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Online since: July 2007
Authors: Yang Leng, Ping Gao, Li Ming Fang
The Ca-P structure was identified as octacalcium
phosphate (OCP) by SEM, TEM, and ToF-SIMS.
The composites showed microstructure with nano HA particles dispersed homogeneously in the UHMWPE inter-fibril spaces and formed an interpenetration network structure.
The crystal structure and surface chemistry of Ca-P layer was examined by transmission electron microscopy (TEM, JEOL 2010) and Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS, PHI 7200)
� Ca-P layer structure.
Analytical Chemistry. 71(1999), p. 149. 60 80 100 0 500 1000 1500 m/z Counts -PO3 -PO2 Substrate 63 79 - 3 2PO PO 0.65/ 0.70 0.89 = = 60 80 100 0 1 2 3 4 5 x 104 m/z Counts -C3H2N -PO2 -C2N3 Ca-P layer 63 79 - 3 2PO PO 0.72/ 0.68 1.06 = =
The composites showed microstructure with nano HA particles dispersed homogeneously in the UHMWPE inter-fibril spaces and formed an interpenetration network structure.
The crystal structure and surface chemistry of Ca-P layer was examined by transmission electron microscopy (TEM, JEOL 2010) and Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS, PHI 7200)
� Ca-P layer structure.
Analytical Chemistry. 71(1999), p. 149. 60 80 100 0 500 1000 1500 m/z Counts -PO3 -PO2 Substrate 63 79 - 3 2PO PO 0.65/ 0.70 0.89 = = 60 80 100 0 1 2 3 4 5 x 104 m/z Counts -C3H2N -PO2 -C2N3 Ca-P layer 63 79 - 3 2PO PO 0.72/ 0.68 1.06 = =
Online since: August 2022
Authors: Mudasir Mudasir, Dwi Siswanta, Dadan Hermawan, Ulfa Rahmawati Putri
The structure of ibuprofen is treated as a ligand in the docking.
Chemical structure of ibuprofen Molecular docking.
Geometry optimization is an important part of the basis of computational chemistry.
Carvalho, Molecular modeling: origin, fundamental concepts and applications using structure-activity relationship and quantitative structure-activity relationship, Rev.
Namboori, Computational chemistry and molecular modeling principles and applications, Springer Verlag, Berlin, 2008
Chemical structure of ibuprofen Molecular docking.
Geometry optimization is an important part of the basis of computational chemistry.
Carvalho, Molecular modeling: origin, fundamental concepts and applications using structure-activity relationship and quantitative structure-activity relationship, Rev.
Namboori, Computational chemistry and molecular modeling principles and applications, Springer Verlag, Berlin, 2008
Online since: February 2012
Authors: Gai Rong Chen, Chao Lin Miao, Lu Shi, Dong Mei Dai
Preparation of Precursor of Lini0.5mn1.5o4 with High Density
Chaolin Miao1,a, Lu Shi1,b, Gairong Chen1,c and Dongmei Dai2,d,*
1College of Chemistry and Chemical Engineering,
Xinxiang University, Xinxiang 453003, China
2School of Chemistry and Environmental Science,
Henan Normal University, Xinxiang 453000, China
axiaomiao777@126.com, blulus1987@163.com, cxxcgr@163.com, dmiaochaolin@163.com
*Corresponding author: Dongmei Dai.
Sample C have the highest density among the samples, because the aggregation agent can form a mesh structure and the sol molecule can reunion into a spherical structure, which makes the molecule close to each other and water molecules are squeezed out.
Therefore, the linear molecules cannot be fully expanded and thus, cannot form a good network structure.
Molecules of the agent can form a good network structure, and at this moment the coagulation agent has the best aggregated effect, so the tap density of the sample is highest.
[10] C.Delmas, C.Tessier, Journal of Materials Chemistry [J], 1997, 7(8): 453.
Sample C have the highest density among the samples, because the aggregation agent can form a mesh structure and the sol molecule can reunion into a spherical structure, which makes the molecule close to each other and water molecules are squeezed out.
Therefore, the linear molecules cannot be fully expanded and thus, cannot form a good network structure.
Molecules of the agent can form a good network structure, and at this moment the coagulation agent has the best aggregated effect, so the tap density of the sample is highest.
[10] C.Delmas, C.Tessier, Journal of Materials Chemistry [J], 1997, 7(8): 453.
Online since: July 2015
Authors: Bi Fu, Ji Fei Liu, Jian Feng Dai
The residual SO42- concentration in liquid chemistry synthesis will influence the samples on layered structure, crystallinity and the battery parameters leads to the self-discharge, corrosion and diaphragm perforation.
