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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
741

Srovnání nákladů na rekonstrukce objektů občanské výstavby / Comparison of the cost of reconstruction of the civil construction

Wertheimer, Tomáš January 2018 (has links)
This diploma thesis is focused on several variants of original outside swimming pool in the town of Zábřeh for various variants of reconstruction from the point of view of the use of swimming pool material used in the territory of the Czech Republic. In the theoretical part are described structural factors of swimming pools from various points of view, as well as economic and investment analyses and factors. The practical part of this diploma thesis is mainly aimed to compare the prices. The comparison is based on the budget of reconstructions and possible investment return.
742

Možnosti úsporných opatření v bazénových provozech / Possibilities of saving measures in swimming pool operations

Litschmann, Patrik January 2020 (has links)
The diploma thesis deals with the current knowledge in the field of saving measures in swimming pool services. The theoretical part describes the typology of swimming pools and subsequently deals with the technological aspect, including heat management. Furthermore, the theoretical part describes in detail the possibilities of saving measures in public swimming pool operations, especially in sanitary facilities, including reuse of wastewater from showers as a water source, or heat recovery from wastewater. The knowledge from the theoretical section is then applied in the practical part, where saving measures are proposed on the public swimming pool.
743

Studie rekonstrukce úpravny bazénových vod letního koupaliště Břeclav / The study of the reconstruction of the pool water treatment plant of the summer swimming pool Břeclav

Urban, Jaromír January 2020 (has links)
The subject of the diploma thesis is to introduce the problems of communal spas, namely the treatment of water for swimming pools. Following is a proposal of reconstruction of the treatment plant for a real, operated area of the summer swimming pool. The thesis is divided into theoretical and practical part. At the beginning of the theoretical part I make research of the history of balneology, the effects of bathing and swimming on the human body, possible resources for spa purposes and hygiene requirements for these waters. I also describe commonly used methods of treatment of swimming pool water. In the practical part I first describe the summer swimming pool in the town of Břeclav. There is a description of the swimming pool, its history and equipment. In the next chapter I present the currently operated technological line. Based on a personal visit, the next chapter evaluates the technical condition of the plant. Based on this evaluation, a new technological line for treatment of swimming pool water of the Břeclav summer swimming pool is proposed.
744

The significance of swimming skills in Sweden : An analysis of Swedish Physical Education syllabi in regard to swimming ability in compulsory and upper secondary schools / Simkunnighetens betydelse i Sverige : En diskursanalys av kursplaner för idrott och hälsa från och med 1962 när det gäller simförmåga i grund- och gymnasieskolan

Shulika, Kateryna January 2020 (has links)
Introduction: In Sweden, it is vital that children acquire swimming ability at an early age because of the easy access to the sea, rivers, lakes, and swimming pools. Swimming ability is a life skill necessary for conducting outdoor life safely and using nature as an arena for recreation both near and in the water. Therefore, over the past century, swimming and water safety have been an essential part of the Swedish Physical Education (PE) subject to increase the likelihood that students will be able to save themselves and others from drowning. Aims: The aim of this investigation is to provide a greater understanding of the ways in which swimming ability has been described in Swedish PE syllabi for compulsory and upper secondary schools from 1962 to 2020.  Materials and methods: Discourse analysis (DA) has been used to analyze the Swedish PE syllabi from 1962 to 2020. Theoretical framework: This study is inspired in a Foucauldian genealogy perspective.  Results: Two main result categories were constructed from the analysis. (a) Swimming education has been present in all PE syllabi for compulsory school since 1962. These syllabi note that outdoor life, lifesaving, and swimming skills overlap and reinforce one another and suggest that swimming is an important part of Swedish culture. However, since 1994, the Physical Education and Health (PEH) syllabus for upper secondary school omits swimming skills from its content. (b) Swimming ability has a prominent position in the most recent (2011) PEH syllabus for elementary schools. Nevertheless, it is excluded from the 2011 PEH syllabus for upper secondary schools.Discussion Even though swimming ability is vital for safely conducting outdoor life and using nature as an arena for physical activity, as shown in the latest PEH syllabus, it has been excluded from current upper secondary education. Conclusion: The exclusion of swimming ability from upper secondary school syllabi may mean that some students, such as newly arrived students who migrate to Sweden, are denied opportunities to learn to swim and be safe close to and in the water.
745

Roubený penzion na Stříbrném dvoře v Jihlavě / Log Guest House on the Silver Courtyard in the Jihlava

Dohnal, Jakub January 2015 (has links)
The aim of this master´s thesis is to design a log house on a particular parcel near the city of Jihlava in locality called Silver Courtyard. There will also be designed a shooting range for shotguns and rifles with facilities for shooters on this plot. There are also designed cottages for four and eight people, which will be placed between the log house and the shooting range on the edge of the pond. The log house will include a swimming pool, a whirpool bath, restaurant and two lecture halls. Wall structure is designed from wood sandwich system from OK Pyrus. The log house has a partial basement where are garages and technical support for the operation of the building. On the ground floor are all operations. Attic is only for guests. The log house is covered with a gable roof with insulation above the rafters for the use of aesthetic perception of the supporting truss. Covering is from the folded concrete. The overall concept is based on a proposal of the smallest possible heat loss.
746

