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Mostrando ítems 11-16 de 16
Remoción de arsénico del agua mediante irradiación solar
(Lima (Perú), 2003-07)
El Perú es un país con extensas zonas rurales donde los pobladores carecen de agua potable y utilizan para el consumo agua sin ningún control. La presencia de arsénico en aguas es tóxica y acumulativa trayendo consigo ...
Desinfección de agua mediante energía solar en un reactor tipo piscina
(Lima (Perú), 2006-07)
En este trabajo se muestran los estudios de desinfección y descontaminación solar de agua contenida en envases de plástico diseñados específicamente como un reactor que utiliza el efecto combinado de la banda ultravioleta-A ...
Synthesis and characterization of rough electrochromic phosphotungstic acid films obtained by spray-gel process
(Lima (Perú), 2003-07)
Rough electrochromic phosphotungstic acid (PWA) films were fabricated by spraying a gel of phosphotungstate anions with a molar ratio of P:W = 1:12 onto glass substrates precoated with transparent and electrically conducting ...
The influence of the ethanol/water molar ratio in the precursor solution on morphology and photocatalytic activity of pyrolytic ZnO films
(Lima (Perú), 2005-08)
Zinc oxide films were fabricated by a home made spray pyrolysis system equipped with an optical set-up ensuring the in-situ control of the film growth. 0.1 M of zinc acetate diluted in a mixture of ethanol and water was ...
Highly porous thin films obtained by spray-gel technique
(Lima (Perú), 2004-08)
Combining the spray pyrolysis and the sol-gel techniques (spray-gel) gives the possibility to produce very rough and highly diffuse films, under appropriate conditions. This technique is suitable for producing multifunctional ...
Highly porous tungsten-oxide-based films obtained by spray-gel for gas sensing applications
(Lima (Perú), 2005-08)
Highly porous mixed WO3–SnO2 films have been prepared from an aqueous solution of SnCl4.5H2O and polytungsten gel with a molar ratio of Sn/W from 0 to 1. These solutions were sprayed on to alumina substrates at 220 ºC. The ...