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PubMed · 13813743

A new flocculation test for differentiating obstructive from hepatocellular jaundice.

G K DAIKOS·P MATTHEOU·M ATHANASIADOU
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Flocculation TestsHumansJaundiceLiver DiseasesPorphyriasSerologic TestsJAUNDICE/diagnosisSERODIAGNOSISJournal Article

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G K DAIKOS, P MATTHEOU, M ATHANASIADOU. 1959-10-03. A new flocculation test for differentiating obstructive from hepatocellular jaundice.. https://doi.org/10.1016/s0140-6736(59)90608-7

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PubMed2006

A different approach for predicting reaeration rates in gravity sewers and completely mixed tanks.

A new semiempirical approach is presented for predicting air-to-water oxygen transfer rates in mixed tanks and gravity sewers, using methods adopted from mixing theory. First, a flocculation unit was used to impart selected mean velocity gradients (G) into a completely mixed tank, from which oxygen was first removed, and dissolved oxygen concentrations were measured with time. Regression analysis was used to fit the rate of oxygen transfer equation against G. The reaeration rate in completely mixed reactors was found to be proportional to G2 (R2 = 0.987). Subsequently, G was linked to headloss in sewers, and the equation was calibrated using a slope-adjustable, 27-m-long, gravity-flow, experimental sewer (internal diameter, D = 0.16 m). Here, the reaeration rate was proportional to G1 (R2 = 0.981). The equation was compared with existing oxygen transfer models and validated against experimental data from the literature, to which the overall mass transfer coefficient for oxygen, K(L)a, derived by the new approach, conformed well.

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