The morphology of the spheres was examined by scanning electronic microscopy (SEM, JSM-6700F) operated at 20 kV and microscopic structure was evaluated with the high-resolution transmission electron microscopy (HRTEM, JEM-200CX).
It is possible that the cycle test for a long time which SO42- have influence on the layered structure of the material slowly lead to lithium ion deintercalation incomplete.
Layered lithium transition metal oxide cathodes towards high energy lithium-ion batteries, J.Materials Chemistry, 22 (2012) 3680-3695
R, Synthesis, characterization, and thermal stability of Li[Ni1/3Mn1/3Co1/3−z(Mn Mg)z/2]O2, Chemistry of Materials, 22 (2010) 5065-5073
The morphology of the spheres was examined by scanning electronic microscopy (SEM, JSM-6700F) operated at 20 kV and microscopic structure was evaluated with the high-resolution transmission electron microscopy (HRTEM, JEM-200CX).
It is possible that the cycle test for a long time which SO42- have influence on the layered structure of the material slowly lead to lithium ion deintercalation incomplete.
Layered lithium transition metal oxide cathodes towards high energy lithium-ion batteries, J.Materials Chemistry, 22 (2012) 3680-3695
R, Synthesis, characterization, and thermal stability of Li[Ni1/3Mn1/3Co1/3−z(Mn Mg)z/2]O2, Chemistry of Materials, 22 (2010) 5065-5073
Online since: September 2011
Authors: Jian Ming Jiang, Guang Li, Xin Mo
The structure of PIs was confirmed by FT-IR, 1H-NMR and elemental analysis.
Moreover, the elemental analysis results of the PIs also generally agreed with the calculated values for the proposed structure.
Voit, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 2000, 38, 2505-2525
Jiang, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 2009, 47, 3309-3317
Jiang, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 2010, 48, 3281-3289
Moreover, the elemental analysis results of the PIs also generally agreed with the calculated values for the proposed structure.
Voit, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 2000, 38, 2505-2525
Jiang, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 2009, 47, 3309-3317
Jiang, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 2010, 48, 3281-3289
Online since: October 2012
Authors: Yong Hong Zhou, Li Hong Hu, Cheng Guo Liu
As one of the most widely applied renewable resources, plant oils are suitable starting materials for polymers because of their low cost, the rich chemistry that their triglyceride structure provides, and their potential biodegradability [1].
One is to introduce polymerizable functional groups onto the triglyceride structure by using reactive sites available.
The initiators tert-butyl peroxy benzoate and benzoyl peroxide, the accelerator N, N-Dimethylaniline were obtained from Aladdin Chemistry Co.
Schafer, Oils and fats as renewable raw materials in chemistry, Angew.
Larock, Synthesis, structure and properties of new tung oil-styrene-divinylbenzene copolymers prepared by thermal polymerization, Biomacromolecules 4 (2003)1018-1025
One is to introduce polymerizable functional groups onto the triglyceride structure by using reactive sites available.
The initiators tert-butyl peroxy benzoate and benzoyl peroxide, the accelerator N, N-Dimethylaniline were obtained from Aladdin Chemistry Co.
Schafer, Oils and fats as renewable raw materials in chemistry, Angew.
Larock, Synthesis, structure and properties of new tung oil-styrene-divinylbenzene copolymers prepared by thermal polymerization, Biomacromolecules 4 (2003)1018-1025
Online since: November 2014
Authors: Rui Zhang, Yan Xue, Dong Xiao Fu, Hui Li, Zhen Hua Du, Chuan Ping
Finite element simulation analysis of micro thermoelectric switch structure
Ping Chuan1,a, Zhang Rui1,a, Xue Yan1,a, Fu Dongxiao1,a, Li hui1,a, Du Zhenhua1,a
1 Science and Technology on Applied Physical Chemistry Laboratory,Shaanxi Applied Physics-Chemistry Research Institute. shanxi xi’an,China,710061
ayima2012@126.com
Keywords: MEMS thermoelectric switch; FEA; static; transient; temperature distributing; response time; stress distributing
Abstract: Considering of the thermal resistant of metal Ni-Cr, as well as the insulating characteristic of SiO2 membrane, aluminium electric line, energetic material, solder and other materials, we designed three MEMS thermo-electric switches, which can realize On-Off(or Off-On) transition to control the initiation of weapon system.
The structures and sizes of micro-switches are determined.
Fig. 1 Structure of thermal ON-OFF microswitch and Ni-Cr bridge film (2) Pyrotechnical On-Off microswitch When the on-off switching is required, the microheater heats up energetic material contained in the cavity underneath silicon dioxide membrane [3][4].The silicon dioxide membrane and electrical line are broken by the initiate of energetic material.
