Search results

cccccoverslip, take the sample slide under the microscope, adjust the brightness of the field of view，observing the slide under the microscope, measuring the particle occupied lattice number on scale or near on scale ,or count on the horizon : 1 below the number of particles, 1 to 2 the number of the particles and accounted for more than 2 the number of particles.为了获得统计上正确的平均，至少统计500个粒子。
The formula体积平均粒径公式如式3.1所示: of volume average particle size as formula (1): (1) 式中 n i表示第 i 区间内颗粒的个数； d i表示第 i 区间内颗粒的平均直径；式中 i 为微粒体积平均直径； d i为某一粒径范围的中心值，粒径范围分别为 0 ～12um，12～15um，15～ 2 0um，和20um以上Where ni represents the number of particles in the interval of the i; di represents the average diameter of particles in the interval of the i; where i is the average diameter of the particle volume; di is the values of center in a range of particular size, the particle size range were 0 -12um, 12-15um, 15 - 20um, and 20um above. n is the fire extinguishing agent particle number of 1.3.2 斥水性falls within the range of grain diameter.
Compared the performance test index with fine dry powder extinguishing agent standard of GA578-2005 of China, showing that the rate of moisture absorption, water repellency, bulk density values are in conformity with the relevant standards, mobility is also very good. 2.3草原火灾灭火剂灭火效能The fire extinguishing effectiveness of grassland fire extinguishing agent 2.3.1不同粒度灭火剂灭火效能研The fire extinguishing effectiveness of different particle size fire extinguishing agent 实验中草原火灾灭火剂的灭火用量受许多因素的影响，一般某种粒度灭火剂用量处于一个用量范围区间之中，见表6所Experiment of grassland fire extinguishing agent fire extinguishing dosage is affected by many factors, the general dosage of a certain grain size agent at a interval, shown in Table 6.
And with the increase of the fire extinguishing agent particle size, the scope of the minimum dosage of extinguishing agent is gradually increasing; illustrate the smaller of the fire extinguishing agent particle size, the smaller of the extinguishing agent dosage. 2.3.ND1添加剂Study on the characteristics of ND1 additive 为了提高草原火灾灭火剂的灭火效能，显著降低草原灭火剂成本，通过大量的筛选试验研究，终于找到一种草原灭火剂添加剂ND1，并对ND1的工作特性进行了一些试验研In order to improve the fire extinguishing efficiency of grassland fire extinguishing, significantly reduce the cost of grassland fire extinguishing agent, through a large number of screening tests, finally found a grassland fire extinguishing agent additives ND1 , and carried out some experimental research for the characteristic of ND1.The result is shown in Table7 and Fig.6 表 7 ND1 添加量与最小灭火剂用量的关系Table7 Addition amount of ND1and the minimum dosage of fire extinguishing agent Table 7 Addition amount of ND1 and the minimum dosage of fire extinguishing agent 灭火剂性能 Extinguishing agent performance

In a high temperature range, the Seebeck coefficient of a strongly correlated system becomes almost constant at a value formulated by Chaikin, Beni [23] and Koshibae et al. [24] as, where, g; total number of configurations, N; total number of carriers.
The g-term becomes, where, NA, M; system size, number of Co4+ ions.
Figure 9 shows the possible numbers, g3 and g4, of spin states of the Co3+ and Co4+ ions [24].
The grain sizes of the sintered powder samples, which changed during the sintering process, are shown in the insets.
Fig.17 Power factor, PF=S2/ρ (a), and ZT (b) vs. temperature curves of the commercially available fine grain Ga-doped ZnO.[47] Diameter of the sintered ZnO grain sizes are shown in the insets.

The resulting product is angular in nature, lending itself to cold pressing, where the irregular morphology promotes interlocking between individual grains to limit voidage.
It is reported the retained hydrogen aids densification [11], whilst refining and generating an ultrafine grain (UFG) microstructure, leading to improved mechanical properties [11].
A considerable number of these are devoted to transforming Kroll/Hunter into a continuous process, i.e.
A number of techniques are under consideration by various parties, being reviewed in (Table 3).
Following the success of this preliminary proof of concept, a number of demonstration parts were fabricated, applicable to a range of industrial sectors.

