[en] We have been involved in the investgation of nuclear structure properties of nuclei close to the proton drip line. In these studies we have used on-line isotope separators at Oak Ridge (UNISOR) and Berkeley (OASIS), the ORNL velocity filter, and a fast helium-gas-jet transport system at the LBL 88-in. cyclotron. We describe briefly three areas of our research that have dealt with particle decays: 1. α-decay in medium-weight nuclei, 2. α-decay rates for even-even isotopes, and 3. β-delayed-proton decay of N = 81 precursors. (orig.)