中國醫藥大學機構典藏 China Medical University Repository, Taiwan:Item 310903500/29168
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    题名: Rotavirus associated with poliomyelitis-like syndrome
    作者: Chou, IC;Tsai, CH;Tsai, FJ
    贡献者: 附設醫院兒科部;China Med Coll Hosp, Dept Pediat, Taichung, Taiwan
    日期: 1998
    上传时间: 2010-09-24 14:25:03 (UTC+8)
    出版者: LIPPINCOTT WILLIAMS & WILKINS
    摘要: Nonequilibrium air-water mass transfer experiments for six volatile organic compounds (VOCs) were conducted using a bench-scale air sparging system. VOCs used were carbon tetrachloride, trichloroethylene, tetrachloroethylene, chloroform, dichloromethane, and toluene. The average particle size of the porous media used ranged from 0.278 to 1.71 mm. The air-water mass transfer coefficients were estimated by fitting the experimental data to a lumped parameter model. The model assumed that the saturated porous media under air sparging conditions consisted of two zones. In the "mass transfer" zone, VOCs were directly impacted by the how of air in the air channels, while in the "bulk water" zone, VOCs were not directly affected by the air flow in the air channels. The estimated air-water mass transfer coefficients (K(G)a) were found to increase for higher injected air flow rates and for larger mean particle sizes of porous media but were inversely proportional to the Henry's law constant of the VOCs. An empirical correlation was developed by correlating the Sherwood number with the Peclet number, the Henry's law constant, and the mean particle size of porous media. The estimated fraction (F) of the total volume of the porous media directly affected by air channels was between 5 and 20% for fine sand, indicating that a small fraction of the porous media was affected by the advecting air stream.
    關聯: PEDIATRIC INFECTIOUS DISEASE JOURNAL 17(10):930-931
    显示于类别:[台中附設醫院] 期刊論文

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