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Estudo fitoquímico de Condalia buxifolia reissek: isolamento, determinação estrutural e atividades antimicrobianas
(Universidade Federal de Santa Maria, 2020-03-31)
This work describes the phytochemical study of the Condalia buxifolia Reissek species, belonging to the Rhamnaceae family, and evaluation of the antimicrobial potencial of the extracts obtained and of the isolated metabolites ...
Propriedades termofísicas e de agregação de líquidos iônicos dianiônicos derivados de ácidos carboxílicos
(Universidade Federal de Santa Maria, 2020-03-25)
Ionic Liquids (ILs) have been considered good candidates for thermal storage materials due to their properties of thermal stability, non-flammability, low volatility, low corrosion and high heat capacity. Dicationic ILs ...
Estudo da versatilidade do bis(2-piridinil)ditelano em química de coordenação
(Universidade Federal de Santa Maria, 2020-11-13)
This present work describes the synthesis and characterization of 19 compounds derivatives from bis(2-pyridinyl)ditellane (oPy2Te2, oPy = 2-pyridinyl) and bis(5-trifluoromethyl-2-pyridinyl)ditellane (Tfpy2Te2, Tfpy = ...
Processo de nanoemulsificação de óleos essenciais assistido por ultrassom
(Universidade Federal de Santa Maria, 2019-03-26)
Essential oils are volatile oils obtained from plants by physico-chemical extraction
processes. To overcome the hydrophobicity of essential oils, and allows their
dispersion in an unfavorable environment, many researchers ...
Geradores higroelétricos para a captação de energia construídos a partir de nanoestrutura de grafite e celulose
(Universidade Federal de Santa Maria, 2020-02-27)
Energy–harvesting devices show promising features to enable the operation of low-energy consumption devices, Internet-of-Things (IoT) and wearable electronics. The phenomenon of adsorption of water vapor to produce electric ...
Avaliação de metaloestrógenos em cabelo de mulheres com câncer de mama por LA-ICP-MS
(Universidade Federal de Santa Maria, 2021-05-07)
In this work, the relationship of metalloestrogens (Al, Sb, As, Ba, Cd, Cr, Co, Cu, Pb, Hg, Ni, Se, Sn, V, and Zn) with breast cancer in women with age around 59 years. Laser ablation coupled to inductively coupled plasma ...
Emprego da piroidrólise como método de preparo de amostras para a determinação de tungstênio em carbeto de silício por técnicas baseadas em plasma indutivamente acoplado
(Universidade Federal de Santa Maria, 2020-02-26)
In this work, pyrohydrolysis was proposed as a sample preparation method for the
tungsten volatilization of the silicon carbide (SiC) and subsequent determination by
induced coupled plasma optical emission spectroscopy ...
1,2,3-triazolil-1,2,4-oxadiazóis derivados de N-óxidos N-heterocíclicos benzofundidos: síntese, caracterização físico-química, reatividade e estudo computacional
(Universidade Federal de Santa Maria, 2021-12-18)
Taking into account potential bioactive, photophysical and redox-active properties of N-heterocycles and of their N-oxides, a 40 inedit benzofuroxan- or 2,2-dimethyl-2H-benzimidazole-1,3-dioxide- bound 1,2,3-triazolyl-1, ...
Desenvolvimento e aplicação de um sistema com arco elétrico para SS-FF AAS para a determinação de impurezas elementares
(Universidade Federal de Santa Maria, 2020-01-25)
An alternative system for solid sampling and element determination by heated tube coupled to flame atomic absorption spectrometry was developed for the determination of Cd, Co, Mo, Ni and Pb in high purity graphite and ...
Desenvolvimento de método utilizando a microextração líquido-líquido dispersiva em fase reversa para determinação de As, Cd, Hg, Pb, Co, Ni e V em excipientes farmacêuticos oleosos
(Universidade Federal de Santa Maria, 2021-03-05)
In this study, an extraction method using oily pharmaceutical excipients was developed for further determination of elemental impurity from classes 1(As, Cd, Hg, and Pb) and 2A (Co, Ni, and V) according to ICH Q3D. The ...