Solid-state reaction between BaTiO3 and Fe2O3 was used to produce a multiferroic heterostructure composite. Commercial Fe(NO3)3?9H2O were suspended in ethanol for 30 minutes an ultrasound bath. The prepared mixture thermally processed at 300?C 6 h. Sintering 1300?C 1 h resulted of different phases, BaTiO3, BaFe12O19 Ba12Ti28Fe15O84, which confirmed by x-ray powder diffraction. A dense microstru...

We read with interest the paper entitled ‘Retrocaval in situ right internal mammary artery (RIMA) for distal marginal arteries grafting’ by Ramadan et al. [1] and congratulate the authors for the clear exposure of the technique, but nevertheless, we would like to add some further exactitudes. Routing of the in situ RIMA behind the superior vena cava and further into transverse sinus was introdu...

A ternary composite of hemin, gold nanoparticles and graphene is prepared by a two-step process. Firstly, graphene-hemin composite is synthesized through π-π interaction and then hydrogen tetracholoroauric acid is reduced in situ by ascorbic acid. This ternary composite shows a higher catalytic activity for decomposition of hydrogen peroxide than that of three components alone or the mixture of...