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Síntese e avaliação biológica de compostos derivados da 5’-arilcalcogenil-3’-amino-timidina
(Universidade Federal de Santa Maria, 2020-11-06)
Organochalcogen compounds have been the subject of several studies regarding their
biological potential in various applications, such as antitumor, antiviral, anti-inflammatory, and
antioxidant. Regarding the last, we ...
Calcogenetos e calcogenolatos (Se, Te) de paládio: síntese e caracterização estrutural
(Universidade Federal de Santa Maria, 2020-02-17)
This work describes the synthesis and characterization of eleven new palladium compounds with
formula [Pd3(-SeMes)4(bipy)2](PF6)2·2MeCN (1), [Pd3(-SePh)4(bipy)2](PF6)2·bipy (2), [Pd2(-
SePh)2(bipy)2](PF6)2 (3), ...
Cinética de decomposição de líquidos iônicos dicatiônicos com ânions derivados de ácidos carboxílicos
(Universidade Federal de Santa Maria, 2020-02-19)
This work describes the synthesis, structural characterization, and thermal stability of eight dicationic ionic liquids (DILs) containing the cations 1,4-bis(3-methylimidazolium-1-yl)butane ([Bis(C4MIM)]2+) and 1,10-bis(3- ...
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 = ...
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 ...
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 ...
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 ...
Síntese, caracterização e estudo fotofísico de novas calcogenoporfirinas derivadas da 5,10,15,20–tetrakis (4-bromometilfenil)porfirina
(Universidade Federal de Santa Maria, 2020-09-30)
In this work, two classes of porphyrins were prepared, the first involving the synthesis of new calcogenoporphyrins derived from 5,10,15,20 - tetrakis (4-bromomethylphenyl) porphyrin, characterization and study of photophysical ...