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College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, China 2.
Oil-Field Chemistry—Enhanced recovery and production stimulation.
Applied Chemistry Industrial, 2010,39, 538-540
Journal of Electroanalytical Chemistry, 2004, 566, 111-121
Materials Chemistry and Physics, 2007, 104, 74-79

This decrease in absorbance under light irradiation may be due to the cleavage of azo bond in the DR81 structure.
Cohen, Structural properties and electronic structure of low-compressibility materials:β-Si3N4 and hypothetical β-C3N4, Physical Review B 41 (1990) 10727-10734
Zhu, Enhancement of visible light photocatalytic activities via porous structure of g-C3N4, Applied Catalysis B: Environmental 147 (2014) 229– 235
Carlsson, Graphitic carbon nitride materials: variation of structure and morphology and their use as metal-free catalysts, Journal of Material Chemistry 18 (2008) 4893-4908
Margrave, Powder Synthesis and Characterization of Amorphous Carbon Nitride, Chemistry of Materials 12 (2000) 3264-3270

Aswe attempted to develop a stable low oxygen process, we pointed out the influence of some process parameters on oxygen concentration at the point of use, such as chemical flow rate, process time, process recipe structure and we investigated potential optimization thanks to inline oxygen concentration monitoring.
An additional degassing unit was installed on the chemistry line, before the point of use (membrane based oxygen separation unit).
We confirmed that before processing each wafer, the long pre-dispense is necessary to flush the remaining oxygen in the line before to send the chemistry on the wafer.
Comparison of real time oxygen monitoring and process recipe time sequence allowed us to identify that it was due to the additional pre-wetting step with water before chemistry dispense.
Fig. 1: Oxygen concentration depending on chemistry flow rate, recorded for 20min process recipe (1 wafer/run) a b a Fig. 2: Illustration of recipe optimization to avoid oxygen concentration increase during process. a_initial recipe. b_ after optimisation/“Ch in line”: chemistry go to drain.

TuffTek company (Nano Mech Inc.) has copied the idea of a nodular structure like the one found at a lotus leave and transfered it to cutting tools, combining hard phases used for cutting with soft phases used for lubrication.
The problem was to find proper solutions for realising the copper`s surface nanostructuration at a nanometric scale through methods for creating nodular structures (hard composites being deposited around the created nanonodes).
These choices were made based on previous experiences the researchers from “Transilvania” University of Brașov – Chemistry Department have had in their past studies.
Lide, Handbook chemistry and physics, Cleveland – Ohio, CRC Press, 57th Edition,1976 [2] T.
Isac, Obținerea și caracterizarea straturilor subțiri de sulfuri de cupru cu aplicații optoelectronice, University of Bucharest, Faculty of Chemistry, Anorganic Chemistry Department, 2007 [6] S.

Journal of Polymer Science Part A: Polymer Chemistry, Vol.40 (2002), p.2093
Journal of Polymer Science Part A: Polymer Chemistry, Vol.40 (2002), p.3350
New Journal of Chemistry, Vol.24 (2000), p.865
Journal of Polymer Science Part A: Polymer Chemistry, Vol.38 (2000) No.S1 p.4805
Journal of Polymer Science Part A: Polymer Chemistry, Vol.38 (2000), p.337

Food Chemistry, 106(2), 559-563.
Food Chemistry, 68, 109-113.
Food Chemistry, 122(1), 49-54.
Tea Polyphenols Chemistry.
Tea Polyphenols chemistry.

The storage moduli of composites with quasi constrained layer structures were higher than that with non quasi constrained layer structure.
Dynamic mechanical analysis showed that the composites with quasi constrained layer structure exhibited perfect damping properties, in which the quasi constrained layer structure worked like the active constrained layer damping structure in damping materials and structures.
Dong, et al.: Journal of Materials Chemistry Vol. 19(2009),p. 2817
Dong, et al.: Journal of Materials Chemistry Vol. 19(2009),p. 2817
Singh: Composites Structures Vol. 92(2010), p. 233

Wet chemistry methods have attracted lots of attention from materials scientists and chemists.
Surfactant assisted wet chemistry methods have been recently applied to the synthesis of ZnO nanorods with good crystallinity, chemical stability and thermal stability.
The structures, morphology and the Raman spectra properties of ZnO microcrystals are investigated.
Results and discussion The structure of the final product.
However, no matter what change one may wish to make during synthesis, the crystal structure of final product does not change: we all get hexagonal wurtzite structured ZnO.

This doping will alter the electronic structure and properties of pure graphene.
Although size particles play a role in the oxygen reduction reaction, this study will simplify the Ag structure.
Figure 2 and 3 shows the band structure and partial density of state (PDOS) for G-Ag model, respectively.
Figure 5 shows the band structure for N3-Ag and P3-Ag.
Siddique, Prospects and challenges of graphene based fuel cells, Journal of Energy Chemistry, 39 (2019) 217 – 234

Circular dichroism of polysaccharide relates to polysaccharide molecules’ glycosidic bond type and space structure (i.e., spiral, crimp and rod structure) [23].
And the key of it is the screening of polysaccharide of “activity structure” or the chemical modification of polysaccharide[19].In the study of polysaccharide structure, however, no single method can measure the polysaccharide structure effectively and comprehensively.
The analysis of the polysaccharide structure will also have a larger breakthrough, but further study to the relationship between its structure and activity is still needed.
(In Chinese) [14] Ribeiro A,Vieira RP,Mourao PA,etal:Carbohydrate Res Vol. 255(1994),p. 225-240 [15] Rixia Bai, Quan Guo: Chinese Journal of Analytical Chemistry Vol. 27(1992),p. 969-971.
(In Chinese) [22] Yibin Zhou, Dongfeng Wang, Xiaochun wan,etal: Chemistry Vol.(2008) [23] Yueqiu Wang, Xin Zhang, Min Wei,etal: Journal of Molecular Science Vol. 25(2009),p. 55-59.