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Itens para a visualização no momento 21-30 of 103
Estudo molecular e supramolecular de complexos triazenidos com metais de transição: uma abordagem voltada à engenharia de cristais
(Universidade Federal de Santa Maria, 2017-09-15)
This work shows the synthesis of unpublished Zn(II), Cd(II) and Pd(II) complexes with
bis-cated triazene molecules, including macrocycles. Together these compounds, a series of
symmetrical ortho-halogenated single-catenad ...
Utilização de algoritmo genético para a determinação da estabilidade de aglomerados atômicos e as aplicações destes com grafeno
(Universidade Federal de Santa Maria, 2017-01-31)
In this thesis we propose a improvement of the Genetic Algorithm (GA) method that is used to
search the stability of geometry of atomic clusters. The proposed improvements consist by introducing
two new operators: the ...
Síntese de 4-(1-fenil-5-trifluormetil-1h-pirazol-4-il)-1h-1,2,3-triazóis promovida por dialquil biaril fosfinas e catálise metálica
(Universidade Federal de Santa Maria, 2017-08-11)
The present dissertation describes the development of a three-step, one-pot methodology, involving the sequential reactions of Sonogashira cross-coupling, deprotection of terminal alkyne (removal of trimethylsilane group), ...
Classificação de singularidades semi- hiperbólicas e nilpotentes de campos planares analíticos
(Universidade Federal de Santa Maria, 2017-07-12)
In this work, we present some results of Qualitative Theory of Planar Ordinary Differential Equations employed in the investigation of the behavior of solutions in the neighborhood of semi-hyperbolic and nilpotent singularities.
Caracterização e avaliação da atividade fotodinâmica de tetra-meso-[(piridil)porfirina]platina(II) frente à microorganismos
(Universidade Federal de Santa Maria, 2017-06-30)
This work deals with the synthesis of Tetra-meso-[(3-pyridyl)-chloro-2,2'-bipyridyl-platinum(II)]porphyrin (3-H2TPtPyP) and Tetra-meso-[(4-pyridyl)-chloro-2,2'-bipyridyl-platinum(II)]porphyrin (4-H2TPtPyP), starting from ...
Determinação de elementos do grupo da platina em carvão com alto teor de cinzas por ICP-MS
(Universidade Federal de Santa Maria, 2017-06-03)
In this work a method for the digestion of high ash content coal (>30%) using a high
pressure asher (HPA) system for further determination of platinum group elements
(PGEs) by inductively coupled plasma mass spectrometry ...
Sistema de recomendação de processos para o desenvolvimento de jogos digitais
(Universidade Federal de Santa Maria, 2017-04-06)
The digital gaming market is a billion dollar industry that faces issues in the way
games are developed. One method to easy these issues is to use developer aid tools
such as Recommendation Systems. These applications ...
Variabilidade das ondas de calor na região subtropical do Brasil
(Universidade Federal de Santa Maria, 2017-03-03)
Recently, much has been discussed in the scientific community about global warming since the 1970s and its impacts on temperature extremes. Some studies refer to a time of the 21st century. However, even if this gap is ...
Estudo da turbulência atmosférica na floresta Amazônica - análise de dados micrometeorológicos e modelagem numérica
(Universidade Federal de Santa Maria, 2017-08-31)
In this work, a study of atmospheric turbulence at the Amazon forest is done through the analysis
of nocturnal turbulence data and numeric modeling using a single column model. Important
issues in micrometeorology are ...
Estudo de populações estelares em galáxias ativas a partir de cubos de dados no infravermelho próximo
(Universidade Federal de Santa Maria, 2017-08-30)
The correct characterization of the spectral energy distribution (SED) components in Active Galactic
Nuclei (AGN) is the key for their understanding and their role in the evolution of the host
galaxies. In the near-infrared ...