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 30 for “"Agitator"”.
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Henry Albach, editor and agitator, 1914-1918
John Henry Albach, usually called Henry, was a newspaper owner and editor who represented two minorities in turn-of-the-century Lawrence, Kansas: the German-Americans and the Democrats. The son of a German immigrant who had fled Germany after the failure of the democratic revolution of 1848, Albach …
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A piezoelectric translational flow agitator for active air cooling of electronics.
… is coupled with a piezoelectric translational agitator and micro pin fin arrays on the heat sink surfaces is considered. The piezoelectric translational agitator generates high frequency and large displacement motion to a blade. It is driven by an oval loop shell that amplifies the small …
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Design and experimental testing of metamaterial-based agitators
… dry cooling systems. Several metamaterial-based agitators were assembled with a commercial extruded heat sink where experimental testing was conducted to investigate the validity of the modified configuration. Vortex-induced vibrations (VIV) of structures have attracted much attention these years …
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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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BTX extraction by sulfolane in a mixer-settler cascade
… The effects of temperature, phase ratio, and agitator speed were investigated. The efficiency increased with agitator speed but > 1050 rpm resulted in secondary haze formation. An optimum temperature of 30oC was selected from the phase equilibria; the optimum solvent: feed ratio was 3:1 for 4 …
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Modeling and Simulation of Large Scale Stirred Tank
… of the flow field and the power demand of the agitator. The results from the numerical models were compared with empirical data collected from these pilot plants that had been operated at an earlier date.</p><p>Mixing is commonly used in a variety ways throughout industry to blend miscible …
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Effects of hydrodynamic stress on growing Saccharomyces cerevisiae in a slurry reactor
… of inoculum size, inoculum age and type of agitator were also investigated. This study was carried out with the intention of identifying biological responses to hydrodynamic stress and modelling observed effects on microbial activity.
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Development of a micro-feeder for cohesive pharmaceutical powders
… design featured a feeding screw and double-screw agitator to regulate powder flow. The feeding screw was inclined to control powder flow variation, while the agitator prevented issues such as rat holes or arching. Achieving control over the flow rate and minimising flow rate variations can be …
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Enzyme diffusion and cellulose breakdown in the bioremediation of medical waste
… which could be agitated and reduced the agitator shaft power by as much as 50% when compared to the simulated waste tests with no cellulase. Significant mass reduction was also observed with the addition of cellulases to the slurries. Small-scale breakdown experiments were conducted with …
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Studies of Phase Inversion and Ambivalence in Liquid-Liquid Systems.
… with models relating drop sizes and hold-up to agitator speed. Experimental investigations were made into ambivalent phase inversion in a batch and continuous mixer-settler unit. Drop sizes and limits of phase inversion were measured. The model was tested with the experimental results obtained, …
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Searching for Sustainable, Intergenerational, and Multiracial Coalitions on the Neoliberal Campus: A Case Study
… and re/productions effected by the alt-Right agitator Milo Yiannopolous' visit to DePaul University's campus on his “Dangerous Faggot Tour” and the consequential riot he led through campus in 2016. Looking closely at the relational positionalities and responses of the student protesters, the …
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The esterification of tall oil to obtain drying oil characteristics
… Agitation was supplied by means of an air driven agitator. The runs were six hours in length with the exception of one four hour run made at 32C°C. The procedure was repeated using activated alumina as a catalyst. the same procedure was repeated using dipentaerythritol in place of pentaerythritol. …
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A Unity of Contraries: Dorothy Day and the 'No-Alibi' Rhetoric of Defiance and Devotion
… divorcée, single parent, pacifist, activist, agitator, convert, founder of the Catholic Worker, and 'thorn in the side of both church and state.' </p><p>This work argues that Day is a realistic idealist and a textured-by-humanity communication role model whose authenticity and courage …
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Mathematical modelling and control of agitated extraction columns
… models that relate the input variables (agitator speed, solvent feed flowrate and concentration, feed concentration and flowrate) to the output variables (raffinate concentration and extract concentration) using the asymptotic method of system identification. The reduced-order models were …
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The Identity, Agency and Political Influence of al-Hakkamat Baggara Women Poets in Armed Conflict in Darfur, Sudan, from 1980s to 2006.
… fully constructing her role as a folk singer and agitator as well as a powerful social actor. Her nurtured personal and social identities reconstruct for her gender roles that are found to be both feared and revered by the community and appropriated by the government. She is found to respond …
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Size reduction and polymer encapsulation of carbon black in gas-expanded solvents
… has a fluid volume of 1 liter with a multidisc agitator capable of rotating at more than 3400 RPM. Pigment particles are initially milled in a solution of non-aqueous solvent and dissolved dispersing resin. Size reduction is achieved within the apparatus via the grinding action of 1.2 mm …
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Gas absorption with chemical reaction in an agitated reactor
… rates ranging from 150 revolutions of the agitator to 350 and for five gas input rates ranging from superficial gas velocities of 0.29 centimeter per second to about 1.2 centimeters per second. These parameters were evaluated for three different caustic strengths. The interfacial areas show …
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The Discursive Commons: The Establishment, "Outside Agitators," And "Communist Subversives" In Gadsden's Depression-Era Political Environment
… ideas such as the trope of the outside agitator, and the idea of the communist radical, were used by the establishment to incite violence against United Rubber Workers union organizers who came to Gadsden to enlist members in the 1930s and early 1940s. It is my contention that these …
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The effect of continuous mechanical mixing on the iodine disinfection of settled domestic sewage
… experiments were run usfrtt a six-bladed turbine agitator in a fully baffled tank. The mixing intestines of the first three experiments were 0.292, 0.00748, and 0.0641 foot pounds per second per 1,000 gallons, respectively. The mixing was contInuous throughout the experiment. The last two …
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The biography of Jonathan Jennings : Indiana's first governor
… Jonathan Jennings was better characterized as an agitator, symbolizing the anti-Harrison, anti-slavery forces.2. Jennings's concern for local development enhanced his effectiveness as state governor. 3. Jennings's weakness for alcohol combined with the changing political structure produced by the …
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