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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 ...
Complexos de paládio(II) derivados de calcogênios (Se e Te): síntese, caracterização e aplicação para a produção fotocatalítica de hidrogênio
(Universidade Federal de Santa Maria, 2022-04-08)
This work describes the synthesis and characterizartion of four new palladium complexes derived from palladium selenolates: [Pd4(SeC6H4-p-F)4(OAc)4]·DMF (1), [Pd4(SeC6H4-p-Cl)4(OAc)4]·DMF·H2O (2), [Pd4(SeC6H4-p-Me)4(OAc)4]·2CHCl3 ...
Aplicação de desenho experimental estatístico para otimização de método para determinação de ditiocarbamato em erva-mate (Ilex paraguariensis)
(Universidade Federal de Santa Maria, 2022-03-30)
Dithiocarbamates (DTC) are one of the main classes of fungicides applied to the control of fungal diseases on a large variety of crops. In this work, a fast and cheap sample preparation procedure for DTC analysis in yerba ...
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 ...
Determinação de oligoelementos e elementos potencialmente tóxicos no sangue de pacientes com leucemia linfocítica aguda
(Universidade Federal de Santa Maria, 2022-03-17)
Acute lymphocytic leukemia (ALL) is a type of cancer that affects the bone marrow, changing the hematopoietic process due to a genetic mutation that affects the stem cells of lymphoid origin. So, immature lymphoblasts are ...
Método multirresíduo de agrotóxicos em caqui empregando QuEChERS sem limpeza do extrato e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2022-03-16)
Pesticides are widely used in food crops and residues of these compounds may be present in these crops. Despite their large-scale use in agriculture, pesticides can be dangerous to human health, animals and the environment. ...