Buscar
Mostrando ítems 1-10 de 242
Doping of polyaniline and derivatives induced by X-ray radiation
(1997-01-01)
Thin films of chemically synthesized polyaniline and poly(o-methoxyaniline) were exposed to ionizing X-ray radiation and characterized by radiation induced conductivity measurements, ultraviolet-visible spectroscopy, ...
Doping of polyaniline and derivatives induced by X-ray radiation
(1997-01-01)
Thin films of chemically synthesized polyaniline and poly(o-methoxyaniline) were exposed to ionizing X-ray radiation and characterized by radiation induced conductivity measurements, ultraviolet-visible spectroscopy, ...
Investigação numérica da convecção natural e da radiação térmica em cavidade aberta preenchida com meio poroso heterogêneo
(Universidade Tecnológica Federal do ParanáCuritibaBrasilGraduação em Engenharia MecânicaUTFPR, 2015-11-20)
In an attempt to improve the heat exchange in thermal systems, several studies have been conducted on natural convection in heterogeneous porous media. The majority of them have in common the hypothesis of negligible heat ...
Investigation of temperature influence on photo-induced conductivity in n-type AlxGa1-xAs
(1998-12-01)
We present conductance as function of temperature (G×T) under influence of monochromatic light in the range 0.5-1.5 μm for direct as well as indirect bandgap n-type AlxGa1-xAs. Results obtained below 60 K in indirect bandgap ...
Investigation of temperature influence on photo-induced conductivity in n-type AlxGa1-xAs
(1998-12-01)
We present conductance as function of temperature (G×T) under influence of monochromatic light in the range 0.5-1.5 μm for direct as well as indirect bandgap n-type AlxGa1-xAs. Results obtained below 60 K in indirect bandgap ...
Exposição ocupacional às radiações ionizantes durante cirurgias ortopédicas guiadas fluoroscopicamente
(Universidade Tecnológica Federal do ParanáCuritibaPrograma de Pós-Graduação em Engenharia Elétrica e Informática Industrial, 2012-02-16)
Radiology has been considered one of the areas of medicine that most devel-ops, especially with the contribution of new technologies. Among the applications of Interventional Radiology highlights the use of fluoroscopy in ...
Effects of gamma radiation absorbed dose on VBC grafting onto LDPE films and on anion exchange membrane fuel cells performance
(International Atomic Energy Agency (IAEA), 2023)
In situ Responses of Phytoplankton from the Subtropical Lake La Angostura (Tucumán, Argentina) in Relation to Solar Ultraviolet Radiation Exposure and Mixing Conditions
(Springer, 2006-04)
In situ experiments were conducted at various depths in the water column to determine the effects of solar ultraviolet radiation (UVR, 280–400 nm) on photosynthesis of natural phytoplankton assemblages from the subtropical ...