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Marquezc School of Chemical Engineering and Chemistry, Mapua University, Muralla St., Manila, Philippines, 1002 ajanrcmateo@yahoo.com, bsalutannalou@gmail.com, cmenandro.marquez@gmail.com Keywords: Nickel oxide, surfactant, sol-gel synthesis, nanostructures.
The samples were also analyzed via X-ray diffractrometry (XRD) analysis to determine the species of nickel oxide and its crystal structure.
The collected sample was characterized using SEM XRD analysis to determine the material’s crystal structure.
Thus, addition of the surfactant modified the structure as expected due to the surfactant acting as template in the formation of nanostructures.
Like what happened to the NiO added with Tween 80 in which significant blue shift happened due to the larger nanospheres formed compare to the other nanostructures formed while the one added with CTAB have its peak almost the same as the pristine one this is due to nickel oxide naturally having a cubic crystal structure while the one added with CTAB has the same cubic like structure.

The morphology and the crystal structure of the synthesized compound were characterized using SEM and XRD, respectively.
Result and Discussion Fig. 1 shows XRD analysis of the crystal structure of LiFePO4/C prepared at the sintering temperature of 850oC (a), 870oC (b), and 900oC (c).
LiFePO4 has an orthorhombic crystal structure with space group Pnma and lattice parameters of a = 10.332 Å, b = 6.010 Å, and c = 4.692 Å.
LiFePO4 has a structure of olivine.
Based on the XRD characterization, LiFePO4/C has an orthorhombic crystal structure with a specific capacity of 17,6 mAh and 40,3% of the capacity loss.

Montmorillonite is a silicate minerals which has 2:1 layered structure .
SEM image of Na- bentonite and coated bentonites Figure 5 shows that after modification the structure of bentonite is irregular and the contour lines are clearer.
It can be characterized by the first peak is the layer spacing of the bentonite, and the modification did not significantly increase the interlayer spacing of bentonite, other structures did not produce significant changes.
The results of the surface area, scanning electron microscopy and X-ray diffraction analysis showed that the modified bentonite did not change the basic structure of the bentonite.
“In Chinese” [10] Yong Ma, Ende Wang, Hong Shao: Applied Chemistry.

Existence of porosities in P/M structures is one of the particular properties which apart them from the other parts due to its exclusive production process.
Nitriding as a surface modification process improves properties through conversion of chemical structure during phase transformation which is introduced as a thermochemical process.
During nitriding of steels, two different structures are being formed from surface to core, known as the compound layer and diffusion region.
Constitution of the other γ' phase (with lower amount of at% N) was due to diversity of sintered microstructural phases, especially presence of some preventive phases against nitrogen diffusion such as nickel and cupper rich regions with cubic structures which have been effected on reduction in the nitrogen diffusion ability and tend to formation of cubic γ' (Fe4N) structure .
Kang: Journal of Materials Processing Technology Vol. 100 (2000), p. 110 [3] Akira Fujiki: Materials Chemistry and Physics Vol. 67 (2001), p. 298 [4] Y.

Ostwaldi tn 1, Tartu, Estonia, 50411 2Institute of Technical Physics, Faculty of Materials Science and Applied Chemistry, Riga Technical University, P.
E` centres cause repulsive forces which expand the Si wafer and give rise to the deflection in Si-SiO2 structure.
In this interval of oxidation temperature, the internal mechanical stresses in the Si-SiO2 structures change non-monotonously.
To confirm this, influence of oxidation temperature on tensile stresses at Si side of the structure and its influence on the interface properties was evaluated.
C-V characteristics of MOS structures (Fig. 7) and XPS spectra of Si-SiO2 samples were measured before (Fig. 8) and after (Fig. 9) Si3N4 deposition.

To determine the influence of chemical composition and thermomechanical treatments a series of experimental tests were conducted to evaluate the structure and mechanical properties.
Results and discussion 3.1 Chemical composition modeling, elaboration and continuous cast The chemical composition design was set up (by simulation software) from the steel denoted P5.1 (Table 1) which has the lowest real cost of the second group studied chemistry with only 0.20% Ni content in addition to S420N/NL that confers high toughness at low temperatures.
The optical microscopy highlighted a bainitic structure in the area near surface of slabs (Fig.3a) and a ferritic-pearlitic structure in the middle of slabs.
On the other hand, the grain size of pearlitic and ferritic structure became 9.5 -10 after normalization from 8 (before normalization).
Structural monitoring of a wind turbine steel tower – Part II: monitoring results, wind and structures 2012;15(4)

Change of initial conditions of sol-gel process gives opportunity to influence on kinetics of gel formation and consequently, on structure and properties of final materials.
Many aspects of silica colloidal chemistry are under discussion still.
The introduction of polyoxometalate into silica matrix doesn’t destroy the structure of them.
The oscillations of heteropolyanion structure are observed at 960 - 939 cm-1.
These results indicate that molecule structure of substance remains at doping of initial matrix.

Synthesis and Properties of a Novel symmetrical Diarylethene with Bromine Atoms Fang Duan,Xue Li and Gang Liu* Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.
The structure of compound 1o was characterized by 1H NMR spectroscopy.

Spectrophotometric method for the assay of chlorhexiidine acetate Yanhong Lei College of chemistry, Jiujiang University, Jiangxi,Jiujian,332005,china lei_4300@163.com Keywords: UV-spectrophotometry;chlorhexiidine acetate;drug analysis.
chlorhexiidine acetate had fixed structure shown in table 1 Molecules for two valence of cation surfactant, better than quaternary ammonium salt cationic surfactants ,Because of its wide sterilization, low toxicity, no stimulation to the skin,chlorhexiidine acetate was widely used in the main components of the compound disinfectant,that common skin mucous membrane and oral wascommonly used.chlorhexiidine acetate had wide antibacterial and sterilization , gram-positive bacterium and negative bacteria were quite strong bacteriostasis, sterilization effect. chlorhexiidine acetate could kill all kinds of bacteria breeding, low concentration of possessing had a bacteriostatic action, can effectively inhibit anaerobic bacteria and aerobic bacteria mixed infection of oral infection.chlorhexiidine acetate had good antibacterial effect on staphylococcus aureus, escherichia coli, verdigris false single spore bacteria and candida albicansIn medicine, chlorhexiidine acetate was widely used in diminish

The surfaces were obtained from the relaxed bulk structure.
Kartio, E.Suoninen: “FTIR And XPS studies of Surface chemistry of pyrite in flotation”, Proceedings of the XIX International Mineral Processing Congress, 1995, 3: 35–38