1. They included research papers suggesting new solutions to scientific and technological questions arising in developing and utilizing hydro power, solar energy, terrestrial heat, biological gas, etc. such as "Method of Determining Co–ordinates of Wheel Impeller Contours" and "Mock Computer Interpretation of Wheels for Tidal Power Generation". Presented there were results of scientific and technological researches and experiences for effectively developing and utilizing various energies and saving them and achievements in the research and introduction of different kinds of combustion devices and heat–preserving methods of heating facilities.