Results 21 to 30 of about 29,066 (266)
KAGAKU KOGAKU RONBUNSHU, 2001 気泡塔の流動特性に及ぼす油分分散の影響について実験的に検討した．油分の種類および濃度を変えて水道水に分散させ，気泡の流動状態および油分分散を観察し，油滴径分布・ガスホールドアップおよび液相基準物質移動容量係数を測定した．液中に安定に分散する小さな油滴が流動特性に影響する．ガスホールドアップは水道水の場合より高く，容量係数は低くなる．これらのことより，油分分散系では物質移動係数が低下すると推察される．
Bando, Yoshiyuki +5 more
openaire +1 more source
Computation, 2019 A precise estimation of the bubble size distribution (BSD) is required to understand the fluid dynamics in gas-liquid bubble columns at the “bubble scale,” evaluate the heat and mass transfer rate, and support scale-up approaches.
Giorgio Besagni, Fabio Inzoli
doaj +1 more source
Characteristics of Bubbles and Gas Holdup In A Two-Phase Column For Different Liquid Phases [PDF]
Engineering and Technology Journal, 2007 Experimental study of gas holdup (Eg), bubble diameter (dvs) interfacial area(a) m-1, small bubble rise velocity (Ubs), and bubble rise velocity (Ubr) in (0.1mi.d) and (1.5m) high column operated at ambient temperature and pressureconditions.
Auroba. Abdullah
doaj +1 more source
Chemical Engineering Transactions, 2021 Bubble column reactors basically consist of a vertical cylinder filled by a liquid phase in which a gas phase is distributed in the liquid at the column bottom by an appropriate distributor system and moves along the column in the form of bubbles.
Carmen De Crescenzo +7 more
doaj +1 more source
Chemical Engineering Transactions, 2013 Bubble columns are multiphase contact devices for mass and heat transfer, which are intensively used in different industrial areas. Flow and turbulence in these equipments are induced by bubble rise motion.
D.I. Sanchez-Forero +4 more
doaj +1 more source
Chemical Engineering Transactions, 2015 The bubble motion in non-Newtonian fluids is extensively used in many industrial processes. The influence of the liquid viscosity in the hydrodynamic behaviour of bubble columns is related to the bubble formation processes and the tendency to coalescence.
D.I. Sanchez-Forero +4 more
doaj +1 more source
Effect Of Solid Catalyst On Bubble Rise Velocity And Gas- Drift Flux In Three-Phase-Columns [PDF]
Engineering and Technology Journal, 2007 The bubble rise velocity and drift flux were measured in 0.051 m i.d glass column with ethanol as the liquid phase, cobalt catalyst as the solid phase in concentration varying from (1.0 to 0.4) vol % in three phase column.
Kamal Ahmad
doaj +1 more source
Bubble Size Distribution In Gas-Liquid Dispersion Column
Journal of Engineering, 2023 The present work investigates the effect of; superficial air velocities of: 1, 3, and 6 cm/s for two types of perforated distributor on hydrodynamic characteristic in a gas-liquid dispersion column of; air-water, and airaqueous-n-propanol solution ...
Thamer J. Mohammed +2 more
doaj +1 more source
Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments
FEBS Open Bio, EarlyView.Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley +1 more source
Protocol for quantifying miRNA trafficking across the endosomal membrane
FEBS Open Bio, EarlyView.An in vitro protocol measures miRNA uptake into endosomes isolated from mammalian cell extracts, which are free of subcellular contaminants. Performed at 37 °C in the presence of ATP, it ensures the import of single‐stranded miRNA into the endosomal lumen.
Syamantak Ghosh +2 more
wiley +1 more source