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Some works have been done to study single crystal and polycrystalline in micrometer grain size range of Tb-YIG [9, 10].
The results were compared with the Joint Committee on Powder Diffraction Standard (JCPDS-ICDD; number 43-507) for pure YIG.
The Fe2O3 and YFeO3 peaks were confirmed by JCPDS number 39-1346 and 39-1489 confirm that they are Fe2O3 and YFeO3, respectively.

The most vulnerable region is normally the course grain HAZ region adjacent to the fusion boundary, which sometimes fails by cleavage fracture at the low design temperatures typical of northern pipelines.
Although great strides have been made in fracture control, a number of improvements are still required.
A number of candidates have been suggested, among them the Tstress, Q-parameter, and A2.

The number and position of the strain gauges in the test specimens is shown in Figures 3 and 5.
properties of the concrete mixture Age of concrete 18 hours 42 hours 66 hours 14 days 28 days cube compressive strength [MPa] 38.3 49.2 54.4 61.7 65.0 comp. strength – Schmidt – type R [MPa] 35.0 --- --- --- --- comp. strength – Schmidt – type N [MPa] 38.3 41.5 46.0 49.2 51.0 tensile splitting strength [MPa] 2.80 3.41 3.63 3.90 4.06 flexural tensile strength [MPa] 3.39 4.08 4.31 4.89 5.01 Table 3: Average shrinkage in individual specimens Age of concrete 1 day 3 days 7 days 36 days 68 days 91 days shrinkage [‰] specimen thickness 75 mm 0.52 0.58 0.62 0.83 0.87 0.90 specimen thickness 125 mm 0.48 0.51 0.54 0.70 0.74 0.75 specimen thickness 150 mm 0.40 0.41 0.44 0.57 0.62 0.63 specimen thickness 200 mm 0.37 0.39 0.42 0.55 0.58 0.60 The amount of cement is normally increased in order to achieve an early concrete strength needed to manipulate the prefabricate and in order to improve the workability of the concrete to which cement contributes significantly together with other fine-grained
Testing concrete in structures – Part 2: Non-destructive testing – Determination of rebound number.

The results show that carbon doping can be introduced effectively to replace part B atoms of MgB2 lattice to form a new flux pinning centers, and doping nano-SiC can further refine the grain of MgB2 and introduce nano-impurities.
From the area of the diffraction peak, both in the samples, MgB2 phase have appeared in large numbers.
This indicates that an effective carbon-doped was formed in the sample of sugar-doped high temperature sintering, the number of C went into the lattice of MgB2 and replaced part B, led to the lattice parameters of MgB2 was reduced, the peak position shifted to a high angle.

D is the drained stiffness matrix of the soil, ε is the soil skeleton strain, δ is the Kronecker delta, F is the vector of body force per unit volume, af is the apparent compressibility of the fluid, cf is the compressibility of the fluid, cs is the compressibility of solid grains, c is the drained compressibility of the solid skeleton and η is the effective stress parameter. u stands for the displacement vector of the soil skeleton and pf is the pore fluid pressure.
The smoothed strain-displacement matrices B1i can be expressed explicitly as B1i=bix100bix2bix2bix1 (8) in which the components are obtained by summation over all the quadrature points along the segments of the boundary of each smoothing domain, bil=12Ωkm=1 NsegLmkn=1 Ngauwn ϕixmn nlxmn (l=x1,x2) (9) where Nseg is the number of line segments of the boundary Γk, Lmk is the length of the mth segment of Γk, nl represents the component of the unit outward normal to the corresponding segment of Γk and Ngau is the number of quadrature points used in each segment of Γk, which is taken two for both CSPIM and CSRPIM in this study. xmn is the nth quadrature point of the mth segment of Γk, and wn is the Gauss integration weight of the corresponding quadrature point. ϕixmn is the shape function value for node i at the point of interest xmn.

However, in a number of papers [11–13, 20] reports about significant acceleration of the process with the use of ultra-fine milling, acceptable for various materials.
After re-milling, the material was washed, dried, and then the effect of grain size on the rate of POX leaching was investigated.
Acknowledgements Research have been performed at Russian Science Foundation (RSCF) sposnorship (Project number: № 18-19-00186).

The results showed in Table4: Table 4: The results of hydration heat test ID Peak numbers Time to peak The highest heat release rate（J/gH） The heat amount（J/g） 24h 48h 72h 1 1 13 9.7 172 234 259 2 2 15/35 4.66 81 164 196 3 2 14/34 4.70 87 175 210 4 2 12/28 5.07 90 158 185 5 2 13/25 4.77 99 155 181 6 2 12/25 4.33 86 141 167 7 2 10/24 4.41 83 135 151 8 2 9/27 3.8 75 128 155 9 2 12/30 2.71 58 108 133 10 2 15/32 2.33 42 90 113 From Table 4.
Table 5: The results of shrinkage rate(%) number 1 2 3 4 5 6 7 8 9 10 1 0.03 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.01 0.02 3 0.05 0.03 0.03 0.02 0.03 0.03 0.02 0.02 0.03 0.02 7 0.06 0.04 0.04 0.03 0.04 0.04 0.02 0.03 0.03 0.02 14 0.07 0.06 0.06 0.03 0.05 0.05 0.03 0.05 0.05 0.03 28 0.08 0.06 0.06 0.04 0.06 0.06 0.04 0.05 0.05 0.03 56 0.08 0.06 0.06 0.05 0.06 0.06 0.04 0.05 0.05 0.04 90 0.09 0.07 0.07 0.05 0.07 0.07 0.05 0.06 0.06 0.04 180 0.11 0.09 0.08 0.07 0.09 0.07 0.06 0.08 0.07 0.06 From Table 5, it can get that the biggest rate of the 180th self-construction is 0.11% of ID1.
The Grain Size of Mineral Admixtures Impacts on Mechanical Properties of Cement Paste and High-Performance Concrete Material.

The formation of nitride is advantageous for the performance of HVAS surface due to a large number of nitrogen forming elements in the presence of HVAS, but it is rarely reported in the field of nitriding of HVAS.
The presences of a large number of carbide-forming elements, such as chromium, molybdenum, vanadium, lead to the formation of hard carbide in the martensite [1].
It can be seen that the MC carbides have different morphologies, such as rod and globular morphology, which is distributed in the center of grains.

The number of withdrawn of natural minerals very often are so great that it leads to a violation of the natural landscape, changing of wild animals migration routes, habitats of flora distortion and a shift in the ecological balance of natural ecosystems as a whole.
Tests pigments - fillers offered by us (sample number 1 and 2) were investigated in the conditions of a production laboratory of "Quil paint factory", Belgorod, according to the following parameters: dispersibility, milling degree, relative viscosity, hardness, drying time, adhesion and elasticity.
Grain size, phase and oxide compounds of these wastes are presented in Fig.4, Table 2, 3.

Basic classification for resin bond in abrasive products Resins for fixed abrasive products are mainly phenolic resin, polyimide, epoxy resin, polysulfone resin, etc. (1) phenolic resin includes ordinary phenolic resin (such as number 2123, etc), modified phenolic resin (such as boron phenolic resin, new phenol resin, etc) to meet special requirements; (2) polyimide resin has high temperature strength, corrosion resistance, wear resistance better than phenolic resin, but it is expensive; (3) epoxy resin.
It is usually as bond to manufacture fine-grained polishing wheel and other special abrasive tool[8].
However phenolic resin has its own limitations, the domestic and foreign scholars develops a number of modified phenolic resin research.