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Effect of hydrothermal temperatures on the structure of Bi0.5Na0.5TiO3 nanomaterials Xiaoli Zhang1, Weiping Tang2, Haiyan Wu1, Bingbing Zhang1 and Xiucheng Zheng1, a 1Department of Chemistry, Zhengzhou University, Zhengzhou 450001, China 2Department of Chemical Engineering, Henan Polytechnic Institute, Nanyang, 473009, China azhxch@zzu.edu.cn Keywords: Hydrothermal synthesis; Bi0.5Na0.5TiO3; Hydrothermal temperatures; Structure characterization.
However, to the best of our knowledge, few literatures have reported the effects of hydrothermal temperatures on the structure and dielectric properties of BNT in details.
The effect of the different hydrothermal temperatures on the structure of the as-prepared BNT was discussed in details.
Table 1 shows the structure parameters of the as-prepared BNT nanoparticles.
Li, Slurry Synthesis of Bismuth Sodium Titanate with a Transient Aurivillius-Type Structure, J.

Very low pressure plasma spraying has been attracted attention due to special properties of the expanded plasma jet which may probably deposit specific and unique structure coatings, such as columnar structure coatings.
It can prepare different special structure coatings compared to lamellar structure deposited by atmospheric plasma spraying, such as the equiaxed microstructure mainly for the metal coatings [3] and columnar structure coatings [4] for yttria-partially stabilized zirconia (YSZ).
Pfender, Probe Measurements in Thermal Plasma Jets, Plasma Chemistry and Plasma Processing, 8 (1988) 75-90.

The structure of PTMAEPAC was confirmed by IR and 1H-NMR, and its anti-clay-expanding ability was studied.
According to the IR and NMR analysis the product has the same structure with the aim compound.
The structure of PTMAEPAC was analyzed by Tensor27 FT-IR spectra (Broker, Germanny) and 1H nuclear magnetic resonance (NMR) (Jeol Jnm-GSX400, 400 MHz) spectral data.
The structure of PTMAEPAC was analyzed by Tensor27 FT-IR spectra and 1H NMR.
IR and 1H NMR analysis results indicate the product has the same structure with the aim compound.

The phase structure of the composites was investigated by transmission electron microscopy (TEM) and electron diffraction analysis.
Study of the structure and phase composition of the obtained systems showed that the composites have heterogeneous structure and the structure is varied for various compositions.
As an example, three different structures of the composite are shown on Fig. 1.
The chosen annealing temperature does not change the structure of the composite.
//Physics and chemistry of materials processing 5, (2001) 14-20

The structure, morphology and the particulars of the components were explained by XRD, SEM and BET, which proved that MnO2/MMT composites were successfully synthesized.
The crystal structure of montmorillonite consists of a layer formed by the fusion of two tetrahedral coordinated silicon atoms with a common octahedral sheet of magnesium hydroxide or aluminum hydroxide[6].
According to the XRD pattern of MMT/MnO2 in Figure 1 (b) , the peak about diffraction comes about at 12.80°, 26.54° and 37.49° correspond to the (001) (002) and (111) planes of the sodium manganese crystal structure, respectively (JCPDS No.80-1098)[15].
From the data, MnO2/MMT composites have enlarged the pore structure to a certain extent compared with MMT.
New Journal of Chemistry 44.16: 6096-6120

The simulating cell was composed of 54 atoms with Cu fcc structure in a cubic box.
RDF curve would take on peaks at the different nearest neighbor position in ideal lattice structures.
The disappearance of peaks suggests a significant structure change, namely from solid phase to liquid phase.
Fig.3 Partial density of states of Cu atom As can be seen from Figure 3, the band structure of Cu was composed of s, p and d orbital.
[2] Hideturni Hirai: Chemistry Letters,vol. 139( 1983) p.743

Tempering cycle has been suggested to obtain fully tempered martensitic structure.
Since sub-zero treatment is necessary to get a fully martensitic structure after hardening treatment, which is sometime difficult in industrial practice.
The specified alloy chemistry and the mechanical properties of the fasteners required in service are given in Table 1 and 2 respectively.
Tempering was carried out at four different temperatures to evaluate the response of the mixed structure containing martensite and retained austenite to the various tempering cycles.
Cycle-4 Fig. 2(a) reveals typical structure of tempered martensite consisting of alloy carbide in feritic matrix.

The periodic structure of nanoparticles in OM voids significantly changes the properties of the metamaterials, that by their properties are significantly different from similar monolithic substances.
Sampling Investigated nanocomposite samples were formed on the base of ОМ structure under filling of the inter-ball (inter-sphere) voids through the synthesis of inter-ball voids by vanadates and metal phosphates.
Nanocomposites based on structure of OM: LiNiPO4, ОМ: LiCoPO4, ОМ: DyVO4 and ОМ: GdVO4 fall into dielectric conductors with a low level of electrical conductivity in the low-frequency region.
O’Dwyer, Artificial opal photonic crystals and inverse opal structures – fundamentals and applications from optics to energy storage, Journal of materials chemistry C 3(24) (2015) 6109-6143, DOI: 10.1039/c5tc01083g
Kuznetsov, Three-dimensional nanocomposite metal dielectric materials on the basis of opal matrices, Russian journal of general chemistry 83(11) (2013) 2148-2158, DOI: 10.1134/S1070363213110340

Study on the Polyurethane Concrete for the Rapid Repairment of Highway Pavement Hui Wang1,a, Haixia Liu1, b, Caihong Zhuang1, c 1School of Chemistry and Chemical Engineering, Key Laboratory of Resources Chemistry of Nonferrous Metals, Ministry of Education, Central South University, Changsha, 410083 Hunan, People’s Republic of China aemail:huiwang1968@163.com(Hui Wang), bliuhaixia19@163.com, cch1xj@163.com Keywords：Polyurethane concrete; Rigid polyurethane foam; Mechanical property; Rapid pavement repair; Highway Abstract：Polyurethane concrete which applies to the rapid repair highway pavement was systematically researched.
The reparative pavement structure should have sufficient bearing strength and good flatness to ensure the vehicles’ safety on the highway [3].
As it can be seen in Fig. 5-(a), aggregate tightly set in polyurethane and become a strong core, and a close-grained entity structure is formed.
It won’t appear the disorderly structure similar to normal concrete.
And a close-grained organic-inorganics complex three-dimensional space network structure are formed.

., Tomsk, 634050, Russia 2Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences, 4, pr. 
Peaks at 2Θ of 7.8 and 8.7 indicate amorphous alumina structure which does not transform into the form of zeolite.
The peaks in the range from 10 to 45 2Θ show that test sample has typical structure of zeolite ZSM-5.
In the region from 10 to 45 2Θ the given sample is characterized by typical structure of zeolite ZSM-5.
Abu–Dahrieh, Scaling down direct dimethyl ether synthesis for biogas conversion, School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast, 2010