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Online since: July 2021
Authors: Pavlo V. Kryvenko, Oleh Petropavlovskyi, Igor Rudenko, Volodimir I. Gots, Oleksandr P. Konstantynovskyi
This way the disturbance of reinforcement passive state can be caused by changes in hardened concrete structure.
Moreover, this salt decreases of capillary pore network of artificial stone due to structure densification through formation of hydroxyapatite Са10(РО4)6(ОН)2 [18].
Decreasing shrinkage is caused by water-reducing effect as well as by influence of SRA on structure formation of artificial stone that can explain different strength.
Provis, J.S.J. van Deventer, Geopolymers and Other Alkali-Activated Materials, in book: Lea's Chemistry of Cement and Concrete, Elsevier (2019) 779-805. doi: https://doi.org/ 10.1016/B978-0-08-100773-0.00016-2 [7] P.
Gots, Structure formation upon hardening of slag-alkali binder: Journal of applied chemistry of the USSR 59, 3 pt 1 (1986) 542-546 [9] P.
Moreover, this salt decreases of capillary pore network of artificial stone due to structure densification through formation of hydroxyapatite Са10(РО4)6(ОН)2 [18].
Decreasing shrinkage is caused by water-reducing effect as well as by influence of SRA on structure formation of artificial stone that can explain different strength.
Provis, J.S.J. van Deventer, Geopolymers and Other Alkali-Activated Materials, in book: Lea's Chemistry of Cement and Concrete, Elsevier (2019) 779-805. doi: https://doi.org/ 10.1016/B978-0-08-100773-0.00016-2 [7] P.
Gots, Structure formation upon hardening of slag-alkali binder: Journal of applied chemistry of the USSR 59, 3 pt 1 (1986) 542-546 [9] P.
Online since: February 2014
Authors: Ling Ling Ma, Ying Feng, Zhi Ming Wang, Xiao Juan Zhang
Take the in-situ reaction with benzene-1,2-diamine for example, it was the realization of multi-tune in photoelectric function of the matrix polymer through the change of reactive polymer structures.
In these materials, the structures containing phenanthrene or deactivates had attracted more and more attention due to their high optical and thermal stability.[1] Phenanthrene-9,10-dione (PQ), as an important intermediate in organic chemistry, played an important role in the preparation of phenanthrene and its derivatives.
The multi-modulation could be realized from sole polymer such as the chemical structure, fluorescence color, quantum efficiency level, structure and the ability of electron injection, etc.
Through changing the structure of benzene-1,2-diamine materials that involved in the reaction, the synthetic method was developed in polymer system.
This result indicated that the structure changes of substrate in reactive polymer could realize double tunings for their photoelectric property in target polymer.
In these materials, the structures containing phenanthrene or deactivates had attracted more and more attention due to their high optical and thermal stability.[1] Phenanthrene-9,10-dione (PQ), as an important intermediate in organic chemistry, played an important role in the preparation of phenanthrene and its derivatives.
The multi-modulation could be realized from sole polymer such as the chemical structure, fluorescence color, quantum efficiency level, structure and the ability of electron injection, etc.
Through changing the structure of benzene-1,2-diamine materials that involved in the reaction, the synthetic method was developed in polymer system.
This result indicated that the structure changes of substrate in reactive polymer could realize double tunings for their photoelectric property in target polymer.
Online since: April 2013
Authors: Xi Liang Chen, Qing Nan Shi
These helices act as the crosslinks and connect the molecules to form three-dimensional network structure.
Macromolecular Chemistry and Physics. 199(1998)1547-1554
Influence of thermal treatments on the structure and stability of gealtin gels.
Collagen structure in solution. Ⅲ.
Gelation and micelle structure changes of aqueous polymer solutions.
Macromolecular Chemistry and Physics. 199(1998)1547-1554
Influence of thermal treatments on the structure and stability of gealtin gels.
Collagen structure in solution. Ⅲ.
Gelation and micelle structure changes of aqueous polymer solutions.
Online since: October 2011
Authors: Jian Ming Li, Jing Gui Wu
Effects of the different organic materials on the structure
and elemental composition of humus in black soil
Jianming Li1,a, Jinggui Wu1,b
1College of Resource and Environment Science, Jilin Agricultural University,
China 130118
aljmok1986@hotmail.com, bjgwu68@sohu.com(corresponding author)
Key Words: Structure, Elemental composition, Humic substance, Organic material
Abstract.
