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Online since: August 2010
Authors: Min Wang, Qiong Liu, Dong Zhang
Synthesis and Photocatalytic Property of BiVO4/ FeVO4
Composite Novel Photocatalyst
Min Wang
a
, Qiong Liu
b , Dong ZHANG c
College of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang
110165, China
a
minwang62@msn.com,
b
chanerwang @tom.com, czhangdong1186@sina.com
Key words: Semiconductors; FeVO4; Composite Photocatalyst;Methyl Orange
Abstract: BiVO4/FeVO4 composite photocatalyst samples were prepared by calcining the mixture of
FeVO4 and BiVO4 precusor which were prepared through liquid phase precipitation method for
further increasing the photocatalytic efficiency of FeVO4.
TiO2 has been a fascinating material because of its various potential applications, such as photocatalysis[3,4].
TiO2 has been a fascinating material because of its various potential applications, such as photocatalysis[3,4].
Online since: May 2005
Authors: Masataka Satoh, Tomoyuki Suzuki, Kuniaki Miura, Fumio Watanabe, Masami Shibagaki, Yasumi Kurematsu, Shigetaka Haga
., LTD, 3333-23 Kami-Tezuna, Takahagi, Ibaraki 318-0004, Japan
3
Research Center of Ion Beam Technology and College of Engineering, Hosei University, 3-7-2
Kajino-cho, Koganei, Tokyo 184-8584, Japan
a
sibagakim@mha.anelva.jp, bkurematsuy@mha.anelva.jp, cwatanabe@vaclab.co.jp,
dhaga@net-sukegawa.com, emiura@net-sukegawa.com, fc00d3070@k.hosei.ac.jp,
gmah@ionbeam.hosei.ac.jp
Keywords: Electron Bombardment Anneal System (EBAS), SiC, Post Ion Implantation Anneal,
Vacuum, Rapid Thermal Process (RTP), Surface Morphology
Abstract We develop the rapid thermal anneal system of the implanted SiC, Electron Bombardment
Anneal System (EBAS), which is able to heat up to 1900 oC with a rate of 320 oC/min in vacuum.
Introduction Silicon carbide (SiC) is the most promising material for the next generation power electronics devices [1].
In particular, post ion implantation annealing technology is one of key technologies to realise the SiC devices.
Introduction Silicon carbide (SiC) is the most promising material for the next generation power electronics devices [1].
In particular, post ion implantation annealing technology is one of key technologies to realise the SiC devices.
Online since: November 2012
Authors: Kai Yao, Zhen Ning Hu
Development and Design on the Rubber Conversion Track Wheel
Zhenning Hu1aand Kai Yao 1b
1 Xi’an Architecture Engineering Research Institution, China
a987198080@qq.com,bYaokai029@sohu.com
Keywords: The rubber conversion track wheel; Design principle; Development trend; Technical form
Abstract: The article has analyzed the the rubber conversion track wheel development present situation and application, summarized the track wheel trend of development, through the improvement overall construction form, promotion bearing power, expands in the great tonnage wheeled vehicle application scope; Studies the track wheel the general structural style, enhances the track wheel technology form the versatility; The improvement designs the track wheel the absorption of shock organization and prevent overturn equipment, enhances the track wheel operation comfortableness and the security.Through analyzes the track wheel the basic composition and bed the frame support form, the drive form, the absorption
The elimination inspires the source is reduces the vibration and the noise reduction effective method, the rubber track vibration and the pitch, the runner disposition, the center-of-gravity position, the sizing material performance and the pattern block configuration concerns.
Prevent overturn the equipment design is the rubber conversion track one of in wheel design key technologies.prevent overturn equipment mainly uses for to prevent vehicles in Canada, deceleration or when rugged location travel the track wheel circles the drive shaft whole to have the rotation.
The elimination inspires the source is reduces the vibration and the noise reduction effective method, the rubber track vibration and the pitch, the runner disposition, the center-of-gravity position, the sizing material performance and the pattern block configuration concerns.
Prevent overturn the equipment design is the rubber conversion track one of in wheel design key technologies.prevent overturn equipment mainly uses for to prevent vehicles in Canada, deceleration or when rugged location travel the track wheel circles the drive shaft whole to have the rotation.
Online since: December 2011
Authors: Xi Jian Zheng, Zhen Lu, Xiang Yun Zhao, Xing Liang Gao
Modal Analysis of Temporarily Installed Suspended Access Equipment Based on ANSYS
Xijian Zheng1,a, Zhen Lu1,b, Xiangyun Zhao1,c, Xingliang Gao1,d
1School of transportation & Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China
axijianzheng@sina.com, bluzhen1983@126.com, czhaoxiangyun6@126.com,dxinglianggao@163.com
Keywords: Temporarily Installed Suspended Access Equipment, structure modal analysis theory, FEM, natural frequency
Abstract.
