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The average number of pores (Nav) is calculated by the Eq. 1: Nav=NtotalS, (1) here: Ntotal is total number of pores on the controlled surface; S is the area of the controlled surface, sm2. 
On the controlled surface, the number of blue dots corresponding to the number of pores is counted.
When coatings were deposited by heating, dark brown phosphate films were obtained on the steel samples from a solution with addition of a cobalt nitrate, and gray coarse-grained precipitates interspersed with white crystals formed on the steel surface in a solution containing potassium hexacyanoferrate (III) (Fig. 1.
When testing coatings for porosity, the number of pores per cm2 of the modified coating was 3÷5, of the blue coating was 4÷5, of the green coating was 5÷6.

A sufficient number of ε-Cu and other antibacterial copper-rich phases precipitated in the stainless steels after antibacterial heat treatment is a must to ensure that the stainless steels have good antibacterial effect.
The antibacterial property was evalvated by the following way: Sterilizing rate η=[(B-A)/B]×100％ where A, B are the live bacterium numbers measured from the specimen of antibacterial steel and contrastive steel, respectively, in unit of cfu/ml.
Different from annealed specimens, a large number of fine precipitates precipitated in the matrix of specimens treated at 540 ℃, 560 ℃, 580 ℃ for 6 h.
Combined with XRD and EDS analysis, the precipitates were mainly ε-Cu and other copper-rich phases, and mainly precipitated in the ferritic grain boundaries and α/γ interface, no precipitates existed in the austenite phase, as shown in Figure 1.
However, the results of the contrast specimens showed that a large number of bacilli still grew on it’s surface after action for 24 h.

Introduction Oil shale is an organic-rich, with fine layer management, combustible, fine-grained sedimentary rocks.
These samples’ moistureed, pH, total DNA contented and the number of viable cells were as shown in Table 1.
Tab.1 Moisture, pH, total DNA contented and number of viable cells of the samples (values were means ± S.D., n = 3).
In the ecological environment with poor nutrients, the number of microorganisms was low but its metabolic diversity was not necessarily low.
Due to the competition for limited resources, some species with short numbers might become dominant species[[11] Cao Cheng-you, Yao Jin-dong, Han Xiao-shu, et al.

While Factor Analysis is a statistical method used to describe variability among observed variables in terms of a potentially lower number of unobserved variables called factors.
For each sample, respectively, 30±0.5g of plastic grains was filled into the cup in the standard procedure.
Three key factors determine a successful application of NIR techniques for fast chemical characterization: preprocessing method, appropriate number of the factors and frequency range.
Obviously it would be necessary to continue the learning step by increasing the number of samples in the database in order to get a better decision boundary with additional support vectors, with a corresponding improvement in classification
(3) Three key factors that determine a successful application of NIR techniques for fast chemical characterization are processing, frequency range, and number of used factors.

Table 1 Evaluation index system of port operating ability First level index Second level index The Comprehensive Evaluation Index System Of Port Operation Ability Cargo Throughput (A1) (0.3153) B11 Coal and goods (0.1998) B12 Oil natural gas and goods (0.3174) B13 Metal ore (0.1514) B14the ore constructs the materia (0.1147) B15 grain (0.2167) Container Throughput (A2) (0.2574) B21 international course (0.46) B22 inside branch line (0.2211) B23 domestic line (0.3189) Passenger Throughput (A3) (0.1424) B31 The throughput of passenger (0.3313) B32 The throughput of foreign trade (0.3793) B33 The throughput of car (0.2894) Berth Capacity (A4) (0.2849) B41 Length of berth ((0.0727) B42 Berth number(0.0999) B43 Annual cargo berth capacity (0.2771) B44 Annual container berth capacity (0.3222) B45 Annual passenger berth capacity (0.1245) B46 Annual automobile berth capacity (0.1037) Empirical analysis and results (1) Research data We use relevant data of the above-scale ports in Guangdong
The container throughput reached 11.31 million TEUs, compared to 2008, the number decreased by 3.50%, but the throughput is still very large, triumphed over Dubai port and ranked sixth in the word.
A number of reconstructions and the expansion of the port construction project have also made an improvement on port ability to production and run.
Shenzhen port and Zhanjiang port are ranked number two and number three respectively.

In addition, a large number of dark spots appear in the (SEM) micrographs of sample A.
This is due to the high temperature of the annealing and the severe interfacial reaction, causing the metal to shrink to the inside and leaving a large number of cavities after the collapse, which makes the flatness of the metal surface worse.
Besides, a large number of "voids" appear on the surface of most metals, which can be seen from the three-dimensional surface topography of AFM in Fig. 6.
A large number of cracks and metal bulges appear on the surface of annealed samples, which is caused by the diffusion stress of Ti and Al during RTA.
It can be seen that the number of holes from samples A to D is obviously reduced, however, the trend of surface roughness decreasing is not significant.

Tab. 2 Main technical parameters of the coupling test equipment Serial number Technical index Technical requirements 1 Rated load Static ±100kN 2 Dynamic ±100kN 3 Beam control Hydraulic lifting, hydraulic locking 4 Test space 20 mm～400mm 5 Test frequency 0.01Hz～30Hz Exposure Test
It was known from Fig. 5(a) that the original metallographic structure of 2A12 aluminum alloy was Al alloy matrix and strengthening phase particles, the larger particles were the undissolved alloy phase particles, the finer alloy phase particles precipitated were dispersed and crystallized, and the grains were fine and uniform.
A large number of scattering stripes are distributed around the fatigue source.
From Fig. 9 ( c ) and Fig. 9 ( d ), it is found that the morphology of the propagation zone near the crack source has the characteristics of quasi-cleavage fatigue crack propagation, and there are a small number of fine secondary cracks.
Patent number: ZL201811013650.4 [P]. 2020-09-17.

Introduction of new gate dielectrics into CMOS technology gives rise to a number of problems.
Grain boundaries are often the weak spots through which more current flows.
The position of the hot spots does not correlate with the position of the grain boundaries.
In oxides, Pr atoms can appear as Pr3+ or Pr4+ oxidation states; the oxidation number is approximately equal to charge state and is associated with the number of 4f electrons: Pr3+ has one f electron, while Pr4+ has none.
In spite of its odd number of electrons in the unit cell, Pr2O3 is thus an insulator.

This process, apparently easy to manage, is controlled by a great number of operating parameters, which all contribute to creating a good result.
Several studies on bonding techniques compared to welding and riveting have been conducted for a great number of materials and applications [1-4].
These samples were treated with impact angle of 30°, which is evidently insufficient to create the proper level of mechanical interlocking, with this sand, consisting of small and light grains, and little penetrating effect (fig.11).

A number of hot rolled high strength low alloy steels were considered, two of which are presented here.
Textures were measured by XRD on a number of locations of three deformed specimens.
It partly modifies the assumptions of the Taylor model as to take the stress interaction between adjacent grains into account in a statistical manner and can provide predictions of texture evolution for single phase polycrystalline materials with greater accuracy than the full or relaxed constraints Taylor models.