Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Pore connectivity"”.
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SEISMIC SIGNATURES OF PORE CONNECTIVITY
… influence on seismic signatures, especially pore connectivity. Firstly, I use the Zoeppritz equation to analyze reflection coefficient's sensitivity to eight medium parameters; results show they all have significantly different sensitivity. Friability is an empirical parameter introduced in …
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Image-Based Quantification and Coupled PNM-FEM of Architecture, Deformation, and Fluid Dynamics in Biological Porous Media Under Mechanical Loading
… describes an image-based method that integrates Pore Network Modeling (PNM), Finite Element Method (FEM), and statistical image analysis to study the involvement of fluid on the mechanical responses of load-bearing connective tissues. The extracellular matrix (ECM), a porous scaffold filled with …
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Estimating scale dependence of saturated hydraulic conductivity in soils
… attributed to spatial heterogeneities, such as pore-size distribution and pore connectivity at small scales (e.g., core), fracture orientation and long-range correlations at large scales (e.g., field). In this study, we apply concepts from percolation theory to estimate the scale dependence of …
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Brittle-viscous deformation cycles at the base of the seismogenic zone in the continental crust
… (0.8-4.4%) for different rock type, 2-20 µm pore size, representative of pore connectivity, and microstructural observation suggest a relationship to a dynamical cycle of fracturing and sealing mechanism, mostly controlled by ductile deformation. Similarly, the observation from fracture …
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Evaluation of diagnostic fracture injection test (DFIT) and rate transient analysis (RTA) in Hereford field, northern DJ Basin
… are highly related to a physical structure of pore space, pore connectivity, and natural fracture density in such reservoirs. Because of the flow dominance of fractures—natural and from well stimulation, these reservoirs are categorized as dual-porosity reservoirs. The two interacting pore …
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Numerical Study of Nutrient Mixing in Trabecular Bone in Microgravity, Disuse and Normogravity
… deeper-stage homogenization due to greater pore connectivity, whereas in convection-dominated regimes higher bone density intensifies recirculation through confinement-induced velocity amplification. The bi-exponential rate constants show dependencies on frequency and bone density. Viscosity …
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The impact of bacteria on the biophysics of water retention and flow in soil
… of the 3D structures has shown decreased pore connectivity and destabilisation of aggregates in soil systems treated with bacteria deficient in the production of a key extracellular component, cellulose, LPS or viscosin (p < 0.05). Analyses of cracking patterns in two types of sandy loam …
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Catalyst Layer Design in Polymer Membrane Fuel Cells
… in transport performance by elongating pore channels. From this the second objective of this work was to examine the chemistry and morphology of both the non-PGM catalysts and sprayed catalyst layers and their effects on MEA performance. Another polymer electrolyte membrane fuel cell and …
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Prediction of Capillary Pressure and Relative Permeability Curves using Conventional Pore-scale Displacements and Artificial Neural Networks
Traditional network models use simplified pore geometries to simulate multiphase flow using semi-analytical correlation-based approaches. In this work, we aim at improving these models by (I) extending the numerical methodologies to account for pore geometries with convex polygon cross sections and …
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Soilless Substrate Hydrology and Subsequent Impacts on Plant-Water Relations of Containerized Crops
… increased unsaturated hydraulic conductivity, pore connectivity, and more uniform pore size distributions. These substrates were tested in a greenhouse with irrigation systems designed to hold substrates at (-100 to -300 hPa) or approaching (-50 to -100 hPa) water potentials associated with …
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In-situ Study of Single Pharmaceutical Granule Drying using Synchrotron X-ray Imaging
… to significantly influence the evolution of the pore volume and the moisture content, with the initial air volume fraction being as low as 0.02 and increasing to as much as 0.38 with the moisture ratio decreasing from 1.00 to as low as 0.00 throughout the drying process. Granules containing MCC …