The aim of the present study was to make a fenofibrate (FNB) nanocrystal (NC) by wet media milling, characterizations and formulates into oral strip-films (OSFs). Mechanical properties, redispersion study, and solid-state characterizations results suggested that reduction of drug crystal size at nanoscale and incorporation into OSFs does not affect the solid-state properties of the drug. In vit...

The main objective of this work was to use Weibull distribution function and Baker-Lonsdale models to study the dissolution kinetics of prepared binary and ternary interactive mixtures containing indomethacin in comparison with three commercially available capsules of indomethacin, namely, Rothacin®, Indomin® and Indylon®. Differential scanning calorimetry (DSC) in conjunction with cloud point ...

During the past 50 years, quartz dissolution kinetics and solubility measurements have been the subject of numerous investigations. Researchers have been motivated either because of their interest in understanding important natural geologic processes in the earth or because of a need to quantify dissolution rates for chemical processes above ground or for geothermal heat extraction underground....

Dissolution of calcite in the presence of phosphate solutions was studied in situ by Atomic Force Microscopy. Results of experiments in slightly alkaline (NH4)2HPO4 solutions showed that dissolution, measured from etch pit spreading, is significantly reduced compared to that observed in pure deionized water, confirming an inhibitory effect of (NH4)2HPO4 on calcite dissolution. However, rates me...

In the present study, asymmetric membrane capsules (AMCs) with two compartments were successfully developed for simultaneous delivery of two poorly water-soluble drugs, Atenolol and Amlodipine Besylate, by using solubility modulation approach. Scanning electron microscopy (SEM) before dissolution showed presence of outer dense region and inner porous region for the prepared asymmetric membrane ...

Thecosome pteropods are abundant upper-ocean zooplankton that build aragonite shells. Ocean acidification results in the lowering of aragonite saturation levels in the surface layers, and several incubation studies have shown that rates of calcification in these organisms decrease as a result. This study provides a weight-specific net calcification rate function for thecosome pteropods that inc...

Dissolution kinetics of zinc oxide (ZnO) powders used as feed additives for supplementation in diet animals is studied relation to the powder physicochemical characteristics. The fundamental issue discrimination reaction-limited or diffusion-limited dissolution into a stirred liquid medium addressed. Relationships between and properties are investigated set 34 ZnO samples various origins. A pri...

The current low-cost process for mineral carbonation involves the direct carbonation of a slurry of magnesium or calcium silicate mineral with supercritical CO2. The process is currently limited by the slow reaction kinetics of the carbonation reactions, and in particular the slow dissolution rates of the silicates in weakly acidic conditions. Enhancing the dissolution rate in weakly acidic con...

Aqueous Zinc Batteries In article number 2301770, Yueliang Gu, Xiaochuan Ren, Daming Zhu, Jianxin Zou, and co-workers elucidate the reaction mechanism of Mn2+ electrolyte additives in aqueous zinc batteries (ZIBs) via operando synchrotron X-ray diffraction, ex situ absorption spectroscopy electrochemical analyses. A reversible Mn2+/MnO2 deposition/dissolution occurred at cathode, which change e...

The kinetic behavior of Zircaloy-4 tube samples was examined during high temperature steam oxidation in order to propose a mechanism with detailed elementary steps. study revealed that and hydrogen partial pressures have no effect on the reaction kinetics. Based these experiments, model established herein takes into account oxide growth oxygen dissolution metal. A rate-determining step diffusio...