• 한국해양공학회지
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• 제12권2호통권28호
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• pp.111-120
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• 1998

Laboratory settling experiments (column, recirculating flume) were conducted for further understanding of the physical processes of cohesive sediment transport. \In still water experiments, the growth rate of flocculation is dependent upon the initial suspended concentration. Consequently, the settling velocity increases with concentration of flees. In flocculation settling regime, the exponent n in the settling velocity, $w_s=kC^n$, for Nakdong estuary mud was obtained empirically. The exponents were found to be 1.33, and 1.06 for the initial suspended concentrations of 1 g/i and 3 g/t, respectively. In flowing water, experiments for the median settling velocity with Nakdong mud in a recirculating flume were conducted. Settling velocity was found to depend much more strongly on the current velocity than initial concentrations. The temporal variation of suspended concentration increases as current velocity decreases.

• Tuberculosis and Respiratory Diseases
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• 제46권1호
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• pp.136-141
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• 1999

저자 등은 만성적으로 반복되는 호흡기 감염 증상과 흉부 X-선 검사상 침윤 소견을 보여온 우폐중엽 증후군 환자에서 기관지경을 통해 기관지 폐쇄를 일으킨 이(泥)형질의 결석을 제거하였고, 여기에서 Aspergillus를 분리함으로써 확진된 Aspergillus에 의한 기관지 결석 1예를 경험하였기에 보고하는 바이다.