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Aprotic electrolytes for supercapacitors
Musílek, Václav ; Knotek, Tomáš (referee) ; Dvořák, Petr (advisor)
This master´s thesis deals different types of the aprotic electrolytes for supercapacitors and investigates by impedance spectroscopy to conductivity and method cyclic voltametry to measure dimension potential windows. Used aprotic solvents: propylencarbonate, dimethylsulfoxide, N, N dimethylformamide, ethylencarbonate, dimethylcarbonate, diethylcarbonate and acetonitrile. In the aprotic solvents were appended salts: LiClO4, NaClO4, KClO4, LiBF4, LiPF6, TEABF4 and TMABF4. From these compounds were prepared solutions with the different molar concentrations.
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Utilization of physicochemical and spectroscopic techniques in study of stress-response of cyanobacteria
Skoryk, Maksym ; Šedrlová, Zuzana (referee) ; Sedláček, Petr (advisor)
Tato bakalářská práce je soustředěná na zkoumaní cyanobakterií, vystavených hyper a hyposmotickým stresům. Na základě literární rešerše byly navžené vhodné analytické metody určené ke studiu dvou modelových organismu - Synechocystis sp. PCC 6803 a Synechocystis sp. salina Wislouch CCALA 192. Celkem čtyři metody byly použité k charakterizaci osmoticky zatížených bakterií. Průtoková cytometrie byla použita k vyhodnocení viability. Fluorescenční sonda SYTOX Blue poskytla důvěryhodnou informaci ohledně viability bakterií. Propidium jodid naopak poskytl nezřetelnou informaci. Optické vlastnosti cyanobakterií byly prozkoumané pomoci UV-VIS absorpčních a turbidimetrických měření. Termogravimetrická analýza byla použita pro mapování změn obsahu vody v osmoticky stresovaných buňkách. Tato metoda ukazala. že PHB-positivní Synechocystis sp. PCC 6803 jsou pravděpodobně vice odolné vůči hyperosmotickým stresům než PHB-negativní. Plynová chromatografie byla použita ke kvantifikaci vnitrobuněčného PHB, který činil přibližně 1-2 % suché hmoty PHB-positivních buněk.
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The effect of swimming training on children with skin problems
Kleinerová, Kateřina
The diploma thesis focuses on children of early school age who have undergone mandatory swimming training in pools with various water disinfection methods, specifically chlorine, salt, and UV+. The aim of the thesis is to analyse how this swimming instruction affects children with different skin conditions, such as dry skin, atopic eczema, psoriasis, and plantar warts. The research was conducted at three different primary schools, each of which visited a different swimming pool with a distinct water treatment method during the swimming lessons. A total of 348 students participated in the research, including 172 girls and 176 boys from the 3rd and 4th grades, aged 8 to 11. The research utilized the method of quantitative personal interviewing and the method of qualitative observation. The theoretical part delves into swimming, swimming instruction, water treatment methods in swimming pools, and selected skin diseases. The practical part outlines the research findings. The obtained results demonstrated that skin dryness was observed in 35.4% of students from all three schools participating in swimming lessons. Skin dryness manifested in 26.5% of students in the chlorinated pool, in 46.2% of students in the salt-treated pool, and in 34.6% of students in the UV+ pool. The exacerbation of atopic eczema...
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The effect of swimming training on children with skin problems
Kleinerová, Kateřina ; Svobodová, Irena (advisor) ; Jandová, Soňa (referee)
The diploma thesis focuses on children of early school age who have undergone mandatory swimming training in pools with various water disinfection methods, specifically chlorine, salt, and UV+. The aim of the thesis is to analyse how this swimming instruction affects children with different skin conditions, such as dry skin, atopic eczema, psoriasis, and plantar warts. The research was conducted at three different primary schools, each of which visited a different swimming pool with a distinct water treatment method during the swimming lessons. A total of 348 students participated in the research, including 172 girls and 176 boys from the 3rd and 4th grades, aged 8 to 11. The research utilized the method of quantitative personal interviewing and the method of qualitative observation. The theoretical part delves into swimming, swimming instruction, water treatment methods in swimming pools, and selected skin diseases. The practical part outlines the research findings. The obtained results demonstrated that skin dryness was observed in 35.4% of students from all three schools participating in swimming lessons. Skin dryness manifested in 26.5% of students in the chlorinated pool, in 46.2% of students in the salt-treated pool, and in 34.6% of students in the UV+ pool. The exacerbation of atopic eczema...
