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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 16 of 16 for “"Liquid mixing"”.
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Liquid-on-liquid mixing for slide-based biological assays
… of results, can take days to achieve. The liquid-on-liquid mixing (LOLM) method overcomes the diffusion barrier by layering an immiscible spectator fluid, such as mineral oil, on the thin film. Stirring the spectator fluid transmits shear at the liquid-liquid interface into the thin film. …
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Microbubble streaming flows for non-invasive particle manipulation and liquid mixing
Liquid transport at small length scales plays an increasingly important role in many emerging and inter-disciplinary fields, such as micro/nano manufacturing processes, biomedical engineering, lab-on-a-chip diagnostic technology, micro fuel cell, and bio-fluidics. As the length scale shrinks, the …
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Positron emission particle tracking applied to solid-liquid mixing in mechanically agitated vessels
… agitated vessels are widely used for various mixing operations within a wide range of industries including the chemical, pharmaceutical, food and petroleum industries. They are used for liquid blending, solid-liquid mixing, gas dispersion in liquids, heat/mass transfer enhancement and chemical …
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Agitation, mixing and mass transfer in simulated high viscosity fermentation broths
Gas-liquid mass transfer, agitator power consumption, rheology, gas-liquid mixing and gas hold-up have been studied in an agitated, sparged vessel of diameter, T = 0.3 m, with a liquid capacity of 0.02 m\(^3\), unaerated liquid height = 0.3 m. The solutions of sodium carboxymethylcellulose used …
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Studies of Phase Inversion and Ambivalence in Liquid-Liquid Systems.
The literature relating to liquid-liquid mixing, and the factors determining which phase is dispersed in batch or continuous systems, and studies of phase inversion have been reviewed. A mathematical model has been developed to predict the limits of phase inversion. The model is based on the …
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Sieve plate distillation dynamics
… to be a weighted sum of the compositions of the liquid and vapor streams entering the stage, while the output function was considered to be the liquid composition on the plate near the exit downcomer. The resulting frequency response was relatively flat in the frequency region of primary …
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Supercritical fluid spray processes for microencapsulation and formation of submicron aqueous dispersions of pharmaceutical compounds
… (sprayed) into supercritical (SC) CO₂. Upon liquid mixing, the solute materials precipitate to form microparticles. A Vapor-over-Liquid technique has been used to produce larger, uniform particle sizes of biodegradable polymers. By suspending a protein in the solvent phase, the protein can be …
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Effect of glove port height on upper body stress for performing laboratory work
… Seven male and two female participants performed liquid mixing and vial filling tasks within a portable glove box. The tasks were designed to simulate common glove box tasks performed in pharmaceutical and laboratory settings. Each participant repeated the designed tasks while the glove port …
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Nanoscale solidification of metals by atomistic simulations: From nucleation to nanostructural evolution
… grain boundaries and short range order in the liquid during the initial stages of solidification.</p> <p>To study the solid-liquid coexistence in binary Al alloys, interatomic potentials for binary Al-Cu, Al-Fe, Al-Ni, Al-Mg, Al-Si and Al-Ge alloys were developed based on 2NN-MEAM formalism. …
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Flow patterns, performance and scale-up of distillation trays
This work is concerned with the nature of liquid flow across industrial sieve trays operating in the spray, mixed, and the emulsified flow regimes. In order to overcome the practical difficulties of removing many samples from a commercial tray, the mass transfer process was investigated in an air …
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Ultrasonically Enhanced Mass Transport and Degradation of Polycyclic Aromatic Hydrocarbons in Solid-Liquid Two Phase Partitioning Systems
… subsequent PAH release and degradation in solid-liquid two phase partitioning bioreactors (TPPBs). Although such a process was successful, significant mass transport limitations involving PAH release from the polymers hampered productivity. The current work examined the possibility of applying …
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A hydrodynamic study of nickel suspension in stirred tanks
Many studies on solid-liquid mixing have been dedicated to low density particles at low solids concentrations. In the present work, computational fluid dynamics (CFD) simulation and experimental methods were employed to study suspension of high density particles (nickel) at high solids …
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Petrology and geochemistry of syenite intrusions in the Eastern Province of Zambia
… to both fractional crystallization and crystal-liquid mixing processes with the latter predominating.Rb-?r isotope data have yielded an isochron with an age of 1340+16 Ma and an initial Sr isotopic ratio of 0.7028+0.0001. The Sr ratio suggests a mantle origin for the magma whilst the age is …
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Fluid Dynamics And Scale-Up Of Bubble Columns With Internals
… an alternative energy source and providing clean liquid fuels as compared to other reactors. Most of the industrial applications of bubble column reactors require the utilization of heat exchanging tubes, the effect of which on the reactor's performance is not fully understood. This study proposes …
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Mixing in high throughput experimentation reactors
… a low Reynolds Number, Re, which results in poor mixing efficiencies. Together with unconventional geometries, i.e. lack of baffles and simple impeller designs, their fundamentals are not fully understood. The present study applies Particle Image Velocimetry (2-D PIV) and Planar Laser Induced …
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Comprehensive Computational Modeling of Hypergolic Propellant Ignition
… studied next, followed by the study of opposed liquid jets and the gas layer at the interface. Lastly, effects of transport properties on gas phase kinetics are studied using impinging vapor sheets.</p> <p>In order to mitigate the effects of non-linearities in the transient solution, an adaptive …