Thesis (M.S.)--Michigan State University. Dept. of Fisheries and Wildlife, 2008. / Title from PDF t.p. (viewed on Aug. 10, 2009) Includes bibliographical references (p. 64-68). Also issued in print.

Submitted by Jorge Henrique Pedrobom (jorgepedrobom@hotmail.com) on 2016-07-25T12:47:20Z No. of bitstreams: 1 Geociências e Meio Ambiente - Dissertação Jorge Henrique Pedrobom.pdf: 1016315 bytes, checksum: 49d3b6ccf02643872d64774cb7259813 (MD5) / Approved for entry into archive by Felipe Augusto Arakaki (arakaki@reitoria.unesp.br) on 2016-07-28T12:04:47Z (GMT) No. of bitstreams: 1 pedrobom_jh_me_rcla.pdf: 1016315 bytes, checksum: 49d3b6ccf02643872d64774cb7259813 (MD5) / Made available in DSpace on 2016-07-28T12:04:47Z (GMT). No. of bitstreams: 1 pedrobom_jh_me_rcla.pdf: 1016315 bytes, checksum: 49d3b6ccf02643872d64774cb7259813 (MD5) Previous issue date: 2016-04-29 / Um dos fatores mais preocupantes na área de mineração de urânio é a drenagem ácida de mina (DAM), tal processo ocorre de maneira espontânea e descontrolada no complexo minério industrial de Poços de Caldas (CIPC). A DAM pode gerar espécies de urânio acima dos valores permitidos para lançamento em corpos hídricos. Durante o processo de DAM, o urânio, possivelmente, esta na forma de óxidos e hidróxidos de uranilo, ao atingir os corpos hídricos, sua forma pode mudar para espécies contendo grupos carbonato e sulfato. A concentração e labilidade dessas espécies são importantes para avaliação da biogeodisponibilidade do metal para o sistema aquático. A técnica de difusão em filmes finos por gradiente de concentração (DGT) tem sido utilizada para quantificação de metais na sua forma lábil e especiação de metais em diferentes tipos de amostra. Nesta pesquisa a técnica DGT foi utilizada em laboratório com diferentes fases ligantes para avaliar a aplicação em águas de DAM tratada e afluentes no entorno de mineração de urânio. A partir de imersões in situ, a técnica DGT foi utilizada juntamente com a técnica de extração em fase sólida (SPE) para avaliar a labilidade das espécies de urânio presente no sistema. Os resultados mostraram que grande parte do urânio presente nas amostras está na forma lábil. Por sua vez estes resultados se mostraram concordantes com a especiação via software MINTEQ. Por outro lado, os resultados obtidos pela SPE não foram concordantes com a técnica DGT, isso pode ser oriundo da saturação da fase ligante ou devido os diferentes tempos de residência dos íons nas diferentes técnicas. / One of the major concerns in uranium mining areas is the Acid Mine Drainage (AMD). This process occurs spontaneously and uncontrollably in Poços de Caldas Ore Industrial Complex (CIPC). DAM can generate levels of uranium species higher than the maximum allowed values for water bodies discharge. During the DMA process, uranium is possibly in the form of uranyl oxides and hydroxides and after reaching water bodies, it changes to species which contain carbonate and sulfate groups. The determination of concentration and lability of these species is important to evaluate the metal biogeoavailability to the water system. The Diffusion Gradients in Thin Films Technique (DGT) has been used for the quantification of labile metals and their speciation in several types of sample. In this research, DGT technique was used in lab with different binding layers to evaluate its suitability to DAM waters and uranium mining surrounding tributaries. Therefore, the developed method was performed in situ along the solid phase extraction technique (SPE) to assess the lability of uranium species present in the system. The results obtained by DGT technique showed that a large part of the uranium present in the samples is its labile form. Also, these results were consistent with speciation via the MINTEQ software. Moreover the results obtained by SPE were not consistent with those from DGT technique, probably because of the saturation of the binding phase or due to the different residence times of ions in different techniques.

