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And a large number of experimental studies have shown that the composite additive can effectively reduce the temperature and reaction pressure required for sintering, and can greatly increase the degree of densification of the boron carbide ceramic[10-12].
A large number of particle agglomeration occurred due to the high concentration of aluminum nitrate, which caused excessive reaction with ammonia in the same time, resulting in excessive formation of aluminum hydroxide particles, adhesion to the surface of the substrate, and high temperature and high pressure in hydrothermal reaction.
Rodriguez, Exotic grain growth law in twinned boron carbide under electric fields, J.

The grain size and morphologies of the powder specimens were observed by a Hitachi 3400N scanning electron microscope (SEM) operated at 25 kV with energy-dispersive X-ray spectrometer (EDS).
Brighter particles in the BSE pictures demonstrate phases with higher concentration of europium since that element has the highest atomic Z number among constituents of M-a-Sialon.
It is interesting to see that a number of particles with significantly higher Eu2+ content developed with increasing amount of barium/strontium silico-nitrides.

In this work a wide range of modifiers were proposed to be investigated in order to introduce a photoactive component, which makes it possible to extend the radiation band to the visible spectrum and increase the number of active sorption sites.
A number of Lewis acid sites (coordinately unsaturated Al and Si ions) and Bronsted base sites (functional OH-groups playing a role of donors on the zeolite surface) exist on the zeolite surface.
The structure was stated to be quite homogeneous with even distribution of pores and channels.Based on elemental analysis data it was found that the composites received by ion exchange have more uniform distribution of grain sizes (Fig. 2a) compared to those received by Pechini method and having some areas with high metal content (Fig. 2b).

After the experiment was finished, the number of solids (char) left behind was taken and weighed.
The nitrogenate compound (Fig. 3(b)) is produced from cracking protein, the increase in the number of nitrogenate compounds (7.32-20.93 wt.wt%) is caused by the deamination reaction, and Maillard's reaction with carbohydrates produces Amadori compounds [2].
Budiman, Effect of grain size, temperature, and amount of catalyst on characteristics of pyrolysis products from Spirulina platensis residue (SPR), International Journal of Technology 10(3) (2019), 541-550

The areas indicated by the red arrows and within the ellipse are the presence of Fe-rich phases, which are mainly generated during the crystallization of the alloy melting [18,19] (most segregation at grain boundaries).
As can be seen in the white dashed box, secondary cracking was generated at this location due to the presence of a large number of Fe-rich phases, which in turn led to intergranular fracture.
Fig. 2 (d) shows the fracture morphology of alloy E3, which indicated that the fracture of this alloy has a certain number of dimples and micropores formed by the debonding of the Fe-rich phases.

It is easy to know that the r0.01=0.917 by referring to the table because the sample number is 6 kinds of heat treated aluminum alloy sheets in this paper [9].
It is the general consideration that the plastic strain ratio r is mainly influenced by the grain orientation [12, 13].
The correlation coefficients rc with a significance level a=0.01, i.e., r0.01 is known to be 0.917 by referring to the table, because the sample number is 6 kinds of heat treated aluminum alloy sheets.

By comparing Fig. 4(a) and (b), the number of pit on the surface of A and B steels appears obviously with increasing temperature.
At 90˚C, there have large numbers of piting corrosion grains on the surface, especially in B steel surface is relatively more corrosive pit.

The inner diameter of the coil is 3 mm, the winding number of coil is 4 turns, and the surface of the coil is coated with a zirconia adhesive.
And the relationship between the counter electromotive force vprobe measured by the magnetic probe and the magnetic flux density B, and the internal current ∆Is would be expressed as: ( ) dt Id r S
 BS
 dt d v s probe ∆ −= −= π µ 2 0 , (2) where 
 is the number of windings of the coil and S is the area of the coil [9].
ZnO micro-powder was used for clarifying grain size dependence for preferential orientation.

Fig. 2a-2c illustrates the increase in grain agglomeration of the sample surface becomes irregular granules.
This ZnO reaction pattern is following the data model referring to the Crystallography Open Database (COD) number 9004182.
At the wave number 1250 cm-1, a vibration stretching of the C-N+ bond in the polaron structure is observed [20].
It is because the characterization tool used only works in the middle infrared wave number area (4000-200 cm-1) while the Au wave number area is outside the instrument wavenumber area [30].
In this case, it assumed that the increase in the deposition time of Au has an effect on the number of free electrons from the Au to the ZnO layer, where the high number of free electrons causes the Fermi level of ZnO to shift higher into the conduction band so that the bandgap widens.

Namely, the representation must accomplish the following three requirements: Present fine-grain scalability that allows progressivity and full adaptivity.
A number of approaches have been developed in order to improve TCP and TFRC over wireless networks [12] [6].
The goal of this representation is not to model a facade with high geometric accuracy, but rather to keep the main characteristics of the facade (such as color, building material, number of stories, number of windows per story, and primitive style) simple, and thereby obtain a compact representation.
This means that to reduce the impact of roundtrip delays, the client-side LOD selection process must update the local panorama with a minimum number of server requests.
The system splits the LODDT according to size parameters, such as the targeted number of levels in a packet, maximum size of a packet, and so on.