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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 12 of 12 for “"Pore shape"”.
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Designing Scaffolds for Directed Cell Response in Tissue Engineering Scaffolds Fabricated by Vat Photopolymerization
… the scaffold's geometrical features, including pore shape and size, porosity, and overall dimensions. Each of these parameters are known to affect cell viability and proliferation, but due to the difficulty of isolating each parameter when using scaffold fabrication techniques such as porogen …
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Development of a Predictive and Mechanistic Model for Capacitive Deionization
… was modified to account for finite ion size and pore geometry by including the Carnahan-Starling (CS) equation of state and considering boundary conditions resulting from difference in pore shape and size and the subsequent impact on potential and concentration profiles. This GCS-CS model with …
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Synthesis, Microstructure and Mechanical Properties of Titanium with Controlled Levels of Porosity
… fracture morphology, gas permeability, pore size analysis and pore shape factors for the porous Ti compacts were determined for different porosity levels. A decreasing porosity level resulted in less open porosity and gas permeability, reduced pore size, and an increased tensile stress …
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Osmotic reflection coefficient
… fibrous membranes. The effects of molecular shape on [sigma]o for rigid macromolecules in porous membranes were analyzed using a hydrodynamic model. In this type of model, employed first by Anderson and Malone, steric exclusion of the solute from the periphery of the pore induces a …
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The Use of the Ostracode Cyprideis Americana (Sharpe) as a Proxy for Salinity in Bahamian Lake Systems
… stable isotope composition, and sieve pore shape values have been linked to changes in salinity. This study analyzed the response of the euryhaline ostracode, Cyprideis americana, to salinity in six lakes from two Bahamian islands across two seasons. The purpose of this work was to …
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FABRICATION OF FUNCTIONAL NANOSTRUCTURED POLYMERS BASED ON THERMOTROPIC AND LYOTROPIC LIQUID CRYSTALS DERIVED FROM SUSTAINABLE RESOURCES
… from thermotropic LCs, precise tuning of pore size and functionality (e.g. for addressing different applications) remains a challenge. We developed a new approach in which changing the stoichiometry of building blocks of self-assembling supramolecular constructs led to a robust handle for …
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Assessment of hydro-physical properties of some crusting soils in four different soil form as revealed by micro-focus x-ray computed tomography in Limpopo Province, South Africa
… micro-morphometric of crusting soil’s pore system, quantifying soil structure degradation through crusting development and visualizing hydro physical properties in all four-soil form. Micro X-ray Computed Tomography techniques can greatly add value to existing knowledge because they can …
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Relationships between homogeneity, structure and mechanical properties in certain sintered iron, nickel, carbon materials.
… determined stress concentration effect of the pores, was found to predict tensile strength more accurately than other published equations, provided that the materials concerned possessed homogenisation parameters below a certain value. Although these materials of high homogeneity consisted …
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A nanostructured porous silicon based drug delivery device
… (RIE) method through a masking template. Random pores, with irregular pore shape and size in the micro- to mesoporous regime (< 50 nm), were obtained using the stain etching method but this method suffered from poor reproducibility and non-uniformity. Two novel RIE approaches were investigated to …
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Diagenesis and porosity development of the Mission Canyon and Charles Formations (Mississippian), Treetop and Whiskey Joe Fields, North Dakota
… neomorphism, and pressure solution. </p><p> Pore types present within rocks of the upper Mission Canyon and lower Charles Formations include two primary pore types: interparticle and intraparticle, and four secondary pore types: intercrystalline, moldic, vuggy, and fracture. </p><p> …
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Characterizing the physical and hydraulic properties of pine bark soilless substrates
… and reduced plant growth. Understanding pore size distributions, water dynamics, and gas diffusivity of these substrates is essential to promote plant growth. The effects of different particle sizes of soilless media on processes such as infiltration, hydraulic conductivity, and gas …
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Biocatalysis on nanostructured surfaces : investigation and application of redox proteins using spectro-electrochemical methods
… the porous material, such as the structure and pore shape, the surface chemistry, as well as the protein size and charge. UV-Vis and resonance Raman spectroscopy, in combination with direct protein voltammetry, are employed for the characterization of cytochrome c immobilized in the mesoporous …