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Membrane Oxygenator
Jindra, Jakub ; Harabiš, Vratislav (referee) ; Hejč, Jakub (advisor)
This bachelor thesis deals with the creation of an oxygenator for isolate rabbit’s hearts. In this work is created a mathematical model of the oxygenator and calculate optimal parameters for this application. Design of the construction solution leads to creating a 3D model and print of the oxygenator proposal and creation of the functional prototype. The conclusion of this work is the evaluation of the functionality of the equipment and the discussion of the achieved results.
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Nursing care for newborns with oxygen therapy
Dubská, Aneta ; Průšová, Kateřina (advisor) ; Sedlářová, Petra (referee)
The present thesis focuses on the nursing care of newborns with oxygenotherapy and its specifics. Furthermore, the thesis includes a review analysis of the respondents' knowledge related to oxygenotherapy in newborns. This thesis consists of two main parts, theoretical and empirical. The theoretical part of the thesis describes the principles of oxygen administration, methods of administration, the most common conditions requiring oxygen therapy and its complications. The basic knowledge in neonatology is often crucial for obtaining this information, which is highlighted in this thesis. Also, basic nursing care of neonates with oxygen therapy is briefly characterized. The aim of the empirical part of the thesis is to compare the obtained knowledge analysis of the nurses of the selected specialist units, namely the neonatal unit and the delivery room. The research method of the empirical part of this thesis was a quantitative research survey, focused on the knowledge of paediatric nurses, midwives and nurses of other job classifications working in neonatal wards or delivery rooms. The 21-item questionnaire was designed for this thesis only and was administered anonymously. The results of the survey showed that the knowledge of paediatric nurses and midwives in caring for neonates with oxygen therapy...
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Photoctive Nanofiber Membranes for Oxygen Sensing
Ludačka, Pavel ; Mosinger, Jiří (advisor) ; Lang, Kamil (referee)
In this work, luminescent oxygen sensors based on the quenching of porphyrin sensor molecules encapsulated in a nanofibrous polymer matrix prepared by electrospinning were prepared and studied. The prepared sensors were characterized using electron microscopy, absorption and emission spectra, including time-resolved emission spectra. The sensitivity of the sensors was optimized in different polymer matrices, concentrations of porphyrin sensor molecules, and the thickness of the nanofibrous sensor layer. Furthermore, the photogeneration of singlet oxygen and the resulting antibacterial properties of the sensor nanofiber membrane were demonstrated. Key words Photoactive, nanofiber, oxygen, singlet oxygen, optical sensor
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Increasing elementary science experiments' inquiry potential
Vydrová, Lucie ; Rusek, Martin (advisor) ; Beneš, Pavel (referee)
This bachelor thesis deals with the issue of research-based teaching and its application in chemistry education. In the theoretical part, the division, meaning and position of the framework curriculum in primary schools is presented. The next part deals with inquiry- based teaching, its definition, advantages and disadvantages that it can bring to chemistry teaching and education in general. The paper then focuses on motivation, its types, how it can be used in teaching and the factors affecting motivation. In the practical part, the findings from the previous chapters are used to develop two worksheets to support inquiry- based activities. They are designed to make it as easy as possible for pupils to understand the material themselves. The two worksheets are divided into two parts. The first is for the teacher, divided into several sections to make it easy to understand the teacher's necessary preparation for the lesson and the procedures and outcomes expected of the pupils. There is also a section of hints, called 'tip-cards', to help pupils if they get lost in the process. The second part is for pupils. The worksheet has been designed to support as much as possible the exploratory style of teaching and, more importantly, the independence of the pupils. Emphasis is also placed on linking...
