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Online since: July 2012
Authors: Jin Sheng Zhao, Zi Qiang Xu, Li Na Shen
Experiment material and instrument Experiment material:oily sludge, coming from Xianhe oil plant of Shengli Oilfield;Cement belong to class G Oilwell Cement produced from cement plant of Shengli Oil Field.
Acknowledgement The financial support received from Natural Science Foundation of China (50876115) and National S&T Major Project (2008ZX05009-004) is highly appreciated.
Journal of Material Cycles and Waste Management, 2008,10(1)
Online since: December 2012
Authors: Yang Yang Xi, Yu Feng Yang
The drawbacks of SMES are that expensive refrigeration units, high power cost to maintain operating temperatures and the superconductor material properties.
The raw materials of hydrogen that water does not exists the problem of exhaustion.
Journal of Electric power science and technology, Vol. 23(1) (2008), p.13-17 [13]Jinyong Lei, Jun Xie, Deqiang Gan.
Online since: January 2010
Authors: Fernando R. Oliveira, Noemi Carneiro, J.H.O. Nascimento, António Pedro Souto
Experimental Material.
Including a plasma treatment in the processing of the substrate, dyeing properties obtained by using direct dyes are improved, namely yield, dyebath exhaustion and washing fastness, providing an alternative cheap, clean and high quality option for the dyeing of polyamide materials.
Zimmermann, in Encyclopedia of Polymer Science and Engineering, Vol. 11, J Wiley, New York, (1988), p. 315
Magalhães: Journal of Society of Dyers and Colouristics, Vol.117 (2001) p. 298.
Online since: April 2014
Authors: Abdelghani Boucheham, Djoudi Bouhafs, Nabil Khelifati, Baya Palahouane
The concentration of impurities in the base material (feedstock) and equipment drawing ingots (crucibles, coating crucibles ...) is a source of silicon contamination by metalic elements [1].
This decrease can be explained by the trapping phenomena present in the material, at low injection levels (∆n<4 E +14 cm-3) [6].
To recall the internal gettering is not to extract metallic impurities outside platelets but it is just change the configuration of these impurities by keeping them inside the material, so it is the state which metal impurities exist in multicrystalline silicon wafers that affects the electrical properties and it is not only the global concentration.
Bessais, World Journal of Condensed Matter Physics, 2, 165-170, (2012)
Austad, mémoire de master, université norvégienne des sciences et technologie, Norvège, (2011).
Online since: July 2011
Authors: Bo Wang, Shen Dong, Yan Fu Zhang
Atmospheric pressure plasma machining is a pure chemical etching process, there is no damage layer on the optical surface and it is lower cost, more time saved and more material removal rate than vacuum plasma etching.
Acknowledgements This project is supported by the National Natural Science Foundation of China (key projects 50535020 and 50759055).
Roman Hachkowski, Andrew Nelson, and Kai Xin, MRF Applications: On the Road to Making Large-Aperture Ultraviolet Laser Resistant Continuous Phase Plates for High-Power Lasers, Proc. of SPIE, 6403 64030N (2007) [3] Kazuya Yamamura, Yasuhisa Sano, Masafuni Shibahara, Kazuto Yamauchi, Hidekazu Mimura, Katsuyoshi Endo, and Yuzo Mori, Ultraprecision Machining Utilizing Numerically Controlled Scanning of Localized Atmospheric Pressure Plasma, Japanese Journal of Applied Physics, 45, 10B (2006) [4] P.K.
Salij, Simultaneous figuring and damage mitigation of optical surfaces, Proc of SIPE, 7132, 71321R-1(2008) [5] Bo Wang, Jufan Zhang, Shen Dong, New Development of Atmospheric Pressure Plasma Polishing, Chinese Optical Letters, 7, 6(2009) [6] Zhang Jufan, Wang Bo, Dong Shen, The Design of an atmospheric Pressure plasma jet generator Used for Polishing Ultra-Smooth Surfaces, Key Materials, 364-366 (2007)
Online since: November 2010
Authors: Gang Yang, Chun Fu Jin, Peng Niu, Yi Xiong Wu
Its ultimate state of bearing capacity is usually determined by the loss of overall stability of the member, and it gives mainly the elastic-plastic buckling on the plastic material.
Vol.65 (2009), P.737 [3] Liu Jie, Sun Sheng, Guan Yanjin: Materials Processing Technology, Vol.209 (2009), P.1580 [4] Chen Ji: Stability of Steel Structures Theory and Design, Science Press (2003) [5] Zhou Liyun,Guo Jiangang, Cao Tianjie: Journal of Taiyuan University of Technology, Vol.5 (2002), P.561 [6] Yang Gang Wang Haibin, Zhang Aifeng: Analytical Engineering Mechanics ,Vol.5 (2007), P.53 [7] Niu Peng,,Yang Gang,GongBenqi, Jin Chunfu: Key Engineering Matarials ,Vol.417-418 (2010) , P.857
Online since: August 2010
Authors: Jun Guang Wang, Bing Liang
Table 1 Physical and mechanical properties of rock rock Uniaxial compressive strength sσ /MPa The amount of elastic touch E/MPa Poisson ratioµ Density γ/ g·cm-3 Oil shale 2.68 404.6 0.39 1.52 foundation item:national natural science foundation(50974070) About the author: wang junguang (1980-),male,born in Fuxin,Liaoning,Liaoning Technical university, doctoral students in reading.
