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Online since: February 2014
Authors: Mufirah Cahya Fajrah Toana, Bambang Soegijono
Coverage ratio of the width of the B/C in the boron carbide is linked to the replacement of carbon atoms in the structure of boron carbide which has a single phase in the whole range.
The results were analyzed using the program package GSAS (General Sructure Analysis System), to determine the crystal structure of the phases formed.
Peikrishvili, Journal 0f Solid State Chemistry. 154 (2000) 194-198
The results were analyzed using the program package GSAS (General Sructure Analysis System), to determine the crystal structure of the phases formed.
Peikrishvili, Journal 0f Solid State Chemistry. 154 (2000) 194-198
Online since: March 2013
Authors: Zuraida Khusaimi, Mohamad Rusop, Saifollah Abdullah, N.A. Amir
All of these show that, ZnO have the largest family of nanostructures compared to other materials, both in structures and in properties.
Hexagonal structure on the nanorods can be clearly seen because growth of the hexagonal nanorod is almost complete.
[9] Liu, L., Jiao, L., Zhang, Y., Sun, J., Yang, L., Miao, Y., Yuan, H., Wang, Y., Materials Chemistry and Physics 111 (2008) 565-669.
Hexagonal structure on the nanorods can be clearly seen because growth of the hexagonal nanorod is almost complete.
[9] Liu, L., Jiao, L., Zhang, Y., Sun, J., Yang, L., Miao, Y., Yuan, H., Wang, Y., Materials Chemistry and Physics 111 (2008) 565-669.
Online since: January 2008
Authors: Han Seung Lee, Xiao Yong Wang, Ki Bong Park
Furthermore,
the early-age thermal crack of concrete structure can be a potential result.
Furthermore, the early-age thermal crack of concrete structure in construction site can be a potential result.
F.Tomosawa, Proceeding of 10th International Congress Chemistry Of Cement, 1997, Sweden [5].Tatsuhiko Saeki,Paulo J.M.
Furthermore, the early-age thermal crack of concrete structure in construction site can be a potential result.
F.Tomosawa, Proceeding of 10th International Congress Chemistry Of Cement, 1997, Sweden [5].Tatsuhiko Saeki,Paulo J.M.
Online since: July 2011
Authors: Han Ki Yoon, Won Jo Park, Hua Wei Rong, Cheol Hong Park
Network preform can bear the load during wear process, in addition the preform is multihole structure, and the metal matrix aluminum alloy infiltrated into preform easily under low pressure of manufacture procedure.
Cu Si Mg Fe Mn Ni Ti Cr Contents 0.99 12.2 1.05 0.38 0.12 1.02 0.06 0.04 Microstructural and hardness analysis In this study, microstructure of Ni-Cr/AC8A composites was observed by optical microscope (Olympus BX60M), the revealed structures were also studied through element analysis and quantitative analysis using XRD and EPMA.
[2] C.T.Liu, Recent advances in ordered intermetallics, Materials Chemistry and Physics 42(1995), pp.77–86
Cu Si Mg Fe Mn Ni Ti Cr Contents 0.99 12.2 1.05 0.38 0.12 1.02 0.06 0.04 Microstructural and hardness analysis In this study, microstructure of Ni-Cr/AC8A composites was observed by optical microscope (Olympus BX60M), the revealed structures were also studied through element analysis and quantitative analysis using XRD and EPMA.
[2] C.T.Liu, Recent advances in ordered intermetallics, Materials Chemistry and Physics 42(1995), pp.77–86
Online since: June 2012
Authors: Jian Feng Zhu, Lan Ye
Effect of TiC content on the microstructure and mechanical properties of Ti3AlC2/Al2O3 in situ composites synthesized by hot pressing
Lan Ye a and Jianfeng Zhu b
Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an 710021, China
alanye0508@163.com, bzhujf@sust.edu.cn
Keywords: Ti3AlC2; Al2O3; in-situ reaction; microstructure; mechanical properties
Abstract.
With decreasing TiC content in the starting powders, the amount of remaining TiC decreases obviously, and the laminated structure of matrix is well crystallized (Fig. 2(b)).
Combined with the XRD results, the decrease of hardness of the sample with 80% TiC content is attributed to the loose structure and the local agglomeration of TiC.
With decreasing TiC content in the starting powders, the amount of remaining TiC decreases obviously, and the laminated structure of matrix is well crystallized (Fig. 2(b)).
Combined with the XRD results, the decrease of hardness of the sample with 80% TiC content is attributed to the loose structure and the local agglomeration of TiC.
Online since: February 2014
Authors: Nan Qiao Zhou, Chul B. Park, Ming Yi Wang, Ru Min Zhu
However, the foaming process of PP is difficult to be controlled due to its linear structure induced inherent low melt strength[2], which makes the cell walls not strong enough to bear the extensional force during the cell growth process.
Hsu, Effects of silica particle size on the structure and properties of polypropylene/silica composites foams [J].
Journal of Industrial and Engineering Chemistry, 2013, 19(4): 1377-1383
Hsu, Effects of silica particle size on the structure and properties of polypropylene/silica composites foams [J].
Journal of Industrial and Engineering Chemistry, 2013, 19(4): 1377-1383
Online since: October 2020
Authors: Irina V. Gordeeva, Tatiana V. Dudareva, Irina A. Krasotkina, Vadim G. Nikol'skii, Victoria N. Gorbatova
Processing of crumb rubber by the method of high-temperature shear-induced grinding (HTSG) [2, 3] so rearranges the structure of rubber particles that they decay very quickly in hot bitumen and structure it at the micro and nanoscale.
