Buscar
Mostrando ítems 31-40 de 68
Photoelectrochemical processes at interfaces of nanostructured TiO 2/carbon black composites studied by scanning photoelectrochemical microscopy
(2007)
The local photoelectrochemical response of TiO 2/carbon black photocatalysts was studied by means of scanning photoelectrochemical microscopy performed under UV illumination and external polarization. Catalysts obtained ...
Segmentation of color images by chromaticity features using self-organizing maps
(Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ingeniería, 2016-05-01)
Usually, the segmentation of color images is performed using cluster-based methods and the RGB space to represent the colors. The drawback with these methods is the a priori knowledge of the number of groups, or colors, ...
Photoelectrochemical processes at interfaces of nanostructured TiO 2/carbon black composites studied by scanning photoelectrochemical microscopy
(2007)
The local photoelectrochemical response of TiO 2/carbon black photocatalysts was studied by means of scanning photoelectrochemical microscopy performed under UV illumination and external polarization. Catalysts obtained ...
Estudo sobre o sistema de iluminação das áreas de circulação de uma edificação hospitalar
(Universidade Federal de Santa MariaBrasilUFSMCentro de Tecnologia, 2021-01-29)
This paper presents a case study about the lighting system of the circulation areas of a hospital. As a reference for this work, the activities were developed at the Universitary Hospital of Santa Maria (HUSM). Were analyzed ...
Segmentation of color images by chromaticity features using self-organizing maps
(Universidad Nacional de Colombia, 2016)
Aplicação de óptica geométrica na síntese de antenas duplo-refletoras offset e de lentes dielétricas sem simetria circular
(Universidade Federal de Minas GeraisBrasilENG - DEPARTAMENTO DE ENGENHARIA ELÉTRICAPrograma de Pós-Graduação em Engenharia ElétricaUFMG, 2020-05-29)
This work investigates an alternative numerical procedure for the solution of an exact formulation based on Geometrical Optics (GO) principles to the synthesis of offset dual reflector antennas and dielectric lenses without ...
Diameter increment patterns among 106 tree species in a logged and silviculturally treated Costa Rican rain forest
(Centro Agronómico Tropical de Investigación y Enseñanza (CATIE), 1990)
Studies of growth rates of trees in managed neotropical forests have rarely employed complete botanical identification of all species, while published information for Central american lowland rain forests largely concerns ...