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Voltammetric Determination of Nimesulide at a Polished Silver Solid Amalgam Electrode
Koščová, Kristína ; Vyskočil, Vlastimil (advisor) ; Fischer, Jan (referee)
This bachelor thesis focuses on investigating the electrochemical behavior of the substance nimesulide. The stability of the stock solution was monitored using UV-VIS spectrophotometry. A solid silver amalgam electrode with a polished surface was chosen as the working electrode, a silver chloride reference electrode (3M KCl), and a platinum auxiliary electrode were used. For the techniques of DC voltammetry (DCV) and differential pulse voltammetry (DPV), optimal conditions for the determination of nimesulide were sought (optimal pH, range of regenerative potentials). The calibration dependence was measured in concentration ranges of 10−7 , 10−6 , and 10−5 mol/L. In the case of DCV, a linear calibration dependence was achieved in the concentration range of 1-100 μmol/L (with a limit of detection (LD) ≈ 0.27 μmol/L and with a limit of quantification (LQ) ≈ 0.91 μmol/L). In the case of DPV, linearity was achieved in the range of 4-100 μmol/L (LD ≈ 0.60 μmol/L and LQ ≈ 2.0 μmol/L). The developed voltammetric methods were used to determine nimesulide in drinking and well water and in pharmaceutical forms of Nimesil 100 mg and Aulin 100 mg.
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Structured Data on the WWW
Pátek, Daniel ; Hynek, Jiří (referee) ; Burget, Radek (advisor)
This thesis focuses on the semantic web, its key technologies, and the representation of structured data on the web. It explores standard formats like RDF and OWL, methods such as JSON-LD, and knowledge databases including Wikidata and DBpedia. It addresses the extraction, visualization, and linking of structured data with external databases. The primary goal is to develop an application that facilitates efficient work with structured data and their integration with knowledge bases.
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Design of optical amplifier
Somora, Rastislav ; Číž, Radim (referee) ; Slavíček, Karel (advisor)
This Bachelor's thesis deals with design and construction of support circuits for a modern optical amplifier the SOA. In the first chapter, optical transmitting medium with its physical properties and types of used cabels is described. The overview includes a list of optical cables, their damping properties and parasitic effects which can occur durring comunication. Next chapter is focused on the optical signal sources used in modern data networks, describes their internal structure and physical essence. Third chapter is dedicated to designing the optical amplifier with the SOA circuit. It focuses on the right choice of parts, their arrangement and layout of the design. Last chapter deals with set up, calibration and control of the optical amplifier module.
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Design of semiconductor optical amplifier
Somora, Rastislav ; Hanák, Pavel (referee) ; Slavíček, Karel (advisor)
Diploma thesis deals with the construction of a moder semiconductor optical amplifier SOA. In the first chapter optical comunication and the use of optical amplifiers is described. In the next chapter some types of optical fibers, their chemical composition and properties are described in detail. The third chapter overviews optical amplifiers, their use today, describes their advantages and disadvantages and their proper use in optical comunications. The fourth chapter describes the solution of the objective, the right layout of separate blocks and connections used in measurements. Fifth chapter describes used components, describes their basic parameters and proper use in circuit. The last chapter evaluates outputs of measurements and their impact on the objective.
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Analysis of the electrical power measurement system in the local distribution network Pod Palackého vrchem
Hájková, Barbora ; Orságová, Jaroslava (referee) ; Jurák, Viktor (advisor)
The diploma thesis introduces a detailed analysis of the local distribution system (LDS) Pod Palackého vrchem (PPV) in the Brno, parameters of power transformers and cable routes between them. The elements of the electrical network that are influencing the balance of reactive power are described along with its sources and appliances. In the next part is defined the present concept of long-term measurement in the LDS by using current and voltage sensors. This part deals with calculations of power losses in the power transformers and the cable lines together with uncertainties concerning power measurement in the field of energetics. The essential part of the thesis focuses on the analysis of the temporary measurement implementation in the LDS, data processing along with the comparison of measured values from temporary measurement with values from permanent measurement. In conclusion, the error of the system is determined.