The structure modal is conditioned by the its own characteristics of the structure and material, and is not related to the external loads.
Acknowledgements The research in this paper has been supported by National "Eleventh Five-Year" Key Scientific and Technological Plan, 2008BAJ09B02-2.Shenyang science and technology projects, F11-030-2-00.
The structure modal is conditioned by the its own characteristics of the structure and material, and is not related to the external loads.
Acknowledgements The research in this paper has been supported by National "Eleventh Five-Year" Key Scientific and Technological Plan, 2008BAJ09B02-2.Shenyang science and technology projects, F11-030-2-00.
Online since: September 2011
Authors: Li Gen Sun, Jia Quan Zhang, Hui Rong Li
Research on Hot State of Mould Copper Plate with High Casting Speed
Sun Ligen1, a, Li Huirong1, b, Zhang Jiaquan2,c
1School of Metallurgical and Energy, HEUU, Tangshan 063009, China
2 School of Metallurgical and Ecological Engineering, USTB, Beijing 100083, China
asunligen@heuu.edu.cn, blihuirong@heuu.edu.cn, cjqzhang@ustb.edu.cn
Keywords: mould copper plate; high casting speed; thermal state; equivalent strain field
Abstract:High casting speed has a great influence to thermal state and strain/stress field of the mould copper plate.
Introduction Casting speed is one of the key technical parameters for continuous casting.
The major assumptions are as follows: 1) Casting speed and Casting temperature are constant value; 2) Casting speed with neglected thermal conduction in casting direction; 3) Small deformation of the mould plates and steel shell with only material nonlinearity; 4) The influence of the thermal convection of the molten steel at the solidifying front is described by equivalent thermal conductivities according to the local temperature; 5) Thermo-elastic-plastic model is adopted for the steel shell, and the thermo-elastic model is used for the copper plates.
Introduction Casting speed is one of the key technical parameters for continuous casting.
The major assumptions are as follows: 1) Casting speed and Casting temperature are constant value; 2) Casting speed with neglected thermal conduction in casting direction; 3) Small deformation of the mould plates and steel shell with only material nonlinearity; 4) The influence of the thermal convection of the molten steel at the solidifying front is described by equivalent thermal conductivities according to the local temperature; 5) Thermo-elastic-plastic model is adopted for the steel shell, and the thermo-elastic model is used for the copper plates.
Online since: November 2012
Authors: Shang Fu Hao, Zhi Hui Wang, Yuan Qiang Wang, Bai Li Sun
The Researching on Evaluation Analysis Model about Student's Study Quality Based on Web
Yuanqiang Wang 1, a, Shangfu Hao 1,b , Zhihui Wang 1,c and Baili Sun 1,c
1 School of Information Science and Engineering
Hebei North University,
Hebei, Zhangjiakou 075000, P.R.China.
And in the process of communication, with ETL mode in data mining, all kinds of resources such as student information resources, teaching material resources, learning evaluation resources, data parameter fixed resources and the learning behavior resources were been integrated according to the certain strategy, with the order of providing some support and description from different view for student’s learning quality evaluation on web.
DB_Kp(kp_id, kp_name,kp_kw,kp_sec,kp_chap) In the structure of DB_Kp,the means of these fields followed by id of atom KP, name of KP, key words of KP, belong to which section and belong to which chapter.
And in the process of communication, with ETL mode in data mining, all kinds of resources such as student information resources, teaching material resources, learning evaluation resources, data parameter fixed resources and the learning behavior resources were been integrated according to the certain strategy, with the order of providing some support and description from different view for student’s learning quality evaluation on web.
DB_Kp(kp_id, kp_name,kp_kw,kp_sec,kp_chap) In the structure of DB_Kp,the means of these fields followed by id of atom KP, name of KP, key words of KP, belong to which section and belong to which chapter.
Online since: December 2013
Authors: Yan Dong Liu, Guo Xing Wang, Wei He
Stress Analysis and Strength Checking
for High Pressure Gas Pipeline in the Earthquake Rupture Area
Wei He 1, a Yandong Liu2, b and Guoxing Wang 3, c
1 146 He Ping Road, Lang Fang City, He Bei Province, China
2 48 Jian She Road, Lang Fang City, He Bei Province, China
3159 Guang Yang Road, Lang Fang City, He Bei Province, China
a hew202309@126.com ,b Liuyd@cnpc.com.cn, c Wanggx@cnpc.com.cn
Key words: High Pressure Gas Pipeline, Finite Element, Earthquake Rupture Area, Stress Analysis, Strength Checking
Abstract: Based on the actual project example of high pressure gas pipeline crossing earthquake rupture area, the paper shows and explains the way to make stress analysis and strength checking calculation for the high pressure gas pipeline in the earthquake rupture area by the method of finite element.
