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Transient process of methane-oxygen diffusion flame-street establishment in a microchannel

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 988-999 doi: 10.1007/s11708-021-0755-y

Abstract: “Flame-street” is an interesting diffusion flame behavior in which a series of flame-segments is separatelyIn the present paper, the dynamic formation process of a methane-oxygen diffusion flame-street structureThe whole process was completed within 15 ms and all the discrete flames were eventually in a steady-stateflame shape/type change from a tribrachial structure in its fast-propagating phase to a long, trailing diffusionMoreover, chemical insights for the premixed and diffusion branches of the leading flame were also provided

Keywords： micro-combustion     flame-street     diffusion flame     mixing layer     flame propagation speed    

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Diffusion process in enzyme–metal hybrid catalysts

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 921-929 doi: 10.1007/s11705-022-2144-4

Abstract: Here, we investigated the diffusion process in enzyme–metal hybrid catalysts using Pd/lipase-Pluronicexperimental data in previous studies, the Weisz–Prater parameter and efficiency factor of internal diffusionwere calculated to evaluate the internal diffusion limitations in these catalysts.indicated that the enhanced catalytic efficiency of hybrid catalysts may arise from the decreased internal diffusion

Keywords： enzyme–metal hybrid catalyst     internal diffusion     proximity effect     kinetic model    

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Exploring price effects on the residential water conservation technology diffusion process: a case study

Junying CHU, Hao WANG, Can WANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 5,   Pages 688-698 doi: 10.1007/s11783-013-0559-3

Abstract: Adoption Processes) model is developed in order to capture the water conservation technology adoption processThis model is explicitly characterized by the technological selection process under maximum marginal

Keywords： technology selection     model optimization     water price     scenario analysis     consumer behavior    

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Monte Carlo simulation of the diffusion-limited aggregating process of particle suspension systems

Jiajing XU, Lin ZHANG, Yongjian TANG, Wei DAI, Wenwen SHAN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 270-274 doi: 10.1007/s11705-009-0273-7

Abstract: The aggregating process of particle suspension systems is a very universal phenomena and crucial forIn this paper, the aggregating process was simulated with off-lattice diffusion-limited cluster-cluster

Keywords： cluster-cluster aggregation     distribution function     relationship     process     universal    

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High-precision diffusion measurement of ethane and propane over SAPO-34 zeolites for methanol-to-olefinprocess

Dali Cai, Yu Cui, Zhao Jia, Yao Wang, Fei Wei

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 77-82 doi: 10.1007/s11705-017-1684-5

Abstract: The methanol-to-olefin (MTO) process has attracted much attention and many problems including lifetimeIn this paper, we performed a high-precision diffusion measurement of the diffusion behavior of ethaneA slower diffusion velocity was observed in bigger crystals, and the diffusion velocity decline significantlyThe diffusion coefficient was calculated with both the internal and surface diffusion models, and theresults show that the surface diffusion plays a key role in the diffusion process of both ethane and

Keywords： diffusion measurement     methanol-to-olefin process    

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Hierarchical modeling of stochastic manufacturing and service systems

Zhe George ZHANG, Xiaoling YIN

Frontiers of Engineering Management 2017, Volume 4, Issue 3,   Pages 295-303 doi: 10.15302/J-FEM-2017047

Abstract: Micro-scopic models are based on quasi-birth-and-death process because of the phase-type distributed

Keywords： stochastic modeling     QBD process     PH distribution     heavy traffic limits     diffusion process    

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Generic and SME-specific factors that influence the BIM adoption process: an overview that highlights

Elodie HOCHSCHEID, Gilles HALIN

Frontiers of Engineering Management 2020, Volume 7, Issue 1,   Pages 119-130 doi: 10.1007/s42524-019-0043-2

Abstract: In this study, we use an extensive state-of-the-art method to clarify the BIM adoption process and theAs an innovation, the lexical field allocated to the spread of innovations is assigned to BIM (diffusioninfluence BIM adoption and then unify all these studies in one coherent and consistent BIM adoption process

Keywords： BIM     adoption     diffusion     implementation     change management     SMEs     literature review     architecture firms    

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A comprehensive assessment on the durability of gas diffusion electrode materials in PEM fuel cell stack

Arunkumar JAYAKUMAR

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 325-338 doi: 10.1007/s11708-019-0618-y

Abstract: The crucial and expensive component involved in it is the gas diffusion electrode (GDE) and its degradation

Keywords： PEM fuel cell     gas diffusion electrode(GDE)     gas diffusion layer(GDL)     membrane electrode assembly     durability    

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Coupled diffusion of chloride and other ions in saturated concrete

Nattapong DAMRONGWIRIYANUPAP, Linyuan LI, Yunping XI

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 267-277 doi: 10.1007/s11709-011-0112-z

Abstract: The deterioration process is frequently found in marine concrete structures, highway pavements, and bridgesThe diffusion of chloride ions is associated and strongly affected by other ions in the pore solutionstructures was mathematically characterized by the Nernst-Planck equation which considered not only diffusionThe material models of chloride binding capacity and chloride diffusion coefficient were incorporated

Keywords： diffusion     chloride     concrete     Nernst-Planck equation     durability    

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Experimental study of humid air reverse diffusion combustion in a turbulent flow field

GE Bing, ZANG Shusheng, GU Xin

Frontiers in Energy 2007, Volume 1, Issue 4,   Pages 428-434 doi: 10.1007/s11708-007-0062-6

Abstract: Experiments were performed to investigate the differences between the propane/air turbulent diffusionreactive flows past bluff-body and the propane/humid air turbulent diffusion reactive flows in the same

Keywords： propane/humid     propane/air turbulent     bluff-body     turbulent diffusion    

