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Table 1 Fine tin slime system for multi-element analysis results/% Element Sn Pb Zn S As Sb Fe CaO SiO2 Content 0.68 0.072 0.092 1.37 0.094 0.26 3.04 11.09 32.70 Table 2 Fine tin slime system particle size analysis results /% Grain size (mm) Yield Grade Distribution rate Sn S Sn S +0.3 1.18 0.2 5.66 0.34 4.86 +0.15 11.57 0.11 1.92 1.86 16.18 +0.074 15.35 0.12 1.07 2.69 11.96 +0.056 4.83 4.05 5.65 28.57 19.87 +0.043 15.11 1.22 1.36 26.92 14.96 +0.031 39.27 0.59 0.85 33.84 24.25 +0.021 4.53 0.49 0.85 3.24 2.80 +0.0105 2.42 0.30 0.69 1.06 1.21 +0.008 1.51 0.22 0.69 0.49 0.76 -0.008 4.23 0.16 1.02 0.99 3.14 Total 100 0.68 1.37 100 100 Particle size analysis showed that in the fine tin slime system the feed grade of tin is 0.68%, and the main part of tin metal is in -0.074mm grain size with the distribution rate of 95.11%. to mine tin grade of 0.68%, mainly the rate of tin metal in, grain size distribution which accounted for 95.11 percent rate.
(1) In the fine tin slime system, there is a large number of pyrrhotite with fine grain size which are oxidized easily and floated hardly.

A number of experiments on the absorptivity and add methods of recarburizer, reached the following conclusions by experiment
(1).The grain size of recarburizer is the best between 10 ~ 20mm, if it is too large, extend the melting time of recarburizer and reduce carbon absorption rate, on the contrary, also decrease the carbon absorption rate and increase carbon burning loss
(4).We slagging off when there is no recarburizer grain above the molten iron.
Modificator is on the bottom of casting ladle, grain size demands 2 ~ 5mm.
(5).Carburant absorption rate is affected by grain size, add methods, furnace temperature and other factors, the absorption rate is generally between in 75 to 85%.

Crystalline fraction of p doped nc-Si decreases from 35 to 57% as with increase of B2H6 concentration Introduction A large number of studies are devoted nowadays to nanocrystalline silicon (nc-Si) thin films as promising structures for photovoltaic, flat panel display applications[1,2].
This shows B2H6 incorporation hindrance to make crystalline in Si matrix. 0 2 4 35 40 45 50 55 60 Crystalline fraction B2H6 flow rate (%) Crystalline fraction 0 5 10 15 20 25 Grain size (nm) Grain size (nm) Fig. 3 crystalline fraction and crystalline size of p doped HWCVD deposited nc-Si with different B2H6 concentration 2.458 2.459 2.460 2.461 2.462 2.463 2.464 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 d-spacing (Å) sin ² (Psi) Stress: 206.7 ± 114.2 MPa Phi = 0.0° Fig. 4 A typical Residual stress measurement of n doped HWCVD deposited nc-Si.
The splitting nature of d spacing indicated the nano-grains are not aligning to substrate orientation or, asymmetric grain growth on the vertical nature.

During the SMAT process, the metal surface was shot-peened by a large number of stainless steel balls.
As a consequence, the grains in the top surface layer were refined effectively.
Results and discussion The nanostructured materials prepared by SMAT have grain sizes ranging from tens nanometers on the very top surface to micrometers as the depth increases.
The nanocrystalline grains are well-defined and show relatively clean interiors, with grain sizes in the range of 50-100 nm.

However, a limited number of studies have been paid on pure PNN ceramics unlike that of PNN-based systems [1].
In general, SEM micrograph of the PNN ceramics (Fig. 1(b)) exhibits dense microstructure consisting of equiaxed and elongated grains with abnormal grains of size around ~7-10 µm, probably due to the recrystallization during firing and variation of stoichiometric compositions [8], in agreement with other works [1, 6].
The grain size is in the range of 1 to 10 µm, which is significantly lower than those observed in the typical columbite-route PNN ceramics [6, 7].
Minor phases can be found in this micrograph, in particular at the grain boundaries and at the triple point junctions.

