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Start-up of the anaerobic fluidized bed Xiaoming Sun1,a, Jingyang Liu 1,b, Qi Qiao1,c * 1State Environmental Protection Key Laboratory of Eco-Industry, Chinese Research Academy of Environmental Sciences, Beijing 100012, China asunxm52@126.com, bliujy@craes.org.cn, cqiaoqiqiaoqi@126.com Keywords: anaerobic fluidized bed, started-up, organic loading, pH, alkalinity Abstract.
experiment equipment, materials and methods 1.1 experiment device The experiment equipment and process is shown in figure 1.
Acknowledgements This work was financially supported by the Major Science and Technology Program for Water Pollution Control and Treatment(2012ZX07202-001) and Program of International Scientific and Technological Cooperation (2010DFB90590).
Feng: Chinese journal of environmental science, Vol. 10(1989), p.10 [2] P.

Pre-evaluation of Durability for Concrete Bridge Xuezhong Zheng1,2,a, Jianfan Lin1,2,b 1Fujian Institute of Communications Science and Technology, Fuzhou, China 2Fujian Key Laboratory of Highway & Waterway Engineering, Fuzhou, China azxz8372@163.com, bljffjfz@163.com Keywords: pre-evaluated, durability, concrete bridge Abstract: Assessment system of durability for concrete bridge was built in this paper, and the time variable was introduced in the system.
Acknowledgements This work was supported by the western traffic science and technology (No. 200631822302-04).
Journal of Materials in Civil Engineering. 2007, (7):591-599
Durability of Concrete Structure.Beijing: Science Press, 2002

Material Models Fig. 4 provides a schematic representation of the material models utilized in the analysis of concrete and steel from experimental work.
a) Material model of the concrete b) Material model of the steel Fig. 4.
Material models for concrete, and reinforcing the steel 6.
Tung, Investigation of the effects of opening size and location on punching shear resistance of flat slabs using ABAQUS, Journal of Science and Technology in Civil Engineering (STCE)-HUCE. 15, 4 (2021) 136-147
Hossain, Numerical assessment of slab–column connection additionally reinforced with steel and CFRP bars, Arabian Journal for Science and Engineering. 44 (2019) 8181-8204

Hydrogen Storage Mechanism of Fe3O4: A First-principles Study Hao Zhang1, a , Nanpu Cheng1,b, zhiqian Chen1,c and Qun Hui1,d * 1Faculty of Materials and Energy, Southwest University, Chongqing, 400715, China azhangh710021@163.com, bchen_zq@swu.edu.cn, ccheng_np@swu.edu.cn, dqhui01@swu.edu.cn Keywords: Hydrogen Abstract: The adsorption and dissociative adsorption of a hydrogen molecule on Fetet1- terminated Fe3O4 (111) surfaces are investigated within the framework of density function theory.
XDJK2010C017) and National Natural Science Foundation of China (Grant No. 51171156).
First-principles study of atomic hydrogen adsorption on Fe3O4 (100), Surface Science. 605 (2011) 1067-1073 [6] Yang T, Wen X D, Huo C F, et al.
Atomic geometry of steps on metal-oxide single crystals, Surface science. 574 (2005) 306-316 [21] Zhu L,Yao K L,Liu Z L.
The effect of defects on the hydrogenation in Mg (0001) surface, Applied Surface Science. 256 (2009) 46-51 [24] Kerr J A.

Xia: Science & Technology Review Vol. 28 (2010), p. 103.
Li: Journal of Yangtze River Scientific Research Institute Vol. 28 (2011): p. 35.
Riha: Environmental Science & Policy Vol. 17 (2012), p. 12
Thompson: Science Vol. 340 (2013), p. 1288
Riha: Journal of Environmental Management Vol. 120 (2013), p. 105

Study on the fractal behavior and fractal characterization of guide way joint surface Zhu Yanga ,Lihua Wang*,b,Haisong Shic and Pengcheng Wangd Kunming University of Science and Technology, 650500 , China a1061255723@qq.com, bkmwanglihua@163.com, c525226060@qq.com, d362616617@qq.com Keywords: guide way joint surface; fractal dimension; structure function method Abstract.
The 3D surface topography of specimen which is closed to machine tool guide way both in material and processing condition is obtained by atomic force microscope (AFM).
In this paper, the structure function method is used to characterize fractal dimension of specimen, which is closed to machine tool guide way both in material and processing condition.
Acknowledgements This work was financially supported by the National Natural Science Foundation (51165013).
ASME journal of tribology, 1990, 112(1):205-216

