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The material is elastic and isotropic; The cross section of arch crown in vertical and in horizontal arch ring still be plane after deformation; The shape of gully is approximately symmetric, the geological condition were better on both sides; The deformation of foundation is small.
Fig 5 Simplified calculation sketch of cantilever Fig 6 Calculation sketch of superposition method According to the superposition principle and variable rigidities segmentation calculating method in material mechanics regard every section as a one end fixed beam, then stack every section together to conform the whole beam[5].
Acknowledgements This work was financially supported by the Gansu Natural Science Foundation (1107RJYA276), Lan Zhou University of Technology Doctor Foundation (No: 04-0335).
Journal of Natural Disasters.2006,15(2):20-24.)
Debris Flow Prevention Guide[M].Beijing: Science Press,1991(in Chinese)

(3) Through research on domestic differential related materials, this paper uses simplified model: ω3 /ω4=Rin/Rout .
Acknowledgements This research is supported by Key Project in China National Science & Technology Pillar Program during the Twelfth Five-year Plan (2011BAD20B04) and ( 2012BAF07B01).
System Design of Model Vehicle (2010) [3] Kimitaka Nakamura: Development of a motor-assisted 4WD system for small front-wheel-drive vehicles in JSAE Review, Volume 24, Issue 4, (October 2003), P. 417–424 [4]Liu Shuai,Zu Jing and Zhang Hong-yan: Design of control system of stepper moter based on microcontroller in Eiectronic Design Engineering,Vol.18,No.4 (2010) [5] Zhuang Huan-wei and Su Hong-ying: A multi-stepper motors control system based on MCU in Modern Manufacturing Engineering,Vol.11 (2008) [6] Zhou Yong, Li Sheng-jin, Tian Hai-bo, Fang Zong-de and Zhou Qi-xun: Control method of electronic differential of EV with four in-wheel motors in ELECTRIC MACHINES AND CONTROL,Vol.11,No.5 (2007) [7]Zhai Li,Dong Shou-quan and Luo kai-yu: Electronic Differential Speed Control for In-Wheel motors Independent Drive Vehicle in transitions of Beijing Institute of Technology,Vol.30,No.8 (2010) [8]Ge Ying-hui and Ni Guang-zheng: Novel electric differential control scheme for electric vehicles in Journal
of Zhejiang University(Engineering Science),Vol.39, No.12 (2005) [9]Ding Neng-gen,Li Dan-hua,Xu Jing,Wang Jian and Yu Gui-zhen: Estimation of Vehicle Sideslip Angle Based on Local Linearization in Transactions of the Chinese Society of Agricultural Machinery,Vol.43,No.1 (2012)

Study of Microorganism Trench-Leaching of a Chinese High Fluorine-Bearing Uranium Ore Xiaolan Mo1, a, Jiankang Wen1, b,Chengyan Xu2, c, Biao Wu1, d, Bowei Chen 1, e, He Shang 1,f 1National Engineering Laboratory of Biohydrometallurgy, General Research Institute for Nonferrous Metals, Beijing 100088, China 2School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China a*correspondence:mxl0545@163.com;bkang3412@126.com;cchengyan12325@163.com; dangelwbiao@sina.com; ebiohydrometallurgy@163.com; fshanghe123321@163.com Keywords:uranium; fluorine toxicity; bioleaching; bacteria; trench-leaching Abstract.
Acknowledgments This project was financially supported by the National Natural Science Foundation of China(No.51404031) and the National High Technology Research and Development Program of China (No.2012AA061501).
Advanced Materials Research.(2009) Vol.71-73,p.311-317
Gao.Chinese Journal of Rare Metals.(2015) Vol.39,p.75 [7] A.

Research on GIS-based groundwater pollution vulnerability assessment in Chengting new district, China Liping Bai1, a, Bin Gong1,b,*, Xiaoli Gan2, Yun Luo1 1Chinese Research Academy of Environmental Sciences, Beijing 100012, China 2China University of Geosciences, Beijing 100083, China abcrlp@163.com, bcraeseco@126.com Keywords: groundwater pollution, groundwater vulnerability assessment, GIS Abstract: Groundwater is an important component of water resources.
The relevant measures and policies can be formulated to ensure that the limited manpower and materials can be invested in the regions with high level of pollution.
Earth Science Frontiers. 2005, 12(Suppl):3-11
Journal of Environmental Management, 2008, 88(4): 577-593

