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From Fig. 3a, We can see some of the sprawling growth big grains.
It can be seen that a large number of hexagonal particles overlap each other and the particles are distributed evenly.
So, it can be seen that crystal grains grow with preferred orientation along the c-axis direction of hexagonal crystal system in the insert of Fig. 3b.

For example during DS there is an outflow of defects in the solid whether they are grain boundaries or dislocations or lattice defects.
The maximum amount of stored energy at defects and interfaces created in DS processing can be enabled by a high △μsl =(△Gsl/number of moles), wherever it happens in the solid–liquid region (s/l region) subject to second law restrictions on converting heat to work.
The kink in the PF curve indicates possible interaction between grain boundaries leading to a higher slope in the Sgen rate as a function of velocity.

Research on micro-arc oxidation coupled with electrophoretic deposition processing of HA/ TiO2 coating indicated that the number of HA particles integrated into the coating layer increased as the HA concentration increased [16] When plasma electrolytic oxidation was applied to ceria nanocomposite coating and ZrO2 nanoparticle on titanium substrate, it was reported that by increasing the concentration of nanoparticle the average size of surface roughness values was increased.
Chemical reactions are initiated next, and then nucleation and growth of the grains occur, resulting in the formation of dense particles.
Xu et al., Effect of oxidation time on cytocompatibility of ultrafine-grained pure Ti in micro-arc oxidation treatment, Surface and Coatings Technology. 342 (2018) 12–22

The interest in nanomaterials is nowadays great as the transition from coarse-grained to nanoscaled state leads to substantial changes in properties of the material.
The resulting material was a single-phase manganite powder with the crystal lattice of the orthorhombic modification and grains of 15-30 µm in size.
Note that the proportion of the specific surface area of powder particles measured by BET is close to this number (SN/SM = 5.9040 m2g -1 : 1.5722 m2g -1 = 3.75).

Fe-Ni based alloy powder was chosen as plasma cladding material, the grain size of which is 106-180 μm.
The oxide film hasn’t fall off during the isothermal oxidation which show that the heat stress is very little and grains of oxide bond well during the oxide growing.
For example, 1mol metal capacity is VM, the oxide capacity of 1mol metal generated is Vox, and the PBR is: (6) Among: M — oxide molecular weight; do — metal density; n — number of atom in oxide molecular; dox — oxide density; A — metal atomic weight.

It can be affirmed that the plasma spraying of an aqueous suspension P25 powder allows to obtain coatings where the anatase/rutile ratio and their average grains size are similar to that of the initial powder.
When the coating was elaborated from P25:EtOH:H2O suspension (reference E), the anatase ratio reaches 65.6% with an average grains size of about 30 nm.
FT-IR and XPS investigations showed that the photocatalytic performance of the aqueous suspension sprayed deposits could be attributed to a higher hydroxylation ratio of the coating surface, a lower waterweakly bonded content and the existence of a significant number of carbonate-based species on the coating surface [12].

The frist were white or lacte of grain calcites(cal-Ⅰ), with fine or short veins, developed bedding of the carbonatite, controlled by cleavage(Fig. 3A), Fromed in before the metallogenic period, irrelevated for mineralization.
The scond were white or grayish white of grain calcites(cal-Ⅱ), developed in orebody with cloddy and irregular, the calcites were dissolved and metasomated by lead and zinc (Fig. 3B), the calcites were observed that they cut each other under the microscope, and developed in the different stages of the same period, and formed later than lead and zinc (Fig. 3C).
A number of stable isotope datas form host rocks (δ13CPDB=-5.4 to 2.6‰, average was -1.8‰; δ13OSMOW=12.6‰ to 19. 4‰, average was 17‰; 87Sr/86Sr=0.711 to 0.731, average was 0.716) indicated the mineralization was closed to the basin brine relation [8]. δ13C and 87Sr/86Sr values of the first calcite were distributed close to host rocks and displayed similar charscters, they were higher than that of calcite in metallogenic period.

Therfore, such transitions are dominant in this case, and large number of Cd-based acceptor may exist in the films due to the high vapor pressure of Cd.
On the other hand, it can be think that the defect levels which originate in grain boundaries may largely exist in the films prepared on the quartz glass substrate.
Of course, the crystallinity of the films is inferior largely in comparison with when it is prepared on the sapphire substrate, and it can also be thought that many grain boundaries exist in the films.

Estimation of permeability coefficient This used multiple linear regression of method, using victory coalfield West second, open coal mine, and East second, open coal mine, and Association Xin open coal mine and East third, open coal mine in the 19 a hydrological hole of drilling information, estimates out applies Yu this area of penetration coefficient and pore of and the grain of in the value Zhijian of relationship type, and this relationship type implementation using measuring well parameter for penetration coefficient estimates of problem.
Capital three:Using multiple linear regression method for estimation of aquifer hydraulic conductivity Based on grain size, porosity and permeability coefficient of relationship between bivariate regression equation of power function type.
Numerical modeling of groundwater flow module of groundwater in head draining through the optimizer (MGO) implementation, optimization of pumping wells through the optimization of parameters such as total number of wells, pumping, to evaluate the design of underground water pumping systems in remained stable, maximum cost effectiveness.

Its microstructure consists of fine equiaxed γ grains with an average size of 20µm.
Small particles of α2 phase are present along the γ grain boundaries.
The curve obtained is relatively flat with a large variation in the number of cycles to failure at similar stress levels.