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Liao et al [6,7] reported that PEC can result in the multiplication of the crystal nucleus and grain refinement by making the crystal nucleus on the mould wall fall down and drift in the liquid.
As the disturbance of PEC can decrease the potential barrier of nucleation, increase the number of nucleating sites and shorten incubation time of nucleation, the nucleation rate is improved.
Due to the disturbance of PEC to the liquid alloy, the growing dendrites are broken up to form more nucleus, which increase the number of crystal nucleus and refine the dendrites.

(3) Infiltrating study: quality quartz grain, when the size of quartz sand is bigger, its specific surface area is small, which need less infiltration of resin, when the size of quartz sand is smaller, its specific surface area is bigger, which need more infiltration of resin.
Test Condition: (1) test environment conditions: temperature (23±2) degrees, relative humidity (50±5) (2) sample appearance condition: sample should be flat, bubble-free, flawless, no obvious impurity, processing damage and so on, otherwise, the sample should be null and void, (3) measurement precision of sample size conditions: the size not more than 10mm and accurate to 0.02 mm, the size more than 10mm and accurate to 0.05mm, (4)the condition of the sample number: the effective sample number of each group was not less than five.

Tenebrio known as the "king of animal protein feed," in the world, by factory production, which provides a large number of high-quality animal protein, to promote aquaculture development.
With the land, grain-saving, water, energy, saving space, saving manpower, "six" feature.
After the sale of goods insects, farmers have been breeding in a large number of adults, this is an investment in long-term benefit[7].

It is clear that the temperature has a very large effect, namely with the reaction of temperature rising, the spread of solvent molecules in leaching solution speeds up and the stockpile energy of mineral grains increases, then the ability of damage or weakening of the chemical bonds of mineral enhances, and the number of molecules whose kinetic energy is equal to or greater than activation energy increased.
Table 3 Results of test at best conditions Test number 1 2 3 4 Leaching rate /% 58.88 58.92 59.42 59.12 Conclusion (1) The researches of ore properties show that the oxidized zinc ore has the characters of high oxidation and high SiO2 and CaO

Each collection module is responsible for collecting tens to hundreds, even thousands of housing temperature data, but the specifically the number, depending on the built environment and specific circumstances.
The figure above shows a virtual design, increasing or reducing the number depend on practical environment in practical.
[2] Donghui Sun, Ruixue Cui, Lihua Xu, The Research of Monitor System for Grain Situation Based on Zigbee Wireless Sensor Network, Proceeding of the 18th International Symposium on Test and Measurement (Volume 4), 2009

It wins everyone's favor with its unique superiority, obtains the promotion and the application in most areas of our country, and appears a large number of the production of vitrified bead.
There is a great defect of the grain size, apparent density, vitreous membrane cover area, resulting in thermal insulation vitrified bead layer of material coefficient of thermal conductivity and wall heat transfer coefficient, strength, density, water absorption, and difficult to guarantee the actual demand of building energy saving project.
Provincial Natural Science Fund; Item number: KJ2013Z103 References [1] Lu Yuhua, The Application of thermal insulation vitrified small ball mortar in external wall energy-saving Engineering; Research & Application of Building Materials,2011(9): 26-27 [2] Information on http://www.chinasafety.gov.cn/ [3] JC/T 1042—2007, Expanded and vitrified small ball [4] Zhao Lei, Ye Beihong; Study of improvement on hydrophobicity of thermal insulation mortar containing vitried cenospheres; Chemical Materials for Construction, 2009(5): 34-37 [5] Guo Zhongchao; Study on the process and key control point of F-16 inorganic fiber spraying; Resources Economization & Enviromentprotection; 2010(1): 61-63.

With the increase in the number of users of cloud storage, the data storied in cloud increase, whether these data are security has become a hot issue.
Data audit: Data audit can record real time data activities on the network, manage data operation with fine grained auditing, give an alarm of the risk data suffer from and block attacks.
Through the reinforcement on the server, operating system, database and application system, timely patch the application and system, reduce the number of vulnerabilities, ensure the security of the server and programs and prevent illegal tampering.

Moving dislocations interact with different obstacles (other dislocations, grain boundaries and precipitates) preventing their (dislocations) further movement and propagation.
The diagram shows that represented dependence can be described by a single equation, which confirms that the number of different signs pre-strains does not affect the level of effect Bauschinger.
Comparing yield point values calculated using a mathematical model to the values determined experimentally showing good correlation R = 0.98 (Fig. 6) of data, which also supports the conclusion that the number of different signs pre-strains does not affect the level of Bauschinger effect.

The crust of the carbide milling surface was removed in Murakam solution, the tool surface was coarsened and a large number of defects were formed on the tool surface, so it could increase the contact area between the reaction of gas source and substrate and improve the nucleation density of diamond on the cemented carbide substrate.
Figure 1 (b), (c) and (d) were the surfaces which had been pretreated through sulfuric acid hydrogen peroxide solution, hydrochloric acid aqueous solution and methanol solution, it could be seen from picture, the surface of the substrate was roughened via three different pretreatment methods, and appeared a large number of tiny pits uniformly distributed, the effect of three pretreatment methods were different, the surface of the substrate had the higher roughening degree after treatment with the sulfuric acid hydrogen peroxide solution, it could be clearly seen the cavity defects on the surface (Figure 1b), followed by the hydrochloric acid aqueous solution, the substrate surface had the lowest roughening level which had been pretreated by methanol solution.
The diamond’s SEM and Raman maps of three types pretreatment afterwards as shown in figure 2(a), (b), (c), it could be seen from the SEM maps, the diamond particles emerged triangle or diamond shape, grain boundary was very clear, the size of the particles was uniformly and ordered densely.

Micro-tubes running parallel to the surface and grain boundaries are enlarged, and triangular shaped etch pits have formed where micro-pipes and other dislocations penetrate the surface.
The chart in fig. 3 shown the increase of step bunching number.
In fig. 3a an increase of the number of step bunching as a function of the etching time was observed.