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Number of molecules between electrodes is in proportion to the product of Ar pressure and the distance of the target to the substrate [1].
The trend of table 1 shows that while the target distance is 11.0cm, 0.2-4.0 Pa is a pressure range with a number of gas molecules, at the same time, in the glow discharge, the mean free path of atomic and ion shorter with the work pressure rise, the back reflection probability of sputtering target atoms increases, the number reaches substrate reduces.
The films present uniform fibrous tissue, with the improvement of Ar pressure, the grain boundary density of (b) is poorer than (a), the form changes, surface roughness increases.
The results show that, in the Ar pressure range of 0.2 ~ 4.0 Pa, film thickness with Ar pressure increases and reduce gradually, and the change is stable, 0.2-4.0 Pa is a pressure range with a number of gas molecules.
The films present uniform fibrous tissue, with the improvement of Ar pressure, the grain boundary density becomes poor, the form changes, surface roughness increases.

Data source analysis Cross tabulation (or crosstab for short) is used to display a summary value (aggregate, count and average, etc.) from the table columns, a table display of the categories of two nominal scaled variables, containing frequency counts of number of subjects in each bivariate category [2].
Index 2000 2007 2008 Large & Medium Tractor (Unit) 974547 2062731 2995214 Consumption of Chemical Fertilizers(10000 tn) 4146.4 5107.8 5239.0 Hydropower Station in Rural Area (Number) 29962 27664 44433 Total Sown Area (1000 ha) 156300 153464 156266 Grain Crops 108463 105638 106793 Fig. 1 Data Source Example Chinese report followed many features of traditional customs in China.
As Fig.1 shows, the “Large & Medium Tractor (Unit)” refers to the number of large and medium tractors of China in the year of 2000 or other years.
Number '1' and '3' in the first line of Table 1 represent the rows and columns of the header of Figure 1.
(4) Residual Data Analysis This module statistics the number of the atomic data records and records in the fact table, and gives promotions for the data that did not enter the transition table or the fact table.

It was found that by increasing the number of grinding cycles, the hardened layer becomes thicker.
Because the abrasive grain hardness tends to decrease with temperature rise in grinding-hardening, a grade S wheel was selected.
Thus the number of the grinding cycles is , where is the infeed per workpiece revolution determined by .
It can be seen that increasing the cycle number N increases d.
Fig. 1 Effects of number of grinding cycles and the depth of cut, dr on the hardened layer thickness.

The more distinct cracks can be observed with increase of the number of fatigue cycles.
The more distinct cracks can be observed with increase of the number of fatigue cycles.
Fig. 4 Variation of radius of cone crack ac versus number of cyclic fatigue tests It was generally observed that the cumulative number n of cyclic fatigue tests and the maximum radius of cone crack ac in each cycle increase gradually and tend to a saturation value when n tends to infinity.
The variation of radius of cone crack ac versus number n of cyclic fatigue tests is shown in Fig.4.
The increase of fracture resistance with crack extension under stable crack growth can be attributed to energy-consuming effects such as micro-cracking, crack ramification, bridging by grains, crack shielding by a damaged zone, plastic deformation, or phase transformation.

Humans use a large number of plant species for food, but only 150 plant species are commercialized on a significant global scale.
The decline in the number of crops on which global food security and economic growth depend may pose some threat to future food supplies.
The variety is categorized as a grain crop for its intended use.
Both the grain and the green mass are rich in amino acids, proteins, dietary fiber, essential minerals, and bioactive substances.
In particular, the length of the shoot determines the number of lateral stems, the number of fruits on the plant, although there is no unequivocal dependence of the yield on the height of the plant.

The fatigue tests were interrupted after different numbers of cycles for several stress amplitudes and residual stresses and FWHM-values were measured by X-ray diffraction methods at the surface and as a function of depth.
The Ti-6Al-4V alloy used in the present study is characterized by a bimodal or solution treated and over-aged microstructure with a primary α-content of 64% and an average grain size of 20 µm.
The investigated stainless steel was hot-rolled fully austenitic AISI 304 with a grain size of 70 µm.
In principle, the plastic strain amplitude (usually taken at half the number of cycles to failure) may also be used for fatigue damage assessment of surface treated materials, as can be seen in Fig. 3 for an austenitic stainless steel in different surface conditions.
In the temperature regime, where dynamic strain aging occurs (around 300°C), the lower cyclic plasticity leads to more stable residual stresses after half the number of cycles to failure (Fig. 5), but also to higher hardness and more stable work hardening [21].

