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Journal of Central South University (Science and Technology). 51 (2020) 912-921
Functional materials. 54 (2023) 7193-7199+7220
China Safety Science Journal. 28 (2018) 40-45 [32] Zhang P, Gan S, Chen L, et al.
Journal of Renewable Materials. 10 (2022) 2937-2947
Polymer Materials Science And Engineering. 35 (2019) 123-130

Based on the principle of participates voluntarily，equality and mutual benefit, enhances strong points and avoids weaknesses, Division of labor and cooperation, communal development, Beijing Industrial universities and Beijing Building materials Machine shop Composed a semi-close type commonwealth which combined with teaching, research and production-Jingye Building Materials Machinery Technology and Equipment Development Integrated Co.
Chen：Journal of Guangxi Normal university (1996) No.1, p.67-72
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Test materials and methods Soil sample.
The upper slope is a gently climb with strong ability to hold up leaves and other organic materials, thus the content of organic matter is high.
Resources Science; 2004, 26, p. 61–66
Resources Science; 2004, 26 p. 61–65
[15] Chen RH, Zhan LT, Chen YM, Hu HZ, Contents of nitrogen, phosphorus and organic materials in sediments and theirs distribution along depth at Xixi Wetland, China Environmental Science; 2010,30(4) p. 493-498.

The presence of hydrogen atom raises the carrier mobility, but a-Si:H film still shows very high resistivity (109Ω•cm) comparing with other materials.
[3] Liu X M, Fang H J and Liu L T 2007 Microelectronics Journal 38(6-7) 735-39
[6] Jackson W B 1996 Current Opinion in Solid State & Materials Science 1(4) 562-66
[8] He J, Li W, Xu R, Qi K C and Jiang Y D 2013 Science China Technological Sciences 56(1) 103-8
[9] Moreno M, Torres A, Ambrosio R, Rosales P, Heredia A, Kosarev A, et al. 2012 Journal of Non-Crystalline Solids 358(17) 2336-39 [10] Iborra E, Clement M, Herrero L V and Sangrador J 2002 Journal of Microelectromechanical Systems 11(4) 322-29

The materials have the characteristics: 1.1 Good freeze-thaw resistance.
The materials with good fluidity should be selected, it can completely fill the bottom of void area, so as to solve the problems of slab bottom void. 1.4 Less shrinkage.
Because of using large quantity of water in the ratio design of grouting materials, in order to ensure the fluidity of grouting material, the measure will lead to the segregation and bleeding of grouting mixture, and reduce the performance of grouting reinforcement layer itself, also reduce the water stability of base materials, be easy the slab bottom void to appear.
The grouting material ratio is in accordance with the laboratory test results, and mixing with water to form grouting materials. pumping grouting materials into holes on the concrete pavement slab, the controlling pressure is about 2MPa, the adjacent grouting holes overflowing to maintain about 1min, filling grouting hole, after grouting is finished, the vehicular traffic is strictly prohibited, the demanded strength reached about 24~72h, the Benkelman Beam deflection method is used to measure construction quality of grouting slab, when the measured results more than 0.2mm, the slab grouting should repeat until meeting the requirements to open to traffic.
Reference [1] Zhouhongxia, Application Study on Rehabbing Old Cement Concrete Pavement with Asphalt Overlay, A Thesis for the Degree of Master of Engineering, Huazhong University of Science & Technology,2005.4 [2] Zhangyuhong, Application On Rubblization Of Old Portland Cement Concrete Pavement A Dissertation Submitted to For the Academic Degree of Doctor of Science, Southeast University, 2006.4 [3] LUO Ming-hai, Strengthening and repair for hollow bottoms of cement concrete pavement plates with grouting method, Journal of Fujian Agriculture and Forestry University (Natural Science Edition) ,2003.9 [4] Wanjie, Study on Testing and Preventive Technology of Void beneath Cement Concrete Pavement A Dissertation submitted for the Degree of Master, Chang`an University, Xi.an, China, 2007.6 [5] HUANG Likui, ZHANG Xuequn, Study on Grouting Techology under Old Cement concrete Road Slab, Central SouthHighway Engineering, Vol.30, No.4 Dec. ,2005 [6] Chenshuanfa, Yangbin, Maqinglei, Zhangzhenchun

After the review process, 140 papers have been accepted for publication in this special issue of Materials Science Forum.
This strong participation is indicative of the growing interest of the scientific community for this fascinating field of materials science.
He received his PhD in Applied Physics from Caltech in 1974 and he is currently Mettler Professor of Materials Science, Engineering and Applied Science at the same Institute.
He is Associate Editor of the Journal of Applied Physics and Applied Physics Letters.
He received a Diploma in Materials Science from the University of Erlangen-Ntirnberg in 1986 and a PhD from the same University in 1990 while he was investigating the formation of amorphous and quasicrystalline alloys by interdiffusion in collaboration with the Siemens Research Laboratories.

