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Liu [5] summarized the relevant experience of landscape arch bridge in views of the size draw-up, the use of materials, the convenient for construction and the nightscape lighting.
Generally, the footbridge made the unity of modern building materials such as reinforced concrete and fine stone decoration material, the coordination of new T-frame with slope deck and plate arch and the combination of advanced construction methods.
Yang: Journal of Henan University (Natural Science) No.1 (2010), p.101-104
Li: Applied Mechanics and Materials Vols.201-202 (2012), p.821-824
Liu: Applied Mechanics and Materials Vols. 90-93 (2011), p. 1112-1115

Morpholog and conductivity of high-solid content waterborne polyurethane dispersions with sulfonated polyol and carboxylic polyol as compound hydrophilic chain extender Xiaoli Wei1a Faxing Zhang1b, Dejun Cheng1c (1Department of material and chemical engineering, Sichuan institute of technology ,Zigong, 643000) awxlmylove@126.com,bzfx1979228@163.com, c314205723@qq.com Keywords:warterbornepolyurethane,High-solidcontent,Morpholog,Conductivity,sulfonated polyol sulfonated polyol and carboxylic polyol Abstract In this study , a type of compound hydrophilic chain extenders composed of a polyol containing short sulfonated side chain ,designated as DHPS and dimethylolpropanoic acid( DMPA), were used to prepare high-solid content waterborne polyurethane by self-emulsification .The effect of ratio of DHPS and DMPA on morpholog and the particle size of waterborne polyurethane were analyzed.
Experimental Materials.
Patent 6,444,746.(2002) [4]Kong Lifen, Linhua Yu: submitted to Journal of Chemistry and Bonding(2007) [5]Liqing An,Dongcheng Sun,Yuxiang Wang:submitted to Journal of Polymer Materials Science and Engineering(2007) [6] Jin-qing Qu, Huan-qin Chen: submitted to Journal of Chemical Industry and Engineering(2003) [7]Dong-cheng Sun,Chung-yuan Huang:submitted to Journal of Chemical Industry and Engineering(2009) [8]Lee H T , Wu S Y:submitted to Journal of Colloidl Surf ace A (2006) [9]Xiao-Li Wei,Fa-xing Zhang,zhong-Liang Xiao and Xiao-qing Wu: submitted to Journal of Acta Polymerica Sinica (2009) [10]Hai-hua Wang,Yi-Ding Shen,Gui-qaing Fei,Xiao-jing Fan: submitted to Journal of Acta Polymerica Sinica( 2007)

Introduction Autoclaved Aerated Concrete(referred to AAC) is a porous crystalline material formed by cement, lime, silica sand ,etc on the conditions of high temperature , high pressure and steam curing.In the present, AAC block is mainly used for maintenance wall in our country and its application is capped.
References [1] Yushun Guo; Aiping Lu; Zili Guo: submitted to Journal of Tsing Hua University(Engineering Science),In Chinese (1996) [2] Jian Yao, Zhibin Xia, Jiaxi Yan: submitted to Journal of Zhejiang University(Engineering Science), In Chinese (1993) [3] Shuming Tian: Study on Static Behavior and Aseismic Performance of Autoclaved Aerated Concrete (AAC) Block Bearing Walls[D], Master Thesis, In Chinese (2004) [4] Yong Cai, Chuxian SHI,etal: submitted to Journal of Building Structures, In Chinese (2004) [5] Jinghai Yu, Wei Jiang,Feng-dong Liu: submitted to Journal of Tianjin University,In Chinese (2006) [6] Chengwen Zhao, Liang Zhang,etal:submitted to Journal of Shenyang Jianzhu University(Natural Science), In Chinese (2009) [7]Chengwen Zhao, Junjie Dai etal:submitted to Journal of Shenyang Jianzhu University (Natural Science), In Chinese (2008) [ 8] Na rayanan N, Ramamurthy K:submitted to Journal of Cementand Concrete Composites (2000) [ 9] Trunk B, Schober G, Helbli ng A K
, etal submitted to Journal of Cement and Concrete Research (1999)

Table.2 Thermal physical parameters of materials Material Thermal conductivity [] Specific heat capacity [] Density [] Aluminum 121.4 920.9 2780 Steel 33.7 233 7860 Results and Discussion Thermal Results of Analysis and Discussion.
Acknowledgements This paper is supported by the Knowledge Innovation Program of the Chinese Academy of Sciences.
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Pruncu, Experimental assessment on machinability performance of CNT and DLC coated HSS tools for hard turning, Diamond and Related Materials, 119 (2021) 108568
Venkatesh, Multiobjective performance investigation of CNT coated HSS tool under the response surface methodology platform, Archives of Metallurgy and Materials, 66 (2021) 627-635
Alarifi, Machinability Performance Investigation of TiAlN-, DLC-, and CNT-Coated Tools during Turning of Difficult-to-Cut Materials, Journal of Nanomaterials, 2022 (2022)
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System Science System Science originated in the road.
Use of materials, equipment and procedures, to achieve personal computer assembly in the field of manufacture of ordinary people dream of impending digital management, use of technical means to share knowledge and innovations that will change education approach Government level and the industry value chain.
For the metallurgical, materials, energy and other upstream industry chain known for its run enterprises will play a role in promoting.
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High speed train, integrated modern machinery, materials, computer, electrical and other disciplines of high technology, was the epitome of the modern industrial development level in today’s city [3].
Acknowledgements The authors wish to thank Developments for National Natural Science Foundation (51275432) for funding this work and Graduated Student Innovation Foundation of Sichuan university of Science & Technology (y2014030) for funding this work.
Engineering Sciences.2009,11(10):8-18(In Chinese) [4]Ministry of Science and Technology of the People's Republic of China.Chinese major projects of independent innovation through the acceptance of high speed train[EB/OL].Qingdao science and Technology Bureau.2014.6(In Chinese) [5] Youjie Song,Hongliang Zhang ,Shusen Liu .
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EXPERIMENTS Materials PLA (4032D) was purchased from Natureworks LLC. 4032D, with mostly an L-configuration, consists of around 1.5% D-lactide in the main chain.
Journal of Applied Polymer Science Vol. 107 (2008), p. 2246
Journal of Functional Materials (Chinese) S2 (2011), p. 295
Journal of polymer science: Part B: Polymer Physics Vol. 46 (2008), p. 589
Journal of Applied Polymer Science Vol. 118 (2010), p. 3558

Introduction Optimization design of automobile suspension springs has been always a seeking answer for automotive science and technology workers in the field of automobile engineering.
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