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The composite films are islands-structure composed of nanometer particles.
Fluorocarbon films exhibited good chemistry stability and high hydrophobicity.
XPS experiments were carried out using a VG ESCAlAB MKII spectrometer for structure analysis.
They are islands-like structure.
It was because that surface structure varies with different energy.

We use IR to evaluate the possible functional groups and XRD, UV and SEM to characterize the structure and surface morphology of MWCNTs.
The results suggest that the TiO2, which composed of nano-scale particles, was well coated on MWCNTs via chemistry bond.
Some references show that the structure of CNTs might significantly affect the catalyst [10-13].

In this case, the coke quality of preparation and the desired effect on the contrary, the strength of coke and block level has not improved and increased, the hollow structure occurs in the coke, and non-homogeneous texture ring Structure appears.
The stripe structure of ring hollow reflected a certain law, and showed good reproducibility.
Coke internally hollow structure, which greatly reduces the mechanical strength of formed coke; the ring texture structure is increased porosity of coke, and because of its heterogeneous characteristics, more crack of coke produced.
The volume of macroporous structure of central region will be slightly reduced.
Coal Chemistry[M].Beijing:Metallurgical Industry Press,1983:158-188.

Introduction Polymer networks are unique molecular structures having characteristic dimensions on both, micro- and macro- world scale [1].
If we can extract them from equations relating the structure and properties of a polymer system (or some class of systems), then we will be able to understand the essence of the structure for that class of systems.
But in reality, we usually find some cut-offs beyond which we cannot see any structure characteristics and disorder as well.
Flory: Principles of Polymer Chemistry (Cornell Univ., New York 1953)
Avnir, Ed.: The Fractal Approach to Heterogeneous Chemistry (Wiley, New York 1989)

Organic light emitting diodes with metallocene compounds as cathode interfacial layers Keunhee Park1, a, Donghyun Yeo1, b, Seungsik Oh1, c, Hoonbae Kim1, d, Myung Hoon Ha1, e, Hyojin Oh1, f, Minwoo Park1, g, Jisoo Park1, h, Daewon Park1, i, Donggeun Jung1, j, Heeyeop Chae2, k, Hyoungsub Kim3, l, and Jin-Hyo Boo4, m 1Department of Physics, Institute of Basic Science, Brain Korea 21 Physics Research Division, Sungkyunkwan University, Suwon 440-746, Republic of Korea 2Department of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea 3School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea 4Departmet of Chemistry and Institute of Basic Science, Sungkyunkwan University, Suwon 440-746, Republic of Korea a5959760@naver.com, bqkqhaos9@skku.edu, coss5duck@gmail.com, dhchae@skku.edu, eddasinbab@naver.com, fhj5869@hanmail.net, gnicwait@nate.com, hpjs84517@hanmail.net, idaewon0529@skku.edu, jdjung@skku.ac.kr
Fig.1 shows the OLED device structure and chemical structures of metallocene compounds.
(a) a schematic OLED structure, (b) the chemical structure of bis(cyclopentadienyl) titanium dichloride, (c) the chemical structure of bis(cyclopentadienyl) zirconium dichloride, and (d) the chemical structure of bis(ethylcyclopentadienyl) hafnium dichloride The current density-voltage (J-V) characteristics were measured using a Keithley 2400 electrometer and the brightness was evaluated by measuring the photocurrent induced by the light emission from the OLEDs using a Keithley 485 picoammeter.

The triclinic-type FeVO4 has the special chain structure.
Crystal structure and Mössbauer Effect Investigation of FeVO4 [J].
Journal of Solid State Chemistry, 4(1) (1972)29-37
Journal of Solid State Chemistry, 123(1) (1996) 54-59
Journal of Photochemistry and Photobiology A: Chemistry, 167(1) (2004) 59-67.

