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The crystallites are composed of smaller polycrystalline grains; grain boundaries are amorphous, once they are brought to a high enough temperature they melt.
Again, in bulk form of Hummers method grown GO samples, the structure, surface, orientation and number of the layers have shown a close relation with the graphene content, functional group composition, preparation conditions and further purification (eg, centrifugation [20]) of the synthesized samples [21].
A number of the layers was calculated from the ratios of G, D and 2D band peak intensities ID/IG and IG /I2D.
Sample number Temperature, [°C] G- band D- band 2D- band 1 25 9565 8630 11147 2 30 4711 4106 6375 3 35 10841 9685 13656 4 40 8871 8046 9542 5 45 4268 3900 4161 6 50 15516 13752 21012 Table 2.
Sample number Temperature, [°C] G- band D- band 2D- band 1 25 1573 1324 2918 2 30 1582 1324 2943 3 35 1582 1334 2918 4 40 1582 1324 2922 5 45 1582 1324 2930 6 50 1587 1324 2951 Table 3.

In the close-packed cubic structure, the oxygen ion is located at the center of eight little cubics in the unit cell and is said to have a coordination number of 4.
Forming nanocrystals could be attributed to the fast velocity of synthesis reaction and there is not sufficient time for grains to grow completely.

The damage characteristics: stress exceeds the material fatigue limit, after a certain number of cycles, fatigue failure occurs, many pits appear at the surface. 2.1.4 Erosion wear Erosion is one form of wear that fluid containing solid particles impact solid surface, damage the surface.
At the same time, form of broken tooth and arrangement are special designed based on actual requirements, bulk materials are one-time gnawed in, the grain which is smaller than the asked size go directly though the crushing cavity.

The saturated cohesive soil particles are treated as composed of two parts : the matrix particles (particle size <0.075mm) and the strengthen particles (particle grain Path> 0.075mm), the matrix particles are linked entirely homogeneous with pore water and the strengthened particle uniform distribute in them.
Make the length of crack ring around the strengthen particles , the coordinated crack density corresponding to the strengthen particle is: (8) In case of a single strengthen particle size ,the coordinated micro-crack density of soil is: (9) Among them is the total number of particles; is the particle volume fraction; is a single particle volume, assuming it spherical particles, ; is the particle weight,by substituting（8） (10) Yield stress substitute (10) into (5) were: (11)

Additionally, we carry out water settlement analysis and find that -0.037mm grain size accounted for 31.3%, lead and zinc contents were 28.13% and 21.26%, the ore has high content of clay , so is difficult to recovery lead and zinc.
From the mineralogical studies we can see that the ore is oxidized , earthy structure, vein structure, a small number of massive structure.

If the mechanical energy is used to drive machinery, such as for grinding grain or pumping water, the device is called a windmill or wind pump.
The higher of Turbulence kinetic energy value is good because it can produce large number of blade rotation to generate more electricity.

Therefore significantly reduces the possibility of the grain growth.
As the number of points of computational mesh of this axis is fixed at this step leads to the change and the need to consider the calculation grid deformations in equations (2) - (5).

The main mechanical properties of high-chromium cast iron are; the tensile resistance is about 490Mpa, and Brinell hardness number ranges between 290-340, and it has a good resistance to shocks.
Through the study of the microstructure of the alloy it’s observed the regular distribution of the graines as a result of heat treatments and the presence of homogeneity in the grain size. 4.

The proceedings contain contributions presented at DIMAT-2017 in the following fields: -Bulk diffusion and reactions; -Computer simulations of diffusion and diffusion-controlled processes; -Diffusion and surface diffusion in thin films, nanoparticles, and grain boundaries; -Diffusion in solid-gas systems; -Diffusion in materials processing.
Organizing an international conference entails dealing with a number of large and small problems and unexpected situations.

A number of samples of the two glasses were cut to a suitable size before milling. 2.
In contrast, β is found to be small at 2θ =45 o, in figs. 2c and 4c indicating large grain size.