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Online since: February 2008
Authors: Frank A. Coutelieris
Coutelieris
Department of Engineering and Management of Energy Resources, University of Western
Macedonia, Bakola & Sialvera, 50100 Kozani, Greece, Tel: +302461056751; Fax: +302461021731
and
National Center for Scientific Research "Demokritos", 15310 Aghia Paraskevi Attikis, Greece, Tel:
+302106503447; Fax: +302106525004
fcoutelieris@uowm.gr; frank@ipta.demokritos.gr
Keywords: SOFC, anode; catalyst layer; heat transfer; mass transport.
Introduction During the last years, fuel cells have attracted considerable scientific and engineering interest because they present high efficiency and very low environmental impact.
The mass transport within a fuel cell is a key factor to its performance.
In particular, anode is divided into three regions: an electrolyte region, an active catalyst region (catalyst layer) that provides a catalytic site for the oxidation of fuel and a diffusion region (diffusion layer) composed of highly porous and electronically conductive material.
By taking into account the material balance for the water, its mass flux is given as 4 d w w I i j j F − = + (4) where 4 I i F − is the flux of the produced water mass and dwj represents the water flux entering the catalyst through the diffusion layer.
Introduction During the last years, fuel cells have attracted considerable scientific and engineering interest because they present high efficiency and very low environmental impact.
The mass transport within a fuel cell is a key factor to its performance.
In particular, anode is divided into three regions: an electrolyte region, an active catalyst region (catalyst layer) that provides a catalytic site for the oxidation of fuel and a diffusion region (diffusion layer) composed of highly porous and electronically conductive material.
By taking into account the material balance for the water, its mass flux is given as 4 d w w I i j j F − = + (4) where 4 I i F − is the flux of the produced water mass and dwj represents the water flux entering the catalyst through the diffusion layer.
Online since: July 2012
Authors: Gui Min Tian, Li Li Zheng, Yong Guang Cheng, Shuang Mei Zhu, Jin Zhong Niu, Hao Shan Hao
Phosphine-free Synthesis and Photoluminescence Properties of ZnSe:Cu/ZnSe/ZnS Core/shell Nanocrystals
Jinzhong Niu1, a, Guimin Tian1, Lili Zheng1, Yongguang Cheng1, Shuangmei Zhu1, and Haoshan Hao1,b
1Department of Mathematical and Physical Sciences, Henan Institute of Engineering, Zhengzhou, 451191, P.
It is well known that TOP and TBP are hazardous, unstable, and expensive materials and generally require glove box operations.
Acknowledgements This work was supported by the Natural Science Research Program of Henan Educational Committee, China (12A430003, 12A140002), and the Key Science and Technology Program of Henan Province, China (Grant No.112102310543), Youth Fund of Henan Institute of Engineering, China (Y2010020).
It is well known that TOP and TBP are hazardous, unstable, and expensive materials and generally require glove box operations.
Acknowledgements This work was supported by the Natural Science Research Program of Henan Educational Committee, China (12A430003, 12A140002), and the Key Science and Technology Program of Henan Province, China (Grant No.112102310543), Youth Fund of Henan Institute of Engineering, China (Y2010020).
Online since: February 2013
Authors: Mohamed Nayel, Sai Yu Shi, Fei Cheng
The media materials are usually optics fiber and copper-wires.
In tabu search, there are five key concepts to guarantee the performance of optimization, which are neighborhood, tabu list, tabu length, candidate and aspiration criterion.
Liu, „Research and implementation of on-line monitoring techniques for high voltage equipments in Smart Grid,“ High Voltage Engineering and Application (ICHVE), 2010 International Conference on, pp. 236-239, 11-14 Oct 2010
Hyun, "Optimal placement of phasor measurement units with GPS receiver," Power Engineering Society Winter Meeting, 2001.
In tabu search, there are five key concepts to guarantee the performance of optimization, which are neighborhood, tabu list, tabu length, candidate and aspiration criterion.
Liu, „Research and implementation of on-line monitoring techniques for high voltage equipments in Smart Grid,“ High Voltage Engineering and Application (ICHVE), 2010 International Conference on, pp. 236-239, 11-14 Oct 2010
Hyun, "Optimal placement of phasor measurement units with GPS receiver," Power Engineering Society Winter Meeting, 2001.
Online since: November 2011
Authors: Walter Bartelmus, Radoslaw Zimroz
Bartelmus, Gearbox condition estimation using cyclo-stationary properties of vibration signal, Key Engineering Materials 413-414 (2009) 471-478
Zimroz, Application of Spectral Correlation Techniques on Mining Machines Signals: Extraction of Fault Signatures, 2nd World Congress on Engineering Asset Manag. and the 4th Int.
