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Online since: September 2014
Authors: Yong Jie Wang, Shi Yao Zhu, Geng Qiang Zhang
Selective Esterification of Ethylene Glycol Ethyl Ether Over Silica-cerous
Yongjie Wang, Shiyao Zhu, Gengqiang Zhang
Liaoyang Campus, Shenyang University of Technology
School of Petrochemical Engineering, Liaoyang 111003, China
332177271@qq.com
Key words: ethylene glycol ethyl ether; silica-cerous; selective esterification; acetic acid
Abstract.
Obviously, after the qualitative analysis, and compare it with the original spectra, we determine the material is ethylene glycol ethyl ether acetate.
Obviously, after the qualitative analysis, and compare it with the original spectra, we determine the material is ethylene glycol ethyl ether acetate.
Online since: January 2012
Authors: Peng Wu, Wei Li, Jia Wu
A Numerical Study on the Temperature Field of Oscillatory Flow Reactor with Conic Ring Baffles
Peng Wu1* , Jia Wu1* Wei Li2
1Department of Chemical and Biological Engineering Zhejiang University, Hangzhou, 310027, China
2Hangzhou ZJU Holly Technology Corporation Limited Room 626, A-West Building, ZJU Science Park
wujia@zju.edu.cn, zjuyq_lw1001@163.com
*Corresponding author.
In many industry processes, it’s a key factor of excellent heat transfer performance.
Liao, "Effects of mixing, seeding, material of baffles and final temperature on solution crystallization of L-glutamic acid in an oscillatory baffled crystallizer," Chem Eng J, vol. 1, pp. 226-233, 2010
In many industry processes, it’s a key factor of excellent heat transfer performance.
Liao, "Effects of mixing, seeding, material of baffles and final temperature on solution crystallization of L-glutamic acid in an oscillatory baffled crystallizer," Chem Eng J, vol. 1, pp. 226-233, 2010
Online since: July 2013
Authors: Shi Wu Bai, Chang Xue Xu, Liu Qing Yang, Yu Liu, Bin Feng
Field welding is a key point for X100 pipe application, how to ensure that the reliability of the welding joint meets engineering requirements is a significant topic [4,5].
In this paper, the continuous cooling transformation rules of the weld HAZ for X100 pipeline steel was researched by thermal simulation method, the microstructure and properties of weld HAZ of single-pass and double-pass welding were simulated and analyzed, the effects of different welding thermal cycle parameters on the microstructure and properties of weld HAZ were investigated, and the control measures to optimize microstructure and properties of weld HAZ of X100 pipeline steel were proposed, which provided a technical basis for the welding process of X100 pipeline steel. 2 Experimental method A typical X100 line pipe is chosen as experimental material whose outer diameter is 1016mm and wall thickness is 14.7mm.
In this paper, the continuous cooling transformation rules of the weld HAZ for X100 pipeline steel was researched by thermal simulation method, the microstructure and properties of weld HAZ of single-pass and double-pass welding were simulated and analyzed, the effects of different welding thermal cycle parameters on the microstructure and properties of weld HAZ were investigated, and the control measures to optimize microstructure and properties of weld HAZ of X100 pipeline steel were proposed, which provided a technical basis for the welding process of X100 pipeline steel. 2 Experimental method A typical X100 line pipe is chosen as experimental material whose outer diameter is 1016mm and wall thickness is 14.7mm.
Online since: December 2012
Authors: Hai Jun Zhao, Hai Xia Wang, Jia Dong Chang, Qi Li, Li Ping Tian
Effect Factors Analysis of Flow Generation Noise from Muffler Element with Inserted Tube
Haijun ZHAO1,a,Haixia Wang1,b,Jiadong CHANG1,c,Liqi1,d,
Liping TIAN1,e
1 Department of Mechanical Engineering, Luoyang Institute of Science and Technology, China
ahjzhaoly@sina.com, b24637052@qq.com, cchangjiadong882265@126.com, d360220177@qq.com,e1963717564@qq.com
Key words:Flow noise regeneration, effect factor; inserted tube; muffler
Abstract.
To increase making cost and be able to disclose production mechanism of flow regenerated noise, using orthogonal experiment design of one factor with 3 levels and the other 3 factors with 1 levels, so it only need 12 test work pieces, test experiment arrangement of material structure dimension is indicated in table 1, the parameters is often used in practice, in the table 1 and 2 is respective level of every factor, the number in bracket is level value, fig.2 is test pieces of inserted tubes.