Elemental Analyzers and Infrared Spectrometer was used to study the effects of the different organic materials on the structure and elemental composition of humus in black soil.
So, in this paper, the pot experiment was conducted to study the effect of application of different organic materials on the structure and elemental composition of humus in black soil, the objectives of that was to provide evidences for diagnosis technique of organic materials.
Structure of HS HA FA HMc HMi Fig. 1 Effect of the different organic materials on the IR of HS in black soil 1.
[10]Yanchun Xiao, Sen Dou: Chinese Journal of Analytical Chemistry(In Chinese), Vol.35(2007),p.1596-1600 [11]R.
Elemental Analyzers and Infrared Spectrometer was used to study the effects of the different organic materials on the structure and elemental composition of humus in black soil.
So, in this paper, the pot experiment was conducted to study the effect of application of different organic materials on the structure and elemental composition of humus in black soil, the objectives of that was to provide evidences for diagnosis technique of organic materials.
Structure of HS HA FA HMc HMi Fig. 1 Effect of the different organic materials on the IR of HS in black soil 1.
[10]Yanchun Xiao, Sen Dou: Chinese Journal of Analytical Chemistry(In Chinese), Vol.35(2007),p.1596-1600 [11]R.
Online since: October 2010
Authors: Rafael Cardoso Toledo, I.N. Bandeira, M.B. Mattos, Chen Y. An
Droplets, with diameters in the range of 200 to 400 mm, solidified under microgravity, were obtained consistently with irregular ternary eutectic structure, whereas, previous results under normal gravity presented both regular lamellar and irregular structures.
Structure morphologies of all samples were investigated by using a JEOL/SEM model 5310.
Besides the presence of the primary phase can change the growth direction, which affects the regular eutectic solidification and consequently leads to degeneration of eutectic structure.
Droplets, with diameters in the range of 200 to 400 mm, solidified under microgravity, were obtained consistently with irregular ternary eutectic structure, whereas samples solidified under normal gravity presented both regular lamellar and irregular structures.
Landolt-Börnstein - Group IV Physical Chemistry: Numerical Data and Functional Relationships in Science and Technology, v.
Structure morphologies of all samples were investigated by using a JEOL/SEM model 5310.
Besides the presence of the primary phase can change the growth direction, which affects the regular eutectic solidification and consequently leads to degeneration of eutectic structure.
Droplets, with diameters in the range of 200 to 400 mm, solidified under microgravity, were obtained consistently with irregular ternary eutectic structure, whereas samples solidified under normal gravity presented both regular lamellar and irregular structures.
Landolt-Börnstein - Group IV Physical Chemistry: Numerical Data and Functional Relationships in Science and Technology, v.
Online since: April 2007
Authors: Chuan Bin Wang, Qiang Shen, Lian Meng Zhang, Yan Sheng Gong
The effect of substrate
temperature on the structure and electrical properties of IrO2 films was investigated.
The properties of the IrO2 films employed in any of these applications will be sensitive to the structure of the films, which will be influenced by the method and the conditions of film preparation.
In this paper, IrO2 thin films were prepared by PLD technique and the effect of substrate temperature on the structure, morphology, and resistivity of IrO2 films were investigated.
Kawar: Materials Chemistry and Physics Vol. 80 (2003), p. 667
The properties of the IrO2 films employed in any of these applications will be sensitive to the structure of the films, which will be influenced by the method and the conditions of film preparation.
In this paper, IrO2 thin films were prepared by PLD technique and the effect of substrate temperature on the structure, morphology, and resistivity of IrO2 films were investigated.
Kawar: Materials Chemistry and Physics Vol. 80 (2003), p. 667
Online since: February 2011
Authors: Ren Qing Wang
The structure, morphology and luminescent properties of the phosphors were characterized by XRD,SEM,UV and PL-PLE spectra respectively.The results showed that the CaMgSi2O6:Tb3+,Li+ was base-centered monoclinic crystals, the phosphor particle distributed uniformly.The phosphor has a strong absorptive capacity excited by 230 nm ultraviolet ray, and could emit the strong green light with the wavelength of 543 nm(5D4→7F5).
It shows that Diffraction angle is well coincident with JCPDS (No.01-075-1092) of CaMgSi2O6.The crystal structure is base-centered monoclinic crystal, a=9.741,b=8.919,c=2.257.
From above, it is easy to see that Tb3+ and Li+ ions did not change the crystal structure of CaMgSi2O6.
