National Repository of Grey Literature 11,638 records found  previous11 - 20nextend  jump to record: Search took 0.35 seconds. 

"Escape to the woods and for adventure" and his representation in Czech literature from the first half of 20. Century
NĚMCOVÁ, Věra
Bachleor work focuses on adventure stories in the Czech environment in the first half of the 20th century, especially on literature concerning the origin and expansion of tramp movement in our country, which is as a phenomenon. "Escape to the woods and for adventure" reflect in social life and literature influenced by running events. The student will follow different representations of this phenomenon especially in the literature type of "Rodokaps". It is also focused on the work of the German author Robert Kraft. This section includes a brief biography of the author, his work, and characteristics of the nine major novels that are connected by character hero Nobody.

High-Quality Shadow Rendering from Complex Light Sources
Navrátil, Jan ; Sochor, Jiří (referee) ; Navrátil, Jan (referee) ; Zemčík, Pavel (advisor)
V interaktivních aplikacích jsou stíny tradičně zobrazovány s pomocí algoritmu založeným na stínových mapách. Nevýhodou toho algoritmu je, že stínová mapa, reprezentovaná texturou, má pouze omezené rozlišení. To může vést k nepěkným vizuálním artefaktům objevujících se na hranách stínů. Tato práce představuje postup, který je založen na vylepšené deformaci textury. To umožní zobrazit scénu obsahující složité světelné zdroje, zredukovat artefakty na hranicích stínů a také vylepšit kvalitu stínů bez ohledu na typu scény a její konfiguraci.

Adolescent overweight and obesity
JINDROVÁ, Kateřina
My bachelor´s thesis deal with obesity of adolescents and problems with overweight. These problems are described in details, and after that divided into specific parts. The main goal of my bachelor´s thesis is to chart problems with obesity and overweight in age group from 15 to 18 (adolescents) and primary describe their eating habits and physical activity. Theoretical part is focused on occurrence of overweight and obesity in the Czech Republic and in the world, causes of its origin, risk factors, classification and diagnosis, types, therapy and prevention. This bachelor´s work dealing with rational diet, describing basic principles of healthy catering and explaining right or wrong foodstuffs. I point mainly on prevention of overweight and obesity by healthy eating and physical activity. Methodical part is processed thanks to quantitative research. Data were gained by questionnaires, which were given to high school students (1st - 3rd grade). The research group contains 150 respondents from different schools in České Budějovice and close neighborhood. Final results are written down primary in graphs with commentary and data charts. In case of right use of qualitative research, there were determined two hypotheses. First hypothesis: Overweight and obesity is more occurred at adolescents with wrong eating habits. Second hypothesis: Overweight and obesity is more occurred at adolescents with low physical activity. For developing exploratory part, there was used quantitative research, which was provided by questionnaires given to students of age from 15 to 18. Entire data were processed by the use of program Microsoft Excel, and its calculations and functions. The answers of respondents were registered into database, and, by using specific excel functions, I was able to report data in determined categories. The research was mainly concentrated on physical activity and eating habits. Final results are put into well-arranged graphs, which are always enriched by comments, eventually completed by data tables, and, subsequently, statistically evaluated. In results, there might be seen two main differences between adolescents with standard weight and adolescents with overweight or obesity problems. One of those is irregularity in eating and wrong eating habits; big difference is also proved in physical activity. Adolescents with obesity or overweight have often irregular food intake, they drink a lot of high caloric beverages such as Coca-Cola, Sprite, Fanta etc., deficient income of fruit, vegetables, legumes, fish, or low physical activity. Only few of obese adolescents is different, because their problem is caused genetically. Adolescents with standard weight eat more regularly, but there are also some special cases, who have similarly wrong eating habits as obese people; however, all of these adolescents have one typical quality regular physical activity. Both hypotheses are confirmed. The results show that obesity is mainly caused by genetic predispositions, but these factors can be positively affected by periodic physical activity or appropriate eating habits. At the end of the thesis, it should be mentioned that it is necessary to be focused on right eating habits and regular physical from the very young age, when the basic customs and habits are assumed. That should include parents' action around their children, as they are usually the first example and they have the biggest influence.It is important to develop knowledge about all kinds of prevention, which are in most cases major in defending against formation of overweight and obesity.

