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Rapid determination of sulfide in tannery wastewater by flow injection spectrophotometry Yuan Donga, Fu Dayoub College of Material and Chemical Engineering Department, Sichuan University of Sciences and Engineering , Zigong 643000, China aemail:yuandong68@126.com, bemail:fdy888@263.com, Key words: sulfide; flow injection spectrophotometry; tannery wastewater Abstract: A simple and rapid spectrophotometric method for flow injection determination of sulfite in tan wastewater is described.
Acknowledgements This work was financially supported by Characteristic discipline orientation project of Sichuan University of Sciences & Engineering (No.2014); Science and technology department of Sichuan province (No. 2013JY081); Education department of Sichuan Province (No. 12ZA096); Innovation Projects of Sichuan University of Sciences & Engineering (No.2012PY02).
Microchemical Journal, 71(2002) 1-8 [3] D Yuan, D.Y.
Applied Mechanics and Materials 295-298 (2013) 950-953 [4]An Min Xiang, Li Zhou, Cheng Guo Hu, Sheng Shui Hu.

XRD and CO2 Adsorption Studies of Modified Silica Gel with Octadecylamine Maratun Najiha ABU TAHARI1,a, Azizul HAKIM1,b, Tengku Sharifah MARLIZA2,c, Nurul Hanisah MOHD1,d, Mohd Ambar YARMO1,e 1School of Chemical Science and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia. 2Catalysis Science and Technology Research Centre, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
Materials and Method ODA/SG was prepared through wet impregnation method reported by Knowles et al. [2] with a few modifications.
Table 2 Percentage of crystallinity of ODA, SG600, 5ODA/SG600 and 35ODA/SG600 Material Percentage of crystal [%] Percentage of amorphous [%] ODA 87.0 13.0 SG600 17.2 82.8 5ODA/SG600 37.1 62.9 35ODA/SG600 50.5 49.5 Summary In summary, SG was successfully modified with ODA by wet impregnation method.
Burk, Synthesis and characterization of multi-walled carbon nanotubes modified with octadecylamine and polyethylene glycol, Arabian Journal of Chemistry, (in press) 2012.

Effect of Linear Cutting on corrosion Behaviors in 304 Stainless Steel Jiantao Dong 1,2,a, Zhen Luo 1,2,b, Dahai Xia 1,2,c, Rui Wang 1,2,d 1School of Materials Science and Engineering, Tianjin University, Tianjin, China 2Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin, 30072, China aTao861122@163.com, blz@tju.edu.cn, c dahaixia@yeah.net, d wangrui19840816@163.com  Keywords: Linear Cutting; Stainless Steel; Corrosion Behavior; Polarization Curve; EIS Abstract.
Experimental Procedures 304 stainless steel was used as the substrate material in this study.
Acknowledgements This research was supported by National Nature Science Funds of China (grant 50975197), State High-tech Research and Development Plans (the 863 plans) (grant 2008AA04Z136), Project Funds for New Century Talents of Ministry of Education, Double-Five Science and Technology Projects of Tianjin municipality colleges (grant 2009E6-0020), Integration Project of Production, Teaching and Research of Ministry of Educational of Guangdong Province(grant 2007A0903021050), and Applied Basic Research Funds of Tianjin municipality (grant 09JCZDJC24000) References [1] K H.
Journal of Chinese Society for Corrosion and Protection Vol. 27 (2007), P. 84-92 (In Chinese) [3] Ameer M A, Fekry A M.
Corrosion Science (2007)，P. 1-39 [5] J.A.

Echigoya: Journal of the European Ceramic Society, Vol. 25( 2005) p. 1381 [3] Z.
Bai: Key Engineering Materials, Vol. 280-283(2005),p. 1053 [4] H.
Wang: Key Engineering Materials, Vol.336-338(2007),p. 2432 [6] X.
Zhao: Rare Metal Materials and Engineering(in Chines), Vol.34(2005), p. 597 [7] J.
Dai: Key Engineering Materials, Vol. 368-375 (2008), p.1648

It contains the clothes made up of environmental fabric, as well as those which can reflect low carbon characteristics in production and consumption. 1.1 Current situation of low carbon clothing According to industry estimates, the clothing enterprises will no longer regard sales and price as competitive advantage in the future, instead, the materials and technology with less damage to the environment, and products with less carbon emission will win the favour of consumers, thus gain more market shares.
The model of resource-cycling A feasible idea is the connotation of innovative green design, specific methods are as follows: Select green clothing materials and design methods that attempt to enhance the beauty and functionality.
Along with the continuous advancement of textile science, a large number of new recycle fibers extracted from natural sources have showed up: Bamboo, Lyocel, Modal, Soybean and milk fiber, etc.
Secondly, implementing green combination in the design planning: main commodities choose low carbon materials, decorated by accessories with wild characteristics, so as to achieve the goal of recycling; free collocation of single product and series design can provide consumers more choices and improve the utilization and life-cycle of clothes; development of multi-purpose and easy-care products can also effectively prolong the life of clothes.
[2] Gereffi, G. 1999, 'International Trade and Industrial Upgrading in the Apparel Commodity Chain', Journal of International Economics, vol. 48, no.

