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Guesthouse
Vlčková, Bára ; Kučera, Radim (referee) ; Pěnčík, Jan (advisor)
This bachelor thesis is a project of new five-storey, semi basement guesthouse in Opava. This guesthouse will be used for accommodation, catering and recreation. Accommodation capacity is 21 people. In the basement is a technical background. The first floor is designed for the overall run of the guesthouse, staff, catering and sports. In the second and third floor are rooms for guests. Almost every room has a balcony. In the fourth floor is a common room with adjoining terrace. The building is brick. The vertical structures are made of ceramic blocks. Outer walls are insulated by outer contact system. The ceilings are mostly ceramic-concrete and a smaller part of the reinforced concrete. The guesthouse is roofed by single-flat roof.
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Testing of commercial products for separators of lipids
Vlčková, Bohumila ; Vítová, Eva (referee) ; Omelková, Jiřina (advisor)
Diploma thesis was aimed at testing of five commercial products for separators of lipids. Performed study should to shown that in produts are presented lipase-produducing microoganisms, event. that in products are also lipolytics enzymes as addition. The products was cultivated by solid-state and submerged fermentations and subsequently was tested their properties as is lipolytic activity, the amount of free fatty acids etc. Solid-state fermentation used Tributyrin Agar Base where Tributyrin was used as a substrate. Submerged fermentation used special prepared medium where was olive oil. Methods using in this study served for detection and qualification of lipase-produducing microoganisms in individual products. For detection of lipase-produducing bacterial spieces was used Spirit Blue Agar. In this case was used Tributyrin and Tween 80 as a substrate. Lipolytic activity was measured by spectrophotometry and degradation of lipids was measured titrimetry. Performed study demonstrated that all tested products have ability to degradation of lipids.
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FAMILY HOUSE IN ŠTÍTINA
Vlčková, Bára ; Dohnal, Jakub (referee) ; Pěnčík, Jan (advisor)
This bachelor thesis is project of two-storey cellar family house in Štítína. The house is bricked and it’s designed for four-member family. In the basement is common room, food storage, dryer room, toilet, technical room and bike room. On the first floor is vestibule, living room with kitchen, bathroom, toilet and guest room. Garage for one car is connected to the object. Garage it’s not operationally connected with living part. On the second floor we find two children rooms, bedroom, bathroom, toilet and workroom. One children room has balcony access. Second floor is roofed by gabled roof. Above the garage is flat roof. Project is processed with computer program AutoCAD.
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Novel materials for NLO applications based on guanidine derivatives - crystal engineering and detailed characterisation
Kohúteková, Soňa ; Němec, Ivan (advisor) ; Kalbáč, Martin (referee) ; Vlčková, Blanka (referee)
Title: Novel materials for NLO applications based on guanidine derivatives - crystal engineering and detailed characterisation Author: Mgr. Soňa Kohúteková Department: Department of Inorganic Chemistry Supervisor: prof. RNDr. Ivan Němec, Ph.D. Abstract: This doctoral thesis is focused on the preparation and characterisation of new compounds for potential application in nonlinear optics (NLO). Four molecules containing guanidine fragment were chosen as the carriers of NLO properties - aminoguanidine, diaminoguanidine, N-guanidine-formamide and 1H-pyrazole-carboxamidine, according to the promising preliminary results of hyperpolarizability values obtained by quantum-chemical calculations. Experimental work was divided into two main directions of preparation of new crystalline materials - preparation of perovskite metal-organic frameworks (MOFs) and molecular crystals. In the first group of studied materials, target molecules were expected to occupy cavities of frameworks built by formate anions coordinated to metal cations. In the second group, in the molecular crystals, carriers of NLO properties were co-crystallised with selected inorganic anions to prevent the formation of centrosymmetric dimers and to influence the desired crystal packing. Prepared materials were characterised mainly by the means of...
