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Column number 1 2 3 COD removal rate （%） factors Amount of doped zinc amount of doped lanthanum Calcination temperature（℃） 1 1（1%） 1（0.1%） 1（400） 63.3 2 1（1%） 2（0.2%） 2（450） 64.9 3 1（1%） 3（0.3%） 3（500） 72.1 4 2（2%） 1（0.1%） 2（450） 77.9 5 2（2%） 2（0.2%） 3（500） 79.5 6 2（2%） 3（0.3%） 1（400） 84.6 7 3（3%） 1（0.1%） 3（500） 83.4 8 3（3%） 2（0.2%） 1（400） 85.2 9 3（3%） 3（0.3%） 2（450） 86.1 Ⅰj 200.3 224.6 233.1 Ⅱj 242 229.6 228.9 Ⅲj 254.7 242.8 235 R 54.4 18.2 6.1 2.2 Determination of the photocatalytic properties DIY an organic glass reactor, on whose top centre three UV lamps (20W, 254nm) with aluminum foil sealed are fixed.
Taking the same number of beakers, respectively put 200mL sample water of the reactive dyes and 0.25g of the catalyst powder into each beaker and stir it under UV irradiation.
The diffraction peak of ZnO-TiO2 looks relatively wider than that of pure TiO2’s, which means that the crystal grain size of ZnO-TiO2 decreases.
With the Scherrer formula, it can be figured out that the crystal grain sizes of pure TiO2 and ZnO-TiO2 are respectively 16.2mm and 8.9mm.So we can know that the doping of ZnO suppresses the growth of the TiO2 crystal.
On the other hand, probably due to the high concentration of reactive brilliant blue X-BR, the number of • OH it produces is limited.

Principle of Electrical Parameter Calculation Virtual values of the voltage v (t), current i (t) with period T are defined as: , (1) If the number of sampling points per period is N, the sampling interval is , and the k-th sampling values are and .
There is still a large number of non-seize in the kernel, and the limited schedule times make the new effected scheduler not fully.
Implementation of Fine-grained Timer.
The easiest way to realize the fine-grained timer is to increase the frequency of the timer, and the shortcomings of this method are obvious: it will seriously reduce the performance of the system for substantially increasing the timer of the interrupt services in the routine processor time.
If f (K0) <0, f (K1)> 0, linear f (t) between K0 and K1, then the following equations will be get: (6) (7) Count the number of break point KM from K1, and find the second positive zero crossing with the same method, to calculate Δt2, and the signal period T = 80 (M-2) + Δt1 + Δt2(ms).

Temperature variations in solution heat treatment can affect the value of hardness and grain roughness of the 7075 series aluminum microstructure.
Result and Discussion Tensile Test Results Tensile tests were carried out with the number of specimens 2 in each condition, with the following results in Table 1.
The large number of empty lattice areas generated as a result of the dyeing process is influenced by the large cooling rate that occurs during immersion.
This is due to the temperature of the solution heat treatment which is getting closer to the melting point and the soaking time which exceeds the thickness limit of the specimen, causing an increase in the diameter of the constituent atomic grains and causing a decrease in tensile strength.
Acknowledgement The authors gratefully acknowledge the financial support from Indonesian Ministry of Education and Culture under the PKKM program 2021 (Program Kompetisi Kampus Merdeka) with grant number: 55/E1/KM.05.03/2021 (June, 17th 2021).

The number of possible compositions for HEAs is much larger than that for conventional alloys, which opens new possibilities for exploring novel materials with tailored properties.
Therefore, it is necessary to increase the number of melts to enhance the chemical homogeneity and control the cooling rate during crystallization.
The configurational entropy of mixing for a regular solution alloy can be calculated as: , (2) where is the atomic fraction of the i-th component, R is the universal gas constant, and n is the number of components.
Another reason for this difference in microhardness apparently consists in the fact that the MQ Al4CoCrCuFeNi HEA films were far from the equilibrium state and had a microstructure that was characterized by a higher level of microdeformations, dislocation density, and smaller grain sizes, in contrast to the as-cast samples, which were in a more equilibrium state.
Salishchev, et al., Mechanical Behavior and Microstructure Evolution during Superplastic Deformation of the Fine-Grained AlCoCrCuFeNi High Entropy Alloy, Mater.

