A theoretical study of unsteady magnetohydrodynamic boundary layer stagnation point flow. heat and mass transfer of a second grade electrically-conducting nanofluid from a horizontal stretching sheet with thermal slip and second order slip velocity effects is presented. The Buongiorno formulation is employed for nanofluids and in addition the no-flux nanoparticle boundary condition is... https://www.lecoureures.shop/product-category/course-a-pied-accessoires-montres/