Analysis of activation energy and melting heat transfer in MHD flow with chemical reaction M. Javed, A. A. Alderremy, M. Farooq, Aisha Anjum, S. Ahmad and M. Y. Malik Eur. Phys. J. Plus, 134 6 (2019) 256 Published online: 10 June 2019 DOI: 10.1140/epjp/i2019-12744-5