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Introduction Additive Manufacturing (AM) can be defined according to the American Society for Testing and Materials (ASTM) as: “The process of joining materials to make parts or objects from 3D model data, usually layer upon layer, as opposed to subtractive manufacturing methodologies” [1].
Tormey, et al., "Comparison of the porosity and mechanical performance of 316L stainless steel manufactured on different laser powder bed fusion metal additive manufacturing machines", Journal of Materials Research and Technology, 2021 ; 13 : 2361-2374, https://doi.org/10.1016/j.jmrt.2021.06.027 [6] A.
Obeidi M., Monu M., Hughes C., Bourke D, Nur Dogu M., Francis J., Zhang M., Ul Ahad I., Brabazon D.,” Laser beam powder bed fusion of nitinol shape memory alloy (SMA)”, journal of materials research and technology 2021;14:2554-2570, doi.org/10.1016/j.jmrt.2021.07.126 [8] Gora,W.S.; Tian, Y.; Cabo, A.P.; Ardron, M.; Maier, R.R.; Prangnell, P.
Materials (Basel) 2019;12(6). https://doi.org/10.3390/ma12060991 [10] Muhannad A Obeidi, “The Innovation of Laser Polishing” The Open Access Journal of Science and Technology, vol9, ArticleID101e110, 01pages, 2021
[12] Mahato V., et al., “Detecting voids in 3D printing using melt pool time series data”, Journal of Intelligent Manufacturing, https://doi.org/10.1007/s10845-020-01694-8

Testing Materials and Methods Testing Materials The testing material: Kelamayi 90# host asphalt, the technical indexes is presented in Table 1; YH-791 linear SBS modifier with white columnar, shown in Table 2.
JOURNAL OF SHAN DONG UNIVERSITY (ENGINEERING SCIENCE) , 2009,39(2):125-130.
[6] AireyG.D.State of the Art Report on Aging Test Methods for Bituminous Pavement Materials[J].
Journal of Changan University(Natural Science Edition) ,2009,29(1):1-5.
Synthetic Materials Aging and Application2007,36(2):22-28.

During this period, swine manure waste water, straw biomass and industry sugarcane molasses are used as the major materials in photobiological hydrogen production[9], however, only such small molecule organics as reducing sugar, small molecule acid contained in these materials can be essentially used in the process.
Taking swine manure waste water as example, photosynthetic bacteria is a hydrogen production method using reducing sugar, small molecule acid as materials, but the content of the materials is lower in swine manure without pretreatment, so pretreatment is absolutely necessary.
Materials and methods Experimental materials.
Journal of Applied Phycology , 2000 ,12 :291-300
JiangsuAgricultural Sciences, 2004( 6) : 146-150

Micronic and nanometric powders of BaCO3 and α-Fe2O3 were used as raw materials.
A disadvantage of microwave heating technology is that it can be heated only materials which absorb microwaves.
Sci., Vol. 32, No. 1, 2009, pp. 1–13; [2] Victor Nicoară, Iulian Ştefan, Researches regarding the barium W ferrite pyrosynthesis by microwave heating, Materials Science Forum (Volume 672), 2011, 10.4028/www.scientific.net/MSF.672.323; [3] Sorin Savu, Gabriel Mangra, Ion Ciupitu, Danut Savu, Nicolae Gherasim – Thermal field analysis in microwave sintering process of barium ferrites for ping-pong table’s sensor, Journal of International Scientific Publication: Materials, Methods & Technologies, 2010; [4] S Das, A K Mukhopadhyay, S Datta and D Basu, Prospects of microwave processing: An overview, Bull.
Sci., Vol. 31, No. 7, December 2008, pp. 943–956. © Indian Academy of Sciences; [5] Li Min Dong, Zhi Dong Han, Ze Wu, Xian You Zhang, Microwave-Assisted Synthesis of Hexagonal Barium Ferrite Powders with Nano-Particle, Key Engineering Materials (Volumes 368 - 372), 2008, 10.4028/www.scientific.net/KEM.368-372.576; [6] Qinghui Yang, Huaiwu Zhang, Yingli Liu, Qiye Wen, Microstructure and magnetic properties of microwave sintered M-type barium ferrite for application in LTCC devices, Materials Letters 63 (2009) 406–408; [7] X.
Yang, Composition and magnetic properties of M-Ba ferrite powders fabricated via sugar-nitrates process, Materials Science-Poland, Vol. 27, No. 2, 2009.

