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In this paper, a theoretical model is established, which describes the motion of the specimen of the ultrasonic feeding device. By using this model, the nonlinear contact force between the specimen and the oscillator, the tangential displacement and the tangential velocity of the specimen can be calculated, and then tangential motion and the normal motion of the specimen can be analyzed. Finally,...
This study attempted to find the adsorption law of fly ash to COD in domestic sewerage. After the elementary characterization of fly ash was described, the influence of contact time, sorbent concentration, and different pretreatment ways of fly ash, initial COD concentration and temperature on the adsorption process was investigated. Results showed adsorption equilibrium attained within 120 min time...
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