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Avaliação de sorventes para remoção de clorofila na determinação de agrotóxicos em espinafre empregando método QuEChERS e GC-ECD
(Universidade Federal de Santa Maria, 2017-03-30)
Vegetables are classified as greens when used on green parts and play an important role in human diet and nutrition. These foods are sources of vitamins, antioxidant polyphenols, essential amino acids, fibers, minerals, ...
Síntese e atividade antitumoral e antioxidante de calcogeno-amino timidinas (CAT)
(Universidade Federal de Santa Maria, 2016-07-29)
This work aims the synthesis of new 5'-arilchalcogenil-3-animo-thymidine (5a-m) derivative containing chalcogenium or thymidines nucleosides derivatives (3-azidothymidine 1) with potential antioxidant and antitumor evaluation. ...
Determinação de hidrocarbonetos policíclicos aromáticos utilizando calibração multivariada
(Universidade Federal de Santa Maria, 2017-01-31)
A method was developed to determine low molecular weight polycyclic aromatic hydrocarbons (naphthalene, anthracene, fluorantene, phenanthrene and acenaphthene) in aqueous leachates from soils and sediments using a salting-out ...
Nanoencapsulação de ftalocianina de zinco para o uso em terapia fotodinâmica
(Universidade Federal de Santa Maria, 2015-02-26)
The present work aims to investigate the influence of nanoencapsulation of zinc phthalocyanine photosensitizer (ZnPc) in polymeric nanoparticles for use in photodynamic therapy (PDT). Three formulations of ZnPc loaded ...
Determinação multirresíduo de agrotóxicos por GC-MS/MS em plantas medicinais empregadas na produção de fitoterápicos
(Universidade Federal de Santa Maria, 2018-08-06)
The use of exotic and Brazilian plants as a resource for therapeutic purposes in the prevention and treatment of diseases, have been evaluated as to the possibility of extracting plant active compounds, as well as the ...
Decomposição de amostras de alimentos empregando ácido nítrico diluído e pressurização com diferentes gases em sistema de câmara única de reação assistida por radiação micro-ondas
(Universidade Federal de Santa Maria, 2017-03-23)
In the present work the use of a microwave-assisted wet digestion using a single reaction chamber system (MAD-SRC) at high pressure and temperature was evaluated for digesting food samples. It was evaluated the use of ...
Um roteiro para criação de conteúdo digital baseado na metodologia de resolução de problemas
(Universidade Federal de Santa Maria, 2019-03-20)
The process of teaching and learning mathematics is surrounded by several difficulties that, if not overcome, end up accumulating knowledge gaps. These gaps in turn amplify the difficulties and end up harming the learning ...
Desenvolvimento de método de preparo de amostras de solução de nutrição enteral mediante sistema de digestão de alta pressão para posterior determinação multielementar
(Universidade Federal de Santa Maria, 2018-03-01)
In this work two methods of sample preparation for the digestion of enteral nutrition solution (SNE) using microwave assisted digestion (MWAD) in a single reaction chamber (SRC) system and subsequent multielement determination ...
Determinação de impurezas elementares em sulfato de bário por ICP-MS após volatilização empregando combustão iniciada por micro-ondas
(Universidade Federal de Santa Maria, 2018-07-25)
In order to volatilize analytes from inorganic samples, additives such as
microcrystalline cellulose have been applied. The cellulose is burnt and the heat
generated helps to volatilize the analytes of the matrix being, ...
Superfícies de curvatura média constante com bordo plano em R3
(Universidade Federal de Santa Maria, 2019-05-20)
In this work, we will show that for each H such that AH2 < 2 , where A represents the
area of
and = p5−1
2 , the Dirichlet problem
(PD)H8>
<>
:
div ru p1+|ru|2 = −2H em
u = 0 em @
,
is solvable, for ...