In domestic Chinese traditional medicine researches, there are a great number of them on medicinal materials authenticity identification and quality evaluation [1-4].
Material: 8 kinds of Radix Cynanchi Paniculati medicines from different locations Dry the sample in the oven, and then, grind them into fine and even powder with grain of 200 meshes.
Additionally, in order to get the reliable classification result, the sample number is normally 3 more than the number of characteristics, 10 is desirable.
Furthermore, differences in number may influence the stability of calculation.
In the table, number 1, 2, 3, 4, 5, 6, 7, 8 samples are respectively from: Guangdong, Beijing, Henan, Anhui, Shanxi, Hunan, medicine company and medicine market (7 and 8 are the samples with unknown locations).

So as the grain of parallel different, PGAs can be divided in four methods[7]: Simple PGA (SPGA), Master-slave PGA (MPGA), Island PGA (IPGA) and Cell PGA (CPGA).
Alg. 1 pseudo-code of SMRPGA function mapper() { runs GA; // identify GA is ran on Mapper ejects the result to Reducer; } function reducer(key, value) { foreach(key) { // choose the best result if(value[key] is better than best_value) { replace the best_value with value[key]; } } eject the best_value; } main() { set input method; //set input nothing set output method; // set the output position of result set Mapper; // set Mappers’ number set Reducer; // set Reducer’s number 1 submit job; } Implementation and Experiment Sets MapReduce environment.
So the number of all possible passwords are MJ. 2) Mountain function[9] This function is very simple and the maximum value is 1 when x=1.
Parameters setting are as the following: 1) Password function Length of password J = 10; The number of character M = 8; Only one individual is set in population since password function is no hinting.
When f(x) doesn’t equal to 1, GA randomly selects one character and replaces it with a random character. 2) Mountain function Domain N = 20; The number of people = 200; The length of gene = 63; Crossover factor = 0.2; Mutation factor = 0.1; Fig. 2 The speed-up of SMRPGA for password function (left) Fig. 3 The speed-up of SMRPGA for mountain function (right) Figure 2 and figure 3 display the variation of iteration times and running time with the change of Mappers’ number, at the same time display the speed-up of two ways: iteration times and wall clock time.

The size of silica depends on the type of silicon alkoxide and alcohool, a large number of studies were conducted indicating that particles prepared in methanol solutions were the smallest [5].The main disadvantage of this method was the wide range of particle size distribution.
Infrared absorption spectra of samples were measured using infrared spectrometer (NICOLET 750), using KBr tablet method, test wave number ranged between 4000 and 400 cm-1.
Table 2 Orthogonal experiment table Sample numbers Concentration of silica-rich filtrate C[°Bé] Surfactant dosage ω[%] Reaction temperature T1[℃] Calcinations temperature T2[℃] NS-1 8.8 2.0 45 500 NS-2 8.8 5.0 60 600 NS-3 8.8 8.0 75 700 NS-4 11.9 2.0 60 700 NS-5 11.9 5.0 75 500 NS-6 11.9 8.0 45 600 NS-7 14.7 2.0 75 600 NS-8 14.7 5.0 45 700 NS-9 14.7 8.0 60 500 Fig.1 illustrated the morphology and particle size which were characterized by field emission scanning electron microscopy (FE-SEM) mentioned in Table 2.
This was because of the liquid medium produced a large number of micro-bubbles when the liquid dispersed by ultrasound, the release of energy to produce cavitations in the micro-bubbles formation and rupture process.
High temperature produced by cavitations and a large number of tiny bubbles on the surface of solid particles greatly weaken the surface free energy of small grains, inhibiting the nucleation agglomerate and larger.

