Open-flow Microperfusion Combined with Mass Spectrometry for in vivo Liver Lipidomic Analysis

The Analyst ◽  
2021 ◽  
Author(s):  
Tuo Li ◽  
Hui Yang ◽  
Xing Li ◽  
Yinzhu Hou ◽  
Yao Zhao ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Mass Transfer ◽  
High Mass ◽  
Mass Transfer Resistance ◽  
Transfer Resistance ◽  
Permeable Membrane ◽  
Open Flow ◽  
Lipidomic Analysis

At present conventional microdialysis (MD) technique cannot efficiently sampling lipids in vivo, possibly due to the high mass transfer resistance and/or the serious adsorption of lipids on the semi-permeable membrane...

Hierarchical porous and hydrophilic metal–organic frameworks with enhanced enzyme activity

2020 ◽  
Vol 56 (34) ◽  
pp. 4724-4727 ◽  
Author(s):  
Hui Li ◽  
Xuedong Lu ◽  
Qiuhao Lu ◽  
Yi Liu ◽  
Xun Cao ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Enzyme Activity ◽  
Catalytic Activity ◽  
Metal Organic Frameworks ◽  
High Mass ◽  
Mass Transfer Resistance ◽  
Biomimetic Mineralization ◽  
Transfer Resistance ◽  
Hierarchical Porous ◽  
Metal Organic

Metal–organic frameworks (MOFs) for enzyme encapsulation induced biomimetic mineralization are commonly microporous and hydrophobic, which result in a rather high mass transfer resistance of the reactants and restrain the enzyme catalytic activity.

Analysis of Heat and Mass Transfer Between a Desiccant-Air System in a Packed Tower

1987 ◽  
Vol 109 (2) ◽  
pp. 89-93 ◽  
Author(s):  
P. Gandhidasan ◽  
M. Rifat Ullah ◽  
C. F. Kettleborough
Keyword(s):  
Mass Transfer ◽  
Gas Phase ◽  
Heat And Mass Transfer ◽  
Packing Material ◽  
Mass Transfer Resistance ◽  
Liquid Desiccant ◽  
Governing Equations ◽  
Packed Tower ◽  
Transfer Resistance ◽  
Steady State Model

Heat and mass transfer analysis between a desiccant-air contact system in a packed tower has been studied in application to air dehumidification employing liquid desiccant, namely calcium chloride. Ceramic 2 in. Raschig rings are used as the packing material. To predict the tower performance, a steady-state model which considers the heat and mass transfer resistances of the gas phase and the mass transfer resistance of the liquid phase is developed. The governing equations are solved on a digital computer to simulate the performance of the tower. The various parameters such as the effect of liquid concentration and temperature, air temperature and humidity and the rates of flow of air and liquid affecting the tower performance have been discussed.

scholarly journals Modeling of the adsorption kinetics of zinc onto granular activated carbon and natural zeolite

2006 ◽  
Vol 71 (8-9) ◽  
pp. 957-967 ◽  
Author(s):  
Ljiljana Markovska ◽  
Vera Meshko ◽  
Mirko Marinkovski
Keyword(s):  
Mass Transfer ◽  
Activated Carbon ◽  
Simulation Study ◽  
Natural Zeolite ◽  
Granular Activated Carbon ◽  
Model Parameters ◽  
Mass Transfer Resistance ◽  
External Mass Transfer ◽  
Transfer Resistance ◽  
Kinetics Of

The isotherms and kinetics of zinc adsorption from aqueous solution onto granular activated carbon (GAC) and natural zeolite were studied using an agitated batch adsorber. The maximum adsorption capacities of GAC and natural zeolite towards zinc(II) from Langmuir adsorption isotherms were determined using experimental adsorption equilibrium data. The homogeneous solid diffusion model (HSD-model) combined with external mass transfer resistance was applied to fit the experimental kinetic data. The kinetics simulation study was performed using a computer program based on the proposed mathematical model and developed using gPROMS. As the two-mass transfer resistance approach was applied, two model parameters were fitted during the simulation study. External mass transfer and solid phase diffusion coefficients were obtained to predict the kinetic curves for varying initial Zn(II) concentration at constant agitation speed and constant adsorbent mass. For any particular Zn(II) - adsorbent system, k f was constant, except for the lowest initial concentration, while D s was found to increase with increasing initial Zn(II) concentration.

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