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It is good for analyzing surface characteristics of pore structure further.
The characteristics of macro gather some structure and micro porous structure and the mechanical behavior and durability are connected closely.
Concrete materials fractal theory can be used to be a new branch of materials scientific researching, as following the materials science, micromechanics, fracture mechanics, cement chemistry, rheological etc.
F.H.Wittman put forward the concept of pore learn at the seventh international cement chemistry conference in 1980.
The research on fractal geometry will help people understand the self-similarity of the skeleton structure and pore composed by skeleton structure in a material.

Another, the surface structures of LiMn2O4 grains are of great importance to the electrochemical performance of batteries [11].
Doping is to enhance the structure stability, and the coating is to suppress the Mn2+ ions dissolution.
They mean that co-doped and SiO2-coated spinels did not change the crystal structure and charge–discharge behavior of LiMn2O4, as expected by XRD results in Fig. 1 and 2.
S.X.Zhao, X.M.Min ect [20] explain the reanson Co and S codoping could increase the structural stability of spinel LiMn2O4 by (SCC-DV-Xα) methode of quantum chemistry.
Synthesis and electrochemical characterizations of nano-SiO2-coated LiMn2O4 cathode materials for rechargeable lithium batteries, Journal of Electroanalytical Chemistry. 624 (2008) 197-204

Mangeron 53, 70050 Iasi, Romania 2Romanian Academy, “Petru Poni” Institute of Macromolecular Chemistry, 41 A Gr.
The right amount of material used as filler is evaluated using mechanical tests and dielectric spectroscopy in order to obtain an optimal structure biodegradable, making it suitable as a viable technical solution to partially replace electrical enclosures or different insulators.
This can be a problem because it forms a biphasic structure, interactions between the two phases, at the interface, determining the properties of new material.
Poor adhesion between phases leads, on the one hand, to a poor mechanical behaviour and on the other hand makes it impossible to achieve a structured with homogeneous morphologies [6].
Popa, Contributions to the Modification of Lignocellulosics by Epoxydation and Estherification, Cellulose Chemistry and Technology, 2005, 39(3-4), pp.201-210

This scientific field investigates the relationship between the structure of materials at atomic or molecular scales and their macroscopic properties.
It incorporates elements of applied physics and chemistry.
A major breakthrough in the understanding of materials occurred in the late 19th century, when the American scientist Josiah Willard Gibbs demonstrated that the thermodynamic properties related to atomic structure in various phases are related to the physical properties of a material.

Two-Dimensional Neutral Framework Generated from Mixed Organic Ligands: Structure and Magnetic Properties * Ruixin Chen*, Lingyan Xu2, Changfeng Sun2 1 .College of maths and physics, Qingdao University of Science and Technology, Qingdao 266042, P.
College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P.
China Keywords: Hydrothermal synthesis; Crystal structure; Magnetic properties.
Structure determination A suitable blueness single crystal with dimensions 0.32 x 0.22 x 0.21 mm was glued to a thin glass fiber and mounted on a Siemens Smart CCD diffractometer using graphite-monochromatic MoKa radiation (λ = 0.71073 Å).
The structure was solved in the space group Fdd2 by direct methods and refined on F2 by full-matrix least-squares using SHELXTL97 [12].

Preda a Institute of Physical Chemistry "Ilie Murgulescu", Romanian Academy, 202 Splaiul Independentei, 060021, Bucharest, Romania a predas@icf.ro Keywords: TiO2 nanopowders, SiO2 nanopowders, SiO2-TiO2 thin films.
Thermal analysis, morphology and structure were characterized for powders and correlation between preparation method and optical properties of binary materials (SiO2-TiO2) for thin films was approached.
The most promising advantage of this method consists in the fact that materials with predetermined structure were obtained by varying the experimental conditions.
SiO2 powder remained into an amorphous structure.
Scherer: Sol-gel science, the physics and chemistry of sol-gel processing (Academic Press, San Diego, CA, 1989) [2] H.

2-chloromethyl-5-aryl-1,3,4-oxadiazole synthesis and properties of compounds Xionglu zhang Qiuyan Qin Yiping Qian Hong xiao Key laboratory of organo-phamaceutic chemistry of jiangxi province Gannan Normal University 341000, Ganzhou.
And their structures were confirmed by 1HNMR,FT-IR MS, UV-vis absorption results showed that the maximum absorption wavelength appeared at 304 nm，and fluorescence spectroscopy results showed that they emit strong purple fluorescence in DMF solution.
Introduction Exploration heterocyclic compound's synthesis and the biological activity are in the organic chemistry nearly receive one of attention research subjects. 1,3,4-oxadiazole compound are kind of extremely important five heterocyclic compounds, 1,3,4- oxadiazole compound have the important biological activity, widespread application and medicine [1], domains and so on agricultural [2~3].
For the discussion molecular structure and optical property's relations, seek the performance outstanding electroluminescence material.
The design synthesized 2- chlorine methyl - 5- aryl - 1,3,4- oxadiazole compound, with 1H NMR, FT-IR, MS has carried on the confirmation to its structure, and has studied their ultraviolet - visible absorption spectrum, the fluorescence spectrum.

A new process and structure of Al2O3/LaPO4 composites Qiuju Zheng 1, a , Xin Wang 2, b* , Xingru Liu2, c , Yansheng Yin2, d 1 College of Chemistry and Chemical Engineering,Ocean University of China,Shandong, Qingdao 2 Institutes of Materials Science and Engineering,Ocean University of China,Shandong, Qingdao a qiuju83 @yahoo.com.cn, b wangxinhd@edu.com.cn, c liuxingru1012@126.com, d yys2003@ouc.edu.cn Keywords: Al2O3/LaPO4 composites; weak bonding; morphology Abstract: LaPO4 was added to Al2O3 ceramic matrix to improve the machinability of the composites.
From the TEM image, it can be seen that the coated powders have a clear core-shell structure and the thickness of the coating varies from 5 to 15 nm approximately.
The coated powders have a clear core-shell structure and the thickness of the coating varies from 5 to 15 nm approximately.
After sintering, the LaPO4 coating became less recognized, and a group of layered structure and fiber shaped LaPO4 was formed.
From the TEM images of the LaPO4-coated α-Al2O3 powders, it can be seen that the coated powders have a clear core-shell structure and the thickness of the coating varies from 5 to 15 nm approximately.

The chemistry of carbon nanotubes is concentrated on purification, solubilization, dispersion, and functionalization [26].
Structure and Morphology of CNTs The bonding structure and characteristics of carbon atoms are first described to comprehend the structure and characteristics of nanotubes.
The structure of CNTs is very similar to that of asbestos [104, 105].
Robertson, Diamond-like carbon, Pure and Applied Chemistry. 66(1994) 1789–1796
Giordani, Carbon nano-onions (multilayer fullerenes): chemistry and applications, Beilstein Journal of Nanotechnology. 5(2014) 1980–1998

Cardanol, with special structure and natural attribute, is attracting globe’s attention to synthesize the green surfactant and biomass surfactant[2].
The structure of product is given in Fig.2 and 1H NMR spectral data are listed in Table 1.
With increasing the amount of NaCl, the extra electric charge can destroy the electric double-layer structure, make the interfacial membrane thick and foam unstable.
The adsorption effect of the oil-water surface in the emulsion O/W is determined by the degree of hydrophobic groups damage the structure in the water phase, and increasing the length of the alkane chain.
[8] Zhu Buyao, Zhao Guoxi, Measuring surface tension of liquids-drop weight/drop volume method, Chemistry. 6 (1981) 21-26 (in Chinese).