To increase making cost and be able to disclose production mechanism of flow regenerated noise, using orthogonal experiment design of one factor with 3 levels and the other 3 factors with 1 levels, so it only need 12 test work pieces, test experiment arrangement of material structure dimension is indicated in table 1, the parameters is often used in practice, in the table 1 and 2 is respective level of every factor, the number in bracket is level value, fig.2 is test pieces of inserted tubes.
Online since: November 2012
Authors: Li Chen, Tao Li, Yi Jun Chen, Shan Dan Zhou
Study on Developing Data Depot for the Equipment Support
Tao Li 1, a, Li Chen 1,b, Yijun Chen1, Shandan Zhou 2
1Department of Air Ammunition, Xuzhou Airforce college, Jiangsu 221000
2Dept.of POL and Material, Airforce Service College, Xuzhou 221000
ajiangnanlt@sina.com, brubychenl@sina.com
Keywords: Equipment, Data depot, Information management, Support
Abstract.In information war, support effectiveness of equipment depends on the ability of information management.
information needs, planning equipment in data warehouse 12 topic area, they were 1) equipment use and maintenance of the requested information, it includes task and use requirement data, average fault time interval, average maintenance interval, and mean time to repair, the total number of the security of the equipment in the maintenance plan, working hours, annual plan of maintenance cycle time, repair the required number of personnel and technology level, etc.; 2) equipment availability and reliability, maintainability, failure mode and effect analysis and harm of information; 3) equipment use and maintenance work, use and maintenance work list task analysis, personnel and security demand information; 4) to protect the equipment and training equipment demand information; 5) by the requirements and instructions are information; 6) facilities required information; 7) personnel quantity and professional skills required information; 8) packaging and supply demand information; 9) transportation engineering
Physical data model by including key code and model of the physical properties of expansion interface layer data model get, mainly used to realize the performance of the data warehouse optimization
information needs, planning equipment in data warehouse 12 topic area, they were 1) equipment use and maintenance of the requested information, it includes task and use requirement data, average fault time interval, average maintenance interval, and mean time to repair, the total number of the security of the equipment in the maintenance plan, working hours, annual plan of maintenance cycle time, repair the required number of personnel and technology level, etc.; 2) equipment availability and reliability, maintainability, failure mode and effect analysis and harm of information; 3) equipment use and maintenance work, use and maintenance work list task analysis, personnel and security demand information; 4) to protect the equipment and training equipment demand information; 5) by the requirements and instructions are information; 6) facilities required information; 7) personnel quantity and professional skills required information; 8) packaging and supply demand information; 9) transportation engineering
Physical data model by including key code and model of the physical properties of expansion interface layer data model get, mainly used to realize the performance of the data warehouse optimization
Online since: August 2011
Authors: Li Rong Wan, Cheng Long Wang, Guang Yu Zhou, Wen Ming Zhao
Mine Hoist bearing condition monitoring and fault diagnosis system based on Labview
Lirong Wan 1,a, Guangyu Zhou1,b , Chenglong Wang1,c, Wenming Zhao1,d
1College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, Qingdao 266510, China
awanlr666@163.com, bguangyu000@126.com, cwcllym@hotmail.com, dzhaowenming14235@163.com
Keywords:mine hoist; Labview; bearing; vibration monitoring; signal analysis; fault diagnosis
Abstract.
The mine hoist system is the large-scale and complex machine with the duty of hoisting the coal and gangue, lowering material and lifting personnel and equipments, so it is called “the laryngopharynx of mine production”.
IPC is the main control unit in the on-line monitoring of the system, it plays a key role in signal analysis and fault diagnosis, dynamic picture display and alarm indication.
The mine hoist system is the large-scale and complex machine with the duty of hoisting the coal and gangue, lowering material and lifting personnel and equipments, so it is called “the laryngopharynx of mine production”.
IPC is the main control unit in the on-line monitoring of the system, it plays a key role in signal analysis and fault diagnosis, dynamic picture display and alarm indication.
Online since: May 2011
Authors: Yan Zhao, Dong Xu Li
Evaluation of Pushing and Pulling Force for Substitute Astronaut (SA) at Comfortable Position
Dong-xu Li, Yan Zhao,
College of Aerospace and Material Engineering, National University of Defense Technology, China;
aregayaya@yahoo.com.cn
Key words: Ergonomic evaluation; Manned spaceflight; Pushing and pulling; Substitute Astronaut
Abstract.