Human and social capital in primary education
KOKŠTEIN, Jiří
The thesis contains a theoretical insight into the studies that the issue of human and social capital involved from different perspectives, engage their evolution over time, their measurability, examine them, and complemented with other evidence. This part contains relation of human and social capital in relation to the aging of the human population and focuses on the human capital of older workers. Theoretical study ends with an insight into the basic education, the role of teacher and seeks to provide information on surveys already conducted in the area of education, which in the application of serve for me compared to the data obtained from the survey. The application part is focused on the teaching staff of primary schools. Education in currently globalized world, changing not only its content but also methods and forms of work. Irreplaceable role in this process is played by educators. To meet all the demands placed on them, it is essential that they pay close attention to their continuing education and sharing of acquired education, which is essential to the growth of human and social capital, because they are interacting. The work examines selected sample of teachers and approaches to this issue by detecting what is education motivates them whether they are satisfied with the benefits of educational events, what type of education they prefer etc. Working findings further analyzes looking for relationships between age and sex educators according to the hypotheses . Educator is someone who is in constant contact with other people. This of course also formalizes its attitudes and experiences. As a human being perceives the views of society and shapes on her own views, which it subsequently may influence the exercise of his profession. Therefore, in this part of the thesis is dedicated to exploring and bridging social capital, which determines the size of the circle of people with whom the teachers generally meet and interact. The last research that is possible to find thesis, it is perceptions of social status of teachers by themselves.

Nursing procedures in taking blood pressure
SEDLÁKOVÁ, Tereza
By blood pressure is meant lateral pressure or the side pressure of a blood column on the side of a vessel. The pressure is created thanks to the action of heart as a blood pump. This pressure is not the same in different parts of the bloodstream. By the blood pressure is meant the arterial pressure or pressure in the artery, so the pressure in big blood vessels. The highest values are reached in the expulsion phase of the heart action, which is called systole. The lowest values are reached in the phase of filling heart chambers, which is called diastole. The sole nursing procedures required in the process of taking a blood pressure reading are many and all must be followed. This thesis is composed of a theoretical part and practical part. Introduction to the theoretical part is composed of the main terminology from the physiology of blood pressure. In the theoretical part we follow with division on hypotension and hypertension, which are the most common diseases related to blood pressure, with diagnosis and recommendation for treatment. This thesis also offers information about measuring blood pressure by the invasive and the non-invasive method. The theoretical part is focused on the importance of the nurse in the process of measuring blood pressure with emphasis on her knowledge and practical skills.

Nursing care management of patients after intrapleural chemical pleurodesis
KIESEWETTEROVÁ, Renáta
The pleurodesis is a treatment method for patients suffered from the symptomatic malignant pleural effusion. The goal of the pleurodesis is to close a pleural area by connection of visceral and parietal pleura in order to reduce or terminate production of pleural effusion. The sterile talc powder is the world's most used agens within a practice. After a parental analgesic is the powder (as a sllury) either applicated into a pleural cavity through the chest drainage or surgically dispersed over the treated (via abrasion, decortication) pleural space during the thoracoscopy/thoracotomy. This diploma thesis focuses on the treatment technique of bedside talc-pleurodesis through the chest drainage. The nurse has an irreplaceable role in the whole process from a preparation of patient to assistance by intrapreural application, to care of patient after the operation or serves as a physical support during potential complications. The aim of the presented work is to detect priorities in nursing care and find out whether patients need increased care after intrapleural therapy. The qualitative research method was chosen for the analysis where semi-structural interview with open questions were used. We created case reports analysed with the adaptive model of Callista Roy as well. The research sample contained patients chosen with respect to specialization of researched problem. We set two basic focal stimuli according to the analysis of respondents´ reactions. These stimuli serve as a basis for determination of priority parts of the nursing care by patients after bedside pleurodesis. We defined the need to be without pain and the need to ensure safety and certainty as a central focus of the nursing care. Among secondary fields of nursing care were identified sleep disturbances and limited mobility, which leads to reduction of self-care in getting dress, hygiene as well as in defection and miction. We found out within the second goal identical intensity of the nursing care before and after bedside talc-pleurodesis. This statement is based on comparison of interventions before and after aplication analysed via adaptive model by Roy. Nevertheless, causes of interventions were modified to a certain extent. The main goal of diploma thesis was to map requirements for high-quality nursing care related to bedside talc-pleurodesis via chest drainage. The work should extend theoretical basis not only for nurses in clinical practice.