1 Introduction
Trunk gas pipeline use X70 LSAW steel pipe material and diameter of 711mm for the main line.
References [1] Ministry of Metallurgical Industry Construction Research Institute: Underground pipeline seismic calculation methods and engineering applications (2004) [2] YAPatel, Senior Analyst: Piping design in earthquake zone (1975)
References [1] Ministry of Metallurgical Industry Construction Research Institute: Underground pipeline seismic calculation methods and engineering applications (2004) [2] YAPatel, Senior Analyst: Piping design in earthquake zone (1975)
Online since: January 2013
Authors: Jian Jun Sun, Li Hong Cui, Mi Hao, Long Wang
Research on the Synthesis Process of Ethylmaltol by Electrochemistry
Jian-Jun Sun1, a, Mi Hao1, b, Long Wang1, c, Li-Hong Cui2, d
1College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
2Department of Mathematics and Computer Science, Beijing University of Chemical Technology, Beijing 100029, China
asunjj@mail.buct.edu.cn, b2010000060@grad.buct.edu.cn, c2011210022@grad.buct.edu.cn
dCorresponding author: lhongcui@163.com
Keywords: Ethylmaltol, Electrochemistry synthesis, Flavor enhancer.
Sigeru Torii et al presented an efficient synthesis of ethylmaltol employ ethylfurfuryl alcohol as a starting material by five steps[10].
The preparation of the key intermediate 1 from ethylfurfuryl alcohol was carried out by electrochemical oxidation and the resulting compound 1 was treated with perchloric acid to give hemiacetal 2, which refluxed with methyl orthoformate in the presence of magnesium sulfate to produce intermediate 3. 2-ethyl-4, 5-epoxy-6-methoxy-4H-pyran-3- one 4 was obtained by epoxidation of 3 treated with hydrogen peroxide in diethyl ether and aqueous sodium carbonate.
Sigeru Torii et al presented an efficient synthesis of ethylmaltol employ ethylfurfuryl alcohol as a starting material by five steps[10].
The preparation of the key intermediate 1 from ethylfurfuryl alcohol was carried out by electrochemical oxidation and the resulting compound 1 was treated with perchloric acid to give hemiacetal 2, which refluxed with methyl orthoformate in the presence of magnesium sulfate to produce intermediate 3. 2-ethyl-4, 5-epoxy-6-methoxy-4H-pyran-3- one 4 was obtained by epoxidation of 3 treated with hydrogen peroxide in diethyl ether and aqueous sodium carbonate.
Online since: October 2010
Authors: Ying Qiang Xu, Qiong Wei Zhang, Lei Lei Wang, Shao Jie Jin
The research on pressure distribution was mainly focused on the
two-dimensional model theory calculation, which ignored the material performance, external
environment and load function[3,4].
The key reason of brake performance failure is that the radius of lining, internal diameter of brake drum and the position of support pin axis don't meet the conditions of entire contact, due to processing, assembling and abrasion during using, etc.
Gao:Equipment Management and Maintenance (2008) [7] S.Jin, Y.Xu and F.Lin:Automotive Engineering (2010)
The key reason of brake performance failure is that the radius of lining, internal diameter of brake drum and the position of support pin axis don't meet the conditions of entire contact, due to processing, assembling and abrasion during using, etc.
Gao:Equipment Management and Maintenance (2008) [7] S.Jin, Y.Xu and F.Lin:Automotive Engineering (2010)
Online since: July 2011
Authors: Didier Fasquelle, M. Mascot, J.C. Carru
The optimized annealing conditions (950°C for 15 min) give the following results: εr = 780 and tgδ = 0.01 at 100 kHz, Pr = 13 µC/cm², Ec = 63 kV/cm and a tunability of 55%.
1 Introduction
Piezoelectric actuators, infrared sensors, FeRAM usually contain lead based materials [1-2].
Among these materials, PbZrTiO3 (PZT) is the most used thanks to its superior piezoelectric performances.
Accordingly, it is now necessary to implement materials without prohibited substances.
[5] Alexandru H.V, Berbecaru C, Ioachim A,Banciu M.G, Toacsen M.I, Nedelcu L, Ghetu D, Stoica G, Materials Science and Engineering B118 (2005) 92-96
Zhu, Microelectronic Engineering 66 (2003) 738-744
Among these materials, PbZrTiO3 (PZT) is the most used thanks to its superior piezoelectric performances.
Accordingly, it is now necessary to implement materials without prohibited substances.
[5] Alexandru H.V, Berbecaru C, Ioachim A,Banciu M.G, Toacsen M.I, Nedelcu L, Ghetu D, Stoica G, Materials Science and Engineering B118 (2005) 92-96
Zhu, Microelectronic Engineering 66 (2003) 738-744