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Access and Backhaul Solutions for Cellular-Enabled Industrial Wearables
Saafi, Salwa ; Bečvář, Zdeněk (referee) ; Tölli, Antti (referee) ; Hošek, Jiří (advisor)
Smartphones are no longer the only portable devices changing the lives and daily routines of today’s digitally connected consumers. Smart glasses, watches, headsets, cameras, bands, trackers, monitors, and scanners are all examples of hands-free inherently mobile wearable devices that enable the emerging consumer and industrial applications. Similarly to customers who are ready to embrace life-changing experiences with new devices, companies and industries are also employing smart helpers and intelligent assistant systems to improve the efficiency of their automated processes and the productivity and safety of their workers. Not limited to the employment of smart helpers, the industrial digital transformation relies heavily on the deployment of communication infrastructures that utilize efficient cellular technologies to meet the dissimilar requirements of industrial applications. Motivated by these intelligent assistant systems and communication technologies, this dissertation focuses on the role of wearable technology and cellular connectivity in enabling the automation of vertical domains. Aiming to address the current technology gap behind cellular-enabled industrial wearables, the present work is dedicated to assessing the applicability of cellular connectivity to industrial wearables and developing efficient access and backhaul solutions for the support of the requirements of emerging industrial applications. The following outline of this dissertation is built around the main objectives as highlighted above and presents the main outcomes of this work, which include (i) a concise technology review capturing the evolution of the recent solutions proposed by the 3rd Generation Partnership Project (3GPP) for wearable devices and communications, (ii) an introduction to novel categories of industrial wearable applications with mid-end requirements that fall in-between the two extremes of high-end and low-end Fifth-Generation (5G) service classes, (iii) an assessment of the applicability of the emerging Reduced-Capability New Radio (NR RedCap) technology to the newly introduced wearable applications, (iv) an extension of the RedCap wearable communications with Device-to-Device (D2D) and Supplementary Uplink (SUL) capabilities for enhanced access network performance, (v) a cost-efficient backhaul selection solution based on Markov Decision Processes (MDPs) for time-sensitive wearable applications in an integrated terrestrial and non-terrestrial communication scenario, and (vi) a data-driven Artificial Intelligence (AI)-aided approach for the management of complex industrial networks with dissimilar device capabilities, communication solutions, and application requirements. A set of simulation and analytical models is developed to assess the relevant key performance indicators as part of the above contributions. Beyond indicating the need for technology improvement demanded by the efficient integration of wearable devices into cellular networks and the satisfaction of industrial application requirements, the numerical results reported in this dissertation confirm the network performance enhancements achieved by the access and backhaul solutions contributed in this work.
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The effect of salt on health, its content in food and the intake of the population of the Czech Republic
Miškovská, Žaneta ; Dostálová, Jana (advisor) ; Košťálová, Alexandra (referee)
This work deals with the effect of salt on human health. Excessive (as well as insufficient) salt consumption can harm health, and at the same time salt consumption in the Czech Republic is one of the highest in the EU. In my work I deal with basic types of salt such as table salt, vacuum and sea salt and their extraction. I also deal with the two elements that make up salt - sodium and chlorine. I also describe disorders of sodium and chlorine metabolism, the effect of salt on health (positive and negative) and the function of salt in food. I also briefly address the salt content of bakery, meat and dairy products and the importance of salt in the technology of these foods. In the practical part of the work, I deal with the salt content in individual selected foods and the possibilities of how to reduce this salt content. Part of the practical part of the work is a questionnaire survey in spas and fitness centers regarding their knowledge of the salt content in individual foods. In the second part of the practical work, I will evaluate the menus from clients from fitness centers according to the nutritional program. The aim of this work is to map the effect of salt on human health, its content in basic foods and its intake by the population of the Czech Republic.
