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Table 2 Formulations of specimens % Raw material Serial number of specimens 1# 2# 3# 4# White corundum Aggregate 51 51 51 51 ≤0.043 mm 10 8 6 4 Si-Fe ≤0.043 mm 2 4 6 8 Zirconium-Corundum 20 20 20 20 Carbon 3.5 3.5 3.5 3.5 Additive 13.5 13.5 13.5 13.5 The apparent porosity, volume density, compression strength, resistance to oxidation, high temperature bending strength（1400°C, 2h）of specimens were tested according to GB/T 2997-2000, GB/T 5072-2008, GB/T 13244-1991 and GB/T 13243-1991.
Table 3 Physical properties of specimens Performance Serial number of specimens 1 2 3 4 Apparent porosity(%) N2-flowing 1.4 1.2 0.9 1.2 CO atmosphere 3.1 3.0 2.9 5.3 Volume density(g·cm-3) N2-flowing 3.36 3.39 3.41 3.39 CO-flowing atmosphere 3.33 3.35 3.37 3.32 Compression strength (Mpa) N2-flowing 140 162 206 171 CO-flowing atmosphere 125 154 178 157 High temperature rupture strength(MPa,1400℃,2h) N2-flowing 16.86 18.34 22.90 20.25 CO-flowing atmosphere 9.61 9.64 10.85 10.86 Practical decarburized depth(mm) N2-flowing 1.92 1.66 0.73 1.45 CO-flowing atmosphere 1.86 1.62 1.29 1.48 From the above results, it is obviously that the performance of slide gate sintered in N2-flowing atmosphere is better than firing in CO-flowing atmosphere,the best material is the specimens3 which was added 6wt% Si-Fe in N2-flowing atmosphere.
The experiment accounted for that: a few Si-Fe reacted to create Si3N4,there is nothing of reaction in the central section of white granule such as B, here Fe:Si=1:1; Si-Fe joined the reaction and created Si3N4 in the edge of white granu such as A, here Fe:Si=3:1, Ti may be the impurity of the raw material.While Si3N4 was found in the edge of this white grain.

Mengcheng County is one of the major grain producing area in Anhui Province, The main agricultural products of it are quality wheat, soybean, potato, and so on.
The national standard soil samples (GSS-1, GSS-2) were put in the soil sample analysis process for quality control, the number of repeat analysis of samples was 10% to 15%.
The increase of these heavy metals content, especially Pb, Hg, Ni, As, was widely considered to be caused by the increase in vehicle exhaust emissions, large-scale use of pesticides, garbage pollution to soil, sewage irrigation, applying a large number of superphosphate, mining activity ect[8,9], but this remained to be discussed further.

Introduction A large number of nodes and critical parts of modern mechanisms operate under high wear and corrosion cyclic loading.
Grain pearlite and ferrite are randomly arranged relative to each other [4].
Scratches become less deep, the number of dark areas is reduced and the wear area is reduced.

A large number of vacancies, grain boundary defects and crystalline phase transition are introduced, promoting interface atomic diffusion and improving the solid solubility of the reinforcement in the matrix.
There could be a number of possible reasons: including the small amount of CNTs used, the well dispersed CNTs within the matrix, unfavorable strain/CNTs effect that reduces CNT peak intensity, and the amorphization of CNTs, and so couldn’t appear [4-5].

The iteration number n is a parameter governs particles shape uniformity; particles can be made more uniform by increasing iteration number, here use default value n = 5.
Étude numérique des matériaux granulaires à grains polyédriques: rhéologie quasi-statique, dynamique vibratoire, application au procédé de bourrage du ballast[D]. 2007 [7]Normes françaises. 1996.

