Damming disrupts natural sediment flow to downstream resulting in legacy sediment accumulation. Legacy sediments have been well investigated in streams throughout the Piedmont region; however, there is no research of legacy sediments following dam removal in low-gradient Coastal Plain streams. Research objectives were to: characterize legacy sediments in a low-gradient stream restoration, quantify pre-impoundment accretion and carbon dynamics, and assess current sediment deposition rates via 14C analyses within sediment cores and sediment collection tiles. Carbon accumulation and accretion rates of modern tidal sediment have reached that of the tidal relic benchmark and current sediment deposition rates are similar between the natural reference and restored tidal wetlands. At this site, the pattern of legacy sediment accumulation and stream incision was reversed relative to previous studies in higher gradient systems. Results suggest in dam impacted Coastal Plain streams, legacy sediment may become a benefit rather than a liability for downstream tidal wetlands.

Magister Public Health - MPH / Promoting positive and healthy decision-making practices and encouraging the utilization of health care facilities amongst adolescents is an important public health priority given that the period of adolescence is characterized by experimentation and risk taking behaviour. In the Tafelsig area of Mitchell‟s Plain, a poor socio-economic community within the Cape Town metropole, adolescents are exposed to a range of social problems (such as alcohol and substance abuse) that can potentially be harmful to their health. Given this context there was some concern raised by the sub-district health management team that adolescents are not making sufficient use of the local health facilities. The purpose of this study was to gain a greater understanding of the factors that contribute to, or hinder, the utilization by adolescents of the public health facilities in the Tafelsig area and in turn provide the Department of Health with information on adolescents‟ preferences concerning access to and use of the local primary-level health services in Mitchells Plain.An exploratory descriptive study was conducted to explore the topic using qualitative research methods. Permission to conduct the research was obtained from the Higher Degrees Committee of the University of the Western Cape and the School Principal. In-depth interviews were conducted with eight Grade 9 and seven Grade 10 male and female learners from the local secondary school - all of whom were randomly selected from a list of learners who indicated their willingness to participate in the study and who had obtained the written consent from their parents or guardian to do so. Interviews with the learners explored the positive and negative experiences, perceptions and opinions they have of using – or contemplating the use of – the local health facilities. The data from these interviews were analyzed using thematic content analysis.The study demonstrated that even when public health services are available, adolescents are often not in a position themselves to choose for themselves: their parents or guardians invariably make the choice for them. At times they are also reluctant to use public health facilities for fear of being judged by health personnel for being sexually active. The idea of waiting for long periods of time to see a health professional, or being observed at the health facility by other members of their community, are also considered to be disincentives.Many of the learners interviewed expressed a need for more information about sexual and reproductive health issues and matters that affect their health. The findings of this study also suggest that there is an urgent need for youth-friendly health services to be made available in the Mitchells Plain community. It is thus recommended that the Department of Health strategically assess whether an existing public health facility can be re-orientated to cater for the specific health needs of adolescents in Mitchells Plain.

A presente Dissertação é um estudo a respeito da problemática da utilização dos Sistemas de Aquecimento Solar Térmico para Aquecimento de Água com Coletores Planos em Circuito Direto, no crítico contexto da construção civil paulista para o ponto de vista da Arquitetura e do Urbanismo. Apesar do potencial solar do país e do padrão construtivo dos condomínios horizontais fechados da Região Metropolitana de São Paulo (RMSP), ainda não há regulamentação do uso do aquecimento solar térmico em alguns de seus municípios-sede. Atualmente tem havido a adesão espontânea ao sistema por parte de moradores das residências desses condomínios, decorrente da busca da redução dos gastos e da crescente conscientização ambiental e divulgação da tecnologia. Porém, ainda há necessidade de uma relação mais sistêmica dos coletores solares com a totalidade dos requisitos da edificação e do meio urbano, mesmo em se tratando da legislação específica. Buscando uma constribuição, aqui se propõe um modelo de estudo dos coletores baseado em escalas construtivas que, juntamente com a compreensão multidimensional do assunto, desafiam a atual dicotomia entre as ferramentas de qualidade e a sustentabilidade do ambiente construído. / The present work studies the problematic of using Solar Hot Water Systems by Direct Circuit, among the critics characteristics of civil construction in the State of São Paulo, Brazil. The point of view is of Architecture and Urban Planning. In spite of the high Brazilian levels of solar irradiation and the constructive pattern of horizontal closed condominiums of the metropolitan region of São Paulo (Brazil), which possess a large concentration of high incoming households, use of solar water heating is still not regulated in some of its comprising municipalities. Nowadays, the search for savings, diffusion of related technologies and raising environmental awareness have led to voluntary uptaking of such systems. Yet, regulation of solar collectors still lacks relating to certification of sustainable building practices, which does not relate to architectonic factors, in particular to main urbanistic features present in each given installation site. This work proposes an architectonic scale based model of studying it in order to pursuit the end of dichotomy between quality and sustainability.

