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Online since: June 2014
Authors: Gui Qiu Su, Jian Yang, Hong Bo Lu
Coke combustion between 400 ˚C ~ 600 ˚C, xylan reached the maximum weight loss in lowest temperature, This was due to the molecular structure of xylanase, Polymer chains with side chain and containing methoxyl group, which was easy to take off at low temperature.
The pyrolysis of lignin has similar reaction behavior with the xylan, but its molecular structure was more complex.
Journal of Fuel Chemistry and Technology, 2006,34 (01):61-65 [2] WANG Shu-rong, et al.
Journal of Fuel Chemistry and Technology, 2003, 31(4):317-321 [3]WANG Shu-rong, et al.
Journal of Fuel Chemistry and Technology, 2004,32(6):694-698 [4]A.W.
The pyrolysis of lignin has similar reaction behavior with the xylan, but its molecular structure was more complex.
Journal of Fuel Chemistry and Technology, 2006,34 (01):61-65 [2] WANG Shu-rong, et al.
Journal of Fuel Chemistry and Technology, 2003, 31(4):317-321 [3]WANG Shu-rong, et al.
Journal of Fuel Chemistry and Technology, 2004,32(6):694-698 [4]A.W.
Online since: September 2013
Authors: Li Qiu Wang, Xin Xin Deng, Liang Tian
The basic structure of the photosynthetic bacteria solar cell was shown in Fig.1.
Fig.1 Schematic structure of the photosynthetic bacteria solar cell: 1-Cathode 2-Proton Exchange Membrane 3-Anode 4-Reference Electrode 5-Anolyte 6-Photosynthetic Bacteria 7-Electrochemical Workstation 8-Intake tube 9-Catholyte Photo current of the photosynthetic bacteria solar cell.
B2011203231) and Sea Grant of Key Laboratory of Applied Chemistry (Yanshan University) for providing the financial support for this project, and Rhodopseudomonas, a gift from Dr.
Corresponding Author Name: Liqiu Wang; E-mail: liqiuwang@tom.com Mobile: +86-13111416756; Fax: +86-355-8061569 Organization: College of Environmental and Chemical Engineering, Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao Hebei Province, 066004, China References [1] H.
Lu: Chemistry and Bioengineering Vol. 26 (2009), p. 67
Fig.1 Schematic structure of the photosynthetic bacteria solar cell: 1-Cathode 2-Proton Exchange Membrane 3-Anode 4-Reference Electrode 5-Anolyte 6-Photosynthetic Bacteria 7-Electrochemical Workstation 8-Intake tube 9-Catholyte Photo current of the photosynthetic bacteria solar cell.
B2011203231) and Sea Grant of Key Laboratory of Applied Chemistry (Yanshan University) for providing the financial support for this project, and Rhodopseudomonas, a gift from Dr.
Corresponding Author Name: Liqiu Wang; E-mail: liqiuwang@tom.com Mobile: +86-13111416756; Fax: +86-355-8061569 Organization: College of Environmental and Chemical Engineering, Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao Hebei Province, 066004, China References [1] H.
Lu: Chemistry and Bioengineering Vol. 26 (2009), p. 67
Online since: June 2004
Authors: E.P. Simonenko, N.T. Kuznetsov, V.G. Sevastyanov, Yu S. Ezhov
Kuznetsov 1
1
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences,
Leninskii Pr., 31, Moscow, 119991, Russia,
2
Institute for High Energy Densities, "IVTAN" Association, Russian Academy of Sciences,
Izhorskaya st., 13/19, Moscow, 125412, Russia
Keywords: Silicon carbide, SiC composites, thermodynamic analysis.
Thermodynamic functions were evaluated on the basis of molecular constants of SiC, SiC2, Si3C, Si2C, Si2C2, selected during comprehensive analysis of the modern data on the structure of these molecules.
Advances in this area are impossible without combining various techniques and approaches, including high-temperature chemistry, sol-gel processing and chemical thermodynamics.
In spite of the fact that the process of carbothermal reduction of silicon dioxide is one of the main and "old" processes in silicon chemistry and metallurgy, and the results of the synthesis of silicon carbide strongly depend on the synthetic conditions, thermodynamics of this process has not been studied thoroughly yet.
