In this study, molecular simulation is utilized to explore the charge effect in COF membranes on separation performance. Three types of with different functional groups (Tp-Tta-COOH, Tp-Tta-COO − and Tp-Tta-NH 3 + ) thus charges are designed. It found that positively charged membrane (Tp-Tta-NH shows higher ion selectivity mixed Li /Mg 2+ solution, compared negatively neutral membranes. membran...

From a deep eutectic mixture consisting of trimethylammonium chloride (TMACl) and oxalic acid, two templated zirconium phosphates, ZrPOF-TMA1 with 8- and 10-ring pore channels as well as ZrPOF-TMA2 with 7- and 8-ring pore channels, have been synthesized. A low P/Zr ratio is necessary for ZrPOF-TMA1, and higher P/Zr ratios tend to form ZrPOF-TMA2, but the former cannot be obtained by templating ...

The severity of the incidents of recreational boats in Spain during 2011 is analyzed in terms of the region in which the crafts were registered. The data was obtained and coded from the damage reports of one of the main Spanish marine surveyors, source that has been used for the first time to our knowledge in the academic literature. About 1400 incidents are statistically compared in terms of l...

La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) powders with different particle sizes, synthesized through a citrate complexation method and a gel-casting technique, are used to fabricate porous LSCF cathodes with graded microstructures via tape casting. To create porous electrodes with desired porosity and pore structures, graphite and starch are used as pore former for different layers of the graded cathode....

A continuum nonlinear diffusion model is developed to describe molecular transport in ordered porous media. An existing generic van der Waals equation of state based free volume theory of binary diffusion coefficients is modified and introduced into the two-dimensional diffusion equation. The resulting diffusion equation is solved numerically with the alternating-direction fully implicit method...

The paper analyzes a proposed scheme of decontamination of radionuclides from concrete structures, in which rapid microwave heating is used to spall off a thin contaminated surface layer. The analysis is split in two parts: ~1! the hygrothermal part of the problem, which consists in calculating the evolution of the temperature and pore pressure fields, and ~2! the fracturing part, which consist...

BACKGROUND AND AIMS Felodipine is a dihydropyridine calcium antagonist that presents good characteristics to be formulated as prolonged release preparations. The aim of the study was the formulation and in vitro characterization of a reservoir type prolonged release system with felodipine, over a 12 hours period using the Simplex method. METHODS The first step of the Simplex method was to stu...

Asymmetric membrane capsules (AMCs) are one of the novel osmotic delivery devices which deliver a wide range of drugs in controlled manner. In the present work, we developed and validated a semiautomatic process by fabricating a hydraulic assisted bench top model for manufacturing AMCs. The capsule walls of AMCs were prepared by dip coating phase inversion process using cellulose acetate butyra...