Buscar
Mostrando ítems 1-10 de 24
Screen-printed carbon electrode modified with poly-L-histidine applied to voltammetric determination of chromium (VI)
(2006-12-01)
The present work reports the use of a screen-printed carbon electrode (SPCE) modified by poly-L-histidine film to determine chromium (VI). Stable films can be formed by direct addition of PH solution 1 % (w/v) on the ...
Toxic and genotoxic effects of trivalent and hexavalent chromium - A review
(2005-06-01)
During the last years, the emission of heavy metals to the environment has increased, causing a severe negative impact to the ecosystems and seriously compromising human health due to their mutagenic potential. Tri- (III) ...
El uso de juegos para el aprendizaje adulto en la clase de inglés como lengua extranjera
(2015-08)
Este trabajo pretende facilitar algunos insumos sobre el uso de juegos como técnica didáctica para el aprendizaje adulto de una lengua extranjera, en este caso, el idioma inglés. Los juegos han sido empleados desde tiempos ...
Lead And Chromium Biosorption By Pistia Stratiotes Biomass
(Italian Association of Chemical Engineering - AIDIC, 2013)