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This model using the disc and the ball whose materials were GCr15 were experimentally demonstrated on a pin-on-disc testing machine.
Introduction The wear loss or wear rate is one of the most important indexes to evaluate the tribological performance of materials.
Experiments The pin and disc materials are GCr15.
And compared with the value obtained by the surface profilometry method, the wear loss acquired by SGM model is high, because the materials of the tribo-pairs are the same and strong adhesive, and the wear loss by surface profilometry method do not include the counterpart wear.
Pinder and A.Unsworth, A novel technique for the detailed size characterization of wear debris, Journal of material science: Materials in medicine, 11(2000):267-271

Material, Sample and Methods The materials used in carrying out the research is CAC of BVT fruit shells and the sample for the research was Surface water.
Material and Sample Collection.
Galadima, “Arsenic Contamination of Domestic Water from Northern Nigeria,” International Journal of Science and Technology, vol. 2, no. 1, 2012, [Online].
Garg, “A comprehensive review on removal of arsenic using activated carbon prepared from easily available waste materials,” Environmental Science and Pollution Research, vol. 24, no. 15, pp. 13295–13306, May 2017, doi: 10.1007/s11356-017-8842-7
Chen, “Removal of As(III) and As(V) from aqueous solutions using nanoscale zero valent iron-reduced graphite oxide modified composites,” Journal of Hazardous Materials, vol. 268, pp. 124–131, Mar. 2014, doi: 10.1016/j.jhazmat.2014.01.009.

Their applications in luminescent material, nonlinear optical materials and photocatalysis materials are expected [5].
Journal of Materials Science & Engineering. 2000, 18 (1): 103-105
Material Science & Technology. 2000, 8 (3): 103-108
Functional Materials. 2002, 33(4): 425-429
Journal of Colloid and Interface Science, 2001, 240: 525-532.

Methodology Materials.
Australian Journal of Basic and Applied Sciences, 2011. 5(7): p. 1026-1035
Advanced Materials Research, 2012. 341-342: p. 189-193
Journal of Material Chemistry, 2003. 13: p. 1161-1165
Australian Journal of Basic and Applied Sciences, 2011. 5(9): p. 441-449

The results showed that it was deteced gasoline composition in extracted material evidence of vehicle combustion residue,but the vehicle were diesel fuel car.
Material evidence extraction.
[2] XINGRuokui,WANGSongcai,DAIWeilie,etc.Analysis of Residues of Gasoline,Kerosene and Dlerel Oil Collected at Arson Scenes by ADT/GC/MS[J].Chinese Journal of Forensic Sciences. 2008, (4):22-25
Research Progress of Flammable Liquid Residue Analysis at Arson Scenes[J].Journal of Chinese peoples public security university (Science and technology) .2006, (4): 18-21
[4] QIURong.Separation of ignitable residues from fire debris samples and their analysis by gas chromatography-mass spectrometry[J].Journal of Safety Science and Technology. 2007, (1):35-39.

In China, the ESM has been applied to forecast the trend in many fields, such as food production [9], marine catches 10], infectious disease forecast [11], and the price of construction materials [12].
Thanks for Limei Yuan, a teacher in Qujing Normal University, who helped me collect some materials and correct the grammatical mistakes of this paper.
[3] Cha ngjiang Wang, “Selection of Smoothing Coefficient via Exponential Smoothing Algorithm,” Journal of North University of China(Natural Science Edition), vol. 27 pp. 558–561, 2006
Yager, “Exponential smoothing with credibility weighted observations,” Information Sciences, pp. 96–105, 2013
Snyder, “Forecasting intraday time series with multiple seasonal cycles using parsimonious seasonal exponential smoothing,” The International Journal of Managerment Science, pp. 748–757,March 2010

Introduction As we know, borate and phosphate are very important optic function materials, such as LuBO3:Ce 3+, Pb3Lu (PO4)2:Ce 3+ for flash material; LaPO4:Ce 3+, Tb3+, (Y,Gd)BO3:Eu 3+ for fluorescence material; and YAl3(BO3)4,LnP2O14 for laser material.
These materials were mixed thoroughly.
As the picture, the blue emission in 454nm is good for blue materials because of the narrow and acuity peak.
Bizarri , et al.: Optical Materials Vol.28(2006), p.58
Hao, et al.: Materials Letters Vol.60 (2006), p.639

Design Structure transmission function 3D modeling of indexing plate and roller 3D modeling of cam Virtual assembly Define of materials, constraints, drive Verify virtual prototype Physical prototype Y N Obtain cam contour Fig.1 Process of establish virtual prototype Establishment of 3D Model 3D model of cam was established based on obtained the cam contour curve.
Then setting parameters definition of materials, constraints, drive, etc.
Acknowledgements This work was financially supported by Shandong Natural Science Foundation of China (grant No.
Xiao: Mechanical Science and Technology (2002) , p. 91 (In Chinese) [5] W.
Guo: Journal of University of Jinan (Sci. and Tech.)

Materials and methods Materials.
Fox et al.: Journal of AOAC International Vol. 85 (2002), p. 1052- 1056 [3] C.A.
Ge et al.: Journal of Anhui Agricultural Science Vol. 38 (2010), p. 2966 -2967 [5] H.Y.
Advanced Materials Research Vol. 183-185(2011), p. 40- 44 [8] R.
Pang: Journal of Zhengzhou Institute of Technology Vol. 22(2001), p. 69- 72

Bottini, Roughness prediction in coupled operations of fused deposition modeling and barrel finishing, Journal of Materials Processing Technology, 219, 2015, 181-92
Journal of materials processing technology, 132(1-3), 2003, 323-31
Additive Manufacturing of Emerging Materials.
Materials Today: Proceedings, 26, 2020, 173-179
Materials Today: Proceedings, 22, 2020, 2772-2778