The structure of GCC was measured by X-ray diffraction.
The changes of size distribution, rheological behavior, surface properties, specific surface area and crystal structure of GCC under different feed rate, rotation speed, solid mass concentration, media diameter and surfactant concentration after grinding by various wet grinding equipment were already studied [3-7] and the impacts of milling time, bead size and rotation speed on GCC crystal size and structure using different dry grinding mills were investigated [8-9].
After ultrafine grinding, intensity of characteristic peaks for each plane of GCC is reduced, and the widths of main diffraction peaks have an obvious broad trend indicating that the structure of some GCC particles was distorted and grain size was reduced which resulted in reduction of diffraction intensity.
Journal of Industrial and Engineering Chemistry.15(2009)243-246
Effects of dry grinding on the structure and granularity of calcite and its polymorphic transformation into aragonite,J.

In the present study, three-dimensional holographic vector of atomic interaction field (3D-HoVAIF) is used to describe the chemical structures of PCDD/Fs.
Accordingly, quantitative structure-property relationship (QSPR) model seems reasonable, which is showed in many previous studies [4-7].
In this study, we report a quantitative structure-property relationship of PCDD/Fs established by 3D-HoVAIF descriptors.
Calculation for 3D-HoVAIF descriptors of PCDD/Fs Original spatial structures of the 212 PCDD/Fs molecules are autogenerated by software Chemoffice 2004, and then optimized preliminarily using semi-empirical quantum chemistry soft MOPAC in Chem 3D at AM1 level (energy cut-off:0.001 kJ·mol-1).
It has been shown the model have good prediction capability and favorable stability, and 3D-HoVAIF descriptors can be well used to characterize the molecular structure information and express the quantitative structure-property relationships of PCDD/Fs.

Influence of Nd2O3 on structure and dielectric property of zirconia barium titanate Sen Wang，Zhihui Li，Xin Liu，Huan Zhang University of Science and Technology Liaoning, Institute of Ceramic, Liaoning Anshan ,114051, China wsenl@yeah.net Keywords: Capacitor；Zirconia barium titanate；Dopant Abstract：Influence of Nd2O3 on structure and dielectric property of zirconia barium titanate has been investigated by means of XRD, SEM, EDXS.
Shaikh et al has studied doped effect of Nd2O3 in pure barium titanate based ceramic and gave some explantation on the experiment result from the point of defect chemistry[5].
Conclusions can be drown as follow: (1) The crystal structure of BTZ ceramic changed when the Nd2O3 content increased and new phase can be found when Nd2O3 content reached 4%
(3) Nd2O3 distributed mainly at the grain boundary ,which is helpful to form core-shell structure
Pure barium titanate ceramics: crystalline structure and dielectric properties as a function of grain size , ElectroceramicsIV Conf., 1994, 1:105~109

Currently, the treatment of coking wastewater can be divided into physical, chemical, physical chemistry, biochemistry, electrochemical method and a combination of all the above techniques integrated approach. 2.1 Physical methods The physical separation methods is separating the organic pollutants or other types of contaminants from the wastewater, while not consuming too much energy to destroy their chemical structure, that is, separate and remove the dissolve suspension objects in water by the physical action (including oil film) . 2.1.1 Adsorption Adsorption method is to use a porous adsorbent purifing harmful substances in coking wastewater.
Duan Aimin, Zhang Lei, et al. [43] amplied the electrochemical oxidation coupled flocculation of coking wastewater treatment technology, the study found that electrochemical oxidation and flocculation had good synergistic effect, under appropriate conditions, water quality indicators can reach level of emission standards. 2.2.2 Supercritical water oxidation (SCWO) Supercritical water oxidation technology is a new oxidation technology which can completely destroy organic structure.
Zhang Wanhui, Wei Chaohai: Environmrntal Chemistry, Vol 31, No.5(2012), p.702 (In Chinese)
[15].Lu Jianhang, Wang Hongbin: Environmrntal Chemistry, (2007), p.65 (In Chinese)
[29].Liu Xianqing, Wu Haizhen et al: Environmental Chemistry, (2012), (In Chinese)