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Machining of brittle materials, the chip is broken granular, because the chip's broken and leaving many pitting on machining surface, make the rough surface. 2.2 surface residual stress The causes of surface residual stress.
Journal of car use, 2008, (1)
Journal of equipment manufacturing technology, 2009, (6)
[4] the mining-team her honey haired, the influence factors of machining surface quality and its countermeasures [J], China science and technology review, 2009, (21)
Journal of hebei metallurgy, 2006, (4)

The finite element method has been widely applied to simulate the plastic flow of part materials during the forming process.
The blank material is low carbon steel.
Y201327321) and the innovation program of science and technology of Zhejiang Province, PR China (Grant No. 2013R422006).
References [1] Cheng Sun, Shi-Hong Zhang, Wei Dong Tang and Zhong-Tang Wang: Materials and Manufacture Processes Vol.25(2010), P. 534 [2] Lu Xianfeng, Zhang Ruhua and Min Shuigen: Chinese Journal of Mechanical Engineering Vol.43(2007), P.184 [3] Ulysse P, and Johnson RE: Int.
Vol.41(1999), P.1067 [4] Zhang Shihong, Zhou Lixin and Wang Zhongtang: Journal of Plasticity Engineering Vol. 15(2008), P.31-36 [5] Hua Lin, Liu Shenglin and Xu Hao, Journal of Plasticity Engineering Vol. 15(2008), P.46 [6] Yang J.

The low degradation efficiencies in single and codoped TiO2 can be best explained by looking into the formation of crystal phases structures for both bare and metal-modified TiO2 materials.
Li, Synthesis and characterization of copper ions surface-doped titanium dioxide nanotubes, Materials Research Bulletin. 43 (2008) 1971–1981
Mohamed, An overview on the photocatalytic activity of nano-doped-TiO2 in the degradation of organic pollutant, Materials Science. 2011 (2011) 1-18
Bahnemann, Tailored titanium dioxide nanomaterials: anatase nanoparticles and brookite nanorods as highly active photocatalyst, Chemistry of Materials. 22 (2010) 2050-2060
Restrepo, Study of the bandgap of synthesized titanium dioxide nanoparticules using the sol-gel method and a hydrothermal treatment, The Open Materials Science Journal. 4 (2010) 9-14

Material and Experiment Material.The magnesia used in preparation of magnesium oxychloride cement was provided by two methods.
Table1 Mortar strength test of various materials Dosage of calcium added slag (%) Magnesia（g） Fly ash（g） Sand（g） MgCl2 solution（ml） 0 540 0 1350 300 5 513 27 1350 300 10 486 54 1350 300 20 432 108 1350 300 30 378 162 1350 300 Results and Discussion Influence of calcium added slag on the strength of magnesium oxychloride cement.
JOURNAL OF MATERIALS SCIENCE, vol 46(20): 6726-6733 [2] Ozer, M.
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY- MATERIALS SCIENCE EDITION.  
BULLETIN OF MATERIALS SCIENCE.vol 30(3): 239-246

Effect of Ni electrode on the characteristics of BaTiO3 based PTCR ceramics Huan Liu1, a, Rong Zhu1, b, Zhiping Zheng1, c, Dongxiang Zhou1, d, Qiuyun Fu1, e 1Department of Electronic Science & Technology, Huazhong University of Science & Technology, Wuhan 430074, China ahuan@mail.hust.edu.cn, bshadow96@163.com, ccorresponding author: zzp@mail.hust.edu.cn, ddxzhou@mai.hust.edu.cn, efuqy@mail.hust.edu.cn Keywords: PTCR; Ni paste; particle size; ohmic contact Abstract.
Experimental The main starting material used in this study was Ni powder synthesized by physical vapor method, which was then developed into the electrode paste.
Patent 5,493,266. (1996) [2] Seiter H and Heywang W J: Journal of Materials Science. 6(1971), p. 1214-1223 [3] Turner D R and Sauer H A: Journal of the Electrochemical Society. 107(3) (1960), p. 250-251 [4] Zhou D X and Gong S P: PTCR Materials and Their Applications (HuaZhong University of Science and Technology Press, 1989) (In Chinese) [5] Ueyama R, Ueyama T, Koumoto K and Kuribayashi K: Journal of the Ceramic Society of Japan. 109(8) (2001), p. 661-666 [6] Kanda A, Tashiro S and Igarashi H: Japanese Journal of Applied Physics. 33(1994), p. 5431-5434