Thus, in order to efficiently control the particle size of prepared powder and significantly reduce the temperature of preparation of the compound, a number of chemical routes using all kinds of precursors, for example co-precipitation[6-8], sol-gel, hydrothermal and colloid emulsion technique, have been developed as alternatives to the conventional solid state reaction of mixed oxides.
Based on XRD analysis, the powder was examined for its morphology and grain size using a field emission scanning electron microscopy (Model JEOL JSM-7600F, FEI Co., Japan).
The gel fired at 550℃ in air atmosphere consists of the mixed phases of Mg5Nb4O15 and Mg4Nb2O9 precursors, which can be matched with JCPDS file numbers 20-0681 and 38-1459, respectively.

As a result, a growing number of complex refractory ore resources with the characteristics of low-grade, fine particles and symbiotic complex come into ore dressing and metallurgy industry[1-3].
There is a large number of beach placer reserves in northern Waterfront of Taiwan, between Taitong and Xiu Guluan River mouth.
Mn 0.71 0.39 0.92 MnO Fe 37.36 20.34 48.06 FeO O 31.15 59.20 Total 100.00 Fig. 3 EDS results of analyzed point 1 Table 3 EDS results of analyzed point 2 Element Weight [%] Atomic [%] Compound [%] Chemical formula Mg 1.74 2.37 2.88 MgO Al 1.87 2.31 3.54 Al2O3 Ti 4.88 3.38 8.14 TiO2 V 0.52 0.34 0.93 V2O5 Mn 0.59 0.36 0.76 MnO Fe 65.10 38.72 83.75 FeO O 25.30 52.52 Total 100.00 Fig .4 EDS results of analyzed point 2 Table 4 EDS results of analyzed point 3 Element Weight [%] Atomic [%] Compound [%] Chemical formula Mg 2.19 2.97 3.64 MgO Al 4.02 4.89 1.70 Al2O3 Ti 1.02 0.70 7.59 TiO2 Mn 1.02 0.61 1.32 MnO Fe 66.65 39.25 85.75 FeO O 25.09 51.57 Total 100.00 Fig. 5 EDS results of analyzed point 3 According to the results of elements′ line-by-line scanning (Fig.2 (c,d))and the EDS results of the analyzed point1,2and 3, we can deduce that most metallic minerals have a certain amount of Ti, which illustrates that fine-grained

Five experiments were designed by randomly selecting training and test digits from MNIST database respectively to quantify the impact on the recognition accuracy of the different number of training samples.
Comparison for correct recognition rates of GMDM and TD Train/Test number 50/200 100/200 200/200 300/200 400/200 CRR DMGM 91.2% 93.6% 95.4% 96.2% 96.3% TD 89.7% 92.0% 93.9% 95.0% 95.2% The experiments in Tab.1 shows that ratios of training and test samples influences the correct recognition rates both for DMGM and TD method, generally, more training samples, higher CRR, but it increased with training test samples raising gradually became weak while the training samples is big enough.
Lee: "Diffusion maps and coarse-graining: A unified framework for dimensionality reduction, graph partitioning, and data set parameterization," IEEE transactions on pattern analysis and machine intelligence, Vol.28 (2006), p.1393-1403

Many plants accumulate silicon in the form of phytoliths (microscopic grains of various shapes).
To date, researchers have accumulated additional material and, in particular, a fairly large number of new types of phytoliths.
A number of researchers believe that living organisms arose as a result of matrix synthesis of key biomolecules and biostructures on inorganic matrices.

Using burnt clays in mortars may influence a number of their properties [1]; in particular it is monitored the increase in compressive and flexural strength values.
If it is assumed that the durability of these composites is connected with the number of microcracks affecting them, and their ability to resist the propagation of such cracks, it is possible to quantify this durability using different brittleness parameters.
Specimens and fracture tests Specimens were made of mixtures containing CL-90 white lime in the form of hydrated lime (Carmuse Czech Republic Inc., Mokrá), sand consisting of three fractions of sand: PG1 (0–0.5 mm), PG2 (0.125–2.5 mm) and PG3 (0.5–5.0 mm) in a ratio of 1:1:1, and Heluz brick powder (Heluz cihlářský průmysl v. o. s., Hevlín) or L05 metakaolin (ČLUZ, a. s., Nové Strašecí) with the grain size d50 = 5 µm.