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Materials and Methods a) Sample collection Different areas of Sathyabama University, Chennai, Tamil Nadu, India were selected for collection of soil.
Under careful observation it is noted that the silver nano particle are surrounded by the thin layer of other materials which we supposed to tell it may be capping organic materials.
Journal of Materials Chemistry.
Granqvist, Bacteria as workers in the living factory: metal accumulating bacteria and their potential for material science, Trends Biotechnol. 19 (2001) 15–20
[13]Ramesh P, Muthukkumarasamy S, K.Dhanabalan, T.Sadhasivam and K.Gurunathan,E: Nanotechnology: Application, Nano-hazard and its Toxic effects; (2011) Journal of Life Sciences 1(1), 30 -38

Chai Feng, Xu Ling and Liao Yunmao introduced nanometer materials in the studies on In-Ceram materials.
The flexural strength was an important indication for the mechanical properties of materials.
With the constant progress of the Materials Science and Technology as well as the booming research and development of nano-ceramics, nanometric composite ceramics and other novel ceramics, zirconia and related composite ceramics is exhibiting broader application prospects in the field of dental materials.
Xiu: Key Engineering Materials Vols.375-376(2008), p. 449-453
Key Engineering Materials Vols. 375-376 (2008), p. 449-453

Preparation of TiAl Intermetallic Alloy by Gelcasting Qing Ye 1,a, Zhimeng Guo1,2,b , Qikai Duan3,c, Chunlei Yang3,d and Junjie Hao1,2,e 1School of materials science and engineering, University of Science and Technology Beijing, Beijing 100083, China 2State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China 3School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China aluckydogor@yahoo.com.cn, bzmguo@ustb.edu.cn, cdqk1991@sina.com, d1540973572@qq.com, ehaojunjie@ustb.edu.cn Keywords: TiAl, Intermetallic, Gelcasting Abstract.
Gelcasting [8, 9], which was developed for the forming of ceramic materials, has been expanded to metal field.
Acknowledgement This work was financially supported by the National Natural Science Foundation of China (No. 51274039) and State Key Laboratory for Advanced Metals and Materials (2010Z-09).
Kestler, Processing and applications of intermetallic gamma-TiAl-based alloys, Advanced Engineering Materials 2 (2000) 551-570
Hao, et al., Gelcasting of metal powders in nontoxic cellulose ethers system, Journal of Materials Processing Technology 208 (2008) 457-462

Materials 2019;12
Materials Science and Engineering: A 2018;710:111-20
International Journal of Plasticity 2019:102646
Metallurgical and Materials Transactions A 2018;49:2631-43
Materials Science and Engineering: A 2018;726:309-19.

The most usual material for this application is zirconia doped with yttria.
G. et ali, Mechanics-based Scaling Laws for the Durability of TBC, Progress in Materials Science, 46, p. 249-271, 2001
Materials Processing Technology, 92-93, p. 195-202, 1999
J., Effect of Ta2O5, Nb2O5, and HfO2 alloying on the transformability of Y2O3stabilized tetragonal ZrO2, Journal of American Ceramic Society, 73[1]115-20, 1990
Y., et ali, Low thermal phase stability and mechanical properties of Y2O3 and Nb2O5 co-doped tetragonal zirconia polycrystal ceramics, Journal of Materials Science Letters, 17, p. 185187, 1998

Therefore, it is better to use pavement materials with good deformation performance, low resilience modulus and good fatigue resistance.
The lower layer material should adopt high modulus material.
Journal of civil engineering, 2005, 38 (1): 51~59
Journal of Heilongjiang Academy of Engineering ( NATURAL SCIENCE EDITION ), 2007(12)
The application of polyester fiber materials in Inner Mongolia the Yellow River bridge deck asphalt concrete pavement [J].

So utilization of the natural materials is considered as the potential route to synthesize materials with desired structures and properties.
Harris: Materials Letters Vol.63 (2009), p: 748 [8] S.R.
Xu, et al: Materials Letters Vol.61 (2007), p: 2714 [14] C.V.
Ishikawa: Journal of Colloid and Interface Science Vol.300 (2006), p: 225 [20] Z.C.
Li: Biomedical Materials Vol.4 (2009), p: 82 [22] F.

“Environmental friendly polymer materials.Polyolefins-lignin based materials”.
Advanced Materials 12, 1841-1846
Journal of Applied Polymer Science, 92, 265–271
Journal of Material Cycles and Waste Management
“Lignin as a base material for materials applications”.

Materials and Methods Climate Overview.
References [1] J.Vymazal, “Removal of Heavy Metals in a Horizontal Sub-Surface Flow Constructed Wetland,” Journal of Environmental Science and Health, vol. 40, pp. 37–41, 2005
Wu, “Comparative study of microbial community structure in different filter media of constructed wetland,” Journal of Environmental Sciences, vol. 22, no. 1, pp. 127–133, 2010
Ouakouak, “Research Article,” Journal of Fundamental and Applied Sciences, vol. 10, no. 2, pp. 265–276, 2018
Kurniadie, “Wastewater Treatment Using Vertical Subsurface Flow Constructed Wetland in Indonesia,” American Journal of Environmental Sciences, vol. 7, no. 1, pp. 15–19, 2011

Preface The problem of contact materials subject to relative movement is becoming increasingly important for lifetime of the equipment, pollution and cost in energy.
This can vary considerably depending on the choice of the pair of materials and the experimental device.
The intrinsic mechanical properties of materials are complementary and play a direct role in the tribological process.
The work presented at the ACMA'14 conferences are multidisciplinary, by interacting mechanics, physical chemistry and materials science on a different scale ranging, the goal is to explain, even if the reactions of the contact surfaces are very complex, the basics of tribology, the process of friction and wear, to apply the test methods on the materials in contact and get material coatings on other surfaces by different methods and processes mechanical, physical and chemical.
This special issue of the journal "KEM: Key Engineering Materials" consists of a collection of studies both in the fields of experimental simulation of tribology than the science of surfaces in contact by relative movements in relation to the mechanical properties materials.