Thermodynamic functions were evaluated (table 1) on the basis of molecular constants of SiC, SiC2, Si3C, Si2C, Si2C2 (tables 2, 3), selected during comprehensive analysis of the modern data on the structure of these molecules and data, obtained using quantum - chemical calculations.
Thermodynamic functions were evaluated on the basis of molecular constants of SiC, SiC2, Si3C, Si2C, Si2C2, selected during comprehensive analysis of the modern data on the structure of these molecules.
Advances in this area are impossible without combining various techniques and approaches, including high-temperature chemistry, sol-gel processing and chemical thermodynamics.
In spite of the fact that the process of carbothermal reduction of silicon dioxide is one of the main and "old" processes in silicon chemistry and metallurgy, and the results of the synthesis of silicon carbide strongly depend on the synthetic conditions, thermodynamics of this process has not been studied thoroughly yet.
Thermodynamic functions were evaluated (table 1) on the basis of molecular constants of SiC, SiC2, Si3C, Si2C, Si2C2 (tables 2, 3), selected during comprehensive analysis of the modern data on the structure of these molecules and data, obtained using quantum - chemical calculations.
Online since: October 2011
Authors: Chuan Jiang, Yan Ling Bao, Guang Ze Dai
Many references [5-8] show that material surface characteristics, such as hydrophilicity, chemistry, charge, roughness and rigidity, would greatly affect the adhesion capacity of different types of bacterial or cell on material surface.
X-ray photoelectron spectroscopy is a unique and valid technique for obtaining detailed atomic elemental and molecular structures information from CF surface [16].
Inagaki, in: New Carbons - Control of Structure and Functions, Published by Elsevier Science, Oxford (2000), p. 82-123
Zhao: Biophysical Chemistry Vol. 117 (2005), p. 39
Irani: Radiation Physics and Chemistry Vol. 77 (2008), p. 280
X-ray photoelectron spectroscopy is a unique and valid technique for obtaining detailed atomic elemental and molecular structures information from CF surface [16].
Inagaki, in: New Carbons - Control of Structure and Functions, Published by Elsevier Science, Oxford (2000), p. 82-123
Zhao: Biophysical Chemistry Vol. 117 (2005), p. 39
Irani: Radiation Physics and Chemistry Vol. 77 (2008), p. 280
Online since: April 2012
Authors: Mohammad Hafizuddin Haji Jumali, Muhammad Yahaya, Siti Mariam Mohamad, Rozidawati Awang, Mohd Riduan M. Said, Muhammad Mat Salleh
NBT have perovskite structure with relatively large remnant polarization, Pr=38 µC/cm2, and high Curie temperature, Tc= 320oC [2].
Since few years ago, the wet chemistry method attracts attention of researchers as alternative method to synthesis piezoelectric.
Phase identification analysis confirmed that the crystalline phase is Na0.5Bi0.5TiO3 with rhombohedral crystal structure (JCP2:00-036-0340).
Hao et al. (2008) reported that the complete crystallization of NBT prepared via wet chemistry method is achieved at 1200oC for annealing duration of 2 hours.
Li, Synthesis of (Bi0.5Na0.5)TiO3 nanocrystalline powders by stearic acid gel method, Materials Chemistry and Physics 90 (2005) 282–285
Since few years ago, the wet chemistry method attracts attention of researchers as alternative method to synthesis piezoelectric.
Phase identification analysis confirmed that the crystalline phase is Na0.5Bi0.5TiO3 with rhombohedral crystal structure (JCP2:00-036-0340).
Hao et al. (2008) reported that the complete crystallization of NBT prepared via wet chemistry method is achieved at 1200oC for annealing duration of 2 hours.
Li, Synthesis of (Bi0.5Na0.5)TiO3 nanocrystalline powders by stearic acid gel method, Materials Chemistry and Physics 90 (2005) 282–285
Online since: June 2012
Authors: Zhao Ya Huang, Dong Zhang, Zhao Yi Tan
Preliminary Research on the Uptake Behavior of Ammonium Molybdophosphate for Cesium and the Corresponding Structural Transformation
Zhaoya Huang, Dong Zhang, Zhaoyi Tan*
Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan, 621900, P.R.
The results show that the Keggin structure of AMP stayed unchanged while new bonds arose after the Cs adsorption.
Characteristic peaks at 1608, 962, 869 and 785 cm-1 imply the presence of Keggin structure of [PMo12O40]3- [12].
In addition, the Cs adsorption onto AMP didn’t alter the Keggin structure of AMP molecule.
