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When the sound waves spread to the material surface, some reflect in material surface, and others transmit forward within the material.
Acknowledgements This work was financially supported by Dalian Science and Technology Project (2011E13SF049).
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Communications Science and Technology Heilongjiang in China, 5:47-49. (2008)
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Materials and Methods Materials and object of study.
Series of Geology and Technical Sciences. 2020.
Journal of Ecological Engineering, 2019, 20(5), pp. 209–216.
Vol. 3, no. 1. 53–13. https://science.lpnu.ua/sites/default/files/journal-paper/2018/nov/14884/9.pdf
Scientific and Practical Journal of Ecological Sciences, No. 6 (57), 2024, pp. 127-133, ISSN: 2664-6110

It has been paid much attention as transparent semiconductor material and gas sensing material in the late 1990s [5-8].
After filtering the copper oxalate precipitation, the filter cake was mixed with Sr(NO3)2 solution to get slurry solution of materials.
When the n-semiconductor and p-semiconductor materials are well joined together, the Fermi level of the two semiconductors will be at the same level.
Honaga, and S Fujitsu: Journal of the European Ceramic Society Vol. 25 (2005) ,p.2167 [9] D.S.
Lokhande: Applied Surface Science Vol.254 (2008),p. 3269 [10] M.

Methodology Materials.
Raw materials used were commercial bentonite, known as Nanoclay, Nanomer PGV from Sigma-Aldrich (USA), and natural bentonite from China which was supplied by Multifilla (M) Sdn.
Lee : Journal of Industrial and Engineering Chemistry Vol.16 (2010), p.837-841 [7] G.
Szekeres: Applied Clay Science Vol.34(1-4) (2007), p. 105-124 [9] S.
Amrani: Journal of Minerals and Material Characterization and Engineering Vol. 2 (2014), p. 404-413 [10] L.J Michot, Bihannic, I.Thomas ,F.

The material’s hardness is not affected by the phase decomposition, within the precision of the measurement.
As the phase decomposition progresses into the grains, it “erases” the grain structure of the material (Fig. 5).
Schaller, Materials Science and Engineering: A 521-522 (2009) 52-54
Yasuda, Journal Of Materials Science 27 (1992) 504-510
Kanzawa, Journal Of The Less-Common Metals 60 (1978) 65-78

[3] Weiyan Zhao, Lang Wei, Jifeng Wang: Advanced Materials Research, 663, 545-551,2013
[4] Yingshi Tang, Mingmei Chen, Jiahui Pan: Journal of hunan university (natural science edition),2009,36(4):29-33
[5] Scuracchio, Bruno Geoffroy, de Lima, Nelson Batista: Materials and Design, 2013,47, 672-676
International Journal of Engineering Systems Modelling and Simulation, 2011, 3(3), 126-139
[8] Benming Duan, Hongxin Zhang, Jinzhu Shi: Applied Mechanics and Materials, Vols. 397-400 (2013) pp 637-642

Thiol-ene polyurethane is thermally sensitive materials which however can also be cured by UV radiation performed at a normal temperature[4].
Based on the literature, ultraviolet (UV) curable polymers based on renewable materials (vegetable oil) can improve the performance of existing polymers and compete with their corresponding petrol-based chemicals in different aspects, including environmentally friendly and economic factor.
Experimental Materials.
The main material use is Epoxidized Palm Oil (EPO) which was received from Budi Oil Sdn.
Risti, How to read and interpret ftir spectroscope of organic material: submitted to Journal of Science & Technology (2019) [5] E.

The effect of material removal rate on normal grinding force.
The wear of the diamond with 288mm3 of material removed volume was observed using a toolmaker microscope.
Acknowledgments This study was partly supported by Supported by Program for Changjiang Scholars and Innovative Research Team in University (IRT1063), the National Natural Science Foundation of China (U1034006) and the Natural Science Foundation of Fujian Province (2010J01294) in China.
Luo: International Journal of Machine Tools and Manufacture, vol. 36 (1996) No.6, p.661
Chen: Journal of Materials Processing Technology, vol. 69 (1997) No.1-3, p.289.

Piezoelectric materials have the advantage of being lightweight, temperature insensitivity low-cost, easy of implementation that can be utilized for passive and active control of structural vibration.
Shape control is one of the major applications for piezoelectric materials.
Conclusions Piezoelectric materials are often used as strain actuators and active control of structural vibration, as they are compact and have a wide frequency range.
Crawley and J. de Luis, Use of piezoelectric actuators as elements of intelligent structures, AIAA Journal Vol.25 (1987), 1373-1385
Nien, Adaptive modeling and shape control of laminated plates using piezoelectric actuators, J. of Materials and Processing Technology, Vol.189 (2007) 231-236

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