Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: February 2013
Authors: Zhen Nan Zhu, Yun Jun Yan, Hou Jin Zhang, Li Xu
Efficient production of biodiesel from rapeseed oil deodorizer distillate: One-pot esterification and transesterfication with compound lipases
Zhennan Zhu1, a, Li Xu1, b, Houjin Zhang1,c, Yunjun Yan1,d
1Key Laboratory of Molecular Biophysics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, China
azhennan_zhu@126.com,bxuli1881@yahoo.cn,chjzhang@mail.hust.edu.cn
dCorresponding author.
Materials and methods Materials Rapeseed oil deodorizer distillate was donated by Yuanda Chemical Co.
Journal Vol. 56 (2010), p. 1659 [29] T.
Materials and methods Materials Rapeseed oil deodorizer distillate was donated by Yuanda Chemical Co.
Journal Vol. 56 (2010), p. 1659 [29] T.
Online since: March 2010
Authors: Yan Mei Meng, Zhen Dong, Fu Ning Lu, Kai Xu, Shang Ping Li
Large-scale finite element
analysis software is used to analyze different angle spiral installation; in order to obtain logical
results, it is necessary to analyze its non-linear action, which includes non-linear caused by state
change, material and geometry.
There are problems of big strain and contact in computing process, so material characteristic should be input according to actual stress strain relationship (see Fig.3).
Acknowledgements This research is supported by Guangxi Natural Science Foundation (No. 0778006-13).
(in Chinese) [6] S.P.Li, Y.M.Meng et al: Journal of Materials Processing Technology.
There are problems of big strain and contact in computing process, so material characteristic should be input according to actual stress strain relationship (see Fig.3).
Acknowledgements This research is supported by Guangxi Natural Science Foundation (No. 0778006-13).
(in Chinese) [6] S.P.Li, Y.M.Meng et al: Journal of Materials Processing Technology.
Online since: August 2013
Authors: Jian Yong Shi, Xiang Juan Yu, Ying Bo Ai
Some types of composite geosynthetics that have special functions are used in hydraulic filling project, and geonet composites having a drainage function have been adopted as materials to protect geomembranes[3].
However, in some projects, marble stones with diameters over 50 mm, used as drainage materials, will cause soil particle to occur in geonet composites.
Acknowledgements The writers appreciate the financial support provided by National Natural Science Foundation of China (No. 41172234).
[3] PENG Jie, SU Bo, DONG Jiang-ping, WANG Baihuan, Application of vacuum preloading method with double-layer filter pipe in non- sand-mat layer to ultra-soft seabed silt hydraulic filling, Journal of Hohai University, 2011, 39(6), 676-681 [4] Han Yong Jeo, Seong Hun Kim, Youn In Chung, Yeong Mog Park, Chin Gyo Chung, Analysis of the drainage performance of geotextile composites under confined loads, Polymer Testing 2004,23(2), 239–244
However, in some projects, marble stones with diameters over 50 mm, used as drainage materials, will cause soil particle to occur in geonet composites.
Acknowledgements The writers appreciate the financial support provided by National Natural Science Foundation of China (No. 41172234).
[3] PENG Jie, SU Bo, DONG Jiang-ping, WANG Baihuan, Application of vacuum preloading method with double-layer filter pipe in non- sand-mat layer to ultra-soft seabed silt hydraulic filling, Journal of Hohai University, 2011, 39(6), 676-681 [4] Han Yong Jeo, Seong Hun Kim, Youn In Chung, Yeong Mog Park, Chin Gyo Chung, Analysis of the drainage performance of geotextile composites under confined loads, Polymer Testing 2004,23(2), 239–244
Online since: March 2009
Authors: Guido Roma, Ting Liao
Stability of Neutral Silicon Interstitials in 3C- and 4H-SiC:
A First-Principles Study
Ting Liao
1,2,3,a
and Guido Roma3,b
1
High-performance Ceramic Division, Shenyang National Laboratory for Materials Science, Institute
of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
2
Graduate School of Chinese Academy of Sciences, Beijing, 100039, China
3
Service de Recherches de Métallurgie Physique, CEA Saclay, 91191 Gif sur Yvette, France
a
tliao@imr.ac.cn, bguido.roma@cea.fr
Keywords: Defects, diffusion, first principles calculations, semiconductors
Abstract.
Defect energies calculated from DFT are expected to be quite accurate, nevertheless in several cases it has been shown that a higher level of theory than for the description of the bulk material is necessary [13, 14].