Introduction Lead and zinc are important industrial raw materials.The sintering process of lead and zinc production is a complicated chemo-physical process, which involves physical and chemical changes such as evaporation and condensation of water, decomposition of solid materials, oxidation-reduction reactions, solid-state reaction and the melting and casting of chemicals.
When each material in sintering furnace charging has the lowest bulk specific gravity with a certain level of moisture, which enables the maximum capacity of the material, the best level of permeability will be reached, with the highest agglomeration[2,3]. 2.1 The important influence of permeability The permeability of sintering furnace charging is the volume of air moving per second per square meter of grate area on the updraft sintering bellow, or the speed of air (m/s).
References [1] Wu Min, Xu Chen-hua, Wang Chun-sheng.Synthetical Permeability State Prediction Based on Fuzzy Coefficient-Variable for Lead-Zinc Sintering Process[J].Journal of East China University of Science and Technology (Natural Science Edit ion) 2006,32 (7):825-828 [2] Li Guo,Zhang Guang-Ming,GUI Wei-Hua,et al.An Integrated Intelligent System for Controlling Moisture of Pb-Zn Sinter Mixture Centre on Permeability[J].
Control Theory & Applications. 2008,25(4):688-692 [5] Zhong Hua.Optimal Control for Moisture Content of Materials in Pb-Zn Sintering Process Based on Intelligent Model[J].

Detection of Defects in Layered Concrete Based on Rayleigh Surface Wave Method Xiushu Tian1,2,a,*, Shuai Hou2,b 1School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University ,Beijing 100044, China 2School of Material Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, china atianxiushu@163.com, b970094259@qq.com Keywords: Layered Concret, Rayleigh Surface Wave, Detection.
Acknowledgments This work was financially supported by the National Natural Science Foundation of China (51578349).
[2] Liu H., Deng Z., Han F., et al, Time-frequency analysis of air-coupled GPR data for identification of delamination between pavement layers, Construction & Building Materials. 154 (2017) 1207 - 1215
[4] Zou D, Cui Y, A new approach for field instrumentation in grouted rock bolt monitoring using guided ultrasonic waves, Journal of Applied Geophysics. 75 (2011) 506 - 512
[5] Azari H, Nazarian S, Yuan D, Assessing sensitivity of impact echo and ultrasonic surface wave’s methods for nondestructive evaluation of concrete structures, Construction and Building Materials. 71 (2014) 384 - 391

Friction and Wear Properties of Aluminum Matrix Composites Reinforced by Coated Carbon Fibers Deng Xiaoyan1,a, Zhang Guoheng1,b, Qiang Chengwen2,c, Cairang Zhuoma1,d and Wang Tong1,e 1Key Laboratory for Electronic Materials of the State Ethnic Affairs Commission of PRC, Northwest University for Nationalities, Lanzhou 730030, China 2Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China adengxy@qq.com, b123163154@qq.com, cqiangchw04@gmail.com, d378806006@qq.com, ecsuwt@163.com Keywords: Al-Cu alloy, Aluminum matrix composites, Powder metallurgy (PM), Tribological property Abstract.
Composites Part A: Applied Science and Manufacturing, Vol. 41, 2010, P: 1605-1611 [3] B.
Processing and properties of copper-coated carbon fibre reinforced aluminium alloy composites, Journal of Materials Processing Technology, Vol. 209, 20 09, P: 2104-2110 [4] E.
Materials ＆ Design, Vol. 31, 2010, P: 2381-2386 [5] A.
Effects of some factors on the tribological properties of the short carbon fiber reinforced copper composite, Materials & Design, Vol.25, 2004, 489-493.

Introduction Owing to its high anti-corrosiveness and outstanding resistance to fatigue, CFRP (Carbon Fiber Reinforced Polymer) is today the subject of studies for its use not only as material for the repair and strengthening of degraded structures but also as a material replacing steel reinforcement and tendon.
However, the CFRP member is featured by a low lateral stiffness, which necessitates special anchorage when assessing its material properties or using it as tendon.
However, the ACI [1] recommends to limit the maximum tensile stress of CFRP to 60% of its tensile strength considering the uncertainty related to the FRP material.
Fabrication of Specimens The bond type anchor specimens for the evaluation of the material properties were fabricated in compliance with the method proposed in CSA S806-02 [2].
Keum, A fundamental study on the anchor performance of non-surface treated multi CFRP tendons, World Academy of Science, Engineering and Technology International Journal of Civil Science and Engineering 7(11) (2013), pp. 681-685.