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The opening ratio o is defined as the following equation: (3) Sound absorbing materials are adhered to the walls of the passages.
Clearly, as q increases, the area covered by sound absorbing material increases, the noise reduction effect should become better.
Journal of infrasture Planning and Management, 1996, 530:117-122 [4] S.
Journal of Traffic and Transportation Engineering,2007,7(4):6-9.
Journal of Southwest Jiaotong University,1991, 4: 74-80 [10] Zhuang Damin, Lin Guohua.

Weck, Handbook of Machine Tools, New York, Wiley, 1984 [2] Jung Do Suh, Seung Hwan Chang, Dai Gil Lee, Jin Kyung Choi, Bo Seon Park, Damping characteristics of composite hybrid spindle covers for high speed machine tools, Journal of Materials Processing Technology, 113, 2001, pp. 178-183
Enchev, Geometrical accuracy of spindles of metal-cutting machines, International Journal of Machine Tools and Manufactures, Vol. 37, No. 10, 1997, pp. 1441-1447
Nickel, Vibration based preload estimation in machine tool spindles, International Journal of Machine Tools & Manufacture, vol. 41, 2001, pp.567-588
Aini, Bearing induced vibrations in precision high speed routing spindles, International Journal of Machine Tools & Manufacture, vol. 40, 2000, pp.561-577
Panciu, Spindle analysis using numerical methods, Recent Researcher in System Science, Proceedings of the 15th WSEAS International Conference on Systems, 2011, pp.352-357

The constitutive relation of materials.
Journal of Shen Yang Jianzhu University (National Science), 2006, 22(1): 7-10
High-strength concrete columns confined by rectangular ties .Journal of Structural Engineering, ACSE, 1994, 120(3): 783-804
Journal of Structural Engineering, ASCE, 1988, 144 (2): 332-351
Journal of Structural Engineering, ASCE, 1998, 124(12): 1438-1447

The feasibility of composting garden wastes was analyzed, and some related technical processes including the treatment of materials, the adjustment of C/N ratio, and the choice of strains were described.
Composts usually consist of particles of different sizes, but their distribution may vary depending on the feeding materials.
The optimum water content for compost should be at 40%-60%; the adequate C / N ratio for compost is in the range of 25:1-35:1; during composting, pH changes frequently, but the pH of raw materials is close to 7; then it should be add 2-5 kg/m3 of microbial strains and mixed in the good regulation of raw material[7].
The annual output of greening waste and composition of raw materials are mainly affected by season.
[14]Jia L H: Journal of Northeast Agricultural University,vol.36(3)(2005),p.23(In Chinese)

Materials and methods: Chemicals:chlorpyrifos (99.5%) and TCP (99.5%) were purchased from Dr.
(a) (b) Fig .1 Chemical structure of chlorpyrifos (a) and TCP (b) Soils:the soil materials were collected from the upper 30 cm of five fields with soil types representative of agricultural land use in China: black soil, fluvo-aquic soil, limestone soil, red soil and Purple soil.
Chinese Journal of Analysis Laboratory,Vol. 8(2011),p.19-23 [21] Liu Cheng-lan, Zhong Guo-hua, GAO Yan, Chen Wen-tuan Hu Mei-ying.
Journal of Northwest A&F University (Nat.Sci.Ed.)
Journal of Agro-Environment Science, Vol,30(2011),p.1114-1121 [33] htty://OECD-ilibrary.org/content [34] Cui Yindi, Zhang Fucang, Li Zhijun, Qi youling.

Journal of Hazardous Materials, 468, 133453.
Applied Sciences, 13(7), 4095. https://doi.org/10.3390/app13074095 [7] Irga, P.
Bulletin of the National Academy of Sciences of Ukraine, (4), 21–38
Microalgae as an object of bioenergy: IBASU-A collection species—promising biomass producers as a source of raw materials for biofuels.
Bulletin of the National Academy of Sciences of Ukraine, (5), 49–54

Hong Kong Science Park, Hong Kong * Corresponding author: melhxie@scut.edu.cn Keywords: UV-LIGA, electroforming.
However, by adding other materials, e.g. phosphor-Nickel (Ni-P), these alloys have their attractions, being stainless, non-magnetic and very high hardness.
When the phosphorous content reaches over 12 wt%, the Ni-P alloy is with non-magnetic properties while pure nickel is ferromagnetic material.
“Microfabrication: LIGA-X and applications”, Applied Surface Science, 164, pp.97-110, 2000
“Recent developments in the electrodeposition of nickel and some nickel-based alloys”, Journal of Applied Electrochemistry 36, pp.957–972, 2006

Trahair: Journal of Structural Engineering, Vol. 125 (1999), p. 1291 [3] Y.L.
Trahair: Journal of Structural Engineering, Vol.120 (1994), p. 2041 [4] L.H.
Clarke: Journal of Engineering Mechanics, Vol.125 (1999), p. 1358 [5] M.A.
Pi: Journal of Structural Engineering ASCE , Vol.118 (2002), p. 719 [6] J.
Guo: Tsinghua Science and Technology, Vol. 7 (2002), p. 322 [8] J.

Yasuda1,c* 1Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan aryota.morioka@mat.eng.osaka-u.ac.jp, bk_cho@mat.eng.osaka-u.ac.jp, chyyasuda@mat.eng.osaka-u.ac.jp Keywords: Beta-type Ti alloy, Single crystal, Deformation behavior, Critical resolved shear stress Abstract.
Experimental Material preparation.
Sun, Dependence of stress-induced omega transition and mechanical twinning on phase stability in metastable β Ti-V alloys, Materials characterization 107 (2015) 149-155
Vyskocil, Assessment of molybdenum toxicity in humans, Journal of applied toxicology 19 (1999) 185-192
Yashiro, Design and mechanical properties of new β type titanium alloys for implant materials, Materials science & engineering A 243 (1998) 909-917

Introduction The double glow plasma surface metallurgy technology [1] is an advanced method for surface alloying with self-dependent intellectual property by Chinese scholars, which has great advantages in diffusion speed, bonding strength, energy consumption, materials saving and so on [2].
[4] Y.Gao, J.Y.Xu, Q.Gao, J.P.An and Z.Xu: Engineering Science Vol. 10 (2008), P. 27.
Xu: Plasma Surface Metallurgy (Science Publishing, China 2008).
[8] Z.H.Li, X.P.Liu and Z.Xu: Journal of Applied Sciences Vol. 18 (2000), P. 185.
[9] Y.Zheng and Y.Gao: Materials Review Vol. 22 (2008), P. 139.