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Online since: May 2011
Authors: Wen Jian Wu, Yuan Lin An, Zhi Ming Liu, Gan Wang
Role of Biopolymer in Nacre Heated in Nitrogen Atmosphere
Yuanlin Ana, Zhiming Liu, Gan Wang and Wenjian Wub
Department of Chemistry and Biology, College of Science, National University of Defense Technology, Changsha, Hunan 410073, China
aanyuanlin2005@yahoo.com.cn, bwjwu67@126.com
Keywords: Nacre; Biopolymer; Microstructure; Toughening mechanism; Phase transformation
Abstract.
Introduction Nacre, which has evolved through millions of years to a level of perfect structures and excellent properties is a composite containing 95vol.% interlocking aragonite platelets staggered in successive laminae and separated by 5vol.% protein-polysaccharide matrix[1].
Experimental Methods Fresh abalones were collected from market and kept in water to maintain their structures.
Juanhua: Materials Chemistry and Physics, Vol. 114 (2009), p.367
Introduction Nacre, which has evolved through millions of years to a level of perfect structures and excellent properties is a composite containing 95vol.% interlocking aragonite platelets staggered in successive laminae and separated by 5vol.% protein-polysaccharide matrix[1].
Experimental Methods Fresh abalones were collected from market and kept in water to maintain their structures.
Juanhua: Materials Chemistry and Physics, Vol. 114 (2009), p.367
Online since: August 2013
Authors: Guo Mei Jia, Fang Qing Chen, Lei Cao, Fu Yang Zeng
The effect of different flooding duration on soil organic carbon and its labile fraction in the riparian zone of Three Gorges Reservoir Area
Fuyang Zeng, Guomei Jia *, Fangqing Chen, Lei Cao
College of Chemistry & Life Science, Three Gorges University, Yichang 443002, China
*Corresponding author: Jia Guo Mei, email: jjjgm@126.com
Keywords: Soil organic Carbon; labile organic Carbon; riparian zone; Three Gorges Reservoir Area
Abstract.
Hydrology is a primary driving factor in the development of wetland soil [2], which controls such basic features as the creation of horizons and profile structure, especially, the accumulation of organic matter [3].
Rinklebe and Langer [12] thought that aerobic microorganisms had only a short period time for developing, resulting in lowest MBC due to pore space filled with water and soil structure more compact under long-term submerged sites.
Acknowledgements This work was financially supported by the scientific and technological innovations Foundation of Three Gorges University, China and Pre-Study Foundation of College of Chemistry & Life Science, Three Gorges University, China (HY1102).
Hydrology is a primary driving factor in the development of wetland soil [2], which controls such basic features as the creation of horizons and profile structure, especially, the accumulation of organic matter [3].
Rinklebe and Langer [12] thought that aerobic microorganisms had only a short period time for developing, resulting in lowest MBC due to pore space filled with water and soil structure more compact under long-term submerged sites.
Acknowledgements This work was financially supported by the scientific and technological innovations Foundation of Three Gorges University, China and Pre-Study Foundation of College of Chemistry & Life Science, Three Gorges University, China (HY1102).
Online since: February 2006
Authors: Minoru Takahashi, Masayoshi Fuji, Y. Tarutani, Yong Sheng Han
Some optically hollow shells have extensive applications in
the fields of optics, electronics, chemistry and coating system due to a large refractive index contrast
between core and shell materials [2,3].
After the gel particle was carefully detached from the capillary tube, it immediately floated on the surface of solution, as shown in Fig. 1b, which indicates some positive evidence of hollow structure due to its low density.
The microstructure of gel is porous, as shown in Fig. 2b, resembling the general structure of dried gel.
In light into how surface chemistry can influence crystal nucleation, a classical nucleation equation is considered to calculate the rate of steady state nucleation (I), as shown in the following [8].
After the gel particle was carefully detached from the capillary tube, it immediately floated on the surface of solution, as shown in Fig. 1b, which indicates some positive evidence of hollow structure due to its low density.
The microstructure of gel is porous, as shown in Fig. 2b, resembling the general structure of dried gel.
In light into how surface chemistry can influence crystal nucleation, a classical nucleation equation is considered to calculate the rate of steady state nucleation (I), as shown in the following [8].
Online since: July 2016
Authors: Fu Shi Zhang, Rui Fu, Ting Zhang, Jun Hui Xiang, Hua Zheng Sai, Li Xing, Zhen You Li
On the micro level, a web-like structure of BCAs consists of disorderly and dispersive nanometer-sized cellulose nanofibers as presented in Figure 1.
After reinforcement, although the web-like structure was fully retained, the mean diameter of the nanofibers of all the samples presented great differences.
Increment with amounts of microcrystalline cellulose in initial solution, more crossing points had been formed in web-like structure.
Crystallographically, bacterial cellulose represents the cellulose-I structure.
He, et al., Journal of Materials Chemistry B. 2 (2014) 7559-7566
After reinforcement, although the web-like structure was fully retained, the mean diameter of the nanofibers of all the samples presented great differences.
Increment with amounts of microcrystalline cellulose in initial solution, more crossing points had been formed in web-like structure.
Crystallographically, bacterial cellulose represents the cellulose-I structure.
He, et al., Journal of Materials Chemistry B. 2 (2014) 7559-7566
Online since: July 2015
Authors: D.A. Morton-Blake
Its structure was slightly modified from the synthesized molecule for the purpose of enhancing its ion specificity as will be discussed in the next section.
