low Secondary Electron Emission to Prevent the Multipactor Effect in High-Power RF Devices in Space, J. 6th Spacecraft Charging Technology Conference, (2009) 205-209

Study on the Toughness Performance of Polypropylene Fiber and SBR Polymer Latex Modified Cement Mortar XU Fang1, a , ZHOU Mingkai1, b, SHEN Weiguo1, c, LI Beixing 1, d 1 Key Laboratory for Silicate Material Science and Engineering of Ministry of Education, Wuhan University of Technology, Wuhan 430070, China a xufang2001@163.com, b zhoumingkai@sina.com, cshenwg@sohu.com, d libx@126.com Key words: cement mortar; polypropylene fiber; SBR polymer latex; flexural toughness Abstract: In this paper, polypropylene fiber and SBR polymer latex are added into cement mortar to improve the toughness.
This research provides some useful references for the application of this new material. 1 Introduction Cement mortar is a typical brittle material, of which its compressive strength is far greater than the tensile strength, thus resulting in low toughness, poor impact resistance and weak deformation capacity of cement mortar [1].
The modification mechanism and the chemical composition are also analyzed by some microscopic test methods. 2 Experimental 2.1 Raw materials P.O 42.5 cement with its quality in accordance with national standards; The length of a single polypropylene XU Fang(徐方): Ph D Candidate; E-mail: xufang2001@163.com.
Tel: 13871225640 Funded by the science project from Department of Communication of Hubei Province.
Shrinkage cracking in polyolefin fiber-reinforced concrete, ACI Materials Journal, 2000, 97(4):432~437 [2] Standard of JC/T 984-2005, Polymer modified cement mortar for waterproof.

Parameters and Experiments on the Precision Forming Process of Spline Cold Rolling Zhiqi Liu1,2, a , Jianli song2,b, Huiping Qi2,c , Yongtang Li2,d , Xudong Li 1,e 1 State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Science & Technology, Lanzhou 730050 ,China; 2 School of Materials Science and Engineering, Taiyuan University of Science & Technology, Taiyuan 030024,China a lzq_678@yahoo.com.cn, bsongjianli06@sina.com, cqhp182257@yahoo.com.cn, d liyongtang@tyust.edu.cn, elixd@lut.cn Keywords: Spline, cold rolling, precision forming, process parameters Abstract.
Compared with conventional cutting methods of gear shaping and hobbing, this process has the unique features such as high production efficiency, high strength of the tooth surface, better wear resistance, little waste of raw materials, better continuity of the internal microstructures, and perfect comprehensive mechanical properties.
The rolling wheels recover the deforming resistance of the materials and squeeze into the billet of the workpiece while the external cycle of the workpiece has been plastically deformed.
It is correlated with the materials of the stock, the shape of the workpiece, the process parameters and so on.
Joseph and Feng Feng: Wire Journal International, Vol. 34 (2001), pp.110-115 [5] Xiuyi Wu: Machinery Manufacturing Engineer, Vol. 000（1997）：pp.15-16 [6] Quangang Zheng: Automobile Technology & Material.

Nanotechnology holds the promise to dramatically improve performance of materials and devices with cheaper, better production processes.
Manufacturing and Material.
Such nanostructuring is expected to bring about lighter, stronger, and programmable materials and reductions in life-cycle costs through lower failure rates.
With overall improvement of life style and advanced use of products and materials, it contributes to pollution prevention and energy conservation.
It is yet unknown how nanostructured materials and other related nanotechnologies might affect human health and interact with the environment.

Introduction MACHINABILITY is an important criterion in materials selection and design[1-4].
The appearances of chips of the worked materials were observed.
D Lou, K Cui and Y Jia, Journal of Materials Engineering and Performance.
S Hidekazu, I Kensuke and Y Yuki, Materials Transactions.
M Hashimura, A Mizuno and K Miyanishi, Materials Science and Technology Conference and Exhibition, MS and T'08 3 (2008), p.1812