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Online since: June 2014
Authors: Shu Guo Qu, Jian Long Li
Computational Fluid Dynamics Study on the High Temperature Proton Exchange Membrane Fuel Cell
Shuguo Qu1, a, Jianlong Li1,b
1 Department of chemical Engineering, Qingdao University of Science & Technology, Qingdao, 266042, Shandong, China
ashuguoqu@163.com, bljlong@qust.edu.cn
Keywords: Computational fluid dynamics; Nafion/SiO2 composite membrane; high temperature proton exchange membrane fuel cell; mathematical model.
Proton exchange membrane, as an important material for PEMFC, is the decisive factor of the working temperature of the PEMFC system.
They showed that thermal management strongly affected the fuel cell performance and discussed key optimization parameters for performance improvements.
Applied Thermal Engineering, 29(2009)3409–3417 [16] A.
Proton exchange membrane, as an important material for PEMFC, is the decisive factor of the working temperature of the PEMFC system.
They showed that thermal management strongly affected the fuel cell performance and discussed key optimization parameters for performance improvements.
Applied Thermal Engineering, 29(2009)3409–3417 [16] A.
Online since: June 2015
Authors: Chuan Min Chen, Song Tao Liu, Li Na Zhu, Hong Wei Cao, Jia Liu
Analysis of Particular Pollutants in Waste Transformer Oil
Songtao LIU1, Jia LIU1, Lina ZHU2, Hongwei CAO2, Chuanmin CHEN1,a
1School of Environmental Science & Engineering, North China Electric Power University, Baoding 071003, China
2Henan Electric Power Research Institute, Zhengzhou 450052, China
achuanminchen@gmail.com(corresponding author)
Keywords: Waste transformer oil; PAHs; Benzene series; Gas chromatography-mass spectrometry;
Abstract.
Ronghui XIAO[16] with bamboo charcoal as solid phase extraction material, investigated its enrichment capacity of the adsorption of 16 kinds of polycyclic aromatic hydrocarbons in environmental water samples, DB-35MS elastic quartz capillary column was used to separate the 16 kinds of polycyclic aromatic hydrocarbons, gas chromatography - mass spectrometry for qualitative and quantitative analysis of polycyclic aromatic hydrocarbons, the results show that the method can meet the practical water determination.
The sample pretreatment is the key and difficult point of the test.
Analysis and feasibility study on additives recycling of waste engine oil, Lubrication Engineering. 35(2010)79-83
Ronghui XIAO[16] with bamboo charcoal as solid phase extraction material, investigated its enrichment capacity of the adsorption of 16 kinds of polycyclic aromatic hydrocarbons in environmental water samples, DB-35MS elastic quartz capillary column was used to separate the 16 kinds of polycyclic aromatic hydrocarbons, gas chromatography - mass spectrometry for qualitative and quantitative analysis of polycyclic aromatic hydrocarbons, the results show that the method can meet the practical water determination.
The sample pretreatment is the key and difficult point of the test.
Analysis and feasibility study on additives recycling of waste engine oil, Lubrication Engineering. 35(2010)79-83
Online since: August 2012
Authors: Wei Wang, Yi Qian Yang, Peng Hui Liu, Jing Chuan Yao, Zhen Sheng Dong
Experimental Study on Dynamic Behaviors of Concrete Bridge in China Existing Railway Speed Increase to 200~250km/h
Penghui Liu1, Yiqian Yang1, Jingchuan Yao1, Wei Wang1, Zhensheng Dong1
Railway Engineering Research Institute, China Academy of Railway Science, 100081 Beijing, China
email: liupenghui@rails.com.cn, yangyiqian@rails.com.cn, yjcwxj@rails.com.cn, wangyawei5241@126.com, dzhsheng007@163.com
KEY WORDS: Bridge; Dynamic Behaviors; Speed Increase.
Sometimes, a few light-weight abutments and flexible piers are used to reduce engineering quantity.
Because of the low speed early, which of the passenger train is less than 120km/h and the freight train is not ruled in design code with the operating speed of 60km/h, the bridge were designed to fulfill the requirement of ultimate capacity and save material.
Sometimes, a few light-weight abutments and flexible piers are used to reduce engineering quantity.
Because of the low speed early, which of the passenger train is less than 120km/h and the freight train is not ruled in design code with the operating speed of 60km/h, the bridge were designed to fulfill the requirement of ultimate capacity and save material.
