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Continuous CO2 laser irradiation is exploited to realize nanocrystallization of Fe based amorphous alloys Fe73.5Cu1Nb3Si13.5B9 by overlapping of the heated areas, and to get homogeneous ultrafine grains of about 10nm with a bcc α-Fe(Si) structure, which is the foundation of the excellent soft magnetic property.
It turned out to be α-Fe(Si) phase with a bcc structure in the amorphous matrix, and as indicated in fig 1, the three peaks were corresponding to crystal planes (110), (200) and (211), though a little variation in peak values existed between laser irradiated specimens with different power.
As indicated in diffraction pictures, the grains after laser irradiation (71w) mainly presented in a bcc α-Fe(Si) structure, which was consistent with XRD results above.
Barb: Journal of Physics and Chemistry of Solids Vol. 56 (1995), p. 79 [12] A.
Nelson: Materials Chemistry and Physics Vol. 81 (2003), p. 390 [13] G.

The crystal structure of AgCoO2 from XRD is monoclinic.
And the same time the crystal structure and SEM micrograph of AgCoO2 powder was tested and characterized.
It is clear that all diffraction peaks can be indexed to the delafossite structure of AgCoO2.
The AgCoO2 particles is delafossite structure and single particle is sheet and the size is 100nm.
Zanhong, et al, Preparation of delafossite-type oxide by hydrothermal method, Progress in chemistry 22(2010) 352-357 [4] J.

The band structure of graphene with adsorbed hydrogen atoms is calculated by the Green's function method.
The change of the band structure of graphene as a result of atomic hydrogen adsorption has been studied.
When the concentration of adatoms formed the gap in the electron energy spectrum, it is observed the small shift band structure over the Fermi level.
Carbon nanotubes and related structures.
Kvantovaya mehanika i kvantovaya himiya (Quantum mechanics and quantum chemistry).

However, decomposition reaction often operates at higher temperatures than the decomposition one to assure the formation of a crystalline structure [39].
Murozono, Crystal structure analysis of spherical silicon using X-Ray pole figures, Solid State Phenom. 93 (2003) 249-256
Walsh, Some mechanistic problems in the kinetic modeling of monosilane pyrolysis, The Journal of Physical Chemistry. 96 (1992) 10856-10862
Rabinowtiz, Silicon particle formation in pyrolysis of silane and disilane, Israel Journal of Chemistry. 36 (1996) 293-303
Journal of Physical Chemistry, 98(1994) 10138-10147

“Top down” approach is a process breaking up bulk materials using milling, nanolithography, or precision engineering to generated a nano-level structures.
Emmy Hainida, Antioxidant capacity and phenolic content of spinach species (Amaranthus sp.), Food Chemistry. 94 (2006) 47-52
Willian Koh, Antioxidant activities of aqueous extracts of selected plants, Food Chemistry. 99 (2006) 775-783
Bo, The radical scavenging activities of radix puerariae isoflavonoids: A chemiluminescence study, Food Chemistry. 86 (2004) 525–529
Wang, Antioxidants activity and phenolic composition in selected herbs, Journal of Agricultural and Food Chemistry. 49 (2001) 5165-5170

Ezzouar, Alger, Algeria a hadjersi@yahoo.com, b ngabouze@caramail.com Keywords: Surface structure, Porous silicon, Optical behaviour, Metal-assisted chemical etching.
Based on SEM (Scanning electron microscope) and EDX (Energy-dispersive X-ray) characterizations, the evolution of surface chemistry during etching of Si has been investigated.
The porous silicon films produced by this manner are different in structure to porous silicon films by anodic etching where the pores are tubular and perpendicular to the surface.
Indeed, it was shown that porous silicon film produced by etching in solution of NaNO2 in HF and CrO3 in HF were similar in structure to porous silicon films produced by anodic etching [8].
The structure of the such surface is depicted in figure 5.

This may be due to proper augment of temperature could attribute to a looser structure of the fibres and make a better swelling extent.
However, the excessive tiny structure, letting cracks exists, could impossibly hold the water and oil.
This could be explained by the downsizing action of natural dietary fiber, causing the fibrous structure weaken, with centrifugal force, the fiber itself cannot hold adequate water.
Effect of particle sizes on Functional properties of dietary fiber prepared from sugarcane Bagasse, Food Chemistry. 80 (2003) 221-229
Baik, Isolation and characterization of cotyledon fibers from peas, lentils, and chickpeas, Cereal Chemistry. 80(3) (2003) 310-315.

It is one of the important green chemistry processes to prepare multifunctional polymers.
The X-ray diffraction proved that the used method to prepare the networks gave semi monocrystalline structure.
Windle, Electrochemical capacitance of a nanoporous composite of carbon nanotubes and polypyrrole, Chemistry of Materials. 14 (2002) 1610-1613
Farzi, Synthesis of PPy–silver nanocomposites via in situ oxidative polymerization, Journal of Nanostructure in Chemistry. 4 (2014), 1-5
Bragg, X Rays and Crystal Structure, G.

There can also be a significant deterioration of the pore structure of activated carbon, which reduces the specific surface area available for adsorption.
Compared to the thermal regeneration, there is no destruction of the carbon surface or pore structure due to no pyrolysis and oxidation can occur.
Less carbon loss because of there is no destruction on the original structure of activated carbon, and the adsorptive capacities of the regenerated activated carbon is still close to those of the original carbon after many cycles [13].
It is generally operated at a microwave frequency of 2450 MHz Microwave regeneration offers a great many of advantages for activated carbon regeneration, including homogeneous and quick thermal reactions due to its capability of molecular-level heating [15], a superior regeneration after a successive regeneration cycles because of no damage to the pore texture and surface chemistry of activated carbon.
Sci Vol. 34 (2010), p. 49 [16] F K Yuen, B H Hameed: Advances in colloid and interface science Vol. 149 (2009), P. 19 [17] M Nüchter, B Ondruschka, W Bonrath, et al. : Green chemistry Vol. 6 (2004), p. 128 [18] J Sun,X Z Liu , L Peng.

At molecular sorption the occluded substances are located between the planes of packages, destroying initial akvakompleks, but not changing the structure of layers.
Results of researches of mineral structure of samples are presented in Table 2.
Results of a research of element structure (in terms of oxides of samples) are presented by the EDRFC method in Table 3.
Research of structure of porous carbon materials from aromatic predecessors by method of the Raman spectroscopy, in: Coal chemistry and ecology of Kuzbass, Kemerovo, 2013, pp. 48
Muhametdinova, New modified sorbents on the basis of clay for sewage treatment from iron ions, Water: chemistry and ecology. 32 (2011) 66-68