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Itens para a visualização no momento 1591-1600 of 1976
Sistemas bidimensionais à base de silício: um estudo ab initio
(Universidade Federal de Santa Maria, 2023-02-24)
Using density functional theory (DFT) calculations we investigated silicon-based two-dimensional
systems, where two silicene phases were considered: the low-buckled (LB) silicene and the
dumbbell-like (DB) silicene.
First, ...
Determinação de fármacos antieméticos em amostras de sedimento usando microextração líquido-líquido assistida pelo efeito salting-out e LC-MS
(Universidade Federal de Santa Maria, 2022-11-01)
In this work a multiresidue method for the determination of three antiemetic drugs
(ondansetron, metoclopramide and bromopride) in a sediment sample was developed
and validated. Sediment samples were collected at 10 ...
Caracterização do comportamento da camada limite planetaria durante a passagem de tempestades severas na região de Santa Maria, RS
(Universidade Federal de Santa Maria, 2022-12-28)
Convective storms can significantly alter the evolution of the flow in the Planetary Boundary
Layer (PBL). In this study, thermodynamic, kinematic and turbulent quantities were calculated
in the PBL during the passage ...
Análise da biologia reprodutiva em Acacia mearnsii De Wild. (Fabaceae)
(Universidade Federal de Santa Maria, 2007-04-04)
The black wattle (Acacia mearnsii De Wild., Fabaceae) is one tree species
cultivated in Rio Grande do Sul since the middle of the 1930decade. It is a species
that presents a great ecological importance because of its ...
Eventos de drenagem de ar na camada limite muito estável
(Universidade Federal de Santa Maria, 2022-12-23)
The very stable boundary layer occurs on nights with light wind and clear skies, which cause
strong radiative cooling on the surface, changing the structure and some characteristics of
the normal stable boundary layer. ...
Aplicação da transformação ortogonal no georreferenciamento com divisão de área
(Universidade Federal de Santa Maria, 2008-11-11)
The Geodesy methods and equipments progress brings with himself the growing need on geodetic surveys. Thereby, it is possible to make compatible any surveys with no extension boundary like from plane models and with no ...
Síntese de 1,2,4-triazol-5-ilamino pirimidinas trifluormetil substituídas
(Universidade Federal de Santa Maria, 2009-12-16)
This work describes the synthesis and characterization of fourteen 4-trifluoromethyl-2-[3-(pyridyl)-1H-1,2,4-triazol-5-ylamino]pyrimidines (6, 7), from the cyclocondensation
reaction of N-[3-(pyridyl)-1H-1,2,4-triazol-5 ...
Síntese e cristaloquímica de complexos de Hg(II) e Ni(II) com o ligante 3-(2-fluorofenil)-1-(4-acetilfenil)triazenido e atividade biológica de triazenos livres
(Universidade Federal de Santa Maria, 2006-07-26)
In this dissertation were synthesized six compounds, of the which four are free triazene ligands and two
are triazenido complex of Hg(II) and Ni(II). The compouns were characterized by melting point, infrared an
UV/VIS ...
Estudo computacional de monocamadas de C, Si, Ge e suas ligas binárias
(Universidade Federal de Santa Maria, 2022-12-12)
Whitin the framework of the density funcional theory, we performed first principles calculations
on the main properties (geometry and electronic) of group IV monolayers. The first studied
system was the presence of carbon ...
Complementaridade quântica nos processadores quânticos da IBM
(Universidade Federal de Santa Maria, 2023-01-31)
Bohr’s principle of complementarity, after gaining contributions from several researchers, moved from a qualitative analysis to a quantitative analysis through what we
call today complementarity relations (CR). This change ...