Krasotkina, et cet., Development and Properties of New Nanomodifiers for Road Pavement, Russian Journal of Physical Chemistry B. 8 (2014) 577-583
Krasotkina, et cet., Development and Properties of New Nanomodifiers for Road Pavement, Russian Journal of Physical Chemistry B. 8 (2014) 577-583
Online since: August 2016
Authors: Xiu Ju Wang, Li Guo Wang, Zhong Peng Wang, Shu Fang Hou, Xin Lian Shi, Jian Hua Yang, Kai Li Zhou
Different nanomaterials such as titanium dioxide, zeolite, carbon nanotube and silica had been added to membrane structure for improving the properties of FO membrane such as pure water flux and anti-fouling[4-8].
And it has a slightly increase as the coagulation bath temperature increases from 80 ℃ to 90 ℃, this may be owing to the change of membrane structure caused by high temperature.
Acknowledge This work was financially supported by the National Science-Technology Support Plan Projects (2014BAK13B02), Shandong Science and Technology Development Plan (2012SGGX10220), National Natural Science Foundation of Shandong Province (ZR2011BL009, ZR2015BL021), Funds of Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Jinan Science and Technology Development Plan(201303066).
And it has a slightly increase as the coagulation bath temperature increases from 80 ℃ to 90 ℃, this may be owing to the change of membrane structure caused by high temperature.
Acknowledge This work was financially supported by the National Science-Technology Support Plan Projects (2014BAK13B02), Shandong Science and Technology Development Plan (2012SGGX10220), National Natural Science Foundation of Shandong Province (ZR2011BL009, ZR2015BL021), Funds of Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Jinan Science and Technology Development Plan(201303066).
Online since: March 2017
Authors: Saiful Izwan Abd Razak, Izzati Fatimah Wahab, Foong Choi Yee
Researchers are treasuring these nanotube clays because of their high surface area to volume ratio [1], low surface charge [2] and unique outer-inner surface chemistry (Fig 1) [3].
Figure 1 Structure of a halloysite nanotube [14] Presently, medical and pharmaceutical industries are searching for new biocompatible materials with desired mechanical properties.
This is contributed by the good interaction between the nanotubes with the crosslinked structure of the CR that leads to effective load transfer.
Figure 1 Structure of a halloysite nanotube [14] Presently, medical and pharmaceutical industries are searching for new biocompatible materials with desired mechanical properties.
This is contributed by the good interaction between the nanotubes with the crosslinked structure of the CR that leads to effective load transfer.
Online since: September 2013
Authors: Ji Ying Feng, Xing Huang, Shun Rong He, Shu Yi Qiu, Fu Li Li, Xin Ying Wu
Study on immobilization of tannase
Shunrong He1,2,a,Xinying Wu1,2,b ,Shuyi Qiu1,2,3,c .Xing Huang1,2,d,Fuli Li1,2,e
and Jiying Feng1,2,f
1Guizhou Province Key Laboratory of Fermentation Engineering and Biopharmacy,China
2School of Chemistry and Chemical Engineering, Guizhou University,Guiyang,China
3the corresponding author
a1154181754@qq.com, bwxy200611@yahoo.com.cn, csyqiu@gzu.edu.cn, d1255571587@qq.com,e1051562334@qq.com.f490532493@qq.com
Keywords: Tannase,Immobilization,Glutaraldehyde,Cross-linking.
Fig.2 Effect of the re cross-linking concentration of glutaraldehyde on the recovery rate Fig.1 Effect of the pre cross-linking concentration of glutaraldehyde on the recovery rate Effect of the cross-linking time on the recovery rate.For the pre cross-linking , the recovery rate reaches maximum at 2.0h, then decreased gradually,but for the re cross-linking,the maximum of the recovery rate was obtained at 1.0h.The complete of cross-linking was mainly influenced by the cross-linking time,but the structure of enzyme molecule was affected if the cross-linking time is long.This is observed in Fig.3.
Fig.3 Effect of the cross-linking time on the recovery rate Effect of the cross-linking temperature on the recovery rate.The cross-linking temperature plays a vital role in the process of immobilization,the covalent bond formated was affected by the temperature,at low temperature, the covalent bond was’t formated completely,but when the temperature was high, the enzyme active center was hided by the network frame structure which is formed,it was observed from Fig.4.
Fig.2 Effect of the re cross-linking concentration of glutaraldehyde on the recovery rate Fig.1 Effect of the pre cross-linking concentration of glutaraldehyde on the recovery rate Effect of the cross-linking time on the recovery rate.For the pre cross-linking , the recovery rate reaches maximum at 2.0h, then decreased gradually,but for the re cross-linking,the maximum of the recovery rate was obtained at 1.0h.The complete of cross-linking was mainly influenced by the cross-linking time,but the structure of enzyme molecule was affected if the cross-linking time is long.This is observed in Fig.3.
Fig.3 Effect of the cross-linking time on the recovery rate Effect of the cross-linking temperature on the recovery rate.The cross-linking temperature plays a vital role in the process of immobilization,the covalent bond formated was affected by the temperature,at low temperature, the covalent bond was’t formated completely,but when the temperature was high, the enzyme active center was hided by the network frame structure which is formed,it was observed from Fig.4.