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Existência e configuração de ciclos limites em sistemas diferenciais planares
(Universidade Federal de Santa Maria, 2018-03-16)
In this dissertation, we present results on the existence of limit cycles in planar differential
systems, configuration of such cycles and the dynamics of nonlinear systems near periodic
orbits.
Investigação de metabólitos secundários de Tabernaemontana catharinensis A. DC. – (Apocynaceae) e suas potenciais atividades antimicrobianas
(Universidade Federal de Santa Maria, 2018-07-17)
The phytochemical investigation of hexane and methanolic crude extracts and their fractions from the
bark of the stem of Tabernaemontana catharinensis (Apocynaceae, commonly known as cobrina) led
to the isolation of nine ...
Identificação do comportamento do pastejo em ruminantes através do uso de filtros digitais baseados em análise espectral
(Universidade Federal de Santa Maria, 2015-10-01)
This work presents the conception of a system that allows the obtainment of information that may help to improve the feeding system used by livestock farmers, enabling a production increasing and herd health conservation, ...
Abordagem colaborativa para gerenciamento de riscos de segurança da informação
(Universidade Federal de Santa Maria, 2015-12-18)
Risk management is one of the main management processes of security information since it aims to identify, analyze, evaluate and control risks that are due to security information. To utilize users´ experiences in this ...
Dinamismo estrutural e transformação monocristal para monocristal de novas estruturas estendidas de chumbo(II)
(Universidade Federal de Santa Maria, 2016-09-09)
The reaction of 1,4-α,α’-xylenediylbis(phenylphosphinic acid) (H2XBPP) with lead(II) generated two different extended structures: [Pb3(XBPP)3(H2O)] 1 and [Pb5(μ3-O)(XBPP)4(H2O)] 5 depending on the pH employed in the reaction. ...
Os primeiros 62 AGNS observados com o SDSS-IV MANGA: cinemática estelar e do gás
(Universidade Federal de Santa Maria, 2018-07-25)
Active galaxies exhibit a great luminosity in central region that can not be explained only by the
emission of the stars of the galaxy, but by the presence of an active galactic nucleus (AGN). In
this scenario, gravitational ...
HPSM: uma API em linguagem c++ para programas com laços paralelos com suporte a multi-CPUs e Multi-GPUs
(Universidade Federal de Santa Maria, 2016-12-21)
Parallel architectures has been ubiquitous for some time now. However, the word ubiquitous
can’t be applied to parallel programs, because there is a greater complexity to code them comparing
to ordinary programs. This ...
Análise multitemporal da orizicultura irrigada no município de Restinga Sêca/RS em detrimento das áreas de preservação permanente
(Universidade Federal de Santa Maria, 2012-08-17)
Armonizar la actividad económica, en este caso, La actividad agrícola con la preser-vación ambiental es, realmente, un tema complejo y difícil. Por otro lado, es posible tal armonía considerándose que las actividades ...
Instabilidade difusiva em um modelo presa-predador generalista
(Universidade Federal de Santa Maria, 2017-01-26)
In this work, we investigate the pattern formation of a reaction-diffusion generalist
predator-prey system with constant alternative food source and a Holling type III
functional response. The local model can exhibit up ...
Síntese, caracterização e avaliação da atividade peroxidase de novos complexos de cobalto com ligantes derivados do piridoxal
(Universidade Federal de Santa Maria, 2017-02-16)
This work treat with the synthesis and characterization of new cobalt complexes with ligands derived from pyridoxal and their application as mimetics of the enzyme peroxidase. The complexes were structurally characterized ...