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Deposition of Titania from Solution by Hybrid Water-Stabilized Plasma Torch
Mušálek, Radek ; Medřický, Jan ; Tesař, Tomáš ; Kotlan, Jiří ; Lukáč, František
Thermal spraying with liquid feedstock presents a novel route for deposition of functional coatings. In this study, possibility of preparation of titania coatings from solution by hybrid water stabilized plasma torch is presented. Coatings were prepared from solution of titanium isopropoxide Ti[OCH(CH3)2]4 in anhydrous ethanol. Fragmentation of feedstock stream in the plasma jet was monitored by shadowgraphy. Deposition was carried out on steel samples mounted to the cooled rotating carousel. Cross-sectional images from SEM microscope showed successful formation of the deposit with dual morphology consisting of fine feather-like features combined with bigger droplets. X-ray diffraction revealed formation of nanometric rutile crystallites.
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Black Chromia Coatings on Metal Tubes for the Solar Collectors
Brožek, V. ; Mastný, L. ; Novák, M. ; Vilémová, Monika ; Kubatík, Tomáš František
This paper describes the results of the first phase of the study preparation, structure and properties of coatings modification of black chromium oxide on copper, aluminium, iron and zirconium tubes for solar collectors. The coatings are prepared by plasma spraying of liquid chromate method which is known as liquid precursor plasma spraying. Coatings have the function of an energy trap for thermal radiation wavelengths of 1 μm – 3 μm i.e. in the IR region. At the same time, the coating increases the corrosion resistance of metal substrates. The nanometric structure and thickness of the coating depend of the feeding distance and the concentration of chromate precursors. For the deposition of nanometric splats of melt chromiumIII oxide, a new type of feeder that injects precursors into the water stabilized thermal plasma produced by the WSP® generator has been\ndeveloped.\n
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The Liberation of Pilsen 1945 in Photography
Křenová, Tereza ; SILVERIO, Robert (advisor) ; JANOŠČÍK, Václav (referee)
This bachelor thesis deals with liberation of Pilsen in May 1945 by american army in photography. The aim of this thesis is finding and collecting archival materials and placing them in a historical-political context. Communist regime changed the portrayal of historical events and directly influenced the amount of exisiting photographs, documents and lives of those who created them. Important part of this bachelor thesis is working with those archival materials – particularly with photographs capturing arrival of Americans and their stay in Czechoslovakia at the end of WW2. Both professional and amateur photographers created valuable photographs as they witnessed the liberation of Pilsen. These photographs became in spite of communist propaganda a clear evidence that Pilsen was liberated by american army.
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Bob Krčil
Douša, Jan ; MOUCHA, Josef (advisor) ; Buddeus, Hana (referee)
The life and work of Bob Krčil have so far been known from fragments and unsubstantiated legends. The aim of this essayistic piece is to lay out the deeper motives of his personal trajectory, photographic oeuvre, and activities for the Czech exile community. Krčil’s photographic body of work is inseparably connected with his eventful life. The writing of the thesis was preceded by tracking down and putting together Krčil’s fragmented estate, sorting out his correspondence and writings, and interviewing people who knew him personally. By drawing on these materials, the thesis aims to provide insight into the life and motivations of this important figure of Czech exile culture.
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The Role of Nurses in Colorectal Surgeries
ŠULCOVÁ, Jana
Theoretical basis: The problems in rectal and anal diseases have had rising tendency, especially haemorrhoidal diseases, on which we put emphasis in our bachelor thesis. 37% of adult population suffers from this disease so we may line it up to civilization illnesses. Their treatment involves wide range of medical methods, from the conservative therapy to semi invasive ways of treatment. The semi invasive treatment is well withstood by patients and it can help up to 90% of clients. This bachelor thesis is concerned with specifics of nursing duties in a colorectal surgery. It links with topics like taking faecal specimen, basic methods of endoscopy, communication with patients and giving them information about lifestyle. The theoretical basis describes haemorrhoidal disease and gives brief introduction into causes of its developing, most common symptoms and possible treatments. The aim of the thesis: From the practical point of view we set two tasks. The first one is aimed at specifics of nursing job in a colorectal surgery and the second one tries to monitor how nurses in colorectal surgeries inform patients about healthy lifestyle. We asked two research questions regarding these aims. The first research question is: What are the specifics of the nursing job in the colorectal surgery? The second question concerns how nurses in colorectal surgeries provide information to their patients about healthy lifestyle. Methodology: Regarding the bachelor thesis we decided to choose a form of a qualitative research with using semi structural interviews with practical nurses working in colorectal surgeries. The interviews took place from February 28 2014 to March 15 2014 in five colorectal surgeries in following towns: České Budějovice, Písek, Strakonice, Jindřichův Hradec a Třemošná u Plzně. The focus group was created of 6 nurses working in colorectal surgeries. The interviews were performed and recorded with the consent of all practical nurses involved in the research. All extracted data was arranged and categorised into groups that were consequently analysed. The interviewer´s questions were prepared in advance and some extra questions were asked during the interview. The interview was divided into five areas: Identification questions, role of a nurse, examination methods, recommendation and giving information about lifestyle. Results: The results show the specifics of nursing in colorectal surgeries. We found out that nurses working in colorectal surgeries deal mainly with preparing special medical instruments and devices needed for endoscopic examination. Then they assist doctors during a medical examination and with treatment methods of RBL (Barron´s rubber band ligation) and Hemoron, they manipulate with devices in a surgery, check hygiene measures, do administrative work and keep surgery office running. In other conversation areas practical nurses mostly mentioned sampling of biological materials, mainly blood and faecal specimen taking to be given up to histological examination, preparing patients for an endoscopic exam, communication with patients and attending to the intimacy of patients. Consequently we found out that more than half of the practical nurses pay attention to psychological conditioning of the patient before rectoscopy. The research also revealed some weak spots. More than half of the nurses in the focus group do not inform patients about preparations before anoscope exam. Barely one third of the group said that they inform patients about the natural emptying before the exam. Regarding the issue of giving information about lifestyle, we came to the conclusion that practical nurses, even though they do not have enough time, try to inform patients about physical activities, hygiene care and quality of eating and they do it in sufficient rate. But because of the time constrain they put emphasis only on the essential information.
