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Now showing items 741-750 of 1042
Adição de Michael de α,α-Diciano-Olefinas a Chalconas via organocatálise assimétrica empregando solvente derivado de biomassa
(Universidade Federal de São Carlos, 2018-05-18)
In recent years, organocatalysed reactions have become an important field in asymmetric synthesis. Particularly, Michael addition reactions using various donors and acceptors have been explored to generate substrates that ...
Avaliação de diferentes estratégias de determinação de nutrientes e potenciais contaminantes em alimentos por técnicas baseadas em laser
(Universidade Federal de São Carlos, 2018-10-19)
The present project focuses on the development of strategies for the elemental determination of Ca, Cd, Cr, Cu, Fe, Mg, Pb and Zn in samples of orange juice and dietary supplements by Laser-Induced Breakdown Spectroscopy ...
Produção de haloalcaloides por fungos de ambiente terrestre
(Universidade Federal de São Carlos, 2016-09-02)
The production of secondary metabolites by microorganisms is a tool to find new substances with potential pharmacological activities of human interest. Thus, the search for more extreme environments or even exposure of ...
Catalisadores a base de Pt suportados em matrizes mesoporosas de carbono visando a reação de eletrooxidação de glicerol
(Universidade Federal de São Carlos, 2018-08-24)
This work aimed the synthesis, characterization and electrochemical tests of Pt and Pt-Sb nanoparticle catalysts onto mesoporous carbon applied to glycerol electrooxidation reaction. Specifically, the carbon matrixes were ...
Estratégias para a determinação de minoxidil
(Universidade Federal de São Carlos, 2009-09-04)
In this work methods for determining minoxidil (MX) in commercial samples and electrolytes of synthetic plasma and urine are presented. The minoxidil is a pharmaceutical whose blood vessel dilation property is used in the ...
Síntese de 1,2,3-triazóis 1,4,5-trissubstituídos via catálise heterogênea empregando reações em micro-ondas e fluxo contínuo
(Universidade Federal de São Carlos, 2018-07-05)
Heterocyclic compounds containing the 1,2,3-triazole nucleus have received special attention in the field of synthetic chemistry have seen that have a wide field of application in biological and material areas. In this ...
Estudos da expressão e da função do gene sintase de quitina em Atta sexdens
(Universidade Federal de São Carlos, 2018-04-06)
In Brazil, leaf-cutting ants belonging to the genus Atta and Acromyrmex and are considered as pests in agricultural and forestry regions that can lead to great economic losses. The aim of this work was to identify the ...
Estudo dos alcaloides quinolônicos de Waltheria brachypetala Turcz: isolamento, determinação estrutural, biogênese, atividades fungitóxica e anticolinesterase
(Universidade Federal de São Carlos, 2012-06-26)
Waltheria brachypetala Turcz (Malvaceae) is an endemic medicinal plant from brazilian northeast. This plant is commonly used on folk medicine as antifungal, antiinflamatory and to treatment of bronchitis and central nervous ...
The implementation of NMR techniques for measuring interactions between small organic molecules/inhibitors and enzyme Acetylcholinesterase: a step towards Alzheimer´s control
(Universidade Federal de São Carlos, 2015-05-21)
The inhibition of the acetylcholinesterase (AChE) might be an excellent therapy in controlling Alzheimer’s disease as stated by the cholinergic hypothesis. In this context, the inhibitors of AChE, are of medical and ...
Diferenciação química de quatro espécies de Bauhinia (pata-de-vaca)
(Universidade Federal de São Carlos, 2018-06-15)
The search for new compounds from natural products with high biological activity is an arduous task that has improved due to the evolution of instrumental analytical techniques. In addition, the use of medicinal herbs for ...