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The optimum design for the new-typed auto-eliminate backlash mechanism in gear transmission Liu Qinqin1,a, Xiang Zhongfan1,b, Wang Jinge1,c, Wu Jiang2 1 School of Mechanical Engineering and Automation, Xihua University, Chengdu, 610039, China 2 Aircraft Repair & Overhaul Plant, Civil Aviation Flight University of China, Guanghan, Sichuan 618307, China a Qinqin0205@126.com,b XZF1965@126.com,ccgjwc@mail.xhu.edu.cn Keywords: New-typed auto-eliminate backlash mechanism; Gear transmission;Genetic algorithm; Optimize design; Matlab Abstract.
Acknowledgement The author would like to thank the support of the National Natural Science Foundation of Chinese (No.50775190);this project is supported by the Research Fund for Key Discipline of Mechatronic Engineering(SZD0409-08-0)and by the Research Fund for Key Lab of Manufacturing and Automation of Sichuan Province, Xihua University.

A Study on the Construction Techniques of an Open Cut Tunnel Annexed to an Existing Electric Railway While Assuring Safe Traffic Xinmin Xie China Civil Engineering Construction Corporation, Beijing, 100038, China xiexinmin@ccecc.com.cn Key words: Contact wire, Railway in operation, Open cut tunnel, Annex Abstract: In order to resist the landslides at the Chongqing-Huaihua Railway, A new 82m long open cut tunnel is constructed under normal operation of the railway, in spite of the HV contact wire overhead and tracks below the line.
The railway can be open again with the proper acceptance of the contact system by professional engineer and safety supervisor.

Study of the Photocatalytic Efficiencies and Characteristics of Cu Doped TiO2 Coating on Reticulated Stainless Steel Mesh Chih-Chi Yang1,a, Yi-Chu Huang2,b and Yung-Pin Tsai3,c Department of Civil Engineering, National Chi Nan University, Puli, Nantou, Taiwan ayangcc@mail.ncnu.edu.tw, bchorophy1@hotmail.com email, cyptsai@ncnu.edu.tw Keywords: Reticulated Stainless Steels, Cu Doping, Visible Light, Coating Mass, Photocatalysis Abstract.
Taya: Biochemical Engineering Journal, Vol. 14 (2003), p. 149 [18] A.

Civil studies on the noise simulation of indoor substation have also been conducted and obtained some achievements.
Spacecraft environment engineering,26(2):140-142
Jiangsu electrical engineering. 30(2):55-58 [11] Weng Xianbang,Wang Bangquan,Chen Ruishi(1990).Substation noise control and sound barrier model research [J].

Journal of Transportation Systems Engineering And Information Technology.
Journal of Beijing University of Civil Engineering and Architecture.

Research on the Scale of Construction Water Reuse WANG Xiao-yan1, a, FAN shao-yan2, b, CHENG Ying-ying1, c 1 School of Civil engineering, Chang’an University, Xi’an, China. 2College of Urban and Environment Science, Northwest University, Xi’an, China a249373419@qq.com, bwannxy@163.com, cbylwzl@163.com Key words: construction water reuse, strengths and weaknesses, recycled water, dimensions, water reuse technology Abstract.
the Single Building Type Features Treatment process Size requirements Application Hotels or Apartments Larger number in cities; grade different; contacting population uneven Raw water is bathing water; using the traditional bio-processing and treating technology Building area of 30,000 square meters or more; daily recycled water over 150m³; four-star or above Flushing, green, car washing Office buildings or Building types Fixing population, small amount of water because of the application Raw water is mop water or ground seepage water; using biological contact oxidation technology Building area of 50,000 square meters or more Flushing, hygiene College institutions Having a abiding and large number of resident population; large water consumption; water price is low; water conservation is weak awareness Raw water is washing water and bathing water; using biological contact oxidation technology The number of resident students is more than 5 million in college or campus; "985" engineering

EFFECT AND SOLID SOLUTION MECHANISM OF Co2O3 DURING C3S FORMATION Hongbo TAN1, a, Kai Ke2, b, Baoguo MA2, c and Jun Xiao2, d 1 School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, Hubei, the P.R.China 2 Key Labortory for Silicate Materials Science Engineering of Ministry of Education, Wuhan University of Technology, Wuhan 430070, Hubei, the P.R.China athbwhut@163.com, bjuliets-kk@163.com, cmbgjob@163.com, d158483588@qq.com Keywords: C3S; crystal form; phase diagram; solid solution Abstract: C3S is one of the most important mineral phases in silicate cement clinker; alternative ions could be solidified into C3S crystal lattice.

Load Stress Analysis on BFRC-RCC Composite Pavement Dongqing He 1,a, Yiming Wang 2,b and Chang Lu 2,c 1Institute of Material and Structure, Henan University, Kaifeng 475001, China 2School of Civil Engineering and Architecture, Henan University, Kaifeng 475001, China ahe_dongqing@163.com, b492842100@qq.com,cluchang575@163.com Keyword: BFRC-RCC composite pavement, Load stress, Finite element Abstract.
Table 3 Verify calculation with finite element model[MPa] finite element solution analytical solutio absoluteerror relative error(%) 1.45 1.52 0.07 4.6 Through the contract of the pavement load stress in table 3, the relative error between the standardize analytical solution and numerical solution is less than 5%, indicating that the results of the BFRC-RCC composite pavement finite element model which is based on the elastic half-space foundation plate theory can meet the accuracy requirements of engineering design.

Extraction of Poly-Phosphate from the Activated Sludge with Thermal Treatment for Phosphorus Recovery Ming yang Zhang1, a, Ai min Hao 2, b and Takahiro Kuba 1, c 1Graduate School of Engineering, Department of Urban and Environmental Engineering, Kyushu University, Fukuoka 819-0395, Japan 2Research Institute for East Asia Environments, Kyushu University, Fukuoka 819-0395, Japan a3TE09098K@s.kyushu-u.ac.jp, bhao.aimin.849@m.kyushu-u.ac.jp, ckuba@civil.kyushu-u.ac.jp Keywords: Poly-phosphate, Thermal treatment, Activated sludge, Phosphorus recovery Abstract.

Study on Stability of Lateral Vibration for Train-Bridge (Track) System ZHOU Zhihui, YANG Lu, LIN Like, ZENG Qingyuan School of Civil Engineering and Architecture, Central South University, Changsha 410075, Hunan, China zzhyy@mail.csu.edu.cn Key words: train derailment; lateral vibration; railway bridge; critical speed; stability Abstract: The mechanism of train derailment is demonstrated to be the loss of the lateral vibration stability of train-bridge (track) system.
Chinese Journal of Mechanical Engineering, Vol. 44-4 (2008), p. 184-188 [5] Zhang Weihua, Shen Zhiyun: Study on the stability of vehicle system with nonlinear movement.