Fuel (types, characteristics, composition, calorific value); Combustion statistics (quantity and composition of combustion products in different combustion phases and for different types of fuels); Combustion dynamics (chemical equilibrium, chemical reaction rate, kinetics of combustion components combustion processes); Physical and physical-chemical phenomena in the combustion process; Distribution of combustion products according to the criteria for combustion and toxicity - environmental aspects of combustion; Gaseous combustion products - mechanisms of formation, impact on the combustion process and reduction possibilities; Procedures for reducing the emissions of sulfur, nitrogen and carbon oxides and hydrocarbons; Particulate matter (PM) - the mechanisms of formation, the effect of combustion and the possibilities of purification of gases.