As the temperature rises, gradually more uniform pore size distribution, the number of pores gradually increased, the surface becomes more smooth.
When the temperature reaches 1300 °C, the Silicon Carbide porous ceramic filter membrane has the largest number of stomata, and the most flat surfaces.
When the temperature is less than 1300 °C, have great influence on transition layer and the membrane, binders are not completely melting, and the glassy phase to produce less, resulted in large viscous resistance, limiting the flow of grain boundary materials, binder can not uniformly cover on the surface of SiC particle, clogging pores.
Due to the characteristics of the selected binder, when temperature is 1225°C, the binder does not completely melt, glass phase generates less, the melt viscosity and viscous resistance values are relatively large, restrictions on the movement of grain boundary phase, caused partial pores jam, air cannot be smoothly through.

In last several years, nano magnesium fluoride prepared research initiated abroad, mainly include sol-gel method[1], direct precipitation method[2-4] and microemulsion method[5], the paper based on the preparation of nano materials and theory, utilized of ultrasonic cavitations generated high-pressure environment for the formation of the fine particles to provide the desired energy, ultrasonic frequency influence the diffusion velocity of the ions in the solution, increase the growing velocity of precipitate nucleation, and ultrasonic cavitations generated a large number of bubbles in the high temperature, the surface of the solid particles is also greatly reduces the specific surface free energy of the nuclei, thereby suppressing the nuclei coalescence and growing, for the first time the using sonochemical method prepared nano-MgF2,the powders have well-crystallized degree, spherical shape, high purity and good dispersion.
Table 1 Experiment scheme Serial Number MgCl2 [mol/L] NaF [mol/L] Temperature [℃] ultrasonic frequency [kHz] 1 0.05 0.01 50 0 2 0.1 0.05 65 40 3 0.5 0.2 80 45 4 1.5 0.5 95 60 5 2.0 1.0 80 80 Results and discussion The Effect of Reactant Concentrations.
As the NaF concentration was increased, the degree of supersaturation became larger, MgF2 nuclei formed, continue to increase the NaF concentration, when the concentration is too high, since the precipitation condensation process, the Gibbs free energy was less than zero, there were spontaneous agglomeration, while the impurity ions [Na+] concentration increasing, the impurities were more easily into the crystal, it may lead to the destruction of the crystal uniformity, thereby causing the change in morphology (the sphericity of the particles, size, agglomeration), and therefore, suitable concentration of NaF is 0.2mol/L; MgCl2 are not precipitated at lower concentrations, probably because the system was too small saturation, slow down the crystal nucleation and growth rate , the grain growth is slower and less precipitated were collected at a certain time, the concentration is too large will cause the same grain becomes small to cause agglomeration generated, therefore, the suitable concentration

Moreover, corrosion attack along the grain boundaries is apparent in both samples.
This procedure was chosen in order to preserve the maximum possible number of particles in the plane of observation so they could be documented and their point analyses performed.
Fig. 8a and 9a give the look of the analysed site, inclusive of the location of the line of the analysis being conducted; Fig. 8b and 9b show a detail of the line while Fig. 8c and 9c give the distribution profile of the elements being analysed (the number of pulses read for individual elements is marked on ordinate axis).
Summary On the basis of the performed observations and analyses the following conclusions could be arrived at: The surface of the submitted spring washers was heavily deformed and thermally affected (corrosion attack along grain boundaries accompanied by decarburisation to a depth of ca 25 μm).

However, relative deep sump due to large temperature gradient across the trans-verse section of billets present in the traditional DC casting processing, especially for large dimension billets or high alloying alloy, would lead to some problems such as macrosegregation, coarse and non-homogeneous crystalline grains, porosity, hot-tearing, or poor surface quality.
French researcher Vives[10] and his colleagues invented CREM (casting, refining, electromagnetic) processing, in which the stir-ring effect of electromagnetic field was applied to refine crystalline grain in aluminum alloys.
(a) with LFEF (b) with lubrication and LFEF 3.2 Effect of electromagnetic condition on the surface quality of billet A large number of experimental results indicate that the frequency and intensity of alternate current all influence the surface quality of billet markedly.
However, violent stirring induced by too large B would destroy the top surface oxidation film and promote formation of the new film, and all the large number of oxidation films would be pushed quickly into the surface area.