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The corundum is made in Henan, and we choose two grain size shown in Table 2.
Its particle size is 400 mesh numbers.

Mix compositions were prepared taking into account the grain size distribution of raw materials, i.e. the grading curves.
Finely dispersed pozzolanic additives play a significant role as microfillers and supplementary cementitious materials, decreasing the number of fine pores and increasing compressive strength of concrete up to HPC data.

U1t=N2SmdJdt+N2S2∙μ0dHdt (3) U2t=N2S2∙μ0dHdt (4) Where N2 : number of turns in the secondary and compensating coils, Sm : material cross sectional area and S2: total cross sectional area.
Figure 4 shows hysteresis loops from a strip of Fe-(3%wt)Si or M130-27S grain oriented electrical steel.

At the same time, polystyrene particles decompose at the high temperature to leave a large number of closed porosity with pore size 2-3mm, which make the red mud sintered brick has good thermal insulation performance.
The fine particles with high solubility and the convex portion of the general surface of the particles are dissolved into the liquid, and transfer through the liquid phase to another surface of the coarse particles with low solubility and settle down, until the grain growth and body pyknotic[4].

Introduction The production yield of superalloy precision casting part is 20%~30%, and for the complex shape part this number comes to only 10%.
Domestic researchers have carried out the investigation on equi-axed grain and parts of directionally solidified superalloy, and also have got some progress.

Analysis of a number of the microprisms shows that the average length and diameter of these microprisms are about 12 and 5 μm, the uniformity of size distribution of the product is well.
Another NaYF4 crystal nucleus shrink to disappeared, then grain fall off, turn to hexagonal prism crystals [9].

Applications that require fine-grained event notification can place hooks in the User VM that send hook events to the Security VM.
This struct contains a unique identifier for the request and information about the hook event (e.g., hook number, associated Windows handle, or process id).

Experimental materials include E-51 bisphenol A epoxy resin, curing agent T31, nano filler SiO2，with average grain diameter 15nm.
In the stretching test, crystallization and a considerably number of bubbles are observed in the adhesives with the addition of nano materials and, thus the structural adhesives is heated to 100˚C in order to avoid any possible crystallization and to reduce its viscosity.

Microstructure formation takes place either under the external mechanical stimuli or the influence of colloid-chemical and physicochemical processes, occurring during the hydration of the binder (dispersion of cement grains, their dilution, followed by coagulation and crystallizing, etc.).
Table 1 - Types of cement systems and temperature conditions of hardening Sample Number Type of Cement System Hardening Conditions, ºС 1 Dry mortar for adhesive and base plastering compositions ETICS +22 2 0 3 -10 4 Dry mortar, modified PEG 6000, for adhesive and base plastering compositions ETICS at temperatures down to -10 º C +22 5 0 6 -10 Integral dependence on the distribution of pore volume, relative to radii of the test systems, is shown in Fig. 1.

For getting higher photocatalytic activity, the catalyst should have larger number of free charge carriers with higher life time and large surface area.
The grain size reduction leads to an increase in the force constants because of the decrease in the interatomic distances.The Raman bands shift towardsa higher wavenumber due to the increasing force constants.