Enyew Zereffa | Employee Engagement | Editorial Board Member | 2306

Assoc. Prof. Dr. Enyew Zereffa | Employee Engagement | Editorial Board Member

Professor of Inorganic Chemistry | The University of Adama Science and Technology University | Ethiopia

Dr. Enyew Amare Zereffa is an accomplished chemist whose scholarly work spans inorganic chemistry, analytical chemistry, materials science, and nanotechnology. With a strong academic foundation built through advanced degrees in chemistry, he has developed a research career distinguished by innovation, scientific rigor, and impactful contributions to applied chemical sciences. His publication record reflects sustained excellence, comprising 53 peer-reviewed documents, accumulating 1,345 citations, and resulting in an h-index of 18, underscoring the visibility and influence of his work within the scientific community. Central to Dr. Zereffa’s research portfolio is the design, synthesis, and characterization of inorganic materials, particularly nanomaterials and ceramic systems with applications in energy storage, catalysis, water purification, environmental remediation, and biomedical fields. His investigations into ceramic microfilters, nanocomposite structures, and modified metal oxides have contributed to advancements in sustainable technologies and low-cost materials development. These contributions support critical societal needs such as improved water quality, enhanced materials performance, and environmentally conscious industrial processes. His scientific interests bridge fundamental chemistry and applied engineering, emphasizing materials synthesis techniques, solid-state chemistry, surface chemistry, and advanced characterization methods. Dr. Zereffa’s work also demonstrates a strong commitment to problem-solving within local and global contexts, including projects on zinc oxide-based sunscreens, antibacterial nanocomposites, and energy-generating dye-sensitized solar cells. Through collaborations and funded research initiatives, he has driven forward interdisciplinary studies that connect chemistry, materials science, environmental engineering, and nanoscience. As an active contributor to scholarly dissemination, he engages in manuscript reviewing, editorial duties, and academic evaluation, ensuring quality and integrity in scientific publishing. His sustained output, impactful citations, and engagement with emerging research themes position him as a leading figure in contemporary inorganic and materials chemistry research.

Featured Publications

Derbe, T., Gindose, T. G., Sani, T., & Zereffa, E. A. Synthesis of zeolite-A/Fe₃O₄/biochar/MOF-5 composite for the defluoridation of drinking water.

Derbe, T., Sani, T., & Zereffa, E. A. Synthesis of a zeolite-A/MOF-5 composite for the defluoridation of groundwater.

Zereffa, E. A., Segne, T. A., Ananda Murthy, H. C., Gupta, N. K., Orshiso, Aqueous extract phyto-mediated synthesis of ZnO nanoparticles and ZnO-bentonite nanocomposites: Physical analysis and investigation of antibacterial activity.

Gindose, T. G., Gebreslassie, G., Derbe, T., Ashebr, T. G., Daba, Y. T., Mtunzi, T. B. Charge separation enhancement of triple-phase Ag₃PO₄–AgI–ZnO heterojunction for dye photodegradation.

Kofi Obeng | Employee Work Effort | Best Researcher Award

Prof. Dr. Kofi Obeng | Employee Work Effort | Best Researcher Award

Emeritus Professor | The University of  North Carolina A&T State University | United States

Professor K. Obeng, is a highly respected scholar in the fields of transportation economics, logistics, and urban planning, widely recognized for his influential contributions to transportation research and policy analysis. His prolific academic output includes 60 scholarly publications with 523 citations and an h-index of 14, reflecting both the depth and sustained impact of his work on the global research community. Professor Obeng’s research primarily focuses on transportation planning, public transit efficiency, cost optimization, subsidy policy, transport pricing, safety analysis, and productivity measurement in urban transportation systems. His studies have advanced understanding of how economic incentives, regulations, and institutional structures affect the operational efficiency and financial sustainability of public transit systems. Through rigorous quantitative modeling and policy evaluation, his research has provided valuable insights into improving performance, enhancing service quality, and promoting sustainable transportation solutions. His works have been published in numerous high-impact journals, including Transportation Research, Transport Policy, Journal of Air Transport Management, and Administration & Society, contributing to international dialogues on transport management and economics. He has also co-edited influential academic volumes, such as Transit Economics, which explore complex issues surrounding transit subsidies and productivity. Professor Obeng’s interdisciplinary approach bridges economic theory and applied transportation policy, addressing challenges in public transit finance, safety management, and strategic organizational performance. His research has informed transportation policy reforms and supported the advancement of effective, data-driven solutions for modern mobility systems. As a leading figure in transportation research, Professor Obeng’s scholarly legacy continues to influence academic, governmental, and professional communities, reinforcing his position as a key contributor to the evolution of transportation planning and economics in both theory and practice.

Profiles:  Scopus | ORCID | Google Scholar

Featured Publications

Obeng, K.  Incentivizing public transit to improve performance to meet the programmatic goal of a funding agency. Public Transport.

Obeng, K. Regulations and factor adjustment in transit systems. Transportmetrica A: Transport Science.

Obeng, K.  Accounting for factors affecting cost and technical inefficiency. Case Studies on Transport Policy.

Obeng, K.  On incentives and optimal effort to improve bus transit performance. Transportation Planning and Technology.

Obeng, K.  Effects of government regulations and input subsidies on cost efficiency: A decomposition approach. Transport Policy.