Online since: August 2011
Authors: Takayuki Kitajima, Shigeki Okuyama, Akinori Yui, Hiroshi Matsuoka, Go Okahata
Figure 1 shows the key features of the diamond stick for the rubbing experiment [5].
Material properties of the diamond stick and the cobalt-free tungsten carbide (CW500, Dijet Co.) are shown in Table 1.
In the rubbing experiment, lubricants are sprayed on the tungsten-carbide surface using a MQL (minimum quantity of lubrication) system (Fuji BC Engineering, FK1-M-LM).
Fujiwara: Study on Cutting of Cemented Carbides, Journal of the Japan Society for Precision Engineering, 69, 12 (2003) 1724 (in Japanese).a [4] J.
Material properties of the diamond stick and the cobalt-free tungsten carbide (CW500, Dijet Co.) are shown in Table 1.
In the rubbing experiment, lubricants are sprayed on the tungsten-carbide surface using a MQL (minimum quantity of lubrication) system (Fuji BC Engineering, FK1-M-LM).
Fujiwara: Study on Cutting of Cemented Carbides, Journal of the Japan Society for Precision Engineering, 69, 12 (2003) 1724 (in Japanese).a [4] J.
Online since: July 2018
Authors: Kyung Man Moon, Tae Sil Baek, Myeong Hoon Lee
Effect of Osmotic Pressure by Salt Concentration on Corrosion Resistance of Anti-Corrosive Paint
Kyung-Man Moon1, Myung-Hoon Lee2,a* and Tae-Sil Baek3
1Dept. of Marine Equipment Engineering, Korea Maritime and Ocean University,
Dong Sam-Dong,Yong Do-ku, Busan, Korea
2Dept. of Marine System Engineering, Korea Maritime and Ocean University,
Dong Sam-Dong,Yong Do-ku, Busan, Korea
3Dept. of Steel Industry, Pohang College, Pohang City, Korea
aleemh@kmou.ac.kr
Keywords: Acid rain, Environmental contamination, Anti-corrosive paint, Impedance, Osmotic pressure, Salt concentration, Coated steel plate, Bare steel plate
Abstract.
Experimental Procedure SS 400 steel with size of 30cm x 2cm x 0.3cm is prepared and cleaned with cleaning water for removing polluted material deposited on the surface, and then, removed oxide film by grinding blast cleaning method until surface profile is Sa 4.
As revealed in Table 3, corrosion current densities of all samples in the case of submerged in 0.1% and 9% NaCl solutions exhibited higher values compared to 3% NaCl solution.Thus, a large amount of chloride ion dissolved in 9% NaCl solution and higher osmotic pressure than 3% NaCl solutuon play a more key role in corrosion behavior of the coated steel compared to the bare steel.
Experimental Procedure SS 400 steel with size of 30cm x 2cm x 0.3cm is prepared and cleaned with cleaning water for removing polluted material deposited on the surface, and then, removed oxide film by grinding blast cleaning method until surface profile is Sa 4.
As revealed in Table 3, corrosion current densities of all samples in the case of submerged in 0.1% and 9% NaCl solutions exhibited higher values compared to 3% NaCl solution.Thus, a large amount of chloride ion dissolved in 9% NaCl solution and higher osmotic pressure than 3% NaCl solutuon play a more key role in corrosion behavior of the coated steel compared to the bare steel.
Online since: September 2013
Authors: Zaki Su’ud, Feriska H. Irka, Taufiq Imam, H. Sekimoto, P. Sidik
Lead-bismuth cooled fast reactors are among important candidate of Gen IV NPP which have inherent/passive safety feature, ability to utilize uranium much more efficient compared to the LWR, non-proliferation resistance, and economical.[8-12] The key strategy to achieve inherent safety capability for fast reactors generally by minimizing excess reactivity to avoid super prompt critical accident or unprotected rod run-out transient overpower (UTOP) accident[5,7,8,10], optimizing natural circulation component to anticipate unprotected loss of flow (ULOF) accident, optimizing the reactivity feedback to maximize safety margin during severe accident[5,7,8,10].
These behavior are strongly related to the high burnup material in the case C which can reach more than 38% HM at the disposal time.
