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Wen: Dynamics and experiments of fault rotors (Science Press, China, 2004)
Zhang: Journal of Sound and Vibration, Vol. 210 (1998), pp.350
Dong: Journal of Mechanical Sciences, (2005), pp.1542
Zhang: Journal of Sound and Vibration, Vol. 251 (2002), pp.807
Zhang: Journal of Sound and Vibration, Vol. 283, (2005), pp.621.

Acknowledgements The work was supported by the National Natural Science Foundation of China (No.51175187), the Science & Technology Foundation of Guangdong Province (No.2012B030900034), and the Science & Technology Foundation of Dongguan City (No. 2012108102010).
Zhou: International Journal of Computer Integrated Manufacturing Vol. 22(2009), No.2, p.100-111 [5] J.
Zhou, et al: International Journal of Advanced Manufacturing Technology Vol. 41(2009), p.1034-1042 [7] H.
Su, et al: International Journal of Advanced Manufacturing Technology Vol. 51(2010), p.817-827 [8] F.
Zhou, et al: International Journal of Advanced Manufacturing Technology Vol. 43(2009), p.379-399

Various reflection characteristics of material surface to laser has resulted to holes in the area which can not be resampled.
Journal of System Simulation, Vol.7 (2007) [3]Xu Zhiqin, Yan Ming, et.al.
Journal of Tianjin University (Science and Technology), Vol. 34 (3) ,(2001), p. 404-407 [4] Liu Chun, Yang Wei.
Hubei Agricultural Sciences, Vol. 47(1), (2008), p.104-106 [7] Lu Jixiang, Li Dehua.
Journal of Wuhan University of Technology, Vol. 26(5) , (2004), p. 84-86 [8] Wu Weidong, Liu Defang.

Conclusions The initial defect of drill string was simplified as circumferential semi-elliptical surface crack, and 30CrMo were chosen as material whose constitutional relation was fitted by experiment as Ramberg-Osgood equation.
Acknowledgments This work is supported by National Natural Science Foundation of China (11102173, 51134004) and Key Laboratory of Oil and Gas Equipment from Ministry of Education.
Zhang et al, Comparative study on dynamics behaviors of the full drillstring between gas drilling and mud drilling, Journal of Southwest Petroleum University (Science & Technology Edition). 33 (2011) 139-143
Saxena, J-integral expressions for semi-elliptical cracks in round bars, International Journal of Fatigue. 29 (2007) 822–828
Handbook of the stress intensity factor (Revised edition), Science Press, Beijing,1993.

The flood and ebb current in this area are relatively strong, and the bed material is mainly composed by fine sand and clay.
Acknowledgement This work was financially supported by Science Fund of National Research Institutes of China which provided financial support, under contract TKS120203, TKS120103.
References [1]Zuo Xue:Coastal Engineering.vol.3(2005), p.4 [2]Xuechang Wang,Changqing Sun: Marine Environmental Science. vol.19 (2000), p.55 [3] Huapeng Qin,Jinren Ni and Lin Liang:Journal of Hydrodynamics (A Series).vol.17 (2002), p.92 [4] Huapeng Qin,Jinren Ni and Yitian Li:Journal of Sediment Research. vol.(10)2002,p.92 [5]Guosheng Li,Hailong Wang:Journal of Geographical Science.vol.60 (2005), p.707 [6]Blumberg A F,in:A estuarine and coastal ocean version of POM, chapter,3, 1996 [7]Van Rijn:Journal of Hydrodynamic Engineering. vol.110(1984) ,pp.1613

Materials Model Modeling the material is very important for the whole FE simulation.
Fig.4 illustrates the milling process of cement concrete, and the nephogram is the Mises equivalent stress, reaches 1.35MPa in the concrete materials.
From Fig.5, we can find that the stress in the contact element is instantaneous and pulsant, and maximal stress reaches 1.1MPa and does not exceed the materials’ strength.
[4] Jinyue Tian and Huarong Xiang: Journal of Jiangsu University, Vol.25(2004),No.5,pp.380-384
[5] Manhua Qin, Helai Yang and Man Xue:Journal of Tianjin Institute of Urban Construction, Vol.6(2000),No.2,pp.122-125

