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Feeds are user-generated contents or actions in online social network (OSN). Users generate feeds for self-expression and view feeds generated by friends. In this paper, we try to analyze activities of users in one OSN by exploring two aspects: whether users are becoming inactive in generating feeds, and how these inactive users affect the feeds received by other users and thus cause collapse of the...
Three-stage catching bed reactor was used to treat domestic wastewater from residential area through the step feed in order to get high efficiency of simultaneous nitrification denitrification(SND). The effect of 3 influent flow rate distribution ratios (λ) on the removal of COD, NH4+-N and TN was investigated under the conditions of hydraulic retention time (HRT)=8h, DO=1.0∼2.0mg/L and sludge reflux...
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