Sekimoto, Preliminary Design Study of the Ultra Long Life Fast Reactor’, Nuclear Engineering and Design, Vol. 140, 1993, pp.251-260
[13] Sekimoto, H. et al. (2001) ‘CANDLE: The New Burn-up Strategy, Nuclear Science and Engineering’, 139, p. 1-12 [14] Sekimoto, H. and S.
These behavior are strongly related to the high burnup material in the case C which can reach more than 38% HM at the disposal time.
Sekimoto, Preliminary Design Study of the Ultra Long Life Fast Reactor’, Nuclear Engineering and Design, Vol. 140, 1993, pp.251-260
[13] Sekimoto, H. et al. (2001) ‘CANDLE: The New Burn-up Strategy, Nuclear Science and Engineering’, 139, p. 1-12 [14] Sekimoto, H. and S.
Online since: September 2011
Authors: Xue Shan Xia, Tie Liu Jia, Li Gao, Jie Jie Dai, Xiao Mei Sun, Cai Xia Lu, Li Liu, Yue Feng, Heng Yang, Da Qiao Wei
However, these methods often require the special DNA fluorescent materials staining, such as silver.
Materials and Methods 2.1.
Methylmercury hydroxide may be a suitable denaturant in some cases, but it is a dangerous and extremely toxic materials to use and is not easy to purchase.
These methods require expensive additional equipment and special DNA fluorescent materials staining procedures.
Hayashi, “Recent enhancements in SSCP, Genetic Analysis” Biomolecular Engineering, vol. 14, 1999, pp. 193-196
Materials and Methods 2.1.
Methylmercury hydroxide may be a suitable denaturant in some cases, but it is a dangerous and extremely toxic materials to use and is not easy to purchase.
These methods require expensive additional equipment and special DNA fluorescent materials staining procedures.
Hayashi, “Recent enhancements in SSCP, Genetic Analysis” Biomolecular Engineering, vol. 14, 1999, pp. 193-196
Online since: June 2013
Authors: Maryam Varmazyar, Michael Kirley, Nicholas Haritos, Tim Peterson
Engineering structures 19 (1997) 718
Ocean engineering 38 (2011) 329
Earthquake Engineering & Structural Dynamics 29 (2000) 1131-1152
Journal of Structural Engineering 132 (2006) 1491-1501
Inverse Problems in Science & Engineering 18 (2010) 997-1021
Ocean engineering 38 (2011) 329
Earthquake Engineering & Structural Dynamics 29 (2000) 1131-1152
Journal of Structural Engineering 132 (2006) 1491-1501
Inverse Problems in Science & Engineering 18 (2010) 997-1021
Online since: March 2007
Authors: Akihisa Inoue, Yoshihiko Yokoyama
Conventional engineering metals/alloys exhibit
superior plasticity by the systematic dislocation movement.
BGAs have yielded new application areas as specified structural materials [5,6].
This low fatigue limit is considered as a significant drawback of BGA for using structural materials.
Metastable and Nanocrystalline Materials 24-25(2005), 677-680
Inoue: Materials Transactions, JIM, 46, No12 (2005), 2755-2761.
BGAs have yielded new application areas as specified structural materials [5,6].
This low fatigue limit is considered as a significant drawback of BGA for using structural materials.
Metastable and Nanocrystalline Materials 24-25(2005), 677-680
Inoue: Materials Transactions, JIM, 46, No12 (2005), 2755-2761.
Online since: April 2014
Authors: Wen Cai Xu, Shi Yong Luo, Man Zhao
Theoretically, the ammonic area reflects the types of hydrogen bonds in PU most completely, as well as the distribution of different types of hydrogen bonds in materials.
Experiment Experimental materials All the experimental materials and reagents used in this research are prepared from commercial way.
Macromolecular Materials and Engineering, 2000, 278, 23-35
Time-Temperature Superposition in Styrene/Butadiene/Styrene Block Copolymers International Journal of Polymer Materials, 1974, 3 (1): 51-79
Materials Chemistry and Physics, 2013,138: 277-285
Experiment Experimental materials All the experimental materials and reagents used in this research are prepared from commercial way.
Macromolecular Materials and Engineering, 2000, 278, 23-35
Time-Temperature Superposition in Styrene/Butadiene/Styrene Block Copolymers International Journal of Polymer Materials, 1974, 3 (1): 51-79
Materials Chemistry and Physics, 2013,138: 277-285