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Total contents and speciation of arsenic and selenium in plants growing in soils with different physico-chemical properties
Tremlová, Jana ; Száková, Jiřina (advisor) ; Vymazal, Jan (referee)
This dissertation thesis deals with uptake, accumulation and transformation of arsenic and selenium in plants growing on soils with different chemico-physical soil properties. The contents of arsenic were investigated in 99 wild plant species, coming from 27 different families and 6 different vegetables growing in arsenic contaminated soils. The results suggest that there are species-specific mechanisms which protects certain plants from the excessive uptake of arsenic from the soil. On the other hand, there are plants using a strategy of accumulation, which theoretically may increase the risk of arsenic entry into the food chain, whether through grazing cattle and wildlife or through consumption of vegetables growing on arsenic contaminated soils. The most prevalent arsenic compounds are AsV and AsIII. Other arsenic compounds occure as minor species. An important finding was detection of arsenobetaine in Plantago lanceolata L. and Carex praecox Schreb ..
The contents of selenium were examined in 73 species of wild plants, coming from 29 different families. The results suggest that naturally low levels of selenium in the soil of selected locations along with a low capability of selenium uptake via collected plant species lead to the low content of selenium in plant biomass which may contribute to selenium deficient throughout the food chain. Foliar application of selenate on wild plant communities and on some types of vegetables in our case Brassica oleracea var. italica can have a positive impact on increasing the selenium content in the aboveground biomass of these plants and by extension, increase the selenium content in the human diet. Dominant selenium compounds in the aboveground biomass of the analyzed plants were SeVI and selenomethionine, with variable proportion of other commonly occurring organic selenium compounds, which is mainly affected by plant species.
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Provision of alternative refuse collection for a real estate surrounded by foreign property
Kvapil, Radek ; Štindl, Michal (referee) ; Klika, Pavel (advisor)
The thesis deals with possible ways of drainage and wastewater disposal. The issue of wastewater discharge to the environment has been closely monitored in recent years, and there is an apparent effort to improve the current situation.The dissertation discusses and compares three selected options – access to improved sanitation, building reservoirs and domestic wastewater treatment plant.The final section is dedicated to a comparison of acquisition and operating costs over time and to subsequent evaluation of the most suitable option. For the sake of clarity and assessment of potential solutions, the locality in the administrative area Vysoké Mýto - Domoradice has been selected as a model. The local authorities have been designing a public storm sewer, and given that it is surrounded by land, this issue will need to be addressed.
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Swarm Intelligence
Winklerová, Zdenka ; Šaloun, Petr (referee) ; Škrinárová,, Jarmila (referee) ; Zbořil, František (advisor)
The intention of the dissertation is the applied research of the collective ( group ) ( swarm ) intelligence . To demonstrate the applicability of the collective intelligence, the Particle Swarm Optimization ( PSO ) algorithm has been studied in which the problem of the collective intelligence is transferred to mathematical optimization in which the particle swarm searches for a global optimum within the defined problem space, and the searching is controlled according to the pre-defined objective function which represents the solved problem. A new search strategy has been designed and experimentally tested in which the particles continuously adjust their behaviour according to the characteristics of the problem space, and it has been experimentally discovered how the impact of the objective function representing a solved problem manifests itself in the behaviour of the particles. The results of the experiments with the proposed search strategy have been compared to the results of the experiments with the reference version of the PSO algorithm. Experiments have shown that the classical reference solution, where the only condition is a stable trajectory along which the particle moves in the problem space, and where the influence of a control objective function is ultimately eliminated, may fail, and that the dynamic stability of the trajectory of the particle itself is not an indicator of the searching ability nor the convergence of the algorithm to the true global solution of the solved problem. A search strategy solution has been proposed in which the PSO algorithm regulates its stability by continuous adjustment of the particles behaviour to the characteristics of the problem space. The proposed algorithm influenced the evolution of the searching of the problem space, so that the probability of the successful problem solution increased.
