river sediment

The sediment size changes sharply in two reaches of the middle and lower Yangtze River. Sediment type changes from gravel into sand in one zone, and another from sand into mud.

长江中下游河床沉积物在两个河段出现了粒径的急剧变化和沉积物类型的转换，一个是从砾石转变为砂，另一个是从砂转变为泥。

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the clogging of river sediment flow is a serious environmental problem.

河流泥沙淤积是一个严重的环境问题。

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Particle-size effects of heavy metal release from Wei River sediment

渭河沉积物中重金属释放的粒度效应

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The paper analyzes and calculates the sediment coming from the sea by utilizing the observed hydrological and tidal data of the Yellow River estuary.

利用黄河口实测水文及潮汐资料分析计算了海向来沙情况。

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During the operation of storing water and retaining sediment, serious deposition in the reservoir leads to backwater level rising rapidly. Therefore it also brings out new river-trained theory of design sediment load and integrated regulation of water-sediment.

开始蓄水拦沙运用，水库严重淤积回水迅速上延，引发设计输沙量和水沙综合调节治河新理论。

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The Hg, Pb, Zn average contents in sediment of Wuli River which was contaminated by chlor-alkali were 663,3.21, 5.51 times as high as the regional sediment background value, respectively.

结果表明：源于氯碱厂Hg污染的五里河沉积物中Hg，Pb，Zn含量平均值分别超过区域沉积物背景值662,2.21,4.51倍；

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Acid-volatile sulfide in river sediment sample was measured by reaction headspace.

采用顶空色谱测定了河流底泥中的可酸挥发硫化物.

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acid-volatile sulfide in river sediment sample was measured by reaction headspace .

采用顶空色谱测定了河流底泥中的可酸挥发硫化物。

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fractal dimension of bridging flocculated aggregates for yellow river sediment

黄河泥沙架桥絮凝聚集体的分形

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Analysis on Variation Characteristics and Tendency of Runoff and Sediment at Different Time-scale in Dali River Basin

大理河流域不同时间尺度水沙变化影响因素及趋势研究

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Study on Behavior and Mechanism of the Nutrient Release from Urban River Sediment at Plain River Network Area

平原河网区城市河道底质营养盐释放行为及机理研究

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Analysis on characteristics of current and sediment movement in Humen estuary of Pearl River during spring tide in flood season

珠江口虎门水域洪季大潮的水沙特点分析

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denitrifying bacteria isolated from river sediment and its nitrogen and phosphorus removal capacity from river water

河流沉积物中反硝化细菌的分离及脱氮除磷研究

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For the lower reaches of the Yangtze River and River sediment from the Gulf Sekou weir.

为长江和钱塘江下游泥沙堰塞古海湾而成.

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Analysis on flow and sediment movement in approach channels of tidal river branches

感潮河段船闸下引航道水沙运动及泥沙淤积

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Characteristics of Heavy Metal Pollution in a River Sediment in Chongming Island and its Potential Risk Evaluation for Agricultural Utilization

崇明岛典型河道底泥重金属污染及农用潜在风险评价

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On the basis of the stressing features of sediment particles on the river bed surface, the probability distribution of instantaneous initiation moment of sediment particles' motion was deduced to be a normal distribution.

根据位于床面上泥沙颗粒的受力特点，取各力力臂为常量，推导得到泥沙颗粒瞬时起动力矩的概率分布为正态分布。

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study on the mathematical model of river sediment

河流泥沙数学模型的研究分析

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kinetics of anaerobic degradation of lindane in liaohe river sediment

高丙体六六六在辽河沉积物中的缺氧降解动力学

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Numerical Modeling of Flow and Sediment Transports in Tidal River Networks

感潮河网区水沙运动的数值模拟感潮河网引水增流水力水质计算及河道糙率优化

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The result shows that the sediment resource of the Laizhou gulf is made up of the Yellow River mouth sandspit and the Laizhou shoal, which origin from the Yellow river sediment and the river sediment of the north-west Shandong peninsula.

结果表明，莱州湾泥沙资源主要包括黄河口沙嘴和莱州浅滩两部分，分别来源于黄河和山东半岛西北部河流输沙。

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Study on the Effects of Human Activities on River Sediment Load in Tianshui City

人类活动对天水市河流泥沙影响的研究

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