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Síntese nanoparticulas metálicas estabilizadas por copolímeros em bloco com aplicação em reação de redução e acoplamento de Suzuki
(Universidade Federal de Santa Maria, 2014-03-07)
The catalytic activity of hierarchical hybrid structures, formed by metal nanoparticles, M-NPs (AuNPs and PdNPs), synthesized and stabilized by block copolymers, is reported in this present work. The catalytic activity was ...
Emprego de microextração líquido-líquido dispersiva em mel para posterior determinação de cádmio e chumbo por espectrometria de absorção atômica com chama
(Universidade Federal de Santa Maria, 2014-01-09)
Honey has become an important environmental indicator, due to its various botanical and geographical sources, since bees come into contact with different environments that could be contaminated with toxic elements. Among ...
Produção biotecnológica de ácido itacônico a partir da casca de arroz
(Universidade Federal de Santa Maria, 2014-03-24)
Rice Husks (RH) can be regarded as an abundant lignocellulosic raw material in the Brazilian southern(se for somente regiões do RS, SC e PR fica South region, senão, tá ok) region, renewable and practically without economic ...
Determinação de poluentes orgânicos persistentes (pops) em leite materno: desenvolvimento e aplicação de método analítico empregando GC-NCI-MS
(Universidade Federal de Santa Maria, 2014-03-12)
Persistent Organic Pollutants (POPs) receive this designation because of the time that remain unchanged in the environment. From the 1960s there was already evidence of the presence of these compounds in sediment, breast ...
Determinação de fungicidas em sucos de laranja empregando método de extração mini-luke modificado e UPLC-MS/MS
(Universidade Federal de Santa Maria, 2014-03-26)
Orange juice is a relevant contribution to the Brazilian economy, as long as five glasses of orange juice consumed in the world, three are produced in Brazil. For the purpose of increase the production of fruits and, ...
Alcaloides ciclopeptídicos de Scutia buxifolia e suas atividades antimicrobianas
(Universidade Federal de Santa Maria, 2014-04-29)
The phytochemical investigation of the stem bark of the specie Scutia buxifolia (Rhamnaceae) led to the isolation of four cyclopeptide alkaloids: scutianine C (14) and three diastereoisomer of scutianine H (19), isolated ...
Avaliação de métodos de decomposição de chocolate e determinação de metais por ICP-OES e ICP-MS
(Universidade Federal de Santa Maria, 2014-02-13)
In this work, was evaluated the main methods of sample preparation reported in the literature for decomposition of chocolate and, in addition, was proposed the decomposition by microwave induced combustion (MIC) for further ...
Determinação de glifosato e ampa em água por injeção direta da amostra em cromatografia iônica capilar e LC-MS/MS
(Universidade Federal de Santa Maria, 2014-08-29)
Glyphosate [N-(phosphonomethyl) glycine] is the most widely used pesticide in the world for controlling weeds in agriculture. High amounts of this herbicide and its major metabolite, aminomethylphosphonic acid (AMPA), have ...
Síntese verde e versátil de calcogenol ésteres e avaliação da atividade antibacteriana
(Universidade Federal de Santa Maria, 2014-08-30)
The present work aims the synthesis of chalcogenoesters, by a green and
versatile methodology, using low cost and non-toxic reagents, as well as the
biological activity of this kind of compounds, as antibacterial agents.
By ...
Estudo da atividade antioxidante in vitro e caracterização cromatográfica em extratos de plantas medicinais da Amazônia
(Universidade Federal de Santa Maria, 2014-03-12)
Most of the free radicals generated in the body is derived from oxygen and are associated with
the development of many diseases. Medicinal plants are a natural resource in the treatment
prevention of diseases and have ...