Tesis sobre el tema "Liquefaction"
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Butterfield, Katherine J. "Seismic Liquefaction Trigger Mechanisms". Thesis, University of Canterbury. Civil Engineering, 2004. http://hdl.handle.net/10092/1179.
Texto completoBaloyi, Hope. "Algae liquefaction / Hope Baloyi". Thesis, North-West University, 2012. http://hdl.handle.net/10394/8153.
Texto completoThesis (MSc Engineering Sciences (Chemical Engineering))--North-West University, Potchefstroom Campus, 2012.
Arndt, Alex Michael. "Performance-Based Liquefaction Triggering Analyses with Two Liquefaction Models Using the Cone Penetration Test". BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6945.
Texto completoKabbani, Dania. "Ultrasound-assisted liquefaction of honey". Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/144664.
Texto completoBroomfield, Derek Chad. "Liquefaction potential of paste backfill". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0019/MQ52879.pdf.
Texto completoNg, Dixon C. "Wood liquefaction with hydriodic acid". Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65993.
Texto completoBhattacharya, S. "Pile instability during earthquake liquefaction". Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.596628.
Texto completoBarraza, Burgos Juan M. "Liquefaction of beneficiated coal fractions". Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294702.
Texto completoTanaka, Kōtarō. "Safety of foundations against liquefaction". Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36526.
Texto completoJu, Lei. "Assessment of ship cargo liquefaction". Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27907.
Texto completoGibbens, Clem Alexander Molloy. "The Use of the Multi-channel Analysis of Surface Waves (MASW) Method as an Initial Estimator of Liquefaction Susceptibility in Greymouth, New Zealand". Thesis, University of Canterbury. Geological Sciences, 2014. http://hdl.handle.net/10092/10244.
Texto completoCordon, Michael, LI Zuun, Tyler List y Aaron Zhang. "The Growth and Production of Crude Oil from Algae Using Hydrothermal Liquefaction and Catalytic Hydrothermal Liquefaction". Thesis, The University of Arizona, 2013. http://hdl.handle.net/10150/297546.
Texto completoUlmer, Kristin Jane. "Development of a Simplified Performance-Based Procedure for Assessment of Liquefaction Triggering Using Liquefaction Loading Maps". BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5600.
Texto completoChung, Jae-Won. "Development of a geographic information system-based virtual geotechnical database and assessment of liquefaction potential for the St. Louis Metropolitan area". Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/Chung_09007dcc80483011.pdf.
Texto completoVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed March 24, 2008) Includes bibliographical references (p. 145-155).
Mitrani, Helen. "Liquefaction remediation techniques for existing buildings". Thesis, University of Cambridge, 2006. https://www.repository.cam.ac.uk/handle/1810/252017.
Texto completoAdalier, Korhan. "Mitigation of earthquake induced liquefaction hazards". online access from Digital Dissertation Consortium access full-text, 1996. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?9635658.
Texto completoBradshaw, Aaron S. "Liquefaction potential of non-plastic silts /". View online ; access limited to URI, 2006. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3248224.
Texto completoMayfield, Roy T. "The return period of soil liquefaction /". Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/10209.
Texto completoLee, Wayne Y. "Numerical modeling of blast-induced liquefaction /". Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1431.pdf.
Texto completoMei, Huan. "Market risk analysis of coal liquefaction". Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5502.
Texto completoTitle from document title page. Document formatted into pages; contains vii, 66 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 55-57).
Wang, Lijie 1963. "Low severity electrochemical liquefaction of wood". Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=37693.
Texto completoRemoval of oxygen from polymeric wood components is accomplished with oxidation of I- to I2. The second stage tested a novel concept for closing the HI → I2 → HI loop, an electrochemical liquefaction reactor (ECLR) with liquefaction in the cathode cell where I2 is simultaneously reduced back to I- . Electrolysis of water at the anode generates O2 and the H+ required at the platinum cathode for HI regeneration. Without wood liquefaction, current efficiency for I2 reduction is 90--100% and I2 concentration can be maintained at about 0.1 M, which is about 10% of that without I2 reduction.
