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The porous structure formed on implant surfaces is regarded as the most convenient and effective way of promoting osseointegration with bone tissues growing into the porous which was reported to be not less than 200 nm in size and enhances mechanical fixation for the prosthesis in hard tissues [6].
In accordance with these results one might conclude that the surface roughness and the wettability, both of which are significant properties for bone and implant integration, could be controlled and manipulated simply by changing the chemistry of the MAO bath in terms of Mg content.
The absence of any picks in XRD spectra representing any types of compound formed by calcium, magnesium and phosphorus means that the named elements are either in metallic forms or amorphous structure.

Guo Deyong et al. studied the coal and gas prediction based on coal seam structure index [8].
Journal of Natural Gas Chemistry, 2008, 17(2): 135-141
Research on coal structure indices to coal and gas outbursts in Pingdingshan Mine Area, China [J].

In view of this, this study take land consolidation project in Pan Town, NingHe, for example, set the three factors and three levels orthogonal scheme, combined with land consolidation project implementation, integrated engineering, chemistry and other improvement measures on soil improvement to explore efficient and low-cost improvement programs.
Slag and straw was selected as salt separated material, which will help the salt leaching, improve the soil structure nature, and promote the releasing of soil effective nutrient.
For amendments, the trial Wo Kang and PAM although able to effectively reduce soil bulk density, pH and salinity, organic fertilizer cannot only improve soil physical and chemical properties and soil structure, but also can significantly increase soil organic matter content, excite releasing soil nitrogen, phosphorus, improve soil effective nutrient content, is more conducive to crop and yield growth.

The capability to be dispersed individually and also outstanding surface chemistry has attracted remarkable attention from both researchers and industries.
Muscovite has become the most promising types of layered silicate reinforcement than others conventional layered due to its well-defined crystal structure, molecularly smooth surface, outstanding corona resistance, high aspect ratio and available in large amounts with relatively low cost 1.
Results and discussions Strength and stiffness properties Strength is referred to the material ability to withstand load 12 whereas, stiffness is a term to describe the desired force to attain a certain deformation of structure 13.

The ungrafted kenaf fiber had shown to possess the main morphological characteristics of kenaf fiber which are hollow, tube-like structure.
A large vessel can be seen in the centre of the fiber which suggesting the tube-like structure of the fiber.
Radiation Physics and Chemistry, 91 (2013) 125-131

But in fact electronic structure of SnO2 conduction band is different from that of TiO2 conduction band, the rate for photogenerated electrons to be injected from the phthalocyanine’s excited state into the SnO2 conduction band is much smaller than that into the TiO2 conduction band, which finally causes SnO2 photocatalytic efficiency lower than TiO2 photo catalytic efficiency.
This is electronic structure of SnO2 conduction band is different from that of TiO2 conduction band, the rate for photogenerated electrons to be injected from the phthalocyanine’s excited state into the SnO2 conduction band is much smaller than that into the TiO2 conduction band, which finally causes SnO2 photocatalytic efficiency lower than TiO2 photo catalytic efficiency.
Journal of photochemistry and photobiology A: Chemistry, 2002, 151: 195-199

Chaudhary et al. [17] also stress that, in reinforcing agent applications, RHA may have to be physically and chemically modified, since the particles have irregular shape and porous structure.
However, Silicas 1 and 2 were purer, exhibited lower LO, completely amorphous structure, and smaller surface area.
Khalil: Impact of the surface chemistry of rice hull ash on the properties of its composites with polypropylene.

It has been found that nickel oxide, showing rock-salt structure, is a metal deficit p-type semiconductor (Ni1-yO), the predominant defects being doubly ionised cation vacancies and electron holes [4-7].
Conclusions It has been shown that the influence of aliovalent impurities on the oxidation rate of nickel and on the defect structure of metal deficit nickel oxide (Ni1-yO) may satisfactorily be explained in terms of a doping effect.
Kröger: The Chemistry of Imperfect Crystals (North-Holland, Amsterdam, 1964)

The seismic analysis of steel buildings performed, considering Saudi building code provisions and loose granular soil shows the effect of soil-structure interaction on fundamental period and top building displacement [9].
Thus soil-structure interaction and friction between different material layers are included in the study.
El-maghraby, Characterization and assessment of Saudi clays raw material at different area, Arabian Journal of Chemistry. 3 (2010) 271–277. https://doi.org/10.1016/j.arabjc.2010.06.015

In the ionic surfactants occurs the exchange of the Na+ ion in the structure of the mineral clay[5], while in the case of the non-ionic surfactants, the adsorbing mechanisms prevail [6,7,8].
Van Olphen, An introduction to clay colloid chemistry, Krieger Publishing Company, Second Edition, Malabar, Florida, 1991
Lee, Enhancement of hydrocyclones performance by controlling the inside turbulence structure, Chemical Engineering Science, 57, 207 – 212, 2002