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Zaharescu 1 1Institute of Physical Chemistry "I.G.Murgulescu", Roumanian Academy, 202 Splaiul Independentei P.O.Box 12-194, 77208, Bucharest, Roumania 2National Institute for Research and Development in Microtechnologies, P.O.Box 38-160, 72225, Bucharest, Romania Keywords: sol-gel method, alkoxide route, SiO2-ZrO2 films, optical and structural characterization Abstract.
The sol-gel process offers also a versatile method for the preparation of optical quality films with controlled refractive indexes and small thickness, allowing a nanoscale control of the film structure. ` SiO2-ZrO2 films have many applications being materials with interesting optical and photonics properties (waveguides, micromirrors, transducing layers for waveguide-based gas sensors).

While hBN belonging to hexagonal, has layered structure that looks like graphite.
Sun: Progress in Solid State Chemistry.

The CSM, which was prepared by the inverse emulsion polymerization principle with MBAA as crosslinking agent , has the three-dimensional network structures, uniform particle size, roundness of the spherical, outstanding adsorption property , and excellent biocompatibility.
Studies on Preparation and Swelling Behavior of Carboxymethylchitosan Ionic Complexing Microspheres, Chemistry, Vol.5 (2004), p.359 (in Chinese).

And they are of so many characters like unusually high strength, high fracture toughness, excellent corrosion resistance, wear resistance and nonmagnetizability and are used widely in weapon, chemistry engineering, and mechanics, etc. [1,2].
In this theory the critical resolved shear stress or flow stress is written as τ=τG+τ*, where the term τG is depended on athermal barries, i.e. long –range barrier, determined by the structure of material.

Introduction Steel 35CrMo is often used as important structure pieces that run in high temperature or heavy load condition (such as turbine rotor and backbone).
As a result, a coating layer can be obtained, which can improve the physical, chemistry and mechanical properties of the work-piece [1, 2].

TEM images at higher resolution show the presence of an ordered structure in the shell with a 7 Å period.
Yeh, Chemistry Letters, (1998) 1183-1184

Starting from a defect, it follows the reconstructed step structures with long ordered terraces.
A. de Heer: Journal of Physical Chemistry B Vol.108(52) (2004), p.19912 [4] C.

(a) n = 1800r/min (b) n = 2200r/min Fig. 4 CO emission of three kinds of fuels respectively compared at 1800r/min and 2200r/min Conclusion Where there is not any changes in the engine structure, adding a certain percentage of GDE into diesel fuel can significantly reduces smoke emission.
Division of Petroleum Chemistry, 2006, 51(2), p. 862–864

The overall structure of the remote experiment According to the different characteristics of the C/S mode and B/S mode, the remote control and video surveillance design of the system is supplied with C/S mode, fast response and strong interaction; Laboratory management system is designed with B/S mode, system compatibility, easy operation, low maintenance costs.
Pan, System identification and modeling, China Chemistry Press, Beijing (2001)

Aspartic acid (Asp) is one kind of amino acids, which contains –R structure of carboxyl function group.In this paper,the formation of HAAs from Asp in the chlorine disinfection process is introduced.
In disinfection by products in water treatment: the chemistry of their formation and control.