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The ribs’ material is the same as the shell.
Acknowledgments The authors are grateful for the financial assistance provided by the National Natural Science Foundation of China (Contract No.51109051) and the Zhejiang Provincial Natural Science Foundation of China(Contract No.
Journal of sound and vibration. 1990,138(2),173-191 [2] P.
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Journal of Zhejiang University SCIENCE. 2005, 6A(10):1122-1127 Journal of the Acoustical Society of America., 1984. 75(3):715-722

The process can be divided into six major categories:(a)cement based binders;(b)lime based binders; (c)adsorbents; (d)thermoplastic materials; (e)thermosetting polymers; (f)vitrification.
First, pickling sludge can be directly used in the production process as raw materials or other materials; second, recovering the metal elements in the sludge.
Department of Materials Science and Metallurgical Engineering, Pretoria: University of Pretoria, 2005 [2] B.
Bjorkman: Scandinavian Journal of Metallurgy, Vol.34(2005),p. 31 [6] Yide Zhao, Peng Zhang and Zhichao Wu: Environmental Engineering, Vol.20(2002),p.47. in Chinese [7] R.
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Introduction Lignin, like cellulose and hemicelluloses, is a major component of plant materials and the most abundant form of aromatic carbon in the biosphere.
Sodium lignosulfonate (NaLS), a by-product of papermaking industry, is a half natural polymer material [2,3], which meets the requirement of polymer additive for water-based drilling fluids.
The interesting of our research group is to develop oil field chemicals or additives from biobased materials, such as lignin, cellulose, maizena and tree gum.
Shaanxi Science and Technology Press: Xi’an, 2001, 24
[4] Zhang H., Pioneering with Science & Technology, 6: 56-57. (2008) [5] Li S.B., Guo Y., Zhng H.L., Environmental Protection of Oil ＆ Gas Fields, 11(1): 17-20. (2004) [6] Li Z.B., Liu H.W., Advances in Fine Petrochemicals, 5(7): 6-9. (2004) [7] Wang S., Hu S.Q., Petroleum Drilling Techniques, 31(2): 24-26. (2003) [8] Wei X.M., Liu X.L., Wang W., Chemical Engineering of Oil and Gas, 30(6): 305-307. (2001) [9] Wei X.M., Liu Q.W., Yin G.Q., Drilling & Production Technology, 23(6): 63-65. (2000) [10] Zhang J., Li Z.Z., Journal of Cellulose Science and Technology, 5(2): 37-41. (1997) [11] Chen G., Yang N.W., Tang Ying, Drilling Fluid & Completion Fluid, 27(4): 13-15. (2010) [12] Xue J.W., Tai D.S., Li Z.Z., Journal of Cellulose Science and Technology, 8(4): 14-18. (2000) [13] Yan J.N., Drilling Fluids Technology.

Introduction Cellulose, as the major skeletal component of plant biomass, presents an abundant renewable polymeric raw material.
Experimental Materials.
Baker, Regenerating cellulose from ionic liquids for an accelerated enzymatic hydrolysis, Journal of Biotechnology, 139(2009), 47-54
Tan, Study on crystal structures of enzyme-hydrolyzed cellulosic materials by X-ray diffraction, Enzyme and Microbial Technology, 36(2005), 314–317
Martin, An empirical method for estimating the degree of crystallinity of native cellulose using the X-ray diffractometer, Textile Research Journal, 29(1959), 786–794.

