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In this work, I dealt with the impact of hunting pressure on the activity of red deers (Cervus elaphus) in Doupov mountains. The main goal was to find out, whether intensive killing will change the activity of deers, and also hinds. Evaluated data should be useful for easier reduction of these animals not only in Doupov Mountains. Numbers of deers have been very high in the last few years and it would be necessary to achieve effective reductions, which would reduce the population to a tolerable limit. That should contribute to decreasing animal causes in forests and agriculture crops. Decreasing the numbers of deers should also lead to improving the quality of this spiecies not only in terms of trophies, but also the overall physical condition. It turned out that the activity decreased significantly during hunting. The reduction of activity began basically with the sunrise and ended in the sunset. For most individuals the activity increased in the night hours. In both July and August it turned out that there is a significant difference in activity among both day and sunset as well as day and night, while the lowest amount of activity was in the daytime, and in the sunset it has increased significantly. The highest activity was basically at dusk. From these results we can say that when comparing the two periods, the significant activity is mainly in the evening and night hours.

The thesis dealswith tractortires. It shows the different types of tires used in agricultural machinery. This work also includes field laboratory measurements. Theme asurement examines the dependence of the tire pressure on the output parameters of the tractor set. The examined output parameters were operational and efficient performance and operational and efficient fuel consumption. The controlled variable in the set was the tire pressure in the tractor. Values were recorded for the different tire pressure values. The measurement results are graphically represented and commented on.

For the supersonic flow mode, which occurs in the internal flow behind the aperture separating two spaces with a large pressure drop, the critical flow is a characteristic phenomenon. In the case of critical flow behind the aperture, a supersonic flow area with reduced pressure ending with a shock wave with a step change in state variables is created. When diagnosing velocities, which are obtained from the values of static and total pressure, due to the changes caused by the shock wave passage, correction of the diagnostic quantities obtained by measuring by means of mathematical relations taking into account the physical phenomena is necessary.

This thesis is based on the series of scholarly article dedicated to the issue ofpumping in the differential scanning chamber of an environmental scanning microscope. The thesis is based on Danilatos’s study where the pumping of the differential pumped chamber is solved by means of the Monte Carlo statistical method. The thesis performs analysis of gas flow at low pressures through orifice separating the spaces with a large pressure drop Dr. Danilate. The analyses will be used for the design of the experimental chamber which will serve for the experimental evaluation of the flow results in the chamber using the continuum mechanics.

The aim of dissertation was to evaluate physico-mechanical characteristics of pneumatic (membrane) press depending on pressing efficiency. As the result of economic evaluation was to determine the financial cost which occurs during pressing proces for 1 liter of juice, as well as make this analysis for different pressures.

The thesis describes the bearing between the chassis and the land, and current trends used of tires. Are listed and described the different types of tire construction. The main objective of this thesis is to describe a methodology for the experimental measurement of the drawbar properties of the tractor and analyze changes in drawbar performance due changes in inflation pressure of the tires. Measured and calculated data are processed by regression analysis.

The main objective of this thesis is the analysis and comprehensive review of agricultural tires designed for agricultural tractors highest performance class. Another part deals with the description and evaluation of major parameters for calculating the contact surfaces of tires with respect to an individual combination of inflation pressures and loads. The first part was prepared by literature review. Followed by laboratory testing focused mainly on determining the tire contact area with respect to an individual combination of inflation pressures and loads. The first part of the testing procedure was aimed at verifying the functionality and accuracy of the Plantograf. The second part of the test procedure included the estimate of the relationship between the wheel load and pressure distribution in the contact area of the tread of the tire under static loading. The last part of the test procedure consists in comparison of static and dynamic load tires. The measured and calculated values were processed into the relevant tables and graphs.

The aim of this thesis is to create a contemporary overview on the issue mulching using contemporary Czech and foreign literature. In the chapter Mulching is described in this technology and distribution mulchers and theoretical principle of their function and possible uses. The section Methodology already contains the actual description of the construction of the model shredder Vertical axis and a theoretical description of the pressure measurement using pressure strips on the mower housing. The actual results of the measurements and their interpretation, see chapter "Measurement Results". Subsequent comparison of measured values is described in Comparison of results. In the last chapter, Economic assessment is a calculation of unit costs set mower with energy means.

Dragonflies (Odonata) passing through several life stages during their life cycle. During metamorphosis between stages, they did not change only morphology, but also habitat preferences. Although they are associated to aquatic environment during larval stage, adults are much more mobile and can utilize the surrounding terrestrial habitats. Adult dragonflies are also involved in to terrestrial food chains. However the relationship, between the quality of terrestrial habitats and the diversity of dragonflies as well as seasonal changes in utilization of these habitats are still not known. This thesis aiming to analyze the influence of seasonality and distance from aquatic habitat on the abundance of dragonflies. Moreover, the differences in fish farming intensity were considered in the analyses. Fieldwork took place during 2015 from May to September. Data from 29 localities of Czech Republic were included. It is not surprising that I found significant influence of seasonality, on the abundance of all species, as well as a negative relationship between dragonfly abundance and distance from water reservoir. Interestingly, it was found, that dragonfly utilization of terrestrial areas around the extensively managed habitats was significantly higher than in habitats around intensively managed ponds. These findings demonstrate the importance of terrestrial habitats for dragonflies, especially those occurring around extensively managed water habitats.