Theoretical analysis (i.e. simulation) promoted by the laboratory tests of final product is the important aspect for determination relating to choice and using the new infrastructural constituent. However, the laboratory analysis does not need to make conclusive results in some cases. At that time, it is necessary to complete the process of validation by the measurement in-situ (directly in the track section). The European legislation requires the long-term monitoring of the test constructions in this case. During this time, both the periodic monitoring of the chosen parameters and the following comparison with reference construction are recommended. The reference construction shall be inserted to the same track section and in the same time period as well as the test construction. The track gauge, the longitudinal shifts of rails vis-a-vis the sleepers, the clamping force of fastening, the rail head profile, the sleepers and the state of rail fastenings are possible to classify like the long-term monitored parameters. All these characteristics are so-called static. They are checked in time when no carriages pass through the monitored track section. However, the analysis and determination of the test construction behaviour (dynamic characteristic) are the most accurate by the moving load. Dissertation thesis is focused on measurement and analysis of the dynamic effects at the plain line. The aim of the thesis is the completion of recent system of the new track structures verification for the dynamic parameters observe. Methodology of the measurement and convenient mathematical apparatus for analysing the dynamic effects is proposed.

Subjekt of this diploma thesis is createing of 3D model of a balancing shafts and a dynamic model of the balancing shaft and needle roller or plain bearings. To decide from the results of dynamic analysis in MBS (Multi-Body-System), which type of bearing is the best for storage the balancing shaft in the engine Zetor type series III.

This thesis deals with the hydrodynamic plain bearings tractor diesel engine. The first part is closer acquainted with the hydrodynamic bearing, its principles and materials used. The next part work deals with the multibody system adams-engine. The main part of this work is to model the crank mechanism and its storage in hydrodynamic bearings in the MBS program and the subsequent simulation under different operating conditions.

The thesis deals with complex connecting rod design of two stroke diesel engine with regard to minimising its weight. Three versions of design are suggested and for each of them the stress analyses are implemented and the fatigue safety factors are determined. On the basis of results of implemented analyses and evaluation of all the aspects the most appropriate design is chosen and the production drawing is drawn according to it. In the conclusion, hydrodynamic lubrication plain bearings, which are the integral part of every connecting rod, are designed.

The doctoral thesis deals with the topic of exihibiting empty gallery space. The purpose is to clarify the specifics that accompany the exhibited empty gallery and to define the essence of more general patterns of exposition in the gallery space. Doctoral thesis also presents the special simple void that generates art itself. Finally, the text reopens a polemic within the institutional theory of art. Doctoral thesis criticizes the established terminology related with exposition of the empty gallery.

The diploma´s thesis deals with evaluation of adjusted track tamping technology and its comparison with currently used technology. This is based on track geometry parameters measuring and its vertical movement on the test section, which was created on double track Břeclav – Přerov near Rohatec station. On this test section one line was tamped with the currently used method within regular maintenance work and the second line was tamped with the adjusted technology. The technology modification is based on application of increased number of tamping tines squeezing strokes, which results in a creation of bigger and more compacted sleeper bed. The point of this thesis is to verify, that the speed of the track geometry parameters degradation is smaller in case of adjusted technology use. Thanks to that it would be possible to extend the maintenance cycles in case of compliance with track parameters maintenance limits and traffic safety.

The diploma thesis is based on design of a multifunctional building in Lazany. The object is situated in a build-up area. There is the patisserie and the grocery on the first floor. There is six flats on the second and the third floor. The building has three floors without a cellar. There is a parking for customers and tenantry of building. The object is based on the footings of plaint concrete and it is used the building system POROTHERM. The ceilings are made of ceiling panels SPIROLL and the roof is flat.