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Drawings as a tool for investigating lower-secondary students' knowledge of cell structure
VLČKOVÁ, Barbora
This bachelor's thesis focuses on the use of drawing as a tool to assess students' knowledge of cell structure. The aim of the study is to examine how drawing can serve as a means of gathering information about students' knowledge and to evaluate the level of understanding of cell biology among 6th-grade students. The research involved 41 participants from two elementary schools. A questionnaire with three parts was used to collect data from the participants. The first part of the questionnaire inquired about basic personal information and the participants' interest in drawing. The second part consisted of open-ended and closed-ended questions to assess knowledge related to cells. In the final part, the participants were given space to draw and describe organelles of animal and plant cells. The questionnaire was administered to the participants twice. In the first administration, they were asked to demonstrate their knowledge without any preparation. During the second visit to the schools, the participants were provided with an educational text about cells, accompanied by illustrations of individual cells, to quickly familiarize them with basic information about cells. They then completed the same quiz again. The results indicate that drawing can be an effective tool for assessing students' knowledge of cell structure. Through drawing, students express and visualize their understanding of cells. The majority of respondents believe that drawing significantly contributes to their learning. The first quiz yielded average results, with at least half of the respondents answering correctly to most questions. Improvement in results was observed in the second quiz. The evaluation of the third part of the questionnaire was based on predetermined criteria. With one exception, each respondent included at least the nucleus in their cell drawing. Most respondents depicted more than one organelle in the cell.
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Design of Automatic Pet Feeder
Vlčková, Barbora ; Buganská, Tamara (referee) ; Rubínová, Dana (advisor)
This bachelor‘s thesis deals with the design of an automatic pet feeder that allows remote feeding support for cats and small to medium-sized dogs. The design is based on knowledge gained from design and technical analyses. Focus was placed on functional, ergonomic, and hygienic aspects. The resulting product is a modern pet feeder with added features that ensure the user has full control over feeding their pet.
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Surface-modified Luminescence, Surface-enhanced Raman Scattering and Plasmon Catalysed Reactivity of Ru(II) Dicarboxybipyridine Complexes Chemisorbed on Ag Nanoparticles
Žůrková, Markéta ; Vlčková, Blanka (advisor) ; Němec, Ivan (referee) ; Michl, Martin (referee)
[Ru(bpy)3]2+ (bpy = 2,2'-bipyridine) and its dicarboxybipyridine derivatives, namely [Ru(bpy)2(dcbpy)]2+ (dcbpy = 4,4'-dicarboxy-2,2'-bipyridine) and [Ru(dcbpy)3]2+ , were employed as model molecular ions for investigation of the mechanism of surface-modified luminiscence, of light-induced surface reactivity of adsorbates in systems with Ag nanoparticles (NPs), and as prospective photoexcited reductants of Ag+ ions capable of in- situ generation of Ag NPs. The steady state and the nanosecond time resolved luminescence (namely, 3 MLCT phosphorescence) of the [Ru(bpy)2(dcbpy)]2+ chemisorbed onto the non-aggregated Ag NPs has been investigated and compared to those of the electrostatically bonded [Ru(bpy)3]2+ . The intensity decrease of the emission and the excitation spectra observed for both complexes upon their attachment to Ag NPs has been attributed to the overlap of the excitation spectra with the surface plasmon extinction (SPE) of Ag NPs. This overlap enabled energy transfer from 3 MLCT excited state of the complexes to the excited surface plasmon state of Ag NPs. Additionally, it was proved that the chemisorption of the complexes manifests itself by at least one order of magnitude shorter 3 MLCT excited state lifetime than the electrostatic interaction. Furthermore, by the newly developed...
