Browsing by Title Artículos de revistas
Now showing items 672-691 of 2801
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(Colegio de Farmacéuticos de la Provincia de Buenos Aires (Argentina), 1993)Se evalúa la biodisponibilidad absoluta de un comprimido de liberación controlada de teofilina desarrollado en nuestro laboratorio, el cual utiliza resinas acrílicas Eudagrit como sistema regulador de la cesión del fármaco ...
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(Real Academia de Farmacia, 1993)Este estudio utiliza un método cuantitativo para ensayar productos cosméticos como atenuadores de arrugas en la evaluación de una crema que contiene aceite de Rosa Mosqueta. El método usado en este estudio consiste, ...
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(Universidad de Santiago de Chile. Dirección de Investigaciones Científicas y Tecnológicas, 1983)Se estudia el comportamiento polarográfico de pesticidas organofosforados (Paratión y Dimetoato) y de pesticidas organoclorados (DDt, Aldrín y Dieldrin), estableciéndose para cada uno de ellos las condiciones óptimas de ...
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(Chile, Ministerio de Agricultura - Instituto de Investigaciones Veterinarias, 1952)La intención del presente trabajo. ha sido la valoración microbiológica de los aminoácidos esenciales contenidos en la proteína de la alfalfa (Medicago sativa): histadina, metionina, fenilalanina y lisina, los cuales ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2008-08-15)This work presents the development of analytical methodologies by UV spectrophotometry and HPLC to characterize five nitroarylbenzimidazole derivatives with activity against Trypanosoma cruzi: NB, BNB, PNB, PMNB and PCNB. ...
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(Sociedad Chilena de Quimica, 2014)© 2014, Sociedad Chilena de Quimica. All rights reserved.In this work are presented two methods for the simultaneous determination of 17α-ethinylestradiol (EEL) and chlormadinone acetate (CMA) by second order derivative ...
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(Elsevier Science Publishers B. V., 1997)Acid dissociation constants of α- and β-D-glucos-, mannos-, and galactos-ammonium ions have been determined from 1H NMR chemical shifts of the individual anomers in D2O. Values of pKa(D) for the α- and β-ammonium ions ...
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(2013)In this study, we investigated the potential antibacterial, antioxidant and anti-platelet activities and the inhibition of cholinesterase from the methanolic extracts obtained from aerial parts of the two species of Azorella: ...
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(ROYAL SOC CHEMISTRY, 2001)Two sensitive analytical atomic spectrometry methods, electrothermal atomic absorption spectrometry (ET-AAS) and hydride generation coupled to atomic fluorescence spectroscopy (HG-AFS), were optimized for determining total ...
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(Dove Medical, 2021)Purpose: The importance of studying polyphenolic compounds as natural antioxidants has encouraged the search for new methods of analysis that are quick and simple. The synthesis of silver nanoparticles (AgNPs) using plant ...
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(Sociedad Chilena de Quimica, 2013)As (III) was determined by differential pulse polarography (DPP) in 1 mol L-1 HCl as supporting electrolyte. For quantification, the -0.35 V peak (versus Ag/AgCl) was chosen. The obtained detection and quantification limits ...
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(SOCIEDAD CHILENA DE QUIMICA, 2003-03)A high performance thin layer chromatography (HPTLC) method for the determination of atrazine in aqueous soil extracts was studied. To verify the applicability of the method in environmental concern studies, soil samples ...
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(AOAC INTERNATIONAL, 2004-11)A new method for the sequential determination of attapulgite and nifuroxazide in pharmaceutical formulations by first- and second-derivative spectrophotometry, respectively, has been developed. In order to obtain the optimal ...
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(MDPI, 2021)Consumers' interest in foods that are nutritionally balanced and with health benefits has increased. The food industry is paying attention to the use of the ancestral seed Salvia hispanica L., commonly known as chia. At ...
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(2002)Thermal decomposition of 1,4-dimethylnaphthalene endoperoxide (DMNE) as a source of singlet oxygen was used to measure chemical rate constants, k(R), for reactions between singlet oxygen, O-2((1)Delta(g)), and various ...
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(2011)This work forms part of an investigation which seeks to determine metal complexes in a solid phase by photoacoustic spectrometry (PAS). Results of spectral determination of Co(II) complexes are introduced. The method is ...
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(2013)The microextraction of crystal violet (CV) from water samples into polydimethylsiloxane (PDMS) using the rotating disk sorptive extraction (RDSE) technique was performed. The extracting device was a small Teflon disk that ...
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(Wiley-VCH Verlag, 2014)© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.The assessment of the environmental fate of glyphosate and its degradation product (aminomethylphosphonic acid) is of great interest given the widespread use of the herbicide. ...
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(2013)Seven heavy polycyclic aromatic hydrocarbons (PAHs) of concern on the US Environmental Protection Agency priority pollutant list (benzo[a]anthracene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, dibenz[a,h ...
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(Taylor & Francis, 2016)A simple and green analytical method based on the use of rotating disk sorptive extraction is reported for the simultaneous determination of hormones in wastewater. The analytes were 17-estradiol, estriol, and 17 ...