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Introduction Nano-CaCO3 is one of the earliest development inorganic nano-materials.
The superiority of nano-materials cannot be obtained, so superficial modification is needed to improve surface function of nano-CaCO3[1,2].
Journal of East China University of Science and Technology (Natural Science). 2005(2)
Journal of Beijing University of Chemical technology. 2004(4)
Journal of Materials Engineering. 2006(4).

The existing LCD parts use some harmful materials like thinner, hardener or retarder, so in the color-coating process, the workers should wear a mask, a pair of gloves and a mask in order to minimize such materials' harmful effects on the body.[6,7] However, such preventative devices somewhat reduces the harmful effects, but not eliminate them at all.
Nielsen : Solar Energy Materials and Solar Cells, Vol. 93(2009), p. 422-441 [4] MEREDITH, Steven A, U.S.
Thornton : Journal of Vacuum Science & Technology.
[7] Mumtaz A, Class W.H. : Journal of Vacuum Science , Vol. 20(1982), p. 345-348 [8] P.A.
Hintermann : Thin solid films, Vol. 154(1987), p. 333-349 [9] THORNTON, John A.; HOFFMAN, David W. : Journal of vacuum science and technology, Vol. 14(1977), p. 164-168

The Influence on the Axial Magnetic Field Distribution by Materials Material is an important factor to affect the magnetic field.
The relative permeability of these materials is shown as Table 1.
According to the result, the materials of magnetic blocks have large effects on the axial magnetic distribution, and the materials can be changed to obtain the required distribution of axial magnetic field.
In the Fig.10, the axial magnetic distribution of GMM is described with different output shaft materials.
Lu: Chinese Journal of Mechanical Engineering, Vol. 43 (2007) No.8, pp.12-16.

Introduction In recent years, composite materials are widely used in gear, bearing and other parts.
The gears made of composite materials have entered stage of industrial application.
The modal analysis of this kind of composite materials is of great significance to its future research.
Consequently, modulus ratio can be viewed as one of important parameters affecting the natural frequency of different materials.
Meng: Journal of Beijing Technology and Business University (Natural Science Edition) Vol. 26 (2008), p. 27-30, in Chinese

Introduction Bi˚Char is a kind of carbon-rich materials obtained from biomass as pyrolysis pr˚Cess in a low oxygen or oxygen-depleted environment [1].
Materials and Methods The two kinds of bi˚Char used were obtained from different suppliers and both commercially available.
Spokas, Journal of Analytical and Applied Pyrolysis, Vol. 93, (2012) pp. 77-84
Hauggaard-Nielsen, European Journal of Soil Science, Vol. 62, (2011) pp. 581-589
Parikh, Journal of Agricultural and Food Chemistry, (2013) [11] D.

Modeling of Layering Ceramic Shell Mould, Applied Mechanics and Materials. 232 (2012) 548-552
Effect of moisture upon mechanical properties of ceramic moulds during high pressure steam dewaxing, Material Science and Technology. 19 (2003) 907-914
Shrinkage cracking of fiber reinfroced concrete, ACI Material Journal. 87(1990) 138-148
Key Engineering Materials. 471-472 (2011) 922-927
Material Science and Engineering, 8 ed, John Wiley & Sons Inc., 2011.

However, utilising these materials depends on the manufacturers' specifications as these materials provide different advantages and limitations.
Melting point, solidus, and liquidus of research materials.
Liang, "Review Functional materials of porous metals made by P/M, electroplating and some other techniques," Journal of Materials Science, vol. 36, pp. 5059-5072, 2001. https://doi.org/10.1023/A:1012483920628
Xiong, "Preparation of nickel porous materials by sintering nickel oxalate and sodium chloride after blending and reduction," Journal of Materials Research and Technology, vol. 9, no. 3, pp. 3149-3157, 2020. https://doi.org/10.1016/j.jmrt.2020.01.060
Coughlan, “Microstructure and strength properties of austenitic and ferritic stainless steel when brazed with Ni-Cr-P amorphous brazing foils,” Materials Science, 2015.

Experimental The raw materials for experiment are pure Mg, Mg-30%Gd, Mg-30%Y and Mg-30%Zr (mass fraction) master alloy.
Materials Science Forum, 2003, 419-422:3-20
TMS-AIMS(Journal of Metals), 1952, 194: 409-420
Metallurgical and Materials Transactions, 2002, 33A (3):5 67-574
Transactions of materials and heat treatment, 2011, 32 (5): 110-115.

Alberto Lamego, 2000, 28013-602, Campos dos Goytacazes, Brazil 2Military Institute of Engineering - IME, Department of Materials Science, Praça General Tibúrcio, 80, Praia Vermelha, Urca, RJ, CEP 22290-270, Urca, Rio de Janeiro, RJ, Brazil.
Chemical composition of the raw materials used (wt.%).
Construction and Building Materials Vol.102 (1) (2016), p. 769
Kabeer: Materials Today: Proceedings Vol. 4 (9) (2017), p. 9635
Lopes: Construction and Building Materials Vol. 45 (2013), p. 1

Relation between surrounding rock displacement and its size of shaft on its self-weight body force condition Qinghai Deng1,2,a, Jiamo Xu3,b, Fengshan Ma3,c, Chunhe Yang4,d 1 College of Resources and Environment Science, Chongqing University, Chongqing 400044,China 2College of Geological Science and Engineering, Shandong University of Science and Technology, Qingdao 266510, China 3Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029,China 4State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071,China adqh2004@163.com, bxujiamo9999@sina.com.cn, cfsma@mail.iggcas.ac.cn, dchyang@whrsm.ac.cn Key words: Self-weigh t body force, Similarity theory, Dimensional analysis, Displacement Abstract: We derived the relation between surrounding rock displacement of shaft prototype and that of model on its body force condition of self-weight based on the similarity theory.
In practice, under the condition of the same material parameters, we designed 5 simulating schemes, which corresponded respectively such state as the radius of the shaft is 1m, 2m, 3m, 4m, 5m and 6m.
Potvin: International Journal of Rock Mechanics and Mining Sciences, Vol. 40, issue 1, 95-l11,2003 [2] G.
Potvin: International Journal of Rock Mechanics and Mining Sciences, Vol. 40, issue 1,113-125, 2003 [3] Wenxiu Li, Shengtao Zhao, Xuli Liang and Lanfang Dai: Chinese Journal of Rock Mechanics and Engineering, Vol. 25, issue 1,74-78, 2006 (in Chinese) [4] Henglin Lu and Guangxin Cui: JOURNAL OF CHINA UNIVERSITY OF MINING & TECHNOLOGY, Vol. 28, issue 6, 539-543,1999 (in Chinese) [5] Laisheng Jing: Journal of China Coal Society, Vol. 26, issue l,49-53,2001 (in Chinese) [6] Zhishu Yao, Junjie Yang and Wenmo Sun: Journal of Coal Science & Engineering, Vol. 9, issue 1, 95-99,2003 [7] Rejeb and Bruel D.: International Journal of Rock Mechanics & Mine Science, Vol. 38, issue 1,17-29,2001 [8] Jiamo Xu, “Rock mass movement and deformation under the conditions of open excavation” , in Proc.
[9] Jiamo Xu: Journal of Engineering Geology, Vol. 5, issue 4, 340-345,1997 (in Chinese)