Whereas the friction coefficient characteristics of paper-based friction material is larger (0.13) [1], and its dynamical friction coefficient almost has nothing to do with friction velocity, furthermore, there are some features for paper-based friction material , such as elasticity, looseness (loose rate 40 ~ 50% ) and good lubrication resistant performance, but it also has some disadvantages, such as poor heat resistance, and easy to burn out and wear, so it is necessary to ensure the good cooling , lubrication and shorter friction time during friction clutch running-in [2]. 2 The friction torque calculation Three states of friction clutch operating are separation, running-in (unlocked), clutch engagement.
(1) If the thermal conductivity coefficient of the friction material becomes smaller, or the sliding-grinding time during running-in process is too long, the temperature of the friction materials could overtop abnormally, and the friction discs could be damaged
Conclusions In order to improve the comprehensive performance of friction clutch, the following measures could be taken to reduce the rate of temperature rise of the friction materials
(4) Using forced cooling, such as oil circulation cooling, to reduce the temperature rise of the friction material.
[4]J Zhou, Y Gao: Numerical Solution of Temperature Field of Main Clutch Friction Plate [J], Journal of PLA University of Science and Technology(Natural Science), 2003,01:58-62

Introduction Steel slag has enormous application in construction building materials because of its hydration activity.
Chemical compositions of steel slag before and after SAM treatment /wt% Materials CaO SiO2 Al2O3 Fe2O3 MgO P2O5 Steel slag 39.52 18.07 4.75 18.67 8.77 0.47 Residue 21.47 3.58 14.52 40.39 12.57 0.96 (a) (b) Fig. 2.
Chemical compositions of steel slag before and after KOSH solution treatment /wt% Materials CaO SiO2 Al2O3 Fe2O3 MgO P2O5 Steel slag 39.52 18.07 4.75 18.67 8.77 0.47 Residue 29.47 34.87 6.25 15.45 10.38 0.85 Table 4.
Acknowledgements This work was financed by National Natural Science Foundation of China (50872043) and Science and Technology Program of Department of Education in Shandong Province (J08LA12).
Tang: Journal of the Chinese Ceramic Society.

Comparative Analysis of Static Strength of Traditional and Bionic Semi-trailer Frame Qiufang Han1, a, Qibai Huang*2, b and Shande Li3, c 1, 2, 3 School of Mechanical of Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China 1, 2, 3Hubei Institute of Specialty Vehicle, Suizhou, 441300, PR China ahanqiufang@hust.edu.cn, bqbhuang@mail.hust.edu.cn, c lishande@foxmail.com * Corresponding author: Tel.: +86 027 87557664; fax: +86 027 87544175 Keywords: Semi-trailer frame; Bionic; Static strength Abstract.
In response to complex road conditions and illegal overload operation, semi-trailers were always designed with excessive strength and stiffness causing overmuch waste of materials and energy.
People have drawn lessons from the inspirations of biological structure in design of engineering materials and structures in many fields.  
By applying the bionic structure in design of semi-trailer frame, we can enhance lightweight effect of the frame to save more materials and reduce more production cost and energy consumption.
References [1] Xu Jianquan, Su Jiandeng，Chen Mingnian: Finite element analysis of flat-plate semi-trailer frame, Journal of Fujian University of Technology.

Advances in Water Science, 2005, 16 (3) :384- 390.
Advances in Water Science, 2003, 14(2):193-196.
Journal of Hydraulic Engineering, 2007,38(5):511-517 ( in Chinese) [15] H.
China Environmental Science, 2008,28(8):725~729.
Journal of Zhejiang University (Engineering Science) ,2002,36(5):582-587.

The undeformed material attempts to restore the original shape of the surface, inducing plane compressive residual stresses field in the first outer layers [2].
In this work, the material behavior law of Ti-6Al-4V is supposed elasto-visco plastic modelled by the Johnson Cook material model with damage [5].
Yao, “Effect of laser shock processing on the mechanical properties and fatigue lives of the turbojet engine blades manufactured by LY2 aluminum alloy”, Journal of Materials & Design, Vol. 30, Issue 5, pp. 1697-1703 (2009) [2] K.Ding and L.Ye, “Laser shock Peening: Performance and process simulation”.
Montross, Tao Wei, Lin Ye, Graham Clark, Yiu-Wing Mai, “Laser shock processing and its effects on microstructure and properties of metal alloys: a review”, International Journal of fatigue, Vol. 24, Issue 10, pp.1021-1036 (2002)
Hassine, “Finite element prediction of Laser Shock Peened surface modifications in Ti-6Al-4V alloy”,   Key Engineering Materials, Advances in Fracture and Damage Mechanics VIII, Vols. 417-418, pp. 853-856(2010) [6] Minitab User Manual (Release 15), “Making data analysis easier”, USA (PA); MINITAB Inc.