21 research outputs found
Modelling of stable isotope fractionation by methane oxidation and diffusion in landfill cover soils
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Improved quantification of methane oxidation in landfill cover soils by numerical modeling of stable isotope fractionation
No full textModelling of stable isotope fractionation by methane oxidation and diffusion in landfill cover soils
No full textPBM AND ACTIVATED SLUDGE FLOCCULATION: FROM EXPERIMENTAL DATA TO A CALIBRATED MODEL
No full textAbstract: A calibration methodology is presented for a Population Balance Model (PBM) using on-line flocculation data. The moving pivot discretisation technique is preferred to solve the PBM. A methodology for grid transformation and volume to number transformation is presented. Model fits on volume-based fitting variables fit the middle part of both the vol % and number distribution better, but under predict (30x) the smaller size classes. Model fits on number-based fitting variables fit the small size classes better, though still under predicting them (2x). For the application at hand, it is concluded that the model should be fitted to the number distribution. However, the improved methodology pointed out that the model lacks flexibility to adequately describe the data. Copyright © 2004 IFAC
Prospective multicenter comparison of urine culture with PCR on dried blood spots using 2 different extraction and PCR methods in neonates suspected for congenital cytomegalovirus infection
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