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Once again, all these diagnosis methods have their own disadvantages, for example, the sample preparation for optical microscopy is very delicate and time consuming and a large number of gel and cracking must be formed for good examination; for SEM-SE, the observation of a fracture surface is not reliable.
The grey level of BSE image is directly proportional to the backscattered coefficient η, which is related to the atomic number Z by the empirical equation [6, 7]: (1) Where a0, a1, a2 are coefficients, which depend on the parameters during image acquisition, such as the accelerating voltage.
Accordingly, the higher the average atomic number, the brighter is in the backscattered image.
Fig. 4 shows the mapping of concrete, presenting the reaction of fine dolomite grain with alkali.
Hydrotalcite has a fibrous structure, which is filled with the original dolomite grain.

Through methods, such as microscope analysis, metallographic examination, the crack located nearby the fusion line between tee joint and outlet steam pipe of subcritical power station boiler final superheater header is reheat crack (the main crack occurred in the heat affected zone and extended along the fusion line and grain boundary in HAZ.
From metallographic examination, the main crack extended along grain boundary, and there were many small cracks paralleling with main crack.
Intergranular in coarse grained region Pre-welding heat treatment The method of Pre-welding heating treatment should adopt electric heating, such as Rope-type heater boosters.
The number of inspecting positions was not less than four for welding seam an for base metal and all inspection positions should be distributed uniformly along circular.

The obtained results may be used for the development of the design of units for drying fine-grained materials in the SHF-fields.
Figures next to the curves correspond to the number of the experiment No changes of chemical and granulometric composition of the concentrate or of its magnetitic properties are allowed during the drying, as it is used for the preparation of ferrite powders.
Oxidation accelerates with the rising moisture, which might be determined by the kinetic reasons and be attributed to facilitation of oxygen absorption together with water molecules on the surface of the concentrate grains.
Conclusions We have studied the advantages of application of super-high frequency field energy in comparison with conventional sources of energy for the drying process of fine-grained magnetic iron oxide concentrates subject to special requirements to ensure purity.

Amorphous structure is characterized by the absence of any long-range ordering ensuring no crystalline anisotropy, grain boundaries and other structural defects typical of polycrystalline alloys.
It should be noted that the increase of cooling rate during alloy crystallization leads to the additional saturation of the solid solution both in the volume of grains and on their boundaries.
Thus alongside the dispersion of all the structural components solid solution strengthening in volume of grains and at their boundaries occurs; the volume ratio of the boundaries increases.
- technological pressure factors (temperature, speed, compression ratio), which influence the size and geometry of grains and phase components.
Alongside the disintegration of grain and structural components during ultrafast crystallization changes the fine alloy structure, i.e. metastable phases appear, grain boundaries are being enriched with alloying components, an oversaturated solid solution appears.

The other can be named as extended imperfections, such as grain boundaries, cracks, pores, other inclusions and interfaces in coating systems [7][8].
For instance, the grain boundary terms has the least effect on the phonon mean free path in conventional materials, but can provide a significant effect in nanostructured coatings [3].
For conventional materials, the grain boundary contribution to heat carriers scattering is thought to be small, however, grain boundaries within thermal barrier coatings can have a significant effect, particularly when the grain size of the same order as the mean free path.
Nano-grained structures act to scatter both phonons and photons.
The nanostructured grains would lower thermal conductivity of plasma sprayed TBCs. 4.

Diamond has excellent properties such as high hardness, low coefficient of friction, chemical inertness, transparency, and semiconducting properties, which make it attractive for a number of industry applications.
It can be seen that a partially continuous thin film was formed on the C-face, while inconsecutive diamond grains were deposited on the Si-face.
And the diamond grains on the C-face were obviously denser and more uniform than those on the Si-face.
The individual grain on the Si-face had a rougher morphology and was more likely to form secondary nucleation.
The grain size of the diamond on the Si-face is generally larger than C-face.

The contour numbers represent the percent efficiency of power dissipation.
In comparison to the initial microstructures as shown in Fig. 1(c) and (f), DRX grains in Fig. 7 are prominent.
Moreover, the DRX grain size increases with an increase of temperature and decrease of strain rate.
This is because the higher temperature and the lower strain rate provide the longer growth time to DRX grains.
The previous researchers have concluded that the DRX grain size decreases with increasing Z parameter [18, 23-25].

A number of computer algorithms/software has been developed for clustering gene expression patterns.
Fig. 4 shows the optimal k-clustering quality values versus the number of clusters.
Our program suggests that an optimal 5-clustering gives the initial coarse-grained clustering of the whole data set.
Different levels of finer-grained clustering are then made.
Our algorithm is greatly improved than original algorithm in time aspect (Fig. 5). 0 20 40 60 0 1 2 3 4 5 6 Number of clusters(k) Running time(s) MCA IMCA Fig. 3 Time comparison of Yeast data 0 10 20 30 40 50 0 100 200 300 400 Number of clusters(k) q Fig. 4 Objective function values versus the number of clusters, for the gene expression data in response of human fibroblasts to serum 0 20 40 60 420 430 440 450 460 470 480 Number of clusters(k) Running time(s) MCA IMCA Fig. 5 Time comparison of Human serum data Composed data.

It has been established that small additions of yttrium contribute to the grain refinement of the carbide phase and the formation of trigonal chromium carbide (Fe,Cr)7C3 in the structure of chromium white cast iron.
Both variants of hardness data were collected from at least ten readings per specimen and the data were reported as Rockwell C hardness (HRC) and Vickers hardness numbers (VHN), respectively.
Conclusions Yttrium in small additions (0.2-0.3 wt.%) leads to the following changes in the structure and properties of chromium white cast iron: 1) Reducing the average grain area of the carbide phase and the formation of trigonal chromium carbide. 2) Redistribution of C and Cr concentrations in the carbide phase and metal base.

Introduction Over the past three decades a number of methods for fracture toughness determination have been proposed, and of these, three methods were initially standardized as ASTM standards within document ASTM C1421.
The release of individual large grains in an alumina, for example, will limit the sharpness of the notch compared with the achievable effect in a fine-grained silicon nitride or yttria-stabilised zirconia (Y-TZP), where a root radius of 2 µm can be obtained under optimum conditions.
These materials do not all have a fine grained microstructure, but provide a wider range of characteristics and toughness levels to test out a method comparison.
In this work, in only the high-purity fine-grained alumina SCF pre-cracks could any evidence of subcritical growth be clearly seen.
The coarser the grain size, the less planar the pre-crack becomes, and the rougher is the final fracture surface in relation to the indentation pre-crack size.