No description available.

No description available.

The observation was performed in brick building for the pig weaners. The stabling was created as group litter pens. The porkers was batten on fodder. The aim of the work was evaluationed microclimate of stable and the influence of the ionization on the air dustiness. The temperature, the relative humidity, the rapidity of atmospheric circulation, the cooling-down temperature and dustiness was measured in the pig house. The ionization was practised in stable and than was evaluation the influence of the ionization on the air dustiness. From the measurement was found out, that the ionization of the air was positive affect low particle concentration of dust. Effect of the ionization on the air was the highest during feeding-time.

The objective of this diploma thesis is to assess the factors affecting the concentration of dust particles during forage pressing. For this purpose, five presses for square bales and five presses for round bales were selected. They were harvesting different kinds of straw. Thanks to measurement using an aerosol monitor, the concentration of dust particles during the harvest was detected. The measured values were evaluated and the amount of concentration of the dust particles between the square and round bale presses was compared. There were also set the methodological steps of the measurement procedure.

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The goal of thesis is an analyse of protective functions of fast-growing timber species and a set of theirs part in the total non-energic meaning. The meaning of these timber species is very wide. The analyse is focused on first of all ameliorative function, and on sinking of wind erosion impact, then on insulating function, containing appreciation of impact on sinking of noisiness and catch of dustiness in an environment, and sanitation function which is represented by the production of oxygen.

Air ionization is a method used at air treatment of closed spaces. Properly applied air ionization improves health condition of bred animals, lowers the costs of pharmaceuticals and increases their efficiency. Negative ions attach themselves to particles of dust causing them to drop to the ground. The aim of the thesis was to analyse the influence of air ionization on air dustiness in a relation to temperature changes and relative air humidity in a farrowing house for sows. The farm used litter in the lairage pens. Sows were fed with dampened mixture. By the help of a data logger was measured the temperature [°C] and the relative air humidity [%]. The readings were recorded at hourly interval. Speed of the air circulation [m.s-1] in the stall and the cooling power [mcal.cm-2.s-1] were measured in the resting stage. The air dustiness in the stall was measured on the level of a lying sow in the state of resting, activity and after an activity. The data of the concentration of dust molecules in the air were recorded at interval of 10 seconds. The length of the measuring for each period was set for 8 minutes. The size adjustment of the dust molecules wasn?t specified. On selected days was applied the air ionization. At high temperature and relative humidity it came to binding of ions to the molecules of dust. At low temperature, high relative humidity and reduced intensity of air change in the stall the ionization didn?t have any influence on the dustiness because the dust settled as a result of the relative air humidity.