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[7] Q Wang, P Yan, Construction and Building Materials, 2010, 24(7), 1134
[9] J.Y Sun, Journal of Building Materials, 2005, 8(1), 63 (in Chinese)
[15] Y.S Liao, G.X Jiang, K.J Wang, et al, Construction and Building Materials, 2020, 265
[29] D.M Zhang, M.S Lu, F.X Liu, Advanced Materials Research, 2011, 168-170, 369
[30] L.F Zhang, X.Q Qian, C.D Yu, et al.Construction and Building Materials, 2019, 226, 299

China, 215007 2School of Environment Science and Engineer, Suzhou University of Sciences and Technology, Suzhou, Jiangsu, P.
In the same way, the hard resin workshop, raw materials, etc in the original Suzhou resin places were attributed to organic toluene, dimethylbenzene pollution sections.
This pollution is mainly located at two sections of the original sesin and material workshops, and the largest pollution depth is up to -6m.
Chinese Journal of Environmental Engineering (in Chinese), 2011, Vol.5, No.7: 1441-1453
Hazardous Waster & Hazardous Materials, 1990, 7(2):117~149

Study on the Maximum Contact Stress of Involute Gear Pair with a Small Number of Teeth LIU Yanfeng1,a, SUN Yuehai1,2,b , SUN Qiang1,c and XIAO Jing1,d 1 School of Mechanical Engineering, Tianjin University, Tianjin, 300072, PR China 2 Engineering Research Center of Light-duty Power Machine of Ministry of Education, Tianjin University, Tianjin, 300072, PR China ajxliuyanfeng@163.com,byuehaisun@tju.edu.cn,csunqiang1216@sina.cn,dxiaojingaz@126.com Key words: Involute gear pair with a small number of teeth, Contact strength, Contact ratio, Precalculated position of contact stress Abstract.
As shown in Table 2, both gears are made of the same material 20CrMnTi; its modulus of elasticity is 207GPa; its Poisson's ratio is 0.25; its allowable contact stress is 1200MPa; and the load per unit of contact line is 4N/mm.
Zhang: Mechanical Engineer, (2010) No.10, p.15.

These engineered particles dispersed in a base fluid have numerous applications such as in micro electromechanical systems (MEMS), nano-electromechanical systems (NEMS), biomedical engineering (imaging and ablation), nuclear reactors and extraction of geothermal power.
The stability of the nanofluids is a key to ensuring the dispersion of the nanoparticles in the base fluid.
Sandeep, JV R.R, Impact of Brownian motion and thermophoresis on bioconvective flow of nanoliquids past a variable thickness surface with slip effects, Multidiscipline Modeling in Materials and Structures, (2019) [11] K.A Kumar, V.
Ahmadi, Self similar solution of incompressible micropolar fluid boundary layer over a semi-infinite plate, International Journal Engineering Science 14 (1976) 639-646 [39] N.A Yacob, A.
Ishak, MHD flow of a micropolar fluid towards a vertical permeable plate with prescribed surface heat flux, Chemical Engineering Science Research Design, 89 (2011) 2291-2297 [40] S.

Dória Silva7 1Universidade Federal de Pernambuco - UFPE, Recife, PE, Brazil 2Computer Engineer Universidade do Estado de Pernambuco - UPE, Recife, PE, Brazil 3Biologist, Universidade Católica de Pernambuco - UNICAP, Recife, PE, Brazil 4Production Engineer, Faculdade Boa Viagem - FBV, Recife, PE, Brazil 5Technologist Computing, Instituto Brasileiro de Tecnologia - UNIBRATEC, Recife, PE, Brazil 6Student, Universidade Católica de Pernambuco - UNICAP, Recife, PE, Brazil.
Abnormalities of retinal blood circulation and drainage of metabolic secretions are key indicators to retinal dysfunction and may point to perturbations of systemic circulation.
Silva: Simulation of the Errors of Refraction in the Human Eye (Accepted for Book/Volume/Conference: Analysis and Design of Biological Materials and Structures, 2011)

