Buscar
Mostrando ítems 1-10 de 148
Comparative cyclic voltammetry and SEM analysis of tin electrodes in citrate buffer solutions
(Elsevier Science Sa, 2007-03)
The anodic oxidation of tin in citrate buffer solutions has been studied by cyclic voltammetry and scanning electron microscopy. In order to identify each individual process, a numerical method was used to resolve into ...
Effects of biological buffer solutions on the peroxidase-like catalytic activity of Fe3O4 nanoparticles
(Royal Society of Chemistry, 2019-09-23)
Iron oxide nanoparticles (IONPs) are frequently used in biomedical applications due to their magnetic properties and putative chemical stability. Nevertheless, their well-known ability to mimic some features of the peroxidase ...
FCS experiments to quantify Ca2+ diffusion and its interaction with buffers
(American Institute of Physics, 2017-03)
Ca2+ signals are ubiquitous. One of the key factors for their versatility is the variety of spatio-temporal distributions that the cytosolic Ca2+ can display. In most cell types Ca2+ signals not only depend on Ca2+ entry ...
Uso de pretratamiento y nuevo buffer para optimizar la producción de hidrógeno biológicoUse of pretreatment and new buffer to optimize the production of biological hydrogen
(Executive Business School, 2017-07)
El objetivo de este trabajo es optimizar la producción de hidrógeno biológico por fermentación oscura a partir de cultivos bacterianos mixtos, utilizando glucosa como fuente de carbono. Para ello se evaluó el efecto en ...
Effect of temperature on the chromatographic retention of ionizable compounds: II. Acetonitrile–water mobile phases
(Elsevier Science, 2005-06)
The retentive behavior of weak acids and bases in reversed-phase liquid chromatography (RPLC) upon changes in column temperature has been theoretically and experimentally studied. The study focuses on examining the temperature ...
Effect of temperature on acidebase equilibria in separation techniques: a review
(Elsevier Science, 2015-08)
Studies on the theoretical principles of acid–base equilibria are reviewed and the influence of temperature on secondary chemical equilibria within the context of separation techniques, in water and also in aqueous-organic ...
An accurate UV/visible method to quantify proteins and nzymes:Impact of aggregation, buffer concentration and the nature of the standard
(Research Trends, 2011-10)
A simple, fast and low cost UV/visible based method to quantify proteins or enzymes is presented. This method avoids some drawbacks found using conventional techniques. Representative proteins and enzymes such as bovine ...
Determination of sulfonylureas in cereal samples with electrophoretic method using ionic liquid with dispersed carbon nanotubes as electrophoretic buffer
(Elsevier, 2013-08-08)
A capillary electrophoresis method to determine four sulfonylureas in grain samples was developed using 10 mM of 1-butyl-3-methyl imidazolium tetrafluoroborate (bmin BF4) as electrophoretic buffer solution. 2 mg L 1 of ...
Anodic ph distribution analysis during electrochemical treatment of tumors: numerical simulations
(Asociación Argentina de Mecánica Computacional, 2007-12)
Electrochemotherapy (EChT) of tumors consists in the passage of a direct electric current through electrodes inserted locally in the tissue, mainly causing its necrosis. This kind of treatment has been specially applied ...
Electron transfer across anodic films formed on tin in carbonate-bicarbonate buffer solution
(Pergamon-Elsevier Science Ltd, 2005-01)
Impedance and steady-state data were recorded in order to study the kinetics of electron transfer between passive tin electrodes and an electrolytic solution containing the K3Fe(CN)6-K 4Fe(CN)6 redox couple. Film thickness ...