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Jeong [11] has studied the effect of finishing temperature on microstructure and texture of cold rolled strip and demonstrated that with increasing the hot rolling temperature, the material structure becomes more uniform and fine-grained.
It is known that increasing the finishing temperature leads to more uniform and fine-grained structure.
Effect of Number of Rolling Pass.
To find out about the relationship between the number of rolling passes and the surface roughness, the values of surface roughness (Ra) have been plotted against the number of rolling passes as shown in Fig. 4.
It can be seen that with increasing the number of rolling passes the surface roughness is reduced.

Because of the large cross-section, if the cooling rate is too low, the role of grain refinement will not be achieved, and if the cooling rate is too high, the surface of the bearing steel bar is easy to form martensite which can cause surface crack [1, 2].
Results of numerical simulation Influence factors on temperature field uniformity because of the diameter and the number of nozzles.
When the total areas of the nozzles are invariance, the influence on temperature field uniformity is analyzed as the variation of the diameter and the number of the nozzles.
With the increased number of nozzles, the heat transfer is affected between the steel bar and the cooling water due to the interference between the nozzles.
(1)With the increase of the number of the nozzles, the speed of the temperature drop will be slower and the cooling uniformity will be better, but when the number of the nozzles increase to a certain value, the strong interference between the nozzles will influence the cooling uniformity.

Thermal cycling was performed in air by repeatedly moving the Cr-N/steel samples in and out of a furnace for a set number of cycles.
Number of cycles, time of permanence of the sample inside and outside the furnace and Tsetup furnace were controlled by a dedicated software.
The number of cycles was fixed to 120 for all the tests, corresponding to a 6 hour-duration per test. 2.4.
Cr-N grains appeared elongated.
This explanation is consistent with the waviness change of orientation from grain to grain in the steel.

The wine quality is generally evaluated by hired a number of qualified members of liquor.
We assume that the number of wine is , and the number of physiological indexes of wine grape is .
Here represents number physiological indexes value of grape samples
Characteristic roots correspond to the number of main components , is integer.
So we could ensure the number of the principal components.

Each experiment was performed separately according to % of water and condition (loose or compact) for a total of 25 numbers of data.
Continuous % of water was added and tested until 25 number of test for each experiment.
Hence, it was proved that the soil tested was fine grain soils results a low resistivity value especially in wet condition.
According to [19,20], resistivity value was highly influenced by pore fluid and grain matrix of geomaterials.
The Influence of Soil Moisture Content and Grain Size Characteristics on its Field Electrical Resistivity.

The number one curing needed the Si3N4 preform being immersed in borazine with high N2 pressure of 1 MPa.
The number two curing demanded a high pressure atmosphere of N2 with 1 MPa, while the number three curing needed pressureless atmosphere of N2.
The flexural strength of the composites decreases from 136.29 MPa (curing method number 2 and no starch are adopted) to 25.53 MPa (curing method number 3 and 20 wt.% starch are adopted).
The pyrolysis BN adheres on the Si3N4 grains randomly with all directions.
When curing method 1 is adopted, only small pores can be found and the layered pyrolysis BN bonds the Si3N4 grains closely (Fig. 3a).

The films seem to have grain like structures on annealing which are expected to help the gas sensing properties of the V2O5 films.
The samples annealed at 400 o C show nanostructured grains and hence expected to have better sensing properties, which have been tested using ammonia and ethanol.
It can be observed that the surface is covered with larger number of grain like structures with dimensions around 80-100 nm.

The TEM results indicated that a large number of dislocations pile-up formed at lath subgrain boundary.
A large number of second phase precipitates are distributed on the ferrite matrix, which are mainly cementite.
The original austenite grain boundaries can be observed in the SEM photographs.
Most of the tempered martensite in the original austenite grains still showed acicular.
The white dots are cementites which are distributed in large quantities in the original austenite grain, as shown in Fig. 1 (b).

The script-like or block-like MC carbides and the grained M6C carbides are located in interdendrite and grain boundary.
Fig. 5b shows the grain display at the same location of the two vanes.
Vane 20# display grain boundary, indicating that there is no macro overtemperature area.
At point 5, about 26.7% (vol%) coarse γ´ precipitates remained in dendritic region (Fig. 6e), and the number was 40.7% (vol%) at point 6 (Fig. 6f).
The bound between grains or dendrites will thus be degraded, reducing the strength and plasticity of the alloy significantly.

Thickness of the layer may vary from several nanometers to microns, while number of the layers “stacked” in one foil may achieve several thousands.
It was revealed that the “hot + cold” rolling technique facilitates the formation of nanolaminate bimetal composites with layer thickness down to a few nanometers, and number of layers up to tens of thousands.
This model assumed that the grains of solid products does not form permanent layer, therefore, liquid state diffusion takes place in the gaps between the grains.
It is evident that the solid product consists of separate spherical nanosized grains, which doesn’t form continuous solid layer.
Fully reacted NiAl with grain size ~500nm was found in the compressed region, however, the exothermic reaction did not become self-sustain and did not propagate throughout the foil.