Fig. 2 Structure of pyrotechnic ON-OFF microswitch (3) Thermal Off-On microswitch Thermal off-on microswitch is also divided into several layers (Figure 3).Ni-Cr bridge film is deposited on glass substrate[3][4].Silicon dioxide layer as an insulator and support electrical line.
Fig. 3 Structure of thermal OFF-ON microswitch and electrical wire 1.2 Experiment progress (1) The 3D models were established with geometry module (Figure 4),The models were meshed with body sizing method, each element size is about several micrometers.
The structures and sizes of micro-switches are determined.
Fig. 1 Structure of thermal ON-OFF microswitch and Ni-Cr bridge film (2) Pyrotechnical On-Off microswitch When the on-off switching is required, the microheater heats up energetic material contained in the cavity underneath silicon dioxide membrane [3][4].The silicon dioxide membrane and electrical line are broken by the initiate of energetic material.
Fig. 2 Structure of pyrotechnic ON-OFF microswitch (3) Thermal Off-On microswitch Thermal off-on microswitch is also divided into several layers (Figure 3).Ni-Cr bridge film is deposited on glass substrate[3][4].Silicon dioxide layer as an insulator and support electrical line.
Fig. 3 Structure of thermal OFF-ON microswitch and electrical wire 1.2 Experiment progress (1) The 3D models were established with geometry module (Figure 4),The models were meshed with body sizing method, each element size is about several micrometers.
Online since: January 2013
Authors: Chuan Guo Ma, Ming Liu, Rui Shi, Dong Yong Xi
In the past ten years, because of their unique structure and excellent properties like light, electric, magnet and advance mechanical properties, carbon nanotubes (CNTs) were widely used in chemistry, physics, biology, electronics and material sciences and many other areas[3].
Especially, structure and electrical properties of the CPC were studied.
For CNTs/EP/PEI, the inverted-phase structure occurs like that mentioned in the literature [7].
So the PEI-rich phase containing CNTs basically forms a three-dimensional continuous network structure.
Wu: Materials Chemistry and Physics Vol. 104(2007), p. 240
Especially, structure and electrical properties of the CPC were studied.
For CNTs/EP/PEI, the inverted-phase structure occurs like that mentioned in the literature [7].
So the PEI-rich phase containing CNTs basically forms a three-dimensional continuous network structure.
Wu: Materials Chemistry and Physics Vol. 104(2007), p. 240
Online since: October 2011
Authors: Gui Xiong Shi, Guo Jun Zhang, Xiao Yao Wang, Xi Bao Liu, Jiao Xu
Through theoretical calculation and finite element simulation of the sensitive structure of the error analysis.
The vibration table is equipped with standard accelerometer and tested micro-structure.
By analyzing the hydrophone source of error in chip structure.
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 vibration table is equipped with standard accelerometer and tested micro-structure.
By analyzing the hydrophone source of error in chip structure.
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: July 2015
Authors: Olaf Diestel, Thomas Götze, Gert Heinrich, André Hürkamp, Michael Kaliske, Rico Hickmann, Chokri Cherif
The effects of these treatments have been characterized by determining the surface energy, and the residual tensile strength as well as by analyzing the surface chemistry.
Therein, PPS theoretical is calculated out of the chemical structure of PPS.
Especially, a high content of oxygen in the fiber’s surface chemistry is necessary for a high polar part of the surface energy, because this indicates the presence of functionalized groups (e.g.
Results of the XPS analysis (*PPS theoretical is calculated out of the chemical structure) Chemical element C [At%] O [At%] S [At%] Si [At%] PPS theoretical* 85.7 0.0 14.3 0.0 PPS desized 85.5 7.4 6.5 0.6 PPS air plasma 2 kW, 120 s 86.2 12.0 0.6 1.2 The results of the tensile tests are summarized in Table 3.
Therein, PPS theoretical is calculated out of the chemical structure of PPS.
Especially, a high content of oxygen in the fiber’s surface chemistry is necessary for a high polar part of the surface energy, because this indicates the presence of functionalized groups (e.g.
Results of the XPS analysis (*PPS theoretical is calculated out of the chemical structure) Chemical element C [At%] O [At%] S [At%] Si [At%] PPS theoretical* 85.7 0.0 14.3 0.0 PPS desized 85.5 7.4 6.5 0.6 PPS air plasma 2 kW, 120 s 86.2 12.0 0.6 1.2 The results of the tensile tests are summarized in Table 3.