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Phloridzin content in selected apple varieties
Křehlíková, Jana ; Mikulíková, Renata (referee) ; Diviš, Pavel (advisor)
Phloridzin, a phenolic compound found in Malus genus, was targeted in this study for detection in apples and apple-based foods via HPLC. The research aimed to assess phlorizin’s potential as a marker for confirming apple presence in food, addressing food authenticity concerns. The methodology encompassed method optimization for sample preparation, considering solvent selection and oxygen impact on stability. Analysis revealed significant phloridzin distribution among apple varieties (Golden Delicious, Red Delicious, Granny Smith, Gala, Champion, Jonagold), averaging 17 ± 10 mgkg1. Further, 15 fruit products were surveyed for phloridzin content, with 5 non-apple-labelled foods also analysed. Phloridzin proved effective in detecting undeclared apple presence in jams, fillings, and fruit purees, highlighting potential for authenticity verification. However, fruit drinks and juices exhibited inconclusive results, suggesting a need for improved sample preparation and analysis methods.
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Motion Analysis
Hudec, Jiří ; Čmiel, Vratislav (referee) ; Sekora, Jiří (advisor)
Bachelor thesis is dealing with how to analyze human walk with Vicon camera system. In the first chapter are described elementary ideas for gait analysis and principal methods of Vicon system. There is also discussed basic layout of cameras in the laboratory and layout of markers attached at a human body. The second chapter is also about synchronisation of multiple cameras and description of CVS format. Further, in the third chapter are discussed four algorithms created in Matlab for a description of gait analysis. In the last fourth chapter are discussed the results of the software from Matlab and comparison these results with results made in the laboratory of gait analysis.
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Detector of Uniform Marker Fields for Windows Phone
Mašek, Jiří ; Szentandrási, István (referee) ; Herout, Adam (advisor)
This thesis deals with the detection of Uniform Marker Fields and the position of a camera in a space. The steps of the UMF detection, the Windows Phone 8 platform, DirectX working and the concept of augmented reality are described in the thesis. Implementation and design of the demo application together with the whole architecture of the project is described in the thesis. The result of the thesis is an application using the UMF detector and plotting a 3D object into a scene. Finally the application is tested and evaluated.
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Motion Analysis
Hudec, Jiří ; Čmiel, Vratislav (referee) ; Sekora, Jiří (advisor)
The thesis describes the optical camera system from Vicon, which records human movement. In medicine, this technology is used in laboratories for walk analysis. In collaboration with the laboratory in the Brno Faculty Hospital, two sets of anonymised patient results are analyzed by designed algorithms in Matlab. Algorithms were design for processing data in 2D and 3D views and to display kinematic joint analysis. The practical part evaluates the functionality of the proposed algorithms and compares them with results from the laboratory.
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Methods for searching and documenting optical cables
Havliš, Ondřej ; Křepelka, Václav (referee) ; Filka, Miloslav (advisor)
The purpose of this bachelor thesis is a description of searching for optical cables with metallic elements and EMS markers below the earth surface by suitable method and the possibility of recording and documentation of optical cables in a geographic information system ArcGIS. In the beginning there is a mention of an optical cable in particular of its the most important part, which is an optical fiber. Further there is the purpose what the optical fiber in the telecommunications world of techniques was developed for. Then there are the various advantages of the optical fiber described. This project also deals with the various methods of searching the optical cables using metallic elements. It is a called Galvanic and Inductive method, which are used to search for the optical cable by using the enclosed metallic lines, which, with the proper connection to a receiver, generates electromagnetic fields around. Another way to search the fiber optic cable is realized by the EMS markers. There are various types of passive electronic tags described. These electronic passive tags are manufactured in different color, which is used for marking the various branches of networks. There is the possibility of documentation of the optical cables by using ArcGIS geographic system from ERSI mentioned in the project. There is its structure and func-tion of individual subprograms in detail described. In the chapter GSM there is an analysis of operating principle of the system. At the end of this thesis the laboratory task is suggested. It describes the searching for fiber optic cable and the other metallic circuits by passive markers and iD markers.
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Flat Design Using Augmented Reality
Tuška, David ; Španěl, Michal (referee) ; Beran, Vítězslav (advisor)
This master's thesis is dealing with the usage of augmented reality for a layout of a flat proposition. The aim of this work is to create a system which detects markers on the walls using ARToolKit library. The position of the used in flat is determined by using the markers. Then the system disposes the user's position for operate with a camera in a 3D modelling program called Google SkretchUp. The system is consisted of a server and a client part. The server one copes with the incoming video in which it detects the markers and evaluates the position of user by the help of the markers. The client part of the system is represented by a plugin module for 3D modelling program Google SkretchUp. A client is asking the server for the positions of the user in the flat model and consequently he set the camera in the program Google SkretchUp according to these positions. The client is also asking for the individual pictures from the video which he shows against the background of Google SketchUp and thanks to this, he creates a view of a real scene extended of virtual objects.
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Uniform Marker Fields for Android
Salát, Marek ; Szentandrási, István (referee) ; Herout, Adam (advisor)
This thesis deals with a desing and an implementation of a detector for Uniform Marker Fields and a debugging appliaction for Android mobile devices. Implementation comes with alternativ methods in considiration of original solution, suitable for low-performance devices. The main goal of detector is find a position and a rotation of marker module or alternatively a position of the camera in real space. The resulting soulution can be also used as a library for the marker module detection or as a core for augmented reality based application using Uniform Marker Fields.
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Uniform Marker Field on a Cylinder
Kříž, Radim ; Havel, Jiří (referee) ; Herout, Adam (advisor)
This work presents a new extension for Uniform Marker Field, which is able to detect UMF on the cylinder. First part of the text deals with Augmented reality and focuses on systems using markers. It discusses the actual state-of-the-art systems and its possibilities. After that it focuses more deeply on the marker system Uniform marker field and its grayscale variants. Next part of the work describes properties of the cylinder projected in real space. Important properties for detecting are discussed in detail. Then the proposal and description of detection algorithm is presented. Implementation of algorithm is tested and evaluated on the very end of this thesis.
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Comparison of architectures of MIB system databases designed for QoS management in data networks
Jelínek, Tomáš ; Hošek, Jiří (referee) ; Molnár, Karol (advisor)
Bachelor thesis deals with Diffserv mechanism for Quality of Service in data network and goes through several parts of structure MIB database for managing Diffserv mechanism. The first chapter is introduction. I explain SNMP protocol in the second chapter. In the third chapter I deal with Quality of Service (QoS) and in the next chapter I explain Diffserv mechanism and its architecture. In fifth chapter I present possibilities of using Policy Information Base (PIB). I show several parts of MIB database in the sixth chapter. I compare two parts of MIB database and summary whole work in the last chapter.
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