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Síntese de 4-(1-fenil-5-trifluormetil-1h-pirazol-4-il)-1h-1,2,3-triazóis promovida por dialquil biaril fosfinas e catálise metálica
(Universidade Federal de Santa Maria, 2017-08-11)
The present dissertation describes the development of a three-step, one-pot methodology, involving the sequential reactions of Sonogashira cross-coupling, deprotection of terminal alkyne (removal of trimethylsilane group), ...
Caracterização e avaliação da atividade fotodinâmica de tetra-meso-[(piridil)porfirina]platina(II) frente à microorganismos
(Universidade Federal de Santa Maria, 2017-06-30)
This work deals with the synthesis of Tetra-meso-[(3-pyridyl)-chloro-2,2'-bipyridyl-platinum(II)]porphyrin (3-H2TPtPyP) and Tetra-meso-[(4-pyridyl)-chloro-2,2'-bipyridyl-platinum(II)]porphyrin (4-H2TPtPyP), starting from ...
Determinação de elementos do grupo da platina em carvão com alto teor de cinzas por ICP-MS
(Universidade Federal de Santa Maria, 2017-06-03)
In this work a method for the digestion of high ash content coal (>30%) using a high
pressure asher (HPA) system for further determination of platinum group elements
(PGEs) by inductively coupled plasma mass spectrometry ...
Determinação de compostos organosulfurados como marcadores dos processos de envelhecimento em matrizes asfálticas brasileiras
(Universidade Federal de Santa Maria, 2018-03-01)
The involvement of organosulfur species in the aging processes of Brazilian asphalt cements was studied using analytical methodologies such as ultra high performance liquid chromatography with atmospheric pressure ...
Obtenção e estudo da reatividade de ciano-acrilatos de etila e compostos relacionados com ênfase na síntese de N- e O-heterociclos
(Universidade Federal de Santa Maria, 2017-09-19)
This work reports the results of the reactivity study of the ethyl cyano-acrylates (3), obtained from the Horner-Wadsworth-Emmons (HWE) olefination reaction applied to α,β-unsaturated ketones (1) with diethyl (cyanomethy ...
Efeitos causados por nanopartículas de La2O3 em Pfaffia glomerata (Spreng.) Pedersen e estudo da distribuição de elementos por LA-ICP-MS
(Universidade Federal de Santa Maria, 2018-03-02)
The effect of La2O3 nanoparticles (NP-La2O3) on plants of the species
Pfaffia glomerata (Spreng.) Pedersen was investigated. Besides, the translocation
and the distribution of the NPs in aerial parts of the plant were ...
Síntese e avaliação biológica dos compostos 3-triazoilcalcogeniltimidina
(Universidade Federal de Santa Maria, 2018-02-26)
This work describes the synthesis and antioxidant and antitumoral activity of 3-triazoylcalcogenylthymidine (7a-o). A variety of nucleoside analogues were prepared using a Huisgen 1,3-dipolar cycloaddition, between the ...
Determinação multirresíduo de agrotóxicos em milho empregando método QuEChERS modificado e LC-MS/MS
(Universidade Federal de Santa Maria, 2017-09-22)
Corn is a cereal used in human and animal food, and moreover, as a source of raw material for other by-products, acquiring global importance. By presenting a distinct centesimal composition when compared with others cereals, ...
Efeitos energéticos e topológicos no design de cocristais de compostos aromáticos e em 1,5-diaril-1h-pirazol-3-carboxilatos de etila
(Universidade Federal de Santa Maria, 2017-07-20)
This work presents the study of the supramolecular environment in multicomponent crystals. Multicomponent
crystals were defined by J. D. Dunitz as a crystal containing two or more components together, so that this
concept ...
Determinação multirresíduo de agrotóxicos em abelha e pólen apícola empregando método QuEChERS modificado e LC-MS/MS
(Universidade Federal de Santa Maria, 2017-07-21)
The use of pesticides contributes to increase the production, but there is a growing concern with its adverse effects in the environment. The decline of bee population and the contamination of apicultural products by ...