Now showing items 1-6 of 6
Screening of Formulation Variables for the Preparation of Poly(epsilon-caprolactone) Nanocapsules Containing the Local Anesthetic Benzocaine
(Journal of Nanoscience and Nanotechnology, 2011-03-01) [Artigo]
In this work we describe the screening of four parameters in the preparation, by nanoprecipitation, of poly(epsilon-caprolactone) nanocapsules, used as a drug carrier system for the local anesthetic, benzocaine. A 2(4-1) ...
Controlled release system for ametryn using polymer microspheres: Preparation, characterization and release kinetics in water
(Journal of Hazardous Materials, 2011-02-28) [Artigo]
The purpose of this work was to develop a modified release system for the herbicide ametryn by encapsulating the active substance in biodegradable polymer microparticles produced using the polymers poly(hydroxybutyrate) ...
Paraquat-loaded alginate/chitosan nanoparticles: Preparation, characterization and soil sorption studies
(Journal of Hazardous Materials, 2011-06-15) [Artigo]
Agrochemicals are amongst the contaminants most widely encountered in surface and subterranean hydrological systems. They comprise a variety of molecules, with properties that confer differing degrees of persistence and ...
Poly(hydroxybutyrate-co-hydroxyvalerate) microspheres loaded with atrazine herbicide: screening of conditions for preparation, physico-chemical characterization, and in vitro release studies
(Polymer Bulletin, 2011-07-01) [Artigo]
Due to their widespread use in agriculture as well as in urban areas, agricultural chemicals are globally some of the most commonly encountered substances in waters. The objective of this study is to develop (including ...
Determination of labile inorganic and organic species of Al and Cu in river waters using the diffusive gradients in thin films technique
(Analytical and Bioanalytical Chemistry, 2011-03-01) [Artigo]
The diffusive gradients in thin films (DGT) technique, using a diffusive gel or a restrictive gel, was evaluated for the determination of labile inorganic and organic species of Al and Cu in model synthetic solutions and ...
Poly(Lactide-co-Glycolide) Nanocapsules Containing Benzocaine: Influence of the Composition of the Oily Nucleus on Physico-Chemical Properties and Anesthetic Activity
(Pharmaceutical Research, 2011-08-01) [Artigo]
The aim of this work was to investigate the influence of the oily nucleus composition on physico-chemical properties and anesthetic activity of poly (lactide-co-glycolide) nanocapsules with benzocaine.Nanocapsules containing ...