Dada a importância estratégica das barragens no Brasil e à disputa de interesses, o descomissionamento dessas estruturas é um assunto inevitável a ser discutido. Um conjunto de casos de descomissionamento de outros países é apresentado e ilustra de maneira abrangente essa questão pouco discutida e ainda não legislada no Brasil. Uma metodologia para avaliação da necessidade de descomissionamento com base no potencial de risco oferecido foi proposta e aplicada aos barramentos constantes do Cadastro de barragens das bacias PCJ, no estado de São Paulo. Apesar de a metodologia não poder ser aplicada em sua total extensão devido à insuficiência de dados do cadastro, é possível perceber quando algumas barragens encontram-se descuidadas, sem nenhum tipo de monitoramento podendo ser elegíveis para escomissionamento. / Due to the importance of dams in Brazil and to different interests, dam decommissioning is an unavoidable issue to be discussed. Some examples of dam removal in some countries are presented to generally elucidate this subject that still hasnt been acknowledged, neither legislated in Brazil. A methodology for evaluation of decommissioning demanding, based on the potential risk offered by dams has been set up and tested over a few dams that are constituent of a data basis of dams of Piracicaba-Capivari-Jundiaí (PCJ) basins, in São Paulo state. Despite the fact that the methodology couldnt be used at its full length due to lack of field data, it has been realized when some dams of the data basis are most despised, recklessly maintained and are contestant for decommissioning.

M.Sc. / The goal of this study is to determine the relationship between landuse and runoff water quality. The chosen study area is the Roodeplaat Dam drainage basin. The basin contains three subbasins with varying characteristics. The western subbasin is that of the Hartbees Spruit with a largely urban character. The eastern subbasin containing the Edendal Spruit has mostly rural characteristics in terms of landuse. The central (and largest) sub-basin of the Pienaars River has a mixed (urban/rural) land usage. Specific aims of the study were the determination of the negative (or positive) influence of urban landuse on the quality of water that flows into the Roodeplaat Dam, and the determination of the influence of climate (more specifically precipitation) on this water quality. A review of different water quality components is provided with the emphasis on those used in the study. Each of the three subbasins are described in terms of landese to determine the possible influences on water quality. Water quality data obtained from the Department of Water Affairs (Pretoria) were calculated to fortnightly averages in order to obtain complete time series. Six inorganic water quality indicators (total dissolved solids, pH, magnesium, fluoor, sulphate and calcium carbonate) were chosen out of the initial sixteen obtained. The selection that was made was based on the results of a pre-analysis long term trend analysis (for a five year period) of the water quality indicators in each of the three sub-basins. Chosen data sets were compiled to fortnightly and seasonal averages to be used in the analysis phase. The seasons used were determined by combining precipitation and inflow contributions (to the Roodeplaat Dam) for a ten year period. Each of the six chosen water quality indicators were examined in terms of absolute data (fortnightly averages), seasonal averages and long term trends for the fifteen year study period. Time and spatial aspects were integrated to make the sinthesis of the study possible. Albeit some unique conclusions were made, the initial aims of the study could still be reached. It was determined that urban landuse has a more negative influence on the water quality of the Roodeplaat Dam drainage basin than rural landuse (in this case mostly small holdings). Apart from this it was shown that climate (in the form of precipitation) has an even bigger influence on water quality (pollution concentration levels) in the Roodeplaat Dam drainage basin.

Cette thèse étudie le chant khap de l’ethnie des Tai Dam du Laos à partir de la notion de modèle musical. Abordé au travers du concept de la pertinence, son principal objectif est la mise en lumière des compétences liées au chant, c’est-à-dire des connaissances abstraites nécessaires à l’interprétation et la catégorisation du chant. Fil rouge de ce travail, c’est au départ de la notion de modèle que sont construits les différents chapitres. Partant d’une considération d’ordre musical, sont mis au jour les mécanismes de transmission du chant, les rapports entre tons parlés et chantés, ainsi que les différents mécanismes de catégorisation musicale et identitaire. La thèse montre l’imbrication de chacun de ces aspects et la pertinence de la mobilisation de plusieurs disciplines dans la réalisation de cette recherche : musicologie, anthropologie et linguistique. C’est dans une perspective intégrant les points de vue étiques et émiques et par le développement d’une méthodologie adaptée aux particularités du sujet que sont discutés les différents axes de la recherche. / This research studies the singing named khap of Tai Dam ethnic group in Laos, through the notion of musical model. Its main objective, approached with the concept of relevance, is the highlight of the competences linked to the singing, that is to say the abstract knowledge needed for the interpretation and the categorisation of the singing. The principle of musical model is the common theme of this research, and is the starting point of every chapter. Starting from musical considerations, the PhD highlights the mechanisms of musical transmission, the relationships between spoken and musical tones, as well as the different mechanisms of musical categorisation and identity categorisation. This work shows the interweaving of every of those aspects and the relevance of using different disciplines: musicology, anthropology and linguistic. The different lines of this work are approached with a perspective mobilising etic and emic perspectives and by the development of a methodology adapted to the specificities of the topic.