The fact that k-point sampling of the BZ has to be carefully considered comes from two reasons: first, the screening in the bulk material has to be correctly described; second, the defect levels themselves can show a dispersion with k.
Hopkins , Silicon Carbide and Graphite Materials for Fusion Reactors.
Colombo: Journal Nucl.
Defect energies calculated from DFT are expected to be quite accurate, nevertheless in several cases it has been shown that a higher level of theory than for the description of the bulk material is necessary [13, 14].
The fact that k-point sampling of the BZ has to be carefully considered comes from two reasons: first, the screening in the bulk material has to be correctly described; second, the defect levels themselves can show a dispersion with k.
Hopkins , Silicon Carbide and Graphite Materials for Fusion Reactors.
Colombo: Journal Nucl.
Online since: December 2010
Authors: Quan Min Peng, Wen Liang Liu, Li Feng Feng, Tie Cheng Wang
The materials were come from the engineering construction site.
Li: ACI Materials Journal.
Asghar Bhatti: Construction and Building Materials.
Wang: Construction and Building Materials.
El-Bisy: Construction and Building Materials.
Li: ACI Materials Journal.
Asghar Bhatti: Construction and Building Materials.
Wang: Construction and Building Materials.
El-Bisy: Construction and Building Materials.
Online since: March 2006
Authors: András Roósz, Lorenz Ratke, Georg Müller, Jacques Lacaze, A. Weiß, M.D. Dupouy, Gerhard Zimmermann, G.U. Grün, Sonja Steinbach, Marc Hainke, Yves Fautrelle, R. Valdes, H.-P. Nicolai, H. Gerke-Cantow, Hermann-Josef Diepers
The goal is to define process parameters,
select proper construction materials and to provide inputs, i.e., boundary conditions, for micromodeling
and phase field simulations.
The model is based on the CAD drawing of thefurnace, the materials parameters and the thermophysical properties of AlSi6 [20].
Winsa, in: Materials and Fluids under Low Gravity, Lecture Notes in Physics, Eds.
Bolcato, Journal of Crystal Growth, 183 (1998)690- 704 [19] J.D.
On Electromagnetic Processing of Materials, EPM2003, 2003
The model is based on the CAD drawing of thefurnace, the materials parameters and the thermophysical properties of AlSi6 [20].
Winsa, in: Materials and Fluids under Low Gravity, Lecture Notes in Physics, Eds.
Bolcato, Journal of Crystal Growth, 183 (1998)690- 704 [19] J.D.
On Electromagnetic Processing of Materials, EPM2003, 2003
Online since: August 2021
Authors: Peng Peng Wang, Zhen Zhong Zhang, Bo Rui Yang, Fang Xia Zhao
Study on the Tribological Mechanism of Ultrafine SiO2/MoS2 Powders
in Complex Calcium Sulfonate Grease
Borui Yang1,a, Fangxia Zhao2,b*, PengPeng Wang3,c, Zhenzhong Zhang4,d
1-4Nanjing Tech University, China
(College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China)
a1246549485@qq.com, bfangxiazhao@126.com, c735281952@qq.com, dnjutzhangzz@126.com
Corresponding author: Fangxia Zhao, Affiliation: Nanjing Tech University,
E-mail Address: fangxiazhao@126.com
Keywords: nano-SiO2; ultrafine MoS2; commercial NLGI Grade No.2 complex calcium sulfonate grease; microstructure of wear spot; tribological mechanism
Abstract.
Introduction The development and promotion of nanomaterials has gained more attention from researchers all over the world due to its multiple characteristics of inorganic and organic materials [1~6].
Ultrafine MoS2 powder is a layered material with a three-sided polyhedral structure [10], which is easy to enter the friction surface [11].
Experimental Materials Commercial NLGI Grade No.2 complex calcium sulfonate grease(here we called base grease)was produced by Total Oil Co., Ltd; The average primary particle diameter 15nm of nano-SiO2 and 1μm of MoS2 powders, were all obtained from (China) Nanjing Haitai Nano Materials Co., Ltd.
Journal of Nanjing Normal University (Natural Science Edition). 34, 7-12(2011)
Introduction The development and promotion of nanomaterials has gained more attention from researchers all over the world due to its multiple characteristics of inorganic and organic materials [1~6].
Ultrafine MoS2 powder is a layered material with a three-sided polyhedral structure [10], which is easy to enter the friction surface [11].
Experimental Materials Commercial NLGI Grade No.2 complex calcium sulfonate grease(here we called base grease)was produced by Total Oil Co., Ltd; The average primary particle diameter 15nm of nano-SiO2 and 1μm of MoS2 powders, were all obtained from (China) Nanjing Haitai Nano Materials Co., Ltd.