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The Pump with a Diffuser with Stochastic Blades (Runner and Diffuser)
Dobšáková, Lenka ; Melichar, Jan (referee) ; Veselý, Jindřich (referee) ; Haluza, Miloslav (advisor)
This doctoral thesis studies the non-uniform blade cascade for centrifugal pumps. Influence of non-uniform blade cascade is investigated on the impeller and diffuser. A non-uniform blading impeller of pumps in this doctoral thesis was examined in terms of influence on efficiency characteristic. The idea of using non-uniform blading is to obtain a flat efficiency characteristic. Then the centrifugal pump could be used on larger scale of power with achieving a sufficiently high efficiency. The work is based on experimental measurements and numerical simulations of non-uniform hydraulic pump components. Non-uniform impeller and the diffuser were newly designed for this research. A new measuring track of small submersible pumps was needed to design and build for measurements. Different pump combinations with conventional hydraulics on one working point and hydraulics with non-uniform were measured. All measurements were evaluated and characteristics of efficiency, head and power were obtained for each measured combination. Some of pump combinations (which were measured in experiment) were numerically simulated by program Ansys Fluent. Data needed to evaluate the characteristic of efficiency and specific energy were collected from each numerical simulation. A theoretical consideration concerns the influence of non-uniform blade cascade applied on diffuser. The suggestion how to decrease hydraulic losses in canals was done. The theoretical consideration how to make a flat efficiency characteristic was made.
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Methodology of the Cooperation between the Director and Actor and Contermporary Theater Practice
Glogrová, Kateřina ; BURIAN, Jan (advisor) ; HRBEK, Daniel (referee)
The thesis deals with the cooperation between the director and actor during individual phases of the staging process as they appear in everyday theatre life. The indiviual phases of the staging process are supplemented by the author's own experience with managing the actors, which she gained especially in the course of her studies at the Drama Faculty of AMU. The second part of the thesis investigates the issues of inner truthfulness and the possibilities of its achievement within the production of a play. As a part of collecting the material for the thesis, the author conducted a research, which included interviews with three professional directors - Hana Burešová, Ladislav Smoček and Štěpán Pácl, whose methods of work are described. In the final part of the thesis the author states that it is difficult to draw general conclusions about the cooperation between the director and actor because it is always of subjective nature. The issue of inner truthfulness is similarly difficult to generalise. Due to the multiplicity of options, however, neither of them loses attractiveness for further research.
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: Time Requirement for Basic Nursing Care Procedures
SOUMAROVÁ, Iveta
A large number of nursing procedures are carried out in each ward in every hospital every day. In its theoretical part, this Bachelor thesis presents twenty basic procedures. The goal of the thesis was to find out what the most used nursing procedures are and to map the time consumption for individual nursing procedures. The quantitative research method was applied in the Bachelor thesis. Data were collected by measurement of time consumption of ten individual nursing procedures. These ten procedures were selected from a list of most used nursing procedures. Performance of the procedures was observed at the internal and surgical wards of the Hospital in České Budějovice. Both wards were observed over a 3-day span. Ten most often used nursing procedures were selected from the total number of procedures identical for both wards. Correctness of inclusion of the procedures was evaluated by the chi quadrat test in a contingency table. In addition, each of the ten most used procedures was measured ten times at each ward, from the preparation to the clean-up of instruments. The individual time values were averaged and presented along with conclusive deviations. A conformity with or difference in the time consumed was tested statistically by using the F or T test, where the applied significance level equals 5%. The research group was composed of the nurses and ancillary nursing personnel. Results are presented in graphs and tables. The following procedures differed in the individual wards: administration of medicines per os, serving of meals, venous blood sampling and blood pressure measurement. The bachelor thesis is focused on the time consumption for individual nursing procedures. The time consumption and the frequency of the individual procedures can serve as a base of explanation of the number of employees to the nursing management.