Nové postupy biomonitoringu cizorodých látek ve vodním prostředí
ČERVENÝ, Daniel
Within the presented work, several approaches of biomonitoring were studied. A well-established method for human health risk assessment was applied to evaluate the quality of fish from open waters in the Czech Republic. As this work is targeted on sport fishermen, who frequently consume their own catches, besides the publication in scientific journal, a brochure with results of this study was distributed via the Czech Fishing Union. Health risks for consumers related to the consumption of wild fish were found strongly species and locality dependent. As there is no risks related with the consumption of carp (Cyprinus carpio) at all investigated sites, frequent consumption of predatory fish should be avoided at some fishing grounds. The use of passive samplers has become more and more attractive in the last two decades. As these devices are able to mimic the biological uptake of chemicals, their potential for replacing fish as bioindicators in routine biomonitoring programmes is evident. In our study, the comparison between analysis of fish tissues and POCIS extracts from selected sampling sites confirms this idea about interchangeability of these indicators in the case of PFASs as target pollutants. Moreover, no metabolic transformation of contaminants present in water take place in passive samplers contrary to living organisms, thus these reflect the actual contamination at the locality more precisely. The use of passive samplers completely fulfils the internationally accepted principles of Replacement, Reduction, Refinement (the three R´s). Another promising approach using YOY fish as bioindicators was evaluated within the present study. Multispecies samples of YOY fish homogenate was found as a better indicator for wide range of pollutants than muscle tissue of adult fish within one species from the same locality. As all inner organs and tissues are presented in analysed samples, more target pollutants in higher concentrations are detected compared to the muscle of adults. Besides the higher sensitivity in pollutants detection and quantification, practical and economic benefits are of concern in the case of the YOY fish approach. The YOY fish approach also particularly fulfil the three R´s strategy, as sampling of this age group of fish has a smaller impact on the environment than the sampling of adults. In case of mercury, that was found as a limiting contaminant for the consumption of fish from open waters in the Czech Republic, a nonlethal method of finclips sampling can be used for the monitoring of this compound in aquatic environments. Besides the monitoring, our optimised method for the estimation of muscle tissue concentrations could be used for human health risk assessment as well. The difference between real muscle concentrations and concentrations estimated using our method differs less than 10% in most of the investigated localities. Benthic organisms are an important part of the food web in aquatic environments, but insufficient information about its contamination is available. In another study included in this thesis, first evidence about bioaccumulation of certain pharmaceuticals in benthic organisms was described. Although, pharmaceuticals are generally considered to be not accumulative in organisms, our study proved that certain pharmaceuticals have bioaccumulation potential. From this finding, it is evident that not only the concentrations of pharmaceutical dissolved in water but also the diet represents an important exposure pathway of contamination by these compounds for organisms (fish) inhabiting aquatic environments.

Iniciace pohybu byčíku, signalizace a regulace pohyblivosti spermií ryb: fyzikální a biochemické řízení
PROKOPCHUK, Galina
The current study attempted to shed light on the regulatory processes and response arrangements of fish spermatozoa during the course of maturation and motility initiation. The first intent of this study was to improve the understanding of the mechanism underlying the acquisition of potential for sperm motility in sturgeon. Up to present work, the physiological process underlying sperm maturation in this species has not been described at all. Our results showed that sperm maturation in sturgeon occurs outside the testes because of dilution of sperm by urine and involves the participation of high molecular weight substances as well as calcium ions present in seminal fluid and/or urine. The second aim of the present study was to investigate the coping mechanisms in fish spermatozoa with osmotic and ionic activating mode, as well as in spermatozoa of euryhaline fishes, to various environmental conditions. We showed that alteration of environmental osmolality might affect the fish sperm in different ways, depending on fish species and modes of spermatozoa motility activation either osmotic or ionic mode. In response to osmotic stress caused by hypotonicity, carp spermatozoa regulated the flow of water across their cell membrane and increased their cytoplasmic volume during their short motility period. In contrast, no indications of sperm volume changes were observed neither in sterlet nor in brook trout spermatozoa, both of which having an ionic mode of motility activation. We also examined the mechanism by which sperm motility triggering in euryhaline fishes can adapt to a broad range of environmental salinity. Our results demonstrated that spermatozoa of euryhaline tilapia, Sarotherodon melanotheron heudelotii, reared in fresh-, sea- or hypersaline water can be activated in hypotonic, isotonic or hypertonic conditions of swimming milieu, provided Ca2+ ions are present at various levels. It was established that the higher the fish rearing salinity or the more hypertonic ambient media at spermatozoa activation, the higher extracellular concentration of Ca2+ ions is required. The results obtained in the present study allow suggesting that osmolality is not the main factor inhibiting sperm motility inside the testis in the S. melanotheron heudelotii. A third aim of this study was investigation of the regulation of motility initiation process and description of flagellar beating initiation in chondrostean spermatozoa. We detected that K+ inhibition of sperm motility in sturgeon can be by-passed due to the pre-exposure of sperm cells to a high osmolality shock prior to its transfer to K+-rich swimming media. Thus, we hypothesized that sturgeon spermatozoa may be activated by use of an unexpected signaling pathway, independent from regular ionic stimulation. The successive activation steps in sturgeon spermatozoa were investigated by high-speed video microscopy, using specific experimental situation, where sperm motility initiation was delayed in time up to several seconds. At motility initiation, the first couple of bends formed at the basal region begins to propagate towards the flagellar tip, but gradually fades when reaching the mid-flagellum. This behavior repeats several times until a stage where the amplitudes of bends gradually reach similar value, what eventually leads to sperm progressive displacement. The total period needed for the flagellum to switch from immobility with rigid shape to full activity with regular propagating bends ranges from 0.4 to 1.2 seconds. In conclusion, the results of the current study bring valuable pieces of information into the general understanding of the processes of maturation of fish spermatozoa, their adaptability to different physical and biochemical circumstances, the extra- and intra-cellular signaling as well as the regulatory mechanisms of motility activation in fish spermatozoa.

