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It should be noted that volcanic soils present varied characteristics, they are naturally mixed with other materials, depending on the climatic and topographic factor.
Problem soils have specific characteristics that are different from other materials.
Cold Regions Science and Technology Vol. 170 (2020), 102926
Journal of Materials in Civil Engineering Vol. 32(7) (2020), 04020177
Journal of Materials in Civil Engineering Vol. 32(5) (2020), 04020087

The planar surface dimensions, thickness, elastic modulus of the materials, and Poisson's ratio are as shown in Table 1 [20]. 2.2.
Journal of East China Jiaotong University. 30(2013)33-36+77
Journal of Zhengzhou University (Engineering Science). 35(2014)120-123+128
Hunan Communication Science and Technology. 39(2013)4-6+27
Journal of China & Foreign Highway. 35(2015)213-217.

Preparation and performance testing of chitosan-ibuprofen sustained release microspheres Qin Wang1, a 1 School of Chemistry and Material Science, Xiaogan University ,Hubei,China alouisehappy2003@yahoo.com.cn Keywords: Chitosan;Ibuprofen;Mcrosphere;Emulsion crosslinking method;Release curve Abstract.
These characteristics make preparation of chitosan drug-loading microspheres become an ideal material [1].
The main purpose of this study is the preparation of chitosan micro- spheres provides new drug carrier materials under different conditions.
Material and Methods Materials Experiment instrument:The anylytical blance from Beijing,the instrument systems Co.
Journal of Materials Science：Materials in Medicine，2008，19(1)： 305-310

It was because that the nitrogen solubility decreased and became the over saturation condition when the materials quenched by water at high temperature.
At 1100 , the fracture of the material is toughness fracture mode and the elongation ratio is the best.
Materials Science and Engineering.Vol.A420(2006).p. 26-33
Journal of Shenyang University of Technology., Vol 25(2003). p. 193-195.
Mechanical properties of engineering materials, edited by Machinery Industry Press (2003) (In Chinese)

Technology experimental study The production methods of magnesium sulfate monohydrate are different according to different raw materials, mainly used mineral or briner as raw material.
Some byproduct, such as sodium sulphate preparation mother liquor, boric acid preparation mother liquor, high temperature salt after potassium extraction from brine, have been used as raw materials to prepare magnesium sulfate monohydrate.
Auxiliary materials used in sieving method, such as dispersants, washing brine, can be obtained from the bittern chemical plant, the technological process is simple and the product quality is stable.
Guo, Recent trends of application of sulphate fertilizer, Jiangsu Salt Science & Technology. 3 (2002) 4-5
Zhu, S.L. liu, et al., Study of High Temperature Crystallization Kinetics of MgSO4-H2O System, Journal of Shenyang Institute of Chemical Technolgy. 13 (1999) 147-150

Microstructure and Mechanical Properties of Equitomic CoCrFeCuNi High Entropy Alloy Seung Min Oh, Sun Ig Hong* Department of Materials Science and Engineering, Chungnam National University, Daejeon, 34134, Korea *sihong@cnu.ac.kr, dhtmdals0928@naver.com Keywords: High entropy alloy, CoCrFeCuNi, Microstructure, Mechanical properties Abstract.
Introduction High entropy alloys (HEAs) have become a thriving category of advanced materials because of their high strength, excellent ductility and good corrosion resistance.[1-3].
Raw materials were melted in a water-cooled copper mold under a high purity argon atmosphere.
Acknowledgments This research was supported by the Future Material Discovery Program of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (MSIP) of Korea (2016M3D1A1023532).
[12] KH Lee, SI Hong, Journal of Materials Research 18 (2003) 2194-2202

Journal Citation (to be inserted by the publisher ) Copyright by Trans Tech Publications Effect of Inorganic Polyphosphate on Periodontal Regeneration T.
Materials and Methods Separation of Long Chain Poly(P).
Since poly(P) with a chain length of more than 20 phosphate residues is likely to be effective in promoting fibroblast growth and FGF stabilization, we prepared long chain-poly(P) with chain length ranging from 20 to 100 phosphate residues and remove the short-chain poly(P) by ethanol precipitation as described in Materials and Methods.
For in vivo experiments, a mixture of 1% poly(P) with 1% CMCor poly(P)-collagen ion complex (see Materials and Methods) was used.
We conclude that poly(P) might be a good material for treatment of periodontal diseases.

Introduction Surface coated steel sheet ranks amongst the key materials for a great number of applications, in particular in the construction industry as exterior, interior, and structural materials [1].
Experimental Materials.
So the optimum dosage of BYK-055 was 0.5% of the base materials.
The conditions for preparation of coating for colored steel sheet using silicone-modified polyester resin were followed: urea-formaldehyde resin as crosslinking agent, 20%-30% (m/m) of the organic silicone modified polyester resin; mixed pigment: titanium dioxide + zinc phosphate + zinc borate (2:1:1, m/m), pigment binder ratio: 2.0-2.5 (m/m); catalyst, BYK-450, 3-5% of the total base material; defoamer BYK-055, 0.5% (m/m) of the total base material; dispersant BYK-163, 5% (m/m) of paint mass; organic silicon surface additive that strongly reduced the surface tension, BYK-310, 0.2% (m/m) of the total base material.
Alistair: Polymers Paint Color Journal, vol. 198 (2008), p. 32 [5] S.S.

Material properties Raw materials All materials used in the experiments are produced in China.
Acknowledgement This study is financially supported by Natural Science Foundation of China (Grant NO. 51278126) and Fujian Provincial Department of Education projects (Grant NO.
The Interface Problems of Cement-based Composite Material.
Journal of Wuhan Building Material University, 1982(2)
Modern Concrete Technology, Shaanxi Science and Technology Press, Xian, 1998

The chemical compositions and heat treatment of the material are listed in Table 1 and 2.
If the dimple size is larger, the material has better plasticity, while if the dimple is smaller, the elongation and contraction rate of the material are smaller.
Taleff, Influence of grain size, solute atoms and second-phase particles on creep behavior of polycrystalline solids, Materials Science and Engineering. 322 (2002) 89-99
Ryadkov, A new engineering method for prediction of the fracture toughness temperature dependence for RPV steels, International Journal of Pressure Vessels and Piping. 80 (2003) 817-829
Ma, Strain rate and temperature effects on the critical strain for Portevin–Le Chatelier effect, Materials Science and Engineering A. 527 (2010) 5175-5180