In the coarsening stage, the carbon concentration remained unchanged and the number of particles per unit volume fell sharply.
The nucleation rate is too small to contribute to the number density of precipitates.
The presence of many defects, such as dislocations and grain boundaries that are preferential nucleation sites for cementite, the nucleation energy barrier can be sufficiently lowered.
The number density reaches its peak and the particles start to grow at the end of nucleation.
In the coarsening stage, the mean radius increases and number density of particles decreases.

The V(C,N) particles act as grain refiners.
When there is no nitrogen present (as in 3-a), less than 0.15 [wt%] C should be used to avoid graphitization at long exposures at 500 [oC], while heat treatment above 900 [oC] may lead to grain growth; with the addition of only 0.003 [wt%] N (as in 3-b), the two-phase field of austenite + V(C,N) is much extended, and grain growth can be avoided up to 1000 [oC].
The lines represent where a phase appears or disappears; numbers show on which side of the phase-boundary line that particular phase is stable.
The V(C,N) particles act as grain refiners.
Fig. 13 is an example on structure evolutions of dendritic formation (through competitive grain growth in a dendritic array) and eutectic growth [31-34].

The result show that: with the acr current increasing, the Cr content of (Ti,Cr)N composite films increased, the Ti content decreased, the number and size of droplets decreased, and the hardness of composite films increased first, then decreased.
We can see that the number and size of droplets decrease with the current Cr increase.
On the other hand, it could inhibit the growth of films grain and further improved the hardness of the films.
Conclusion (1) When the acr current increase, the Cr content of (Ti,Cr)N composite films increase , the Ti content decrease, the number and size of droplets decrease

Samples were subjected to the cycling heat/frost device and effect of a number of cycles on final bond behaviour of both UHPC and ordinary concrete were investigated.
The number of cycles varied from 100 to 400.Degradation of material and related decline of material characteristics may have very significant impact on values of the bond stress.
Samples were identically maintained as samples from concrete C50/60 and were subjected to the same number of cycles.
Fine-grained structure of UHPC in connection with excellent material parameters would resist on a long-term basis to extreme conditions represented undoubtedly by these freezing cycles.

The coordination number of C and/or O around Si is about four.
In order to avoid the brittleness at grain boundaries of polycrystalline state, the molecular structure of the precursor and the pyrolysis process must be optimized in order to prevent crystallization and to preserve an amorphous state up the working temperature [5,6].
In the study on silica glass [13], the pair distribution function G(r) (= 4πrρT(r), ρ: atom number density) exhibits three peaks at 1.61 Å (Si-O), 2.63 Å (O-O) and 3.07 Å (Si-(O)-Si).
Thus, assuming that the peak at 1.4 - 2.2 Å in the T(r) of NL400 fibers contains two contributions, namely a contribution of a Si-O correlation at around 1.6 Å and a contribution of a Si-C correlation at around 1.9 Å, the corresponding partial average coordination number Nij can be estimated from the peak area Aij using Nij = Cij·Aij/Wij.

The experimental programme was designed to investigate the deformation and failure modes of sandwich beams, so a large number of experiments have been conducted, and the experimental results are reported and discussed systematically.
To investigate the deformation and failure modes of sandwich beams, a large number of experiments have been conducted, and the experimental results are reported and presented systematically.
Its average cell size was measured according to the ASTM method for the grain diameter measure in polycrystalline materials [9].
Using a special clamped fixture, a large number of sandwich beams have been loaded under quasi-static loading.