Journal of Nanjing Normal University (Natural Science Edition). 34, 7-12(2011)
Online since: January 2016
Authors: Omar B. Yaakob, M. Rajali Jalal, Yasser M. Ahmed, A.A. Faizul, Koh K. Koh, Tarmizi J. Zaid
ARs are usually made of non-natural materials such as concrete, wood, plastic, steel and many other materials [7].
Currently, concrete is most the commonly employed ingredient for constructing ARs; it has also been used in combination with other reef materials such as steel, plastic, tires [8].
Besides that, ARs can be constructed from natural stones and rocks, where the latter are constructed with combination of wide-ranging materials including canvas, anchor blocks, and others.
John, “Coral recruitment and early benthic community development on several materials used in the construction of artificial reefs and breakwaters”, J.
Zhang, et al., “Validation and comparison between wind tunnel experiments and numerical simulation of flow field around artificial reefs”, Journal of Fishery Sciences of China, 16 (2009) 365-371
Currently, concrete is most the commonly employed ingredient for constructing ARs; it has also been used in combination with other reef materials such as steel, plastic, tires [8].
Besides that, ARs can be constructed from natural stones and rocks, where the latter are constructed with combination of wide-ranging materials including canvas, anchor blocks, and others.
John, “Coral recruitment and early benthic community development on several materials used in the construction of artificial reefs and breakwaters”, J.
Zhang, et al., “Validation and comparison between wind tunnel experiments and numerical simulation of flow field around artificial reefs”, Journal of Fishery Sciences of China, 16 (2009) 365-371
Online since: May 2011
Authors: Min Zhou, Jin Lu Jia, Jian Hua Zheng
School of Civil and Environment Engineering, University of Science and Technology Beijing, Beijing 100083
2.Comprehensive Survey of Building Research & Design Institute Co., Ltd, Beijing 100007;
3.
The calculation step is that: If the pile material is elastic, calculation of reinforcement axial force at each section of pile based on Eq.1: (1) Wherein: K is calibration factor (kN/Hz2); Fi is steel string vibration frequency of i section at a load effect (Hz); F0 initial value of frequency (Hz); B is correction value of calculation.
China Academic Journal Electronic Pbulishing House, 2004, 34(12): 8-10 (In Chinese)
Chinese Journal of Geotechnical Engineering, 2006,28(1): 113-117 (In Chinese)
The calculation step is that: If the pile material is elastic, calculation of reinforcement axial force at each section of pile based on Eq.1: (1) Wherein: K is calibration factor (kN/Hz2); Fi is steel string vibration frequency of i section at a load effect (Hz); F0 initial value of frequency (Hz); B is correction value of calculation.
China Academic Journal Electronic Pbulishing House, 2004, 34(12): 8-10 (In Chinese)
Chinese Journal of Geotechnical Engineering, 2006,28(1): 113-117 (In Chinese)
Online since: February 2012
Authors: Xiao Jing Li
Bring economic development by recovering culture to realize the perfect unification of material civilization and spiritual civilization, therefore becoming an important part during the development of minority sports resources.
References [1] Zhang Xuanhui, Guo Yongdong etc, Research on the Development of Southwest Ethnic Minority Traditional Sports, Journal of Chengdu Sport University(2005) [2] Lu Pingsheng, Pan Jian, Studay on Social Values for Developing Sport Resources in Northwestern Regions, Journal of Wuhan Institute of Physical Education(2006) [3] Wang Weiping, Zhang Liankai etc, Research on the Development of Southwest Ethnic Minority Traditional Sports, Sports Culture Guide(2008) [4] Rao Yuan, Zhang Yungang, Discussion on Character and Enlightenment of National Minority Sports Policy in China, China Sport Science(2007)
References [1] Zhang Xuanhui, Guo Yongdong etc, Research on the Development of Southwest Ethnic Minority Traditional Sports, Journal of Chengdu Sport University(2005) [2] Lu Pingsheng, Pan Jian, Studay on Social Values for Developing Sport Resources in Northwestern Regions, Journal of Wuhan Institute of Physical Education(2006) [3] Wang Weiping, Zhang Liankai etc, Research on the Development of Southwest Ethnic Minority Traditional Sports, Sports Culture Guide(2008) [4] Rao Yuan, Zhang Yungang, Discussion on Character and Enlightenment of National Minority Sports Policy in China, China Sport Science(2007)