Results 51 to 60 of about 145,153 (276)

Dynamical effects induced by long range activation in a nonequilibrium reaction-diffusion system

, 2002
We both show experimentally and numerically that the time scales separation introduced by long range activation can induce oscillations and excitability in nonequilibrium reaction-diffusion systems that would otherwise only exhibit bistability.
A.R. Gourlay, A.R. Gourlay, D. Horváth, D. Sníta, E. Dulos, E. Dulos, F. Gauffre, I. Lengyel, I. Nagypal, J. Boissonade, J. Boissonade, J. Boissonade, J.E. Pearson, K.J. Lee, K.J. Lee, M. Fuentes, M. Fuentes, M. N. Kuperman, P. Blanchedeau, P. Blanchedeau, P. De Kepper, P. De Kepper, P. Deuflhard, P. Kaps, Q. Ouyang, Q. Ouyang, V. Castets, V. Dufiet, Z. Noszticzius, Á. Tóth, Á. Tóth   +30 more
core   +1 more source

Liquid–liquid dispersion in a continuous oscillatory baffled reactor – Application to suspension polymerization [PDF]

, 2015
Reducing energy costs, improving safety, minimizing waste are the current aims of chemical engineering. Process intensification in fine chemistry has been extensively studied but less work refers to heterogeneous reactions involving two liquid phases ...
Gourdon, Christophe, Lasuye, Thierry, Lobry, Emeline, Xuereb, Catherine   +3 more
core   +3 more sources

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

Advanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He, Minxian Zhang, Jinqiang Zhang, Hongqi Sun, Shaobin Wang, Xiaoguang Duan   +5 more
wiley   +1 more source

Investigation of oscillatory second-grade fluid flow through porous media under slip and thermal influences

Physics Open
This study presents an analytical investigation of oscillatory magnetohydrodynamic (MHD) flow of an electrically conducting second-grade fluid through a porous medium, incorporating the combined influences of velocity slip, thermal radiation, and a first-
Z. Abbas, A. Gull, G. Nazik, M.Y. Rafiq, M. Mujahid   +4 more
doaj   +1 more source

Oscillatory three-phase flow reactor for studies of bi-phasic catalytic reactions

Chemical Communications, 2015
Oscillatory flow reactor strategy removes the mixing, mass transfer and residence time limitations associated with continuous multi-phase flow approaches for studies of bi-phasic C–C and C–N catalytic reactions.
Abolhasani, Milad, Bruno, Nicholas C., Jensen, Klavs F.   +2 more
openaire   +5 more sources

Electrocatalytic Reduction of CO2 to Ethylene: Catalyst Design and Synchrotron‐Based Characterizations

Advanced Functional Materials, EarlyView.
This review evaluates strategies for electrochemical CO2 reduction to ethylene, focusing on copper‐based catalyst design and microenvironment modulation to achieve industrial‐grade performance. By leveraging operando synchrotron‐based characterizations, we provide a multiscale understanding of dynamic structural transformations and key reaction ...
Meng Zhang, Zuolong Chen, Yimin A. Wu
wiley   +1 more source

Artifact‐Minimizing Ultrathin Transparent Electrodes Fabricated via iCVD for In Vivo Optogenetic Stimulation and Neural Signal Monitoring of Primary Visual Cortex

Advanced Functional Materials, EarlyView.
We present ultrathin flexible transparent electrodes through iCVD‐enabled molecular control of 10 nm gold films on poly(dimethylaminomethylstyrene). In vivo validation demonstrated photoelectric artifact reduction vs. opaque electrodes and preservation of natural neural dynamics.
Tae Jin Mun, Minju Kim, Chaesung Kim, Yunyoung Choi, In‐Yeop Baek, Younghak Cho, Gyeongyong Lee, Yerim Jang, Min‐Ho Nam, Wonryung Lee, Maesoon Im, Hyejeong Seong   +11 more
wiley   +1 more source

Diffusion-thermo and thermo-diffusion of gravity-driven chemical reactive magneto-Casson fluid in vertical oscillatory porous media with inclined magnetic field: Finite element Solution

Partial Differential Equations in Applied Mathematics
An interest in enhancing heat transfer and industrial materials performance has propelled studies of diverse viscoelastic fluids with various conditions and geometries.
B. Prabhakar Reddy, MD. Shamshuddin, S.O. Salawu, M. Paul Matao   +3 more
doaj   +1 more source

Enhanced gas-liquid mass transfer of an oscillatory constricted-tubular reactor [PDF]

, 2008
The mass transfer performance has been tested for gas-liquid flow in a new tubular reactor system, the oscillating mesotube (OMT), which features the oscillatory movement of fluid across a series of smooth constrictions located periodically along the ...
Baird M. H. I., Baird M. H. I., Baird M. H. I., Bellhouse B. J., Blakebrough N., Deckwer W. D., Ellenberger J., Gogate P. R., Gouin J. F., Hanhart J., Hewgill M. R., Jealous A. C., Linek V., Linek V., Linek V., Mackley M. R., Ni X., Ni X., Ni X. W., Oliveira M. S. N., Oliveira M. S. N., Reis N., Reis N., Reis N., Renka R., Serieys M., van’t Riet K., Vasconcelos J. M. T., Wang W.   +28 more
core   +1 more source

Tuning Amorphous‐Crystalline Catalytic Interfaces by Mechanochemistry: Cu‐Based Metallic Glasses Coupled with Ceria for CO Oxidation

Advanced Materials, EarlyView.
Ball‐milling Cu‐based metallic glasses with ceria creates a unique nanostructure where metallic glass particles are wrapped by CeO2 nanoparticles. The intimate integration triggers copper state reorganization during reaction and aging, boosting CO oxidation and COPrOx activity.
Maahin Mirzay‐Shahim, Mehran Nabahat, Laia Pascua‐Solé, Isabel Serrano, Ilaria Lucentini, Xènia Garcia, Marina Armengol‐Profitós, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Núria J. Divins, Ignacio J. Villar‐Garcia, Virginia Pérez‐Dieste, Carlos Escudero, Carlo Marini, Jordi Llorca, Eloi Pineda, Pere Bruna, Lluís Soler   +17 more
wiley   +1 more source