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Influence of plasma activated water on seed germination and quality of corn
Kovařík, Martin ; Zlámalová Gargošová, Helena (referee) ; Kozáková, Zdenka (advisor)
The bachelor's thesis deals with the effect of plasma-activated water on corn germination. After water comes into contact with plasma, the water changes its chemical composition and thus, it acquires new properties that can be used in agriculture. The theoretical part is divided into two basic parts. At the beginning of the first part, plasma is briefly characterized, and then this part deals with plasma-activated water, its formation, physical and chemical properties, and at the end of this part, its use. The second part of the theoretical part is devoted to the germination of plants, external influences affecting germination and statistical evaluation of germination. At the end of the theoretical part, this thesis deals with the ecotoxicity of plants. The content of the experimental part was the preparation of PAW, its subsequent application to corn seeds and the study of its effect on germination and plant quality. PAW was created from distilled or tap water using three different plasma systems and the effect of each PAW on the seeds was compared with that of each control sample. The obtained results indicate a positive effect of PAW on seed germination, but the final hypothesis would require more extensive experiments in different environments, especially in soil.
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Assessment of the intake of vitamins in lactating women
Burešová, Nicole ; Kovařík, Miroslav (advisor) ; Kudláčková, Zděnka (referee)
Charles University, Faculty of Pharmacy in Hradec Králové Department: Biological and Medical Sciences Tutor: PharmDr. Miroslav Kovařík, Ph.D. Student: Nicole Burešová Title of thesis: Assessment of vitamin intake in lactating women Background: This theses focus to evaluate vitamins intake of lactating women. A sufficient vitamins intake is very important for both mothers and their infants. The aim of this theses was an assessment of lactating women vitamins intake without and including vitamins supplementation. It was determined whether the intake of individual vitamins changed with the duration of lactation, and then the average intake values were compared with the recommended daily allowances (RDA). Finally, the proportion of women who did not meet the RDA was evaluated. Methods: Data collection for this study took place in 2021-2022. There were eleven lactating women between years of age 29 and 40 involved. These women underwent medical examinations at laboratory four times after the delivery - during L1 lactation period (3-4 weeks after the delivery), L2 period (3 months after the delivery), L3 period (6 months after the delivery) and finally L4 period (9 months after the delivery). During the L1 and L2 periods the questionnaires were submitted by 9 women, during L3 period by 10 women and...
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Creating a VPN Access Point on Raspberry Pi
Kovařík, Martin ; Hájek, Jaroslav (referee) ; Benedikt, Jan (advisor)
This bachelor thesis deals with creating a virtual private network (VPN) access point on a single-board Raspberry Pi computer. The theoretical part describes the principle of VPN, the most common tunneling protocols and the Raspberry Pi computer in general with its various generations and models. Selected protocols are implemented on the Raspberry Pi and their hardware load, response and throughput are measured. The stability of the protocols is tested and reliability evaluated.
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Coilgun
Kovařík, Martin ; Pavlík, Michal (referee) ; Šteffan, Pavel (advisor)
This bachelor’s thesis describes the design and construction of electromagnetic gun for testing projectiles from different ferromagnetic materials with maximal power 19 J. Conventional projectile propulsion mechanisms include the use of compressed air or explosion which places theoretical limits on the maximum muzzle velocity limited by laws of thermodynamics. The electromagnetic coil gun, explores the use of electromagnetism in accelerating projectiles which offers a much higher theoretical limit on muzzle velocity. In addition of an electromagnetic acceleration is possible to regulate output velocity/energy of projectile, and acceleration applied on projectile.
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Antispam software plugin for e-mail filtering based on geolocation of the sender
Kovařík, Martin ; Komosný, Dan (referee) ; Caha, Tomáš (advisor)
This thesis deals with the creation of a module for antispam software providing email filtering using sender geolocation. The theoretical part of the thesis describes spam in general and the threats that spread through email communication, such as social engineering and malware. Then the principle of email and email headers, email filters and their methods to filter messages are described and lastly IP geolocation and machine location methods are described.The created filtering module Geolock was designed for the SpamAssassin antispam software and uses the IP2Location geolocation database. The embedding of the module into SpamAssassin is shown and the module itself and its different parts are described. The module is tested on a dataset and a real-life application is outlined. The Geolock module is published on GitHub under the MIT license (https://github.com/MartinKovarik/Geolock).
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Library for Multiplatform Development of Mobile Apps
Kovařík, Michal ; Sochor, Jakub (referee) ; Herout, Adam (advisor)
This thesis addresses the issues when developing mobile applications for multiple operating systems and development environments, with the target being to create the ideal user interface library. A framework for HTML app development has been designed and implemented that is built on top of modern web standards, allowing the developer to create applications with a single codebase that will, when deployed, intelligently adapt to the device and operating system that they are being run on. Released as an open-source project and currently supporting Windows 10, Android, Chrome OS and Web. Flexus, a framework for building user interfaces, is in live use and active development.
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Magnetic separator for recycling construction and demolition waste
Kovařík, Martin ; Zeizinger, Lukáš (referee) ; Škopán, Miroslav (advisor)
This work contains a search of available equipment for the separation of ferromagnetic material and the design of a specific design solution of a magnetic separator for the recycling of ferromagnetic waste from construction and demolition waste. According to the entered parameters, the calculations necessary for the correct design of the machine were performed. Part of the work is drawing documentation of selected parts and assemblies of the device.
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