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The second series of castings was carried out using a rectangular wedge mold that was designed to optimize the number of test specimens for mechanical property evaluation [6].
The tensile properties of each condition were obtained from a representative number of tensile test specimens.
For grain refining, a 0.015 wt% Ti, in the form of an Al-5Ti-1B rod, was added during the tests before pouring molten metal into the SEED process.
Results indicate that TiB2 grain refiner addition had little impact on mechanical properties.
This is probably due to the characteristic fine globular grain structure resulting from the SEED process.

The SnO2 lattice formed a large number of lattice defects in this process.
At the same time, the grain growth hindered due to the relatively concentration of Sb on the surface of the grain size was high and the surface diffusion barrier was increased [8].
As the reasons that the acceptor nature of Sb3+compensated free electrons which Sb5+ and oxygen vacancy produced，the lattice disorder made the donor activation energy increased and other reasons made the number of carriers declined in the overall.
The result is that the grain boundary scattering degree of the obtained samples increased and the carrier mobility reduced.
The other reason is that the grain size of the sample is small and there are defects and a large amount of grain boundaries in the crystal.

Simulated experiment and analysis In order to objectively compare images’ results of edge detection, we adopt quality factor R to appraise the algorithmic function: Among them: m is the number of true edges; n is the number of detected edges; d(i) expresses the distance from the i edge to the responsive detecting edge, is a proportion constant, it may be 0.1, the most ideal situation of detection is R=1.
In order to verify the correctness and validity of the improved algorithm, adopt a rice grain image and the Lena image to do experiments.
The computer deploy that is used to experiment is AMD Athlon (tm) 64 X2 Dual Core Processor 3600+ CPU, 1 G RAM memory, the software deploy is Windows XP Professional, VS2005: Fig.4 and table1 is respectively the results of simulated experiment of the rice grain image and its corresponding quality factor.
Fig.4(a)~ Fig.4(c) are respectively the primitive rice-grain image, the results from Canny method and the Results from improved Canny method.
Table1 the quality factor from rice-grain image edge image Canny detecting method improved Canny detecting method R 0.8947 0.9474 Fig.5 is the results of simulated experiment of the Lena image.

Selective doping of the A site with a divalent cation such as Sr 2+ and the B site with Mg 2+ significantly enhances the ionic conductivity and transport number of LaGaO3, usually referred to as LSGM, making it a promising solid electrolyte for low and intermediate temperature solid oxide fuel cells [1-4].
The mechanical activation of La2O3, SrO, Ga2O3 and MgO precursors at 550 rotations per minute in a planetary ball mill significantly increased the reactivity of the powders and dense LSGM ceramics with an average grain size of about 250 nm could be obtained.
The image also shows that grains are essentially spherical but with a certain size distribution.
A typical micrograph is shown in Fig. 4, where grains with similar tonality have similar crystallographic orientations.
After initial image processing steps based on a variance filter, threshold and erode operations, the shape, area and number of particles was analyzed, setting a minimum size of 50 nm2 and circularity between 0.2 and 1.

Table1: Electromigration experiment with different sample size Number of samples Accelerated temperature [K] Accelerated current density [ 2 /MA cm ] Testing temperature [K] Width/length/thickness of samples [ / /m m m µ µ µ ] a 393 2.0 293 2/1325/0.5 b 393 2.4 293 1.7/1335/0.5 Table2: Electromigration experiment with different accelerated temperature Number of samples Accelerated temperature [K] Accelerated current density [ 2 /MA cm ] Testing temperature [K] Width/length/thickness of samples [ / /m m m µ µ µ ] d 393 2.4 293 1.7/1335/0.5 e 373 2.4 293 1.7/1335/0.5 Our experiment consisted of two parts: accelerated electromigration and noise testing.
At vacancy accumulation stage, a relationship between vacancy concentration and time can be written as 2 0( / ) , vC C v D t = (1) where vC is the vacancy concentration of grain boundary, 0C is the located vacancy concentration far away from grain boundary, v is the velocity of vacancy stream, D is vacancy diffusivity along grain boundary.
So, at vacancy accumulation stage, vacancy concentration in grain boundary increases constantly, electron scattered probability becomes greater and greater, so that electromigration noise increases.
At this stage, the major phenomenon in metallic thin is new vacancies' generation, diffusion and accumulation in the area of grain boundary, the 1/ f noise mainly origins from vacancy scattering.

Introduction The strengthening mechanics of second-phase particles to steel mainly includes precipitation strengthening and fine grain strengthening.
For the precipitation almost happens in the inner of austenite grain, that is to say, under the solidus temperature, the particles can not become the nucleus for the austenite grain nucleation, accordingly which has no effect on the refining of the original austenite grain.
By this way, the demand on the cleanliness of molten steel is not higher; and the process controlling is also easily, moreover, the ultra-fine particles have the effect on the inclusion refining, original austenite grain refining and the final process.
When the steel temperature reached 1600 ºC, kept it for 10 minutes; (2) Taken 0 # steel sample (original steel sample); (3) Quartz tube inserted into the bottom of molten steel, following a certain volume (about 0.2 L/min) argon as the carring gas, a certain sized of MgO·Al2O3 spinel powder with 1.0 g was sprayed into the steel; (4) The beginning of time (0min); (5) Taken 1 # steel sample after1 min; (6) Taken 2 # steel sample after10 min; (7) In accordance with the above (3) - (6) steps to continue the spraying experment, the specimen obtained by sequence number untill the total spraying quantity reached to 5 g.
Table 1 is the size distribution of inclusions in terminal samples sparyed different size of MgO·Al2O3 spinel powders.The total number of inclusions decreases with the increasing size of sparying powder particle, and the average particle size of inclusion icreases with the increasing size of sparying powder particle, while the total area of inclusions changes little.

