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.
Results
Showing 1 to 17 of 17 for “"air--water interfaces"”.
-
Adsorption of Single and Multi-Component Per-and Polyfluoroalkyl Substances (PFAS) at Air-Water Interfaces
… the transport and retention of PFAS in groundwater systems, with a particular focus on their adsorption to air-water interfaces under environmentally relevant conditions. Laboratory experiments were conducted in one-dimensional columns and in a two-dimensional cell to assess the air-water …
-
Molecular Simulation Study of Oil Hydrocarbons, Dispersants and Other Organics in Atmospheric Air/Water Interfaces
… Span 80) from Corexit dispersants at atmospheric air/water and air/seawater interfaces. All these compounds can significantly contribute to the formation of secondary organic aerosols (SOAs). Furthermore, our simulation work on IVOCs, SVOCs and Corexit surfactants, combining with experiments from …
-
Nonequilibrium Phenomena in Multiphase Flow, Transport, and Phase Change in Porous Media: Pore-Level Physics, Network Modeling, and Upscaling
… due to their adsorption at both bulk capillary air--water interfaces between soil grains and thin-water-film air--water interfaces on soil grain surfaces. So far, most state-of-art field-scale models assumed that PFAS can instantaneously reach chemical equilibrium in each REV and access all …
-
Effect of micelles on flotation of metal ions
… metal counterions such as copper and zinc at the air-water interface on its concentration in the solution, was undertaken in order to better understand the process of ion flotation. The study is divided into two broad categories, the first of which consists of the evaluation of the extent of …
-
Modeling Bubble Coarsening in Froth Phase from First Principles
Between two neighboring air bubbles in a froth (or foam), a thin liquid film (TLF) is formed. As the bubbles rise upwards, the TLFs thin initially due to the capillary pressure created by curvature changes. As the film thicknesses (H) reach approximately 200 nm, the disjoining pressure created by …
-
Dynamics and Phase Behavior of Mixed Antibody-Excipient Adsorption at an Air/Water Interface
… nature drives mAbs to strongly adsorb to air/water interfaces. Interfacial adsorption presents a central problem to the production and use of antibody-based pharmaceuticals. Air/water interfaces are frequently generated during the manufacture (filtration and chromatography) and production …
-
The systematic study of corrosion and oxygen control by chemical scavenging agents
… of solution alkalinity and elimination of air/water interfaces was more important than the scavenger chosen for oxygen control.
-
Theoretical and experimental investigation of the equilibrium and dynamic interfacial behavior of mixed surfactant solutions
… In particular, surfactant adsorption at air-water interfaces causes the surface tension to decrease, which, for example, can control the spreading properties of a liquid, and hence, is important in practical applications involving the use of paints and pesticides, as well as in the …
-
Particle separation via the hybrid application of optical and acoustic forces
… glass capillaries is shown, utilising the two pairs of opposing channel walls and the air-water interfaces of two air bubbles as acoustic reflectors. Standing waves set up between these surfaces show discrete acoustic trapping sites for varying lengths of fluid cavity.<br/><br/>A method of …
-
The exchange of oxygen at the surface of open waters under wind forcing
… solubility gas transfer across wind-forced wavy air-water interfaces. The study focuses on the increase in gas flux associated with the microphysical interfacial wind momentum exchange and the complex wave coupled hydrodynamics. Key elements of the laboratory investigations included the …
-
Effects of Aqueous Organic Coatings on the Interfacial Transport of Atmospheric Species
Species must interact with air—aqueous interfaces in order to transport between either phase, however organic coated water surfaces are ubiquitous in the environment, and the physical and chemical processes that occur at organic coated aqueous surfaces are often different than those at pure …
-
Effect of Cell-Substrate Interactions on Epithelial Cell Mechanics
… epithelial monolayers by culturing cells at an air-liquid interface. These model monolayers were grown in the absence of any supporting structures in hanging drops. We found that the direction of strain in the unsupported monolayers was not correlated to nuclear alignment as observed when the …
-
Caseins micelles crosslinked with transglutaminase: foaming properties as a function of pH
… were prepared at 27.5 g/L in deionized type 1 water with 2 mM CaCl». The ssamples were acidified at pH values ranging from pH 7.0 to pH 2.0, at intervals of 0.5. The samples obtamed were analyzed im terms of particle size, charge, surface tension, absorbance and foam stability. Tgase did not …
-
Effects of sucrose on the foaming and interfacial properties of egg white protein and whey protein isolate
… are present in aerated foods to stabilize the air/water interface by lowering the interfacial tension and forming strong interfacial films. Sugars are known to influence the functional properties of protein foams. This study investigated the mechanism responsible for sucrose effects on the …
-
Particle Detachment in Single-Phase and Two-Phase Flows in Porous Media
… experiments. Particles remain on the air-water interfaces of residual liquid patches left behind the drainage front. Later, these particles join the imbibition front away from the substrate. In a previously dried channel, the vapour condensation ahead of the imbibition front detaches …
-
Quantitative Measurements of Force Distribution in Single and Multi Cellular Systems
… By exploring the impact of surface tension of air-water interfaces from protein solution in close contact with a micro-array, the force dependence of fibronectin fibre formation was shown. Part III describes the application of force sensor arrays for measuring an adherent cell’s spatial …
-
Considering the Action of Degrading Water Quality on the Electrochemical Response of Sulphide Minerals
… compelled to reduce their consumption of fresh water. Closed water circuits are an attractive solution and, in addition to reducing freshwater consumption, they have the added benefit of reducing reagent consumption as well as the environmental impact of mining operations by eliminating effluent …