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Avaliação de métodos de preparo de amostras para a determinação de elementos terras-raras em insetos comestíveis por USN-ICP-MS
(Universidade Federal de Santa Maria, 2023-08-11)
In this work, three sample preparation methods were evaluated for the subsequent
determination of rare earth elements (REE) in insects using inductively coupled plasma mass
spectrometry (ICP-MS). To avoid possible ...
Determinação de farmacos em efluentes hospitalares utilizando UHPLC-QTOF MS, UHPLC-MS/MS e avaliação dos quocientes de risco ambiental
(Universidade Federal de Santa Maria, 2023-10-02)
One of the main sources of pollution of aquatic systems by drugs is the incorrect
disposal of hospital effluents (HWW). The HWW matrix is quite complex and
therefore its analysis is a challenge, in this context, sample ...
Determinação de resíduos de agrotóxicos em feijão preto empregando método QuEChERS e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2023-06-09)
Brazil is the third largest producer of black beans (Phaseolus vulgaris L.) in the world,
with 60% of its population consuming this legume. During bean cultivation, pesticides
can be used at any stage of development and ...
Adsorção de metais pesados de efluente de fosfatização industrial usando argila bentonita e casca de soja
(Universidade Federal de Santa Maria, 2023-10-25)
In the present work heavy metals removal from real phosphate effluent, a stage of the industrial painting process, was investigated. As adsorbents, bentonite clay and soybean hulls without previous treatments were evaluated. ...
Materiais funcionais de baixo custo como transdutores de energia: triboeletricidade, flexoeletricidade e higroeletricidade
(Universidade Federal de Santa Maria, 2023-10-25)
The growing energy demand worldwide in recent decades and the limited availability
of fossil fuels and global warming have made the search for new sustainable and
environmentally friendly energy sources one of society's ...
Síntese e avaliação biológica de novos híbridos moleculares derivados de 5’-arilcalcogenil-3-amino-timidina e 2,4,6-tricloro- 1,3,5-triazina
(Universidade Federal de Santa Maria, 2023-09-29)
The search for synthetic strategies that allow the efficient hybridization of biologically active molecules has gained attention among researchers, since they allow access to wide multiactive pharmacological varieties. In ...
Síntese, caracterização estrutural e estudo fotofísico de 1,1- diflúor-3-aril-6-aril(heteroaril)-1H-[1,3,4]oxadiazolo[3,2-c] [1,3,5,2]oxadiazaborininos
(Universidade Federal de Santa Maria, 2022-03-21)
This work presents the results obtained for the synthesis, structural characterization
and evaluation of the photophysical properties, in solution and in the solid state, of a series of
nine specimens of 1,1-difluoro-3 ...
Complexos de vanádio(V) derivados de trifenilfosfônios e hidrazidas: avaliações estruturais, interações com dna e hsa e potencialidades citotóxicas
(Universidade Federal de Santa Maria, 2023-12-20)
The development of new drugs and prodrugs with antiprotozoal, antibacterial, and antineoplastic therapeutic actions is currently focused on non-covalent and reversible interactions with deoxyribonucleic acid. In this effort, ...
Evidências da eletrização de polímeros dielétricos durante a impressão 3D
(Universidade Federal de Santa Maria, 2024-01-23)
During the fused deposition (FDM) 3D printing process, several effects are observed on the deposited polymers. These effects include phase change, extrusion, voltage gradient, friction, contact between different ...
Determinação simultânea de agrotóxicos e micotoxinas em fitoterápicos: Validação e aplicação de métodos multirresíduo empregando LC-MS/MS
(Universidade Federal de Santa Maria, 2023-02-27)
The use of herbal medicines has increased significantly, but the presence of pesticide residues as well as the presence of mycotoxins have generated constant discussion and concern on the part of regulatory agencies. The ...