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Especiação de níquel e cobalto em águas estuarinas do Amazonas empregando voltametria de redissolução
(Universidade Federal de Santa Maria, 2020-09-24)
The estuaries are defined as the region of mixing fresh water from the river and sea water. They are characterized as dynamic ecosystems inserted in a complex hydrographic network. Among the estuaries, the Amazon River ...
β-enaminocetonas trialometil substituídas: síntese, estrutura e propriedades fotofísicas de quelatos difluororganoboro e reações de ciclocondensação intramoleculares
(Universidade Federal de Santa Maria, 2020-03-27)
This work shows the synthesis, spectroscopic structural characterization,
microbiological properties determination, photophysical, and the DNA bonds of the new
difluorooraganoboron compounds, wich are BODIPYs derivatives ...
Avaliação de métodos analíticos para estudos em material biológico de ratos submetidos ao tratamento com nanotubos de carbono
(Universidade Federal de Santa Maria, 2020-05-27)
In this work, methods for the analysis of tissues, fluids and furs of rats submitted to the treatment with carbon nanotubes (CNTs) were evaluated, allowing to identify where they are concentrated, indirectly, by the ...
Conversão fermentativa de microalga Chlorella sp. em goma gelana por Sphingomonas paucimobilis
(Universidade Federal de Santa Maria, 2020-01-30)
Microalgae (MA) are potential feedstock for the production of fermentable monosaccharide, due to the appreciable carbohydrate fraction. The species used in this dissertation was Chlorella sp., one of the most resistant ...
Estudo da natureza de interações químicas do tipo calcogênio e halogênio mediante o estudo da estrutura eletrônica e da teoria quântica de átomos em moléculas
(Universidade Federal de Santa Maria, 2021-08-27)
In this work we present the results of a systematic analysis of the electronic structure of different chemical systems, through the Density Functional Theory (DFT), for the study of the nature of chemical bonds involving ...
Desenvolvimento de método para determinação multirresíduo de agrotóxicos em ovos empregando método QuEChERS e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2020-02-28)
The egg is one of the most consumed foods in the world and it has a complex
composition due to the amount of proteins, lipids, vitamins and minerals present in it,
which makes it difficult to extract compounds from this ...
Síntese, caracterização e aplicação de compostos contendo oxiânions de selênio
(Universidade Federal de Santa Maria, 2020-02-18)
This work describes the synthesis and structural characterization of five new coordination compounds containing, as an inorganic ligand, the selenite and hydrogen selenite anion. The compounds [Zn4(μ-SeO3)2(μ4-SeO3)2(bipy)4]·11H2O ...
Determinação multirresíduo de agrotóxicos em tomate, beterraba e cenoura empregando QuEChERS modificado e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2020-04-17)
Beet, carrot and tomato are foods with a high content of water, sugars and pigments, which are among the most cultivated and consumed vegetables worldwide and frequently contain pesticide residues. Therefore, a simple ...
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. ...