Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Luiza de Castro Folgueras"'
Autor:
Valdirene Aparecida Silva, Luiza de Castro Folgueras, Geraldo Maurício Cândido, Adriano Luiz de Paula, Mirabel Cerqueira Rezende, Michelle Leali Costa
Publikováno v:
Materials Research, Vol 16, Iss 6, Pp 1299-1308 (2013)
Nanostructured polymer composites have opened up new perspectives for multifunctional materials. In particular, carbon nanotubes (CNTs) present potential applications in order to improve mechanical and electrical performance in composites with aerosp
Externí odkaz:
https://doaj.org/article/8b6de197f398474d83de6a92c3fd63f6
Publikováno v:
Materials Research, Vol 13, Iss 2, Pp 197-201 (2010)
The aim of this study was to produce sheets of microwave absorbing materials using conductive polyaniline dispersed in a silicone rubber matrix and to characterize the electromagnetic properties (absorption, transmission and reflection of electromagn
Externí odkaz:
https://doaj.org/article/84df2c683629435b9014bfb85dcf9572
Publikováno v:
Materials Research, Vol 11, Iss 3, Pp 245-249 (2008)
This study shows the processing of radar absorbing multilayer structures based on nonwoven substrates of polyacrylonitrile and poly (ethylene terephthalate) impregnated with a polyaniline and polyurethane mixture. Processed materials with different p
Externí odkaz:
https://doaj.org/article/c1daff80fd0447f995008b945ae73431
Publikováno v:
Materials Research, Vol 10, Iss 1, Pp 95-99 (2007)
It is a known fact that the adequate combination of components and experimental conditions may produce materials with specific requirements. This study presents the effect of carbon fiber fabric impregnation with polyaniline conducting polymer aiming
Externí odkaz:
https://doaj.org/article/09dfd5fe00b848f5bf67d4245edf9b58
Autor:
Luiza de Castro Folgueras
Publikováno v:
Biblioteca Digital de Teses e Dissertações do ITAInstituto Tecnológico de AeronáuticaITA.
Considerando o potencial uso dos polímeros condutores como Materiais Absorvedores de Radiação Eletromagnética (MARE), na faixa de microondas, vários estudos têm sido realizados. Dentre as principais características desses polímeros destacam-s
Autor:
Luiza de Castro Folgueras
Publikováno v:
Biblioteca Digital de Teses e Dissertações do ITAInstituto Tecnológico de AeronáuticaITA.
O objetivo deste trabalho foi estudo da influencia de misturas de oxido de neodimio e de oxido de niobio e de praseodimio como sinterizacao para o nitreto de silicio. Amostras foram sinterizadas em temperaturas entre ';1600GRAUS';C a ';1750 GRAUS';C,
Autor:
Marcele A. Hocevar, Ana Paula Silva de Oliveira, Fabio Roberto Passador, Maurício Ribeiro Baldan, Larissa Stieven Montagna, Thaís Larissa do Amaral Montanheiro, Ana Paula Lemes, Mirabel Cerqueira Rezende, Marcelo Alexandre de Farias, Luiza de Castro Folgueras
Publikováno v:
Advanced Materials Letters. 9:499-504
Publikováno v:
Advanced Materials Research. 1135:104-111
The knowledge of how to process composite materials and combine them with radiation absorbing centers, using different components, additives and polymer matrices with suitable electromagnetic properties (dielectric constant and tangent loss), allows
Autor:
Inácio M. Martin, Alessandro De Abreu, Luiza de Castro Folgueras, Mauro A. Alves, Ricardo E. G. da Silva
Publikováno v:
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC).
As a consequence of their large size and surface geometry, military transport helicopters have usually large radar cross sections (RCS). Depending on the type of the mission these helicopters are carrying, it would be advantageous for the helicopter
Measurements of extremely low frequency waves (1–12 Hz) produced by ionospheric high-frequency waves
Autor:
Alessandro De Abreu, Inácio M. Martin, Mauro A. Alves, Marcelo Pego Gomes, Luiza de Castro Folgueras
Publikováno v:
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC).
In a recent study, a process for the generation of Extremely Low Frequency (ELF) waves in the range of 1–12 Hz produced by diamagnetic currents generated by heat in ionosphere by high frequency (HF) waves has been proposed. HF waves that reach the