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But in actual construction process, a large number of engineering practice shows that the seams between the insulation board and insulation board or wall with single energy-saving window plastic junction, or plaster layer has widespread cracks phenomenon, the partial condensation of moisture is also very prominent.
Sand: As the sand grain size distribution does not conform to the requirements, or silt content is bigger, it can cause dry crack.
Glass installed in every article, demand docking, accurate location, block number, location, conform to the requirements to ensure that it meets basic requirements of air permeability, water leakage and heat preservation etc.

Perfect iron has its atoms arranged in a bcc lattice structure, but in practice there are various defects in this metal such as vacancy, dislocation, grain boundary and void i.e.
L. i.e. reported their MD simulations of the effect of Cr on the diffusion of single, di- and tri-interstitials in Fe–10%Cr alloys with two Finnis–Sinclair-type potentials to model the the Fe–Cr alloys. [3] MD simulations were used to study the interaction between a SIA and an edge dislocation in Fe to clarify their behavior in the evolution of damage structure during irradiation, in the so-called production bias effect through one-dimensional migration to sinks and in the so-called dislocation bias.[6] There have been a great number of MD simulations reported to study 1 or 2 dimension defects of iron.
In order to eliminate translation energy and describe the thermal effect of the defect in the process of shock propagation, the local temperature without COM (center of mass) velocity was introduced in our study, which is calculated by formula (1) (1) (2) where k=Boltzmann constant, N=number of atoms in a specific cube, mi =mass of atom i, vi=velocity of atom i, Tcom is local temperature without COM velocity, Vcom is velocity of the center of mass of a specified cube and calculated by formula (2).

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.

The model number of diamond wheel used for truing and dressing is 1A1/T2 200×6×20×4 MBD3 120/140 M75.
The model number of diamond wheel used is 1A1/T2 200×6×20×4 MBD3 120/140 M75.
The metal bond among diamond grains is removed.

Although these formed primarily at grain boundaries, some intragranular precipitates were also seen.
Fatigue Test Results Figure 4 shows the cycle numbers at fracture (Nf) under a series of fatigue stresses Δσ (Δσ=σmaxσmin, where σmin=0) for the specimens with four different hydrogen contents.
SEM fractographs of the tensile specimens (a) 236ppm H and (b) 617ppm H. 0 2 4 6 8 10 200 240 280 320 360 400 440 480 Fatigue stress /MPa Cycle numbers /Nf × 105 32ppm 110ppm 156ppm 270ppm Figure 4.

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.

When add 2%Si, SiCw is straight, the rate of straight grain is high, the length of SiCw is 10~15μm, the diameter of SiCw is 0.1~0.3μm.
Melting point of Si is 1420°C, at 1550°C, it melted and fully spread, so it has positive role in promoting the (1), provide a large number of the active site of the whisker growth, make SiO get into the liquid easily through gas- liquid interface, when SiO reach a certain degree of supersaturation, nucleus take shape and deposite on the interface of liquid and substrate, with the continued supply of gas, nucleus growed continued along the direction of one-dimensional[3], therefore, SiCw produced well.
When the Si is overfull, because the growth space of SiCw is limited, too much SiCw contacted with each other and assembled, these reduce the number of SiCw.

Introduction Classical theory of dynamic poroelasticity proposed by Biot [1] have been widely used in the investigations of soil foundations and soil-structure interaction problems by simplifying soils as two-phase media contains soil grains and pore fluids.
When an aximmetrical vertical load is acting on the free surface of a poroelastic half-space, the total number of nonzero solid and fluid displacements is reduced from 6 which corresponds to the general motion of three-dimensional poroelastic solids to 4.
Other variables appearing in the above equations are defined in the following, (16) (17) (18) (19) (20) (21) (22) where (23) (24) (25) (26) combined with the nondimensional material properties and frequency defined by, ; ; ; ; ; (27) and S are the non-dimensional wave numbers of three types of dispersive and dissipative body waves propagating in a poroelastic medium.

A number of studies and application have been done in Germany, Japanese and America after the World War II [2,3].
The grain shape of paticles is mostly near cube or sphere as well as the content of elongated and flakey particle is low.
Table 7 Compressive strength and Slump of specimens from different batches Batch Number Compressive Strength [MPa] Slump [mm] 7 days 28 days 3208 Foundation 33.3 51.2 220 3758 column of 1st floor 33.5 41.9 210 3953 beam and slab of 1st floor 29.8 42.5 210 4117 column of 2nd floor 26.0 36.0 230 Field rebound test results show that strength of recycled aggregate concrete fulfills the design requirement on compressive strength.

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