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Conclusion Ultrasonic nonlinear parameter is so small that can not be easily measured at the early mechanical properties degradation of metallic materials.
The pulse-inversion technique provides a reference method for the nondestructive testing and evaluation of degradation of mechanical properties of materials and structures.
Nagy, Fatigue damage assessment by nonlinear ultrasonic materials characterization, Ultrasonics. 36(1998) 375-381
[3] Jhang Kyung-Young, Nonlinear ultrasonic techniques for nondestructive assessment of micro damage in material: a review, International Journal of Precision Engineering and Manufacturing. 10(2009) 123-135
[5] SHUI Guoshuang, KIM Jim-Yeon, QU Jian-min, A new technique for measuring the acoustic nonlinearity of materials using Rayleigh waves, NDT&E International. 41(2008) 326-329

Putra1,d and Anung Syampurwadi2,e 1Department of Physics, Faculty of Mathematics and Natural Sciences, Udayana University, Kampus Bukit Jimbaran, Badung 80361, Bali, Indonesia 2Research Center for Advanced Materials, National Research & Innovation Agency a*rupiasih@unud.ac.id, bmariayulniimas@gmail.com, csupardi@unud.ac.id, dketutputra@unud.ac.id, eanun002@brin.go.id Keywords: Gold Nanoparticles (AuNP), Biosynthesis, Sambiloto Leaf, SPR, Synthesis Rate.
Biosynthesis is a way of synthesizing nanoparticles using media from biological materials, both microorganisms and plants.
Materials and Methods Materials.
Leaf Tea Formula as a Functional Drink in Preventing Coronavirus Diseases and Degenerative Diseases, Macedonian Journal of Medical Sciences 9 (2021) 196-201
[13] Ika Nindya Irianti, Agustina Dwi Wijayanti, Guntari Titik Mulyani, The Anticoccidial Property of Sambiloto (Andrographis paniculata) Leaf Extract, Indonesian Journal of Veterinary Sciences 3 (2022) 8-13

Materials Sci. 52 (2012) 293–297
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Alexander, CRC materials science and engineering handbook, 3rd ed.

Experimental Study Materials Ordinary Portland Cement (OPC).
Materials today proceedings 5(5) (2018), pp. 11356 – 11363
Construction and Building Materials, 180 (2018), pp. 98–307
Indian Journal of Science and Technology, 10(12) (2017) [8] Parveen, Dhirendra Singhal and Bharat Bhushan Jindal, in: Experimental study on geopolymer concrete prepared using high-silica RHA incorporating alccofine.
[11] Mohd Shariq, Jagdish Prasad, Amjad Masood: Studies in ultrasonic pulse velocity of concrete containing GGBFS, Construction and Building Materials, 40 (2013), pp. 944-950

Recently, ionic conducting polymer film (ICPF) [2] has been extensively developed as new materials.
The tail is actuated by ICPF, a body is made of wood material.
The body of micro-robot is mainly made of wood material for lightweight.
[5] Li Desheng, Nie Lin and Guo Shuxiang: Chinese Journal of Sensor and Actuators, vol.21, No.11 (2008) p. 1840-1843
Howell, Craig Lusk, et al, Journal of Machine design, vol. 127, p. 760-765 (2005)

Results and Discussion Bonding interface observation For discussing the impact of the bonding material to the zygote, SEM was used to observe the vertical cutting surface.
X-ray diffraction was exploited to identify the material of diffusion layer and the walkthroughs range from 20 to 90°.
Hidehiko: Diffusion Bonding of Tungsten to Titanium, Quarterly Journal of the Japan Welding Society, 19-1(2001), 85-91
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Takehiko: Diffusion Bonding of Tungsten to Copper, Quarterly Journal of the Japan Welding Society, 16-3(1998), 319-323.

Materials and Methods Materials.
Karthikeyan, European Journal of Pharmaceutical Sciences, 16, 185-192 (2002)
Journal of Pharmaceutics, 245, 45-54 (2002)
Kawashima, Journal of Controlled Release, 90, 313-322 (2003)
Journal of Pharmaceutics, 348, 115-124 (2008).

The material of pinion and large gear are selected 42CrMo.
Acknowledgements This work was financially supported by National Natural Science Foundation of China (51075047).
[3] Nie Yongjun, Luo Jingdong: Journal of Qiongzhou University.
[4] Chen Dianhua, Li Yuguang: Journal of Engineering Design.
[6] Liu Hesong, Jiang jing: Journal of Coal Mine Machinery.

And soil is simulated by Solid45 element, soil material model is D-P model, and parameters of soil are shown in Table 1.
Prediction of slope failure due to earthquake, Chinese Science Bulletin, Vol.54 16 (2009) 2888-2894
Journal of China Coal Society, Vol. 35 10 (2010) 1621-1626
Journal of China Three Gorges University, 1 (2010) 39-42
Journal of Earth Science, Vol. 23 3 (2011) 285-296

China, 312000 2College of Life Science, Shaoxing University, Shaoxing, P.R.
Vol.25(2003), p.4 [2] Li Z., Huang W. and Xie K.: Journal of Environmental Sciences.
Vol.27(2005), p.56 [7] Gao J.M.: Journal of Chongqing Architecture University.
Vol.23(2000), p.45 [8] Wen D.H., Zhang X. and Wu W.Z.: Journal of Peking University.
Vol.39(2003), p.494 [9] Zhao Y.P., Jing W. and Cao D.W.: Environmental Science.