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Swimming bed combined with aerobic granular sludge as a novel technology for domestic sewage treatment was developed in this study, which was on the basis of the biofilm process and activated sludge process. The on-way variation of COD and NH4+-N was studied at different hydraulic retention time (HRT). The results show that the concentrations of COD and NH4+-N go down during the treatment flow, and...
Due to e-business's variety of customers with different navigational patterns and demands, multiclass queuing network is a natural performance model for it. The open multi-class queuing network (QN) models are based on the assumption that no service center is saturated as a result of the combined loads of all the classes. Several formulas are used to calculate performance measures, including throughput,...
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