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Introduction Polylactic fiber (PLA) is a new renewable and biodegradable polymer material for better physical and thermoplastic and biological properties, which attributes more benefits to PLA products.
Materials and Methods Polylactic, Polyester, Polyamide, Polyacrylic, Diacetate, Cotton, Viscose and Silk fibers were selected to have IR, GCMS and Elementary testings.
Lim: Journal of Composite Materials, Vol. 41(2007), p. 1655-1669 [7] K.
Ueda: Textile Research Journal, Vol.77(2007), p.901-905 [8] Z.
Bo: Journal of Advanced Materials, Vol. 41(2009), p. 55-63

Material and Method Experimental material This study was conducted at Zhongxiao Town, Houshan Village in Haicheng Municipality.
Pei: Journal of Soil and Water Conservation, Vol.21 (2007), p.78-80
Zhang: Journal of Agro-Environment Science, Vol.29 (2010), p.122-127
Zhou: Chinese Journal of Soil Science, Vol.40 (2009), p.285-289
Zhou: Journal of Northwest A & F University (Natural Science Edition), Vol.35 (2007), p.136-140

Introduction Rock mass is neither continuous material nor totally discrete one, it’s a kind of defect material which contains many cracks.
(in Chinese) [3] X T Feng, S L Chen, S J Li, International Journal of Rock Mechanics & Mining Science , Vol. 38 (2001), p.557-568
Chin Journal of Rock Mechanics and Engineering Vol.18 (1999), p.497–502.
(in Chinese) [6] H Kawakata, A T Cho, M S Yanagidani, International Journal of Rock Mechanics & Mining Science, Vol.34 (1997), p. 151
[9] X T Feng, S L Chen, H Zhou, International Journal of Rock Mechanics & Mining Science , Vol. 41 (2004), p.181-192

Materials and Experimental Procedure The cyclic behaviour of the following four steels used for automobile connecting rods was investigated.
Acknowledgements Financial support was supplied by the Natural Sciences and Engineering Research Council of Canada.
Castex, “Fatigue Limits Prediction of Surface Treated Materials”, Journal of Materials Processing Technology, Vol.172 (2006), p.381
Braham,” High Cycle Fatigue Behavior Prediction of Shot Peened Parts”, International Journal of Fatigue, Vol.26 (2004), p.1053
Scholtes, “Residual Stresses and Fatigue of Metallic Materials”, Residual Stresses - Measurement, Calculation and Evaluation, DGM, Informationsgesellschaft Verlag, Oberursel, 1991, p.157.

Untreated wastewater generally contains high levels of organic materials with numerous pathogenic microorganisms, trace heavy metals, nutrients and toxic compounds.
Materials and Methods 1.
Materials/Instruments The materials/instruments used for the purpose of this research are as follows: weighing balance, gas chromatography, pH meter, thermometer, Gas analyzer, desiccators, crucibles, oven, gas collectors and biogas burner fabricated locally for checking gas flammability. 3.
Health and the Environment Journal 2012; 3(2): 1-9
Journal of Environmental Management, 90: 2488–2493

The surface metallization of aramid fiber is good for improving its value, and then enhance the application in the composite materials field.
Experiment Experimental material and equipment Material: Aramid fiber, and the fineness 1.37dtex, breaking strength 29.17 cN, and breaking elongation 5.38%.
Newton, C.W.M.Yuen, et al: Textile Research Journal, Vol. 76(2008), p.57-65 [4]Bi Hui, Zhao Qingxin, Wu Haiwei: Material Leader, Vol.22(2008), p. 71-76
[7]Yitong Wang, Ye Li, Jianjun Chen, et al: Journal of Zhejiang University of Science and Technology, Vol. 23(2006), p. 392-389, in Chinese
Journal of silk, Vol.50(2005), p. 21-23 , in Chinese

These materials can be transformed into various finished products, and packaging is one of the main application fields of plastic materials [2].
Materials and Methods Materials.
Tajalla: submitted to Makara Journal of Science (2023)
Series: Materials Science and Engineering. 1053 (2021) 1-9
Widiarti, Sintesis plastik biodegradable dari kulit pisang dengan penambahan kitosan dan plasticizer gliserol, Indonesian Journal of Chemical Science. 3 (2014) 163-167

All component materials are assumed as isotropic materials [4, 5].
This method can be applied on different similar layered systems with different materials and different levels of accuracy.
Journal of Fuel Cell Science and Technology, 2011. 8(1)
Journal of Power Sources, 2008. 180(1): p. 393-401
Journal of Power Sources, 2009. 194(1): p. 381-390

[5] Cong Wang* and Nam-Young Kim , Fabrication of Metal-insulator-metal Capacitors with SiNx Thin Films Deposited by Plasma-enhanced Chemical Vapor Deposition Transactions On Electrical And Electronic Materials Vol. 10, No. 5, October 25, 2009 [6] J.
Ramírez-Bon: Journal of Sol-Gel Science and Technology 58 (2010) 218
Semaltianos: Microelectronic Journal 38 (2007) 754. [7] T.
Wang: Japanese Journal of Applied Physics 47 (2008) 3185
Bardou: Journal of Magnetism and Magnetic Material 258 (2003) 90. [21] S.

References [1] JR Davis Davis &associated, Heat Resistant Materials, ASM Specjality Handbook, ASM Inter. 1997
Piekarski, Materials for Reformer Tubes.
Yanxiang: A Study of the Microstructures and Properties of Fe-V-W-Mo Alloy Modified by Rare Earth, Materials Science and Engineering A395 (2005) 281-287
Xue, Comparison on the Microstructure and Mechanical Strength of a Ni-based Alloy with and without 3wt.% CeF3 Addition, Materials Science and Engineering A257 (1998) 268-272
Wang, Influence of the Addition of Lanthanum on a W-Mo-Ni-Fe Heavy Alloy, International Journal of Refractory Metals &Hard Materials 17 (1999) 299-304