Now showing items 1-10 of 51
Characterization of tetracaine: cyclodextrin inclusion complexes by nuclear magnetic resonance
(European Biophysics Journal With Biophysics Letters, 2011-08-01) [Resumo]
Characterization of the Interactions between Endocrine Disruptors and Aquatic Humic Substances from Tropical Rivers
(Journal of the Brazilian Chemical Society, 2011-01-01) [Artigo]
Interactions between two endocrine disruptors (ED) and aquatic humic substances (AHS) from tropical rivers were studied using an ultrafiltration system equipped with a 1 kDa cut-off cellulose membrane to separate free ED ...
Micro and nanosystems for delivering local anesthetics
(Expert Opinion on Drug Delivery, 2012-12-01) [Resenha]
Introduction: One of the most common strategies for pain control during and after surgical procedures is the use of local anesthetics. Prolonged analgesia can be safely achieved with drug delivery systems suitably chosen ...
Development and pharmacological evaluation of ropivacaine-2-hydroxypropyl-beta-cyclodextrin inclusion complex
(European Journal of Pharmaceutical Sciences, 2008-01-01) [Artigo]
Ropivacaine (RVC) is an enantiomerically pure local anesthetic (LA) largely used in surgical procedures, which presents physico-chemical and therapeutic properties similar to those of bupivacaine (BPV), but associated to ...
Fecal Sterols in Estuarine Sediments as Markers of Sewage Contamination in the Cubatao Area, São Paulo, Brazil
(Aquatic Geochemistry, 2012-09-01) [Artigo]
Sterol biomarkers serve as an alternative method for detecting sewage pollution. Sterols were extracted from samples of surface sediment collected in Cubato (the Vila dos Pescadores and Vila Esperan double dagger a ...
Development of a method to determine Ni and Cd in biodiesel by graphite furnace atomic absorption spectrometry
(Fuel, 2011-01-01) [Artigo]
This paper proposes a low cost, simple, fast method for determining Ni and Cd in biodiesel samples by graphite furnace atomic absorption spectrometry (GFAAS). The method was evaluated in biodiesel from different sources. ...
Alternatives for the Treatment of Schistosomiasis: Physico-Chemical Characterization of an Inclusion Complex Between Praziquantel and Hydroxypropyl-beta-Cyclodextrin
(Latin American Journal of Pharmacy, 2010-11-01) [Artigo]
"Alternatives for the Treatment of Schistosomiasis: Physico-Chemical Characterization of an Inclusion Complex Between Praziquantel and Hydroxypropyl-beta-Cyclodextrin". Praziquantel (PZQ) is the drug of choice commonly ...
Adsorption and release of micronutrients by humin extracted from peat samples
(Journal of the Brazilian Chemical Society, 2013-06-20) [Artigo]
The objective of this work was to investigate the adsorption of micronutrients in humin and to verify the ability to release these elements in water. The first step was to determine the adsorption capacity of humin for ...
Chitosan nanoparticles loaded the herbicide paraquat: The influence of the aquatic humic substances on the colloidal stability and toxicity
(Journal Of Hazardous Materials, 2015-04-09) [Artigo]
Polymeric nanoparticles have been developed for several applications, among them as carrier system of pesticides. However, few studies have investigated the fate of these materials in the environment in relation to colloidal ...
THE EFFECT of ANIONIC SORPTION on THE METAKAOLINITE
(Advanced Powder Technology Vii, 2010-01-01) [Trabalho apresentado em evento]
This paper reports an investigation on the effect of thermal activation of kaolinite. It is well known that during calcinations (400-650 degrees C), kaolinite loses the OH lattice water and is transformed into metakaolinite ...