lipoxygenase(lox) catalyzes irreversible transfer of oxygen molecule to arachidonic and linoleic acid to produce 13 hydroproxy octadecadienoic acid. recent studies showed the involvement of lipoxygenase products, leukotrienes, in inflammations and lipoxygenase pathways acts as mediators of early inflammatory events in atherosclerosis. the aim of the present study was purification and characteri...

Polysulfone-based mixed matrix membranes (MMMs) incorporated with silica nanoparticles are a new generation material under ongoing research and development for gas separation. However, the attributes of better-performing MMM cannot be precisely studied experimental conditions. Thus, it requires an atomistic scale study to elucidate separation performance silica/polysulfone MMMs. As most work em...

Mixed-matrix membranes (MMMs) are that composed of polymers embedded with inorganic particles. By combining the fillers, improvements can be made to permeability compared pure polymer due new pathways for gas transport. However, such as hyper cross-linked (HCP), also help reduce physical aging MMMs a glassy matrix. Here we report synthesis two novel HCP based on Friedel–Crafts reaction between ...

this paper discusses different important gas permeation models such as “maxwell”, “bruggeman”, “lewis-neilson”, and “pal” models to predict “mixed matrix membranes” (mmms) performance. the main parameter considered and discussed is the permeability of hydrogen on carbon nanotubes (cnts)-mmm. for evaluation of the theoretical models, experimental data of permeability for h2 were compared to the ...

The separation of small molecule gases by membrane technologies can help performance enhancement and process intensification for emerging advanced fossil energy systems with CO2 capture capacity. This paper reports the demonstration of controlled modification of zeolitic channel size for the MFI-type zeolite membranes to enhance the separation of small molecule gases such as O2 and N2. Pure-sil...

comNode classification within Membrane Residue Curves (M-RCMs) currently hinges on Lyapunov’s Theorem and therefore the computation of mathematically complex eigenvalues. This paper presents an alternative criterion for the classification of nodes within M-RCMs based on the total membrane flux at node compositions. This paper demonstrates that for a system exhibiting simple permeation behaviour...

Molecular transport through biological membranes occurs in a range of interesting processes. To understand basic permeation functions of a biomembrane, we have carried out molecular dynamics (MD) simulations using dipalmitoylphosphatidylcholine (DPPC) as the bilayer membrane. By reducing the degrees of freedom and employing suitable potentials, a coarse-grained (CG) model can provide direct ins...

Concretes used in marine environment are generally under the cyclic effect of CO2 and chloride ions (Cl -). To date, the influence of carbonation on ingress of chloride ions in concretes has been widely studied; in comparison, study on the influence of Clon the progress of carbonation is limited. During the study, concretes were exposed to independent and combined mechanisms of carbonation and ...

Carbon membranes are a potentially attractive candidate for the in-situ removal of water vapor in CO2 hydrogenation reactions. Their hydrophilicity and pore structure can be tuned by properly adjusting synthesis procedure. Herein, we assess effect carbonization temperature (450–750 °C) on performance supported CMSM terms vapor/gas separation, correlation with changes their surface functionality...