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Itens para a visualização no momento 1821-1830 of 1937
Investigação de equilíbrios através de potenciometria e voltametria com resolução multivariada de curvas
(Universidade Federal de Santa Maria, 2012-03-09)
The interaction between the amino acid glutathione (GSH) and zinc (II) and cadmium (II) ions was investigated using data obtained by potentiometric and voltammetric measurements. Solutions with ionic strength 0.1 M KCl ...
Determinação de boro em amostras de carbeto de silício utilizando piroidrólise e ICP-OES
(Universidade Federal de Santa Maria, 2012-12-13)
In this work a procedure for boron determination in samples of silicon carbide by pyrohydrolysis and detection by inductively coupled plasma optical emission spectrometry was developed. The silicon carbide samples were ...
Método híbrido de detecção de defeitos em redes de sensores móveis utilizando algoritmo de localização
(Universidade Federal de Santa Maria, 2012-11-01)
The technological advances resulting from electronic systems miniaturization were crucial to the reach of current technology. The microelectronics and studies to reduce power consumption in electronic devices provided that ...
Síntese de Pirimidinas derivadas de 7,7,7-trialo-4-metoxi-6-oxo-4- heptenoatos de metila e bi-heterociclos trifluormetilados
(Universidade Federal de Santa Maria, 2012-02-27)
An efficient method to obtain pyrimidinones and pyrimidines trialomethylated from the cyclocondensation reaction of compounds of methyl 7,7,7-trihalo-4-methoxy-6-oxoheptenoate
with urea and differents amidines providing ...
Raciocínio baseado em casos e agrupamento de dados no reuso e priorização de casos de teste de software
(Universidade Federal de Santa Maria, 2023-05-01)
Reuse and prioritization of tasks play a crucial role in software testing. When these tasks
do not receive the proper attention, regression testing activities end up consuming most
of the resources and time allocated for ...
Bloqueios atmosféricos e sistemas frontais sobre a América do Sul em cenários de clima futuro
(Universidade Federal de Santa Maria, 2014-02-20)
The meteorological systems modulate the behavior of rainfall and temperature on
large regions and must be correctly simulated by the climate models. The representation of
these events should be good for the reliability ...
Determinação de halogênios por cromatografia de íons e ICP-MS em sulfato de bário após decomposição por piroidrólise
(Universidade Federal de Santa Maria, 2013-02-28)
In this work pyrohydrolysis is proposed as pretreatment of barium sulfate and subsequent determination of F, Cl, Br and I by ion chromatography (IC) and inductively coupled plasma mass spectrometry (ICP-MS). After the ...
Modelos de redes de mapas acoplados para interações herbívoro-predador
(Universidade Federal de Santa Maria, 2013-04-12)
In this work we propose a discrete predator-prey model with the purpose of analyzing the
spatio-temporal dynamics of herbivorous and their predators. For that, we explicitly consider
the dispersion of both species through ...
Espécies de arsênio em moluscos bivalves determinadas por LC-ICP-MS E LC-CVG-ICP-MS após extração assistida por microondas
(Universidade Federal de Santa Maria, 2013-03-05)
In this work, the aim of this study is to evaluate sample preparation procedures and
liquid chromatography-inductively coupled plasma mass spectrometry (LC-ICP-MS) and LC
coupled to chemical vapor generation (CVG) and ...
Síntese de 4-trifluormetil-5-(propan-1-ol-3-il)-1H-piridin-2-iminas N-substituídas
(Universidade Federal de Santa Maria, 2013-03-08)
This work presents a simple and accessible synthetic route for the
preparation of a series, of nineteen new N-substituted 4-trifluormethyl-5-
(propan-1-ol-3-yl)-pyridin-2-(1H)-imines, obtained from the reaction between ...