Results 51 to 60 of about 18,985,339 (151)

Effect of Scale-Up on Residence Time and Uranium Extraction on Annular Centrifugal Contactors (ACCs)

open access: yesSeparations, 2023
This work reports the effect of scaling up annular centrifugal contactors (ACCs) upon the residence time distribution and the efficiency of extraction of uranium.
Alastair Baker   +4 more
doaj   +1 more source

Design and optimization of electrochemical microreactors for continuous electrosynthesis [PDF]

open access: yes, 2012
The study focuses on the design and construction, as well as the theoretical and experimental optimization of electrochemical filter press microreactors for the electrosynthesis of molecules with a high added value.
Reynes, Olivier   +9 more
core   +1 more source

Experimental simulation of salt transport in hierarchically nested groundwater flow systems

open access: yes地质科技通报, 2022
Groundwater age and groundwater residence time contain important information about groundwater circulation and evolutionary processes, and have been widely used in the study of groundwater circulation patterns in basins.In this paper, we simulated a ...
Hong Niu   +5 more
doaj   +1 more source

Preparation and application of macromolecules with a fluorescence effect in polymer processing

open access: yesDesigned Monomers and Polymers, 2019
In this study, 9-anthracenemethyl methacrylate (AMMA) and styrene (St) as monomers and benzoyl peroxide as an initiator were used to synthesize P(St-co-AMMA), a macromolecule tracer with a fluorescence effect, via free radical copolymerization.
Meng-Di Chen   +4 more
doaj   +1 more source

Fluidization behavior in a circulating slugging fluidized bed reactor. Part I: Residence time and residence time distribution of polyethylene solids [PDF]

open access: yes, 2007
Square nosed slugging fluidization behavior in a circulating fluidized bed riser using a polyethylene powder with a very wide particle size distribution was studied.
van Sint Annaland, M.   +4 more
core   +1 more source

Mathematical Modeling and Design of Parboiled Paddy-Impinging Stream Dryer Using the CFD-DEM Model

open access: yesFoods
Impinging stream dryers (ISDs) are effective for removing moisture from particulate materials because of the complex multiphase transport of air particles in ISDs.
Thanit Swasdisevi   +2 more
doaj   +1 more source

A New Approach for Modelling Residence Time Distribution in a Co-rotating Twin Screw Extruder

open access: yesCHIMIA, 2001
A model to determine the residence time distribution (RTD) in a co-rotating twin screw extruder is proposed. The method couples a thermomechanical approach with a chemical engineering approach and allows us to obtain the RTD without a fitting ...
Arnaud Poulesquen   +3 more
doaj  

Onset velocity of circulating fluidization and particle residence time distribution: A CFD-DEM study

open access: yes, 2015
Until now, the onset velocity of circulating fluidization in liquid-solid fluidized beds has been defined by the turning point of the time required to empty a bed of particles as a function of the superficial liquid velocity, and is reported to be only
Han, Qiqi   +3 more
core   +1 more source

Universality of residence-time distributions in non-adiabatic stochastic resonance [PDF]

open access: yes, 2004
International audienceWe present a mathematically rigorous expression for the residence-time distribution of a periodically forced Brownian particle in a bistable potential.
Berglund, Nils   +3 more
core   +1 more source

Investigations Concerning the Residence Time Distribution of Twin-Screw-Extrusion Processes as Indicator for Inherent Mixing

open access: yesPharmaceutics, 2018
Over recent years Twin-Screw-Extrusion (TSE) has been established as a platform technology for pharmaceutical manufacturing. Compared to other continuous operation, one of the major benefits of this method is the combination of several unit operations ...
Jens Wesholowski   +2 more
doaj   +1 more source

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