2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/191704This paper is devoted to the study of dynamics of fundamental string and D1-brane in I-brane background. We consider configurations where string and D1-brane uniformly wrap transverse spheres. We explicitly determine corresponding conserved charges and find relations between them.16 pages, reference addedHigh Energy Physics - Theorytext