Solar-Thermal Power Generation with an Alkali Metal Thermo-Electric Converter (AMTEC).- Optimization of a Selective Volumetric Foil Receiver Detailed Heat Transfer and Flow Simulation.- Layout and Measurements of Terminal Concentrators.- Investigation of a Secondary Concentrator Model and of High Temperature Resistant Materials.- Corrosion Resistance of SiSiC Tube Material under the Specific Conditions of a Solar Heated Sulfuric Acid-Iodine Process Plant.- Fundamentals of Combined Thermal and Photochemical Decomposition of Sulfur Trioxide at High Temperatures.- The Use of Thermal Solar Energy to Treat Waste Materials Part 2.- Study Relating to the Use of Solar Energy for the Allothermal Gasification of Coal.- Solar Powered Energy Cycle with Coupled Biomass Production by Chemoautotrophic Bacteria.- Preparation and Characterization of Novel Mixed Titanium/Iron Oxide Photocatalysts for the Detoxification of Polluted Aquifers.- Model Compounds for the Oxidation of Water in Photosynthesis.- Chemical Use of Photonic Solar Radiation — Photochemical Syntheses (I).