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Agostino Abbate applied it to the inhibition of noise of ultrasonic signal in coarse-grained materials [4], based on the known input signal, the input signal or some theoretical waveform, such as Morlet, Gaussian, Mexican Hat as the mother wavelet.
The input layer neurons number is the number of features and the output layer neurons number is generally the defect type number.
Therefore the number of neurons must be selected reasonably.
Vicen R process ultrasonic testing signal using the method of artificial neural network for structure of coarse grain materials and the SNR is promoted [13].
It needs a large number of samples of natural defects to train the artificial neural network fully and perfectly.

The depth of penetration of the indenter was automatically measured by the testing machine and then converted to a hardness number.
Type 6703 Charpy test machine, serial number E6742414 with capacity of 298.364 Joules at Stress Analysis Laboratory University of Lagos was used for the Charpy impact test.
Figure 6: X-ray diffraction profile of 2wt% palm kernel shell nanoparticle reinforced aluminium composite 3.3 Microstructure and Chemical Composition of Palm Kernel Shell Nanoparticle Reinforced Al-Mg-Mn Composites Micrograph of Al-Mg-Mn shows tiny dendritic grains having numerous grain boundaries.
Being numerous, the Al grain boundaries and the solute phases are potential barriers to dislocations which is a basis for strength enhancement.
Well defined grains of different colours distinctly separated by boundaries are observed in Fig. 8.

The grain size of facing sand is from 45 to 75 grit number, and the grain size of backing sand is from 25 to 45 grit number.

There are diamond grains on the end face of the tool and at the edge.
The processing mechanism includes direct hammering of the tool end face against the workpiece surface and plowing of the diamond grain on the tool end face against the workpiece surface before the tool was damaged.
The correlation between force amplitude and drilling holes number Data Analysis.
Fig.5 shows the correlation between force amplitude and drilling holes number.

Introduction Amorphous alloy is an emerging soft magnetic material without crystalline grain and grain boundary.
Table 1 Specifications of three kinds of amorphous cores Items Slotted core Unslotted core Winding core Cutting core Toroidal core Motor size[mm×mm] Ф100×L60 Ф100×L50 Ф100×L30 Stator coil number 12 9 9 Rotor pole number 8 6 6 Max speed[r/min] 3000 2000 14000 Rated power[W] 200 150 400 Efficiency 85% 90% 90% As a leader in motor and generator industry, Light Engineering Inc (LE) is the only company which has industrially manufactured amorphous motor.

However, a number of absorption centers formed in the zinc oxide grain during long-term light and ionizing radiation exposure.
According to reference [1], the radiation stability of nanoparticles depends on the balance of free energy from grain boundaries and point defects.
The scattering efficiency should extremely dependent upon the particle size distribution of the pigment, but the mechanism of the reflectance increases as the number of first-surface reflections and the amount of multiple scattering increases does not find here a complete agreement due to the complexity of the object which is a microparticle consisting of nanoparticles.

It is known that thin films deposited by pulsed laser ablation using ultraviolet light are uniform and results in a smaller number of droplets due to the high energy of the light [1,2].
It is relatively easy to control the thickness of the thin film, because the thickness is proportional to the number of light pulses.
The grain size distribution of the thin film deposited in O2 gas including oxygen radicals was relatively uniform Fig.1.
The distribution of grain sizes of the thin films deposited in O2 gas including oxygen radicals was found to be uniform and the surface flat.

A number of protective thin films were deposited on metal substrates by sol-gel process [1-9] and the influence of composition, withdraw speed, temperature of thermal treatment, number of dip-coating on the metal substrates performance have been investigated intensively, but rarely concern the influence of residual stress on the metal substrates performance.
Principle of X-ray diffraction for the measurement of residual stresses When the crystalline grain is even, the orientation is irregular and the residual stress doesn't exist, Debye link of the diffraction is an even and successive ring in crystal material.
However there is a balance residual stress in crystal material, the lattice plane separate distance of the same group in different crystalline grains alter regularly with the alter of these crystal planes contrasting the orientation of the stress.

The quality of the alumina material were into the standards scope ; Grain size under 2 μ , porosity as well as density were low. .
During the first year of experience , a number of alumina component fracture were recorded .
These reports are limited in numbers and alumina ceramic material appears to remain one of the safest materials in total hip replacement.
To conclude not only alumina material quality ie grain size , porosity , density , are highly relevant to insure safety , but design is also very important ; Alumina thickness seems also a very relevant parameter , this could explain also failures encountered and published with polyethylene back alumina design.

It is well known that electrons in a metal are distributed over a number of energy bands, filling most of them completely.
The precise number of free electrons depends on the detailed configuration of energy bands [1].
The alternation of energy bands and the limitation by so much grain boundaries of aluminum nano-film cause an abrupt decrease in the carrier density.
Generally, the grain size of thin films decreases with decreasing thickness of the film [14], resulting in decreased limitation by boundaries and in increased carrier density obtained with Hall effect method [1, 15].