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Ceramics from Villa El Salvador, a late formative site from the Central Coast of Perú
(Lima (Perú), 2007-08)
We applied a multielemental analytical method for characterization of archaeological ceramics from Villa El Salvador. The ceramics were characterize using Instrumental Neutron Activation Analyses (INAA), Energy-Dispersive ...
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 ...