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Raw Materials and Methods In selecting the composition of fine-grained polymeric concrete the following components were used: polymeric binder, fine aggregate, mineral fillers, and various additives.
According to the grain composition and content of dust and clay particles sand belongs to class I, the group is of medium size, its properties comply with the requirements of all-Union State Standard 8736 [20].
It has been established that increasing the number of ASHM from 4.25 to 17.25% does not impair the workability of the polymeric concrete mixture.
With a higher number of microspheres (compounds No. 4 and No. 5), the spreadability of the concrete mix decreases to 140 mm relative to the standard spreadability (not less than 180 mm).
It was previously found that with increasing the number of microspheres and decreasing resin the workability of the concrete mix decreased, it became necessary to introduce an additional component into it – a plasticizer.

However, ferroelectrics and ferromagnets, like any functional materials, have a number of disadvantages that limit their use. [16-20].
Journal of Physics Condensed Matter, 29(27), Article number 275701. doi:10.1088/1361-648X/aa718cL [15] Pleshakov, I.
Grain boundary sliding, triple junction disclinations and strain hardening in ultrafine-grained and nanocrystalline metals. 
Effect of grain boundary segregation of co or ti on cyclic deformation of aluminium bi-crystals. 
Nanoscale Research Letters, 12, Article number 459

Therefore these mass losses cannot be accounted for, as they are not erosions as such, characterized by grain breakage and expulsion.
After 60 minutes of cavitating stress, small pinches are observed on the surface of the samples, and from the 120 minutes onwards an increase in the number of pitting is observed, with the formation of grooves of various lengths and depths.
In the image you can see the pitting and caverns created as a result of bond breakage and grain splitting.
In the image, pitting and caverns created as a result of bond breakage and grain explusion can be identified.
Craciunescu: Cavitation Erosion Mechanisms of Solution Treated X5CrNi18-10 Stainless Steels, JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME 138 (3), (2016)Article Number 031102 [16] L.M.

A small number of wavelet and Fourier coefficients were used to simulate the grinding wheel surface by Wang etc[7].
And Zhou and Xi[8] modeled the grain protrusion height as a Gaussian random variable.
Nx is the sampling number; ∆x is the minimum sampling interval
The procedure relies on only a few samples of the semi-fixed abrasive plate surface topography with no assumption regarding abrasive grain distribution.

Pure colorless crystal is colorless and transparent quartz, rock crystal If, after a number of X-rays or neutron irradiation, will become dark brown.
Some of the large number of small colorless crystal cracks will form a light interference effects arising iridescence, this crystal is called Rainbow Crystal.
Natural crystal double-crystal grain present in the crystal interior, irregular-shaped or linear, angular, polished degree better.
Synthesis of double-crystal crystal grain present in the crystal surface, irregular shape, the transmitted light can be clearly seen, the strip adjacent polishing wavy different levels, while the polishing better, and the adjacent side is bad often found scratches.

The number of sources is determined by the number of grains of sand and coarse aggregate that have piezoelectric quartz in their structures.
The aggregate grains are distributed over the whole volume of the concrete sample.

Naturally, it is hard to visualize the structure of the universe and the structure of the multi universes, but the constants of nature are the numbers that define the essence of this interesting possibility to explain the cosmic micromechanics and cosmic macromechanics of the universe.
During super plastic flow in SESPS, grains are in motion with respect to each other.
This physical reality allows defining the concept of super plastic field as a continuum matter in a similar way as the crystalline structure defines the elastic field, because a field is a function that associates one o more numbers with each point in the space.
In this framework the components of velocity at a grain are functions of the coordinates system and the time.

Grain size of it was 30µm or more.
An energy calibration equation must be derived to convert a channel number into X-ray energy because the number of counts corresponding to the diffracted X-ray intensity is recorded at each channel of a multi channel analyzer (MCA).
In this experiment, this equation was obtained from the measurement of five kinds of mono-energetic source of Mo, Ag, Ta, Pt and Pb, which was given by MCAofnumber Channel En × + = 042486.0252334.0 [keV]. (4) Results and Discussion A translatory oscillation of r2 mm along the X-direction and a rotary oscillation of r2 degree in the X-Z plane of the specimen were done simultaneously because the diffracted X-ray peak counts at each measurement position fluctuated with the relationship between the grain size and the X-ray gauge volume.

As indicated in Nam's model[9-11], the number of cavity nucleation in proportional to the plastic strain range to a power of m.
Therefore the number of cavities during cyclic loading per unit area of grain boundary, n, should be assumed as (1) where sa=(smax-smin)/2 is the loading stress amplitude, P is the cavity nucleation factor and m is a constant.
With absorbing the vacancies which diffuse along grain boundary, the nucleated cavities will grow with the development of creep.

Results and Discussions Laser induced AISI 420 morphological changes showed dependence on beam characteristics: primarily on the energy density, peak power density, pulse duration and the number of pulses.
The registered features possess different grain sizes from 100 nm to one micron.
B. interaction - non-uniform features with appearance of crater forms; also registration of nano-grains; in the periphery zone of interaction - appearance of three damaged areas and change in sample color.
Acknowledgments This research was financially supported by the Ministry of Science and Environmental Protection of the Republic of Serbia (Projects numbers 1995 and 2018) and by the Ministry of Sciences and Technology of the Republic of Slovenia.