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The Use of the Addictive Drugs by the Seniors
KOPAČKOVÁ, Dominika
The bachelor thesis deals with using addictive substances by senior citizens. The age cathegoty 60+ should not be omitted when speaking of using addictive substances. Even senior citizens are users of some addictive substances, especially drugs. The thesis is divided into two parts, theoretical and explorative one. There are four chapters in the theoretical part (Old age and ageing, Substance addiction, Addictive substances and their classification, Usage of addictive substances in the old age) and summarizes the knowledge from recent literature about this topic. First, the old age and ageing are described. This chapter deals with ageing and old age of the human. This work describes the right mental hygiene, too. Multi-factorial manifestation of the old age (biological, psychological and social) is mentioned as well. In the second chapter there are described the factors that increase probability of the addiction origin. These factors can be genetic, biological, and psychological. There are mentioned some system models of the formation, development and maintenance of addiction, dependence and definition of the signs that addiction manifests. The third chapter divides addictive substances between legal and illegal. There are their effects, impacts on the human organism decribed. The group of legal addictive substances are included tobacco, alcohol, drugs and certain foods. Illegal substances represented here by cannabis, hallucinogens, stimulants, opiates. The last fourth chapter focuses directly on the addictive behaviour of the senior citizens. Seniors are also users of substances with addictive potential. At first alcoholism is mapped, other chapters devote addiction to nicotine, drugs and narcotics. The main goal of the thesis is to determine whether seniors use an addictive substance. A partial goal of is to find out the extent and cause of using addictive substances by the senior population. To find out these goals there were used the principles of quantitive research. To collect the data there were used questionnaires, created all by the author. The questionnaires were created with open and closed questiones and used in the printed form. The research has been conducted in Sušice and its close surroundings in February 2015. Respondents were the people with the least age limit of 70 years. These were 40 people living in their households or home for elderly. The results show that also amongst senior citizens can be found those ones who use the addictive substances. Current problem are by the doctor prescribed drugs. Today´s senior citizen uses drugs regularly, very often also combination of more drugs. Seniors often use medication to relieve the pain because the pain occurs more frequently. They use drugs to help them sleep better, too. The next group of addictive substances, which this chapter deals with, are drugs with a shoothing effect. There are smokers between the senior citizens who bare this bad habit from their midlife. Some research shows that cannabis helps people with Parkinson's and Alzheimer´s disease. Seniors do not use cannabis for these purposes because it is not legal. Alcohol is drunk by older people on occassion, on the other hand there are also people who drink such an amount that is not considered as not-risky. Seniors do not drink so much on one occasion, compared to the young generation. In the thesis this problem is described more detailed. Results of the research can be used by lay public to understand issues of addictive substances better. This thesis can be source of information for students of healt-social fields of study and it can improve the awareness about reasons of using addictive substances amongs senior citizens.
