2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/82775The quark-meson coupling model, based on a mean-field description of non-overlapping nucleon bags bound by the self-consistent exchange of $σ$, $ω$ and $ρ$ mesons, is reviewed. In particular, I present the changes in the hadron masses of the (non-strange) vector mesons and the nucleon in a nucleus. I also give a new, simple scaling relation among the changes of the hadron masses.8 pages with one figure, to be published in Proc. of the International mini workshop on nuclear medium effect via nucleon induced reactions (21-22 March, 1997, Kyoto, Japan)Nuclear TheoryHigh Energy Physics - Phenomenologytext