A Research on Optimization Development and Laboratory Application of Economical and Ecological Production Techniques of Sorbent Materials for Determination of Thoriom as Nuclear Energy Fuel Upon Evaluation of Alternative Energy Sources Energy And Its Terminology Wind Energy Hydro - Power Altarnative Fuels Used in Engines Investigation of Economical Analysis Methods for Establishing a Model for the Energy Systems Economical Analysis Methods of Energy Systems Using Life - Cycle Cost (LCC) Model Investigating Environmental Impact of Energy Sources Experimental Section Economic Analysis Methods of Sorbent Materials