Thesis (M.S.)--West Virginia University, 2009. / Title from document title page. Document formatted into pages; contains vii, 40 p. : col. ill. Includes abstract. Includes bibliographical references (p. 39-40).

Thesis (M.S.)--West Virginia University, 2005. / Title from document title page. Document formatted into pages; contains x, 157 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 128-132).

Thesis (M.A.)--University of Wisconsin--Madison, 1971. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Zugl.: Berlin, Humboldt-Univ., Diss., 2007

Thesis (Ph. D.)--Indiana University, 2003. / Includes bibliographical references (leaves 418-425).

No description available.

学位授与大学：京都大学 ; 取得学位: 博士(工学) ; 学位授与年月日: 2007-09-25 ; 学位の種類: 新制・課程博士 ; 学位記番号: 工博第2845号 ; 請求記号: 新制/工/1419 ; 整理番号: 25530 / Multiphase flows are governed by three-dimensional Navier Stokes equations for each involved phase. Therefore, solution of these equations for given boundary and initial conditions, in principle, would determine the flow field in time and space. Generally, boundaries between involved phases are not known a priory, but are part of the, solution; or in the case of flows in a porous medium, these boundaries have too complicated geometry to be resolved mathematically. This resulted into development of simplified models, where the level of simplifications determines the model applicability. However, in order to represent simulated flows accurately, the model should include as much as possible relevant mechanisms and fluid properties. In this study, a numerical model is developed based on finite volume method, in which the volume averaged governing equations are solved. In contrary to the simplified models. a full momentum equations for each involved phase is considered. Such model is utilized in the study to investigate commonly adopted simplifications, and their effects on the model applicability. Namely, for the flows in porous media, the effects of acceleration terms in momentum equations are investigated; first for the saturated groundwater flow, and then; for the air/water flow during air injection into initially saturated soil. It is revealed that in the case of saturated flow in homogeneous, incompressible, low permeable soils, the pressure adapts the new imposed boundary conditions instantaneously, while the velocities reach the quasi-steady conditions extremely fast. In the case of heterogeneous soil, pressure and velocity field have transient nature, but quickly reach the quasi-steady conditions. Only during this onset of flow, the inertia terms play a role. In the case of air/water flow during air sparging, it is revealed that acceleration becomes important for porous medium with average grain size larger than 2 rum. This implies that simulations of such flow in coarse sands and gravels should include acceleration. It is explicitly shown that phenomena of flow pulsation, manifesting as steady pulsation at the constant air-injection flow rate, can be modeled only by inclusion of acceleration terms in governing equations. Theoretical analysis; conducted by application of one-dimensional stability analysis, revealed that inertial effects promote the instability, while the capillary forces oppose it. Ratio of these forces determines the onset of instability. It is showed that for materials with average grain size smaller than 2 mm, instability can not be expected. In order to apply the model for simulation of contaminant removal during air sparging, the contaminant transport model is supplied. Mechanistic numerical models inherently assume that involved phases are completely mixed, and by now reported models commonly assume the local equilibrium of contaminant between the air and water phase. As reported by many investigators, this leads toward an overestimated contaminant removal. Therefore, in this model a channel air flow pattern is considered, where transfer of contaminant between the water and the air phase is modeled according to two film theory. Diffusive process of contaminant transport toward the air phase is modeled by a first order kinetic process between two water compartments: a immobile compartment in contact with the air phase and mobile compartment which has no contact with the air phase. Application of the developed model to reported two-dimensional experiment, showed a good agreement between simulated and measured transient change of dissolved contaminant in the water. This study also showed that single numerical model, through the minor refinements, can be applied to wide variety of hydraulic engineering problems. By inclusion of gas compressibility, and mass exchange between the gas and the water phase in continuity equations, with adapting the drag term in momentum equations, a bubble phone model is proposed which can be utilized for simulation of lake amelioration by gas (air or pure oxygen) injection. Model is qualitatively and quantitatively validated by comparison with reported experiments from the literature. Hypothetical simulation of pure oxygen injection into 50 in deep lake showed that, due to ambient water entrainment into the gas plume, a significant spreading of dissolved oxygen can not be expected. Therefore, a optional gas injection strategy should be considered. Developed model can be utilized in order to propose an optimal gas injection design. Finally.. the same numerical model is proposed for simulation of flow in complex flow domains, consisting of bulk water and flow in porous medium with free surface boundary. Model is formulated in generalized curvilinear coordinates, in order to provide adequate representation of irregular boundaries. In contrast to earlier proposed boundary conditions at the two domain interface, in this model a continuity of velocities and stresses is assumed; for both regions a single set of governing equations is solved. Model application is illustrated by simulation of embankment overflow and its effect on effective stresses in the porous medium. It is showed that coupled, bulk water and groundwater flow, significantly influence the slope failure potential, here quantified by the Coulomb failure coefficient for non cohesive soils. / Kyoto University (京都大学) / 0048 / 新制・課程博士 / 博士(工学) / 甲第13374号 / 工博第2845号 / 新制||工||1419(附属図書館) / 25530 / UT51-2007-Q775 / 京都大学大学院工学研究科都市社会工学専攻 / (主査)教授 細田 尚, 准教授 牛島 省, 准教授 後藤 仁志 / 学位規則第4条第1項該当

