Listar por autor "Rojas-Sarmiento, Hugo Alfonso"

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    • Pechini method used in the obtention of semiconductor nanoparticles based niobium 

      Raba Paez, Angela Mercedes; Suárez, Diego Nicolas; Martínez, José Jiobani; Rojas-Sarmiento, Hugo Alfonso; Rincón Joya, Miryam
      The (Nb2O5) niobium pentoxide compound was synthetized by Pechini method. The followed synthesis protocol is promising to obtain 2O5 nanoparticles, in orthorhombic phase. This phase was obtained in the samples calcined at ...
      Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 

    • Soil bacteria that precipitate calcium carbonate: mechanism and applications of the process 

      Chaparro-Acuña, Sandra Patricia; Becerra-Jiménez, Mónica Liliana; Martínez-Zambrano, José Jobanny; Rojas-Sarmiento, Hugo Alfonso
      Bacteria with ureasic activity are microorganisms found in soil that in presence of urea and calcium, they can produce calcium carbonate, a process known as microbiologically induced calcium carbonate precipitation (MICP). ...
      Universidad Nacional de Colombia Revistas electrónicas UN Acta Agronómica.