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Síntese e caracterização de 1,3,4-oxadiazolil-1,2,4-oxadiazóis derivados de ácidos acrílicos 3-substituídos
(Universidade Federal de Santa Maria, 2017-02-24)
A series of 1,3,4-oxadiazolyl-1,2,4-oxadiazoles was synthesized through a one-pot condensation-cyclization reaction between 3-substituted acrylic acids and 5-aryl-1,2,4-oxadiazolyl-1,2,4-oxadiazoles, and were characterized ...
A zona de convergência do atlântico sul e sua relação com a oscilação Antártica
(Universidade Federal de Santa Maria, 2017-03-03)
During the rainy season (october-march) over the southeast of Brazil there is a band of convective nebulosity that extends generally from the south of the Amazon to the southwest Atlantic ocean, known as the South Atlantic ...
Autoassociação de amidas aromáticas: abordagem supramolecular e mecanismos de cristalização
(Universidade Federal de Santa Maria, 2017-07-21)
This work presents the use of N-phenylamides as models for the study of self-association and intermolecular interactions. Obtaining the crystal of N-phenyltrifluoroacetamide allowed its diffraction and inclusion in the ...
Estudo teórico de nanodomínios de grafeno e siliceno em carbeto de silício
(Universidade Federal de Santa Maria, 2018-02-20)
In this work the structural, optical and electronic properties of hexagonal monolayer compounds
of silicon carbide (h-SiC) in pristine form and in the presence of defects like graphene (h-
SiC-C) and silicene (h-SiC-Si) ...
Um framework para a distribuição e renderização de plantas em tempo-real para paisagens em larga escala
(Universidade Federal de Santa Maria, 2018-02-26)
Rendering vegetation on virtual terrains is an important issue in computer graphics as plants
comprehend an integral part of natural landscapes. The main challenges are associated with
the complexity of natural ecosystems ...
Adsorção de cluster de ouro em materiais bidimensionais
(Universidade Federal de Santa Maria, 2017-07-31)
In this work, we studied the interaction of Au34 gold cluster with different two-dimensional
materials. Au clusters, differently of their macroscopic form, are chemically reactive. Their
use requires substrates. The ...
Características médias da circulação atmosférica em eventos de neve no sul do Brasil
(Universidade Federal de Santa Maria, 2017-06-19)
In this work the mean behavior of atmosphere preceding and during snowfall events was
investigated. Furthermore, anomalous fields correlated to snowfall events related to an atmospheric
base state were quantified. To ...
Síntese e estereoquímica de isoxazóis espiro-tetracíclicos trifluormetil substituídos
(Universidade Federal de Santa Maria, 2017-02-23)
The present dissertation initially describes methodologies for the synthesis of five 3-(trifluoromethyl)-3,3a-dihydrospiro[chromeno[4,3-c]isoxazole-4,1'-cycloalkan]-3-ols (7) in 65 – 84 % yields, where the spirocarbocyclic ...
Modelos de autômatos celulares para febre amarela silvestre em bugios
(Universidade Federal de Santa Maria, 2018-02-28)
In this work, discrete mathematical models are proposed to analyze the dynamics of a population
of howler monkeys stricken with periodic outbreaks of yellow fever. Using the cellular
automata framework, the models describe ...
Estrutura dinâmica e termodinâmica da zona de convergência do Atlântico Sul e sua relação com a oscilação Madden e Jullian
(Universidade Federal de Santa Maria, 2017-06-14)
In the southern summer period over South America, an important system is one of the main modulators of the rainfall regime of the working regions, the SACZ. This system is a nebulosity zone that extends from the Amazon ...