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Magnetic Properties of Mn/Co/Sn Substituted Barium Hexaferrites Synthesized by an Improved Co-precipitation Method Yue Liu1, a, Hong-bo Zhang2, Ji-dong Duan2, Ying Liu1, b, *, Yu Gao1, Li-li Wang1, Yang Li1 1 College of Chemistry and Life Science, Shenyang Normal University, Shenyang 110034, PR China 2 Experimental Center, Shenyang Normal University, Shenyang 110034, China ayueliusd@163.com, byingliusd@163.com, Keywords: Barium hexaferrite; co-precipitation; molten salt Abstract.
Mater. doi:10.1016/j.jmmm.2010.11.075 ] Structure of barium hexaferrite Barium ferrite belongs to space group P63/mmc with a complex hexagonal magnetoplumbite structure (Fig. 1).
Fig. 1 The packing of O2-, the layout of different layers, and the packing structure in the unit cell of barium hexaferrite.

The effect of temperature, pH, time and mole ratio on cationic degree of product was investigated by the single factor and orthogonal design experiments to gain the optimal conditions for synthesis, and the structure of product was characterized by FIRS.
Fig.1 The effect of the concentration of cation on anti-swelling ratio 3.4 Structural ananlysis of GADAC To examine the structure and verify the purity of GADAC, Infrared Spectroscopy was used.
(3) The structure of GADAC was analyzed by the Infrared spectroscopy, the corresponding spectrogram shows that GADAC has all the characteristic absorption peak without other miscellaneous peak, which also demonstrates that the GADAC synthesized has a very high purity.
Patent 2,923,701 (1960) [3] Y.P.Yu, Development and uses of diallylamine polymers for petroleum production, Oilfield chemistry 8 (1991) 194~199.

Introduction ReS2 is crystallized in a triclinic distorted CdCl2 structure with strong covalent bonds within a layer consisting of S-Re-S sheets and weak van der Waals interactions between layers.
Hence the conduction-band structure was assigned as chalcogen p-like.
The local structure distortions result in defect states and acted as radiative recombination centers.
Hoffmann: Journal of Solid State Chemistry Vol. 146 (1999), p. 516-527

Yakimovad Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden.
In recent years, low dimensional semiconductor structures have attracted much attention due to their novel physical properties and diversity for potential electronic and photonic applications.
Employing low dimensional structures yields new device functionality and becomes a driving force for inventive material and device concepts.
The step-like morphology with very fine structure of the nanolayer grown at 1600 oC is illustrated by AFM image in Fig. 2 e.

Treatment Measures on Scale Formation of ASP Flooding Lanlan Yu, Baohui Wang, Xurui Sun School of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, China, Email:b03030121@126.com Keywords: ASP flooding; Scale Formation; Treatment measures Abstract.
Rigid scale for adhesion is calcite structure, and loose precipitation for adhesion is weak aragonite structure which is not easy adherent on the pipe wall, and easily washed away by the water when velocity is rapid.
In addition, treatment of water will generate active oxygen, for the system already scaling, the active oxygen will destroy the electronic adhesion between the molecules and change its crystal structure, and make hard scale into loose soft scale.

Effect of Carbon addition on the Microstructure and Mechanical Properties of the in situ Formed TiAl/Ti2AlC Composites Jianfeng Zhu a, Wenwen Yang, and Yiping Gong Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an 710021, China a zhujf@sust.edu.cn Keywords: TiAl, Ti2AlC, In situ reaction, Microstructure, Mechanical properties.
While the sample with 5 % in situ formed Ti2AlC possesses a duplex structure with fine grain size.
With C content further increasing to 0.80 % (9% Ti2AlC), the Ti2AlC particles change from a dispersion state into an agglomerating structure.
The fabricated composites consisted of duplex structure matrix of γ-TiAl and α2-Ti3Al.

First-principles study of electron transport behavior through porphyrin molecular wires Yan Wei Li1,2,a, Jin Huan Yao1,2,b, Xing Sheng Deng1,c and Xiao Xi Huang1,d 1College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China 2Key laboratory of new processing technology for nonferrous metals and materials, ministry of education, Guilin University of Technology, Guilin 541004, China alywhit@glite.edu.cn; byaojinhuan@126.com Keywords: Porphyrin; Molecular electronics; Electron transport; First-principles calculation.
Most of the molecular electronic devices consist of conjugated structure, which contains alternating single and double (or triple) bonds and facilitates the electron transport.
Protoporphyrin and its derivatives are the most promising materials for future applications in nano-electronics because of the rigid geometric configuration, highly conjugated structure, and good chemical stability [8].
(a): The optimized structure of porphyrin oligomers attached to two gold clusters.

Study on the curing reaction and rheological behavior of Bismaleimide resin Qiuju Sun1, a, Kunyuan Wang1,b, Shiwei Wu2 , c, Li Dai1, d 1 College of chemistry and life science, Shenyang Normal University, Shenyang 110034, China 2 Experimental Centers, Shenyang Normal Univercity, Shenyang 110034, China a sqj006@sina.com , b15040228379@163.com, c wsw1975@163.com, d2090li@sohu.com Keywords: Bismaleimide resin, Curing reaction, Rheological behavior, Reaction kinetics Abstract.
However, because of their highly cross-linked structures bismaleimide resins are extremely brittle and many methods have been employed to overcome the inherent brittleness, decrease the cure temperature, increase the internal toughness and improve the frailty of BMI resins [1-4].
(a) 4,4_-bismaleimidodiphenyl methane (b) O,O'-diallyl bisphenol A (c) polyether-ether-sulfone Fig. 1 The chemical structures of BMI components Experimental Characterization.
It is generally known that Maleimides react with allylphenol groups through a Diels-Alder reaction (via intermediate Wagner-Juaregg reaction step) to give an increase in cyclic network structure [6].

Effective experimental data obtained after analysis processing, the experimental results: the cavitation structure parameter changes will greatly affect the cavitation performance greatly affect the degradation of chloroform and algae removal, in the present study.
Conclusions (1) Optimizing the structure of the cavitation generator is an important prerequisite to improve the effect of cavitation in certain hydrodynamic conditions, a reasonable structure can enhance the effect of cavitation
Chemistry driven by suction.

System Structure The system structure is depicted in Fig.1, the battery management system includes battery pack, charge controller, gas gauge, DC/DC power module, FPGA, DSP and AC adaptor.
Fig.1 The System Structure The FPGA, as the core control module, monitors the battery level, and controls the battery charger according to the battery information, while transfers the battery information to DSP, and DSP transfers the information to the host computer via the Ethernet interface, then battery information and parameters display on the host GUI.
Fig.2 The Circuit Schematic Diagram of MAX1535A MAX1535A is a highly integrated, multi-chemistry media battery charger control chip, which includes all the features of the smart battery charger, and integrate high-efficiency, synchronous rectification step-down DC/DC converter to achieve precision constant voltage, constant current charging.