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The effect of salt on health, its content in food and the intake of the population of the Czech Republic
Miškovská, Žaneta ; Dostálová, Jana (advisor) ; Košťálová, Alexandra (referee)
This work deals with the effect of salt on human health. Excessive (as well as insufficient) salt consumption can harm health, and at the same time salt consumption in the Czech Republic is one of the highest in the EU. In my work I deal with basic types of salt such as table salt, vacuum and sea salt and their extraction. I also deal with the two elements that make up salt - sodium and chlorine. I also describe disorders of sodium and chlorine metabolism, the effect of salt on health (positive and negative) and the function of salt in food. I also briefly address the salt content of bakery, meat and dairy products and the importance of salt in the technology of these foods. In the practical part of the work, I deal with the salt content in individual selected foods and the possibilities of how to reduce this salt content. Part of the theoretical part of the work is also a questionnaire survey among ordinary consumers regarding their knowledge of salt content in individual foods. The aim of this work is to map the effect of salt on human health, its content in basic foods and its intake by the population of the Czech Republic. Keywords Salt, sodium, chlorine, salt content, salt in food, salt consumption
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Salt intake in the diet of older schoolchildern
HEMBEROVÁ, Aneta
Many studies prove that developed countries have an over-exaggerated intake of salt. The World Health Organization recommends an intake of 5g per person per day. Daily doses are, however, exceeded multiple times. It has been proven that an excessive intake of salt has a negative impact on our organism. It is a risk factor for the occurrence of hypertension, obesity, osteoporosis. The objective of my thesis has been to find out what amount of salt the food of older schoolchildren contains. The thesis is divided into a theoretical part and a practical part. The theoretical part deals with the issue of salt, it describes its history, kinds, meaning and use, the occurrence of salt in different foods and compensation options in diet. Futher, it focuses on the physiology of sodium, potassium and chlorine and the illnesses caused by an excessive intake of salt - specifically hypertension, obesity and osteoporosis. The conlcusion of the theoretical part is devoted to carbohydrates, fats, and protein in the diet of older schoolchildren. The practical part evaluated the weekly diet plans and urine analyses from the 12 respondents of older school age. The content of salt in their diet was being analysed via the Nutriservis programme. Urine analyses were being done in clinical laboratories. The acquired information on body height, weight and blood pressure was assessed using percentile graphs. The results confirm the fact that children of an older school age consume a higher than recommended amount of salt. In ten out of twelve respondents a higher than average daily amount of 5 g salt was discovered. This was confirmed by the value of sodium waste levels in their urine. The link between a higher salt intake and obesity or hypertension was not proven. There were no significant differences between girls and boys.
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Salt intake in children of adult age
PEJCHAL, Petr
My thesis deals with salt intake in adolescent children. The aim of the thesis was to find out the amount of salt in the diet of adolescents and their awareness of this issue. The bachelor thesis is divided into two parts - a theoretical and a practical one. The theoretical part deals with basic information about table salt and its origin. It is aimed to the physiology and function of sodium, potassium and chlorine in the human body. It also deals with recommendations on salt intake and its content and role in various foods. It addresses not only diseases associated with this topic and their correlation with the amount of salt ingested, but also dietary principles appropriate for this age group. The subject of the practical part was to find out the amount of salt in the diet of fifteen respondents in the age range of 15-18 years by means of qualitative research. This group of adolescents provided me with a complete menu consisting of two weekdays and one weekend diet. The Nutriservis program was mainly used for the calculation of the daily salt intake. For foods where the amount of salt was not stated in the database, I obtained the value by multiplying the sodium content by a factor of 2.5. I inserted food that the database did not contain by using the nutrition information on the food packaging. With the consent of the respondents and their parents, the calculation was based on the collection of urine for 24 hours, followed by the evaluation of sodium and sodium chloride waste as well as the blood pressure measurement, which was converted into percentile values. Furthermore, a short questionnaire focused on the awareness of adolescents in this issue and the calculation of BMI for individual respondents was used. The research results showed that all 15 adolescents exceeded the recommended amount of salt. I was not prove the connection between sodium waste in the urine and its intake according to the diet. Respondents' awareness of the issue of salt intake and its effect on the body was not extensive. All respondents routinely exceeded the recommended daily salt intake, but only 4 knew this value. Increasing adolescents' awareness of this topic could lead to a reduction in the salt content of their diets.
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Pilot questioning of patological addiction on food - investigation accomplished in selected Prague fast food restaurants and sweetshops
Stará, Iveta ; Čablová, Lenka (advisor) ; Nevoralová, Monika (referee)
This thesis deals with the phenomenon of food addiction. The research was held among the customers of Prague sweetshops, fast foods and supermarkets. The aim of this work is to find the prevalence of this phenomenon if Prague population, which visits these organizations. The second aim of this work is to deal with prevalence of food dependence in relation with social - demographic readings, such as gender, age, the highest education and a level of month salary. It pays attention to the high incidence of different criterion of food addiction. Finally it deals with problematic foodstuff. This thesis is divided into two parts. The first theoretical part deals with the problems of food dependence. According to the bibliographic search this work reports on diagnostic methods for this illness and on most frequent problematic foodstuff, like additives in food. For better understanding of this problem I include to my work differences between eating disorders, obesity and food addiction. In this theoretic part, there is also article which deals with results of researches on rodents and human beings. This article confirms that this illness exists. The second practical part of this work deals with particular research for which the questionnaire from the United States (named Yale food addiction scale) was...
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