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Itens para a visualização no momento 1971-1980 of 2729
Efeito hall extraordinário em multicamadas granulares de SiO2/Co/CoO com exchange bias
(Universidade Federal de Santa Maria, 2012-07-27)
Granular magnetic systems can be composed by magnetic particles or clusters with size of some
nanometers. These magnetic nanoparticles present different magnetic order phases, as superparamagnetic,
and they can be embedded ...
Avaliação mimética da atividade catalítica da superóxido dismutase e efeitos citotóxicos de complexos de cobre derivados de aminas de furanos e tiofenos.
(Universidade Federal de Santa Maria, 2019-06-19)
This work evidences the synthesis, characterization, evaluation of superoxide dismutase mimetic catalytic activity, and cytotoxic effects of copper complexes.
The complexes were obtained from aldol condensation between ...
Multicamadas de NiFe/FeMn com potencial de aplicação como sensores a altas frequências
(Universidade Federal de Santa Maria, 2016-02-12)
In this work we investigated the magnetization process and the magnetoimpedance in samples exhibiting exchange bias. Ni81Fe19=Fe50Mn50=T a bilayers and multilayers where
grown onto glass substrates. The exchange bias was ...
Estudos de primeiros principios de nanocones de BN com 240º de disclinacão: uma nova proposta
(Universidade Federal de Santa Maria, 2005-08-19)
In this Thesis we investigate several possibilities for the cap closure mechanism of
the 240o disclination boron-nitride nanocones through the energetics and structural
analisys. Several cones' terminations were studied, ...
Alcalóides ciclopeptídicos da espécie Discaria americana gilles and hooker: estereoquímica e atividade antimicrobiana
(Universidade Federal de Santa Maria, 2013-08-02)
The purpose of this study was to conduct a phytochemical study of the crude extract of the root bark of the species Discaria americana Gilles and Hooker. The origin of this knowledge has been proposed the use of this plant ...
Modelagem e etnomodelagem matemática: desenvolvendo um projeto em uma escola de ensino fundamental de Itaara
(Universidade Federal de Santa Maria, 2011-08-12)
This work was done in order to make use of mathematical modeling as an
alternative to the teaching and learning of mathematics and offer a greater
interaction with the ethnomathematics, paying attention to the knowledge ...
Avaliação do impacto do algoritmo de atribuição de demanda nos ganhos dos taxistas
(Universidade Federal de Santa Maria, 2022-05-10)
Taxi is a well-established service and allows the customer to take advantage of the mobility
service without being directly encumbered by vehicle related costs. The service provider is
responsible for vehicle maintenance, ...
Síntese de 1-alquil-4-aminoalquil-2-trifluormetil-1H-pirróis e 1,2,3- triazóis derivados
(Universidade Federal de Santa Maria, 2020-12-04)
In the present work, it was carried out a study of the reactivity of 5-bromo-1,1,1-trifluoro-
4-methoxypent-3-en-2-one (5-bromo enone) towards primary aliphatic amines, which furnishes
as products two novel series of ...
Densidade urbana e populacional e seus efeitos multitemporais na cidade de Cascavel/PR
(Universidade Federal de Santa Maria, 2012-03-28)
This work compares the urban growth, between the years of 1995 and 2006, with the population evolution of the demographic censuses, carried through between the years of 2000 and 2010. The delimitation and classification ...
Detecção elétrica da ressonância ferromagnética em filmes finos de NiFe/FeMn
(Universidade Federal de Santa Maria, 2018-07-20)
Devices based on effects that generate a dc voltage in ferromagnetic ressonance (FMR)
condition are of great interest for broadband communication applications, since they allow
the rectification of radio frequency signals ...