Made available in DSpace on 2014-06-11T19:32:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-03-23Bitstream added on 2014-06-13T21:04:18Z : No. of bitstreams: 1 barros_pm_dr_assis.pdf: 4942702 bytes, checksum: e5c4ff92f72edcc875ced5c77cfbd78e (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A presente pesquisa tem como objetivo a análise do movimento contracultural brasileiro no período de 1969 a 1973, através de algumas publicações da chamada imprensa alternativa, editadas no Rio de Janeiro por Luiz Carlos Maciel. As fontes elencadas para esta pesquisa são: a coluna Underground (1969-1971), veiculada no semanário O Pasquim (1969-1991), o jornal Flor do Mal (1971), bem como a versão brasileira da revista Rolling Stone (1972-1973), entre centenas de impressos alternativos que emergiram na época. Através do estudo dessas fontes, mapeou-se e caracterizou-se a contracultura no Brasil, seus caminhos e descaminhos, em um período de recrudescimento do regime militar, que cerceava qualquer manifestação de oposição ao sistema vigente. Ironicamente, essa fase consistiu um período fértil de proliferação dos alternativos. Estes, através da arte e do humor, davam respostas desconcertantes àquele momento vivido, originando a formação do discurso da chamada nova consciência nos trópicos. Grande parte dessas produções alternativas, especificamente as de cunho underground, permaneceu no anonimato, sendo divulgada apenas em círculos restritos. Contudo, mesmo sendo um trabalho consumido por minorias vindas, sobretudo, da classe média, estavam ligadas ao surgimento de uma nova consciência de juventude, de caráter internacional, e que resultou na utopia hippie vivida em vários pontos do planeta. Embora não tivessem uma definição ideológica, em termos de uma razão marxista, voltavam-se para uma situação contracultural, em relação aos textos divulgados pela imprensa convencional... / The present study analyzes the countercultural movement in Brazil from 1969 to 1973, through investigation of publications by the alternative press, edited in Rio de Janeiro by Luiz Carlos Ferreira Maciel. The sources listed for this research including the following: the column named Underground (1969-1971), published in the weekly newspaper O Pasquim, the newspaper Flor do Mal (1971); and the Brazilian version of Rolling Stone magazine (1972-1973); as well as hundreds of publications that appeared during that period. Through the study of these sources, Brazilian counterculture was mapped and characterized, in a period when the military regime was increasing its power, cornering any oppositional manifestation to the ruling system. Ironically, this situation consisted of a very fertile period for the proliferation of the alternative press. By means of art and humor this press was giving surprising answers to that living moment, creating the discursive formation of the so-called new tropical consciousness. A great part of these alternative productions, specifically the underground ones, remained anonymous, being divulged only in restricted circles. However, even though it was a work consumed mainly by minorities coming from the middle class, these practices were linked to the appearance of a new youth consciousness; international in its feature, resulting in the hippie utopia that lived in many places around the planet. Although lacking a defined ideology, in terms of having a Marxist reason, they turned to the countercultural situation, in relation to the texts published by the conventional press... (Complete abstract, click electronic access below)

