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As seen in Fig. 1, elongated grains are observed in the extruded material, which suggests that recrystallization did not occur during or after the hot extrusion.
The vertical and lateral forces Fz and Fy are determined using Eq. 1 when these forces are at a maximum during straight skating: Fy = Fz = X xW/n (1) where, X is the body weight ratio, n is the number of wheels in front or rear positions (= 2), and W is the body weight.

Introduction Zn- Al- Cu alloys are characterized by a number of advantageous properties: low melting point , good castability , high strength and hardness, good fatigue strength, low density, good tribological properties [13-14].
Phase T' is formed both in interdendritic spaces and at grain boundaries.

Pavement Small Test Before The first surface layer with two copies of slurry and prep polymer Sort by production batch, and then sampled in plastic test as well as grain silk into a plastic test according to the on-site environmental conditions.
This method is abroad has a large number of new construction technology, which avoids the defects of particles with a polyurethane adhesive of the surface layer is not stronger, than with conventional processes, it does not easily fall off.

A simple model for abrasive wear can be demonstrated by using Archard’s equation; V = k1PLH-1 (1) Where, V is volume of material removed by wear (mm3), K1is dimensionless wear coefficient or wear rate, P is applied normal load (N), L is sliding distance (m), and H is Vickers hardness number of the material.
Preferential binder removal with some damage of WC grains was observed for the HVOF coatings in Fig. 3 (a) and (b).

Considering the concurrent action of the nucleation, diffusional growth, motions of the PPDs and the convections of the matrix liquid, the microstructure evolution may be described by a size distribution function , which is so defined that gives the number of minority phase droplets (PPDs) per unit volume at position and time in a size class from to . obeys the following continuity equation during solidification [11]:
Roven, Dispersion of soft Bi particles and grain refinement of matrix in an Al-Bi alloy by equal channel angular pressing, Int.

The grain size distribution was studied using laser scattering technique (Cilas 1064).
Furthermore, the higher surface area of the smaller particles, for alloy prepared with NbH (C+M), increases the number of bonds among the particles and promotes more efficient solid-state diffusion processes [15].

Introduction Electron beam welding (EBW) has a number of undeniable advantages for application in space environment.
A typical cast weld structure and a fine-grained Fig. 3.

One of the primary problems in scheduling the program efficiently for smart grid computing system is to partition the program into a set of appropriate grain size jobs that can be assigned to different grid nodes for parallel execution.
In the grid environment, the total number of storage requirement of all the jobs distributed to one node shouldn’t exceed the resource capability of that node, namely ∑ sixi,k≤rk, 1≤k≤n.

A number of methods have been suggested for synthesizing SnO2 nanoparticles, including sol-gel processes and microemulsion-, solvothermal-, hydrothermal-, sonochemical-, microwave radiation-, and spray pyrolysis-based techniques [5,12-18].
Although the broad peaks observed at ~30° and 55° were indicative of low crystallinity and nanosized grains, the peaks could be indexed as belonging to 2SnO∙(H2O).

(5) Sugar grains of sand.
As the reasons of the number and location of boreholes, here is a risk of sampling.