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Engineering factors include: water injection, acid fracturing, stimulation measures, casing material corrosion [7], perforation [8], cementing well quality etc., as shown in fig.4.
With the output of sands, the materials surrounding the casing were scoured, even completely removed.
The Royal Swedish Academy of Sciences. 39(5-6):353–366 (2010)
Quarterly Journal of Engineering Geology 26:109-125 (1993)
Materials Science and Corrosion Protection Naterials.

One approach is to recycle materials used in road construction.
In addition, these excavated pavements can be recycled, saving valuable landfill space needed for unloading materials.
However, by using polymer modification, the bond between materials is significantly increased, resulting in better fatigue performance of rejuvenated RAP materials.
Series: Materials Science and Engineering 660 (2019) 012046 IOP Publishing doi:10.1088/1757-899X/660/1/012046
Fatigue Performance of Recycled Hot Mix Asphalt: A Laboratory Study, Advances in Materials Science and Engineering, vol. 2017

Microstructure and Damping Capacity of AlNp/Mg-Al Composites with Different Particle Contents Yong Wang1,2,a, Kaiming Cheng1,2,b, Jixue Zhou1,2,c*, Yuansheng Yang3,d 1Shandong Key Laboratory for High Strength Lightweight Metallic Materials, Advanced Materials Institute, Shandong Academy of Sciences, Jinan 250014, China; 2Shandong Engineering Research Center for Lightweight Automobiles Magnesium Alloys, Advanced Materials Institute, Shandong Academy of Sciences, Jinan 250014, China; 3Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China awangyong@sdas.org,bchengkm@sdas.org,c,*zhoujx@sdas.org,dysyang@imr.ac.cn Keywords: Powder metallurgy, Magnesium-aluminum matrix composites,Microstructure, Damping mechanism, Damping capacity Abstract.
The other refers to extrinsic damping that is results from the materials response to external condition.
Documentation of damping capacity of metallic,ceramic and metal-matrix composite materials[J].
Journal of Heilongjiang University of Science & Technology 2016; 01: 48-52
Documentation of damping capacity of metallic,ceramic and metal-matrix composite materials[J].Mater.

Materials Science Forum Volumes 255-257, pp.287-289, 1997 doi:10.4028/www.scientific.net/MSF.255-257.287 [10] Handbook of Radiation Chemistry, edited by Y.
Anbar “The Hydrated Electron” Wiley-Inter-science, New York 1970; A.K.
Byakov “Beyond the Point Ps Approximation”, Materials Science Forum Vol. 733, pp 7-14, 2013 doi:10.4028/www.scientific.net/MSF.733.7 [15] S.V.
Journal of Physics: Conference Series 674 (2016) 012018 doi:10.1088/1742-6596/674/1/012018 [16] S.V.
Material Science Forum, v.363-365, pp.392-394, 2001.

This support has characteristics of large load bearing capacity and strong stability, when contractible cushion between stone material sandwiched, it also a certain degree of shrinkage deformation ability.
Zhang: Discussion on the Soft Rock Roadway; Hei Long Jiang Science and Technology Information, Vol. 36 (2010), P.38
Sun: Design and Construction Guide of Soft Rock Roadway Engineering in China Coal Mine (Science Press, China 2004)
Journal of China Coal Society, Vol. 34 (2009) No.3, P.325
[6] Z.J.Du, G.W.Sun: Support Research and Practice of Soft Rock Roadway under High Stress, Journal of Xi'an University of Science and Technology, Vol.60 (2007) No.9, P.256

Modeling and Simulating of PMSM Space Vector PWM Drive System Based on Fuzzy Immune PI Control Method Nan JIANG1,a,*, Jian-Wen FAN2,3,b and Guang-Xing TAN1,c 1 College of Electronical Information and Control Engineering, Guangxi University of Science and Technology, Liuzhou 545006,China 2 College of Automobile and Traffic, Guangxi University of Science and Technology, Liuzhou 545006,China 3 Department of Automotive Engineering Lu Shan Institute of Guangxi University of Science and Technology Liuzhou 545006, China.
Introduction Using the permanent magnate material as a rotor, the PMSM (permanent magnet synchronous motors)possesses enormous advantages such as smaller size, lighter weight, higher efficiency and power density, low noise and the rotor itself does not heat.
Fuzzy Speed Control of PMSM Based on SVPWM Vector Control, Electrical Drives, 9 (2005) 57-61 [3] Peng ZHOU, Study for Fuzzy Immune PID controller, Journal of Yunyang Teachers College, 3 (2011) 82-84 [4] Jian-lin MO, Cheng-gao ZHU, Fuzzy Self-adaption PID Control and Accomplishment, Techniques of Automation and Applications, 3 (1998) 4-8 [5] Yong-le YAN, Qing-zhou LI, Shu-xin YU.
Optimizing Parameters of PID Controller Based on an Immune Networks Model, J of Wuhan Uni of Sci& Tech(Natural Science Edition). 3 (2006)313-315 [11] Sheng-hua NING, guang-xing TAN, Ran LI.
Parameter optimization in purely mechanical steering system of Automotive Based on Immune Genetic PID, Journal of Guangxi University Of Technology. 3 (2010) 38-41

However, both the technologies and the materials for structural health monitoring and diagnose are not fully developed by now [6].
The material properties of the bridge are listed in Table 1, in which E, α, ν,G, ρ and σy are elastic modulus, coefficient of the thermal expansion, Poisson’s ratio, shear modulus, weight per unit volume and yield stress of the materials, respectively.
The equivalent cross sectional properties and material properties of the concrete-filled steel tubes are listed in Table 2.
Ou: Arch bridge suspenders corrosion fatigue life assessment method and its application, in: Journal of Highway and Transportation Research and Development Vol. 8(22)(2005), p.106-109
Chen: The design and application of the composite bridges, Science Press(2002), Beijing, China

They are produced from a variety of carbonaceous source materials.
High-quality activated carbons produced from these materials are capable of adsorbing either from gas or liquid phase.
Precursors used for the production of activated carbons are organic materials that are rich in carbon, such as coal, lignite, and wood.
The purpose of the present paper is the evaluation of the experimental data that were determined for producing porous orange activated carbon with high adsorption capability from orange wastes using zinc chloride as activating agent by one-step carbonization method, at a low cost. 2 Materials and methods 2.1 Materials Orange wastes were collected from the orange juice industry Three Gorges Fruit Industry Group.
Biochemical Engineering Journal Vol. 31, (2006), P. 160 [5] A.E.

The material being heated is divided into two-part when the materials are pumped by the feeding pump.
One part material is mixed with the other after that it enters heat exchanger and exchange heat with the hot materials, then enters the convection section of the heating furnace.
The being heated material entering heat exchanger flows in the pipe.
On one hand, the being heated material plays fine adjustment role on the final product temperature (decrease temperature), on the other hand, the being heated material also can be preheating.
Su,Energy Saving Technology for Tnbular-Furnace through Swirl Floe Field Combusion, Journal of HuZhong University of Science and Technology,HuBei:3rd ed., vol( 33). 2005 [3] S.

The EFMF uses magnetite or light-burned magnesia as raw materials.
The raw materials absorb enough heat released mainly from arc and be melted.
According to the different among melting points of ingredients of the raw materials, the impurities will be melted firstly and MgO can be purified.
This approach has been successfully applied to a refractory materials producing plant in china.
Journal of Chemical Industry and Engineering, Vol. 59 (2008)p. 1686-1690 [12] M.