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Introduction With the advancement of technology, optical Aspheric parts are widely used in military, aerospace, meteorology, civil and other fields because of its good image quality and other advantages, so the processing has been focused on by more and more people [1,2,3].
Summary Chunmin Shang, male, born in 1970, School of Mechanical and Electrical Engineering, Changchun University of Science and Technology, Assistant Professor, mainly engaged in precision and ultra-precision machining.
Communication address: School of Mechanical and Electrical Engineering, Changchun University of Science and Technology,No.7089,Weixing Road, Changchun, China.
Optoelectronic Engineering, 2000,27 (3) :16-20(in Chinese)
Changchun: School of Mechanical and Electrical Engineering, Changchun University of Science and Technology, 2004(in Chinese).

Mohammed3,e 1 Center of Excellence Geopolymer and Green Technology, School of Material Engineering, Universiti Malaysia Perlis (UniMAP), P.
Box 77, d/a Pejabat, Pos Besar, 01007 Kangar, Perlis, Malaysia. 2School of Environmental Engineering, Universiti Malaysia Perlis (UniMAP), P.
Acknowledgements This study was supported by Center of Excellence Geopolymer and Green Technology UniMAP and School of Material Engineering, UniMAP.
Santoro: Procedia Engineering.
Shafiq: International Journal of Civil and Environmental Engineering.

Applicability study of Peck formula applied to shield tunneling in the loess area Rongdi Liu1, a, Jianguo Zheng2,b and Zhiyuan Li3,c 1Department of Civil Engineering, Xi'an University of Architecture&Technology, China 2China JK Institute of Engineering Investigation and Design, China 3Zhengzhou Light Metals Research Institute Of CHALCO, China a15720084@qq.com, blrd1986@sohu.com, c285339752@qq.com Keywords: Xi’an subway, shield construction, surface settlement, Peck formula, trough width parameter, volume loss.
Volume loss is mainly related with engineering geology, hydrogeological conditions, tunnel construction methods, construction technology level and the experience of project management.
The value of i can be get through counter-analysis of Formula (1) based on the measured data of ground settlement, and then the value of η can be get by the following formula: (4) Fitting contrast of measured settlement curve with Peck formula The engineering background of this paper is a shield construction segment of Xi'an metro line 2, geological conditions of this segment are as follows: artificial fill, new loess, fossil soil, silty clay, silt, fine sand, medium sand and grit etc.
Chinese Journal of Underground Space and Engineering, Vol.6, No.4:789-793.(2010) [6] Song Kezhi, Wang Mengshu, Sun Mou.

Synthesis and Foaming Performance of Lauramidopropyl Betaine Derivate Surfactants Bo Yang1,a*, Bo Yun2, Xiao Lu2, Qiaona Liu1, Zhifei Song3, Shijun Chen1,4, Gang Chen1,4 1Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, Xi’an Shiyou University, Xi’an, China. 2Oil Production Plant No. 11, PetroChina Changqing Oilfield Company, Xi’an, China. 3School of Civil Engineering, North China University of Technology, Beijing, China. 4State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing, China.
Colloids & Surfaces A Physicochemical & Engineering Aspects. 252(2) (2005) 105-111
Chemical Engineering Research & Design. 89(11) (2011) 2344-2355
[13] Mao J., Yang X., Chen Y., Zhang Z., Chong Z., Bo Y., Viscosity reduction mechanism in high temperature of a gemini viscoelastic surfactant (ves) fracturing fluid and effect of counter-ion salt (kcl) on its heat resistance Journal of Petroleum Science & Engineering. 164(2018) 189–195
Journal of Petroleum Science & Engineering. 78(2) (2011)220-227

Consequently, it is actively used as a civil or military protection shield, such as in the bulletproof glass of armored vehicles.
Harada: Engineering Plastics (Editora Artliber São Paulo. 2005).
Díaz: Advances in Materials Science and Engineering Vol. 28 (2018), p. 1
Wang: Materials Science and Engineering A Vol. 527 (2010), p. 1461
Boyce: Journal of Engineering Materials and Technology Vol. 128 (2006), p. 543

