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As one of the most important variables of topography, the quality of extracting slope length has a serious effect on soil and water conservation, soil erosion and environmental assessment studies. Based on the principle of data independent DEM interpretation analysis method, this paper quantitatively studies the error spatial distribution of slope length which is extracted from grid-based Digital...
Watering is the main measure to restrain wind-blown particulate emissions and sound spay parameters heavily rely on the quantitative understand of the effect of mine surface moisture on the wind-blown particulate emissions. The tunnel experiment was carried out in the paper, to investigate the threshold friction velocity of each diameter particulate on the base of the explicit definition the method...
In order to study the effect of saw powder on reducing leachate production, accelerating degradation of rubbish, COD and NH3-N concentration of leachate, three cylinder reactors for anaerobic landfill disposal were built to simulate the operation of landfill. In the experiment, leachate quantity, settling height of rubbish layer, COD and NH3-N concentration were monitored. The results come from experiment...
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