Reinaldo R. Vargas

Learn More
Adaptive radiations play key roles in the generation of biodiversity and biological novelty, and therefore understanding the factors that drive them remains one of the most important challenges of evolutionary biology. Although both intrinsic innovations and extrinsic ecological opportunities contribute to diversification bursts, few studies have looked at(More)
Este trabalho descreve a oxidação eletroquímica do 4-metóxi-cinamato de metila e de outros ésteres metílicos do ácido cinâmico die trimetoxilado, em solução metanólica neutra ou alcalina. Nos estudos eletroquímicos foram empregadas voltametria cíclica, bem como eletrólises preparativas a potencial ou corrente controlados, em celas de um ou dois(More)
Liquid chromatography coupled with mass spectrometry is an outstanding methodology for fast analysis of phenolic compounds in biological samples. Twenty two compounds were quickly and accurately identified in the methanolic extract of the Antarctic lichen Ramalina terebrata for the first time using ultra high pressure liquid chromatography coupled with(More)
OBJECTIVE To determine the prevalence of hydatidosis in humans and livestock in the Los Ríos region during the years 1999-2009. METHODS A retrospective survey of all discharge records of patients undergoing removal of cysts produced by Echinococcus granulosus during the period 1999-2009 in the Hospital Clinico Regional of Valdivia was conducted. With the(More)
  • 1