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Autonomous outdoor system for growing plants
Schmidt, Dominik ; Lukeš, Zbyněk (referee) ; Petržela, Jiří (advisor)
This diploma thesis deals with maintaining possibilities for appropriate climatic conditions in outdoor greenhouse. The importance for growing plants is an appropriate temperature, humidity and adequate supply of water. The aim of the study is to suggest an apparatus sustaining beforehand defined conditions in the greenhouse with minimal requirements for maintenance. Apparatus uses analogue control by applying photosezistor and thermistor. For power supply are DC-DC converters used.
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Autonomous outdoor system for growing plants
Schmidt, Dominik ; Lukeš, Zbyněk (referee) ; Petržela, Jiří (advisor)
This diploma thesis deals with maintaining possibilities for appropriate climatic conditions in outdoor greenhouse. The importance for growing plants is an appropriate temperature, humidity and adequate supply of water. The aim of the study is to suggest an apparatus sustaining beforehand defined conditions in the greenhouse with minimal requirements for maintenance. Apparatus uses analogue control by applying photosezistor and thermistor. For power supply are DC-DC converters used.
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The effects of vegetative roofs onto the thermal stability of a building object
Majsniar, Michal ; Moudrý, Ivan (referee) ; Vimrová,, Hana (referee) ; TROJAN,, Karel (referee) ; Šťastník, Stanislav (advisor)
Dissertation deals with thermal technical assessment songs vegetation roof with moisture, the more the influence of vegetation on the roof thermal stability of the structure. The aim of this work is to demonstrate the beneficial effect of vegetation roofs, specifically growing Formation of thermo-technical point of view on the favorable temperature conditions in the building. Such speech can be captured only if it is judged-temperature profile dynamically daily operation of real marginal climatic temperatures. Using a stationary or quasi-stationary boundary climatic temperatures which are usually used for the determination of the energy performance of buildings, said effect can not be collected. Demanding simulation calculation, which apply material properties - thermal conductivity, density and thermal capacity, but gives a realistic picture of the thermal processes in progress not only in the roof structure of the building, but also across the entire circuit construction of a building. During the preparation of the dissertation was assembled machine program that works with the energy flow between rooms in the building and the surrounding environment. Furthermore calculates temperature gain of residence of persons, internal lighting and sunlight. The values of the internal environment are calculated from surface temperature, relative humidity, air exchange and, of course, the indoor air temperature with hourly weather data. In constructing the program was included in the calculation of the solar radiation both on flat and on an inclined surface. The output of the energy value and temperature conditions in individual rooms, which include not only thermal insulation but also thermal storage properties of an object. Using experimental measurements were able to demonstrate that the calculated values closely correlate real thermal processes, so it can be demonstrated through the calculated results of the vegetation roof has a favorable effect on the thermal state espe
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Toxicological Aspects of Chemical Accidents
Roman, Michal ; Vičar,, Dušan (referee) ; Mika, Otakar Jiří (advisor)
The master's thesis focuses on the toxicological aspects of chemical accidents. The aim is to determine the main acute risk of dangerous toxic chemical substances that can be escape in chemical accidents and determine their impact on life and damage to the health of the population and characterize the factors affecting the spread of these dangerous chemicals. The practical part focuses on the toxicological aspects of selected industrial pollutants.
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Process Calibrator M143 - Climatic Testing
Dojava, Václav ; Bartoň, Jan (referee) ; Havlíková, Marie (advisor)
Subject of the bachelor thesis are the climatic testing of the M143 calibrator. Theoretical section of the thesis is concerned with the analysis and description of the norms used during climatic tests of electronic devices. Thesis then continues by describing properties and functions of the M143 calibrator and the Caliber programme, which is performing automated measurement during the climatic tests, on the basis of the designed calibration procedure. Practical section of the thesis describes the designed testing points and climatic conditions, which are adjusted during the testing. In this section the testing points are implemented to the Caliber programme. Last section contains the analysis and evaluation of the measured data gained during the climatic testing. From these measured data, we are to determine, whether the M143 calibrator is within the specifications stated by the manufacturer in different climatic conditions.