From the creep curves we can also find that when stress difference 31 σσ − remains the same, the confining pressure increases, creep decreases, increasing the life span of the specimen, the creep damage is also a slight increase in the time, indicating the material ductility increases. 2 The establishment of oil shale creep damage model Through testing, oil shale creep is nonlinear and exsists creep flowing in the stage of accelerating creep causing the inner ofrock generating new cracks and in the ever-expanding and resulting in rock strength below its long-term strength because of excessive distortion caused by rock rheology.
When materialω= 0, no damage, when ω= 1, material is fully compromised.
2 1 1 2 1 1 2 2 1 2 2 1 2 [1 ( ) ( ) ] [ ( / ) ] D D D G D G G G G G η η η ηη τ η ηη γ + + + + = + (1) Where: 21,ηη - model Viscosity parameter ; 21,GG -model Shear modulus; D-On time t constant differential operators; τ - Shear stress; γ- Shear strain; Replace τ in (1) with a valid stress *τ , getting the constitutive equation : 2 2 1 2 1 1 2 1 1 2 2 1 2 2 1 2 [1 ( ) ( ) ][ /(1 ) [ ( / ) ] p D D D G D G G G G G η η η ηη τ ω η ηη γ + + + + − = + (2) From flexible solutions in Elasticity: 2 2 0 2 2 02 0 [1 ( / )] [1 ( / )] r r p R r p R r Rp u G r θσ σ   = +  = −   =  (3) where: ru -radial displacement; 0R -Round roadway RADIUS; r -Any point in the rock to circular roadway centroid distance; G -Shear modulus of elasticity; On (3) using the correspondence theory : 2 0( ) 2 ( ) r pR u s G s r = (4) According to Burgers model material
Creep theory of soft rock and its engineering application[J].Chinese Journal of Rock Mechancs and Engineering,2004. 23(10): 1635 -1639
Online since: April 2012
Authors: Yu Yue Chen, Yong Mei Chu
Study on Modification of Raw Bamboo Fabric and Dyeing Properties Yong-Mei Chu1,a, Yu-Yue Chen2,b 1Yangzhou Polytechnic College, Yangzhou 225009, China 2School of Material Engineering, Suzhou University, Suzhou 215021,China achuyongmei@sina.com byychen@sina.com Keywords: raw bamboo fabric; sericin; modification; dyeing properties; oxidation Abstract.
Experimental materials, medicines, instruments 1) Fabric and Pharmacy: the bamboo fabric after scouring and bleaching, specifications for the 27.8 tex × 27.8 tex, 236 pieces / 10 cm × 220 pieces / 10 cm of the plain (Zhuzhou Ramie Textile Mill).
Huzhou, Zhejiang); Sodium, Glycerol, were AR grade. 2) Dyes: Spinning - reactive dyes (Reactive Violet A-5RV, Reactive Red A-EF, Reactive Yellow A-4GLN, Reactive Dark Blue A-2GLN, Reactive Turquoise Blue A-6GLN, Shanghai Textile Science Co., Ltd.). 3) Instruments: constant temperature dyeing small prototype, 722-type spectrophotometer, Datacolor100 computer color measurement instrument, LFY-304 fabric color fastness to crocking test instrument; SW-12A washing color fastness tester; Ultrascan XE color measurement instrument.  2.
Journal of Textile, 2008, 29(10):70-73
Online since: March 2007
Authors: Akbar Shojaei, A. Spah
The scope of the present study is to reveal the processing and material parameters in which the RI/CM process shows great benefits with respect to RTM in terms of mold filling time and pressure distribution.
Chiu: Journal of Composite Materials 29 (1995), p.2180
Maekawa: Polymer Engineering and Science 36 (1996), p.953
Online since: May 2011
Authors: Xu Wei, Guang Zhu Zhou, Chen Yu
Materials’ parameters Different clays’ parameters are shown in Table.1 Table 1.
But the maximum stress value is less than the theoretic limit of reinforced concrete property, it’s obvious that material property hasn’t been made full use of .Because the von Mises of front wall is larger than of back wall, we think that it is reasonable to give the front wall a larger thickness.
Acknowledgements This project is supported by the Fund of the Shanghai Committee of Science and Technology, China.
Vol. 11 (2004), p. 88 (in Chinese) [3] Guiping Wang, Huamei Li, Yongcheng Fei and Hongqiong Zhao: Chinese Journal Underground Space and Engineering.
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