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Showing 1 to 20 of 1057 for “"Bubble"”.
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Spectroscopic Studies of Multi -Bubble and Single Bubble Sonoluminescence
Single bubble sonoluminescence (SBSL) was also studied. Small concentrations of organic solutes suppress SBSL from water containing dissolved air, but only when the solvents are volatile and can enter the bubble interior. These results were interpreted in light of the dissociation hypothesis for …
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Single bubble sonoluminescence
… has been directed to the phenomenon of single bubble sonoluminescence, SBSL in which a single, stable, acoustically levitated bubble is made to oscillate with sufficiently large amplitude so as to emit picosecond light pulses in each cycle of the acoustic drive pressure. Remarkably, the …
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Air Bubble Screens
Made available in DSpace on 2014-12-13T19:31:49Z (GMT). No. of bitstreams: 1 7913634.pdf: 6810172 bytes, checksum: 1859443d7d47449148af77a14f7d720f (MD5) Previous issue date: 1978
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Single-bubble sonoluminescence
… by which nonvolatile species enter a cavitating bubble’s core and emit light, sulfuric acid (H2SO4) and a surfactant sodium dodecyl sulfate (SDS) were explored for studies of single-bubble sonoluminescence (SBSL) to test the heated shell model of nonvolatile vaporization. It was found that the …
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Microfluidic bubble logic
… fluid dynamics, I present a new logic family "Bubble Logic" capable of both universal computation and programmable material manipulation in an all-fluidic two-phase system. This removes the distinction between materials and mechanisms to control them, bringing the programmability of the digital …
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Mediating the Bubble: ESPN's SportsCenter's Coverage of the NCAA men's Basketball Bubble
… coverage of the NCAA men's basketball tournament bubble. The dissertation examines the differences in coverage between average teams from the six major NCAA Division I men's basketball conferences and teams from the other 25 conferences. The dissertation examines SportsCenter's coverage from an …
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Bursting the broadband bubble
Broadband has revolutionised the way the Internet is used and has become the critical enabling infrastructure of our modem and knowledge-based economy. Its widespread introduction has not only greatly enhanced the speed at which information online can be accessed, but also the range and …
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Intelligent Magnetic Bubble Memories
Made available in DSpace on 2014-12-13T18:02:06Z (GMT). No. of bitstreams: 1 7913502.pdf: 4715992 bytes, checksum: 3e163116438d522f941795eb737c98f7 (MD5) Previous issue date: 1978
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Heat transfer and bubble dynamics in bubble and slurry bubble columns with internals for Fischer-Tropsch synthesis of clean alternative fuels and chemicals
… Fischer-Tropsch (F-T) synthesis process. Slurry bubble column reactor is the reactor of choice for the commercialization of the F-T synthesis. Even though the slurry bubble column reactors and contactors are simple in structures, their design, scale-up, operation, and performance prediction are …
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Bubble dynamics in polymeric foams
… of fluid viscoelasticity on the expansion of gas bubbles in polymer foams for both non-reactive and reactive polymers are investigated. Polymer foams are used extensively in consumer products, from car parts to upholstery. They are produced either by injection moulding (of non-reactive polymeric …
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Homomorphisms between bubble algebra modules
… we study the representation theory of the bubble algebras. We focus on determining the homomorphisms between cell modules for these algebras. We show that the bubble algebras are cellular, and form a tower of recollement. By decomposing Gram matrices we are able to determine homomorphisms …
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The Planar Triple Bubble Problem
We prove the planar triple bubble conjecture that the standard triple bubble is the unique least-perimeter way to enclose and separate three regions of given areas. We also prove a bound on the number of convex components and a bound on the number of all components in any minimizing planar bubble.
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Viscous liquids in bubble columns
… viscous Newtonian and non-Newtonian liquids in bubble columns with, and without, draft tubes. The importance of the parameters influencing bubble column reactors is discussed with reference to previous work. The shapes and rise velocities of single bubbles in these liquids were studied in an …
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Bubble Size Effects in Coal Flotation and Phosphate Reverse Flotation using a Pico-nano Bubble Generator
… is mainly due to the low probability of bubble-particle collision while the main reason for poor flotation recovery of coarse particles is the high probability of detachment of particles from the bubble surface.;Pico-nano bubbles refer to tiny bubbles smaller than 0.5 mum, which can be …
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Direct numerical simulation of bubble-bubble and droplet-droplet interaction using a Surface Thin Film model
… systems where particles could either be bubbles or droplets; rigid particles are not considered. The model is tested against experimental results from binary collision of hydrocarbon droplets. Good qualitative numerical results are obtained at a practical computational cost.
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Numerical simulation of bubble columns by integration of bubble cell model into the population balance framework
Bubble column reactors are widely used in the chemicals industry including pharmaceuticals, waste water treatment, flotation etc. The reason for their wide application can be attributed to the excellent rates of heat and mass transfer that are achieved between the dispersed and continuous phases in …
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Bubble scavenging in Hele-Shaw cell
When a bubble rises in a suspension of microscopic particles, the particles that collide with the bubble can stick to it and be brought to the surface, a process used to separate microparticles in a variety of industrial processes ranging from wastewater recovery to mineral flotation. Previous …
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Detailed simulations of bubble-cluster dynamics
The violent collapse of bubble clusters can be an important mechanism of damage to adjacent material surfaces in both engineering and biomedical applications. Because of their complexity, past theoretical studies have generally been restricted to significantly simplified models, such as homogenized …
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Mass transfer in bubble column contractors
… overall volumetric mass transfer coefficients in bubble column contactors have been investigated for water and aqueous electrolyte solutions. Two methods were used to obtain experimental data on volumetric mass transfer coefficients: the steady state oxidation technique and a transient method. The …
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Pressure drops through bubble cap plates
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 1939
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