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Biomass belongs among renewable energy sources and its representation in national energy strategies is increasing due to the limited supplies of fossil fuels. One of the options for substitution of fossil fuels is short rotation cropping systems for woody biomass as a method of reclamation and revitalization of anthropogenic soil profiles during restoration activities in the areas after brown coal mining. The scope of the project "Methodology of sustainable agricultural management in anthropogenic damaged landscap...

The article deals with the examination of the state of the ball track at the heavy machine ZP6600/Z79. It gives results of material exams which were taken on given samples and it describes the progress and results of the numeric counting for the state of tenseness. The used method works with the ending parts at the bottom of part of the ball track when it touches the ball. The decision about the renovation of the track depended on the determination of the groove size degradation at the ball track. The material tes...

In the Czech Republic, the production of energy using fossil fuels - particularly coal - is still a major proportion of total production. The energy sector is and will remain one of the most important areas of the Czech economy, ensuring supply of electricity and heat to the population and industrial enterprises. In the power and heating plants is burned primarily domestic brown coal mined in opencast mines in the north-western part of the Czech Republic, namely, Usti Region. For combustion of biomass in the Czech...