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Determinação de flavonóides e resveratrol em vinho empregando cromatografia de fluxo turbulento-LC-MS
(Universidade Federal de Santa Maria, 2008-03-10)
Wine is known for its favorable biochemical properties such as antioxidant, anticarcinogenic and anti-inflamatory properties. Many of these properties can be assigned to flavonoids and resveratrol. Wine is known to contain ...
Obtenção de novos heterociclos derivados do ácido levulínico
(Universidade Federal de Santa Maria, 2013-09-30)
This study describes the attainment of twenty three (23) bis-heterocycles derived from the Levulinic Acid: Bis-Pyrazoles (6a-k) by the reaction of cyclecondensation between the 3-(5-(trifluoromethyl)-4,5-dihydro-1H-pyraz ...
Determinação de metais em matrizes oleosas por HR-CS AAS após extração induzida por quebra de emulsão
(Universidade Federal de Santa Maria, 2022-08-29)
Three methods based on extraction induced by emulsion breaking were developed for
the extraction and determination of metals in asphalt and oilseeds by high-resolution
continuum source atomic absorption spectrometry with ...
O papel da competição por luz e da troca de nutrientes na interação entre plantas
(Universidade Federal de Santa Maria, 2003-12-03)
At this work we present two models to describe de growth dynamics of interacting plants. The first system that we have used describes de water dynamics, and then relates it with the cations in the ground and with the biomass ...
Parametrização do transporte de energia cinética turbulenta na camada limite convectiva
(Universidade Federal de Santa Maria, 2011-12-15)
In this work a parameterization for the transport terms of the turbulent kinetic energy
(TKE) budget equation, valid for a convective boundary layer (CBL) is presented. This is
a hard task to acomplish from experimental ...
3-alcoxi-4-hidroxi pirrolidin-2-onas, 2-metilsulfanil pirimidina, enoilcarbamatos e 3-dialcoxi fosforiloxi trialometilados: síntese e potencial inibitório sobre a atividade da enzima acetilcolinesterase
(Universidade Federal de Santa Maria, 2006-10-20)
This work presents a study of the several organic compounds such as trihalomethylated enaminones, γ-amino alcohols, oxazinones, oxazines, dihydrofuranones, pyrrolidin-2-ones, 2-methylsulfanyl pyrimidine, enoylcarbamates ...
Impacto do clima futuro na fenologia da cultura do milho (Zea mays L.), e no ciclo de vida da lagarta-do-cartucho (Spodoptera frugiperda) em Moçambique
(Universidade Federal de Santa Maria, 2022-09-23)
In Mozambique, maize is a crop of great importance, occupying about 1/3 of the total cultivated area
and with highest production concentrated in the central and northern regions of the country. It is known that, ...
O desafio tecnológico da produção de VO2 por sputtering reativo: vantagens e limitações da técnica
(Universidade Federal de Santa Maria, 2022-09-22)
The vanadium dioxide(VO2) presents a semiconductor-to-metal (SMT) transition near room
temperature, as well as a structural phase transition (monoclinic-tetragonal or triclinictetragonal). The first report on SMT is from ...
Avaliação das emissões de hidrocarbonetos policíclicos aromáticos e seus derivados a partir de matrizes asfálticas
(Universidade Federal de Santa Maria, 2022-10-24)
Asphalt is a product of petroleum, basically consisting of hydrocarbons, which may contain
heteroatoms such as sulfur, oxygen and nitrogen in their structure. In the application of asphalt
on a road bed, it is subjected ...
Síntese de derivados vinílicos e enínicos de fósforo e aplicação sintética de dissulfetos imidazolidínicos quirais em reações assimétricas
(Universidade Federal de Santa Maria, 2002-07-26)
In this work, we developed a method to prepare β-alkynylvinylphosphonates 3 via a
palladium-catalyzed cross-coupling reaction of β-n-butyltellurovinylphosphonates 2 with
terminal alkynes. The compounds 2 were prepared ...