This paper describes an experimental procedure recently developed to simulate and study the behaviour of various chemicals in seawater during their transfer in a 5 m deep water column. Since chemical pollution can be harmful to the environment, anticipating the evolution of a chemical spill is important for authorities, so that they can act rapidly and efficiently after a spill. In the case of ...

Awareness of the release kinetics active drugs is important in formulating that have desired delivery and predicting behaviour formulated drug vivo. The study aims to determine mechanism from griseofulvin tablets with different surfactants using mathematical models compare use graphs DD solver software fitting dissolution profiles kinetic models. batches P1 -P3 were composed surfactant - PEG 40...

Hexavalent chromium, Cr(VI), can be immobilized under neutral to alkaline conditions by reduction to Cr(III); similarly, the mobility of naturally occurring Cr in soils and sediments can be limited by its occurrence in the +III oxidation state. Conversely, the oxidation of Cr(IIi) to Cr(VI) increases both its toxicity and often its mobility. Dissolution of Cr-(OH)3(s) in 0.01 M NaNO3 suspension...

The internal microstructure of a tablet, such as pore geometry and volume, impacts the tablet’s disintegration kinetics. Ideally, one could design to control dissolution onset therapeutical performance immediate-release formulas; however, manufacturing tablets with desired can be challenging due interplay between formulation process parameters. Direct quantification tablet provide framework for...