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Study on DC double pulse MIG welding of automobile aluminum alloy Zhaodong Zhang 1, a, Xiangyu Kong 1,b 1 Key Laboratory of Liaoning Advanced Welding and Joining Technology, School of Materials Science and Engineering, Dalian University of Technology, Dalian，116024, China.
Therefore, a need for weight reduction has emerged and this in turn has led to the increased application of lightweight materials, such as aluminum and polymer composites.
Tensile specimens with the gauge length of 50mm and the gauge width of 26mm (GB2651-81) are evaluated by a material test system (DNS) at the load rate of 2 mm/s.
Hao, Low-power laser/TIG hybrid welding process of magnesium alloy with filler wire, Materials and Manufacturing Processes. 25 (2010) 1213-1218
He, The CMT short-circuiting metal transfer process and its use in thin aluminum sheets welding, Materials and Design. 30 (2009) 1850–1852

Research of Beta-Endosulfan Based on THz Time-Domain Spectroscopy Zhe Liu1,a, Xian Li1,b, Feiheng Yue1,c, Lu Feng1,d, Jinhui Cai2,e, Xusheng Kang1,f and Pingjie Huang1,*g 1State Key Laboratory of Industrial Control Technology / Department of Control Science and Engineering, Zhejiang University, Hangzhou, China 2China Jiliang University, Hangzhou, China alegend_liuz@yahoo.com.cn, bl_x_j_y@126.com,cyfhycg@gmail.com, dfenglu_0612@163.com, ecai_jh1974@yahoo.com.cn, fkangxusheng@yahoo.com.cn, *ghuangpingjie@zju.edu.cn *Corresponding Author Keywords: THz-TDS, beta-endosulfan, absorption peak, Dmol3 Abstract.
It measures wave response in THz wave band to obtain characteristic spectra of measured materials.
High signal-to-noise ratio of THz-TDS measurement technology and broadband of single THz pulse, help THz-TDS technology analyze and evaluate the material compositions and the subtle changes of the material structure[7-16].
Research of THz spectroscopy is mainly about light resource generation and material molecular simulation and calculation.
Table2 Parameters of beta-endosulfan crystal Crystal space group P21/c Lattice parameter a:8.244Å b:10.104 Å c:17.320 Å Alpha:90.00° Beta:95.48° gamma:90.00° Fig.6 Structure of beta-endosulfan molecule Fig.7 Structure of beta-endosulfan crystal For the crystalline compound the solid-state calculation have been performed with density functional theory (DFT) by using the DMol3 program, as a part of Materials Studio package.

Research on Corrosion Resistance of Titanizing and Nitriding on Carbon Steel in H2SO4 solution Gentao Bu 1,a, Yuan Gao 1,b, Chenglei Wang 1,c 1School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, Guangxi, China, 541004, www.guet.edu.cn aclw0919@163.com, b gaoyan50@126.com,c 13978375394@163.com Key words: Titanizing; Plasma nitrided; Corrosion resistance; Polarization curve Abstract: Q195 steel was treated with titanizing followed plasma nitriding by glow plasma alloying technology using single pulse power supply.
Introduction Corrosion problems of material have always been a research hotspot [1].
Corrosion resistance of material surface can be increased by surface modification technology [2].
It has some reference significance to selection of the working layer materials in acid environment containing SO42-.
In the case of polarization measurement, corrosion current obtained from the polarization curve was used to evaluate the corrosion resistance of materials.

World Earthquake Engineering Vol. 25 (2009), p. 1.
Journal of Earthquake Engineering and Engineering Vibration Vol. 29 (2009), p. 103.
World Earthquake Engineering Vol. 22 (2006), p. 131.
World Earthquake Engineering Vol. 24 (2008), p. 14.
China Civil Engineering Journal Vol. 15 (1982), p. 53.