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LD Seating production hall - construction technology project
Jůzl, Martin ; Dvořák, Miloslav (referee) ; Biely, Boris (advisor)
The aim of the diploma thesis is a building-technological project on the production and assembly hall LD Seating in Boskovice u Brna. The solution is influenced by the existing hall in the area of the investor, where there will be a future new building. Based on this fact, the appropriate measures are chosen. The project puts emphasis on the off-road transport and the technological process of assembly of the prefabricated reinforced concrete hall, which will be solved from the financial and time point of view. The workflow will be affected by machine assembly, site facilities, and wider transport relationships. The project also solves the concept of the whole issue as a whole. All building objects are taken into account. Based on this, an object schedule and budget are developed.
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Optical transmitter design
Vraspír, Marek ; Křivák, Petr (referee) ; Hudcová, Lucie (advisor)
This work dissert on proposal of optical ampifier excitor for transmission of information using optical enviroment. For proposition was chosen suitable transmission enviroment and LD diode that is used in optical communications. Accent was put at universal using of diode. Than was solved the modulation of input signal, it is used the „on-off“ keying, which is proceeded by integrated circuit, which is designed for none extreme transmission speeds. The work contains the solution of the potection of electrical circuit and LD diode against high current and thermal influences in transmitter.
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Web Interface of a Document Analysis Tool
Ševčík, Adam ; Hynek, Jiří (referee) ; Burget, Radek (advisor)
This thesis deals with the development of a web interface of a web document analysis tool. Goal of this interface is to replace old desktop application FitLayout. Own front-end is added to FitLayout back-end. This application is made by Javascript, HTML and visual part is done by CSS and framework Bootstrap. Web documents are in format RDF serialized in JSON-LD. Data are exchanged in the same format between client and server. Result of this thesis enables user to analyse documents in browser same way as in desktop application.
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Communication Interface for Industry 4.0 testbed
Magáth, Marek ; Fiedler, Petr (referee) ; Kaczmarczyk, Václav (advisor)
This diploma thesis deals with the creation of a general communication interface between the smart product and process cells within test bed Barman. The aim is to create distributed production according to the Industry 4.0 concept, where each product manages it’s production itself. The first part deals with the analysis of test bed, where are discussed requirements and method of production. Then with the selection of a communication protocol that would meet Industry 4.0 and distributed control requirements. The result of the research was OPC UA communication protocol. Using this protocol, the product and the process cell will communicate with each other. I chose the appropriate implementation for the selected protocol to be used for creating communication modules of the product and the process cell. Production data will be stored in an RFID chip located in the product. Part of the work is devoted to creation this data structure, which contains the recipe as well as production state data. Creation of RFID reader is the work of another student, with whom I solved the method of data exchange between application of the reader and the communication module of the product. When creating a communication module of the process cell, I solved the design of an information model that describes the entire process cell, and the dynamic creation of nodes in the address space. I have mentioned a few examples of how I worked with a selected implementation of OPC UA and how I used it in both applications. I implemented decentralized search of another process cells in the local network. This feature was easy to implement with OPC UA, specifically with the LDS-ME service. I solved the control of production for the communication module of the product and method of communication with the process cell. And in the last part I deal with manual, which describes how to compile projects correctly, specifically on the Linux operating system, and I have described a way to test the whole solution together with the results.
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Influence of filters on running of metal flow
Makalouš, Jakub ; Veverka, Aleš (referee) ; Roučka, Jaromír (advisor)
This study deals with influence of filters on running of aluminum metal flow. The main objective was to describe hydraulic resistances of assorted filters and running of silting filters by inclusions. Theoretical part generally describes filtration process and also filtration from the point of view of aluminum alloys and the most important characteristics of each type of alumina inclusions. Experimental part deals with flow rate tests, influence of filters on gassiness of melt and metallographic analysis. It was find out, that filter GEPHAL made minimal hydraulic resistance, on the other hand ceramic foam filters type LD made the maximal hydraulic resistance. It is necessary to reduce filtration surface for study running of silting filters by inclusions. Metallographic analysis showed amorphous alumina film inclusions, spinell Al2O3.2MgO, sludge and carbide of silicon.
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