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Effect of low doses of herbicide paraquat on antioxidant defense in Drosophila
SÁBOVÁ, Michala
Disruption of cell equilibrium between production of free radicals and antioxidant defence is named oxidative stress. The main component of antioxidant mechanism is activity of antioxidant enzymes, which include superoxide dismutase (SOD) and catalase. In this study we evaluated the effect of herbicide paraquat on response of SOD and catalase, their transcription level and locomotion activity in Drosophila melanogaster. We exposed the flies to a wide range of paraquat concentration. Our results revealed that transcript and enzymatic levels of both SOD and catalase have a similar biphasic dose response with the peaks at 2,5 ?M paraquat concentration, resembling hormetic effect. Then, males were more sensitive than females. However, females had an increased locomotion activity. We found that paraquat susceptibility is increased in males and mating flies. Therefore, this study supports hypothesis of stress sensitivity elevation as a physiological cost of reproduction.
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Environmental variables acquisition and evaluation
Ulrych, Vladislav ; Vasilenko, Alexandr (advisor)
The first part of thesis is devoted to the environment of the room in which is monitoring device intended - server room. There are description of calculating algorithms for proper sizing of cooling due to the heat. Further in this part is description of suitable senzors for monitoring device - physical principle, their proper use and meaning. Theoretical part also contains a list of several available ready commercial solutions of monitoring stations and their characteristics.
The second part is devoted to the assembly of monitoring device - physical build of hardware components, preparation s and connecting sensors, operating system installation, configuration and network preparation. The second part contains also instaling web server and configuration parts, that allows amek a web interface with presentation of measured physical quantities. Integration device with Simple Network Management Protocol (SNMP) for use with Zabbix monitoring system. Output from this work can be used for monitoring fundamental physical quantities in a small server room or in switch room.
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Stirling engine
Blažek, Petr ; Hromádko, Jan (advisor) ; Mařík, Jakub (referee)
The aim of this thesis is to introduce the Stirling engine, to evaluate its potential use in practice and to propose possible further development in this area. The first part is devoted to the historical development of the Stirling engine. The next part contains brief explanation of its function, describes the individual components, introduces all modifications and evaluates the main advantages and disadvantages. The last part deals with the use of the engine with respect to its properties, structure and possible design.
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Strategy of the Innovations of Vehicle Inspection Emission Stations
Marušková, Helena ; Růžička, Miroslav (advisor) ; Tichá, Ivana (referee)
The doctoral thesis Strategy of the Innovations of Vehicle Inspection Emission Stations is engaged in marketing strategies and innovations of the vehicle inspection emission stations in the Czech Republic. The theoretical part is dedicated to the references and describes marketing environment, SWOT analysis, marketing strategies, marketing mix and several "P". It also focuses on the innovation and innovation strategies, the different types of marketing research, the exhaust emissions of combustion engines, the homologation regulations and the periodic emission measurements at the vehicle inspections emission stations in the Czech Republic and in the world. The aim of this thesis is to describe and analyze the current situation and work up a strategy of the innovations of vehicle inspection emission stations.
The practical part is devoted to analysis of the marketing environment (PEST analysis and the microenvironment), from which a SWOT analysis of vehicle inspection emission stations and further describes the individual components of the marketing mix SME. The chapter Marketing research SME is divided into quantitative and qualitative marketing research, which lists the various questions, charts and answers resulting from marketing research. Quantitative research is conducted through a questionnaire survey and qualitative marketing research obtains answers based on structured interviews.
The paper concludes with several suggestions of the innovation, evaluation of research questions and a summary of the individual chapters, which shows that too stringent emission limits will not lead to their real reductions. Regular tests for SMEs are set up properly and does not need to be changed. Creating a central information system (one for both STK and SME) and the implementation of video surveillance - these changes are needed not only for technical inspections stations, but also emission inspection stations. Due to the increasing number and age of vehicles and especially the fact that the current emission tests of vehicles in no-load mode engines are not able to detect all faults, the new methodology of measure emissions is needed.