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Sorption and Stabilization of Metals/Mettalloids by Innovative Synthesized Sorbent Amochar.
Ouředníček, P. ; Trakal, L. ; Komárek, M. ; Pohořelý, Michael
Remediation of contaminated soil which is based on stabilization and immobilization of potential\nhazardous substance by sorption materials has been studied intensively nowadays. Biochar – activated organic carbon belongs to this group of stabilizing agents which can adsorb wide range of contaminants, including metals/metalloids. Surface area of the biochars is quite large in general and functional groups (e.g. COO–) can form chelates or alkaline elements on the surface, which is represented by cation exchange capacity. Altogether with the high pH values (7.00 – 10.00), biochars are quite effective sorbents and can adsorb metals/metalloids from the solution (ground water), especially in acidic soils (in the environments affected by intensive mining activities). Sorption\neffectiveness can be increased (especially for As (V) or Cr (VI) sorption) by modification of biochar by various types of secondary oxides. Innovative sorbent AMOchar (AMO + biochar) has been synthesized currently. The product was prepared by adding of biochar to the reaction solution during amorphous manganese oxide (AMO) synthesis. The AMOchar was formed mainly by Mn-oxalates which had coated surface of the pristine biochar. AMOchar composite was able to remove significantly higher amounts of various metal(loid)s from the solution despite the rather high pH of the material. Sorption effectiveness was high not only in case of Pb (II) sorption (almost 99%), and Cd(II) (51.2%), but also a very high amount of As(V), 91.4%. Additionally, both AMOchar composite was able to reduce Mn leaching. This can avoid potential post-contamination caused by the dissolution of less stable Mn-oxalates as observed in the pure AMO.
Fulltext: content.csg -  PDF
Plný tet: SKMBT_22316111113040 - PDF
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Plasma spraying from liquids: plasma liquid interaction and coating build up
Tesař, Tomáš ; Mušálek, Radek ; Medřický, Jan ; Lukáč, František
Plasma spraying from liquid feedstocks is a rapidly developing field of thermal spraying since the coatings prepared from liquids exhibit some unique features, such as high hardness, thermal shock resistance or low thermal and electric conductivity. The key factor influencing the final coating character and properties is the input material which may be in the form of a suspension or a solution. Parameters of the selected suspension (solids concentration, viscosity, surface tension, chemical composition, etc.) or solution (concentration, etc.) determine its interaction with the plasma jet which strongly influences the coating buildup. This proceeding introduces the problematics of the interaction between the liquid feedstock material with the plasma jet and presents the way of evaluation of the coating buildup.
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Zalužanský Brook Restoration Project
Lašek, Jakub ; Kalibová, Jana (advisor)
This thesis contains restoration project of chosen section of Zalužansky brook in Ústecký kraj. Project is processed at the level of documentation for territorial management according to decree no. 499/2006, of buildings documentation. Theoretical part captures professional literature research dedicated to restorations, spatial planning and buildings documentation. Analytic segment closely defines and characterise location of interest at first, although major part consists of designed restoration measures following requirements for creating a building documentation by mentioned decree. Benefit from this thesis is it's possible usage as a background material for documentation created by authorised engineer for water management and landscape planning.
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Development of electronisation of local administration of Zábřežsko micro region in relation with e-government
Filipová, Lucie ; Ulman, Miloš (advisor) ; Martin, Martin (referee)
Thesis "Development of an electronisation of local administration of Zábřežsko micro region in relation with eGovernment"examines the issues of the development of electronisation of autonomy in relation to legislation and eGovernment. The topic of the public administration has been increasingly discussed in recent years not only in the context of increasing demands for processing speed and information, but also to facilitate transparency and sub-processes in public administration. Theoretical part describes the role of eGovernment in the public administration, the process of electronisation of public administration and individual services of eGovernment (Czech POINT, data boxes, basic registers, communication infrastructure of public administration), which are being in place with municipalities. The practical part evaluates the situation of software and hardware equipment, legislatively bound on a contract software and service of eGovernment on a sample of villages Zábřežsko. On the basis of the results of the questionnaire researches are determinated recommendations for sample of 20 micro region Zábřežsko.
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