Zimroz, Application of Spectral Correlation Techniques on Mining Machines Signals: Extraction of Fault Signatures, 2nd World Congress on Engineering Asset Manag. and the 4th Int.
Online since: May 2011
Authors: Kirit N. Lad, Heena Dhurandhar, Arun Pratap, T. Lilly Shanker Rao
Lad3, b and Arun Pratap3,c
1 Dept. of Electronics, Mukesh Patel School of Technology Management & Engineering, SVKM’s NMIMS deemed University, Vile Parle West, Mumbai – 400 056, India
2 Electronics Department, Narmada College of Science & Commerce, Zadeshwar,
Bharuch – 392011, India
3 Condensed Matter Physics Laboratory, Applied Physics Department, Faculty of Technology and Engineering, The M.
University of Baroda, Vadodara – 390 001, India a heena0609@yahoo.co.in, b kiritlad@yahoo.com, c apratapmsu@yahoo.com Key words: crystallization, isoconversional, activation energy, metallic glasses.
Experimental Specimens of amorphous Ti50Cu20Ni30 ribbons were prepared by single roller melt spinning technique in an Argon atmosphere at the Institute of Materials Research, Tohoku University, Sendai, Japan.
University of Baroda, Vadodara – 390 001, India a heena0609@yahoo.co.in, b kiritlad@yahoo.com, c apratapmsu@yahoo.com Key words: crystallization, isoconversional, activation energy, metallic glasses.
Experimental Specimens of amorphous Ti50Cu20Ni30 ribbons were prepared by single roller melt spinning technique in an Argon atmosphere at the Institute of Materials Research, Tohoku University, Sendai, Japan.
Online since: September 2011
Authors: An Chun Cheng, Xiao Yue Chen, Di Yan Li, Yong Fang Yao, Huai Liang Xu, Ze Xia Yang, Qing Yong Ni, Wen Zeng, Feng Jun Bi
Materials and Methods
Samples were obtained from rhesus macaques trapped in 8 localities (Heishui, Xiaojin, Bazhong, Jiulong, Hanyuan, Beichuan, Pingwu and Danba) of Sichuan province (Fig1).
We used Primer Premier 5.0 software and the complete mitochondrial DNA sequence (AY612638)of Macaca mulatta [15] to design the following pair of primers to amplify an approximately 500bp control region fragment near the Cytochrome b gene: Upper primer: 5' TAGGGCAATCAGAAAGGAAGTACC 3', Lower Primer: 5' GCCTTGAGGTAAGAACCAGATGC 3' (synthesized by Shanghai Sangon Biological Engineering Technology & Services Co., Ltd.).
PCR products were purified with an EZ Spin Column DNA Gel Extraction Kit (Shanghai Sangon Biological Engineering Technology & Services Co., Ltd.) and direct sequencing was conducted on an ABI PRISM 3730 automated sequencer (Applied Biosystems).
*This work was supported by the Program for Changjiang Scholars and Innovative Research Team in University (IRT0848); Key laboratory of Animal Disease and Human Health of Sichuan Province (SZDSYS-200601), Natural Science Foundation of Educational Commission of Sichuan Province of China (08ZA076).
We used Primer Premier 5.0 software and the complete mitochondrial DNA sequence (AY612638)of Macaca mulatta [15] to design the following pair of primers to amplify an approximately 500bp control region fragment near the Cytochrome b gene: Upper primer: 5' TAGGGCAATCAGAAAGGAAGTACC 3', Lower Primer: 5' GCCTTGAGGTAAGAACCAGATGC 3' (synthesized by Shanghai Sangon Biological Engineering Technology & Services Co., Ltd.).
PCR products were purified with an EZ Spin Column DNA Gel Extraction Kit (Shanghai Sangon Biological Engineering Technology & Services Co., Ltd.) and direct sequencing was conducted on an ABI PRISM 3730 automated sequencer (Applied Biosystems).
*This work was supported by the Program for Changjiang Scholars and Innovative Research Team in University (IRT0848); Key laboratory of Animal Disease and Human Health of Sichuan Province (SZDSYS-200601), Natural Science Foundation of Educational Commission of Sichuan Province of China (08ZA076).
Online since: October 2014
Authors: Yun Liu, Hong Zhang
Experimental studies on the isothermal and heat transfer performance of trough solar power collectors
Yun Liu1,a, Hong Zhang2,b
1Department of Power Engineering, North China Electric Power University, Baoding 071003, China
2School of Energy, Nanjing University of Technology, Nanjing 210009, China
aliuyunlucia@ncepu.edu.cn
bhzhang@njtu.edu.cn
KEY WORDS: medium temperature heat pipe; parabolic trough thermal generating system; solar energy receiver; half circle heated; isothermal performance; heat transfer performance
ABSTRACT: The medium temperature heat pipe is a highly effective heat transfer element through heat exchange due to phase-change of the liquid organic working fluid.