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Configuring Linux Mail Server
Babický, Karel ; Pícka, Marek (advisor) ; Mikoláš, Mikoláš (referee)
The aim was to configure a Linux mail server, which should serve as a complement to web hosting, therefore should be able to serve multiple domains at once. The next task was to test the server base.
The theoretical part explained how email works, describes the steps that occur from sending to receiving message. They described the various components of the mail server. Furthermore the most important protocols have been described, what purpose they have, how they work and at which ports they operate.
In the practical part was at first selected a suitable solution mail server. Postfix server and additional necessary components were chosen eventually. Dovecot was installed to manage mailboxes and IMAP implementation. ClamAV antivirus and antispam BitDefender were installed as protection. Step-by-step changes in the setting were described. The solution has been tested for security.
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Development of mobile application for Android platform
Homola, Radek ; Šimek, Pavel (advisor) ; Stočes, Michal (referee)
The bachelor thesis describes the process of mobile application development for operating system Android with exclusive using of standard components, which this platform includes. The theoretical part of thesis describes the platform itself, historical evolution of its versions, its architecture, tools required for the application development, general structure of the application project and fundamental, commonly used programmatical and graphical components. Practical part of thesis then documents the development of functional application prototype, based on knowledge of theoretical part. Practical part also includes recommendations, how to achieve responsive graphical user interface. Complete application source code is attached to the thesis.
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Computer network at home
Grunt, David ; Vokoun, Tomáš (advisor) ; Šmejkalová, Martina (referee)
This thesis is about the domestic computer networks and the requirements awarding in this surroundings. Gradually, describes the history of the computer network of networks, the various topologies to the structure itself. The network is carried on copper cables category 5e, and using wireless technologies. There is also a description of the reference model ISO/OSI and TCP/IP as well as with its architecture. There are explained both active and passive network elements as those who are employed, and more. The practical part is an analysis to choose the hardware device. After processing, analysis equipment is designed for home network households, including a description and possible future expansion easy. As a major step described herein, the overall structure of the network, including domestic repository and test a network. Outcome of this work is to design a home computer network, for the majority of households using older hardware components and minimized financial workload.
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Network storage and backup at home network
Beneš, Ladislav ; Vokoun, Tomáš (advisor) ; Junek, Pavel (referee)
The bachelor thesis deals with networked storage solutions for data backup and data in the home network. The theoretical part contains information relating to backup and data archiving. Further described herein are storage media. Finally, they describe home network components and the components connected to it. In the home network is a more detailed description of the NAS and familiarity with the issues. The practical part was designed to analyze networks in Czech households. Propose and describe specifically defined household and then select the appropriate device, which was compared with other devices on the market. This corresponds to the most common household defined requirements from the analysis of Czech households. According to a questionnaire created for Czech households shows that cash is sufficient NAS solutions with the features and performance requirements of mainstream users.
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Foreign Trade in Petrochemical Industry of Iran
Bassam, Abdoljabbar ; Maitah, Mansoor (advisor) ; Anna, Anna (referee)
Iran's economy is characterized by over dependence on the oil sector. Iran has been gradually growing into a centre for production of petrochemicals in the world. Petrochemical industry is one of the significant components of oil industry and is one of the principal industries in Iran which has an influential role in Iran's economy. Although it is widely acknowledged that exports, particularly through manufactured components, play an important role as a potential source of economic growth. Hence, the aim of this research is to analysis the impact of petrochemical products export revenue on economic growth. Therefore the main objective of this research is the study of export-led growth hypothesis (ELG hypothesis) of Iran's economy in the petrochemical industry by taking a time series data for the period of 1990-2010. It applies ordinary least square (OLS) method to investigate the relationship between gross domestic product, exports of petrochemical products, real exchange rate and inflation. The results of the study show that there is a positive relationship between export of petrochemical products and economic growth which validate export-led growth hypothesis in petrochemical industry while negative impact of inflation and real exchnage rate is observed. Furthermore, in this study SWOT analysis of the Iran petrochemical industry is presented.
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