Title:Diseno, desarrollo e implementacion de un sistema web para el control de empresas contratistas y subcontratistas, trabajadores y faenas de la empresa Cementos Bio-Bio, Planta Centro
Title:Ultrasound-assisted phase-transfer catalysis method in an aqueous medium to promote the Knoevenagel reaction: Advantages over the conventional and microwave-assisted solvent-free/catalyst-free method