Preliminary ECLR tests in batch and batchwise-continuous modes demonstrated simultaneous wood liquefaction and electrochemical reduction of I2 in the presence of the viscous wood oil. Also the iodine content of the crude wood oil is thereby reduced by about 60%, where this limit is imposed by the strong physical association between I2 and various functional groups in the product. Generation of H2, the competitive reaction, can be avoided.
ECLR characteristics were determined from a continuous run in a sealed reactor at a steady aqueous phase concentration of 55 wt% HI with a cathode current density of 0.81 A/cm2 at a cell voltage of 6 V. Carbon base yields were 84.2% crude wood oil product, 4.9% methyl iodide from the lignin methoxy groups and no production of the char-type residue common to other biomass liquefaction processes. Of the I2 produced, 93% would be reduced to HI, the other 7% being I2 associated physically with the product. Of the H+ generated at the anode, about half is used for HI regeneration and half for electrochemical liquefaction reactions as reflected by the exceptionally high levels of hydrogen retention and oxygen removal of the wood oil relative to the wood, above 85% in both cases.
Promputthangkoon, Panu. "Liquefaction of Sand-Tyre Chip Mixtures". Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.515469.
Texto completoCloke, M. "Trace element concentrations during coal liquefaction". Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378771.
Texto completoSoile, Olutola O. "The thermochemical liquefaction of Kraft lignin". Thesis, University of Manchester, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326109.
Texto completoGUILLEN, JORGE LUIS CARDENAS. "ELASTO-PLASTICITY MODELLING OF SOIL LIQUEFACTION". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=25812@1.
Texto completoCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Mudanças das propriedades dos solos devido à ação de carregamentos dinâmicos são responsáveis por danos significativos em geo-estruturas, tais como: barragens, estruturas de concentração, fundações, taludes, etc. A ocorrência do fenômeno da liquefação, em materiais suscetíveis como areias fofas saturadas, representa um tipo de resposta desastrosa de solos. O termo liquefação tem sido empregado para descrever uma variedade de fenômenos no qual tem em comum o desenvolvimento de altas poropressões em materiais saturados sem coesão devido a carregamentos monotônicos , transientes ou ciclios. A previsão da liquefação depende de uma adequada análise do comportamento não-drenado do material, em termos do incremento de poropressões e da perda da rigidez da mistura sólido-fluido, durante e após o período de movimento. O estabelecimento das equações governantes é essencial para elaboração de um modelo matemático realista para descrever o comportamento físico deste fenômeno. As equações a srem consideradas são: equação de movimento da fase sólida, a equação do movimento da mistura sólido-fluido , a equação de continuidade da fase fluida, as equações de acoplamento das fases e as equações constitutivas desses materiais. Nesta tese a resposta dinâmica do solo foi investigada numericamente mediante a técnica dos elementos finitos. A discretização espacial das equações governantes foi feita através de método de Galerkin e a discretização temporal pelo método de Newmark Generalizado. Um modelo constitutivo elasto-plástico foi considerado para descrever o comportamento mecânico da fase sólida, desenvolvido a partir de conceitos da generealização da teoria da plasticidade, que apresenta algumas vantagens em relação aos outros modelos baseados na teoria da plasticidade clássica. A implementação computacional foi escrito em fortran 90. Exemplos numéricos analisados nesta tese comprovam tanto a eficiência do modelo constitutivo na predição do comportamento do solo sobre liquefação como a confiabilidade do programa computacional elaborado nesta pesquisa, em termos da rapidez de processamento e da boa precisão dos resultados, quando comparados com soluções analíticas e outros valores numéricos obtidos por vários autores e diferentes modelos constitutivos.
