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Itens para a visualização no momento 21-30 of 75
Investigação das propriedades fotofísicas e estudo da interação com biomoléculas de porfirinas meso-substituídas em posição meta contendo complexos de PdII, PtII e RuII
(Universidade Federal de Santa Maria, 2022-01-19)
This work aimed at the synthesis of porphyrins: meso-tetra(3-pyridyl)porphyrin (3-H2TPyP), meso-tetra [(3-
pyridyl)-chlor-(2,2'-bipyridyl)-palladium(II) ]porphyrin (3-Pd(bpy)TPyP), meso-tetra[(3-pyridyl)-chloro-(1,10-
...
Síntese de 3-(organocalcogenil)-imidazotiazinas e funcionalização de inamidas via reações de ciclização, clorosselenação e tosilação promovidas por cloreto férrico e ácido p-toluilssulfônico
(Universidade Federal de Santa Maria, 2022-02-21)
In this thesis, four synthetic protocols were developed for the synthesis of four new classes of compounds, including the synthesis of 3-(organocalalcogenyl)-benzoimidazothiazines, 4-(organocalalcogenyl)-oxazolones, vinyl ...
Determinação multiclasse de resíduos de antimicrobianos em músculo de frango empregando limpeza por SPE e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2022-03-18)
Antimicrobials have been widely used in the prevention and/or treatment of diseases
within the broiler supply chain in order to maintain productivity. The indiscriminate use
of these veterinary drugs can, however, lead ...
Desenvolvimento e aplicação de método por UHPLC-MS/MS para determinação de fármacos em efluentes tratados em sistemas de wetlands construídos
(Universidade Federal de Santa Maria, 2021-12-18)
The growth in production and consequently in the use of pharmaceuticals and personal care products over the years has made domestic effluents generated both in large cities and in small cities loaded with these compounds, ...
Design and characterization of polymer-based nanoparticles loaded with zinc phthalocyanine for use in photodynamic therapy
(Universidade Federal de Santa Maria, 2021-10-08)
Zinc phthalocyanine (ZnPc) is a promising second-generation photosensitizer (PS) that exhibits advantageous properties that include low toxicity, high chemical and photochemical stability, strong absorption in the red ...
Estudo sobre teluroxanos gigantes: novos exemplos e metodologias para derivatização
(Universidade Federal de Santa Maria, 2022-03-29)
The current work describes the synthesis and structural characterization of a new class
of compounds, the giant telluroxanes. Eleven new compounds were obtained:
[{(PhTe)18{M(NO3)(H2O)}O24}2I16] (M = Y (1), La (2), Eu ...
Desenvolvimento de método para determinação multiclasse de resíduos de medicamentos veterinários em músculo suíno por UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2022-04-08)
In swine farming, veterinary drugs are mainly applied to provide animal’s health. However, incorrect use can cause the presence of residues of these substances above the maximum limit allowed (MRL) in pork, and because of ...
Reações entre (e)-5-bromo-1,1,1-trialo-4-metoxipent-3-en-2-onas e aminoácidos para produção de heterociclos de 5, 6 e 7 membros
(Universidade Federal de Santa Maria, 2022-05-13)
This work present the versatility of 4-alkoxy-5-bromo-1,1,1-trialopent-3-en-2-ones in reactions with amino acids, exploring the four reactive centers of this building block and leading to the formation of heterocycles of ...
Avaliação das condições de extração, cristalização e separação de sais e sedimentos de petróleo do pré-sal e posterior caracterização química
(Universidade Federal de Santa Maria, 2022-04-08)
In this work the experimental conditions of the ASTM D4807 standard which
could influence the amount of solids retained on the surface of the nylon
membrane were evaluated. Modifications to the ASTM D4807 standard, ...
Amidas aromáticas como modelos supramoleculares: de polimorfos a cocristais
(Universidade Federal de Santa Maria, 2022-05-06)
This work explores using aromatic amides as models for understanding the characteristics of packing in the solid-state arising from structural changes. These models were adopted for their molecular simplicity, allowing the ...