Relationship between the coat colour and melanoma occurrence in horses
Hovorková, Kristýna ; Hofmanová, Barbora (advisor) ; Majzlík, Ivan (referee)
The literary review is divided into two main parts, the first part is dealing with the coloring of horses and their genetic base and the second part is dealing with melanoma formations of horses and their division. In the chapter about several color types of horses there is a description of forming basic color types which is done by three locuses: COLOR, EXTENSION and AGOUTI. Locus COLOR (CREAM) controls whether or not to create pigment. EXTENSION locus controls about the type of pigment and AGOUTI locus controls the distribution of pigment. The next subsection gives a breakdown of the white color in horses. Greying proces is related with locus GREY where there is a loss of pigment and the coat itself. This process and mutation is commonly connected with dermal melanoma. Non-pigmented spots called vtiligos are connected with the greying process, which is more intense with increasing age. Vtiligios are commonly found in grey horses, at the same locations as dermal melanoma. The places are perianal area under the tail, around the vulva, lips, eyes and around the penis. Melanoma formations are divided according to whether they occur in Grey horses or other colored horses and whether they have a benign or malignant potential. A further breakdown of melanomas at grey horses is whether it is a separate, smaller segments or large, associated lesions, when this condition is called dermal melanomatosis. At the end of the thesis there is a description of the treatment options for melanoma. The most effective appears to be a surgical removal of smaller formations. There were studies which have examined the anticancer action of the drug cimetidine but the results are not yet sufficiently conclusive. As preventing the occurrence of melanoma in grey horses it is appropriate to implement the necessary measures and individuals who are concerned should not be included in the next breeding.

Comparison of HPLC a GC-MS method for pesticide determination in soil
Chalbia Václavíková, Alena ; Kočárek, Martin (advisor) ; Havlík, Jaroslav (referee)
Physical and chemical properties of pesticides may vary significantly. Pesticides can be acidic, neutral or alkaline. Some compounds containing phosphorus, other sulfur, nitrogen or halogens. These atoms can be important for the detection of pesticides. Some of the compounds are volatile, others on the contrary not evaporate, which is also one of the important properties for chromatography. The diversity of pesticides actually makes it impossible to create a universal method, which is very impractical in terms of quality and time determination. Because that pesticides are one of the most chemicals in most countries. In the food and drinking water are limits on pesticides in order to avoid negative impact on public health. For residues in soil or surface water limits are set. (Lutz et al., 2006) The objective of this thesis is to evaluate the possibility of using two types of chromatographs with different detectors for the analysis of pesticide. Pendimethalin which was chosen for this work, will be analyzed usinga liquid chromatograph with UV detektor and gas chromatography with mass detector. Both this method will be compared as well two extraction methods (Soxhlet extraction and shaking), and two extraction agents (methanol and acetonitrile). Another point of the work is to provethe hypothesis that, for the determination of pendimethalin in soil is by gas chromatography using a mass spectrometer in comparison with the high performance liquid chromatography time and more expensive, but will achieve a higher yield and a lower detection limit of the pesticide.