M.Sc. (Zoology) / Suidwes-Afrika is. tn land van kontraste. Dit is tn dorre gebied waar water die paspoort is tot lewe. Die jaarlikse reenval is betrekIik laag (280mm, Dept. Waterwese. 1972) sodatdie natuurlike dreineringsisteme vir die grootste gedeelte van die jaar bree sandslote is. Tydens die kort reenseisoen verander dit egter in bruisende watermassas, wat afloop om uiteindelik in die see, moerasse .of die sand van die Kalahari te verdwyn. Die bou van groot opgaardamme soos die Hardap-, Naute- en Von Bachdam het hierdie watermassas vir mens en dier opgegaar. Die vraag ontstaan egter of water, wat vir mens, dier en op besproeiingslande beskikbaar gestel is, ten volle benut word…

M.Sc. (Zoology) / Please refer to full text to view abstract

This thesis deals with the influence of the Luhačovice dam on the surroundings, mainly on the price of recreational facilities. Firstly, the thesis addresses terminology, issues concerning dams and valuation methods suitable for these issues. Secondly, the thesis describes the current condition of the dam and its surroundings, the facilities situated in the surroundings and operation costs. The thesis presents a novel method of finding the average price of cottages in given area and comparing it with average prices of recreational facilities in other selected areas. The thesis concludes with an evaluation of the average prices and the economic and security influence of the dam on its surroundings.

Svensk Elitfotboll (SEF), Elitfotboll Dam (EFD) och Svensk Elithandboll AB (SEH AB) arbetar alla med elitverksamhet inom vardera idrott. De enskilda ligaorganisationerna innefattar ett antal medlemsföreningar med rätten till beslutsfattande. SEF har genom kommersialiseringen kunnat bygga sig en framgångsrik utveckling medan EFD respektive SEH AB har en bit kvar. De olika förutsättningarna för ligaorganisationerna har byggt skilda utvecklingsvägar för respektive ligaorganisation och medlemsföreningar, där kommersialiseringens kraft har vägt över på SEF. Undersökningens granskar hur medlemsföreningarna påverkas av ligaorganisationerna och vad för likheter och skillnader som finns mellan dem. En kvalitativ metod med en jämförande design appliceras på undersökningen, där insamlingen av empiri utgörs av semi-strukturerade intervjuer. Genom analysen av det insamlade materialet med koppling till teori kunde undersökning konstatera att respektive ligaorganisation har stora skillnader mellan medlemsföreningarna, både organisatoriskt och ekonomiskt. SEH AB:s uppbyggnad är av positiv karaktär utifrån samhällets syn på jämställdhet där SEF och EFD kan ta inspiration från.

Yes / The present study attempts to predict the reservoir sedimentation in 32 km region of the Tenryu River between the Hiraoka and Sakuma Dams in Japan. For numerical simulations of the reservoir sedimentation, the one-dimensional model of the Hydrologic Engineering Centre-River Analysis System (HEC-RAS) is used together with the inclusion of channel geometry, bed gradation curve, Exner-5 bed sorting mechanisms, fall velocity of the particle, and flow and sediment boundary conditions pertaining to modeling region. The modeling region of the Tenryu River is divided into 48 river stations with 47 reaches in the numerical simulations. The numerical model is calibrated using the available data for 48 years from 1957 to 2004. The formulae of sediment transport function, Manning’s roughness coefficient, computational increment and fall velocity have been identified for getting the best estimation of the Sakuma Dam reservoir sedimentation. Combination of obtained sensitive parameters and erodible limits of 2 m gave the best comparison with the measured bed profile. The computed results follow the trend of measured data with a small underestimation. Although Manning’s roughness coefficient has an effect on the sedimentation, no direct relation is found between the Manning’s roughness coefficient and reservoir sedimentation. It is found that the temperature of water has no effect on the reservoir sedimentation.