Su et al: Journal of SolidState Chemistry, Vol.167 (2002), p. 435
It shows that Diffraction angle is well coincident with JCPDS (No.01-075-1092) of CaMgSi2O6.The crystal structure is base-centered monoclinic crystal, a=9.741,b=8.919,c=2.257.
From above, it is easy to see that Tb3+ and Li+ ions did not change the crystal structure of CaMgSi2O6.
Su et al: Journal of SolidState Chemistry, Vol.167 (2002), p. 435
Online since: December 2012
Authors: Subrata Ray
I took the courses on quantum chemistry and ligand field theory in the department of chemistry.
Our plan was to calculate cohesive energy of competing structures and examine the situation.
Metal is often used in primary structures and are joined to polymers, which are employed in secondary structures.
[3] A process for controlling metal foam structure to obtain high strength (by B.S.S.
Ray, “Modification of the structure of multi-walled carbon nanotubes bychoice of catalyst and their electro-chemical behavior” Materials Chemistry and Physics, Vol. 120, (2010) 484-489
Our plan was to calculate cohesive energy of competing structures and examine the situation.
Metal is often used in primary structures and are joined to polymers, which are employed in secondary structures.
[3] A process for controlling metal foam structure to obtain high strength (by B.S.S.
Ray, “Modification of the structure of multi-walled carbon nanotubes bychoice of catalyst and their electro-chemical behavior” Materials Chemistry and Physics, Vol. 120, (2010) 484-489
Online since: December 2011
Authors: Shu Hua Qi, Peng Cao, Sha Sha Li
Preparation and Thermal Properties of Novolac Resin/ graphite Nanosheet Composites
Peng Cao1, a, Shuhua Qi2, b and Shasha Li3, c
1, 2, 3Department of Applied Chemistry, School of science, Northwestern Polytechnical University, Xi’an, 710129, China
acaopeng3386@163.com, bqishuhua@nwpu.edu.cn, cfrostgirl82@126.com
Keywords: Novolac resin; Graphite nanosheet; Thermal conductivity; Composite
Abstract.
Scanning election microscopy was used to characterize the structure and dispersion of the graphite nanosheets and the composites.
The results showed that the structure of the nanosheets played an important role in forming thermal conducting network in the novolac resin matrix.
Introduction Polymer/nanosheet composites have attracted considerable recent attention because polymer micro- and nano-composites are characterized by a refined structure which, when properly ordered, can enable increased performance.
Results and discussion Structure of GICs, EG and NanoG.
Scanning election microscopy was used to characterize the structure and dispersion of the graphite nanosheets and the composites.
The results showed that the structure of the nanosheets played an important role in forming thermal conducting network in the novolac resin matrix.
Introduction Polymer/nanosheet composites have attracted considerable recent attention because polymer micro- and nano-composites are characterized by a refined structure which, when properly ordered, can enable increased performance.
Results and discussion Structure of GICs, EG and NanoG.
Online since: June 2008
Authors: Kin Tak Lau, Yong Qing Zhao, Hu Lin Li
Its structure and mechanical properties were investigated by using transmission electron
microscopy (TEM), scanning electron microscopy (SEM) and tensile property test.
This is presumably due to homogeneous dispersion of ND cluster, good interfacial bonding and unique ND bridge structures in the ND/PLA nanocomposites.
Apparently, the polymer matrix can be interlocked by these structures as pins, which may generate positive effect on the mechanical properties of PLA.
These improvements of mechanical properties of the PLA are ascribed to homogenous dispersion of ND, good interfacial bonding between ND and PLA matrix as well as the unique ND bridge structures.
Conclusions Due to homogeneous dispersion of ND nanoclusters, good interfacial bonding and the unique ND bridge structures, ND remarkably improved the mechanical properties of PLA with extremely low loading.
This is presumably due to homogeneous dispersion of ND cluster, good interfacial bonding and unique ND bridge structures in the ND/PLA nanocomposites.
Apparently, the polymer matrix can be interlocked by these structures as pins, which may generate positive effect on the mechanical properties of PLA.
These improvements of mechanical properties of the PLA are ascribed to homogenous dispersion of ND, good interfacial bonding between ND and PLA matrix as well as the unique ND bridge structures.
Conclusions Due to homogeneous dispersion of ND nanoclusters, good interfacial bonding and the unique ND bridge structures, ND remarkably improved the mechanical properties of PLA with extremely low loading.