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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 13 of 13 for “"mechanical agitation"”.
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Radial parallel plate flow with mechanical agitation
Computer processors have significant and rising cooling requirements, with electronics cooling estimated to consume 1% of global energy consumption. An integrated fan heat sink was designed to help alleviate this issue, and is designed to simultaneously improve heat transfer and efficiency. Current …
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Mechanical Agitation Effects on Physical Properties of Calcium-Silicate-Cement Sealers
… real-time setting reactions and effects of mechanical agitation on flow, film thickness, and setting time of calcium-silicate-cement sealer (EndoSequence Bioceramic sealer). Single-paste bioceramic sealer (Brasseler, USA) was agitated for 10 seconds using a vortex mixer to assess flow, film …
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C. elegans integrates food, stress, and hunger signals to coordinate motor activity
… greatly reduces its rate of locomotion. While mechanical agitation greatly stimulates the locomotion of well-fed animals on bacteria, it does not greatly stimulate the locomotion of food-deprived animals on bacteria. Thus, the competing effects of food and mechanical agitation on the animal's …
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Enzymatic treatment of polyamide 6.6 fibres
… of proteins follows different steps and that mechanical agitation plays an important role in all of them. In order to study the synergism among mechanical agitation, enzyme adsorption and enzyme activity, studies were performed using different levels of mechanical agitation. The results …
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Formulation and preparation of niosomes containing bioactive compounds
… Niosomes were prepared by a two-stage technique: mechanical agitation followed by sonication. The niosomal formulations were evaluated in terms of their morphology, mean size, size distribution, stability, entrapment efficiency (EE), and in vitro RSV release. High speed mechanical agitation …
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Investigating the origin of localized plastic deformation in nanoporous gold by in situ electron microscopy and automatic structure quantification
… such as dealloying time, annealing time, and mechanical agitation. Through the expanded scope of synthesis experiments and detailed analysis, it was discovered that the curvature of the ligaments and the distribution width of ligament diameters could be controlled through processing. In situ …
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Development of the selective-shear coagulation process for ultrafine coal cleaning
… that additional specific energy provided by mechanical agitation was required to induce coagulation after grinding. However, additional mixing was found unnecessary in the case of tap water. A continuous selective-shear coagulation process using an elutriation column as the separator was …
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Spontaneous metal deposition from organic solutions for electronic materials applications
… in combination with ultrasonic or intensive mechanical agitation was necessary to activate the surface and enhance the metal deposition reaction. After seeding, continuous copper films were built up using a conventional electroless or electroplating process"--Abstract, page iv.</p>
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A fundamental study of the selective hydrophobic coagulation process
… reduction in size when a small amount of mechanical agitation was applied. Based on this outcome, quiescent continuous processes have been successfully designed and developed to separate the coagulated hydrophobic particles from the dispersed hydrophilic particles.
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Mixing, mass transfer and energy analysis across bioreactor types in microalgal cultivation and lipid production
… and considering surface aeration coupled with mechanical agitation as an alternative. An airlift photobioreactor was used as a base for comparison with two novel, surface aerated reactors: oscillatory baffled and wave photobioreactors. The three bioreactors were compared in terms of power …
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A Comparison of Cottage Cheese Yields Using Culture and Direct Acidification
… 75 for at least two reasons: 1) Larger vats and mechanical agitation had become wide spread, resulting in greater yield losses as curd fines; 2) The composition of the milk supply had changed, resulting in milk lower in solids (2). Of particular interest to cottage cheese manufacture was the …
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An electrochemical and leach study of the oxidative dissolution of chalcopyrite in ammoniacal solutions
… the oxidant. Leach reactors were designed to use agitation systems which promote the abrasion of an iron based deposit layer thought to passivate the mineral surface. Most research on the ammonia leaching systems has previously been carried out in controlled or bulk leaching studies and only a few …
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Protein stability: Impact of formulation excipients and manufacturing processes in protein-based pharmaceuticals
… filling (through pipes) can produce strong mechanical stresses on proteins. These stresses may cause the protein molecule to unfold, denature or aggregate. To improve stability upon formulation, they may be manufactured as freeze dried cakes that requires reconstitution with a buffer or …