Results 31 to 40 of about 29,070 (268)
Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology
Advanced Engineering Materials, EarlyView.We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham +7 more
wiley +1 more source
The Effects of Engineered Aeration on Atmospheric Methane Flux From a Chesapeake Bay Tidal Tributary
Frontiers in Environmental Science, 2022 Engineered aeration is one solution for increasing oxygen concentrations in highly eutrophic estuaries that undergo seasonal hypoxia. Although there are various designs for engineered aeration, all approaches involve either destratification of the water ...
Laura L. Lapham +7 more
doaj +1 more source
Unified modeling of bubbly flows in pipes, bubble columns, and airlift columns
Chemical Engineering Science, 2017 Abstract Multiphase CFD simulation is a valuable tool in process engineering which is particularly useful to study new reactor concepts and their scale-up from laboratory to production scale. Simulations of bubbly flows up to industrial dimensions are feasible within the Eulerian two-fluid framework of interpenetrating continua.
Rzehak, R. +4 more
openaire +1 more source
Advanced Engineering Materials, EarlyView.Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios +5 more
wiley +1 more source
CFD model simulation of bubble surface area flux in flotation column reactor in presence of minerals
International Journal of Mining Science and Technology, 2018 Bubble surface area flux (Sb) is one of the main design parameter in flotation column that typically employed to describe the gas dispersion properties, and it has a strong correlation with the flotation rate constant.
A.R. Sarhan, J. Naser, G. Brooks
doaj +1 more source
Effect of pressure on gas holdup in a bubble column and a slurry bubble column.
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 1991 The bubble column is a stainless steel tube with inner diameter of 45 mn and has a cone-shaped bottom. The height of the multiphase contacting section was varied from 0.83 to 1.40 m. The gas was sparged into the column through a single nozzle with inner diameter of 0.59, 1.0, 2.0 or 3.0 mm and with outer diameter of 14 mm.
Kojima, Hiromitsu +2 more
openaire +2 more sources
Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum +5 more
wiley +1 more source
Hydrodynamic Characteristics of a Gas- Liquid –Solid Fluidized Bed Containing a Binary Mixture of Particles [PDF]
Engineering and Technology Journal, 2009 The present work is an experimental study on the effect of solid loading andsolid properties of both single and binary mixtures on the hydrodynamic parameters(gas holdup and bubble dynamics) of a fluidized bed bubble column. The experimentswere performed
Amer A. Abdul Rahman +2 more
doaj +1 more source
Enhanced Photosynthetic Pigment Production Using a Scaled-Up Continuously Circulated Bioreactor
Marine Drugs, 2023 Microalgae have gained attention as a promising source of chlorophylls and carotenoids in various industries. However, scaling up of conventional bubble columns presents challenges related to cell sedimentation and the presence of non-photosynthetic ...
Won-Kyu Lee +9 more
doaj +1 more source