The contribution of the analytical ultracentrifuge to the technology and development of lipoprotein research, 1948–1991.- Analytical ultracentrifugation as a tool for studying membrane proteins.- Can sedimentation analysis contribute to the protein folding problem?.- Analysis of intra- and intermolecular interactions in some oxidases using an analytical ultracentrifuge.- Sedimentation velocity analysis of the DNA-protamine interaction.- Comparative determination of the particle weight of glycoproteins by SDS-PAGE and analytical ultracentrifugation.- Analytical ultracentrifuges with multiplexer and video systems for measuring particle size and molecular mass distributions.- A new procedure for the determination of the molar mass distribution of polymers in solution from sedimentation equilibrium.- Determination of the degree of swelling and crosslinking of latex particles by analytical ultracentrifugation.- Determination of coalescence stability of emulsions by analytical ultracentrifugation under separation of dispersed phase.- Swelling pressure equilibrium of swollen crosslinked systems in an external field. I: Theory.- Swelling pressure equilibrium of swollen crosslinked systems in an external field. II: The determination of molecular parameters of gelatin/water gels from the swelling pressure-concentration curves.- Swelling pressure equilibrium of swollen crosslinked systems in an external field. III: Unsolved problems concerning the systems gelatin/water and k-carrageenan/water.- Future requirements for modern analytical ultracentrifuges.