[6] Palermo, A, Pampanin, S, Fragiacomo, M, et al., Innovative seismic solutions for multi-storey LVL Timber Buildings, 9th World Conference on Timber Engineering, Portland, Oregon, USA, 2006
[8] Tsai, K-C, Wu, A-C, Wei, C-Y, et al., Welded end-slot connection and debonding layers for buckling-restrained braces, Earthquake Engineering & Structural Dynamics, 43 (2014): 1785-1807
[10] Oktavianus, Y, Goldsworthy, HM, Gad, E, et al., The Influence of Key Design Parameters on the Cyclic Axial Behavior of Innovative Replaceable Buckling Restrained Fuses (RBRFs), Journal of Earthquake Engineering, (2017): 1-22
[11] Clifton, GC, Semi-rigid joints for moment-resisting steel framed seismic-resisting systems. 2005, Department of Civil and Environmental Engineering, The University of Auckland: New Zealand
PEER Ground Motion Database - Pacific Earthquake Engineering Research Center. 2013 [cited 2016; Available from: http://ngawest2.berkeley.edu/

Lee 4,e 1 Now at the Korea Institute of Machinery & Materials, 66 Sangnam, Changwon-city, Kyungnam 641-010, Korea 2 Division of Mechanical Engineering & Mechatronics, Kangwon National University, 192-1 Hyoja 2-Dong, Chunchon, Kangwon 200-701, Korea 3 Department of Materials Science and Engineering, 2041 College Rd., Ohio State University, Columbus OH 43210, USA 4Mechanical Engineering, 201 W. 19th Avenue, Ohio State University, Columbus OH 43210, USA a mang92@kims.re.kr, b finalrd@kangwon.ac.kr, ckhy@kangwon.ac.kr (*corresponding author) dwagoner.2@osu.edu, elee.71@osu.edu, Keywords: Springback; Sheet metal forming; AZ31B alloy; Plastic anisotropy, Asymmetry, Draw-bend test Abstract.
Two different rollers with radii 11.1mm and 19.05mm were utilized and the various levels of the restraining back force normalized with material yield strength were applied.

The equipment, similar to the previously installed one, was manufactured at the chemical engineering plants located in the Urals.
High rates of consumption of materials and energy.
Easy preparation of raw materials.
Reducing unit norms of consumption materials and energy resources.
In Advanced Materials Research. (524), 106-110

The Economics Analysis of Large-scale Project Organization Yonghong Chen1,2, a, Ning Xu3,b 1, School of Economics and Management ,Tongji University,Shanghai,200092,China 2 School of Architectural Engineering, kunming Metallurgy College, Kunming, Yunnan,650033,China 3Technical economy and management, Kuming university of science andtechnology,Kunming,650500, China a Chenyh7600@yahoo.com.cn b bening@live.cn Keywords: Neo-institutional economics Principal-agent theory Transactions Costs theory Economic analysis Abstract.
Introduction The system structure of Large-scale engineering organization has a deeper complexity than the average project.
The key of determining the principal-agent relationship is the clients make sure a reward mechanism to encourage agent conscientiousness, and strive to achieve the goal of maximizing the interests of the clients.
From an economic view to analyze, construction progress of large-scale project is a kind of economic relationship including government, the client, investor, contractor, supervision unit, material supplier and others participants, it is a economic system formed by the interaction of main bodies.In this economic system, there is serious information asymmetry in the related subjects of large-scale project.
The task of supervising engineer is to shorten the construction cycle, to meet the requirement of project quality, to reduce project investment and saving construction cost for the owner, and then to achieve the maximum owner’s benefit[6].

The Influence of Gas Source Conversion on Flow and Reliability of Gas Pipe Network Zhao Lei1,a, Yu Lixin2,b 1Jilin Architectural and Civil Engineering Institute, Changchun, Jilin, China 2Changchun Gas Heating Design and Research Institute, Changchun, Jilin, China azhao0438@126.com, bylgas@163.com Key Words: Conversion; Design parameters; Optimization; Flow; Hydraulic condition Abstract: Maximal operation pressure, minimal allowed pressure, number of source points have greatest impact on flow and reliability of pipe network.
Pipe material, source position, the source point pressure, minimum allowed pressure are the most important factors.
George Segeler, Gas Engineers Hardbook.
Fuel Gas Engineering Practices ,93 Worth Street, New York, N.Y.1965 [2] Liancheng Jiang, Gas and Heat, 2002, 22 (2): 120-122 [3] Changgui Duan, Gas Transmission and Distribution (Edition 4) (In Chinese), China Architecture and Building Press, Beijing 2011 [4] Youjia Li,Design and Practice of Gas Transmission and Distribution System (In Chinese), China Architecture and Building Press, Beijing 2007