We apply the quark delocalization and color screening model to nucleon-bary
on scattering. A semi-quantitative fit to N-N, N-Lambda and N-Sigma phase s
hifts and scattering cross sections is obtained without invoking meson exch
ange. Quarks delocalize reasonably in all of the different flavor channels
to induce effective nucleon-baryon interactions with both a repulsive core
and with an intermediate range attraction in the cases expected. (C) 2000 E
lsevier Science B.V. All rights reserved.