Gang-Wook Shin

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1Myung Geun Chun
1Sang-Bok Jang
1Dae-Jong Lee
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Ultrasonic concentration meters have widely been used at water purification, sewage treatment and waste water treatment plants to sort and transfer high concentration sludges and to control the amount of chemical dosage. When an unusual substance is contained in the sludge, however, the attenuation of ultrasonic waves could be increased or not be(More)
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