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Online since: April 2014
Authors: Lin Jun Wang, Yue Zhao, Yan Li Ding
Furthermore, the density of Ag nano columnar structure decreased with the increase of depositing angle.
However, there is few paper related to Ag/ZnO core-shell structure for MEF application.
A transmission electron microscopy (TEM, CM200-FEG) equipped with energy dispersive spectrometer (EDS) was used to observe the crystal structure and analysis the elemental distribution of Ag/ZnO core-shell structure, respectively.
The results showed the tilt angle and the diameter of the Ag nano columnar structure increased with the increase of depositing angle, but the density of this structure decreased in same time.
R.; Zhang, Yongxia; Gallagher, Theresa; Baillie, Les; Geddes, Chris D Analytical Chemistry. 80(11),(2008)4125-4132
Online since: July 2012
Authors: De Qing Chu, Li Min Wang, Bao Guang Mao
In the field of Chemistry and Chemical Engineering, artificial neural networks have a wide range of research, the applications in chemistry of neural network more than 90% is BP network.
The heteropoly acid has the strong and sharp diffraction peaks in 1072,978,879,792 cm-1 (Fig.1) with the four characteristic peak of the Keggin structure peaks, and all the diffraction peaks matched well with the peaks of the literature[4].
As shown in Fig. 3, two-tier structure of BP neural network was compiled by MATLAB7.1.
The first layer of neuronal structures of the two-tier model put to use logsig function as the transfer function with four neurons, and the puerlin function as a second layer transfer function with one neuron.
[3] G.G.Xu,P.P.Xu,Math methods of Chemistry and Chemical engineer and Realization of MATLAB.
Online since: November 2012
Authors: Hong Wang, Tao Wang, Yong Zhong Jin, Di Liu, Xue Fei Li
China 2 College of Chemistry & Pharmaceutical Engineering, SiChuan University of Science & Engineering, Zigong 643000, P.R.
China 3College of Chemistry, Jilin University, Changchun 130012, P.
This might suggest that the surface chemistry greatly affected the magnetic properties of fine magnetic particles due to their relatively larger surface area [6].
The structure and morphology of Ni/PMT nanocomposites were characterized by SEM, FTIR, XRD, TGA.
PMT was coated on the surface of Ni nanoparticles, and the presence of Ni affected the chemical structure of synthesized PMT during the polymerization.
Online since: January 2016
Authors: Petr Bezdička, Jan Zatloukal, Jindřich Fornůsek, Martin Gajdoš
Introduction Civil structures of nuclear power plants (NPP) are beyond doubt among the structures meeting the most strict criteria in terms of reliability, serviceability and durability of all.
The specimens were extracted from the structure during installation of new technological devices.
Dwaikat, High-temperature properties of concrete for fire resistance modeling of structures, ACI Mater.J. 105 (2008)
Naus, The Effect of Elevated Temperature on Concrete Materials and Structures— A Literature Review, The effect of elevated temperature on concrete materials and structures-a literature review. (2006)
[10] Eurocode 2, EN, 1992-1-2: design of concrete structures.
Online since: February 2016
Authors: Sana Ali
Chemical structure of B1, B2, G1 and G2 aflatoxins.
The technology is based on the ability of a specific antibody to distinguish the three-dimensional structure of a specific mycotoxin.
Hazards in the Chemical Laboratory, 6th edition, Royal Society of Chemistry, Cambridge, UK, 1994
Agricultural and Food Chemistry 52 (2004) 2746-2755
Káš, Radioimmunoassay of aflatoxin M1, Journal of Radioanalytical and Nuclear Chemistry 117 (1987) 163-169
Online since: July 2011
Authors: Gui Yang Liu, Jun Ming Guo, Ying He, Bao Sen Wang
The phase structure of Fe doped LiFexMn2-xO4 prepared by a molten-salt combustion synthesis Guiyang Liu1, a, Junming Guo2, Baosen Wang1, Ying He1 1College of Science, Honghe University, Mengzi Yunnan, China 661100 2Key Laboratory of Ethnic Medicine Resource Chemistry,State Ethnic Affairs Commission & Ministry of Education,Yunnan University of Nationalities, Kunming Yunnan, China 650031 aliuguiyang@tsinghua.org.cnl Keywords: Lithium ion batteries, cathode, spinel, molten-salt combustion synthesis.
The phase structure and compositions of the products were determined by X-ray diffraction (XRD).
On the other hand, many elements such as Mg, Al, Co, Cr and Fe etc. [12-14] have been used to stabilize the lattice structure further to improve the cycle stability of LiMn2O4.
The purpose of this paper is to investigate the effects of Fe doping content and cacination temperatures on the phase structures of the products.
Acknowledgements The present work was supported by the National Natural Science Foundation of China (No.51062018) and by the Key Subject of Materials Physics and Chemistry of Honghe University.
Online since: October 2008
Authors: Lucky Mashudu Sikhwivhilu, Suprakas Sinha Ray, Neil John Coville
The synthesis of materials with specific size, microstructure and properties is particularly important in preparative chemistry and material sciences [8-10].
Tubular structures with a diameter of 8-11 nm were obtained.
The nanotubes are made up from potassium titanate structure, KTiO2(OH) [25,26].
Nogueira, Journal of Photochemistry and Photobiology A: Chemistry 189 (2007) 153. 20.
Jin, Journal of Molecular Structure 749 (2005) 103. 29.
Online since: June 2014
Authors: Xin Zhen Lu, Yan Yan Chang, Bo Peng, Ming Tao Xu
Network structure composed of sheet ZnO was observed.
The network structure was shown by HRTEM shown in fig.2 (c) clearly.
Network structure composed of sheet ZnO was formed after electrospinning and calcination.
[2] Sining Yun, Sangwoo Lim, Improved conversion efficiency in dye-sensitized solar cells based on electrospun Al-doped ZnO nanofiber electrodes prepared by seed layer treatment, Journal of Solid State Chemistry. 184 (2011) 273–279
[4] Xinghua Yang, Changlu Shao, Hongyu Guan, Xiliang Li, Jian Gong, Preparation and characterization of ZnO nanofibers by using electrospun PVA/zinc acetate composite fiber as precursor, Inorganic Chemistry Communications. 7 (2004) 176-178
Online since: February 2013
Authors: João Paulo Barros Machado, A.L.A. Escada, Roberto Zenhei Nakazato, Ana Paula Rosifini Alves Claro
Surface morphology and coating chemistry were obtained respectively using, field-emission scanning electron microscopy (FEG-SEM), AFM and X-ray diffraction (XRD).
Titania nanotube arrays are desirable for these applications due to their large surface areas and tubular structure, influenced by pore structure and pore size [12].
The objective of this paper is to produce a calcium phosphate coating evenly distributed on the Ti-7.5Mo that grows from a nanotubular oxide structure.
Surface morphology and coating chemistry were obtained respectively using a field-emission scanning electron microscopy (FE-SEM), and X-ray diffraction (XRD).
Online since: April 2016
Authors: Guang Ai Zhu, Dan Zhao, Ting Xu, Liao Yu Wei, Ming Yu Gu, Yan Mao Dong
Effects of calcining temperature and alkaline of solution on the structure and performance of HTLcs were studied.
Its structure has not yet been destroyed.
It has a columnar structure under optical microscop (Fig.6b).
Arabian Journal of Chemistry , 2015:1-15
ACS Sustainable Chemistry & Engineering , 2015 , 3 , 340-348.