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It is well known that the precipitation of the chemical compound phases on the grain boundaries leads to forming precipitation hardening effect.
At this temperature the chromium atom difussivity can start to be more significant and the number of localized CrN and CrC precipitation phenomena or called as sensitization phenomena may occur resulting in decrease in corrosion resistance.

Table 1 Technical indexes of raw materials Raw materials Particle size(nm) Specific surface area(m2/g) TiO2 30 - TiO2 40 - TiO2 50 - TiO2 60 - Ordinary carbon black - 58.664 acetylene carbon black - 138.921 Table 2 Prescription of synthesizing TiC number formula 1 TiO2 (30 nm) Ordinary carbon black 2 TiO2 (40 nm) Ordinary carbon black 3 TiO2 (50 nm) Ordinary carbon black 4 TiO2 (60 nm) Ordinary carbon black 5 TiO2 (30 nm) acetylene carbon black 6 TiO2 (40 nm) acetylene carbon black 7 TiO2 (50 nm) acetylene carbon black 8 TiO2 (60 nm) acetylene carbon black The preparation process Synthesis conditions: nano powders were synthesized viathe continuous synthesis furnace which has the independent intellectual property rights at the synthesis temperature range between 1100℃, 1200℃, 1300℃ and1400℃.
Measurements The purity and the grain size of the synthesized nano powders were characterized by the neo-confucianism D/Max-III full-automatic X diffractometer (Japan), and the neo-confucianism D/Max-1200 tape automatic X-ray diffractometer (Japan), respectively.

Therefore, when the grid is divided in the scanning area and its vicinity were regional breakdown, but far away from the region where the grid can draw too thick, which can significantly reduce the number of units, saving computing time.
After heating, cooling system make the workpiece temperature drop rapidly,which make the surface of the metal grains did not grow up, which can get a uniform dense surface structure.

In contrast, the DCPD signal reflects an average position over the crack front which samples a number of grains and therefore is less affected by the local microstructure.

Although experimentally many occurrences of pillar-to-pillar collapse have been observed, other modes were also present in significant numbers, indicating a strong sensitivity of the pattern collapse to slight process variabilities.
Mielniczuk, Rupture of an evaporating liquid bridge between two grains, Acta Geophysica 62(5), https://doi.org/10.2478/s11600-014-0225-6

Both scientific and industrial research pursuits are dedicated to the precise and comprehensive modulation of microstructural attributes (density, imperfections, grain dimensions, surface texture, crystal alignment, and an array of additional parameters).
The NPT (isothermal-isobaric) ensemble, i.e., the number of atoms N, the pressure of the system P, and the temperature T are held constant.
Furthermore, microstructural effects, including grain boundaries or defects within the material, contribute to the distribution of stresses within the Al structure, leading to diverse responses in distinct directions. 2.2.
The underlying algorithm involves determining the number of particles inside the spatial interval r to r+Δr.
The number of Fcc structures starts to decrease and continues this trend until the deformation reaches 0.174.

Experiments with Central Composite Face-centered (CCF) design were performed to save the number of experimental runs.
Sand Type Roundness AFS Grain Size %SiO2 pH Brightness (Lux) Phenolic Resin Type Gelation Time (sec) Flow Length (mm) Shape S1 (40%) 1.32 55-60 93 7 44 R1 (70%) 29 48 Needle S2 (30%) 1.18 99 7 78 R2 (30%) 35 100 Needle S3 (30%) 1.25 99 7 75 Methods.
Response surface methodology with central composite design was applied since it helps save the total number of experimental runs and can estimate the interaction effects.
Second, experiments with Central Composite Face-centered (CCF) design were performed to save the number of experimental runs and inverstigate the interaction effects.

Connected with the outlet of the spindle, the injection head flushing out pollutants rotates close to the entrance of each heat exchange tube with the rotation of spindle .This is the process of rotating wash. 1-heat exchanger bundle; 2-spindle outlet; 3-tube plate; 4-injection head flushing out pollutants; 5-spindle; 6-rotary joint; 7- large sprocket; 8-small sprocket; 9- electric motor;10-reducer; 11-high pressure sewage pump; 12-head; Fig.4 function principle of the HRF heat exchanger The design calculation of the flushing scheme for the heat exchanger The root number of heat exchange tubes flushed in turn is closely related with the cost of the pump, too big numbers can cause unnecessary waste of the initial investment, but too small numbers will increase the difficulty of rotating flushing technology.
pump efficiency (%); -theory shaft power (kW); -electrical power (kW);  -electricity consumption (kWh). ,, are substituted into equation (1): . the coefficient of friction resistance is calculated by, take the equivalent grain roughness height，; so, , take the import and export friction resistance of the heat exchanger , and take the local resistance coefficient , so ＝1.0+1.0+2.5＝4.5, substitute , , , , into formula (2) (3), so, , .
In theory, the less the rinsing number of heat exchange tubes the less the increase of the initial system investment, but limited by the process technology, the rinsing root number has a lower limit.
As in the sewage source heat pump system the sewage heat exchanger has the characteristic of large flow and low temperature, therefore the number of heat exchange tubes are relatively large, generally in the 400-700 range.
But because the tube plate angle corresponding to the injection head flushing out pollutants can not be too small in this program, otherwise the process is impossible, generally the angle should be greater than 10°, so the minimum number of heat transfer tubes corresponding to the injection head flushing out pollutants should be between10-20.

- is the number of coordination spheres for interatomic interaction, I.
The numbers are also called coordination numbers.
It is assumed that any atom from the first coordination spheres can take the place of a vacancy, and the number for such atoms is , where are coordination numbers.
Time is measured by the number to elementary diffusion events.
Grinkevich, The influence of grain size on low-stability pre-transitional structural-phase states of NiAl intermetallide, Russ.

The largest number of damages from the earthquake was registered in the buildings built of stone and clay brick blocks.
In the period 1990-2000, because of the wars in the region and the imposed economic sanctions, a large number of individual objects are built of concrete block or clay brick block, that do not have the minimum required compressive strength.
After the earthquake of 1979, the large number of stone masonry buildings was repaired.
In the case of strong earthquakes, it can be expected that the largest number of human casualties and damages will be registered in the buildings with masonry structure.
The testing of aggregates consisted of determining: granulometric composition, fineness modulus (M) and the density of the saturated surface of dry grains (γzz).