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Effect of a graduate of field of study Special Education - tutorship in practice of providers of social care
SALABOVÁ, Jana
Theoretical part of the thesis is divided into 4 main chapters. First one deals with the helping professions generally, their definitions and definition of the Special education - Tutorship branch of study per se.It also briefly touches the subject of readiness of the future graduates to deal effectivelly with the challenges of a career in the field of social services. Chapter number two is called Special education and it defines the subject of special education itself, it's purpose and inner structure. Third chapter focuses on social services. It brings up it's definition and types and forms of social services.It also contains the examples of the institutions which fall into this category and it's providers. Chapter number four, which happens to be the last one in the theoretical part of the thesis, covers the role and purpose of graduates of the special education - tutorship studies. It brings up the definition of a social worker, necessary prerequisites as well as beneficial personality traits and feautures. In a subchapter of chapter four is a short description of a pedagogue tutor. Definition who he actually is, who are proper candidates for this position, what are desired personality traits we look for in tutors and the actual content and purpose of their work in institutions providing social services. The end of chapter four is dedicated to a position of a social worker. His activities, the position and definition of a personal assistant and again personality traits needed for a successful career in this field. The objective of the practical part of the thesis is to describe working of Special education - tutorship studies graduates in practice. Particularly their experiences "from the field", how do they evaluate the level of skill of fresh graduates during their first encounters with the reality, how satisfied are they with their choice of a career so far and what was their motivation to pursue such career. Practical part of the thesis includes qualitative research. To meet the above objectives, data collection technique had been chosen using a structured interview with the respondents, who were graduates of Special education tutorship studies. You can tell by the results of this thesis that graduates in the field of social services apply mostly to lower positions as a social service workers, even though they are qualified to perform as a social workers. The age of clients with whom the respondents work ranges from childhood to senior. The motivation that led those questioned respondents to the decision to choose the area of social services varies. Some reported that they were influenced by the actual practical experience during their studies at the university, when both the work itself and their enthusiasm for the target group played role. Others expressed they had previous experience working with people with disabilities or they just wanted to acquire new experiences. Also, involvement of a family member and their previous education was a motivation. Job satisfaction is evident from observed data, and it also contributes to work done accurately and responsibly. Personal benefits for the respondents according to findings are usually their usefulness at work, new experiences they are getting and last but not least advances of their clients. As the biggest advantage the respondents usually mention variability of their work, target group and the clients in itself and the fact, that their work is highly satisfying and they basically work in a very pleasant team of individuals. On the other hand, not exactly satisfying financial reward and challenging working hours are mentioned as disadvantages. Special education - tutorship studies - the branch they've studied, is by the majority of respondents considered to be beneficial for them and they especially highlight practical impact of practice they completed during their studies and which included visits to various relevant institutions.
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Oxygen therapy after cardiothoracic surgery from the point of view of nurses and patients
VRCHOTOVÁ, Klára
Cardiac surgeries are very serious surgical procedures with considerable specific features. This bachelor thesis focuses on oxygen therapy from the viewpoints of nurses and patients. Its theoretical part describes physiology of breathing and the oxygen therapy as such. It describes individual sources of oxygen and indications for oxygen administration. It also describes principles to be observed during oxygen administration. Specific aids are used for oxygen administration, particularly oxygen masks or oxygen goggles. Quality pulmonary rehabilitation is also necessary to make oxygen therapy more effective. Pulmonary rehabilitation is particularly important for patients after a cardiac surgery and it should be practiced even before the surgery. This approach is critical because in the post-surgery period the therapy makes it possible for the patient to breathe and to expectorate properly. Pulmonary rehabilitation is practiced with patients by general nurses at the cardio surgery ward, as well as by physiotherapists. There are various techniques available to determine efficiency of oxygen therapy and pulmonary rehabilitation. The techniques may be classified as invasive and non-invasive; the most frequently used non-invasive method is pulse oxymetry and the most frequently used invasive technique is blood collection for ABR. Two objectives were set for the thesis. The first objective was to map knowledge of nurses about how to provide care to patients treated with oxygen therapy. The second objective was to determine how the patients feel after a cardiac surgery. Two hypotheses and two research questions were formulated. The first hypotheses were: Nurses working at the resuscitation care station have more knowledge about oxygen therapy than nurses working at the intermediate care station. The second hypothesis was: Nurses working at the resuscitation care station have more knowledge about pulmonary rehabilitation than nurses working at the intermediate care station. The first research question was: How do the patients feel during oxygen therapy and pulmonary rehabilitation? The second research question was: How are the patients after a cardiac surgery informed about oxygen therapy and pulmonary rehabilitation? In the research part of the bachelor thesis I have used both quantitative and qualitative research methods. Quantitative processing of data was used for questionnaires filled out by nurses working in the hospitals Nemocnice České Budějovice a.s., Nemocnice na Homolce in Prague and in the faculty hospital Královské Vinohrady in Prague. The method was used for evaluation and assessment of knowledge of nurses working at the resuscitation and intermediate care wards. Quantitative methods were used for processing of data obtained through semi-structured interviews with patients after a cardiac surgery. The data were transcribed and coded using a pencil and paper method. The data were categorized based on the identified codes. Two categories were created: oxygen therapy and pulmonary rehabilitation. Each of the categories was further divided into three sub-categories. Two categories were created for the research oxygen therapy and pulmonary therapy. Three sub-categories were subsequently created for the oxygen therapy and the pulmonary therapy. The quantitative research has shown that the knowledge of nurses about oxygen therapy is higher among the nurses working at the resuscitation care ward. However, the situation is different in case of their knowledge about pulmonary rehabilitation. In this case the knowledge of nurses working at the intermediate care ward was higher. The processed data from the qualitative research have shown that patients do have sufficient information about post-surgery oxygen therapy, as well as about pulmonary rehabilitation. For all patients in the post-surgery period after a cardiac surgery the frequency of pulmonary rehabilitation was higher than 1 per day.