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Analysis of on farm maize production systems and suggestions for improvement
ŠIMKOVÁ, Libuše
Maize is currently one of the most important feed crops. If we want to grow it effi-ciently, we should spend enough time selecting a suitable plot, seed and sowing date. When selecting the sowing date, it is important to achieve a temperature of 8 °C at sowing depth. The maize is sown at a depth of 3-4 cm and can be sown in conventional rows (75 cm), narrow rows (35 cm) or twin rows. Maize is a slow-growing crop, so it is important to pay attention to mechanical or chemical weed control. When harvesting maize for silage, the whole plant can be harvested or the split harvesting technique of CCM and LKS can be used. The hybrids WELAS, PERSEUS and AKANTO were evaluated. WELAS is a double line (Sc), early hyb-rid (FAO 240) and PERSEUS is a triple line (Tc), early hybrid (FAO 250). The PERSEUS hybrid was able to give a higher yield than WELAS in the plots evalu-ated. The hybrid used, agrotechnique and soil moisture availability had the greatest effect on yield.
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Influence of physiogeographic conditions on runoff extremity (Case study: Comparison of small catchments in the central area of Šumava Mountains)
Hojovec, Daniel ; Janský, Bohumír (advisor) ; Matoušková, Milada (referee)
In connection with the increasing occurrence of extreme hydrological situations, new opportunities for flood protection are emerging. Among these options also includes the gradually increase water retention capacity and to reduce runoff variability in headstream areas. This bachelor thesis deals with the comparison of three physical geographical different river basins in the headstream area of Šumava mountains. The main aim of this study is a research influence of physiogeographic conditions on runoff extremity in the catchment of individual selected streams on the basis of a comparative analysis. Extremity runoff is represented by selected flood situations that were processed on the basis of data from the experimental monitoring of Department of Physical Geography and Geoecology, Faculty of Science, Charles University in Prague. The opening part of this thesis consists of literary research, physical geographical and hydrographical characteristics of all catchment areas. The main part of the thesis is focused on description and comparison of extreme situations in the monitored catchments. The conclusion of the thesis is an evaluation, which consists in the assessment of the influence of physiogeographic conditions on runoff extremity. In the final evaluation it was found that the reaction of Černý...
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Vliv klimatických podmínek na chování ovcí
BLEHOVÁ, Zuzana
The objective of this thesis was to record the basic categories of behaviour of the sheep breed Suffolk under different climatic conditions throughout the year. The flock of meat sheep breed was grazed with the possibility of entry into the stables. Monitored were the basic categories of behaviour: movement, standing, lying down, feed intake. Comfortable behaviour, sexual behaviour, maternal behaviour, and water intake were monitored by frequency method. Four monitoring were carried out in total by interval method (interval length 10 min) for 24 h during the year (spring, summer, autumn and winter). Monitored was 68 pcs sheep of the basic herd and 3 breeding rams. In all observations the most represented categories were feed intake and lying. The longest feed intake period of sheep was in the winter 47.5 % of day at very low temperatures i.e. up to 10 °C. On the contrary, in the summer, at very high temperatures, sheep favoured the laying of 50 % per the day. In contrast the shortest time was dedicated to standing and movement. The shortest period of standing was recorded in the summer, when sheep stood 5.8 % of the day, and the shortest period of movement was recorded in the fall with the representation of 9.2 %. Climatic conditions greatly influence the grazing regime of sheep. Among the factors that disrupt the daily routine of the animals belonged heavy rain, thunderstorm, and high temperatures.
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Metodika uchovávání předmětů kulturní povahy
Selucká, Alena ; Mrázek, Martin ; Štěpánek, Ivo ; Mazík, Michal ; Grossmannová, Hana ; Jirásek, Pavel ; Holman, Pavel ; Jakubec, Petr ; Fricová, Jana ; Vácha, Zdeněk ; Červenák, Jan ; Dvořák, Martin ; Němec, Václav ; Dušková, Markéta ; Fogaš, Igor ; Bačovský, Jiří
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