Hammes, ‘Physical chemistry for the biological sciences’, Wiley-Interscience, Hoboken, New Jersey 2007, Chapter 3
Sander, Dictionary of protein secondary structure: pattern recognition of hydrogen-bonded and geometrical features, Biopolymers. 22 (1983) 2577-2637
Snyder, Calculation of ionic diffusion coefficients on the basis of migration test results, Materials and Structures 36 (2003) 156-165
Atkins, J. de Paula, Physical Chemistry, eighth edition, Oxford University Press, Oxford 2006 , Chapter 21
Hammes, ‘Physical chemistry for the biological sciences’, Wiley-Interscience, Hoboken, New Jersey 2007, Chapter 3
Sander, Dictionary of protein secondary structure: pattern recognition of hydrogen-bonded and geometrical features, Biopolymers. 22 (1983) 2577-2637
Snyder, Calculation of ionic diffusion coefficients on the basis of migration test results, Materials and Structures 36 (2003) 156-165
Atkins, J. de Paula, Physical Chemistry, eighth edition, Oxford University Press, Oxford 2006 , Chapter 21
Online since: August 2011
Authors: Xin Wang, Qiang Liu, Fei Fei Zhang, Rui Kang, Jun Shao Zhu
The monoclinic structure of LaPO4 phase generated as the temperature increases.
The analysis of the fluorescence spectra shows that the luminous intensity of the monoclinic structure of LaPO4:Eu3+ is stronger than the hexagonal structure.
The result shows that the part hexagonal structure transformed into the monoclinic structure of the LaPO4 in P21/n(14) space group (JCPDS file 32-0493).
It said that all the hexagonal structure disappeared and transformed into the monoclinic structure of the LaPO4 in P21/n (14) space group.
The hexagonal structure of the LaOP4:Eu3+ can be transformed into the monoclinic structure at 200°C by hydrothermal method, which has an well-organized crystal structure.
The analysis of the fluorescence spectra shows that the luminous intensity of the monoclinic structure of LaPO4:Eu3+ is stronger than the hexagonal structure.
The result shows that the part hexagonal structure transformed into the monoclinic structure of the LaPO4 in P21/n(14) space group (JCPDS file 32-0493).
It said that all the hexagonal structure disappeared and transformed into the monoclinic structure of the LaPO4 in P21/n (14) space group.
The hexagonal structure of the LaOP4:Eu3+ can be transformed into the monoclinic structure at 200°C by hydrothermal method, which has an well-organized crystal structure.
Online since: February 2025
Authors: Yuliana Hapon, Yana Zmaha, Maryna Chyrkina-Kharlamovа, Dmytro Tregubov
We propose to consider peroxide structures not only as intermediates in the flame, but as primary supramolecular structures and the combustion initiation first elementary act.
This requires a clusters longer length, therefore, a hexameric structure was used to model tmp, tai, and γ of methane, and a trimeric structure was used for ethane.
House, Inorganic Chemistry, California, Elsevier, 2010
Zhao, Size-dependent melting point of noble metals, Materials Chemistry and Physics, 82(1) (2003) 225–227
[35] Search for Species Data by Chemical Name, NIST Chemistry WebBook, U.S.
This requires a clusters longer length, therefore, a hexameric structure was used to model tmp, tai, and γ of methane, and a trimeric structure was used for ethane.
House, Inorganic Chemistry, California, Elsevier, 2010
Zhao, Size-dependent melting point of noble metals, Materials Chemistry and Physics, 82(1) (2003) 225–227
[35] Search for Species Data by Chemical Name, NIST Chemistry WebBook, U.S.
Online since: May 2018
Authors: Bin Deng, Chong Song Zhou, Hui Liu, Jun Chen
Preparation and Investigation of Tm3+-Doped
Li3Gd3Te2O12 Blue-Emitting Phosphor
Bin Deng1,2,a*, Chong-song Zhou1,2,b, Hui Liu1,2,c and Jun Chen1,2,d
1College of Chemistry & Biology and Environmental Engineering, Xiangnan University, Chenzhou 423043, Hunan, P.
This study is dedicated to the structure and the photoluminescence properties of Li3Gd3Te2O12:Tm3+ phosphor.
Fig. 2 Crystal structure of the Li3Gd3Te2O12 host.
Fig. 2 presents a schematic of the Li3Gd3Te2O12 crystal structure belonging to the monoclinic structure with space group of Iad (No.230).
Banks, The crystal chemistry of some germanium garnets, J.
This study is dedicated to the structure and the photoluminescence properties of Li3Gd3Te2O12:Tm3+ phosphor.
Fig. 2 Crystal structure of the Li3Gd3Te2O12 host.
Fig. 2 presents a schematic of the Li3Gd3Te2O12 crystal structure belonging to the monoclinic structure with space group of Iad (No.230).
Banks, The crystal chemistry of some germanium garnets, J.
Online since: February 2018
Authors: Yi Yu Wang, Jun Hua Zhang, Kai Yuan, Zhong He Shui
The structure of cement slurry is densed for C-S-H gel structure generated [11].
Structure Analysis.
It can be found that the structure is obviously loose.
The structure of OPC is discontinuous porous.
Page, Aspects of the pore solution chemistry of hydrated cement pastes containing MK, J.
Structure Analysis.
It can be found that the structure is obviously loose.
The structure of OPC is discontinuous porous.
Page, Aspects of the pore solution chemistry of hydrated cement pastes containing MK, J.
Online since: August 2011
Authors: Yan Ling Bao, Guang Ze Dai, Xing Min Huang, Jing Han, Jun Wen Zhao
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.
Results and Discussions X-ray photoelectron spectroscopy is a unique and valid technique for obtaining detailed atomic elemental and molecular structures information from carbon fiber surface [18].
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
Results and Discussions X-ray photoelectron spectroscopy is a unique and valid technique for obtaining detailed atomic elemental and molecular structures information from carbon fiber surface [18].
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