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A nursing issue: peripheral venous catheter
TOMÁNKOVÁ NOVÁKOVÁ, Monika
Peripheral venous catheter is used to access the venous system. It is one of the most commonly used invasive procedures in health care facilities. This procedure falls within the competence and daily tasks of nurses. Therefore this type of nursing care is susceptible to risk of proceeding routinely which might result in conscious or unconscious errors. Peripheral venous catheter needs to be introduced into the patient's vein in the following cases: planned parenteral nutrition, infusion or transfusion therapy, application of intravascular medication or contrast media, rehydration, blood sampling (which can be performed immediately after introducing the peripheral venous catheter and before administrating medication) and also during an emergency care for critically ill (such as cardiopulmonary resuscitation). Nurses should be as knowledgeable as possible about this issue so that the peripheral venous catheter can be introduced well and fulfil its purpose. It is important to ensure that nurses obtain all the necessary information about their patients before inserting the catheter and that they are able to properly inform the patients about the procedure and to communicate with them. Next, nurses should be familiar with the correct procedure for inserting catheters, they should be informed about possible contraindications and know how to choose the correct type of catheter as well as where to place it. Furthermore, nurses should care for this vascular access correctly and provide the patient with enough information about taking care of the catheter after the procedure. Finally, nurses should be aware of their own potential errors and also of possible complications. Therefore they should employ aseptic technique so that they can eliminate nosocomial infections. The thesis is divided into a theoretical and an empirical part. The theoretical part focuses on the history of peripheral venous catheters and their types, indications and contraindications, necessary equipment, nursing care, complications, etc. The empirical part consists of a research. The aim of the thesis was to map the use of peripheral venous catheters in hospitals as well as to identify factors that may lead to problems among the patients with peripheral venous catheters. Four research questions were assigned to these aims. 1. What is the procedure prior to inserting a peripheral venous catheter? 2. What are the standards of caring for patients with an inserted peripheral venous catheter? 3. In which steps of caring for peripheral venous catheters do the nurses lack knowledge? What equipment do the nurses prepare in order to insert a peripheral venous catheter? The Bachelor's thesis was conducted using a qualitative research survey. The methods of collecting data included semi-structured interviews and participant observations. The research was carried out only in one hospital ward and it was anonymous. First, the data were collected by means of a semi-structured interview. The nurses were asked 14 questions (see Appendix 8). During this interview, several more subquestions were added. The results of the interviews were then grouped into several categories for the sake of clarity. The second method of collecting data was participant observation. The observed facts were recorded into an observation sheet (see Appendix 9). The same nurses who were interviewed were also observed. This Bachelor's thesis has been written in order to provide a basic overview of the peripheral venous catheters. It could be used as an information source for more experienced as well as novice nurses. The practical output of this Bachelor's thesis is a nursing care standard concerning peripheral venous catheters. This standard was missing in the hospital ward and could help the nurses to take care of these vascular accesses, to proceed correctly and eliminate possible errors (see Appendix10).
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