Thesis (Ph. D.)--West Virginia University, 2008. / Title from document title page. Document formatted into pages; contains x, 394 p. : map. Includes abstract. Includes bibliographical references (p. 381-394).

A viability study was undertaken on a farm Zandrivierspoort 210 JP, in the Pilanesberg Alkaline Complex to investigate the red syenite deposit. The red syenite deposit of interest is located in the south-western quadrant of the Pilanesberg. It is a potential source of nepheline, which is used as a flux in glass and ceramics industry. The study was aimed at establishing the demand for the material in South Africa and the market logistics related to its exploitation. Glass and ceramics manufacturers have different specifications as far as the quality and the product form is concerned. A market study conducted indicated that glass manufacturers require already beneficiated material with a low Fe content, depending on the kind of glass being manufactured. Ceramics manufactures also want material with low Fe content, but the material can be unbeneficiated as most of these factories already have facilities to remove Fe and other gangue. The common requirement is that material must be crushed and milled to a specific size. Red Syenite complies with the specifications of the ceramics manufacturer and did not comply directly with the specification of the glass manufacturer. The main reason for not non-compliance with glass specifications can be attributed to the fact that the material supplied was unbeneficiated. A major concern from the industry is the continuity of production from the deposit and an assurance of constant quality. It was also established that the availability of substitutes such as feldspar at a lower cost than nepheline results in an unwillingness of potential users to source nepheline despite its advantages. It is recommended that extensive geological studies be undertaken to confirm the resources and reserves of the entire nepheline-bearing deposits in the Pilanesberg. The mining of the deposit will be undertaken by employing a quarrying method, which will be followed by opencast to a depth of 50m. The Run-Of-Mine (ROM) will be crushed and milled to sizes specified by clients and the beneficiation process will follow. A financial investigation based on the known facts about the deposit established that capital, production rate, and selling price have the highest influence on the viability of the project. Transport and operating costs in this case showed a less significant influence on the viability of the project. / Dissertation (MSc (ESPM))--University of Pretoria, 2007. / Geology / unrestricted

The main goal of this study was to develop a methodology for the production of Bismuth Titanate ceramics in the phase Bi4Ti3O12, based on sol-gel route and using polyvinyl alcohol (PVA) as polymerizing agent. Bi4Ti3O12 is a ferroelectric material with great technological appeal due to its potential application in capacitors and memory devices. Moreover, the sol-gel route with PVA, besides enabling particle size control and low contamination during the synthesis, has the advantage of using less expensive reagents than those used in conventional route. The results indicated that ceramic bodies with single phase and relative density of 70% can be obtained after calcination at 800º C and sintering at 1000º C for 2h. These ceramic bodies had microstructure with sub-micrometric rounded grains that assume platelet morphology when reach micrometric dimensions. The impedance diagram of sintered ceramics presented two characteristic semicircles, thermally activated conductivity and dielectric permittivity characterized by a dispersion at low frequencies due to charge carriers movement in the material. The activation energy for the conductive processes was determined by the low frequency dependence of electric conductivity and modulus on the temperature. In both cases, it was observed an Arrhenius-type behavior with energies around 0.7 eV. Similar values were obtained for the conductive processes in intra-grain region, at high frequencies. In this case, the energies were obtained only by analyzing the electrical module. The results obtained point out to the success of the technique to obtain material with good crystallographic quality through a route that is simplified and cost reduced. In the specific case of the material being studied in this work, additional efforts will be required to achieve ceramics with relative density higher than 90%. / O principal objetivo deste trabalho foi o desenvolvimento de uma metodologia para a produção de cerâmicas de Titanado de Bismuto na fase Bi4Ti3O12, baseada na rota de sol-gel e utilizando polivinil álcool (PVA) como agente polimerizante. O Bi4Ti3O12 é um material ferroelétrico com grande apelo tecnológico devido ao seu potencial de aplicação em capacitores e elementos de memória. Por outro lado, a rota de sol-gel com PVA, além de possibilitar o controle de tamanhos de partícula e reduzir riscos de contaminação durante a síntese, apresenta a vantagem de utilizar reagentes de custo menor do que os que são utilizados na rota convencional. Os resultados obtidos indicaram que corpos cerâmicos com fase cristalina única e densidade relativa de 70 % podem ser obtidos após calcinação em 800º C e sinterização a 1000º C por 2h. Estes corpos cerâmicos apresentaram microestrutura com grãos sub-micrométricos arredondados, evoluindo para grãos em forma de plaquetas ao atingir dimensões micrométricas. O diagrama de impedância das cerâmicas sinterizadas apresentou dois semicírculos característicos, condutividade termicamente ativada e permissividade marcada por dispersão a baixas frequências devido ao movimento de portadores de carga no material. A energia de ativação para os processos condutivos foi determinada a baixas frequências através da dependência da condutividade e do módulo elétrico com a temperatura. Em ambos os casos, observou-se um comportamento do tipo Arrhenius, com energias em torno de 0.7 eV. Valores semelhantes foram obtidas para os processos condutivos na região intra-grão, em altas frequências. Neste caso, as energias foram obtidas somente pela análise do módulo elétrico. O conjunto de resultados obtidos aponta para o sucesso da técnica para obter materiais de boa qualidade cristalográfica através de uma metologia simplificada e com custo reduzido. No caso específico do material em estudo no presente trabalho, esforços adicionais serão necessários para se obter cerâmicas com densidade relativa superior a 90 %.