Preliminary samples had been prepared for the research, i.e. grinding had been carried out on paper of different grain size with a gradual transition from coarser to thinner grain.
When grinding, sanding paper on a paper basis (GOST 6456-75) with grain numbers of 10, 8, 6, 4, 3 (GOST 3647–80) had been used.
Eutectic is located between the grains of the α – solid solution of the needle-shaped form, and has the form of honeycombs.
Microstructures differ from each other in the number of components present in the phases, mainly Mg2Si, Al8Mg5 + Al8Fe2Si.
Chandrashekar Effects and Mechanisms of Grain Refinement in Aluminium Alloys, Bull.

Dominants with other than spiritual function, which the religious buildings performed, were increasing in number with the progress of industrialization of agricultural production and its intensification in the countryside.
Large number of the sites and vertical dominants has lost its original function; they are abandoned, not maintained, have ruined and are meaning a big problem for villages and rural landscape [1, 4].
Silo with building for grain-cleaning was additionally built in 1934.
Concrete silo building with grain-cleaning part, which has been a dominant in landscape visible on the way from Opava to Ostrava for 80 years, was also reconstructed.
This building is used partly as a “Water goblin Sláma Museum”, in which extant remains of grain milling technology are exhibited, supplemented by a small exposition introducing history of miller’s trade in Opava region, mainly running of the local mill in Lhota.

The number of glaciers is 46,298 in total.
In tonal on, white is the grain of xue yuan, glacier, tongue and temporary snow, therefore also need to be judge of the nature of the snow, namely at the temporary or sex, can according to photograph the time to determine
(2) The drawing of tablets of a snowy field aerial photos Grain snowfields exist above the snow line, a large number of expected snow accumulation area, also known as snow and ice basin.
Many factors affects material snowy texture, firn between each other with increasing and then become particles of ice-like, therefore, the coarse texture is grain snowy one of the signs.
In the coverage area of grain snowy, original natural form can not be exposed from the ground.

Number of composition Composition of binder NaOH (%) Activator/ Binder Strength at various temperatures of thermal treatment (MPa) Slag (%) Fly ash (%) 60°С 80°С 105°С 1 0 100 0 0.22 2.5 4.7 55.8 2 0 100 3 0.265 25.5 28.0 49.5 3 0 100 6 0.265 35.3 46.0 54.5 4 8 92 0 0.25 4.0 19.5 46.0 5 8 92 3 0.265 30.1 38.0 38.3 6 8 92 6 0.28 47.5 52.0 48.5 7 16 84 0 0.22 9.5 38.6 31.7 8 16 84 3 0.265 38.4 40.1 26.6 9 16 84 6 0.265 52.0 56.8 46.5 Table 1 shows that introduction of slag additive to ash-based binder leads to the fact the higher activator alkalinity provides significant increase in strength.
Number of composition Specific surface area of the components ( m2/ kg) Compressive strength at ambient conditions in different ages (MPa) Empirical coefficients granite slag 3 days 7 days 28 days a b 1 200 200 6.4 11.8 29.8 0.350 0.546 2 200 300 7.8 13.6 33.4 0.321 0.676 3 200 400 9.5 16.1 35.9 0.301 0.793 4 300 200 7.3 12.9 31.4 0.327 0.640 5 300 300 9.8 16.1 33.8 0.290 0.806 6 300 400 12.4 18.4 38.6 0.260 0.963 7 400 200 7.6 13.4 31.3 0.322 0.665 8 400 300 10.1 16.0 36.2 0.286 0.834 9 400 400 12.5 20.1 41.0 0.255 0.997 Statistical analysis of values of granite (X1) and slag (X2) specific surface area, as well as of a and b factors made it possible to establish the dependencies as follows (Eq. 1, Eq. 2): , (1)
Investigation of influence of the slag content in binder varying from 15 to 20%, the hardening activator content varying from 10 to 15%, when expressed in terms of solids, and the amount of alkali in hardening activator varying from 3 to 5%, when expressed in terms of binder, on strength of fine grain geopolymer concrete permits to obtain computational models of strength dependency on the factors under various conditions (Eq. 6, Eq. 7): R60 = 17.2+1.4×X1+2.3×X2 – 0.6×Х3, (6) R80 =29.088+4.5375×X1+2.2375×X2, (7) where R60, R80 are strength of fine-grained concrete hardened for 16 hours at 60 and 80°С respectively; Х1, Х2, Х3 are slag content in the binder, activator dosage, and additional amount of alkali in relative units.
The investigation of hardening kinetics of geopolymer fine grain concrete has been carried out using fine grain concrete, which samples were tested for 28 days every day.
Strength of fine grained geopolymer concrete and graph of average values of the strength.