Journal of Inorganic Nuclear Chemistry, Volume 12, 1959, 95-103 [7] D.
The results show that the Keggin structure of AMP stayed unchanged while new bonds arose after the Cs adsorption.
Characteristic peaks at 1608, 962, 869 and 785 cm-1 imply the presence of Keggin structure of [PMo12O40]3- [12].
In addition, the Cs adsorption onto AMP didn’t alter the Keggin structure of AMP molecule.
Journal of Inorganic Nuclear Chemistry, Volume 12, 1959, 95-103 [7] D.
Online since: August 2007
Authors: Nuran Ay, I. Tore
B2O3 that was added was produced in laboratory and it
was in amorphous structure.
B2O3 phase in structure was detected at low intensities (Fig5), even increasing the amount of B2O3 not change their situation.
Representative back scattered image (SEM) and EDX results of the fracture surfaces of sintered pellets with Y2O3 (2 wt.%) Conclusions The structure and physical properties of presureless sintered hBN with B2O3, Y2O3 and without additive were studied.
Brotherton: Progress in Boron Chemistry, (Vol. 2, Pergamon Press, California, 1970), p. 211-311 [3] Gmelins Handbook of Inorganic Chemistry, Boron Compounds BN Special Issue, (8th edition, Springer Verlag, 1988), p. 1 -89
Uekı: J. of Solid State Chemistry Vol. 123 (1996), p. 215- 222 [6] K.
B2O3 phase in structure was detected at low intensities (Fig5), even increasing the amount of B2O3 not change their situation.
Representative back scattered image (SEM) and EDX results of the fracture surfaces of sintered pellets with Y2O3 (2 wt.%) Conclusions The structure and physical properties of presureless sintered hBN with B2O3, Y2O3 and without additive were studied.
Brotherton: Progress in Boron Chemistry, (Vol. 2, Pergamon Press, California, 1970), p. 211-311 [3] Gmelins Handbook of Inorganic Chemistry, Boron Compounds BN Special Issue, (8th edition, Springer Verlag, 1988), p. 1 -89
Uekı: J. of Solid State Chemistry Vol. 123 (1996), p. 215- 222 [6] K.
Online since: November 2012
Authors: J. Mohd Yatim, A. Arefnia, S.S.R. Koloor, M. Khalajmasoumi, I.S. Ibrahim
The flexural strength response of structure is plotted as load-deflection curve to show the stiffness that can be tolerated with the curvature structure.
The rigid bodies are formed same as the curvature surface of curvature structure along the length to simulate different pressure on the structure.
Rubber Chemistry and Technology, 1993. 66(5): p. 754-771
Rubber Chemistry and Technology, 1994. 67(3): p. 481-503
Yoshida, “Mechanism of Carbon-Black Reinforcement of Rubber Vulcanizate,” Rubber Chemistry and Technology, vol. 68, no.2, pp. 311–329, 1995
The rigid bodies are formed same as the curvature surface of curvature structure along the length to simulate different pressure on the structure.
Rubber Chemistry and Technology, 1993. 66(5): p. 754-771
Rubber Chemistry and Technology, 1994. 67(3): p. 481-503
Yoshida, “Mechanism of Carbon-Black Reinforcement of Rubber Vulcanizate,” Rubber Chemistry and Technology, vol. 68, no.2, pp. 311–329, 1995
Online since: February 2011
Authors: Xiao Dong Zhao, Xi Qiu Fan, Mei Ling Tian
At present, harbors, bridges, tunnels, marine engineering and constructions are increasingly developed in China, resulting in the rapid growth of reinforced concrete structures in coastal regions.
However, the corrosion problem of marine reinforced concrete structure is very serious, leading to great economic loss.
The concrete structures were completely removed in case of high degree of neutralization or severe cracks.
Giacomelli: Materials Chemistry and Physics Vol.83(2004), p.129-134
[8] Shandong Construction Standard (DBJ14-s6-2005), Design regulation of durability of concrete structures.
However, the corrosion problem of marine reinforced concrete structure is very serious, leading to great economic loss.
The concrete structures were completely removed in case of high degree of neutralization or severe cracks.
Giacomelli: Materials Chemistry and Physics Vol.83(2004), p.129-134
[8] Shandong Construction Standard (DBJ14-s6-2005), Design regulation of durability of concrete structures.