Microstructures of rapidly solidified hypereutectic Al-Si alloy with low-titanium content Aiqin WANG1,2,a ,Jingpei XIE2 ,Zhongxia LIU 1 ,Jiwen LI2 ,Wenyan WANG 2 ,Shuqing YAN 1 1 The Key Laboratory of Material physics of Ministry of Education, Zhengzhou University, Zhengzhou 450052, China 2The School of Mater.
Henan University of Science and Technology, Luoyang 471003, China aemail: aiqin_wang888@163.com Key words: rapid solidification, microstructure, micro-nanocrystalline grain, amorphous, polycrystal Abstract: In the present work, rapidly solidified alloys strips with Al-0.24Ti and Al-21Si-0.24Ti(in wt.%) were prepared by single roller melt-spinning method.
Mellor: International Journal of Fatigue Vol. 27 (2005),P. 1564 [6] Zhao Aimin, Mao Weimin, Zhen Zisheng: Chin.
Vol. 10 (2000),P. 815 [13] Zhang Chuanjiang,Wu Youshi,Dong Shouyi:Acta physica sin.Vol. 51 (2002), P. 2575 [14] Chen Guang,Fu Hengzhi: New metallic material in non-equilibrium solidification(Science Press,China 2004)

Surip6 1,2,3,4Department of Manufacturing and Materials Engineering, Faculty of Engineering, International Islamic University Malaysia, Jalan Gombak, 53100 Kuala Lumpur, Malaysia. 5,6Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 S.
Corrosion Protection with Polyaniline and Polypyrole as Anticorrosive Additives for Epoxy Paint, Corrosion Science. 50, (2011) 721-728
Corrosion Resistant Sol-Gel ZrO2 on Stainless Steel, Journal of Non-Crystalline Solids. 147 (2009) 236-241

Materials and Methods A.Bacteria strain and media The Lactobacillus rhamnosus NCU 239 Strain uesd in our experiments was stocked by state key laboratory of food science and technology, Nanchang university.The medium for inoculum preparation and fermentation contained the following(in g.L-1): 20 glucose, 10 peptone, 10 beef extract, 5 yeast extract, 5 sodium acetate, 2 diammonium hydrogen cirate, 2 KH2PO4, 0.25 MnSO4._7H2O, 0.58 MgSO4._7H2O, 1ml tween 80.
Beijing: Science Press. 1995: 797-810
Food Science and Technology ,2005(9): 94-98
Science and Technology, 2009, 25(2):82-96
Journal of dairy science, 2005, 4: 1352-1357

The mixing process of both materials is better in this case.
TMS (The Minerals, Metals & Materials Society), (2007), pag. 73-81
Baumann3 (1Mechanical and Aerospace Engineering, University of Missouri-Rolla, Rolla, MO, USA; 2Center for Friction Stir Processing, Materials Science and Engineering, University of Missouri-Rolla, Rolla, MO, USA; 3The Boeing Company, St.
TMS (The Minerals, Metals & Materials Society), (2007), pag. 113-125
TMS (The Minerals, Metals & Materials Society), (2007), pag. 285-293

It is also important for materials processing and crystal growth, particularly because convection affects the material microstructure as well as the physical properties of the material.
Channapattanac, Natural convection heat transfer inside trapezoidal enclosure using Cu-water nanofluid with heat source at various positions, Al-Nahrain Journal for Engineering Sciences 26 (2023) 175–185
Farsi, Numerical simulation of heat transfer and entropy generation in a trapezoidal enclosure with sinusoidal temperature wall using nanofluid, Applications in Engineering Science 19 (2024) 100186
Faisal, Numerical simulation of natural convection in a trapezoidal enclosure with inner rotating cylinder and magnetic field, Scientific Review Engineering and Environmental Sciences 32 (2023) 135–154
Faisel, Numerical analysis of natural convection heat transfer in a trapezoidal enclosure using water-based nanofluid, International Journal of Heat and Technology 38 (2020) 925–932

Carbon aerogels are also good materials to be used as electrode for supercapacitors, however they involve hazardous materials during synthesis as well as expensive for practical application [20].
Experimental Materials.
Frackowiak, Supercapacitors: Materials, Systems and Applications, John Wiley and Sons, 2013
Zhang, A review of electrode materials for electrochemical supercapacitors, Chem.
Electrochemical performance of asymmetric supercapacitor based on Co3O4/AC materials, Electroanal.