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Chemical sensor for the quality of the protective atmosphere of packaged foods
Filipi, Denisa ; Čeppan, Michal (referee) ; Veselý, Michal (advisor)
This thesis deals with optimizing compositions to prepare thin films for the quality sensor of the protective atmosphere of packaged food. This sensor is based on the detection of oxygen ingress into a modified atmosphere food package using a colour change of the sensor. Titanium dioxide dispersion was used as semiconductor and glycerol as sacrificial electron donor. The effect of the polymer matrix on the prepared thin films's appearance and on the reduction and reoxidation rates of the films was investigated. The thickness and rheological parameters of the selected sensor mixture were characterized and the stability of the thin films under visible light was monitored. The effect of oxygen concentration on the sensor's reverse oxidation kinetics was also studied. Furthermore, the selected sensor mixture print conversion from laboratory to operational scale was carried out. The prepared sensor thin films can be reduced by UV radiation with an intensity of 0.4 mW·cm2 in 35 s, and the color response of the film is visible even at low oxygen concentrations.
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Nekonvenční metody dělení materiálu
SUFČÁK, Vojtěch
Bachelor thesis contains information about unconventional methods of material cutting, there are also mentioned conventional methods. There are described unconventional methods of material cutting, such as laser cutting, plasma cutting, oxygen cutting, water jet cutting, electron beam cutting and ultrasound cutting. There are some conventional methods too, e.g. cutting-off, slicing and milling. Theoretical section cointains literary recherche, which is based on Czech and foreign bibliography.
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Vliv nasycení kyslíku ve vodě na efektivitu intenzivního chovu candáta obecného (Sander lucioperca) v recirkulačním akvakulturním systému
VOJTA, Petr
This thesis deals with an issue of Zander (Sander lucioperca) production in a recirculating aquaculture system RAS in different oxygen rates (50-80% O-, 80-110% Os and O+ 110-150%). Zander weighted W=22,98?15g was planted into two identical recirculating systems with different water temperature. SGR, FCR and FC of survival and general health condition of kept fish in hematology, biochemistry as well as stress indicators were evaluated. The results proved a negative influence of hypoxia (50-80%) on the food reception, growth and general survival of experimental fish kept in this environment in both the recirculating systems with water temperature 20 and 23°C. In the group O- kept in RAS 20°C, higher coefficient of FCR=1,11 was proved in comparison with group O (normoxia) and group O+ (hyperoxia), where no significant difference (p0,05) was recorded. The health condition showed a significant difference (p0,05) of O group in comparison with group O+ and O in RAS 20°C during the TBARS evaluation (brain, gills, muscle), assessing SOD in liver, and GPx (brain and muscle). By determining the HSI, SSI and VSI indexes, the significant differences (p0,05) of HSI and VSI for O+ and O groups in comparison with O- were proved.
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Vulnerability of organic matter in permafrost-affected soils and potential greenhouse gas emissions
DIÁKOVÁ, Kateřina
Degradability of soil organic carbon and potential greenhouse gas emissions were studied in permafrost-affected soils. Special attention was paid to cryoturbated horizons in upland tundra and cryogenic bare ground features exposing deep peat layers on a surface of permafrost peatland. The presented studies aimed to identify driving factors influencing degradability of organic carbon in arctic soils and the effects of temperature, oxygen availability and addition of plant-derived organic compounds were targeted by several laboratory incubation experiments. Role of nitrogen availability in C cycling and GHGs production was further investigated in combination of field measurements and laboratory experiments.
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Design of Single Hyperbaric Chamber
Trněná, Eliška ; Paliatka, Peter (referee) ; Rubínová, Dana (advisor)
The topic of the diploma thesis is the design of a monoplace hyperbaric chamber for medical use. The aim of the work is to create a design respecting technological and ergonomic requirements for safe and comfortable operation of the device. The design is based on the current state of knowledge, its shape respects the target environment of the device and is focused on details that provide the patient and hospital staff with comfort. Important design elements are cover of the pressure capsule, incorporating the compressor and auxiliary accessories into the overall shaping and increasing the general aesthetic level of the device compared to competing products.
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Hypoxia in aviation
Doležel, Jan ; Šplíchal, Miroslav (referee) ; Hammer, Jaromír (advisor)
This bachelor thesis focuses on hypoxia in general and commercial civil aviation. The goal of the thesis is to create a general overview of hypoxia in aviation and the dangers connected to it. The thesis includes chapters describing the physiological principles of the human body, the physical laws associated with hypoxia, and the on-board oxygen and pressurization of aircraft. At the end of the thesis the author made an analysis of two aviation accidents caused by hypoxia.
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