This research aims to analyze the spatial distribution of red ceramic industrial activity in the local towns of Areia Branca, Campo do Brito and Itabaiana (Sergipe), focusing on labor relations, the role of the State and the sustainability discourse that feeds the development proposals. The expansion of the housing and the civil construction market has driven the establishment of new potteries that demand the hiring of labor, subjected to high workload and low wages. The answers given by the State, as a way of inhibit the exploitation of plant and mineral resources for the ceramic production, based in a sustainability discourse, reveal its class character, to the extent that its performance toward the environmental crimes is weak and favors the ceramic production to meet the civil construction market demands. In order to develop this study, the research was based on an analysis of the reality from the standpoint of historical and dialectical materialism that led the analytical procedures, such as the theoretical basis and the field research, to compare the interpretations of the interviewees and establish a relation between theory and empiricism. Therefore, it is recognized that the elements involved in this activity are fundamental to give their responses to the current situation of structural crisis of capitalism. From a critical analysis it was possible to reveal the contradictions that pervade those who are involved in the ceramic production as well introduced into the conflict between capital versus work and nature, enabling an understanding of reality as a product of multiple determinations. / Esta pesquisa propõe analisar a espacialização da atividade industrial de cerâmica vermelha nos municípios de Areia Branca, Campo do Brito e Itabaiana (Sergipe), privilegiando as relações de trabalho, a atuação do Estado e o discurso da sustentabilidade que alimenta as propostas de desenvolvimento. A expansão do mercado imobiliário e da construção civil tem impulsionado a implantação de novas indústrias de produção de cerâmicas que demanda a contratação de mão-de-obra, submetida à elevada carga horária e salários baixos. As respostas dadas pelo Estado, como disciplinador da exploração dos recursos vegetais e minerais para a produção de cerâmica, ancoradas no discurso da sustentabilidade revelam o caráter de classe que o Estado apresenta, na medida em que sua atuação é débil quanto aos crimes ambientais e favorece a produção da cerâmica para atender o mercado da construção civil. Para desenvolver o estudo, a pesquisa foi fundamentada na análise da realidade sob o enfoque do materialismo histórico e dialético que conduziu os procedimentos analíticos, como fundamentação teórica e a pesquisa de campo para confrontar as interpretações dos sujeitos entrevistados e estabelecer a relação teoria-empiria. Para tanto, reconhece-se que os elementos envolvidos nessa atividade são fundamentais no sentido de darem respostas ao quadro atual de crise estrutural do capitalismo. A partir de uma análise crítica foi possível desvelar as contradições que perpassam os envolvidos na produção ceramista que estão inseridos no conflito entre capital x trabalho-natureza, possibilitando uma compreensão da realidade concreta como produto de múltiplas determinações.

