This work deals with finding the actual dimensions of forest roads, earthworks on LS Kácov and comparing them with project documentation. The work is divided into 2 parts, theoretical and practical part. The theoretical part presents and explains the basic term concerning forest roads, the construction of forest roads, and at the same time presents the terms earth structures, earthwork and embankment slope, earth moving and describes the machines designed for earth moving. In the practical part, two project documentations are presented, details of which I compared with the actual dimensions of 3 earthworks. From the measured data I found a number of derogations from the project documentation. It was a change of inclination, or construction of a new drainage channel.

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This thesis describes the production of biogas and subsequent enrichment methods thus obtained biogas to natural gas quality. The reason is the efficient use of natural resources to address the energy needs of mankind. Should be answered the main question. The method of biogas to biomethane enrichment economically viable ? The answer should be obtained from each successive calculations and economic calculations.

Práce se zabývá stavem zásob ropy a zemního plynu v EU a vzrůstající závislostí EU na jejich dovozech. Dále mapuje evropskou energetickou politiku a její problémy jako závislost na ruských dovozech ropy a zemního plynu, nejednotný postoj zemí EU k energetické politice, stávající trasy ropovodů a plynovodů, růst světových cen těchto surovin a problémy ekologické. Analyzuje rovněž vnější vztahy EU s nejdůležitějšími partnery v oblasti energetiky a legislativní akty EU, které byly k tématu energetické politiky vydány.

This thesis deals with storage of natural gas in hydrates, forming of hydrate, its transportation and storage. Within the calculation part, three hydrate forming reactors are compared. According to the paramters used in the calculations, a reactor is designed. Basic drawing documentation is also available. The final calculations focus on the nominal evaporation of the storage tank.

The diploma thesis includes proposals suitable for usage of the technologies for clearing the biogas into a quality of substitute natural gas (SNG). The most suitable technology is chosen for the clearing the biogas out of the septic tanks of the laboratory for biologically decomposable waste treatment at Institute of process and environmental engineering. There is a calculation , a proposal and a realisation of the experimental unit for clearing the biogas performed.

The species representation of the epigeic invertebrates was found on the grounds of Miroslav. I compared oilseed rape, wheat and maize. The invertebrate capture was done using the method of soil traps. In each crop, I set up 5 ground traps on 28. 4. 2018. I pick up samples from the soil traps at ten-day intervals. The last collection was made on the day of the harvest of the crop (oilseed rape 20. 6. 2018, wheat 9. 7. 2018, maize 5. 8. 2018). I focused on the family of ground beetles (Carabidae). I totally caught 488 individuals from 25 species. In the oilseed rape I caught 231 individuals of 19 species, 102 individuals of 17 species in wheat and 155 individuals of 16 species in maize. I have divided species in the bioindicator groups: E 48%, A 52%. I used ecology characteristics to compare field crops: presence, absence, dominance, Simpsons index, constance, species diverzity, equitability and faunistic similarity.

The diploma thesis focuses on the influence of combustion of CNG fuel and the production of exhaust emissions at a passenger car engine. At the beginning of the thesis are presented the possibilities of using fuel in vehicles. Then there will be described the CNG fuel itself, its advantages and disadvantages and there will be comparison with petroleum-based fuels. Next will be described necessary modifications of the engines and modifications of the related systems to make combusting of CNG possible, also summarize the theoretical knowledge of the possible effects on the output ecological parameters of the engines. These theoretical knowledges were verified by measuring the actual emission parameters of the engine of a real vehicles Skoda Octavia III Diesel and G-TEC. At the end of this thesis are measured values evaluated. Evaluation confirmed, that vehicles, which uses as fuel CNG, reaches lower emission than vehicles that are using convention oil-based fuels.

This paper analyses the purchase and operation of vehicles on compressed natural gas. It contains a definition of Compressed Natural Gas (CNG) and discusses the various phases of its use in transport. It indicates the differences of this alternative fuel compared to traditional fuel such as gasoline or diesel. Then it focuses on the main reasons to support the use of compressed natural gas transport and talks about the legislation which has a major role in the development of alternative fuels. Then it specifies the disadvantages which can be associated with its use in transport. The last section includes an analysis on the specific example of the RWE CZ Group, which compares the different costs for compressed natural gas vehicles and vehicles which run on conventional fuel. Specifically the cost per kilometer of vehicle, CO2 emission and purchase price are given for comparison.

The aim of the Master's thesis is to map the importance and role of liquefied natural gas in Europe and to assess its significance for future energy security of the EU. Working with the general characteristics of natural gas and LNG dedicated to LNG infrastructure and LNG position in the gas market in Europe. The fundamental part of the thesis analyzes the importance of LNG for energy security of European countries. Theoretical framework of the thesis comprises the concept of energy security of Daniel Yergin, which is followed by an approximation of EU energy policy. The end of thesis describes an European project North-South Energy Corridor that will significantly strengthen the energy security of Central European countries.