The grain sizes are in the range of 1-10 µm.
The RE addition might enhance the growth or nucleation of grains with (001) and (003) crystallographic planes in the plane YBCO coated conductor.
The ionic radius of rare earth elements (Sm (62), Ho(67), Er (68), Yb(70)) decreases with the increasing atomic number.
The RE elements, which have smaller ionic radii than Y, may manipulate the size and distribution of these weak superconducting regions during grain growth [1,3,14].
The microstructure of RE substituted YBCO coated conductor has a similar morphology, large rectangular grains, but the higher Jc value was obtained by Yb and Er substitution for Y due to the lower peritectic temperature and smaller ionic radius of Yb and Er.

It can be observed that in all the samples the hardness increases from sample 10% to 40% with cold reduction This trend in hardness variation is due to strain hardening, which is in agreement with the literature [8-9] on application of stress greater than the yield strength (during the cold rolling), number of dislocations increased tremendously.
In previous studies [2] we proved there is no effect of grain size on the eddy current.
This may be either due to decrease in austenite phase or in grain size during cold reduction process.
However, as we have discussed in previous section that the change in eddy current is due to change in metallurgical phases and not due to grain size.
Therefore, in case of ultrasonic velocity testing, the increase in values with cold reduction may either due to increase in martensitic phase or change in grain size or both.

The test equipment used for the CMT2502 type of microcomputer control electronic universal testing machine, the PM-8188 grain moisture meter, the vernier calipers with the resolution ratio of 0.01 mm, the Qin huang dao XL2118 static strain tester, the electric resistance strain gauges (4mm×7.5mm), the 240-360 mesh series sandpaper, the 502 super glue, the wire and the solder iron.
Application of PM-8188 grain moisture meter to measure the corn kernel moisture content, the results showed that the corn kernel moisture content is 13.2%, also can according to different finite element model established requirements to change the grain moisture content.
In the grinding process, application of the resolution of 0.01mm vernier caliper to measure the grain sample continuously, made ​​the corn kernel was rectangular specimens (9mm × 9mm × 3mm), the specimens as shown in Figure 1.
Table 1 Experimental data of Poisson's ratio of corn kernel Test number Determination of the parameters Test loading (N) Average value Standard deviation 30 60 90 120 150 1 Longitudinal strain/εl 411 834 1381 1652 2148 Transverse strain/εd 163 341 551 688 961 Poisson's ratio/μ 0.397 0.409 0.399 0.416 0.446 0.414 0.017 2 Longitudinal strain/εl 430 833 1247 1623 2136 Transverse strain/εd 160 348 496 677 918 Poisson's ratio/μ 0.372 0.418 0.398 0.417 0.430 0.407 0.013 3 Longitudinal strain/εl 453 821 1424 1751 2319 Transverse strain/εd 197 331 612 716 1016 Poisson's ratio/μ 0.435 0.403 0.429 0.409 0.438 0.423 0.018 4 Longitudinal strain/εl 413 817 1268 1633 2217 Transverse strain/εd 156 295 500 674 1001 Poisson's ratio/μ 0.377 0.361 0.394 0.413 0.452 0.399 0.013 5 Longitudinal strain/εl 446 812 1302 1715 2123 transverse strain/εd 176 296 547 669 937 Poisson's ratio/μ 0.395 0.365 0.420 0.390 0.441 0.404 0.013 As shown in Table 1, with the loading speed of the testing machine

From Fig.6 (a),(b), it can be observed that T92 steel remained martensite laths morphology, and there were a large number of black spots in the phase diagram which were micropores formed in the creep process.
Ref [6] demonstrated that some dispersive particles existed in the grain boundaries and internal martensite laths, and the type of particles was M23C6.
Ref [7] demonstrated that M23C6 precipitates coarsed gradually with the increase of creep time and easily formed the grain boundary defects in the creep process.
From Fig.7, it can be observed that there are a lot of precipitates along the grain boundaries and martensite laths boundaries.
Laves phases mainly precipitated in martensite laths boundaries and prior austenite grain boundaries, and the coarsening of Laves phases occured with W and Mo precipitated from the matrix in the long term creep.

These technologies have various disadvantages, such as the FIB which is a more common method, it is expensive, low productivity, and the etching process introduces a number of radiation defects which limits its scope of application.
Then the based-silicon aluminum was annealed at 500 ˚Cin argon for 2 h, which increased the grain size and the adhesion of aluminum and silicon substrate.
From the SEM images, we can found that the grain size of Al nuclei affect the nanopore’ aperture and pore-pore spacing, and the shape of the grains also limit the size of the alumina unite.
Furthermore, the annealing process can increase the grain size, forming the based-silicon PAA with good morphology.