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If we amplify the structure unit to maceral level, these questions will turn to simplified.
[2] WEI Xianyong, ZONG Zhimin, QIN Zhihong, and CHEN Chong: Coal liquefaction chemistry (Sciense Press.
Journal of Fuel Chemistry and Technology.
Journal of Fuel Chemistry and Technology.
Journal of Fuel Chemistry and Technology.

Rzhanov Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russia 2Laboratory of Crystal Growth, Nikolaev Institute of Inorganic Chemistry, SB RAS, Novosibirsk 630090, Russia 3Laboratory of Crystal Chemistry, Nikolaev Institute of Inorganic Chemistry, SB RAS, Novosibirsk 630090, Russia 4Laboratory of Crystal Growth, Institute of Geology and Mineralogy, SB RAS, Novosibirsk 630090, Russia 5Laboratory of Optical Materials and Structures, A.V. 
Crystal structure of Na2W2O7.
Kharchenko, Optical properties of some binary alkaline rare earth tungstenates with the structure a-KY(WO4)2, Inorg.
Ramana, Surface crystalography and electronic structure of potassium yttrium tungstate, J.
Solonin, Electronic structure of CuWO4: XPS, XES and NEXAFS, J.

Taken the pore structure effects into account, a mathematical model to describe the interaction of mass transfers, the chemical reaction and the pore structure in the gas sensitive porous medium is presented and solved.
Therefore, in recent years, a series of research work have been done about the gas sensor of porous structure [5-8].
The main objective of this work is to analyze the influence of the pore structure and the pore size distribution on the reaction features and the mass transfers in the gas-sensitive porous medium.
Rumyantseva: Russian Journal of Applied Chemistry.
Nassiopoulou: NATO Science Series II: Mathematics, Physics and Chemistry.

XRD analysis determines the size of the samples and identifies the structure using miller indices (h k l values) of the nanocrystallies matches with JCPDS.
Bulk form of cadmium sulphide (CdS) has hexagonal wurtzite -type structure.
All evident peaks are indexed as the cubic structures of cadmium sulphide are (111), (220) & (311) respectively.
"Materials Chemistry A."
New Journal of Chemistry 38, no. 9 (2014): 4312-4320

Ethylenediamine Catalyzed Decarboxylation of Oxaloacetic Acid: A DFT Investigation Mingzhi Song1, 2, a,, Zailong Zhang1,Chuangang Fan2, Dazhi Li2, Shiguo Zhang2 1 Department of Chemistry, College of Science, China University of Petroleum, Qingdao, Shandong 266580, PR China 2 Institute of Material Chemistry, Department of Chemistry and Chemical Engineering, Binzhou University, Binzhou, Shangdong 256603, PR China aemail: songmingzhi2010@163.com Keywords: Oxalacetic acid, Ethylenediamine-catalyst, DFT Abstract: The decarboxylation mechanism of oxaloacetic acid aided with ethylenediamine or without any catalyst is investigated employing Density Functional Theory (DFT).
In the catalyzed mechanism, the dehydration of carbinolamine (IM1) is via a seven-membered ring transition structure (TS5), which is consistent with the structure proposed by Thalji, et al.
Fig. 2 and 3 include relative Gibbs free energies of these structures in gas phase and water solutions.
Via a six-membered ring transition structure TS, OAA is decarboxylated to intermediate enol (IM) and CO2.
Such seven-membered ring transition structure was also estimated in Thalji’s study [24].

In the process of destruction, local changes in the structure of polymer coatings are observed, which are caused by their structure, flexibility of macrochains and the presence of supramolecular formations [9-12].
Karyakina, Physico-chemical basis of the formation and aging of coatings, Chemistry, Moscow, 1980
Zuev, Strength and destruction of highly elastic materials, Chemistry, Moscow-Leningrad, 1984
Suhareva, Structure and Properties of Polymer Pokrytiy, Chemistry, Moscow, 1982
Sukhareva, The Durability of Coatings, Chemistry, Moscow, 1984

The results compared with the reference [27-28] show that the structure of the product is correct.
Phthalocyanine materials: synthesis, structure, and function.
Applied organometallic chemistry, 5 (1991) 349-377
Applied Organometallic Chemistry, 5 (1991) 203-206
The structure of the phthalocyanines.

PAM could improve the floc morphological structure.
Analysis of floc morphological structure: collecting the floc samples, using image analytical method to conduct the morphological structure analysis.
Effects of PAM on floc structure of dissolved organic system.
Morphological characteristics of Al-humic floc and coagulation chemistry [J].
The fractal structure of floc [J].

Moreover, owing to their unique anisotropy structure, they can be used in building some highly ordered superstructures [13], pillared structure [14] and other functional materials.
Results and Discussion The crystal structure of the products was determined by X-ray diffractometry (XRD).
Gao, et al: The Journal of Physical Chemistry B Vol. 108 (2004), p. 4245-4247
Decher: Chemistry of materials Vol. 13 (2001), p. 4661-4667
Sasaki: The Journal of Physical Chemistry B Vol. 108 (2004), p. 4283-4288

The crystal structures of the CuO fillms were analyzed by X-ray diffractometer system (Bruker Advance D8).
The reflections from the (111) and (200) plane respectively attributed to tenorite CuO structure [5, 14].
Oral, et al., "The preparation of copper(II) oxide thin films and the study of their microstructures and optical properties," Materials Chemistry and Physics, vol. 83, pp. 140-144, 2004
Liu, et al., "Hydrothermal synthesis of CoFe2O4 nanoplatelets and nanoparticles," Materials Chemistry and Physics, vol. 108, pp. 269-273, 2008
Yang, et al., "Controlled synthesis of CuO nanostructures by a simple solution route," Journal of Solid State Chemistry, vol. 180, pp. 1390-1396, 2007