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Assessment of the Presence of Hazardous Components in Textile Waste
Shtukaturova, Anastasia
An up-flow percolation test was chosen to identify and characterize heavy metals and PFAS constituents in textile waste. Up-flow column percolation tests are used on a laboratory scale to assess the leaching behavior of a hazardous substance from a waste in a given state as a function of time. The test was performed according to the European Technical Standard CEN/TS 14405. Preliminary results showed the following heavy metals in the leachates Al, As, Co, Cr, Cu, Fe, Mn, Pb, Zn and Sb, with Al, Cr, Fe, Mn and Zn being predominant.
Plný tet:  PDF
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Development of Polymeric Enantioselective Membranes
Čížek, Jan
Enantiomers are molecules that share the same chemical formula but in space form mirror images of each other. Their reactions with other chiral molecules can be remarkably different, which is crucial mainly for pharmaceuticals and agrochemicals. However, industrialscale synthetic production of enantiomerically pure compounds is not always available. Therefore, the need for pure enantiomeric compounds drives the development and research on various separation methods. However, most methods used on the industrial scale are limited to specific compounds (diastereomeric recrystallization) or generally difficult and/or expensive to scale up (chromatography-related methods). Separation of enantiomers using membranes is promising\nthanks to the easy scalability and continuous operation of membrane processes. Various ideas about how the enantioselective membranes should look like have been published in the last thirty years. The mechanism of enantiomeric separation on a membrane is, however, highly specific, and still requires extensive research. In this work, four types of enantioselective polymeric membranes are presented.
Plný tet: PDF
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Gas sensors based on diamond heterostructures for air quality monitoring
Kočí, Michal ; Szabó, Ondrej ; Izsák, T. ; Sojková, M. ; Godzierz, M. ; Wróbel, P. ; Husák, M. ; Kromka, Alexander
Currently, great emphasis is placed on air quality and the presence of pollutants. Attention is therefore focused on new gas-sensing materials enabling detection even at low (up to room) temperatures with sufficient response and short reaction time. Here, we investigate the suitability of H-NCD films and their heterostructures with MoS2, GO, rGO, SH-GO, or Au NPs for gas sensing applications. Electrical properties are measured for oxidizing gas NO2, reducing gas NH3, and chemical vapor of ethanol, and at temperatures varied from room temperature to 125 °C. In contrast to the individual forms of employed materials with limited response to the exposed gases, the HNCD heterostructures revealed better sensing properties. In particular, the Au NPs/H-NCD heterostructures revealed a higher response at 125 °C in contrast to H-NCD, MoS2/H-NCD had quite good response even at room temperature and GO/H-NCD revealed high sensitivity to chemical vapor, which further improved for the SH-GO/HNCD.
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Refurbishment and conversion of former factory, Portlaw
Kuběna, Martin ; Mléčka, Jan (referee) ; Zemánková, Helena (advisor)
The goal of the work is to create a place that will combine research, education and popularization in the field of environmental issues and further convey and explain it to the general public in the form of lectures, publications and educational and cultural events. It will deal with laboratory research on contaminants and the composition of contaminated soil, natural succession and steps to prevent soil degradation during production and other processes. The events organized in the area will be aimed not only at tourists and visitors coming to the area via the cycle path or at local residents and their friends, but also at a wider audience in the form of conferences and audits on the topic of contamination and the environment.
