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 11 of 11 for “"Mixing speed"”.
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Effect of conditioning on the performance of a plate and frame filter press
… to determine optimum polymer dosages for various mixing intensities produced during conditioning by a high-stress mixing unit. Mean velocity gradient (G) values were established for each of the mixing speeds used ranging from 250 sec-1 to 4,000 sec-1. Using the optimum conditioning dosages …
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Lipid Binding in Worked Wheat Flour Doughs
… lipid binding during the initial stages of dough mixing. Varying the moisture content of such doughs showed that there was a “critical” moisture content below which mechanical work did not cause any appreciable increase in lipid binding. Above this moisture content there was a very rapid binding …
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Development of High Efficiency Partial Nitrification as a First Step of Nitrite Shunt Process using Ammonium-Oxidizing Bacteria (AOB)
… using a constant air flow rate with a variable mixing speed using a Sequential Batch Reactor (SBR). The SBR has been successfully running at NLR of 1.2 kg/ (m3.d) maintaining an ammonia removal efficiency (ARE) of 98.6 ± 2.8% with a nitrite accumulation rate (NAR) of 93.0 ± 0.7%, which is 2 …
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Novel Carbopol-Wax Blends for Controlled Release Oral Dosage Forms
… as granulation temperature, granulation time and mixing speed. At higher granulation temperature, the granulation process became sensitive to granulation time and mixing speed. Thus, for developing robust granulation process to prepare carbopol-wax blends, the granulation must be done with lower …
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Laboratory studies using sodium-bearing waste simulant - ADL 26-94
… precipitation parameters such as impeller mixing speed, rate of base addition, amount of added calcium to SBW, and solution precipitation pH were studied to determine the conditions for each parameter to achieve optimal solids removal rates and resistance to filtration. The organic polymers …
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Partial nitrification and oxygen transfer analysis utilizing hollow fiber membrane aeration
… coefficient. Reactor parameters, such as mixing speed, membrane length, and gas pressure, were evaluated to determine how K<sub>L</sub>a was affected by these variables.y This hollow fiber membrane was then used to control oxygen delivery to the partial nitrification system, producing an …
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The preparation and characterization of stannous fluoride materials containing strontium
… as molar ratio, order of addition of reagents, mixing speed, time and temperature. The preparation of these materials is described here. The nature of the products was investigated by various analytical techniques, such as atomic absorption spectrophotometry, fluoride ion electrode analysis, …
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Mixing of nanoparticles in a stirred tank in high pressure carbon dioxide
Mixing of nanoparticles of different compositions offers wide opportunities in manufacturing new nanocomposite materials with unique electronic, optical, mechanical, and chemical properties. However, due to large cohesive forces between nanoparticles, they often form large micron-sized …
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Design and evaluation of hot melt extruded transdermal patches.
… parameters (temperature, heating duration and mixing speed) for preparing hot melt extruded compositions comprising ibuprofen (model drug) and various carrier excipients were established with minimal thermal degradation. Ibuprofen displayed a plasticizing effect enough to perform extrusion. HME …
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Laboratory studies of the biodegradation of chemically dispersed oil: effect of droplet size and nutrient amendment
… placed them on rotatory shakers. We selected two speeds: high (250 rpm) and low (125 rpm). We also added excess nutrient for some of the flasks to evaluate the role of nutrient. The experiments reflected the following situations: HSHN, HSLN, LSHN, and C, where HS and LS mean high (250 rpm) and low …
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Synthesis of monodisperse silver nanoparticles for antibacterial purposes
… better reproducibility, including vessel size, mixing speed, and rate of chemical addition. This work also showed that it is important to quantify the release of silver ions from silver nanoparticles before performing antibacterial efficacy assessments. Since silver ions are the most important …