Among those feasible reuse technologies, most utilize sludge incineration residue as a recycled material since it is rich in silicon oxide and aluminum oxide[2].
Many recycled materials, which have similar com positions as residue has, such as fly ash, electric furnace residue, have been found to have the capability of adsorbing or removing heavy metals ions [3].
Materials and Methods Samples and Equipments Sludge samples were collected from a wastewater treatment plant and a paper mill plant in Guangzhou, China.
Hanafiah: Bioresource Technology,Vol.99 (2008),p.3935 [6] Belgin Bayat: Journal of Hazardous Materials,Vol.B95 (2002),p.251 [7] I.J.
H.Woo, Jong M: Journal of Hazardous Materials,Vol.164 (2009),p.1130 [9] Y.S.Shim, Y.K.

Ablation Properties of C/C-ZrC-SiC Composites Mengjiao Gao1, a, Lai Chen1,b, Yongsheng Hua1,c,Musu Ren1,d,Jinliang Sun1,e 1 School of Material Science and Engineering, Shanghai University, Shanghai 200072, China agaomj@shu.edu.cn, bclai@shu.edu.cn, chys@shu.edu.cn, dmsren@shu.edu.cn, ejlsun@mail.shu.edu.cn Keywords: C/C-ZrC-SiC composite, precursor infiltration and pyrolysis, ablation, anti-oxidation Abstract: The ablation properties of C/C-ZrC-SiC composites prepared by precursor infiltration and pyrolysis processes were studied by the H2-O2 ablation method.
Because of these characteristics, the C/C composite was used successfully as the thermal structure materials in aerospace indurstry[1].
ZrO2 is a typical thermal barrier material which can effectively prevent external heat diffusing inward [5], so the high temperature zone was limited to the surface.
Srinivasan: Journal of Materials Engineering and Performance, Vol.12( 2003), p.354 [2] Strife J R., Sheehan J E.
:Ceram Bull,Vol.67(1988), p.369 [3] Qingfeng Tong, Jingli Shi, Yongzhong Song, Quangui Guo and Lang Liu: Carbon, Vol.42(2004), p.2495 [4] Wang C R,Yang J M,HoffmanW: MaterialsChemistry and Physics, Vol.74(2002), p. 272 [5] Penvecost J L.High Temperature Inorganic coatings[M].New York:Reinhold Publishing Corp,1963:10 [6] Shi Wu , Lai Chen, Lin Qian, Jiabao Zhang,Jianfeng Pan, Chunjie Zhou, Musu Ren, Jinliang Sun: Journal of Chinese Ceramic society (in Chinese), Vol.36 (2008), p.973 [7] Guiming Song, Yujin Wang, Yu Zhou, Yingkui Guo, Guangwu Wen: Rare Metal Materials and Engineering (in Chinese), Vol. 30(2001), P.101

Moreover, cobalt ferrite demonstrates marked antibacterial activity in relatively small quantities with the result that the nanopowder is considered as a novel antibacterial material.
The morphology, homogeneity and particle size of the materials was observed using a field emission scanning electron microscope (ZEISS SUPRA 40 VP SEM).
The bacteriological test series were carried out according to ASTM E2180-07: ‘Standard Test Method for Determining the Activity of Incorporated Antimicrobial Agent(s) in Polymeric or Hydrophilic Materials’.
Journal of Magnetism and Magnetic Materials, 1998. 183(1–2): p. 163-172
Journal of Magnetism and Magnetic Materials, 2009. 321(9): p. 1251-1255.

Injection molding differs from compression molding mainly in different remolding of the material.
Both the groups of the samples were made in comparable process conditions (Tab. 2) from one material batch.
However, in case of compression molding, the material is exposed to much lower shearing deformation and in a short multi-directional flow.
Journal of Applied Polymer Science, 123 (3) (2012) 1437-1454
Journal of Materials Research 19 (1) (2004) 1564-1583