El Mato Azul (Maireana brevifolia (R.Br.) P.G. Vilson), una chenopodiácea australiana establecida recientemente en Gran Canaria. Islas Canarias

[ES] Se confirma la expansión corológica del xenófito, Maireana brevifolia (R.Br.) P.G. Wilson, especie invasora de reciente introducción en Gran Canaria comentándose su ecología y la amenaza que implica para las comunidades vegetales de los espacios naturales protegidos en la isla.

Binary liquid-liquid equilibria for systems of mono or disubstituted haloakanes (Cl,Br) and pyiridinium based ionic liquids. Advances in the experimentation and interpretation of results

[EN]This work presents the measurements made to define the temperature−composition curves for a set of binary systems composed of several pyridinium-based ionic liquids (ILs) [bpy][BF4] and [bYmpy][BF4] (Y = 2,3,4) with mono- and dihaloalkanes (Cl and Br) in the temperature interval [280−473] K and at atmospheric pressure. With the exception of the short chain dichloroalkanes (1,1- and 1,2-), all the compounds present some degree of immiscibility with the ionic liquids selected.