Online since: July 2011
Authors: Xiao Wei Cheng, Yong Ma, Zao Yuan Li, Xiao Yang Guo
Corrosion mechanism on oilwell cement in formation water with high content of CO2&H2S
Cheng Xiaowei 1, a, Ma Yong2, b, Li Zaoyuan1, c, and Guo Xiaoyang1, d
1Key Laboratory of Oil and Gas Reservoir Geology and Exploitation , Southwest Petroleum University, Chengdu 610500 P.R.China
2Gas Production Technology Research Institute,PetroChina Southwest Oil & Gasfield Company, Guanghan 618300, China; 3.School of Petroleum Engineering,Southwest Petroleum University, Chengdu 610500,China
acxw0261@sina.com, bzhanghua0403@126.com, cswpulzy@yahoo.com.cn, dguoxiaoyangswpu@126.com
Keywords: cement paste, formation water, H2S/CO2, corrosion, cementing
Abstract.
Fig. 3 TG-DTA thermogram of superficial cement in formation water with high content of CO2&H2S As the XRD spectrum of attachments on the internal wall of reaction kettle (Fig. 4)shows, corrosion attachments mainly are CaCO3 and two sorts of ferric complexes (named Hedenbengite and Julgoldite), and they probably are products of corrosion reaction between cement corrosion products and the internal wall material(the 316L stainless steel) of reaction kettle.
Acknowledgements The authors are grateful for the support by National Science and Technology Major Project of the Ministry of Science and Technology of China (2008zx05022), Open Fund (PLN 0910) of State Key Laboratory of Oil and Gas Reservoir Geology & Exploitation (Southwest Petroleum University) and The Natural Science Foundation of SWPU (2010177).
Fig. 3 TG-DTA thermogram of superficial cement in formation water with high content of CO2&H2S As the XRD spectrum of attachments on the internal wall of reaction kettle (Fig. 4)shows, corrosion attachments mainly are CaCO3 and two sorts of ferric complexes (named Hedenbengite and Julgoldite), and they probably are products of corrosion reaction between cement corrosion products and the internal wall material(the 316L stainless steel) of reaction kettle.
Acknowledgements The authors are grateful for the support by National Science and Technology Major Project of the Ministry of Science and Technology of China (2008zx05022), Open Fund (PLN 0910) of State Key Laboratory of Oil and Gas Reservoir Geology & Exploitation (Southwest Petroleum University) and The Natural Science Foundation of SWPU (2010177).
Online since: July 2011
Authors: Liu Zhao, Zhi Hong Ma, Li Gang Pan, Ji Hua Wang, Dong Wang
Recent developments in microextraction related techniques for trace environmental analysis
Liu Zhao1,2,a, Zhihong Ma1,2,b, Dong Wang1,2,3,c, Ligang Pan1,2,d and Jihua Wang1,2,e
1 Beijing Research Center for Information Technology in Agriculture, 100097 Beijing, China;
2 Beijing Research Center for Agrifood Testing and Farmland Monitoring, 100097 Beijing, China;
3 College of Food Science and Nutritional Engineering, China Agricultural University, 100094 Beijing, China
azhaoliu@nercita.org.cn, bzhma@nercita.org.cn, cwangd@nercita.org.cn, dlgpan@nercita.org.cn, e jhwang@nercita.org.cn
Keywords: Stir-bar sorptive extraction, Single-drop microextraction, Membrane-assisted solvent extraction, Microextraction by packed sorbent, environmental analysis.
The key aspect of MEPS is that the volume of elution solvent is of a suitable order of magnitude to be injected into GC or LC systems.
Most current MEPS applications involve on-line connection with LC rather than GC since with the automated procedure it is not easy to dry the SPE material before elution, and small amounts of water get injected to the GC instrument.
The key aspect of MEPS is that the volume of elution solvent is of a suitable order of magnitude to be injected into GC or LC systems.
Most current MEPS applications involve on-line connection with LC rather than GC since with the automated procedure it is not easy to dry the SPE material before elution, and small amounts of water get injected to the GC instrument.
Online since: October 2014
Authors: Yu Kun Bai, Yu Wei Sun
A kind of novel dual-core high birefringence photonic crystal fiber
Yuwei Sun1, a, Yukun Bai1,b
1School of Computer and Communication Engineering, Tianjin University of Technology,
Tianjin, 300384, China
asun81962066@163.com, btjutbai_1@163.com
Keywords: photonic crystal fiber; dual-core; dispersion; birefringence
Abstract: A dual-core photonic crystal fiber(PCF) with high birefringence, short coupling length and broadband flat dispersion is proposed in the paper.
Throughout the numerical analysis, the refractive index of background material SiO2 is set to be 1.44.
Dispersion is one of the key parameters of optical fibers and it can result in the broadening of optical pulses while transmitting in optical fiber.
Throughout the numerical analysis, the refractive index of background material SiO2 is set to be 1.44.
Dispersion is one of the key parameters of optical fibers and it can result in the broadening of optical pulses while transmitting in optical fiber.