In this study, febantel was dissolved under increased temperature in a nonionic surfactant Lutrol L44® and subsequently mixed into an aqueous maltodextrin solution. After 8h under static conditions, coacervation or phase separation took place. (1)H NMR spectra and HPLC analysis showed that the upper phase contained mainly all febantel, while no febantel was detected in the lower phase. Fluoresc...

We report in-situ spectroscopic measurements of the structure and orientation of molecules in the interfacial region between the semi-soluble ionic solid CaF2 (fluorite) and an aqueous phase. This paper integrates a series of new experiments with earlier results to give a comprehensive understanding of this very dynamic interface. We employ the surface specific technique, vibrational sum-freque...

The objective of this work is to use Direct Monte Carlo techniques in simulating drug delivery from compacts of complex composition, taking into consideration the special features of the dissolution in vitro environment. The paper focuses on simulating a binary system, consisting of poorly-soluble drug, dispersed in a matrix of highly-soluble acid excipient. At dissolution, the acid excipient d...

Inorganic fertilizers have impacts on the availability of nutrients and content organic matter in soil, as well its native microbiota. A turmeric fertilizer (TF) with added food residues wood ashes was developed to evaluate effects tomato production crop soil properties. The TF prepared by emulsion technology using three concentrations expressed 1.0, 2.5 3.0 % w/v; it characterized according rh...

This study presents a special problem on vertical distribution for sediment and copper in hyper-concentrated turbulent solid-liquid system that is essentially different from the ordinary low-concentrated turbulent system. A resonance type turbulent simulation equipment is used for the experimental study in which a vertically uniform turbulent field of the mixture of loess and water is produced ...

Solid dispersions in water-soluble carriers have attracted considerable interest as a means of improving the dissolution rate, and hence possibly bioavailability, of a range of hydrophobic drugs. The poor solubility of carvedilol leads to poor dissolution and hence variation in bioavailability. The purpose of the present investigation was to increase the solubility and dissolution rate of carve...