Master of Science / Department of Civil Engineering / Stacey E. Kulesza / Thousands of metallic drainage structures have been installed by the Kansas Department of Transportation (KDOT) to facilitate proper drainage of highway systems across the state. Several studies were conducted over the past 30 years by KDOT to determine the durability of different corrugated metal pipe (CMP) materials and estimate their performance against the deterioration that occurs due to the electrochemical process of corrosion. These past studies have influenced KDOT policy regarding pipe material, but a method to quickly determine the rate of deterioration, and accurately predict a service life, is still not well defined. With the last comprehensive study performed in 1990 by KDOT, there is now a need to perform a field evaluation to determine the performance of CMPs in Kansas. This research conducted a survey of observed CMP conditions for 80 sites across KDOT districts one and four using a quantitative observational rating system. The goal of the survey was to determine the performance of CMPs in the field. The findings of this study indicate that a 1975 change in KDOT pipe policy has increased the rapid deterioration of CMPs. An additional study was conducted to determine if accurate service life predictions could be made based on chemical and biological characteristics of soil taken near the CMP invert. A method to test the leachate water exposed to the soil sample was created. Laboratory results of four field samples indicated that the rate at which the invert deteriorated corresponded to the total amount of chloride anion mobilized in the leachate over a 72-hour period, along with the standard deviation of pH measured throughout the test. This contradicts most field corrosion tests that only measure field pH and resistivity. The developed method of measuring soil sample leachate may provide a more accurate estimate of the performance of CMP in the sample location.

Orientador: Milton Carlos Costa / Banca: Célia Reis Camargo / Banca: José Carlos Barreiro / Banca: Alexandre Felipe Fiúza / Banca: Gabriel Giannattasio / Resumo: A presente pesquisa tem como objetivo a análise do movimento contracultural brasileiro no período de 1969 a 1973, através de algumas publicações da chamada imprensa alternativa, editadas no Rio de Janeiro por Luiz Carlos Maciel. As fontes elencadas para esta pesquisa são: a coluna Underground (1969-1971), veiculada no semanário O Pasquim (1969-1991), o jornal Flor do Mal (1971), bem como a versão brasileira da revista Rolling Stone (1972-1973), entre centenas de impressos alternativos que emergiram na época. Através do estudo dessas fontes, mapeou-se e caracterizou-se a contracultura no Brasil, seus caminhos e descaminhos, em um período de recrudescimento do regime militar, que cerceava qualquer manifestação de oposição ao sistema vigente. Ironicamente, essa fase consistiu um período fértil de proliferação dos alternativos. Estes, através da arte e do humor, davam respostas desconcertantes àquele momento vivido, originando a formação do discurso da chamada "nova consciência nos trópicos". Grande parte dessas produções alternativas, especificamente as de cunho underground, permaneceu no anonimato, sendo divulgada apenas em círculos restritos. Contudo, mesmo sendo um trabalho consumido por minorias vindas, sobretudo, da classe média, estavam ligadas ao surgimento de uma nova consciência de juventude, de caráter internacional, e que resultou na utopia hippie vivida em vários pontos do planeta. Embora não tivessem uma definição ideológica, em termos de uma razão marxista, voltavam-se para uma situação contracultural, em relação aos textos divulgados pela imprensa convencional... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The present study analyzes the countercultural movement in Brazil from 1969 to 1973, through investigation of publications by the alternative press, edited in Rio de Janeiro by Luiz Carlos Ferreira Maciel. The sources listed for this research including the following: the column named Underground (1969-1971), published in the weekly newspaper O Pasquim, the newspaper Flor do Mal (1971); and the Brazilian version of Rolling Stone magazine (1972-1973); as well as hundreds of publications that appeared during that period. Through the study of these sources, Brazilian counterculture was mapped and characterized, in a period when the military regime was increasing its power, cornering any oppositional manifestation to the ruling system. Ironically, this situation consisted of a very fertile period for the proliferation of the alternative press. By means of art and humor this press was giving surprising answers to that living moment, creating the discursive formation of the so-called "new tropical consciousness". A great part of these alternative productions, specifically the underground ones, remained anonymous, being divulged only in restricted circles. However, even though it was a work consumed mainly by minorities coming from the middle class, these practices were linked to the appearance of a new youth consciousness; international in its feature, resulting in the hippie utopia that lived in many places around the planet. Although lacking a defined ideology, in terms of having a Marxist reason, they turned to the countercultural situation, in relation to the texts published by the conventional press... (Complete abstract, click electronic access below) / Doutor