|
|
Design of Self-Propelled Sprayer
Sovják, Richard ; Paliatka, Peter (referee) ; Zvonek, Miroslav (advisor)
The main aim of this master's thesis is innovative approach to design of self propelled sprayer with technical, esthetic, ergonomic and economic demands. The final design with it's modern and functional look should be an attractive element of agrotechnics. Another aim is also to fulfill social and psychological functions and address the public about protection of cultivated crops with emphasis on alternative energy and other uses of agricultural machinery.
|
|
|
Optimization of simulation parameters in the process of spraying a metal die
Vlček, Ondřej ; Šotka, Pavel (referee) ; Krutiš, Vladimír (advisor)
This thesis, prepared for Škoda Auto, deals with the optimization of die casting simulation parameters in software ProCast. The aim was to develop and validate a methodology for inputting die spray parameters. The optimization itself was performed on a high pressure die casting simulation for an engine block casting. The temperature field was taken from the real die using a thermographic camera and then compared with the simulation. The parameters of the simulation were adjusted according to the experimentally obtained data and literature, and the course of optimization required changing not only the parameters related to the external treatment, but also the material models, or changing the heat transfer coefficient between the die and the casting. By the procedure, the temperature field of the original simulation, which differed from reality by more than 100 °C, was optimised so that the results at the measured locations did not reach a difference of more than ± 20 °C. Therefore, the procedure used can be applied as the required methodology for optimising further simulations.
|
|
|
Výskyt vrtule ořechové a intenzita napadení ořešáku královského
Kabelková, Karolína
The occurrence of the walnut husk fly Rhagoletis completa was monitored in 2022 at 60 locations in the Czech Republic. The study was divided into two parts – Own experiment (5 locations) and the NAJDI.JE project experiment (55 locations), where two variants were tested - sticky traps (37 locations) and sticky traps with spray (18 locations). The occurrence was monitored mainly using yellow sticky traps in five periods. Part of the NAJDI.JE project experiment was the testing of the effectiveness of the spray, which contained the Mospilan 20 SP agent with the active substance acetamiprid and the food attractant Combi-protec. During the Own experiment, a total of 1,638 walnut fruit fly individuals were caught – most in Moravany (715). During the NAJDI.JE project experiment, a total of 28 680 individuals of the walnut husk fly were caught - the most in the South Moravian region (22 661). The highest average number of individuals per a sticky trap was recorded in Moravany (28,6) and South Moravian Region (19,86). The highest numbers of individuals were captured in the last, fifth period – Dvorska (227), South Moravian Region (6 545). The variant used and the height of the sticky trap placement had no effect on the number of captured individuals of the walnut husk fly. The experiment’s impact on fruit damage was confirmed regarding the variant. In both experiment variants (sticky traps vs. sticky traps with spray), the damage was reduced – sticky traps by 0,78 degrees, sticky traps with spray by 0,69 degrees. The experiment had an effect of increasing the yield in both variants of the experiment – sticky traps by 2,23 kg, sticky traps with spray by 12,54 kg. With regard to the variant, the effect of sticky traps was evaluated as follows – sticky traps (2,11), sticky traps with spray (2,2). For sticky traps with spray, the spraying efficiency was rated 2,7.
|
|
|
Otestování vlivu termínu aplikace růstových stimulátorů na efektivitu obrany dřevin vůči hemiparazitické rostlině jmelí bílé Viscum album L.
Javorský, David
This thesis focuses on finding the appropriate timing for the use of chemical defences to eradicate white mistletoe (Viscum album L.) using growth regulators designed for plant protection. The thesis is divided into two main parts, namely, the literature review related to the problem addressed and the practical implementation of the research. In the research, two growth regulators were applied in a regular interval of fourteen days between November and March. The results of this work, the showed effectiveness of the application of growth regulators used for mistletoe eradication in February. The efficacy of the two chemical agents used is different 73 % and 92 % over the entire period under study.
|
|
|
Optimization of simulation parameters in the process of spraying a metal die
Vlček, Ondřej ; Šotka, Pavel (referee) ; Krutiš, Vladimír (advisor)
This thesis, prepared for Škoda Auto, deals with the optimization of die casting simulation parameters in software ProCast. The aim was to develop and validate a methodology for inputting die spray parameters. The optimization itself was performed on a high pressure die casting simulation for an engine block casting. The temperature field was taken from the real die using a thermographic camera and then compared with the simulation. The parameters of the simulation were adjusted according to the experimentally obtained data and literature, and the course of optimization required changing not only the parameters related to the external treatment, but also the material models, or changing the heat transfer coefficient between the die and the casting. By the procedure, the temperature field of the original simulation, which differed from reality by more than 100 °C, was optimised so that the results at the measured locations did not reach a difference of more than ± 20 °C. Therefore, the procedure used can be applied as the required methodology for optimising further simulations.
|
|
|
Technické řešení závlahových systémů objektů zahradní architektury
Nový, Ondřej
This thesis was written at the Department of Horticulture techniques, Faculty of Horticulture, Mendel University in Brno. This work deals with irrigation landscape design objects and their characteristics. An automatic irrigation system is now more affordable than ever. The automatic irrigation system is expanding with the growing demand. There are a lot of companies at the market but the best of them are HUNTER, RAIN BIRD and TORO.
|
|
|
Design of Self-Propelled Sprayer
Sovják, Richard ; Paliatka, Peter (referee) ; Zvonek, Miroslav (advisor)
The main aim of this master's thesis is innovative approach to design of self propelled sprayer with technical, esthetic, ergonomic and economic demands. The final design with it's modern and functional look should be an attractive element of agrotechnics. Another aim is also to fulfill social and psychological functions and address the public about protection of cultivated crops with emphasis on alternative energy and other uses of agricultural machinery.
|
guest ::
