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 15 of 15 for “"Surface pH"”.
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Investigation of acid/base interactions in adhesion
… the role of these interactions in adhesive phenomena. The model systems investigated were representative of real substrates and soft, viscoelastic adhesives where, in one case, favorable acid/base interactions were possible which were not possible in the other. Inverse gas chromatography …
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Electrochemical and spectroscopic insights into the electroreduction of carbon dioxide to value added chemicals
… studies. Chapter 2 reports several high surface area Cu-based catalysts, prepared by the electro-deposition of Cu, Cu/Ag, and Cu/Sn alloy films with the addition of 3,5-diamino-1,2,4-triazole (DAT) as an electrodeposition inhibitor. All three Cu-based electrodes exhibit high Faradaic …
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Nucleic acid denaturation at an electrode surface
… and discrimination of DNA sequences based on surface enhanced Raman spectroscopy (SERS) and electrochemically driven denaturation. A DNA helix can be immobilised at a nano-structured gold electrode and then denatured into its constituent components by driving the potential at the surface …
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Electrodeposition of nickel-copper alloys and nickel-copper-alumina nanocomposites into deep recesses for MEMS
… their corrosion resistance, magnetic and thermophysical properties. Alumina nanoparticulates included into metal matrices improve hardness and tribology of deposits. The Ni-Cu alloys and Ni-Cu-g-Al2O3 nanocomposites were electrodeposited from a citrate electrolyte, both at low and high pH. …
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Investigating mechanical properties of ordinary portland cement. Investigating improvements to the mechanical properties of Ordinary Portland Cement (OPC) bodies by utilizing the phase transformation properties of a ceramic (Zirconia).
… during which the effect of crystallite size pH on the preparation solution, precursor salt, and the presence of co-precipitates, Fe(OH)3, SnO2 and SiO2 on the crystallization temperature, enthalpy and crystal structure, immediately following the crystallization exothermic burst phenomenon in …
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Controlling ceramic porosity using carboxylate-alumoxane nanoparticles
… the mineral boehmite with carboxylic acids. The physical characteristics of carboxylate-alumoxanes, such as ceramic yield, particle size, pore volume, and pore diameter are dependent upon the carboxylate ligand that is substituted on the surface of the boehmite mineral. Of the synthesized …
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RNA Knockdown of the Immune Checkpoint VISTA Promotes Tumor Regression
… as dendritic cells (DCs), tumor associated macrophages (TAMs) and myeloid derived suppressor cells (MDSCs). In addition, VISTA expression is increased on tumor-infiltrating regulatory T cells (Tregs) compared to those in the periphery. VISTA has been shown to suppress effector T cells through …
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The Surface Properties of the Mammalian Small Intestine: their role in the Absorption of Nutrients and their Variation in Health and Disease
The intestinal surface microclimate pH was measured in rat and man in vitro and rat in vivo using a pH-microelectrode. The mechanism of its creation and maintenance, its role in the absorption of nutrients particularly folate, and its variation in normal and diseased human intestinal conditions was …
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The meridional and seasonal variability of the carbonate system in the Southeast Atlantic sector of the Southern Ocean: SCALE 2019 Experiment
… well-characterized regions that have emerging pH and carbonate data, distant areas like polar oceans remain seasonally undersampled. Consequently, there may be a significant gap in our understanding of biological implications of future ocean acidification (OA). This study seeks to examine the …
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Dating Death: Forensic taphonomy and the postmortem interval
… formation of orthorhombic crystals, a change in surface pH and colonisation by bacteria. The bacteria found on the cartilage surface were in close proximity to the crystals and when cultured on a B-41 medium were found to precipitate crystals of the same morphology and chemical composition to …
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Thermodynamics and Kinetics of Carbon Dioxide Corrosion of Mild Steel at Elevated Temperatures
… at high temperature. The entire scope of this Ph.D. research is to investigate and model CO<sub>2</sub> corrosion of mild steel over a range of 25-250¿¿C. The research is divided into four main sections: chemical thermodynamics, electrochemical thermodynamics, electrochemical kinetics, and the …
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Decontamination method comparison testing using simulated contamination
Radiological decontamination of surfaces is challenging. Cleanup tasks are typically visual or even chemically measured, but radioactive contamination is invisible and measured at extremely low levels. Different contamination events have lead to the development of hundreds of decontamination …
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The responses of subtropical nearshore fishes to climate change
… Panel on Climate Change (IPCC) predicts that sea surface pH will decrease by 0.06 - 0.32 pH units and temperature will increase by 0.6-2.0°C over the next 100 years, and extreme weather events, such as major storms (e.g., tropical cyclones), floods, heat waves, and cold spells, are expected to …
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Biogenic acid corrosion of sewer concretes with different binders: in-situ and model studies, with advancement of the life factor prediction method
… agents that decrease acid production, and surface treatment techniques that inhibit chemical attack and acid penetrability into the concrete. However, these techniques are expensive and variably effective, and some may lead to a loss of structural integrity and performance during the long …
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Ion specific effects on charged interfaces
The physico-chemical phenomena occurring at charged interfaces are specifically affected by the type and the concentration of electrolytes. This has implications both in living and in inorganic systems. The discovery of the ‘ion specific effects’ dates back to Hofmeister (1888), who observed the …