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Perinatal brachial plexus palsy - comprehensive testing
Štěpánková, Tereza ; Vlčková, Blanka (advisor) ; Šafářová, Marcela (referee)
This thesis focuses on the comparison of the results of selected clinical trials in children with perinatal brachial plexus palsy (PBPP) in the age range of 4-6 years. The theoretical part summarizes the basic knowledge about the anatomical basis of PBPP, its types and levels of nerve injuries, the main comorbidities of PBPP, the most commonly used clinical trials, the possibilities of conservative and surgical therapy with emphasis on conservative therapy methods applied in the Czech Republic. The main goal was to determine the correlations between selected tests and verify their suitability for use in children with PBPP. Methods: A total of 14 probands with a diagnosed PBPP in the age range of 4-6 years (mean age 69.9 months; SD ± 11.6 months) were included in the study. All subjects underwent 3 clinical trials - Acvitve Movemet Scale (AMS), Brachial Plexus Outcome Measure (BPOM) and Bruininsk-Oseretsky Motor Proficiency Test - Second Edition (BOT-2), which were administered during 1-2 visits. Total and partial test results were recorded and compared in correlation analysis. Results: Based on the results of statistics a significant linear relationship between the scores of AMS and BPOM was confirmed (Pearson's r = 0.961; p < 0.001). No linear relationship between other tests or their partial...
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New pathways to plasmonic nanoparticle assembling into 2D and 3D hybrid active systems for SERS of graphene and SERS, SERRS and GERS + SERS of aromatic molecules
Gajdošová, Veronika ; Vlčková, Blanka (advisor) ; Němec, Ivan (referee) ; Michl, Martin (referee)
In the first part of the Thesis, a new type of active system for SERS and SERRS of hydrophobic molecules, namely a 3-dimensional (3D) nanosponge aggregate with incorporated hydrophobic molecules has been developed, and tested by fullerene C60 and hydrophobic free- base tetraphenylporfine (H2TPP). The SERS and SERRS (surface enhanced /resonance/ Raman scattering) limits of detection (LODs) of C60 at four excitation wavelengths spanning the visible spectral region were found to be by one order of magnitude lower than in the reference system, which mimics the previously reported ways of utilization of Ag nanosponges as substrates for SERS and SERRS. The superiority of the newly developed sample is attributed to the efficient localization of the hydrophobic molecules into hot spots in 2D fractal aggregates of Ag nanoparticles (NPs). Diprotonation of H2TPP during the procedure using HCl as the preaggregation agent has been eliminated by employment of NaCl. On the other hand, investigation of the mechanism of H2TPP protonation during the former preparation procedure opened a possibility to employ Ag nanosponge aggregate as nanoreactor. In the second part of the Thesis, 2D assemblies of AgNPs were found to be better substrates for SERS of single layer graphene (SLG) than the 3D ones. In particular, the 2D...
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Surface-enhanced Raman spectral detection of bilirubin and temporally synchronized monitoring of its photochemical transformations in selected solvents by SERS and electronic absorption spectroscopy
Hrnčířová, Jana ; Vlčková, Blanka (advisor) ; Procházka, Marek (referee)
Surface-enhanced Raman scattering (SERS)-active systems based on macroscopic Ag nanosponge aggregates as well as the conditions of SERS spectral measurements were optimized for selective and sensitive detection of a biomedically important, amphiphilic bile pigment bilirubin (BR) in alkaline aqueous solutions and in its solutions in a selected water miscible solvent, namely dimethylsulfoxide (DMSO) and/or water-immiscible solvent, namely CH2Cl2. Ag nanosponges assembled by using HCl as a pre-aggregation agent were found to be the optimal SERS-active systems for a reliable detection of BR in all the above-mentioned solvents. In all cases, the protonated form of adsorbed BR has been detected upon BR incorporation into Ag nanosponges, and its marker bands have been established by SERS spectral probing at excitation wavelengths in the 445-780 nm range. The sensitivity of SERS spectral detection was evaluated in terms of the concentration values of SERS spectral detection limits (SERS LODs) of BR incorporated into Ag nanosponges. In particular, the SERS LOD for BR incorporated from its alkaline aqueous solution is 1 x 10-8 M (at 532 nm excitation), for BR incorporated from its solution in DMSO, its value is also 1 x 10-8 M (at 532 and/or 633 nm excitations), and for incorporation from the solution of BR...
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