Plavecký bazén s posilovnou / Swimming pool with gym

Danielová, Petra January 2015 (has links)
The subject of the project is new building of indoor swimming pool with gym with dimensions of 63,2x32,4 m and guest capacity of approximately 250 000 people per year. The project is located in Valašské Klobouky (parc.č. 2210/1, 2200/11, 2203, 2194, 2210 / 3, 2210/35 in the cadastral area of Valašské Klobouky) owned by the city Valašské Klobouky. In the neighborhood, there is took place building of primary schools, kindergartens, health centers and boarding house for seniors. Location of buildings on the property (built-up area of approximately 1934 square meters) is based on the requirement to continoue to the existing complex of objects with maximaly utilization of space and orientation to the quarters. The building is divided into two parts by volume. From an operational point of view is divided into three functionally different parts ie. A cafe, gym and indoor pool. The parts are divided by materials. Café, entry and operational facility is from supporting skeleton system, which is equipped with a facade of cladding panels in a uniform grid in combination with glass facade. The supporting part of the hall with pools and gym is consisted of laminated wooden trusses, which hold up the roof and cladding with sheeting of TiZN. Southwest facade of pool hall, toward to the health center, is fully glazed. Glazed stripes are also between individual segments of glulam wooden trusses of hall and ensures even natural lighting of the hall.
747

Modeling of waste heat recovery system and outdoor swimming pool : Waste heat from hotel kitchen recovered by heat exchanger transferred to pool

Olanders, Linn January 2020 (has links)
This project was performed to evaluate if waste heat from hotel kitchens is enough to heat outdoor swimming pools in southern Europe or if it can be used as a compliment to another heat source. Another aim was to analyze the simulations and calculations of the pools and the heat recovery system. Then estimate how much annual costs would be reduced when using the exhaust air in the heat recovery system, in comparison with the original heating system. If the project showed positive results the purpose was to select a waste heat recovery system that can integrate with Ozonetech’s ozone generator, keep a high temperature in the pool and reduce emissions of greenhouse gas by using waste heat. Ozonetech would also conduct a pilot study in Stockholm and eventually develop their own product. A simulation model of three different outdoor pool sizes were conducted. The models were constructed and meshed in COMSOL Multiphysics. Average weather conditions for Malaga, Spain, were implemented in the model. The models were simulated by integrating each physical phenomenon in COMSOL, by using the Multiphysics interface. This created convection, emitted radiation and evaporation as thermal heat losses from the pool models. The pools were simulated to determine heating demand, heating period and required inlet temperature to make up for thermal heat losses. A mathematical model of the thermal heat losses and gains were conducted to easily receive a result for the heat demand each month of the year. A mathematical model of the possible heat recovery from hotel kitchens were performed to determine heat recovery for various kitchen sizes. By knowing the heat demand and possible heat recovery from different kitchens, a heat exchanger was selected. The heat exchanger was selected based on literature review, requirements and discussions with manufacturers. A life cycle cost analysis and calculated payback time compared original heating systems with new heat recovery system. A sensitivity analysis using Gauss error propagation concluded the project. The simulations showed that all investigated outdoor pools require additional heat during the night, due to extensive heating periods. Since the kitchen is only active during the day, the pool requires an additional heat source during the night. This conclude that the new heat exchanger only can replace the original heating system during the day. The mathematical model of the heat transfer from the kitchen determined that the maximum heat capacity approximately is 350 kW ± 10.5 kW. The waste heat can only be used to heat small and medium sized pools, since the heat loss is too great for a large pool. Selected air to water heat exchanger that meets the requirements is an air cooler with finned tubes from Alfa Laval. The fins and the coil should be treated to form an e-coat. After calculating the life cycle cost it was determined not profitable to replace a heat pump for a small pool, since the life cycle cost was greater for the new heating system. However, it is profitable to replace an electric heater with the new heat exchanger together with three of the smallest ozone generators during the day, for a small pool. Costs will be reduced by 44 600 – 202 000 kr ± 5%. Payback time will be 2.4 – 3.2 years ± 9%. It is also profitable to replace a water to water heat exchanger heated with either electricity or oil, during the day, with the new heat exchanger combined with either of the ozone generators for a small pool. Costs will be reduced by 310 000 – 698 000 kr ± 5%. Payback time will be 1.8 – 2.5 years ± 9%. It is profitable to replace all original heating systems during the day with the new heat exchanger combined with either of the ozone generators for medium sized pools. Costs will be reduced by 689 000 – 12 600 000 kr ± 5%. Payback time will be 2.2 – 22 months ± 7%.
748

Mécanismes de motilité et guidage sous flux des leucocytes humains / Human leukocytes motility and flow guidance mechanisms

