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Itens para a visualização no momento 11-20 of 75
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 ...
[2]- e [3]rotaxanos como modelos para avaliar a influência das interações intercomponentes e intermoleculares no estado sólido cristalino
(Universidade Federal de Santa Maria, 2021-07-30)
Rotaxanes are widely studied for their ability to move one component relative to another. Intercomponent interactions are widely studied in solution and have been gaining more field in the crystalline solid state. ...
Development of methods for Mg, Sr and Pb isotopic analysis of crude oil by MC-ICP-MS
(Universidade Federal de Santa Maria, 2021-09-17)
Neste trabalho, foi feita a determinação das razões isotópicas de Mg, Sr e Pb em petróleo por espectrometria de massa com plasma indutivamente acoplado e multi-coletor (MC-ICP-MS). Dois métodos de preparo de amostra foram ...
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), ...
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 = ...
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 ...
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 ...