Specimens are molded by wooden pattern, made close-grained by earthquake toppled and is removed after 24h.
Table.1 Experimental result of uncorroded specimens group 1 2 3 stress level S1=0.75 S1=0.75 number (MPa) number Nf number (MPa) result 1-1 1-2 1-3 1-4 1-5 1-6 30.39 28.09 29.82 31.58 32.44 26.15 2-1 2-2 2-3 13581 12339 14761 3-1 3-2 3-3 24.96 26.11 25.98 average 29.74 13561 25.68 Table.2 Experimental result of corroded specimens group 4 5 6 stress level S1=0.75 S1=0.75 number (MPa) number Nf number (MPa) result 4-1 4-2 4-3 4-4 4-5 4-6 27.51 26.93 28.84 27.93 26.29 28.16 5-1 5-2 5-3 9891 10281 9933 6-1 6-2 6-3 21.03 21.47 23.76 average 27.62 10035 22.09 P - R - N Curve.

The microhardness numbers of the three types of microstructure are shown in Table.2.
The microhardness number of the black microstructure is similar with granularity pearlite, the microhardness number of the gray microstructure is similar with martensite, and the white microstructure with extreme higher microhardness must be carbide [10].
As shown in Fig.4(a), it could be infer from the morphology of granular carbide and the microhardness number of the black microstructure that the black microstructure is granular pearlite.
According the microhardness number of the gray microstructure and the shear in Fig.4(b), the gray microstructure must be martensite.
Therefore, plenty of diffuse cementite nucleuses were distributed in the austenite grain when the matrix was at a sufficiently high temperature below A1 temperature.

Recent work [11] also demonstrated that the number of d + s electrons/atom exerts significant effects on the P-N barrier energy and the fracture toughness of Nb-Ti-Cr the solid solution alloys.
Ti Content, At. % 0 10 20 30 40 50 Fracture Toughness, MPa/m 0 20 40 60 80 25°C Nb-Ti-Cr Solid Solution Alloys In-Situ Composites (Nb,Ti)Cr2 Experimental Data Model Calculation Laves Phase Solid Solution Alloy Number of d + s Electrons/Atom in Alloys 4.4 4.6 4.8 5.0 5.2 5.4 5.6 5.8 Fracture Toughness, MPa/ m 1 10 100 25°C Nb-Ti-Cr Solid Solution Alloys In-Situ Composites Cr2Nb Experimental Data Model Calculation Solid Solution Alloy In-Situ Composites Intermetallics.
The linkage of the main crack and microcracks, which dictates the observed fracture toughness, often occurs without plastic stretching of the Nbss particles, as observed in Grains A and B in Figure 10 [5].
The absence of ductile-phase toughening in the Nb-based in-situ composites appears to originate from the phase morphology in the composite microstructure and the consequence of a relatively continuous silicide phase in the microstructure such that the crack path resided in the silicide and Laves phases, as seen near Grain B in Figure 10.
Fracture paths in cast and heat-heated Nb-based (Nb-Ti-Hf-Si-Ge-Cr) in-situ composite with high volume percents (>50%) of silicide and Laves phases are primarily within the silicide (grey) and Laves (dark) phases with little ductile-phase blunting or stretching in the Nb solid solution (light) phase (Grains A and B).

The sandstone grains were aged in brine for 5 days to induce spontaneous imbibition before being aged in crude oil for another 5 days.
A stirring heater with an rpm of 40 was used to gently agitate the mixture, ensuring that the solution was constantly in touch with the grains and mimicking flow from the injection well to the production.
The much-reduced transmittance intensity for BaTiO3-MnO-infused sandstone suggests a significantly greater absorbance, indicating a strong intermolecular interaction between the BaTiO3-MnO nanoparticles and the sandstone grains' surface ligands.
The higher the number of particles increases the interactions between particles, leading to increased resistance to fluid.
Mahani, "Pore-scale simulation of the interplay between wettability, capillary number, and salt dispersion on the efficiency of oil mobilization by low-salinity waterflooding," vol. 26, no. 06, pp. 4000-4021, 2021