Changes in soil properties due to the action of dynamic loads are responsible for significant damage of geo-structures such as dams, retaining structures,building foundations, slopes, etc. The occurrence of liquefaction phenomena in susceptible materials, such as loose saturated, represents a type of disastrous response of soil, the term liquefaction has been used to refer to a group of phenomena wich have in common the development of high pore pressures in saturated cohesionless mterial due to monotonic, transient, or cyclic loads. The prediction of soil liquefaction depends of an adequate analysis of the behavior of undrained materials, in terms of increase of pore water pressure and weakening of the solid-fluid mixture, during and after the periodic motion. The establishment of the governing equations is essential to provide a realistic mathematical model to describe the physical behavior of this phenomenon. The system of equations to be considered are: the equilibrium equation of the solid phase, the equilibrium equation of the solid-fluid mixture, the conservation mass of the fluid phase, the coupling equation of phases, and the conservation equations of materials. In this thesis the soil dynamic response was numerically investigated by the finite element method. To obtain the spatial discretization in time was the Generalized Newmark method. An elastic-plastic constitutive model was used to describe the mechanical behavior of the solid phase. This model was developed in the framework of the generalized theory of plasticity, wich has some advantages when compared with other models based on the classical plasticity theory. The computacional implementation was written in fortran 90. Numerical examples considered in this thesis demonstrate the efficiency of the constitutive model to simulated the predicted behavior of soil under liquefaction as well as the reliability of the software developed in this research, in terms of computational effort and good accuracy of the results, when compared with some analytical solutions and other numerical values obtained by various authors and different constitutive models.
Hashash, Youssef M. A. "Liquefaction probability mapping in greater Boston". Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/14559.
Texto completoLiao, Samson Sim Cheng. "Statistical modelling of earthquake-induced liquefaction". Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/14976.
Texto completoMICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING
Includes bibliographies.
by Samson Sim Cheng Liao.
Ph.D.
Laureano-Perez, Lizbeth. "Carbon products from coal liquefaction fractions". Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1618.
Texto completoTitle from document title page. Document formatted into pages; contains xvi, 182 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 98-100).
Lee, Wayne Yeung. "Numerical Modeling of Blast-Induced Liquefaction". BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/524.
Texto completoTaghipour, Alireza. "Fractional distillation of hydrothermal liquefaction Biocrude". Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/213838/1/Alireza_Taghipour_Thesis.pdf.
Texto completoAndersen, Paul Joseph Walsh. "Performance of a full-scale Rammed Aggregate Pier group in silty sand based on blast-induced liquefaction testing in Emilia-Romagna, Italy". BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/8530.
Texto completoELHUSSIEN, HUSSIEN Eldod. "NON- CATALYTIC TRANSFER HYDROGENATION IN SUPERCRITICAL CO2 FOR COAL LIQUEFACTION". OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1409.
Texto completoStrand, Spencer R. "Liquefaction Mitigation Using Vertical Composite Drains and Liquefaction Induced Downdrag on Piles: Implications for Deep Foundation Design". Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2330.pdf.
Texto completoWright, Alexander David. "Comparison of Performance-Based Liquefaction Initiation Analyses Between Multiple Probabilistic Liquefaction Models Using the Standard Penetration Test". BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3710.
Texto completoLinton, Nicholas James. "Gravel Liquefaction Assessment with the Dynamic Penetration Test at Non-Liquefaction Sites in Valdez, Alaska and L'Aquila, Italy". BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/8963.
Texto completoError, Braden Michael. "Development of a Simplified Performance-Based Procedure for the Assessment of Liquefaction-Induced Settlements Using Liquefaction Loading Maps". BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/7210.
Texto completoStruckmeier, Vera. "A computational model for seismically induced liquefaction". Braunschweig Mechanik-Zentrum der Techn. Univ, 2007. http://d-nb.info/997386584/34.
Texto completoLuna, Ronaldo. "Liquefaction evaluation using a spatial analysis system". Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/19413.