Netto2 1,2Aerospace Engineering of the School of Mechanical Engineering University of New South Wales Australia, NSW 2052 a corresponding author; email: n.ahmed@unsw.edu.au Key words: CAD/CAM, CNC milling, rapid prototyping, vertical axis wind turbine, winglet Abstract In this paper the computer aided design and manufacture of a rot with winglet for performance enhancement of a vertical axis wind turbine is presented.
This machine could generate complicated 3D shapes out of ABS material.
[3] Ahmed, N.A., “Engineering solutions towards cost effective sustainable environment and living,”Journal of Energy and Power Engineering, Vol. 6, No. 2, 2012, pp. 155-167
Part G, Journal of Aerospace Engineering, Vol. 205, 1991, pp. 1-12
Vols. 215-216 (2012) pp 785-795, © (2012) Trans Tech Publications, Switzerland [83]Shun, S., and Ahmed, N.A., ‘Rapid Prototyping of Aerodynamics Research Models’, Applied Mechanics and Materials Vols. 217-219 (2012) pp 2016-2025,© (2012) Trans Tech Publications

The management of renovation project of shanty towns is a form of application of project management in construction engineering.
The renovation project of shanty towns is a complicated system engineering which is constituted of several subdivisions that are interdependent, interactive, interactional and inter-contained.
As a result, management personnel shows different levels of professional knowledge and becomes disqualified for managing large-scale and complicated engineering projects, which brings the whole work efficiency of management organization down to a new low level.
The renovation project management of shanty towns is a relatively long system engineering, in which managers will confront with investment decision-making, construction organization, maintenance and external exchange involving many fields as engineering technology, management, economy, law and environment.
The final goal is to realize such goals as improving housing conditions, the environment, urban functions, and the supply structure of housings, as well as effectively increasing the supply of town houses, stabilizing housing price, and directly driving the development of relevant industries as construction, building materials and furniture, and solving social employment and re-employment.

Chinese Journal of Geotechnical Engineering.
Chinese Journal of Geotechnical Engineering.
Chinese Journal of Geotechnical Engineering.
Chinese Journal of Geotechnical Engineering.
Chinese Journal of Geotechnical Engineering.

Engineering Structures,Vol.22(2000)No.2.pp: 201-209 [2] T.B.Panagiotakos, M.N.Fardis.
China Civil Engineering Journal, Vol.36(2003)No.5,pp:22~29.
China Civil Engineering Journal, Vol.38(2005)No.9,pp:53~60.
Earthquake Engineering and Structural Dynamics, Vol.34(2005),pp:101-124 [9] Chopra A K, Goel R.
Dynamics of Structures: Theory and Applications to Earthquake Engineering (Second Edition).

The Coupling Bioreactor for Domestic Wastewater Reclamation and Sludge Reduction Chunrong Wang1,a,Jun Li2,b 1School of Chemical and Environmental Engineering China University of Mining and Technology(Beijing) Beijing, China 2The Key Laboratory of Beijing for Water Quality Science & Water Environment Recovery Engineering Beijing University of Technology Beijing, China e-mail: awcrzgz@gmail.com,bjglijun@bjut.edu.cn Keywords: Coupling bioreactor; sludge reduction; flow separate Abstract.
Fig.1 Move of object in the river Materials and Methods Equipment and Materials The porous carriers: Based on the theory of the flow separation, the novel porous carrier was adopted in order to provide a flow-separation field to capture the suspended matters and a survival site for microbial community.

The Design about Aiming at Amount of Change from Baseline Detector with Characteristics of High-resolution Wang Jin-song1,a,Zhao Yu-chen1,b, An Zhi-yong1,c 1.School of optoelectronics Engineering, ChangChun University of Science and Technology, China ChangChun 130022 asolid1973@163.com, bbernard19@163.com ,c an_zhiyong@126.com Keywords: Technology of Instrument and Meter; Aiming sight; Target baseline of variations ; Flat glass-based compensation method; Similar Sine mechanism Abstract.
We select optical material which has high refractive index, this may reduce the thickness of the lens, at the same time simultaneously the radius increases, thus obtains the larger field of view.
Doublet objective is composed with the convex and negative lens, the convex one’s material is LAK11 and K9, the concave one’s material is ZF1.
The material that the flat glass uses is K9 which the refractive index is 1.51637, substitution the above data to formula: (8) May result in d=11.26mm.
Test of parallax parameters for optoelectronic sight in small arms [J].Optics and Precision Engineering.2010.18(8):1732-1737.