By employing regression analysis, it established a set of regression functions, with the proportions of different source materials being independent variables and the magnetic properties of mixtures the dependent variables [9].
Journal of Sediment Research. 2 (2004) 76-81.
Journal of Sediment Research. 4 (2003) 52-56.
Advances in Earth Science. 7 (2005) 751-756.
Chinese Science Bulletin. 6 (1999) 504-510

Abdullah2ψ 1NANO-SciTech Centre (NST), Institute of Science; 2NANO-Invention Centre (NIT), Faculty of Applied Sciences; 3School of Chemistry and Environmental Studies, Faculty of Applied Sciences; Universiti Teknologi MARA (UiTM) Malaysia, 40450 Shah Alam, Selangor, Malaysia.
This difficulty is arising from the herbal plant structure itself which are rhizomatic and fibrous material [4].
Methods and Materials A standard of asiaticoside (biopurify chegdu chemical, China), asiatic acid was obtained from the Sigma Aldrich, acetonitrile (LC grade from Fisher Chemicals) and methanol HPLC grade (Friendemann Schmidt).
Qin, Chemical components of Centella asiatica and their bioactivities, Journal of Chinese Integrative Medicine, 5 (2007) 348-351
Lee, Drug nano- and microparticles processed into solid dosage forms: Physical properties, Journal of Pharmaceutical Sciences, 92 (2003) 2057-2068

The ribs’ material is the same as the shell.
The ribs’ material is the same as the shell.
Journal of Zhejiang University SCIENCE.
Applied Mechanics and Materials.
Journal of Zhejiang University.

Ahmad1,g 1Department of Mathematics, COMSATS Institute of Information Technology, Park Road, Chak Shahzad, 44000 Islamabad, Pakistan. 2Hassan II University, Faculty of Sciences Aïn Chock, Laboratory of Mechanics, B.P. 5366 Mâarif, Casablanca, Morocco. 3Faculty of Military Science, Stellenbosch University, Private Bag X2, Saldanha 7395, South Africa. 4Department of Mathematical Sciences, Federal University of Technology, Akure, Nigeria.
Makinde, Mixed convection slip flow with temperature jump along a moving plate in presence of free stream, Thermal Science, 19 (2015) 119–128
International Journal of Nonlinear Sciences and Numerical Simulation, 19(2/3) (2018) 93–106
Journal of Nanofluids, 8 (1) (2019) 51-62
Sandeep, Scrutinization of thermal stratification, nonlinear thermal radiation and quartic autocatalytic chemical reaction effects on the flow of three-dimensional Eyring-Powell alumina-water nanofluid, Multidiscipline Modeling in Materials and Structures, 14 (2017) 261–283

Materials and Methods: Materials.
Gessa, Alberto Alberti, Annalisa Martucci; Journal of Hazardous Materials,Vol.178 pp.218-225, ( 2010) [3] Wan-Ru C., Ching-Hua H, Chemosphere,Vol.79 779-785,( 2010) [4] Jin K., Hui-juan L., Yu-Ming Z., Jiu-hui Q., J.
Paul C., Journal of Colloid and Interface Science, Vol.344 pp.17–125,(2010) [5] Ying Wana,b, Yanyu Ba, Qixing Zhou, Vol.80 pp.807-812 (2010) [6] A.A.
Journal of Hazardous materials(2011) [8] B.H.
Cetisli, Journal of Colloid and Interface Science, Vol.286 pp.43-52, (2005)