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Online since: March 2014
Authors: Kandasamy Jothivenkatachalam, A. Nithya, S. Prabhu, K. Jeganathan
(a)
(b)
(c)
Fig. 1 Structure of a.
Macroreticular structure with spherical particles of about 5–20nm.
Zhbankov, Study of the structure of cotton cellulose during biosynthesis by the spin-label method, Cellulose Chemistry and Technology. 20 (3) (1986) 277-287
Han, Band structures of TiO2 doped with N, C and B, J.
Bochmann, Advance Inorganic Chemistry.
Macroreticular structure with spherical particles of about 5–20nm.
Zhbankov, Study of the structure of cotton cellulose during biosynthesis by the spin-label method, Cellulose Chemistry and Technology. 20 (3) (1986) 277-287
Han, Band structures of TiO2 doped with N, C and B, J.
Bochmann, Advance Inorganic Chemistry.
Online since: October 2010
Authors: Ai Ju Li, Hong Yu Chen, Rui Zhen Li
Results and discussion
Metallographic structure of Pb–Ca–Sn–Al–Ag-La-Ce alloys.
Fig.1 shows the metallographic structure of four kinds of Pb–Ca–Sn–Al–Ag-La-Ce alloys.
That the metallographic structure of heptatomic alloys was similar to the pure lead suggested Pb–Ca–Sn–Al–Ag-La-Ce was a kind of uniform single-phase solid solution alloy.
The porous structure is favorable to the active material siiting in the apertures to contact the grid surface intimately with the effective.
Electroanalytical Chemistry, 2003, 543
Fig.1 shows the metallographic structure of four kinds of Pb–Ca–Sn–Al–Ag-La-Ce alloys.
That the metallographic structure of heptatomic alloys was similar to the pure lead suggested Pb–Ca–Sn–Al–Ag-La-Ce was a kind of uniform single-phase solid solution alloy.
The porous structure is favorable to the active material siiting in the apertures to contact the grid surface intimately with the effective.
Electroanalytical Chemistry, 2003, 543
Online since: July 2011
Authors: Zhi Meng Guo, Qing Ye, Jun Jie Hao
Adding organic compounds into the reaction solution through hydrothermal route[13,14] is another way to form a core/shell structure.
The structure of the samples were characterized by X-ray diffraction (Rigaku D/MAX-RB)with a Cu kα radiation.
Considering its special structure, the best way of surface modification is incipient wetness impregnation.
Chemistry Reviews. 1995,95(5):477-510
Journal of Physical Chemistry C. 2010,114(8): 3477-3482.
The structure of the samples were characterized by X-ray diffraction (Rigaku D/MAX-RB)with a Cu kα radiation.
Considering its special structure, the best way of surface modification is incipient wetness impregnation.
Chemistry Reviews. 1995,95(5):477-510
Journal of Physical Chemistry C. 2010,114(8): 3477-3482.
Online since: August 2013
Authors: Zong Yi Qin, Na Liu, Qian Wu, Fei Tian, Ya Qing Lu
Among those 1-D π-conjugated polymers, polyaniline (PANI) is considered as one of the most promising conducting polymer due to its unique properties such as acid/base doping/dedoping chemistry, facile processability, low cost and good environmental stability.
The chemical structures were characterized on a Nicolet NEXUS 670 FTIR spectrometer with a resolution of 4 cm-1 over 32 scans.
The crystalline structures were characterized on a RIGAKU D/Max–2550 PC X–ray diffraction (XRD) instrument.
Chemical structure.
Crystalline structure.
The chemical structures were characterized on a Nicolet NEXUS 670 FTIR spectrometer with a resolution of 4 cm-1 over 32 scans.
The crystalline structures were characterized on a RIGAKU D/Max–2550 PC X–ray diffraction (XRD) instrument.
Chemical structure.
Crystalline structure.
Online since: October 2010
Authors: Qun Jie Xu, Xiao Jin Zhou, Jin Guang Li, Yu Zeng Zhao, Qiao Xia Li
In addition, according to the ligand effect, the electronic structure of the surface atoms is changed so that the binding strength of adsorbed CO is weakened, thereby reduces the oxidation over-potential[6].
Fig. 1(b) indicated that Pt had decorated on Ru surface and Pt decorating presented as island structure[11].
