Results 81 to 90 of about 140,762 (162)
Guia de material volumètric en laboratoris de Química Analítica [PDF]
, 2015 Aquesta guia presenta els diferents tipus de material volumètric usat habitualment en un laboratori de Química Analítica, i descriu els esquemes generals de les volumetries de la pesada a la ...
Subirats i Vila, Xavier
core
High-throughput screening assay used in pharmacognosy: Selection, optimization and validation of methods of enzymatic inhibition by UV-visible spectrophotometry [PDF]
Journal of Pharmacy & Pharmacognosy Research, 2014 In research laboratories of both organic synthesis and extraction of natural products, every day a lot of products that can potentially introduce some biological activity are obtained.
Graciela Granados-Guzmán +3 more
doaj
Amperometric biosensor for ascorbic acid
Eclética Química, 2018 A L-ascorbic acid biosensor based on ascorbate oxidase has been developed. The enzyme was extracted from the mesocarp of cucumber (Cucumis sativus) by using 0.05 mol L -1 phosphate buffer, pH 5.8 containing 0.5 mol L -1 NaCl.
Inês N. Tomita +3 more
doaj +1 more source
Elaboració d'una llibreta de laboratori [PDF]
, 2012 Material docent d'auto aprenentatge de com elaborar adequadament una llibreta de laboratori de química ...
Bagán Navarro, Héctor
core
Eclética Química, 2018 The combination of two low-cost classical procedures based on titrimetric techniques is presented for the determination of pyridoxine hydrochloride in pharmaceuticals samples.
Thiago de Almeida Drumond dos Santos +3 more
doaj +1 more source
Superoxide and hydrogen peroxide productions by NO-inhibited complex III [PDF]
, 2016 Complex III plays a central role in the mitochondrial respiratory chain transferring electrons from ubiquinol to cytochrome c and pumping protons to the intermembrane space, contributing to the protonmotive force.
Bombicino, Silvina Sonia +3 more
core
A new method for the preparation of biocompatible silica coated-collagen hydrogels [PDF]
, 2013 Silica-collagen scaffolds were obtained by covalent binding of an aminosilane to glutaraldehyde fixed collagen hydrogels, rendering a three dimensional network of silicon coated collagen fibrils.
Alvarez, Gisela Solange +7 more
core +2 more sources
Importancia de la calibración en los laboratorios de química analítica [PDF]
, 1999 La química analítica tiene como finalidad el estudio de la composición química de una muestra, mediante métodos de laboratorio analíticos. En cualquier laboratorio de química analítica, el objetivo principal es obtener resultados fiables y consistentes ...
Espejo Cuadrado, Manuel
core +1 more source
Guia per als càlculs previs en laboratoris de Química Analítica [PDF]
, 2015 Aquest document és una guia per a la realització dels càlculs previs en determinacions gravimètriques i ...
Subirats i Vila, Xavier
core
Dual antibacterial effect of immobilized quaternary ammonium and aliphatic groups on PVC [PDF]
, 2015 A coating comprising quaternary ammonium salts (QAS) and aliphatic moieties was formed on the poly(vinyl chloride) (PVC) surface in order to confer antibacterial activity. This was achieved by grafting mercaptopropyltrimethoxysilane onto PVC, followed by
Copello, Guillermo Javier +4 more
core +1 more source