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 20 of 21 for “"Micro-porous"”.
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Developing a low-cost ceramic micro-porous water filter for removal of microorganisms that cause common diseases
… slip casting process was used develop a micro-porous ceramic water filter. The method was found to be more suitable than either extrusion or die casting for manufacturing a locally suitable, low cost ceramic water filter. Slip casting, requiring limited expensive equipment, usage of …
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Modelling the movement of superparamagnetic beads engulfed in endothelial cells
Colonization of porous scaffolds with cells is of increasing importance for various tissue engineering applications. Controlled placement of human umbilical vein endothelial cells (HUVECs) within a micro-porous, poly-caprolactone scaffold is facilitated with superparamagnetic beads introduced to …
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Solubility of fluorinated polymers in supercritical carbon dioxide
… first procedure yielded a solid polymer having micro-porous sponge like morphology containing of interconnected macrovoids, the latter method resulted in fine powders with lamellar structure of typical chain folded crystal, the crystalline powder is characterized by particle diameters in the …
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Studying Interactions of Gas Molecules with Nanomaterials Loaded in a Microwave Resonant Cavity
… of the cavity. This dissertation suggests that microwave spectroscopy of a complex medium of gases and carbon nanotubes can be used as a highly sensitive technique to determine the complex dielectric response of different polar as well as non-polar gases when subjected to intense electromagnetic …
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MICRO-CT EVALUATION OF MSC/HUVEC/HSC-MEDIATED ANGIOGENESIS IN LARGE PCL-ßTCP CONSTRUCTS IMPLANTED IN NUDE MICE
… stem cells(HSCs)-mediated formation of microvascular networks in a biocompatible PCL-ßTCP hybrid scaffold in an immuno-compromised nude mouse. The PCL-ßTCP scaffold (30% PCL: 70% ßTCP; 70% porosity) with interconnected open pores was fabricated in 6x6x6mm cubes. They were seeded with …
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Low Frequency Noise Reduction Using Novel Poro-Elastic Acoustic Metamaterials
… acoustic heterogeneous (HG) metamaterials and microperforated (MPP) acoustic metamaterials. HG metamaterials consist of poro-elastic material with a periodic arrangement of embedded masses acting as an array of mass-spring- damper systems. MPP acoustic metamaterials consist of periodic layers …
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Creation of Ovalbumin Based Scaffolds for Bone Tissue Regeneration
… 3D structures that promote cellular responses. Micro-porous scaffolds are a promising construct for bone tissue regeneration; therefore OA crosslinked with three different concentrations (10%, 15% and 20%) of glutaraldehyde (GA) was used in this research. After fabrication, a porous morphology …
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Electroding Methods for in situ Reverse Osmosis Sensors
… electrolyte concentration and protein fouling. Micrographs showed coating layers and pre-soak solution influence gold exchange-reduction electrode formation. High surface resistance makes gold exchange-reduction an unsuitable method. Concentration sensitivity experiments showed carbon grease and …
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Van Der Waals Interactions Based Rheological Analysis for Electrosterically Stabilized Nano-Sized Alpha Silicon Carbide-Lactobacillus Gg Dispersions
… area of nano-bio technology: A novel nano and micro porous materials fabrication process. Porous materials are used for a variety of applications including insulation, filtration, catalytic substrates, textiles and consumer goods and accounts for billions of dollars in sales annually. Results …
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Characterization of Biomaterials for Regenerative Medicine via Computational Fluid Flow Analysis of Dynamic Contrast Enhanced – Magnetic Resonance Imaging (DCE-MRI) Images
… to characterize the fluid flow metrics through Micro-porous Annealed Particle (MAP) hydrogels and others using Dynamic Contrast Enhanced – Magnetic Resonance Imaging (DCE-MRI) and computational analysis of the images via MATLAB. The analysis was utilized to analyze the fluid flow through several …
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An investigtion into the ability of a kinetic particle-based solver for study of gas flows in micro-scale structures
… understanding of the flow physics encountered in micro- and nano-scales. The prominence of this line of enquiryis due to its recurring influence in the fields of MEMS and porous media. These flows occur in pathways whose width is comparable to the mean free path and thus, are classified as …
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MODELLING CRYSTALLIZATION FOULING IN LIQUID-TO-AIR MEMBRANE ENERGY EXCHANGERS
Micro-porous membranes are used in membrane-based separation processes to separate water from an aqueous solution. Liquid-to-air membrane energy exchangers (LAMEEs) use membranes to control humidity and temperature in heating, ventilation and air-conditioning (HVAC) systems. A semi-permeable …
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The influence of micro-porosity on drainage relative permeability using digital core analysis
High resolution images acquired from X-ray micro-tomography provide 3D pore geometry on which flow and transport properties can be computed. However, these images exhibit limited resolution in particular if field of view needs to be optimised at the same time. Constrained by the image resolution, …
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Studies of the complexation behaviour of transition metals applicable in membrane technologies
… solvent extraction method that uses a micro-porous hydrophobic membrane as supporting layer. This membrane is impregnated with an organic solvent containing the specific carrier molecules for metal ion extraction. In this study, the extractions of some metal complexes applicable in …
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Studio Sperimentale e Modellazione della Separazione di Proteine con Membrane di Affinità
… the dispersion phenomena occurring both in the micro-porous membranes as well as in the extra-column devices used in the system. The model considers specifically all the different chromatographic steps, namely adsorption, washing and elution. The few relevant fitting parameters of the model were …
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Drivers, Dynamics and Hazards of the largest pyroclastic eruptions of Tongariro Volcano, Central North Island, New Zealand
… textural studies, it is shown that these mostly micro-porous pumices erupted via crystallisation-driven second boiling and magmas erupted with a range of compositional, gas and crystal contents. Foam-like vesicular pumices were only erupted by more open northern vents in the more rapidly …
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Soft matter engineering for cellular bioelectronic interfaces
… approaches that enable such investigations in a micro-environment mechanically and biologically conducive to individual cells. In this thesis, micron-scale soft-matter (droplets and microgels) were leveraged to develop two such cellular-bioelectronic interfaces. One such interface to leverage …
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Mechanical behavior of shell casing and separator of lithium-ion battery
… PP separator under biaxial loading. Owing to the micro porous semi-crystalline nature of widely used PP separator, interrupted tests of PP separator under different in-plane tension including machine direction, transverse direction and diagonal direction were conducted in order to reveal …
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Influence of surface tension and concentration of a non-ionic surfactant on the barrier effectiveness of a microporous polypropylene fabric for pesticide protective clothing
… the barrier effectiveness of a fabric containing microporous polypropylene (PP) film that may be used in pesticide protective clothing (PPC). Aqueous solutions of Triton® X-100, a non-ionic surfactant, at various concentrations were prepared, and the γ of each solution was determined. The …
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Gas diffusion electrodes and operating conditions for electrochemical energy storage applications
… during continuous operation. In addition, micro-porous layers (MPLs) composed of carbon powder exhibit better durability leading to high cathode performance compared to MPLs composed of carbon nanotubes for electroreduction of CO2. Lithium air (Li-air) battery can be a promising candidate …
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