Three kinds of concrete materials appear obvious strain rate strengthening effects.
Clearly, the compressive strength of three materials increases as strain rate increases; all three materials appear strain rate strengthening effects.
Three concrete materials studied here appear obvious strain-rate effects.
Luo: Journal of Jinan University, Vol. 26 (2005), p. 117 [5] Y.P.
Tang: Key Engineering Materials, Vol. 324-325 (2006), p. 735

Near-Wall Turbulent Flows,” Elsevier Science Publishers B.V, 1993, pp. 829-848 [3] S.
Emmons, “The laminar-turbulent transition in a boundary layer - partⅠ,” Journal of Aerospace Science, 1951, vol. 018(7), pp. 490-498 [5] R.
Narasimha, “On the distribution of intermittency in the transition region of a boundary layer,” Journal of Aerospace Science, 1957, vol. 024(9), pp.711-712 [6] K.
Shaw, “Natural trnasitioin of boundary layers: the effects of turbulence, pressure gradient, and flow history.,” Journal of Mechanical Engineering Science, 1980, vol. 22(5), pp. 213-228 [10] D.
Dennis, “Simultaneous prediction of external flow-field and temperature in internally cooled 3-d turbine blade material.,” AIAA Conference, GT2000-253 [20] Z.

The reduction of bandgap for S-doped g-C3N4 materials compared to pure g-C3N4 was proved by theoretical calculation.
The obtained materials showed an improvement in photocatalytic performance.
XRD patterns of CN and x:ySCN materials Fig. 2.
The 75:25SCN material displayed a similar weight loss pattern as CN, which may be due to complete degradation of the materials.
Sigmund, Enhanced nanocatalysts, Materials Science and Engineering R 73, 1-13, (2012)

Machado, "The machinability of nickel-based alloys: a review," Journal of Materials Processing Technology, vol. 86, no. 1-3, pp. 1-16, 1999
Beneke, "Optimization of spark plasma sintering parameters of inconel 738LC alloy using response surface methodology (RSM)," International Journal of Lightweight Materials and Manufacture, 2019
Liu et al., "Equiaxed Ti-based composites with high strength and large plasticity prepared by sintering and crystallizing amorphous powder," Materials Science and Engineering: A, vol. 650, pp. 171-182, 2016
Yang, "Effect of particle size and sintering temperature on densification during coupled multifield-activated microforming," Journal of Materials Research, vol. 27, no. 20, pp. 2579-2586, 2012
Li, "Ultrafine-grained copper prepared by spark plasma sintering process," Materials Science and Engineering: A, vol. 476, no. 1-2, pp. 201-205, 2008

The main goal of this research is to contribute to a better understanding about the influence of topography on sheet gloss using a technique that show a great potential for materials surface analysis, AFM.
Fractal analysis finds broader applications in many branches of science, especially in materials science and engineering with the main goal to describe surface structure.
Materials Several coated papers, produced at lab conditions, were analysed.
Derman, On the relationships between topography and gloss, Tappi Journal, October (1990) 237-245
Santos, Methods for the Analysis of Surface Topography at Different Scales: The Case of Coated Papers, Proc. 3rd International Materials Symposium, Aveiro (Portugal) (CD) (2005).

The materials of top and bottom surfaces spread to the spaces of left and right direction and the round particles gradually becomes oval.
(in Chinese) [2] Minghua Jiao,Ping Song,Ting Xie.Research Progress in Numerical Simulations of Powder Metallurgy Compaction[J].Metallic Functional Materials,2007,14(5): 28-32.
Beijing: Science Press.2007:35-105.
Chinese Journal of Mechanical Engineering, 2007, 18(20): 2493-2496.
Tropical Agricultural Science, 2009, 29(2):10-13.