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Online since: December 2013
Authors: Zhao Miao Liu, Li Kun Liu
During the last decade, applications have been carried out in a number of different fields which range from chemistry and chemical engineering to biology and medicine [3, 4].
Structured hexahedral grid is used and the number of the grids is concentrated in 70,000~ 80,000 through the grid-independent validation.
Reinhoudt, A. van den Berg: On-microchip multiphase chemistry-a review of microreactor design principles and reagent contacting modes.
Structured hexahedral grid is used and the number of the grids is concentrated in 70,000~ 80,000 through the grid-independent validation.
Reinhoudt, A. van den Berg: On-microchip multiphase chemistry-a review of microreactor design principles and reagent contacting modes.
Online since: December 2013
Authors: Abdus Samad Mahmud, Nazihah Nawawi
Analytical and Bioanalytical Chemistry, 2005. 381(3): p. 557-567
[13]Vojtech, D., et al., Surface structure and corrosion resistance of short-time heat-treated NiTi shape memory alloy.
Leitner, Influence of a controlled oxidation at moderate temperatures on the surface chemistry of nitinol wire.
[13]Vojtech, D., et al., Surface structure and corrosion resistance of short-time heat-treated NiTi shape memory alloy.
Leitner, Influence of a controlled oxidation at moderate temperatures on the surface chemistry of nitinol wire.
Online since: November 2013
Authors: Amirsalar Khandan, Ebrahim Karamian, Niosha Rafiaei, Hassan Gheisari, Mustafa Eslami
Basic apatite structure is hexagonal with space group P63/m, although a few monoclinic forms with space group P1121/b were also reported [6].
The emphasis was placed on the relationship of the structure (or LCs) and atomic properties of these apatites.
Therefore, it is important to determine the lattice structure with the highest precision.
Structure, Unit Cell, of HA [8] Materials and Methods Bovine bones were boiled for 2 h to remove flesh and fat.
Structure and chemistry of the apatites and other calcium orthophosphates.
The emphasis was placed on the relationship of the structure (or LCs) and atomic properties of these apatites.
Therefore, it is important to determine the lattice structure with the highest precision.
Structure, Unit Cell, of HA [8] Materials and Methods Bovine bones were boiled for 2 h to remove flesh and fat.
Structure and chemistry of the apatites and other calcium orthophosphates.
Online since: December 2013
Authors: Abdul Razak Daud, Dewi Suriyani Che Halin, Ibrahim Abu Talib, Muhammad Azmi Abdul Hamid
The effects of annealing atmosphere on the structure and morphology of copper oxide thin films are reported.
CuO is unique as it has a square planar coordination of copper by oxygen in the monoclinic structure [6].
While, the films annealed at 400˚C shows the roughest surface structure as it has the smallest grain size.
As is seen in Table 1, with rise in annealing temperature, the surface structures are found to be rougher.
Basaran, Materials Chemistry and Physics 83 (2004), p. 140 [6] U.
CuO is unique as it has a square planar coordination of copper by oxygen in the monoclinic structure [6].
While, the films annealed at 400˚C shows the roughest surface structure as it has the smallest grain size.
As is seen in Table 1, with rise in annealing temperature, the surface structures are found to be rougher.
Basaran, Materials Chemistry and Physics 83 (2004), p. 140 [6] U.
Online since: July 2019
Authors: Xiang Yu Ren, Hui Chen, Hong Bo Liu, Jing Wu
New insights into the structure and reduction ofgraphite oxide[J].
Nature Chemistry ,2009,1(5):403-408
Influence of interface structure on dielectric properties of epoxy/alumina nanocomposites[J].
Thermal conductivity and structure of non-covalent functionalized graphene/epoxy composites[J].
Journal of Physical Chemistry C, 2011, 115(42):20740-20746
Nature Chemistry ,2009,1(5):403-408
Influence of interface structure on dielectric properties of epoxy/alumina nanocomposites[J].
Thermal conductivity and structure of non-covalent functionalized graphene/epoxy composites[J].
Journal of Physical Chemistry C, 2011, 115(42):20740-20746
Online since: April 2008
Authors: Albena Bachvarova-Nedelcheva, Yanko B. Dimitriev, Reni Iordanova
Structural Models of Selenite Glasses Containing Ag
+ and Cu
2+ Ions
Albena Bachvarova-Nedelcheva1,a, Reni Iordanova1,b and
Yanko Dimitriev
2,c
1
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences,
G.
Glass formation and glass structure Pure SeO2 was not vitrified.
An analogy with the crystal structure of the phases in the corresponding binary equilibrium systems has been made also.
As the silver ions are located mainly near SeO3 units, polymerized molybdate octahedra remain in the glass structure.
The crystal structure of the CuSe2O5 phase consists of pyro groups (Se2O5) containing bridging Se-O-Se bonds and terminal SeO2 units [26].
Glass formation and glass structure Pure SeO2 was not vitrified.
An analogy with the crystal structure of the phases in the corresponding binary equilibrium systems has been made also.
As the silver ions are located mainly near SeO3 units, polymerized molybdate octahedra remain in the glass structure.
The crystal structure of the CuSe2O5 phase consists of pyro groups (Se2O5) containing bridging Se-O-Se bonds and terminal SeO2 units [26].
Online since: October 2011
Authors: He Qin Xing, Xiu Qi Liu
America), Dicumyl peroxide (DCP) (Shanghai Chemical Co., China), Liquid olefin (Zhenhai Institute of Applied Chemistry, China).
Main-chain is saturated structure and the toluene is saturates, because of the structures of main- chain and toluene are similar, EPDM can adsorb toluene.
