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Introduction A number of biocompatible materials are used nowadays for implant production: titanium, stainless steel, porcelain, bioceramics, alumina alloys and a number of polymers.
After 1h anodization the larger part of the sample’s surface is covered with nano-dots or nano-rods depending on the orientation of particular grains (Fig.2a).

The microstructure, such as the thickness and the scattering length densities of TiN layer and AlN layer, number of periods, the roughness of surface and interface, were obtained from fitting the experimental data.
Levy, Enhancement of mechanical properties of TiN/AlN multilayers by modifying the number and the quality of interfaces, Surface and Coatings Technology, 124 (2000) 210-221
Ikuhara, Microstructures and grain boundaries of (Ti,Al)N films, Surface and Coatings Technology, 107 (1998) 41-47

Inside the porous ceramic tube, as the fluid flow through porous media, the gas flow in porous media can be divided into Darcy flow and non-Darcy flow under the Rek (Reynolds number) based on the permeability.
(5) (6) where u is gas velocity; up is particle speed; ρ is the gas density; ρp is the particle packing density; dp is the particle grain diameter; Re is the particle relative Reynolds number; Fs is the other reaction force.

The contact zone and the maximum number of nodal columns were calculated on the basis of the geometry of both wheels (Fig. 1.1 and Fig. 1.2).
Plaster Casting Avg. for Location 1 Location 2 Location 3 Location 4 (µm) Wheel (µm) (µm) (µm) (µm) (µm) 12.2 13.1 12.6 14.1 11.6 14.0 Table 2.2 Comparison of Plaster Casting and Wheel Surface. 2.10 Diamond Profile A cone-shaped diamond profile was used, and the number of diamonds was set to 100, resulting in a spacing of four diamond diameters apart along the circumference of the truer.
This is explained by the limitation of the virtual model, which was designed to simulate purely kinematic and geometric interactions between the truer diamonds and the grinding wheel surface, rather than from crushing or fracturing of the grinding wheel grains and bond structure.

The acoustic waves of grinding are mixtures of several acoustic wave sources, such as grain fracture, coolant turbulence, materials deformation and thermal expansions.
The decomposition of a signal, whose length equals an integer power of two (N = 2p) on an orthonormal wavelet packet basis (WPB), results in the same number of coefficients as the original signal.
Any node of a binary tree is labelled by its depth j and number p of nodes that are on its left at the depth j.

Ruan Benqing6（1998）defined it that the water quantity (itself) in certain areas with direct or indirect way of resources can continue to support the number of people in ensuring the normal social cultural norms of material life level in different time scales in the future and some production conditions.
Varis 14（2001）took the development and utilization of water resources as the core, and analyzed the pressure resulted from the increasingly rapid industrialization, growing demand for grain growth and environmental degradation and so on in Yangtze River area, and compared the social and economic status of the Yangtze River basin with the carrying capacity of water environment preliminary by consulting to the development history in different areas. 2.2 The research progress at home The study of water resources carrying capacity in China began in the late 80s, domestic scholars through a series of research projects and work, gained great progress and some preliminary results.
In the rain and flood season, on the one hand, to ensure the security of the reservoir, the reservoir has a great number of drainage; on the other hand, the water down through the river which leads to dry and lacking of water.

A 3D FEM model was implemented in ABAQUS Explicit 6.7 software to simulate the LSP events: starting from the description of laser shock wave propagation and the description of surface deformation induced by a single laser-shock event; describing in a second step the residual stress field induced by a large number of impact overlaps.
The step size of the PSD (position sensitive detector) was 0.047°, the angular analysis zone in 2θ is 18.8°; To minimize the texture and grain size effects, ψ oscillation has been carried out for each ψ angle with an amplitude of ± 6°, 17 ψ angles have been used for each stress analysis direction.
The step length was set to 0.05° and the step number varied as a function of diffraction peak width.

The increase in hardness was attributed to uniform dispersion of B4C particles and fine grain size of the aluminum matrix.
Bhandare and Sonawane [10] prepared aluminum matrix composite by stir casting method and concluded that for the uniform distribution of the reinforcement blade angle should be 45° to 60° and number of blade should be 4 and also that at full liquid condition the uniform distribution of reinforcements is difficult and for good wet ability we need to keep operating temperature at semisolid stage and also the preheating of moulds helps in reducing the porosity and enhance mechanical properties.
Figure 3 Micro-Vickers hardness numbers Figure 4 Ultimate tensile strength of composites Tensile tests were carried out using computerized uni-axial tensile testing machine as per ASTM standards.

In fact, under ideal conditions, E-coli cells can double in number after only few minutes [5].
Furthermore, a very large number of E-coli bacteria can be grown in a small space [6].
Onstotta, Kob C-HA et al (2002) Theoretical prediction of collision efficiency between adhesion-deficient bacteria and sediment grain surface.

Introduction In the structural analysis of disordered materials, x-ray and neutron diffraction techniques are used to directly measure local and intermediate-range or nanoscale structures, atomic bond lengths and the coordination numbers by the Fourier transformation of the total structure factor S(Q) (Q = (4π/λ)sinθ, 2θ: scattering angle, λ: the photon or neutron wavelength) to a pair distribution function g(r) using the following equation, (1) where ρ is the total atomic number density and M(Q) is a modification function introduced to reduce termination errors in the transform.
Crystallization starts simultaneously from many such nuclei in the amorphous mark (NaCl fragments) and lead to an aggregation of small crystal grains.