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Cinética de craqueamento de hidrocarbonetos (C8) utilizando micropirólise em tubo de vidro selado aplicação em modelagem geoquímica
(Universidade Federal de Santa Maria, 2010-12-07)
One of the most fundamental problems in petroleum systems modeling, related to Oil
Exploration, is to determine the limits of space and time of hydrocarbon generation in
sedimentary basins. The aim of this study is to ...
Síntese de derivados de benzo[b]furano promovida por t-BuOK
(Universidade Federal de Santa Maria, 2023-01-20)
In this work, we report the study developed for the preparation of benzo[b]furan
derivatives via intramolecular double cyclization reaction promoted by tert-BuOK. First, 3-
((butylselanyl)methyl)-2-(phenylethynyl)benzofuran ...
Método multirresíduo para agrotóxicos e compostos relacionados em ar empregando trapeamento em sorvente polimérico e GC-MS/MS
(Universidade Federal de Santa Maria, 2013-10-25)
While pesticides are applied to crops in order to control pests and thereby increase productivity, these substances can undergo processes such as volatilization, dispersion and transport, reaching the atmosphere, soil and ...
Determinação de fármacos sintéticos em formulações farmacêuticas empregando métodos eletroquímicos e de separação
(Universidade Federal de Santa Maria, 2014-03-14)
The adulteration of natural pharmaceutical formulations using synthetic drugs has increased in the last years.Adulterations have been reported in the literature, which proves the increasing concern regarding this issue, ...
Isolamento, determinação estrutural e atividade microbiológica de moléculas bioativas no fungo ectomicorrízico Scleroderma UFSMSc1(Persoon)Fries
(Universidade Federal de Santa Maria, 2013-08-26)
Scleroderma UFSMSc1 spp. (Persoon:Fries) is an ectomicorrhyzal fungus of the Boletales order, Sclerodermatinae suborder and of the Sclerodermataceae family, Basideomycete, known as Gasteromycete, very common in Rio Grande ...
Avaliação de métodos de preparo de amostra para a determinação de halogênios em alumina de alta pureza
(Universidade Federal de Santa Maria, 2011-04-08)
The presence of trace elements in high purity alumina (e.g. halogens) can compromise the final product characteristics. In this work, different sample preparation methods based on alkaline fusion, halogen extraction in ...
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 ...
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 ...
Lixiviação convencional e lixiviação assistida por ultrassom de elementos terras raras a partir de fosfogesso
(Universidade Federal de Santa Maria, 2023-02-28)
Rare earth elements (REE) are a group of elements with very similar physical and chemical
properties. They include the 15 elements of the lanthanide series (La–Lu), Y, and Sc. The
need for these elements in different ...
Síntese de pirazóis e desenvolvimento de novos líquidos iônicos derivados de componentes farmacologicamente ativos
(Universidade Federal de Santa Maria, 2011-01-12)
The synthesis of two series of N-substituted pyrazoles from the cyclocondensation
reaction of β-enaminones ([R1C(O)C(R2)=CHN(Me2)], where R1 = Me, C6H5, 3-MeOC6H4,
4-Me-C6H4, 4-MeO-C6H4, 4-F-C6H4, 4-Cl-C6H4, 4-Br-C6H4, ...