Nègre, Paulin 18 December 2018 (has links)
La capacité des leucocytes à se déplacer dans tout l’organisme est indispensable pour une réponse immunitaire rapide et efficace. Leur migration, dite amiboïde, est caractérisée par une vitesse importante (10-20 μm/min) et une grande adaptabilité face aux divers environnements qu’ils rencontrent, qu’ils soient bidimensionnels comme la paroi luminale endothéliale ou tridimensionnels (3D) comme les tissus. Telle qu'actuellement décrite, la migration amiboïde requiert de l’adhésion ou de la friction avec un support solide. Nous avons ici montré que les lymphocytes T effecteurs sont capables de nager sans interaction avec un support solide. Le mécanisme de propulsion est basé sur le flux rétrograde d’actine qui entraine une brosse protéique de molécules transmembranaires liées au cytosquelette entrant en interaction avec le medium. Par ailleurs, lors de leur migration sur la surface luminale des parois endothéliales, les leucocytes sont soumis à un flux important et s’orientent par rapport au flux via des mécanismes mal déterminés. Nous avons montré que l’orientation des lymphocytes et des neutrophiles respectivement dans le sens ou à contresens d’un flux peut s’expliquer sans détection moléculaire du stress hydrodynamique. Le lamellipode pour les neutrophiles et l’uropode pour les lymphocytes est non-adhérent et s’oriente dans le flux comme une girouette dans le vent. La polarisation avant-arrière réaligne l’ensemble de la cellule dans le même sens que l’extrémité orientée par le flux. Le mécanotactisme des leucocytes sous flux repose ainsi sur des mécanismes passifs, c’est-à-dire sans mécanotransduction. / A fast and efficient immunity response needs leukocytes’ability to migrate within the entire organism. Their migration, called amoeboid, is characterized by a high speed (10-20 μm.min-1) and a great adaptability to move through various environment, either two-dimensional as luminal endothelial surface or tri-dimensional (3D) environment as tissue. Since the observation of leukocytes migrating without adhesion through solid 3D medium, amoeboid migration is described as requiring either adhesion or friction with solid support to permit motility. We showed here that effector T lymphocytes are able to swim without any interaction with solid substrate. Propulsion is based on actin retrograde flow coupled with transmembrane proteins linked to cytoskeleton (like integrins) which drag a brush of polymeric molecules in interaction with the medium. Furthermore, cell guidance is required for many crucial functions as organism growth or immune system. However, when crawling on luminal endothelial surfaces, cells are exposed to blood flow and they robustly orient either with or against the flow with unknown mechanisms. We showed that lymphocytes and neutrophils flow orientation can be explain without any molecular flow sensor of shear stress. Lamellipodium for neutrophils and uropod for lymphocytes is non-adherent and orients in the direction of flow like a wind vane. Front-rear cell polarization aligns the axis of the whole cell with the non-adherent pole oriented by flow. Flow mechanotaxis of leukocytes relies on passive mechanisms without mechanotransduction.
749

Swimming pool water treatment with conventional and alternative water treatment technologies

Skibinski, Bertram 22 February 2017 (has links)
To mitigate microbial activity in swimming pools and to assure hygienic safety for bathers, pool systems have a re-circulating water system ensuring continuous water treatment and disinfection by chlorination. A major drawback associated with the use of chlorine as disinfectant is its potential to react with organic matter (OM) present in pool water to form potentially harmful disinfection by-products (DBP). In this thesis, the treatment performance of different combinations of conventional and novel treatment processes was compared using a pilot scale swimming pool model that was operated under reproducible and fully controlled conditions. The quality of the pool water was determined in means of volatile DBPs and the concentration and composition of dissolved organic carbon (DOC). Further, overall apparent reaction rates for the removal of monochloramine (MCA), a DBP found in pool water, in granular activated carbon (GAC) beds were determined using a fixed-bed reactor system operated under conditions typical for swimming pool water treatment. The reaction rates as well as the type of reaction products formed were correlated with physico-chemical properties of the tested GACs.
750

Sportovní sebevědomí a jeho role ve sportovním výkonu / Sport confidence and its role in sports performance

Tesařová, Monica January 2019 (has links)
The main goal of the thesis is to build upon the existing research literature and to explore the relationship of sport confidence and sports performance, among which a positive correlation is often found. The theoretical part summarizes the present findings regarding this connection, as well as how sport confidence generally works, what constructs it relates to, or how it is measured. In the empirical part, quantitative research on a sample of Sri Lankan swimmers between 17 and 19, executed using the Sport-Confidence Inventory (SCI; Vealey, Knight, 2002), is then presented. Its results showed that participants scoring high at least in one of the three SCI subscales were performing better, regardless of how well the other components were developed, as opposed to participants whose scores were moderate in all the three subscales. The results also pointed to significant differences between the genders, where it showed that men generally scored higher on the level of sport confidence. Series of recommendations for trainers and psychologists working with athletes, but also for potential follow-up studies, can be drawn from the outcomes. Keywords: sport-confidence, multidimensionality of confidence, performance prediction, competitive swimming, SCI

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