The inlet and outlet of the tube were filled with heat insulating materials to prevent the loss of heat.
Journal of Solar Energy Engineering. 2002,5 (124): 140~144 [4] Ivàn Martínez, Rafael Almanza.
The inlet and outlet of the tube were filled with heat insulating materials to prevent the loss of heat.
Journal of Solar Energy Engineering. 2002,5 (124): 140~144 [4] Ivàn Martínez, Rafael Almanza.
Online since: December 2012
Authors: Min He, Bo Zhou
Authors were with the third batch of the team.
1.2 Research method
1.2.1 Literature review
Literature review covers a wide reference to relevant materials, understanding and analysis on post-disaster reconstruction planning and policy-making, experience, case studies, and existing theory systems from both home and abroad.
1.2.2 Investigation
(1) Key investigation spots: the third batch of investigation team selected the following places as key investigation spots: three worst-hit counties including Wenchuan, Beichuan, and Dujiangyan , which in total covers 15 towns and 25 residents placement areas
It covers how members of society obtain, from government, society and market, the opportunities and resources for survival and development, and thus support their material and spiritual life.
Chinese Journal of Rock Mechanics and Engineering, 2008, 27(12): 2585-2592
It covers how members of society obtain, from government, society and market, the opportunities and resources for survival and development, and thus support their material and spiritual life.
Chinese Journal of Rock Mechanics and Engineering, 2008, 27(12): 2585-2592
Online since: August 2019
Authors: Antonio Tralli, Gabriele Milani, Andrea Chiozzi, Nicola Grillanda
On Collapse Behavior of Reinforced Masonry Domes under Seismic Loads
Nicola Grillanda1,a*, Andrea Chiozzi2,b, Gabriele Milani1,c and Antonio Tralli2,d
1Department of Architecture, Built Environment and Construction Engineering (A.B.C.), Polytechnic of Milan, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
2Department of Engineering, University of Ferrara, Via Saragat 1, 44122, Ferrara, Italy
anicola.grillanda@polimi.it, bandrea.chiozzi@unife.it, cgabriele.milani@polimi.it, dtra@unife.it
*Corresponding author
Keywords: masonry domes; NURBS; upper bound limit analysis; vulnerability assessment; horizontal loads; historical monuments; FRCM.
Therefore, the aim of this paper is to insight the case of masonry domes strengthened through composites materials.
However, the FRP strengthening technique entails several drawbacks, as for instance low vapor permeability, poor behavior at elevated temperatures, incompatibility of resins on different substrate materials, relatively high cost of epoxy resins and no reversibility of the installation.
Caporale, Strengthening of masonry–unreinforced concrete railway bridges with PBO-FRCM materials, Compos.
Tralli, Fast and reliable limit analysis approach for the structural assessment of FRP-reinforced masonry arches, Key Eng.
Therefore, the aim of this paper is to insight the case of masonry domes strengthened through composites materials.
However, the FRP strengthening technique entails several drawbacks, as for instance low vapor permeability, poor behavior at elevated temperatures, incompatibility of resins on different substrate materials, relatively high cost of epoxy resins and no reversibility of the installation.
Caporale, Strengthening of masonry–unreinforced concrete railway bridges with PBO-FRCM materials, Compos.
Tralli, Fast and reliable limit analysis approach for the structural assessment of FRP-reinforced masonry arches, Key Eng.
Online since: December 2025
Authors: Martin Nesládek, Vladimír Mára, Marius Müller, Tomáš Karas, Jan Papuga, Alexander Hasse
Engineering, Technická 4, 160 00 Praha, Czechia
2TU Chemnitz, Institute of Mech.
The material is modeled with kinematic hardening using a bilinear model.
The key findings may be summarized as follows: 1.
Španiel, “An Abaqus plugin for fatigue predictions,” Advances in Engineering Software, vol. 103, pp. 1–11, Jan. 2017, doi: 10.1016/j.advengsoft.2016.10.008
Varfolomeev, Fracture Mechanics Proof of Strength for Engineering Components, 4th ed.
The material is modeled with kinematic hardening using a bilinear model.
The key findings may be summarized as follows: 1.
Španiel, “An Abaqus plugin for fatigue predictions,” Advances in Engineering Software, vol. 103, pp. 1–11, Jan. 2017, doi: 10.1016/j.advengsoft.2016.10.008
Varfolomeev, Fracture Mechanics Proof of Strength for Engineering Components, 4th ed.