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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 20 of 168 for “"High-shear"”.
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High shear viscometry of polymer solutions
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1961.
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High Shear Flow Properties of Nanocellulose
… such as injection molding subject materials to high temperatures and strain rates upwards of 100000 s-1. Thermal stability is a known challenge that can be increased via chemical modifications, but little is known about the effects of high or extended shear stresses typical of those experienced …
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MULTI-SCALE MODELING OF HIGH-SHEAR GRANULATION
High shear wet granulation is a particle design process used to increase the size of a primary powder material through the addition of liquid binder. This thesis focuses on the multi-scale nature of high-shear granulation in order to understand behavior changes due to coupled consolidation and …
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Resistance-in-series modeling in high-shear rotary ultrafiltration
… produced in the metal working (MW) industry. In high-shear rotary ultrafiltration (HSR-UF), disk membranes are rotated at speeds up to 1,750 rpm to generate hydraulic turbulence, which scours the membrane surface. Thus, the pump is required only to provide transmernbrane pressure and a small …
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High Shear Strain Characterization of Plain Weave Fiber Reinforced Lamina
… deployable structures have recently become of high interest to the deployable space structures community. Made out of thin composite sections, these structures possess increased stiffness and stabilization while reducing payload masses significantly. The added capability of self-deploying …
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Mechanical dispersion of semi-solid binders in high-shear granulation
… intermediate products. This thesis focuses on high shear wet granulation with the specific case study of detergent manufacture using a high shear pin mixer. The key rate process in detergent manufacturing was determined to be the mechanical dispersion of the semi-solid surfactant binder. The …
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Melt agglomeration with hydrophobic meltable binders in high shear mixer
… carried out on melt agglomeration process in high shear mixer using hydrophilic meltable binders such as polyethylene glycols, the findings are not fully applicable to hydrophobic meltable binders due to varying physicochemical properties of the latter than those of the former. The …
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Centrifuge modelling of high shear capacity ribbed piles in stiff clay
… step ahead of their competitors. The idea of the High Shear Capacity Ribbed Pile, whereby the construction of ribs along the length of the pile shaft might significantly increase the shaft capacity, has been considered by contractors in the past. Various tools with which to construct these ribs, …
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Fluid flow behavior of semi-solid aluminum at high shear rates
… data allowing calculations of viscosities at shear rates in excess of 1000 s-1. Alternatively, the DFV can be operated like a conventional parallel-plate compression viscometer, attaining shear rates as low as 10-5 s-1. Durations of an experiment range between approximately 5 ms and 24 hours. …
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Understanding the Role of Biomass and High Shear Bioreactor Parameters in Bioethanol Production
… the extruder. Advantages of extrusion are highs hear, rapid heat transfer, mixing, moderate temperature, short residence time, and adaptability to process modification - all in a continuous operation. Extrusion pretreatment does not require washing and conditioning steps, as are required in …
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A novel solvent-free high shear technology for the preparation of pharmaceutical cocrystals
High shear melt granulation (HSMG) is an established technology for a production of densified granules. In this project, it was used as a novel solvent-free method for the preparation of cocrystals. Cocrystals produced by HSMG were compared to those prepared by Hot Melt Extrusion (HME) to …
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Characterizing the Behavior of Magnetorheological Fluids at High Velocities and High Shear Rates
… is MR fluid devices for use in impact and other high velocity applications. In such applications, the fluid environment within the device may be well beyond the scope of our understanding for these fluids. To date, little has been done to explore the suitability of MR fluids in such high velocity …
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Use of the hole pressure data to obtain N1 at high shear rates for polymer melts
… of the hole pressure. The slit die was run at higher shear rates than those used by Pike. Both the tracer method and flow birefringence technique were applied to visualize the streamlines and stress field, respectively, in the slot region . Effects of the slot on the flow pattern and on the …
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Effect of High Shear on Anaerobic Digestion in an Anaerobic Membrane Bioreactor (Anmbr) Treating High Strength Wastewater
… reuse. In order to reduce membrane fouling, high shear rates are applied at the surface of the membrane in AnMBRs. However, this high shear may lead to (i) breakup of spatial interactions between hydrogen-producing syntrophic bacteria and their methanogenic partners, (ii) increased hydrolysis …
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Effects of feed oil content, transmembrane pressure and membrane rotational speed on permeate water quality in high-shear rotary ultrafiltration
… as increased permeate flux in the treatment of highly concentrated oily wastes.
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Effects of high shear deformation from equal channel angular pressing-conform and post thermal mechanical processing on the microstructural and mechanical properties of titanium alloys
Titanium with its high specific strength (i.e. high strength and low density), excellent biocompatibility, and corrosion resistance makes it suitable for aerospace, automotive, sporting, chemical processing equipment, and medical industries. For medical applications, commercial purity titanium, …
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Role of von Willebrand factor in shear induced platelet accumulation in a microfluidic device
Thrombus formation under high fluid shear rates at the site of atherosclerotic plaque rupture leads to myocardial infarction and stroke. At high shear rates, thrombus is formed by platelets adhering via the glycoprotein von Willebrand factor (vWF). To investigate the relative contributions of vWF …
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Optimisation of granola breakfast cereal manufacturing process by wet granulation and pneumatic conveying
… granola products were incorporated: a) a high shear mixing granulation process followed by drying/toasting in an oven. b) a continuous fluidised bed followed by drying/toasting in an oven. In high shear granulation the influence of process parameters on key granule aggregate quality …
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