Texto completoWang, Rui. "Mechanism of catalysed solvent-mediated coal liquefaction". Thesis, Loughborough University, 1993. https://dspace.lboro.ac.uk/2134/10810.
Texto completoMcQueen, Paul. "Catalysis deactivation in staged direct coal liquefaction". Thesis, Heriot-Watt University, 1996. http://hdl.handle.net/10399/746.
Texto completoStaats, Wayne Lawrence. "Analysis of a supercritical hydrogen liquefaction cycle". Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45208.
Texto completoThesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.
In this work, a supercritical hydrogen liquefaction cycle is proposed and analyzed numerically. If hydrogen is to be used as an energy carrier, the efficiency of liquefaction will become increasingly important. By examining some difficulties of commonly used industrial liquefaction cycles, several changes were suggested and a readily scalable, supercritical, helium-cooled hydrogen liquefaction cycle was proposed. A novel overlap in flow paths of the two coldest stages allowed the heat exchanger losses to be minimized and the use of a single-phase liquid expander eliminated the pressure reduction losses associated with a Joule-Thomson valve. A simulation program was written in MATLAB to investigate the effects of altering component efficiencies and various system parameters on the cycle efficiency. In addition to performing the overall cycle simulations, several of the system components were studied in greater detail. First, the required volume of the ortho-para catalyst beds was estimated based on published experimental data. Next, the improvement in cycle efficiency due to the use of a single-phase liquid expander to reduce the pressure of the hydrogen stream was estimated. Finally, a heat exchanger simulation program was developed to verify the feasibility and to estimate the approximate size of the heat exchangers in the cycle simulation. For a large, 50-ton-per-day plant with reasonable estimates of achievable component efficiencies, the proposed cycle offered a modest improvement in efficiency over the current state of the art. In comparison to the 30-40% Second Law efficiencies of today's most advanced industrial plants, efficiencies of 39-44% were predicted for the proposed cycle, depending on the heat exchange area employed.
by Wayne Lawrence Staats, Jr.
S.M.
Daftari, Abbas. "New approach in prediction of soil liquefaction". Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2015. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-192304.
Texto completoXu, Haixia. "Wave-induced liquefaction processes in marine sediments". Thesis, University of Dundee, 2012. https://discovery.dundee.ac.uk/en/studentTheses/e9c70159-a416-49d7-b055-968991e55414.
Texto completoTarragó, Munté Daniel. "Hydraulic fills liquefaction : effect on quay stability". Doctoral thesis, Universitat Politècnica de Catalunya, 2021. http://hdl.handle.net/10803/672274.
Texto completoEl punto de partida de esta tesis es la rotura de parte de un muelle en construcción. El muelle estaba dividido en dos fases, la rotura solo afectó a la Fase 1. La rotura y toda la información relevante sobre el diseño, construcción y resultados de la auscultación se describen en detalle junto con los resultados de la campaña de reconocimiento efectuada después de la rotura. La licuefacción estática del relleno hidráulico colocado en el trasdós del muro del muelle fue la causa principal de la rotura. El estado del relleno hidráulico se estudia en el marco del conocimiento actual del fenómeno y de una serie de criterios de licuefacción existentes. Además, se describe un modelo constitutivo elasto-plástico capaz de simular el comportamiento frágil no drenado que subyace al fenómeno de licuefacción estática. Es un modelo de estado crítico que incorpora el concepto de parámetro de estado. Los consiguientes análisis de elementos finitos reproducen satisfactoriamente el comportamiento del muelle durante la construcción, así como las características y circunstancias de la rotura. Se identifican dos posibles mecanismos desencadenantes que explican la rotura: licuefacción espontánea o licuefacción de una zona limitada del relleno hidráulico debido a la simultánea construcción de una mota. Un estudio paramétrico verifica la solidez de las simulaciones y la dependencia que presenta la estabilidad del grado de fragilidad del relleno hidráulico. Análisis similares de la Fase 2, no involucrada en la rotura, revelaron