This is because of forming island structure[13].
Cabrera: Surface Science, 463(1), (2000), p. 66 [7] Bing-Joe Hwang, Loka Subramanyam Sarma, Ching-Hsiang Chen, et al.: The Journal of Physical Chemistry C, 112(50), (2008), p. 19922 [8] R.
Balasubramanian, et al.: Electrochim Acta, 49(22-23), (2004), p. 3873 [12] Christina Bock, Chantal Paquet, Martin Couillard, et al.: J Am Chem Soc, 126(25), (2004), p. 8028 [13] Bingchen Du and Tong: The Journal of Physical Chemistry B, 109(38), (2005), p. 17775
Fig. 1(b) indicated that Pt had decorated on Ru surface and Pt decorating presented as island structure[11].
This is because of forming island structure[13].
Cabrera: Surface Science, 463(1), (2000), p. 66 [7] Bing-Joe Hwang, Loka Subramanyam Sarma, Ching-Hsiang Chen, et al.: The Journal of Physical Chemistry C, 112(50), (2008), p. 19922 [8] R.
Balasubramanian, et al.: Electrochim Acta, 49(22-23), (2004), p. 3873 [12] Christina Bock, Chantal Paquet, Martin Couillard, et al.: J Am Chem Soc, 126(25), (2004), p. 8028 [13] Bingchen Du and Tong: The Journal of Physical Chemistry B, 109(38), (2005), p. 17775
Online since: February 2014
Authors: Xi Zhang, Yan Yan Wang, Da Long Wang, Xin Xing Liu, Peng Xia, Miao Yu
Overall Design of Test Bench
The test bench is composed by tested cylinder bench, tested cylinder, driving cylinder bench, driving cylinder, stepper motor, T-steering gear, worm gear screw lift and rails. test bench structure diagram is shown in Figure 1.
The sealing structure of the tested cylinder designs for different forms according to different requirements and its piston rod can reciprocate driven by the driving cylinder piston rod while maintain a certain pressure, in order to simulate the working process of hydraulic support column and jack.
It’s very necessary or further reinforcing the function of test bench, improving the sealing structure testing standards and reducing the costs of manufacturers during product development and production.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
The sealing structure of the tested cylinder designs for different forms according to different requirements and its piston rod can reciprocate driven by the driving cylinder piston rod while maintain a certain pressure, in order to simulate the working process of hydraulic support column and jack.
It’s very necessary or further reinforcing the function of test bench, improving the sealing structure testing standards and reducing the costs of manufacturers during product development and production.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
Online since: September 2011
Authors: M. Malarvizhi, G. Subramanian, PR. Athappan
Athappanc
aPost Graduate and Research Department of Chemistry, The Madura College (Autonomous),
Madurai-625 011, Tamil Nadu, India.
email: malar_vishnu@yahoo.com bDepartment of Chemistry, PSYE Engg College, Sivagangai, Tamil Nadu, India.
Structure of tetraaza ligand Attempts to synthesize a completely conjugated stable tetraaza macrocyclics confirming to Huckel’s (4n+2) rule were also made.
Hughes, Inorganic Chemistry of Biological Processes, 2nd Eds., Wiley, New York, (1981)
Tinoco, Physical Chemistry of Nucleic Acids, Harper and Row, New York, (1974) pp 432
email: malar_vishnu@yahoo.com bDepartment of Chemistry, PSYE Engg College, Sivagangai, Tamil Nadu, India.
Structure of tetraaza ligand Attempts to synthesize a completely conjugated stable tetraaza macrocyclics confirming to Huckel’s (4n+2) rule were also made.
Hughes, Inorganic Chemistry of Biological Processes, 2nd Eds., Wiley, New York, (1981)
Tinoco, Physical Chemistry of Nucleic Acids, Harper and Row, New York, (1974) pp 432
Online since: October 2014
Authors: Jian Zhong Zhu, Ying Ding, Yang Cao, Gang Han, Chun Yan Wang, Rong Liang Fan, Liang Chen
These analyses reveal that the mesoporous carbon have ordered structure.
When the polymerization time of phenolic resin ranges from 0.5-1.5 hour, the spatial structure of mesoporous materials are mainly two-dimensional hexagonal and 3D structure[7].
