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Study also shows that particular alloy element type and right content are also important for high boron steel casting to improve the harden ability and hardening capacity, alloy elements can refine grain and improve its strength and toughness at the same time.
This, it may deoxidize, fix nitrogen, purify crystal boundary, refine grain, etc., and may achieve the purposes improving strength and toughness of high boron steel casting finally.
A number of boride and WC distributed in the matrix, microstructure is fine and distributes uniformly.

Undoped CdTe PTF usually show a high resistance which is commonly believed to result at least partially from some intrinsic structural defects, such as grain boundaries, act as carrier trapping centers, limiting the conductivity of the films.
According to the Seto mode [6], we think that the majority of Dy impurities are trapped by grain boundaries of the polycrystalline film.
It is interesting to note that after Dy ions implantation, the peak of 2LO (CdTe) has 2cm-1 shift to higher wave numbers whereas this shift vanishes after thermal annealing.

In-situ polymerization of Ani needs in the appropriate acidic environment, but CIP is eroded susceptibly by the acids and produces large number of bubbles.
In the figure it can be found that PANI sheet of the composite surface prepared on CIP is consists of small particles with 10~20 nm diameter, and the upper is deposited some big PANI grains with 100~200 nm diameter.
The morphology of the composites prepared on m-CIP is uniform and compact, the bottom is consist of uniform PANI particles with about 10 nm diameter, and the upper is deposited big PANI grains produced in the solution with about 100 nm diameter.

And Zavaliangos et al. [19] believed a number of possible sources (including prior compaction, elongated particles, gas pore pressure, interface porosity and crystallographic texture) of sintering anisotropy based on simulations of a two-dimensional array of particles.
The mechanisms that lead to densification are grain boundary diffusion, lattice diffusion from the grain boundary and plastic flow.

However, increase in the number and size of the defects in the composite and decrease in the relative densities (the ratio of the obtained density to the theoretical density) of the composite are usually difficult to be avoided when whiskers are added into the composite.
When the adhesive contact is interrupted, individual grains or their small aggregates are pulled out of the tool surface, leaving behind adhesive scars on the surface.
The former creates cracks, and the later greatly accelerates the propagation of the cracks and finally pull grains or their aggregates out of the tool surface.

A significant number of TRC is lost in the rock breaking process due to unreliable fixing.
Protodyakonov; Rock: - false roof – light grey medium-grained sandstone, thickness up to 0.5m, hardness f=4-6; -main roof - light grey medium-grained sandstone, thickness 0.5-0.8 m, hardness f=5-11; -floor: a layer of siltstone, thickness up to 0.3 m., hardness 4-6, and a layer of grey sandstone, thickness up to 1 m, hardness f=8-11 on the scale of Professor M.M.

Therefore in this paper, on the basis of light naphtha single column N2 purge separation process in our research group, the dynamic adsorption/desorption capacity of nC5/nC6 on self-made small grain 5A zeolites was investigated.
Materials and Methods Materials and reagents.Self-made small grain JH-4 zeolite, 40~60 mesh (0.3~0.4mm) particles; n-pentane, GR, provided by Aladdin (Shanghai) Co., Ltd.; n-hexane, AR, provided by Shanghai No.4 Reagent; light naphtha from a petrochemical company, mainly composed of C4~C6 alkanes, including C5, C6 isoparaffins, accounted for 65% or more, about 30% of n-alkanes and a small amount of C4 alkanes.
N2 adsorption/desorption isotherms was measured at 77K and the BET linear regression model was used to calculate the pore surface area, pore distribution was analysed by HK method; In the Poremaster GT-60 mercury analyzer 5A zeolites’ pore size distribution and pore number ratio and other parameters were determined.

Number of tensions carried by the road surface is called fatigue durability.
The rock is often dark, layered, and fine-grained, it consists of plagioclases, biotite, chlorite, amphiboles, cordierite, andalusite, quartz; it may also contain sericite, spinels, magnetite, corundum, and pyroxene.
Limestone powder fills in empty spaces between the grains of mineral mix.

A second mold change was a physical increase in the number of cooling channels in the mold.
However the fast quenched PET has an amorphous microstructure when cooled this quickly, so grain-grain stresses as commonly observed in metals are not a factor.

But its limitations are also obvious: (a) In the three decades after the reform and opening up in China, the living standard and dietary standards are improved, the grain-based food structure began to change; (b) Regional and even international exchange and cooperation are increasing, the free flow pattern of food and other basic living materials makes the importance of the food supply within the regions decline.
Especially for modern industrialized cities, the land resources are carrying more industrial development and population living needs, namely the size of a certain intensity of human activity, while the land carrying capacity based on grain output has lost its significance.
With the BNA develops and land use intensity increases, the number of patches will increase.