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Castro [11] concluded that the structure and formation of new phases is highly dependent on nucleation and growth conditions, grain boundaries, localized impurities or any general kind of surface imperfections.
Scanning electron microscopy images show a number of needles arising at the carbon phase, with a visible interfacial boundary (Fig. 4).
The structure of Al/C/TiC samples exhibits a number of precipitation needles, similar to that of Al/C samples (Fig. 7).
A further course of the reaction between the matrix and the reinforcement revealed an arrangement of a number of Al4C3 crystals.
Moreover, the morphology of the phase components depends on the number of nuclei formed in the previous processes.

The number of cells per milliliter in this suspension was then counted using a cell counter.
The numbers of colonies were counted manually as shown in Fig. 3.
Considering the radiation with high dosage (above 4 Gy) alone could kill most cells, the initially plated cell number was varied with the radiation dose.
The same number of cells were plated for each control group.
Such greater enhancement effects can be attributed to the unique microstructures of HAuNPs, a polycrystalline sub-20nm Au shell with 5 nm grains, leading to a higher catalytic activity of Au on radiolysis of water and biomolecules whose products could damage the DNAs inside cells.

The obtained effect is due to the formation of a large number of substrates for the heterogeneous nucleation of silicon crystals.
It is also worth noting that structure of the silumin cast from the lowest temperature includes a coarse-grained α(Al)+β(Si) eutectic, surrounded by silicon crystals and oblong precipitates of the AlFeSi phase.

There are a number of basic material elements that constitute a flexible circuit as Figure 1 illustrates: a dielectric substrate film (base material), electrical conductors (circuit traces), a protective finish (cover lay or cover coat), and, not least, adhesives to bond the various materials together.
Lower thickness of EN thickness will produce a more nodular surface morphology giving rise to higher penetration of immersion gold along the electroless nickel grain boundaries.

Increa- sing the number of YSZ particles resulted in larger surface areas of particles, and reduced binders around every particle, thus the bending strength decreases.
Fig. 7 shows a uniform grain distribution with a few isolated pores on the boundary, and straight boun- daries higher density is due to suitable sintering temperature (1873K) and holding time (2h).

The grain size of the ironstone was 1.7 mm~3.3 mm, and its microhardness was 550～630Hv.
As a result, on one hand, the abrasive particles push the tested material to the sides of the furrow to form plastic deformed ridges; on the other hand, and the material which was pushed to the frontage of the furrow formed plastic deformed wedges.With the increment of the number of furrow, the more and more materials were accumulated at the local area.

The homogeneous and uniform microstructures were observed for both surface and fracture surface of Li2TiO3 ceramic pebbles, and the average grain size is about 5mm.
However, a number of open pores with interconnected paths in pebbles body can be also observed, and the average diameter of those pores is about 2mm.

Candidate Composites For Structural Gas Turbine Elements A number of composite approaches have been developed to toughen brittle high temperature structural ceramic materials.
When composites were synthesized with elongated Si3N4 grains fracture toughness can reach to 15 MPa m1/2 [22].

Introduction Precision seeding is defined as the placing of desired numbers of seeds at a precise depth and spacing.
Precision seeding is an advanced modern method for planting crops and an inexorable trend of agricultural development, and is an important measure to increase agricultural production and reduce grain production costs Pressing can reduce the large soil pores and moisture evaporation, conserve soil moisture and improve soil capillary action to create favorable conditions for seed germination and growth [2].

The purpose of the research of intelligent steering wheel: In recent years automobile industry develops very rapidly, and road cycling number is increasing year by year, traffic accident also happens frequently, which means a great hidden danger for drivers’ personal safety, the safety awareness for many drivers is weak, and many phenomenon of drunk driving and fatigue driving appeared, which seriously threats the safety of themselves and other people.
As for the really used electrode sensor, the right half part and the left half part in the inner side of the steering wheel are respectively coated with the conductive adhesive that contains Ag fine grain, so as to follow the trail of the heart rate change measured.