**About the Editors**

**Alisson Mendes Rodrigues** is currently a researcher at the Federal University of Campina at the Materials Technology Laboratory (Brazil). He is a multidisciplinary researcher with a chemistry degree from the State University of Maranhao (Brazil), an MEng in materials engineering from the ˜ Federal Institute of Education, Science and Technology of Maranhao (Brazil), and a D.Sc. in materials ˜ science and engineering from the Federal University of Sao Carlos (Brazil). He completed his ˜ doctoral internship at the University of California (EUA), worked as a researcher at the University of Rostock (Germany), and was a researcher at the Sao Carlos School of Engineering, which is ˜ part of the University of Sao Paulo (Brazil). Among his scientific interests, the following stand ˜ out: glass science covering fundamental and applied research on isothermal and non-isothermal crystallization kinetics in stoichiometric and non-stoichiometric glasses, glass technology in the development and characterization of bioactive glasses and glass ceramics, the manufacture of ceramic coatings by physical vapor deposition (PVD) techniques such as high-power impulse magnetron sputtering (HiPIMS), and the development of eco-friendly and sustainable materials from urban and mining waste.

**Gelmires de Araujo Neves** is a full professor at the Federal University of Campina Grande (UFCG), located in Brazil. He holds a BEng degree in mining engineering from the Federal University of Para´ıba (Brazil), an MEng degree in chemical engineering from the Federal University of Para´ıba, and Dr-Ing in process engineering from the Federal University of Campina Grande. He has experience in the areas of materials and metallurgical engineering, with emphasis on ceramic materials and material recycling, working mainly on the following topics: waste recycling, construction materials, ceramic material processing, organophilic clays for use in drilling fluid, iron ore pelletizing, adsorption of dyes and nanometric fillers, and characterization of ceramic raw materials. He has also coordinated several research and development projects funded by various funding agencies and companies, has published 211 articles in indexed journals, and has supervised hundreds of students (graduate, master, and doctoral level). He was the head of the Department of Materials Engineering, a member of the Full Board of the UFCG, the coordinator of the Postgraduate Program in Materials Science and Engineering, and a member of the Postgraduate Chamber of the UFCG.

**Romualdo Rodrigues Menezes** is an associated professor and the head materials science and engineering graduate program at the Department of Materials Engineering, Federal University of Campina Grande (Brazil). Before, he was an assistant professor of materials engineering at the Federal University of Paraiba (Brazil). He holds a BEng degree in materials engineering from the Federal University of Paraiba, an MEng degree in chemical engineering from the Federal University of Campina Grande, and D.Sc. in materials science and engineering from the Federal University of Sao˜ Carlos (Brazil). The research activities of Prof. Menezes are in the broad areas of ceramic processing, nanotechnology, biomaterials, and waste recycling. He is the author or co-author of more than 150 scientific papers. He is a member of the Brazilian Ceramic Association and the Latin American Society of Artificial Organs, Biomaterials and Tissue Engineering.
