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Advanced techniques of micromachining
Šalomoun, Vojtěch ; Prášek, Jan (referee) ; Pekárek, Jan (advisor)
Fabrication of micro-electro-mechanical systems (MEMS) requires advanced level of miniaturization, which is not achievable by technology used in microeletronics. Socalled micromachining covers many unique techniques of material processing to get microstructures with possible dimensions below 1 m. This bachelor’s thesis gives a general introduce to micromachining of MEMS. Its focus is on bulk and surface micromachining by wet and dry etching. The practical part contains design of microstructures, their manufacturing process and creation of computer models in CoventorWare suite.
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Design of container for bulk transport
Cihlář, Milan ; Lošák, Pavel (referee) ; Létal, Tomáš (advisor)
The topic of this work is industrial usage of ISO containers and their classify. Other part is about construction a stress analyses of container type 1C (length is 20 feet) which is used to a bulk transport. The software Ansys was used to stress analyses. In this analyses was used only simply model which don´t have filling and emptying aperture etc. In results was controlled maximum stress in the all elements.
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World maritime shipping at the beginning of 21. Century
Bubnová, Kateřina ; Romancov, Michael (advisor) ; Kučerová, Irah (referee)
The bachelor thesis deals with the world's maritime trade at the beginning of the 21st century. This thesis deals with the development during the 19th and 20th centuries from the point of view of progress, which influenced the modernization and progress in this area, the 20th and 21st century from the economic point of view, how the volume of goods transported changed. Segmenting cargo vessels is another important chapter, splitting into groups and subgroups, allows a better view of types of merchant ships. It also examines international organizations that are very important for determining and adhering to the rules. The chapter on Maritime Policy deals with environmental policy, balancing the goals of sustainable development and economic objectives of countries. The second part of the chapter deals with the issue of maritime piracy, which greatly hinders maritime trade. It focuses more on Somali piracy, although it is not currently the main danger area, so it has its own specifics. The last part deals with the most important ports as the basic components of maritime trade. Navy trails are linked to the New Silk Road, a project of the People's Republic of China, which could change the sea routes, considering new ports.
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World maritime shipping at the beginning of 21. Century
Bubnová, Kateřina ; Romancov, Michael (advisor) ; Kučerová, Irah (referee)
The bachelor thesis deals with the world's maritime trade at the beginning of the 21st century. This thesis deals with the development during the 19th and 20th centuries from the point of view of progress, which influenced the modernization and progress in this area, the 20th and 21st century from the economic point of view, how the volume of goods transported changed. Segmenting cargo vessels is another important chapter, splitting into groups and subgroups, allows a better view of types of merchant ships. It also examines international organizations that are very important for determining and adhering to the rules. The chapter on Maritime Policy deals with environmental policy, balancing the goals of sustainable development and economic objectives of countries. The second part of the chapter deals with the issue of maritime piracy, which greatly hinders maritime trade. It focuses more on Somali piracy, although it is not currently the main danger area, so it has its own specifics. The last part deals with the most important ports as the basic components of maritime trade. Navy trails are linked to the New Silk Road, a project of the People's Republic of China, which could change the sea routes, considering new ports.
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The chemistry of atmospheric deposition at selected locations of Zlin Region
Zádrapová, Dagmar ; Vach, Marek (advisor) ; Sychová, Petra (referee)
Atmospheric and environmental pollution caused by heavy metals is nowadays one of the major environmental topics. Even though some of the heavy metals represent important trace elements for most of the organisms, their danger lies particularly in their toxicity which occurs even with little concentrations of the element, as well as their ability of bioaccumulation in food chains (Braniš, 2011). The sources of heavy metals in the atmosphere have natural and anthropogenic origin, however most of the emissions originate from the anthropogenic ones. Contamination of the atmosphere has a global character. Starting back in the 1970s, there has been a continuous reduction of heavy metal emissions in Europe (Pacyna, 2007). According to ČHMÚ (2015), one of the most polluted areas in the Czech Republic is currently Ostrava/Karviná/Frýdek-Místek agglomeration.
The aim of this thesis is to analyse and assess the results of selected heavy metals (Cd, Cr, Cu, Ni, Pb, Zn) measurement in total atmospheric deposition, which had been collected at selected localities in Zlin Region. The localities were chosen based on an assumption that the building density can impact the composition of the atmospheric deposition and its potential contamination with heavy metals due to the presence of combustions from residential units. Bulk collectors were chosen for this research and they were continuously exposed at the localities and therefore apart from liquid vertical precipitation, the samples contained also a non-defined amount of dry deposition.
The results of the measurement did not firmly confirm the original hypothesis. Incidence of most of the metals (Cr, Cu, Ni, Zn) was only minor. An enormously high concentration of Cd and Pb occurred in one of the samples, but not repeatedly during next sampling period. This can be considered an extreme which happened because of a random cause.
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Advanced techniques of micromachining
Šalomoun, Vojtěch ; Prášek, Jan (referee) ; Pekárek, Jan (advisor)
Fabrication of micro-electro-mechanical systems (MEMS) requires advanced level of miniaturization, which is not achievable by technology used in microeletronics. Socalled micromachining covers many unique techniques of material processing to get microstructures with possible dimensions below 1 m. This bachelor’s thesis gives a general introduce to micromachining of MEMS. Its focus is on bulk and surface micromachining by wet and dry etching. The practical part contains design of microstructures, their manufacturing process and creation of computer models in CoventorWare suite.
|
|
|
Design of container for bulk transport
Cihlář, Milan ; Lošák, Pavel (referee) ; Létal, Tomáš (advisor)
The topic of this work is industrial usage of ISO containers and their classify. Other part is about construction a stress analyses of container type 1C (length is 20 feet) which is used to a bulk transport. The software Ansys was used to stress analyses. In this analyses was used only simply model which don´t have filling and emptying aperture etc. In results was controlled maximum stress in the all elements.
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