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 4 of 4 for “"pressure screening"”.
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Pressure screening studies with wood pulp
Pressure screening is used in paper making to separate components of a wood pulp slurry (water, wood fibre and solid contaminant material) and to concentrate the wood fibre. The complex solid-liquid and solid-solid mechanisms involved in pressure screening are still poorly understood. This thesis …
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Insight on the effect of contour height in pressure screening
… British Columbia (UBC) using a laboratory scale pressure screen. Slot velocity, feed consistency and contour height were the changing variables. Samples were collected from which passage ratio, freeness, fibre length and coarseness were determined. From the studies conducted it was found that …
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Improving recognition of hypertension in pediatric primary care
… due to the complexity of diagnosis. Blood pressure reference ranges vary according to a child's age, sex, and height, and diagnosis requires multiple measurements from multiple encounters. These factors, combined with the challenges of implementing appropriate blood pressure measurement …
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Axial variations and entry effects in a pressure screen
Pressure screens are used for contaminant removal and fibre length fractionation in the production of pulp and paper products. Axial variations and entry effects in the screen are known to occur and these variations have not been adequately quantified. This thesis describes a fundamental study of …