Preparation of glass¿ceramic materials from coal ash and rice husk ash: Microstructural, physical and mechanical properties Julián Dávalos; Ashley Bonilla; Mónica A. Villaquirán-Caicedo; Ruby M. de Gutiérrez; Jesús Ma. Rincón;

Synthesis of hydroxyapatite by hydrothermal and microwave irradiation methods from biogenic calcium source varying pH and synthesis time Mário Andrean Macedo Castro; Thayane Oliveira Portela; Gricirene S. Correa; Marcelo Moizinho Oliveira; José Hilton Gomes Rangel; Samuel Filgueiras Rodrigues; José Manuel Rivas Mercury;