Study of magnetic field frequency effect on the atomic and thermal behavior of paraffin/Cu nanostructure in a tube with non-connected rotating ribsBehrouz Salahshour, Davood Toghraie, Saeed Jafari Mehrabadi, Arash Karimipour and Peyman YousefiEur. Phys. J. Plus, 140 5 (2025) 364DOI: https://doi.org/10.1140/epjp/s13360-025-06266-4