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Itens para a visualização no momento 21-23 of 23
Especiação de compostos de enxofre, níquel e vanádio em cimento asfáltico de petróleo (CAP) e sua relação com os processos de envelhecimento
(Universidade Federal de Santa Maria, 2015-10-27)
The speciation of sulfur compounds in CAP is very important, considering that these compounds are responsible for oxidation processes in asphalt binders, modifying their chemical and physical characteristics. The aim of ...
Usando a decomposição em modos empíricos para determinação de fluxos turbulentos entre oceano/atmosfera
(Universidade Federal de Santa Maria, 2015-04-08)
Turbulent fluxes may be directly determined as the statistical covariance between
quantities locally observed. Besides environmental and instrumental difficulties associated
with taking high frequency measurements over ...
Estudo de reações de flúor-inserção em 1H-pirazóis utilizando os reagentes fluorantes selectfluor, DAST e MFSDA
(Universidade Federal de Santa Maria, 2015-08-19)
This thesis describes the studies carried out using fluorinating reagents with different approaches: Selectfluor as an electrophilic fluorine source; DAST for nucleophilic fluorinations and MFSDA as a nucleophilic ...