Waste dusty slag could reduce some intermolecular interaction of polymer chains and form many channels in the network structure, and the toluene molecule could carry into the network structure easily and increase the cubage in network structure.
EPDM was cross linked with DCP; a network structure was formed in EPDM.
The toluene molecule can come into the network structure easily.
Main-chain is saturated structure and the toluene is saturates, because of the structures of main- chain and toluene are similar, EPDM can adsorb toluene.
Waste dusty slag could reduce some intermolecular interaction of polymer chains and form many channels in the network structure, and the toluene molecule could carry into the network structure easily and increase the cubage in network structure.
EPDM was cross linked with DCP; a network structure was formed in EPDM.
The toluene molecule can come into the network structure easily.
Online since: January 2013
Authors: Xiang Zhang, Chang Ling Fan, Shao Chang Han, Yong Mei Bai, Ke He Zhang, Jin Chen, Ling Fang Li
XRD patterns show that the LFPC composites possess the typical olivine structure.
The crystallite structure of LFPC was performed by using a D-MAX2500VB X-ray diffraction instrument (XRD, Rigaku Co., Japan).
The electrical conductivity of powder were determined with the two-electrode method by the connection of a GM-II resistivity tester (Coal chemistry institute, China) and a 34401A type 6 1/2 Digit multimeter (Agilent Co., USA).
This indicates that they possess the typical ordered olivine structure.
From it we know that the network structure exists in the nano particles and is constructed by many smaller granules in it.
The crystallite structure of LFPC was performed by using a D-MAX2500VB X-ray diffraction instrument (XRD, Rigaku Co., Japan).
The electrical conductivity of powder were determined with the two-electrode method by the connection of a GM-II resistivity tester (Coal chemistry institute, China) and a 34401A type 6 1/2 Digit multimeter (Agilent Co., USA).
This indicates that they possess the typical ordered olivine structure.
From it we know that the network structure exists in the nano particles and is constructed by many smaller granules in it.
Online since: August 2019
Authors: Dzhul’etta A. Beeva, Aues A. Beev, S.Yu. Khashirova, V.Z. Aloev, M.U. Shokumova
In the present paper, some features of the synthesis of copoly(arylene ether ether ketone) by nucleophilic substitution reaction are considered, the dependencies of the reduced viscosity of copolyesters on the chemical structure of diols and the conditions of the copolycondensation processes are clarified.
By varying the chemical structure of dioxysilane compounds and activated aromatics, it is possible to synthesize SPAEC with a wide range of predetermined useful performance indicators [7].
Factors such as the chemical structure of the functional groups involved in the reaction, the chemical nature of the nucleophilic and electrophilic reagents, the nature of the solvent used, the molar ratio of the reacting components and their concentration, possible side reactions, the chemical nature of the catalysts, temperature and others.
As disadvantages of the considered method of obtaining PAEK and SPAEEK, it is possible to note the insufficiently good solubility of polyesters, first of all, of crystalline structure, in the most affordable cheap solvents, the difficulty of washing the by-products of the reaction - alkali and alkaline-earth metal halides from polymers.
Aromatic Copolyether Ether Ketones Derived From Hydroquinone, Fibre Chemistry. 49-6 (2017) 411. https://doi.org/10.1007/s10692-018-9910-6 [7] V.V.
By varying the chemical structure of dioxysilane compounds and activated aromatics, it is possible to synthesize SPAEC with a wide range of predetermined useful performance indicators [7].
Factors such as the chemical structure of the functional groups involved in the reaction, the chemical nature of the nucleophilic and electrophilic reagents, the nature of the solvent used, the molar ratio of the reacting components and their concentration, possible side reactions, the chemical nature of the catalysts, temperature and others.
As disadvantages of the considered method of obtaining PAEK and SPAEEK, it is possible to note the insufficiently good solubility of polyesters, first of all, of crystalline structure, in the most affordable cheap solvents, the difficulty of washing the by-products of the reaction - alkali and alkaline-earth metal halides from polymers.
Aromatic Copolyether Ether Ketones Derived From Hydroquinone, Fibre Chemistry. 49-6 (2017) 411. https://doi.org/10.1007/s10692-018-9910-6 [7] V.V.
Online since: July 2012
Authors: Hong Yan Lin
L-(-)-dibenzoyltartaric acid was used to resolve DL-ephedrine to get optically pure isomers D-(-)-ephedrine and L-(+)-ephedrine.Chemical structure was confirmed by IR and optical purify was up to grade.
This paper synthetizes DL-Ephedrine according to the references [1], and resolute it, finally obtain the product with determined structure and qualified rotation.
As showed in figure, it has the following characteristic peaks(cm-1): 3331,2976,2840,2759,2468,1590,1491,1455,1332,1049,992,752,which are consistent with characteristic peaks of L-(+)-ephedrine hydrochloride according to the report of references[3], visibly the structure is accurate, and the resolution is fine.
Chemical structure was confirmed by IR and optical purify was up to grade.
Chinese Journal of Medicinal Chemistry, 2008,18(3):195~199.
This paper synthetizes DL-Ephedrine according to the references [1], and resolute it, finally obtain the product with determined structure and qualified rotation.
As showed in figure, it has the following characteristic peaks(cm-1): 3331,2976,2840,2759,2468,1590,1491,1455,1332,1049,992,752,which are consistent with characteristic peaks of L-(+)-ephedrine hydrochloride according to the report of references[3], visibly the structure is accurate, and the resolution is fine.
Chemical structure was confirmed by IR and optical purify was up to grade.
Chinese Journal of Medicinal Chemistry, 2008,18(3):195~199.