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Safe administration of injectable medications
VANÍČKOVÁ, Eliška
Introduction: Drug administration is an essential part of nursing practice. Following the example of other countries, the safety of drug administration is coming to the fore. Nowadays, patient safety is a key element in the provision of quality nursing care. The aim of this thesis was to map the procedure of drug administration by intramuscular and subcutaneous routes. Methodology and research sample: For the purpose of this thesis, the method of participant observation was chosen, which took place in the departments of internal medicine and surgery from August to October 2023. All observations were recorded in a pre-designed record sheet and the data were statistically analysed using SASD and SPSS software. The analysis was based on first and second level classification, contingency tables with absolute and relative frequencies and sign scheme were constructed. The results were then organised into graphs and tables. Results: The results of the thesis indicate that the nurses observed do not follow the labelling of injections to a considerable extent, which can lead to errors. Furthermore, in a significant number of cases the nurses do not take care to properly disinfect the injection site of the injectable drug, which leads to a higher likelihood of signs of inflammation at the injection site. A surprising finding was the precision in hand sanitation. This behaviour is very important because, in combination with careful disinfection of the injection site, it is more likely to prevent the introduction of infection into the patient's body. Conclusion: The thesis provides a comprehensive view on the issue of safe administration of injectable medicinal products. As a result of this work, it will be presented at a student conference and an article will be written on the subject.
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Self-reflection of cultural competences among nurses working in home care
CHVALOVÁ, Miroslava
Cultural competence is a set of cultural knowledge that enables non-medical health professionals to achieve appropriate outcomes when caring for and working with clients/patients from a different country. The main aim of our study was to find out what cultural competencies nurses have in home care. The empirical part used a quantitative research method in home care settings. Respondents answered a questionnaire consisting of 88 questions and two parts namely standardized and non-standardized part. We surveyed the nurses' awareness of the culture of patients/clients, their level of cultural competence, focusing on cultural skills, cultural knowledge and cultural sensitivity and lastly, we surveyed the nurses' self-assessment of cultural competence. 108 respondents took part in the research and the results of the survey indicate that the characteristics mentioned in the hypotheses, age and educational attainment, are not related to the level of cultural competence of non-medical health workers. It also shows that the majority of nurses do not think that knowledge of a foreign language is important in practice and half of them do not even use a foreign language. However, they do not have negative attitudes towards foreigners and recognize the importance of lifelong learning in order to provide culturally competent care. This work could serve as educational material for students, future non-medical health workers. The results of the thesis will be published in a journal that will be beneficial to non-medical health personnel as well as the general public and will also be presented at a conference.
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Czechoslovak-West German relations during the Conference on Security and Cooperation in Europe (1975)
KUBÍKOVÁ, Veronika
The bachelor thesis deals with Czechoslovak-West German relations during the Conference on Security and Cooperation in Europe. This international meeting represented a historical milestone in the context of détente politics and its consequences significantly influenced international politics, including interstate relations. This thesis first focuses on the course and outcome of the Helsinki Conference. Subsequently, the process of the development of relations between the Czechoslovak Socialist Republic and the Federal Republic of Germany will be presented, primarily from the perspective of surviving diplomatic documents.
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Spectroelectrochemical Devices for Monitoring of Intermediates and Products on Carbonbased Composite Electrodes
Vaněčková, Eva ; Šikula, M. ; Hrdlička, Vojtěch ; Sebechlebská, Táňa ; Kolivoška, Viliam
Spectroelectrochemistry (SEC), as an interdisciplinary field, provides us with more comprehensive information about electroactive molecules involved in charge transfer reactions. Commercially\navailable SEC cells most often have an incorporated platinum working electrode, which can limit the range of the usable potential window and, in addition, can complicate the analysis due to the\nabsorption phenomenon. In this work, we designed and manufactured two types of custom-made SEC cells employing optically transparent carbon-based working electrodes for UV-Vis monitoring of reactants and electrogenerated intermediates and products. The first SEC cell is entirely manufactured by 3D printing using fused deposition modeling (FDM) by combining optically transparent (PET) and electrically conductive (PLA-CB) filaments. The second SEC cell employs pencil graphite (PG) rods as the working electrode (PGE) and its body is manually assembled from quartz slides. The functionality of the FDM 3D printed SEC cell and manually assembled quartz SEC cell were verified by cyclic voltammetry with in situ UV-Vis spectroscopic absorption monitoring of ruthenium(III) acetylacetonate (Ru(ac)3) redox-active probe dissolved in an aqueous or non-aqueous deaerated solvent, respectively. Both presented cells enable complete redox reversible conversion and strictly oxygen-free conditions.
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