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*limkp@upm.edu.my Keywords: Bulks, electrical properties, magnetic materials, perovskite manganites, structural.
Materials and Method Polycrystalline of La0.67(Sr,Ca)0.33MnO3 were prepared in conventional solid-state reaction method.
Tokura, Journal of Magnetism and Magnetic Materials 200 (1999)
Mendes, Journal of Magnetism and Magnetic Materials 322 (2010) 1174
Jung, Journal of Magnetism and Magnetic Materials 310 (2007 ) 2668.

Raman, Journal of Biomedical Materials Research Part A 93A (2010) p.1050
Asaoka: Journal of Biomedical Materials Research 38 (1997) p. 129
Kuo, Materials Science and Engineering C 20 (2002), p.153
Miyano: Journal of Biomedical Materials Research 30 (1996), p.287
Wallipa: Materials Science and Engineering C 33 (2013), p.675

The mechanical relations of the materials of the cylinders are described through the harmonic potential.
Mechanics of Composite Materials.
S.: Axisymmetric longitudinal wave propagation in a finite pre-strained compound circular cylinder made from compressible materials.
CMES: Computer Modeling in Engineering and Science.
Journal of Sound and Vibration.

Porous metallurgy materials is a new kind of materials developed within the last ten years, it has the properties of structural materials and functional materials.
The paper analyses the mechanical properties of oily porous materials joint from a theoretical point.
As the assumptions, the joint interface of porous and non-porous materials becomes simplified.
The porous is iron-base powder metallurgy materials; Trademark is 4001, which is produced in Quebec, Canada.
Mathematical Model for Elastic Contact of the Function Friction Materials.

Styrene-butadiene rubber (SBR) latex is widely used to modify cement-based materials.
Experiment Raw Materials.
Materials used include PII 52.5 Portland cement, Styrofan D623 SBR latex and pure water.
Lapointe, Laboratory and field performance of polymer-modified cement-based repair mortars in cold climates, Journal of Construction and Buiding Materials. 16 (2002) 365-374
Schorn et al., From microstructure to macrostructure: an integrated model of structure formation in polymer-modified concrete, Journal of Materials and Structures. 38 (2005) 601-607.

Experimental Materials Processing.
[6] Şengil, İ.A., Biosorption of Pb (II) ions by modified quebracho tannin resin, Journal of Hazardous Materials. 2009
Journal of Materials Chemistry A, 2017. 5(34): p. 17705-17733
International journal of molecular sciences, 2012. 13(10): p. 12336-12348
Journal of colloid and interface science, 2009. 337(2): p. 345-354

Journal of Materials Engineering and Performance. 26(3), (2017), 1365-138
Journal of Materials Science & Technology. 26(9), (2010), 810-816
In Materials Science Forum 2018 (Vol. 927, pp. 20-28).
In Materials Science Forum 2020 (Vol. 993, pp. 466-473).
Journal of Materials Processing Technology. 2019 Sep 1; 271:126-43

Journal of Hazardous Materials, 166 (2-3) (2009) 916-924
Chew, A review of fire processes modeling of combustible materials under external heat flux.
Materials Science Forum, 1038 (2021) 500–505
Problems of Atomic Science and Technology, 116 (4) (2018) 194–199
Problems of Atomic Science and Technology, 122 (4) (2019) 116–119.

Y2O2S:Eu3+as a powerful light-emitting properties of materials, Commonly used in the industry[4] .
[4] BAI Zhao-Hui1 RI Su-Hyon1,2 ZHANG Xi-Yan*,1 LU Li-Ping1 LIU Quan-Sheng1 MI Xiao-Yun1(1School of Materials Science and Engineering,Changchun University of Science and Technology,Changchun 130022,China)(2Department of Physics,University of Science,DPR of Korea).
[5] HAN Pengde,ZHU Yiqing,ZHANG Le,CHEN Yan,WANG Lixi,ZHANG Qitu(College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210009,China).
Preparation and Properties of Upconversion Luminescent Materials of Y2O2S:Yb,Ho, Journal of the Chinese Ceramic Society, July, (2012)
Journal of Materials Science & Technology,, July, (2012)

The stiffness smaller materials is selected and hydrodynamic performance and wake field of different materials propellers are analyzed in this paper.
The main parameters of the three materials are shown as Table 1.
Acknowledgements This study was supported by grants from the National Natural Science Foundation(51379040).
Journal of Ship Mechanics,2012,05:477-483
Journal of Hydrodynamics, 2010, 22(5), 457-461.