Faculty of Civil and Environmental Engineering, University Tun Hussein Onn Malaysia, 86400, Parit Raja Batu Pahat, Johor, Malaysia Corresponding Author: abdulkan2000@yahoo.com Keywords: POME, Cow Bone, Adsorption, BET Abstract.
Chemical engineering journal 479-486
Journal of industrial and Engineering Chemistry. 4014-4021
Research Journal in Engineering and Applied Sciences.308-313
Technology and engineering

Hardjito, Improving the durability of pozzolan concrete using alkaline solution and geopolymer coating, Procedia Engineering, 125 (2015) 747-753
Strano, The Strength of Alkali-activated Slag/fly Ash Mortar Blends at Ambient Temperature, Procedia Engineering, 125 (2015) 650-656
Korovkin, The Effect of the Mixture Composition and Curing Conditions on the Properties of the Geopolymer Binder Based on Dust Crushing of the Granite, Procedia Engineering, 150 (2016) 1605-1609
Korovkin, The influence of parameters of mineral alkaline binder composition on the strength and shrinkage of concrete, Bulletin of Volgograd State University of Architecture and Civil Engineering.
Kalashnikov, Structural-topological analysis of composite binders, Proceeding of intern. scientific and engineering conference on new energy- and resource-intensive technologies in the production of building materials, Penza, (2006) 78-84.

Vibration propagation law in different areas of tunnel face caused by blasting Jianjun Shi 1, a, Li Xue 2 , Qi Zhang1, Haili Meng 2 1State Key Laboratory of High-Efficient Mining and Safety of Metal Mines (University of Science and Technology Beijing), Ministry of Education, Beijing 100083, China; 2Railway Engineering Research institute, China Academy of Railway Sciences, Beijing 100081, China; akeyan@ces.ustb.edu.cn Keywords: Tunnel blasting, tunnel face, blasting vibration, attenuation law, vibration control Abstract.
Engineering and Construction, Vol.27 (2013), p.652( In Chinese)
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING, Vol.13 (2013), p128 [3] Li Xue, Fufeng Sun, Nianhua Yang.
Chinese Journal of Underground Space and Engineering, Vol.6(2011), p35(in Chinese)
Chinese Journal of Rock Mechanics and Engineering, Vol.23 (2014), p 4744(in Chinese)

Numerical Simulation on Wave Force Acting on the Hollow Blocks Chen Xue-feng, Yang Kang, Li Yu-cheng The R&D Center of the Civil Engineering Technology, Dalian University, Dalian 116622, China E-mail：chenxfdl@163.com Keywords: VOF ; Hollow block ; Porous media ; Wave force Abstract.
Some extensive studies have been carried out on wave induced forces acting on the new absorbing structures for the engineering design.
Hollow block model Physical model experiment Physical model experiment was carried out in wave flume at the State Key Laboratory of coastal and offshore engineering in Dalian University of Technology [8].
Proceeding of coastal engineering, 1781-1798(1980) [3] Mizutani N, Mostafa A M, Iwata K.
Coastal Engineering, 33 (2): 177-202(1998) [4] SUN Zhao-chen, QIU Da-hong.

Influence of Strain Hardening on Sectional Capacities of Cold-Formed Rectangular Hollow Steel Sections Ngoc Hieu PHAM 1, a 1Faculty of Civil Engineering, Hanoi Architectural University, Hanoi, Vietnam ahieupn@hau.edu.vn Keywords: Strain hardening; Sectional capacities; Cold-formed steel; Rectangular hollow sections.
Proceeding of the 3rd International Conference on Structural Engineering, Mechanics and Computation (2007)
Engineering Structures, vol. 33, no. 12, pp. 3197–3207 (2011)
Journal of Structural Engineering, vol. 142, no. 2 (2016)
[11] JF Engineering Product LLP.