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Avaliação dos efeitos da radiação micro-ondas na atividade heterogênea e estabilidade química de nanopartículas de magnetita em processos oxidativos avançados
(Universidade Federal de Santa Maria, 2020-02-20)
In this research, for the first time, is reported the role of microwave (MW) radiation into
the heterogeneous activation of nano–Fe3O4. Since magnetite has been extensively used as
catalyst in advanced oxidative processes ...
Retratos de fase de uma família de sistemas quadráticos planares integráveis com duas parábolas invariantes
(Universidade Federal de Santa Maria, 2021-05-07)
In this work we prove the Grobman-Hartman Theorem and the Local Stable Manifold
Theorem, classical results in the study of the local behavior of the solutions of nonlinear
differential equations. Then we provide the ...
A matemática no contexto do pacto nacional pelo fortalecimento do ensino médio
(Universidade Federal de Santa Maria, 2016-08-29)
This research has as main objective to analyze the Math Notebook of the Covenant by National High School Strengthening (Pacto Nacional pelo Fortalecimento do Ensino Médio PNEM), to understand how mathematics was presented ...
Complementariedade, emaranhamento, incerteza e invariância de Lorentz
(Universidade Federal de Santa Maria, 2021-05-20)
Bohr’s complementarity principle was introduced as a qualitative statement about quantum
systems, which have properties that are equally real, but mutually exclusive. This
principle, together with the uncertainty principle, ...
Estimativa da partição de energia na superfície a partir de séries meteorológicas de temperatura e umidade específica do ar
(Universidade Federal de Santa Maria, 2015-07-03)
The developed method is proposed with the aim of estimating the energy partition on the
surface, according to the Bowen ratio method, and the height of convective boundary layer
on the monthly scale. The basic hypothesis ...
Não-estacionariedade de séries temporais turbulentas e a grande variabilidade dos fluxos nas baixas freqüências
(Universidade Federal de Santa Maria, 2011-08-11)
Turbulent flow high complexity makes it difficult to describe complex phenomena,
such as the transport of vector and scalar quantities at the lower atmosphere,
making the analysis of experimental data, such as time series, ...
Decaimento da turbulência na camada superficial
(Universidade Federal de Santa Maria, 2005-04-27)
This dissertation presents a study of the atmospheric turbulence decay on the surface layer during the evening transition. This is done through the analysis of the spectral densities temporal evolutions of the three wind ...
Modelo simplificado para turbulência na camada limite noturna
(Universidade Federal de Santa Maria, 2016-03-08)
The appropriate estimation of turbulent fluxes in very stable conditions is a great challenge
for numerical models that simulate the average behavior of the stable boundary layer.
Although many features of the flow are ...
Implementação de um modelo de coluna simples para a camada limite estável utilizando diferentes formulações de turbulência
(Universidade Federal de Santa Maria, 2012-10-01)
In this work a single column model is implemented, aiming primarily to simulate the Stable
Boundary Layer (SBL). The model is composed of prognostic equations for the potential
temperature, specific humidity and the wind ...
Estudo de método multirresíduo para determinação de agrotóxicos em águas superficiais por SPE e GC-MS/MS
(Universidade Federal de Santa Maria, 2013-07-30)
Modern agriculture started using different techniques and materials in order to
minimize losses in production and meet the growing demand for food, combining
productivity and profitability. However, the indiscriminate ...