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Preparation of a Pb loaded gas diffusion electrode and its application to CO

Ang LI, Hua WANG, Jinyu HAN, Li LIU

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 381-388 doi: 10.1007/s11705-012-1216-2

Abstract: A Pb loaded gas diffusion electrode was fabricated and used for the electroreduction of CO to formicThe preparation conditions of the gas diffusion electrode were optimized by adjusting the amounts ofpolytetrafluoroethylene (PTFE) in the gas diffusion layer and acetylene black in the catalytic layer.The electrochemical performance of the as-prepared gas diffusion electrode was studied by chronoamperometryThe optimized gas diffusion electrode showed good catalytic performance for the electroreduction of CO

Keywords： electroreduction     carbon dioxide     lead catalyst     gas diffusion electrode     formic acid    

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evaluation of renal function using diffusion weighted imaging and diffusion tensor imaging in type 2

Xiaoyan Chen,Wenxia Xiao,Xinchun Li,Jianxun He,Xiaochun Huang,Yuyu Tan

Frontiers of Medicine 2014, Volume 8, Issue 4,   Pages 471-476 doi: 10.1007/s11684-014-0365-8

Abstract:

This work aims to estimate the value of diffusion weighted imaging (DWI) and diffusion tensor imagingDWI and DTI scans were performed on bilateral kidney using SE single-shot EPI, and apparent diffusion

Keywords： type 2 diabetes mellitus     microalbuminuria     diffusion weighted imaging     diffusion tensor imaging     early-stage    

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Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction

Krishnendu BHATTACHARYYA, G. C. LAYEK

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 471-476 doi: 10.1007/s11705-011-1130-z

Abstract: The magnetohydrodynamic (MHD) boundary layer slip flow and solute transfer over a porous plate in the presence of a chemical reaction are investigated. The governing equations were transformed into self-similar ordinary differential equations by adopting the similarity transformation technique. Then the numerical solutions are obtained by a shooting technique using the fourth order Runge-Kutta method. The study reveals that due to the increase in the boundary slip, the concentration decreases and the velocity increases. On the other hand, with an increase in the magnetic field and mass suction, both boundary layer thicknesses decreased. As the Schmidt number and the reaction rate parameter increases, the concentration decreases and the mass transfer increases.

Keywords： slip flow     MHD boundary layer     reactive solute diffusion     flat plate     suction/injection    

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Molecular diffusion in ternary poly(vinyl alcohol) solutions

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 1003-1016 doi: 10.1007/s11705-021-2121-3

Abstract: The diffusion kinetics of a molecular probe—rhodamine B—in ternary aqueous solutions containing poly(We show that the diffusion characteristics of rhodamine B in such complex systems is determined by aThe presence of glycerol has no noticeable impact on rhodamine B diffusion at low concentration, butsignificantly slows down the diffusion of rhodamine B above 3.9% (w/v) due to a dominating steric inhibitionFurthermore, introducing surfactants (cationic/nonionic/anionic) to the system results in a decreased diffusion

Keywords： fluorescence correlation spectroscopy     poly(vinyl alcohol)     anomalous diffusion     crowding effects     dynamic    

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Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 373-383 doi: 10.1007/s11705-020-1949-2

Abstract: The effect of internal diffusion on char gasification with CO in the temperature range from 1123 K toThe results revealed that the effect of internal diffusion on the initial reaction rate was more significantThus, temperature zones corresponding to chemical reaction and diffusion control were identified.Moreover, the calculated effectiveness factor provided a quantitative estimation of internal diffusion

Keywords： coal char     CO2 gasification     internal diffusion     pore evolution    

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Title Author Date Type Operation

Transient process of methane-oxygen diffusion flame-street establishment in a microchannel

Journal Article

Diffusion process in enzyme–metal hybrid catalysts

Journal Article

Exploring price effects on the residential water conservation technology diffusion process: a case study

Junying CHU, Hao WANG, Can WANG

Journal Article

Monte Carlo simulation of the diffusion-limited aggregating process of particle suspension systems

Jiajing XU, Lin ZHANG, Yongjian TANG, Wei DAI, Wenwen SHAN,

Journal Article

High-precision diffusion measurement of ethane and propane over SAPO-34 zeolites for methanol-to-olefinprocess

Dali Cai, Yu Cui, Zhao Jia, Yao Wang, Fei Wei

Journal Article

Hierarchical modeling of stochastic manufacturing and service systems

Zhe George ZHANG, Xiaoling YIN

Journal Article

Generic and SME-specific factors that influence the BIM adoption process: an overview that highlights

Elodie HOCHSCHEID, Gilles HALIN

Journal Article

A comprehensive assessment on the durability of gas diffusion electrode materials in PEM fuel cell stack

Arunkumar JAYAKUMAR

Journal Article

Coupled diffusion of chloride and other ions in saturated concrete

Nattapong DAMRONGWIRIYANUPAP, Linyuan LI, Yunping XI

Journal Article

Experimental study of humid air reverse diffusion combustion in a turbulent flow field

GE Bing, ZANG Shusheng, GU Xin

Journal Article

Preparation of a Pb loaded gas diffusion electrode and its application to CO

Ang LI, Hua WANG, Jinyu HAN, Li LIU

Journal Article

evaluation of renal function using diffusion weighted imaging and diffusion tensor imaging in type 2

Xiaoyan Chen,Wenxia Xiao,Xinchun Li,Jianxun He,Xiaochun Huang,Yuyu Tan

Journal Article

Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction

Krishnendu BHATTACHARYYA, G. C. LAYEK

Journal Article

Molecular diffusion in ternary poly(vinyl alcohol) solutions

Journal Article

Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Journal Article