Sikder, Chemical mechanical planarization for microelectronics applications, Materials Science and Engineering: R: Reports 45(3-6) (2004) 89-220
Lu, Material removal mechanism of copper chemical mechanical polishing in a periodate-based slurry, Applied Surface Science 337 (2015) 130-137
Oliver, Chemical-mechanical planarization of semiconductor materials, Springer Science & Business Media2013
Babu, Almost Complete Removal of Ceria Particles Down to 10 nm Size from Silicon Dioxide Surfaces, ECS Journal of Solid State Science and Technology 7(5) (2018) P243-P252
Kim, A Water Polishing Process to Improve Ceria Abrasive Removal, ECS Journal of Solid State Science and Technology 8(8) (2019) P430

Aashuri, Semi solid structure for M2 high speed steel prepared by cooling slope, Journal of Materials Processing Technology (2010), vol 210, pp. 1632-1635
Aashuri, Investigations on the suitability of some ferrous alloys for semi-solid processing, Journal of Achievements in Materials and Manufacturing Engineering (2009), vol 34, pp. 188-195
Yangimoto, Microstructural evolution during RAP process and deformation behavior of semi-solid SKD61 tool steel, Journal of Materials Processing Technology 212 (2012) pp 1731-1741
Atkinson, Micorstructural investigations of XW-42 and M2 tool steels in semi-solid zones via direct partial remelting route, Journal of Materials Science 46 (2011) pp 7966-7705
Atkinson, Modelling the semisolid processing of metallic alloys, Progress in Materials Science, 2005, vol. 50, pp. 341–412 [62] H.V.

This conference was organised by Department of Metallurgical Engineering, Chulalongkorn University, together with National Metal and Materials Technology Center (MTEC) and Metallurgy and Materials Science Research Institute (MMRI), to celebrate the 40th anniversary of the Metallurgical Engineering department.
It is our pleasure to thank the editorial board of the Journal of Key Engineering Materials for the readiness to publish this volume devoted to TMETC-8.
Amnuaysak Chianpairot National Metal and Materials Technology Center Dr.
Thanaporn Korad National Metal and Materials Technology Center Mr.
Peerapong Pinwanich National Metal and Materials Technology Center Jointly organisers: Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University Metallurgy and Materials Science Research Institute, Chulalongkorn University National Metal and Materials Technology Center Sponsors: Thai Parkerizing Company Limited Thai Tohken Thermo Company Limited POSCO-Thainox Public Company Limited Sahaviriya Steel Industries PLC EDAX Inc.

[3]Material with a defect, casting a vent
Bearing material.
Light series, high quality materials made of bearing the lower the noise, such as maintains a nonmetal material choose the noise is far lower than the metal materials made of maintains a bearing noise.
Journal of Japanese Society of Tribologinists.2003.48(1)：40-50 [9]Arenas Jorge P.
Journal of Mechanical Engineering.2005.51(4):180-195

MMC-components in (near-) net shape quality and, thus, to make these interesting materials attractive to mass production.
The density of the materials was increased by subsequent thixoforging compared to the sintered billets (Table 2).
Custom-made Materials for Automotive and Aerospace Engineering, Wiley-VCH Verlag GmbH & Co.
Raybould, The properties of stainless steel compacted dynamically to produce cold interparticle welding, in: Journal of Material Science 16 (1981) 589-598
Degischer, Short carbon fiber-aluminium matrix composite material prepared by extrusion of powder mixtures, in: Journal de physique IV, Colloque C7, supplément au Journal de physique III (1993).

Experimental Raw Materials.PII42.5R Portland cement was produced by Zhujiang Cement Plant, Guangzhou, China, the chemical composition of cement refers to Table 1, and physical properties refers to Table 2.
Moreover, from figure 1 and figure 2, it is clear that, after addition of PVA, the flexible strength / compressive strength (about 1/6) of the cement based materials with PVA, is far bigger than that of the cement based materials without PVA (about 1/10).
References [1] Qi Meng, Li Zongjin, Ma Baoguo: Journal of Zhejiang University Science, 2002, 3(2), p.188-193.
(in Chinese) [2] Xiang Xin,Li Beixing : Journal of Wuhan University of Technology, Aug. 1999. 21(4), p.10~14.
Mehta: Concrete: Structure, Properties and Materials, translated by Zhu Yongnian, Shen Wei, Press of Tongji University ,1991.