Introduction Bridge crane is important handling equipment in material production and circulation of for its high efficiency and safety, and be widely used in departments of national economy [1-2].
The traditional design of crane girder usually has an over high safety factor to ensure the safety and reliability for the limitation of analysis method, which lead to many waste of the materials.
The material of girder is Q345, and the safety factor is n=1.4, and the allowable stress is [σ] =246 MPa.
For same materials of the girder, its weight is only connected with the total volume.
Wuhan: Wuhan University of Technology, 2006(in Chinese) [3] BAN GF and SUN SH: Journal of Shenyang Polytechnic University Vol. 6 (2000), p. 462 [4] SU WL and XU CS: Journal of Wuhan University of Technology (Transportation Science & Engineering) Vol. 4 (2006), p. 619 [5] Ayoub A: JOURNAL OF BRIDGE ENGINEERING Vol. 16 (2011), p. 479 [6] Wei CL, Lei X and Wang GH: Advanced Materials Research Vol. 163-167 (2011), p. 3668 [7] Bechtel A and McConnell J: JOURNAL OF BRIDGE ENGINEERING Vol. 2 (2011), p. 197 [8] Wang ZC and Ren WX: INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS Vol. 2 (2011), p. 379 [9] Ze XB, Sun YW, Yang XF and Zhao F, in: International Conference on Measuring Technology and Mechatronics Automation, edited by IEEE COMPUTER SOC, Zhangjiajie, China (2009).

Acknowledgements This work was supported by National Science and Technology Major Project (2011ZX06004-009), Key Program of National Natural Science Foundation of China (51034011), Shanghai Pujiang Program，and ITER-National Magnetic Confinement Fusion Program (2011GB113001).
Bhanu Sankara Rao: Materials Science and Technology.
Xing: Journal of Nuclear Materials.
[5] Dunji Yu, Xu Chen and Weiwei Yu: International Journal of Plasticity.
Wadekar: Materials Science and Engineering A.

Study on Deoxidization of Coal-bed Methane under Low Temperature Ruijun Jing1, a, Yongfa Zhang1, b,*, Ying Wang1, c, Xianglan Li1, d 1Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan, CHINA 2College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan , CHINA ajingruijun@126.com, byongfaz@tyut.edu.cn, c89280558@qq.com, d1727817437@qq.com Keywords: coal-bed methane; deoxidization; low temperature Abstract.
Dürr, et al: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 595(2008), p. 187-189. -[2] Jian Yun, Fengyin Xu, Lin Liu, et al: International Journal of Mining Science and Technology.
[7] Xiong Yang, Yingshu Liu, Yongling Li, et al: Journal of China Coal Society.
Raw material gas is composed of methane and compressed air.
As the airspeed increasing, the material gas do not contact with deoxidizer sufficiently.

Quantum Chemistry Theoretical Studies on Molecular Structures of Polybutadiene Ming ZHANG1,a，Zhixiong HUANG 1,b，and Minxian SHI 1,c 1 School of Materials Science and Engineering, Wuhan University of Technology, Luoshi Road, Wuhan 430070, P.R.China a mz12095@126.com, bzhixiongh@whut.edu.cn Keywords: polybutadiene ; isomers ; Density Function Theory Abstract: The Density Function Theory (DFT) method are employed to study the geometries of the polybutadiene （C4H6）n（n=3，4，5）on the base of B3LYP/6-311+G in the paper. the polybutadiene have five isomers, including Cis-1，4-polybutadiene, Trans-1, 4-polybutadiene, Isotactic1, 2-polybutadiene, Syndiotactic1，2-polybutadiene, Atactic1, 2-polybutadiene.
Polymeric Materials Science and Engineering, 1999，15（3）： 99-101 [5]LU Jun, HU Yanming.
Journal of Northeastern University(Natural Science), 2007，28（6）：909-912 [6] Chen Y，Yang D C，Hu Y M，etal.
Chinese Journal of Applied Chemistry, 2008，25（10）：1233-1236