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Ciclização cascata de o-diinil benzyl calcogenetos promovida por dicalcogenetos de diorganoíla e FeCl3
(Universidade Federal de Santa Maria, 2019-02-21)
The treatment of ortho-diynyl benzyl chalcogenides with a mixture of iron(III) chloride and diorganyl diselenides led to functionalized chalcogen isochromene-fused chalcogenophene derivatives. The reaction parameters were ...
Determinação de resíduos de avermectinas em soja, feijão e milho empregando método QuEChERS modificado e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2019-02-26)
Soybeans and beans are considered oleaginous plants of great economic importance in Brasil. Maize is a cereal that also generates profitability for the economy, but its use, to a large extent, is as animal feed. In the ...
Determinação simultânea multiclasse de fármacos em água de consumo humano empregando extração em fase sólida e UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2019-02-26)
Pharmaceuticals are used in both human and veterinary medicine for the prevention and treatment of various diseases. The lack of adequate treatment for urban and industrial effluents associated with the incorrect disposal ...
Fitoquímica, atividades antimicrobiana e de inibição enzimática de Erythrina crista-galli (Fabaceae) e Valeriana polystachya (Caprifoliaceae) e obtenção de derivados de metabólitos de V. polystachya.
(Universidade Federal de Santa Maria, 2018-07-18)
The disorders that affect the central nervous system and infectious diseases are among the pathologies that affect the world's population and grow more and more. Thus, the search for compounds that are potentially more ...
Determinação multiclasse de resíduos de agrotóxicos e medicamentos veterinários em carnes por LC-MS/MS
(Universidade Federal de Santa Maria, 2012-03-23)
The agribusiness has been incorporating new technologies in the production of
meat, including good management of farms, health, balanced diet, breeding and
integrated production. Allied to this, there is a growing concern ...
Estudo de parâmetros reacionais em moinho de bolas na síntese de aril(heteroaril)-1h-pirazóis
(Universidade Federal de Santa Maria, 2012-08-08)
This paper describes a study of reaction parameters in a ball mill in the synthesis of
1H-pyrazole acid catalyzed. The studied parameters were: amount of reactants,
frequency, reaction time, amount of catalyst, number ...
Determinação multiclasse de agrotóxicos em camas biológicas empregando cromatografia líquida acoplada a espectrometria de massas
(Universidade Federal de Santa Maria, 2022-02-14)
Pesticides are used worldwide in the agricultural production of different crops in order to avoid losses in production due to the attack of pests and diseases. Due to the increase in food production, consequently, the ...
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, ...
Determinação de compostos aromáticos nitrogenados fixos e voláteis em matrizes asfálticas empregando cromatografia líquida de alta eficiência (HPLC)
(Universidade Federal de Santa Maria, 2021-12-16)
Petroleum asphalt cement is the main source of asphalt cement today. The handling and application of the binder on the pavement is only possible with the use of high temperatures, which causes the matrix to undergo an aging ...