que el margen de estabilidad era reducido en caso de que el relleno hidráulico sufriera licuefacción. Se implementaron diversas medidas de mejora del terreno y se instaló un extenso sistema de monitorización. La construcción de la Fase 2 se completó usando el método observacional que implicaba una observación continua de los datos de instrumentación y su comparación con los resultados de las simulaciones numéricas. Un reconocimiento del terreno adicional confirmó que las medidas de mejora del terreno habían conseguido eliminar el potencial de licuefacción, tanto estática como cíclica, del relleno hidráulico. La Fase 1 del muelle involucrada en la rotura se reconstruyó con relleno terrestre sin potencial de licuefacción de acuerdo con los datos del reconocimiento del terreno efectuado. En base a la experiencia y trabajos realizados en este caso, se propone un esquema de actuación para casos de muelles construidos con relleno hidráulico potencialmente licuefactable. Este esquema consta de un protocolo para evaluar el potencial de licuefacción de rellenos hidráulicos, el uso de una ley constitutiva capaz de simular apropiadamente la licuefacción estática, la implementación de un conjunto de medidas de mejora del terreno para eliminar el potencial de licuefacción estática y la instalación de un sistema de auscultación para controlar el comportamiento del muelle durante la construcción y proporcionar datos para comparar con los resultados de los análisis numéricos.
Hayati, Hossein. "Characterizing liquefaction resistance of aged sand deposits". Connect to this title online, 2009. http://etd.lib.clemson.edu/documents/1246545673/.
Texto completoTaiebat, Hossein Ali. "THREE DIMENSIONAL LIQUEFACTION ANALYSIS OF OFFSHORE FOUNDATIONS". Thesis, The University of Sydney, 1999. http://hdl.handle.net/2123/499.
Texto completoTaiebat, Hossein Ali. "THREE DIMENSIONAL LIQUEFACTION ANALYSIS OF OFFSHORE FOUNDATIONS". University of Sydney. Civil Engineering, 1999. http://hdl.handle.net/2123/499.
Texto completoDavenport, George Andrew 1965. "A process control system for biomass liquefaction". Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/558114.
Texto completoUpadhyaya, Sneha. "Development of an Improved and Internally-Consistent Framework for Evaluating Liquefaction Damage Potential". Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/95941.
Texto completoDoctor of Philosophy
Soil liquefaction continues to be one of the leading causes of ground failure during earthquakes, resulting in significant damage to infrastructure around the world (e.g., the 2010-2011 Canterbury earthquake sequence in New Zealand, 2010 Maule earthquake in Chile, and the 2011 Tohoku earthquake in Japan). Soil liquefaction refers to a condition wherein saturated sandy soil loses strength as a result of earthquake shaking. Surface manifestations of liquefaction include features that are visible at the ground surface such as sand boils, ejecta, cracks, and settlement. The severity of manifestation is often used as a proxy for damage potential of liquefaction. The overarching objective of this dissertation is to develop improved models for predicting triggering (i.e., occurrence) and surface manifestation of liquefaction such that the impacts of liquefaction on the natural and built environment can be minimized. Towards this end, this dissertation makes the following main contributions: (1) development of an approach for selecting an appropriate factor of safety (FS) against liquefaction for decision making based on project-specific consequences, or costs of mispredicting liquefaction; (2) development of an approach that allows better interpretations of predictions of manifestation severity made by the existing models in profiles having high fines-content, high plasticity soil strata (e.g., clayey and silty soils), given that the models perform poorly in such conditions; (3) development of a new model for predicting the severity of manifestation that more fully accounts for factors controlling manifestation; and (4) development of a framework for predicting liquefaction triggering and surface manifestation such that the distinct factors influential to each phenomenon are handled more rationally and consistently.
Shaw, John Michael. "Novel design criteria for direct coal liquefaction reactors". Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25971.
Texto completoApplied Science, Faculty of
Mining Engineering, Keevil Institute of
Graduate