They are consistent with the well-ordered body-centered mesoporous structure[10].
TrAC Trends in Analytical Chemistry. 2003, 22(10): 666-684
Chemistry of materials. 2006, 18(18): 4447-4464
When the polymerization time of phenolic resin ranges from 0.5-1.5 hour, the spatial structure of mesoporous materials are mainly two-dimensional hexagonal and 3D structure[7].
They are consistent with the well-ordered body-centered mesoporous structure[10].
TrAC Trends in Analytical Chemistry. 2003, 22(10): 666-684
Chemistry of materials. 2006, 18(18): 4447-4464
Online since: October 2014
Authors: Chun Tian Chen, Yu Long Qiao, Hai Feng Yang, Dong Sheng Wang, Qi Chao Shi, Li Juan He
The electronic structure of the models with anti-ferromagnetic is investigated and the results show that the cobalt 3d electrons have a great impact on the characteristics of the electronic structure of the zinc oxide.
Five Zn0.875Co0.125O models which have different structures are obtained, these models are called structure 1,2,3,4,5 respectively in the following.
Only the energy of ferromagnetic state of structure 5 is slightly lower than that of the anti-ferromagnetic configurations of structure 1, 2, 4.
Electronic structure.
The Journal of Physical Chemistry C, 115 (2011) 7706–7716
Five Zn0.875Co0.125O models which have different structures are obtained, these models are called structure 1,2,3,4,5 respectively in the following.
Only the energy of ferromagnetic state of structure 5 is slightly lower than that of the anti-ferromagnetic configurations of structure 1, 2, 4.
Electronic structure.
The Journal of Physical Chemistry C, 115 (2011) 7706–7716
Online since: October 2010
Authors: Yan Fang Chen, Qing Hua Chang, Er Hui Zhi, Xu Ping Wu, Jian Han
The Effect of Temperature on the Surface Chemistry of Aluminum Alloy P-Ni alloy Plating Quality
Qinghua Chang 1, a, Erhui Zhi 1, b, Xuping Wu 1,c, Jian Han 1,dand
Yanfang Chen 2, a
1 School of Materials Science and Engineering, Henan University of Science & Technology,
Luoyang, Henan, 471003, China;
2Henan key laboratory of non-ferrous metal materials science and processing,
Luoyang, Henan, 471003, China;
aqinghuachang@126.com, bzhierhui@126.com,
cwuxvping@126.com, dhappyhanjian@126.com
Keywords: Aluminum alloy, Electroless nickel-phosphor plating, Plating speed, Surface morphology, Corrosion resistance, Temperature
Abstract.
Using the radio method and taking temperature of 65℃, 70℃, 75℃, 80℃, 85℃ after selecting the PH value, then test can be used JSM-5610LV scanning electron microscope with EDS observing coating surface morphology and composition distribution of the specimen, using D8ADVANCE X-ray diffraction of Germany BRUX to detect crystalline structure of the chemical coating; with LK9805 electrochemical analyzer measuring polarization curves, and to find the best temperature and range[7].
From the data available we can obtain that when P≤3% the coating is crystal structure, when P≥8% the coating is amorphous, when 3%<P<8% the coating is the mixture of crystal and amorphous.
According to phosphorus content the changing rule of P-Ni coating’s structure:crystal, crystal microcrystalline-microcrystalline-microcrystalline+amorphous-amorphous.
This is because the changes of phosphorus content lead to changes in the internal structure of coating[9-11].
Using the radio method and taking temperature of 65℃, 70℃, 75℃, 80℃, 85℃ after selecting the PH value, then test can be used JSM-5610LV scanning electron microscope with EDS observing coating surface morphology and composition distribution of the specimen, using D8ADVANCE X-ray diffraction of Germany BRUX to detect crystalline structure of the chemical coating; with LK9805 electrochemical analyzer measuring polarization curves, and to find the best temperature and range[7].
From the data available we can obtain that when P≤3% the coating is crystal structure, when P≥8% the coating is amorphous, when 3%<P<8% the coating is the mixture of crystal and amorphous.
According to phosphorus content the changing rule of P-Ni coating’s structure:crystal, crystal microcrystalline-microcrystalline-microcrystalline+amorphous-amorphous.
This is because the changes of phosphorus content lead to changes in the internal structure of coating[9-11].