This research aims to analyze the spatial distribution of red ceramic industrial activity in the local towns of Areia Branca, Campo do Brito and Itabaiana (Sergipe), focusing on labor relations, the role of the State and the sustainability discourse that feeds the development proposals. The expansion of the housing and the civil construction market has driven the establishment of new potteries that demand the hiring of labor, subjected to high workload and low wages. The answers given by the State, as a way of inhibit the exploitation of plant and mineral resources for the ceramic production, based in a sustainability discourse, reveal its class character, to the extent that its performance toward the environmental crimes is weak and favors the ceramic production to meet the civil construction market demands. In order to develop this study, the research was based on an analysis of the reality from the standpoint of historical and dialectical materialism that led the analytical procedures, such as the theoretical basis and the field research, to compare the interpretations of the interviewees and establish a relation between theory and empiricism. Therefore, it is recognized that the elements involved in this activity are fundamental to give their responses to the current situation of structural crisis of capitalism. From a critical analysis it was possible to reveal the contradictions that pervade those who are involved in the ceramic production as well introduced into the conflict between capital versus work and nature, enabling an understanding of reality as a product of multiple determinations. / Esta pesquisa propõe analisar a espacialização da atividade industrial de cerâmica vermelha nos municípios de Areia Branca, Campo do Brito e Itabaiana (Sergipe), privilegiando as relações de trabalho, a atuação do Estado e o discurso da sustentabilidade que alimenta as propostas de desenvolvimento. A expansão do mercado imobiliário e da construção civil tem impulsionado a implantação de novas indústrias de produção de cerâmicas que demanda a contratação de mão-de-obra, submetida à elevada carga horária e salários baixos. As respostas dadas pelo Estado, como disciplinador da exploração dos recursos vegetais e minerais para a produção de cerâmica, ancoradas no discurso da sustentabilidade revelam o caráter de classe que o Estado apresenta, na medida em que sua atuação é débil quanto aos crimes ambientais e favorece a produção da cerâmica para atender o mercado da construção civil. Para desenvolver o estudo, a pesquisa foi fundamentada na análise da realidade sob o enfoque do materialismo histórico e dialético que conduziu os procedimentos analíticos, como fundamentação teórica e a pesquisa de campo para confrontar as interpretações dos sujeitos entrevistados e estabelecer a relação teoria-empiria. Para tanto, reconhece-se que os elementos envolvidos nessa atividade são fundamentais no sentido de darem respostas ao quadro atual de crise estrutural do capitalismo. A partir de uma análise crítica foi possível desvelar as contradições que perpassam os envolvidos na produção ceramista que estão inseridos no conflito entre capital x trabalho-natureza, possibilitando uma compreensão da realidade concreta como produto de múltiplas determinações.

This thesis aims to evaluate the company XY s.r.o. to the date of 31 December 2014 and to assess its financial health and perspectives. The theoretical part is devoted to a brief description of pledge of business share from the perspective of the bank with its advantages and risks. The practical part or the actual valuation is divided into classic chapters. The introduction presents the valuated company with a consistent description of their products. Another chapter is devoted to strategic analysis, which evaluates future outlook of the company. In the financial analysis, the individual balance sheet items are decribed and their development in time is monitored. Individual valuation is performed using the capitalized earnings method and is additionally supported by the incomplete substantial method and market multipliers.

The people making ceramics were considered as "artisans" (gongjiang) in traditional China. Classifying ceramics as an "art" (meishu) and potters as "artists", was a new development in the twentieth century. This thesis examines this process by comparing the experience of artisans from Jingdezhen, Jiangxi province, in which the imperial kilns (yuyao) were located, and from Shiwan, Guangdong province, where only civilian kilns (minyao) were found. / This thesis argues their different historical background led to the differences in their different experience. The reputation of Jingdezhen's world famous "imperial kilns" lasted into the twentieth century, and so, as Jingdezhen was subject to industrial development and technological upgrading, Jingdezhen's craftsmen came from the new technical schools which were founded to revive the ceramic industry. In Shiwan, by contrast, apprenticeship to reputable craftsmen continued to serve as artistic credential, and was made use of by patrons, commentators and publicists in promoting Shiwan's artistic tradition. / 黎麗明. / Adviser: David Faure. / Source: Dissertation Abstracts International, Volume: 73-03, Section: A, page: . / Thesis (Ph.D.)--Chinese University of Hong Kong, 2010. / Includes bibliographical references (p. 178-192) / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [201-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts in Chinese and English. / Li Liming.