Results 221 to 230 of about 48,160 (263)
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Metal Distribution and Stability in Constructed Wetland Sediment
Journal of Environmental Quality, 2006ABSTRACTThe A‐01 wetland treatment system (WTS) is a surface flow wetland planted with giant bulrush [Schoenoplectus californicus (C.A. Mey.) Palla] that is designed to remove Cu and other metals from the A‐01 National Pollution Discharge Elimination System (NPDES) effluent at the Savannah River Site near Aiken, SC. Copper, Zn, and Pb concentrations in
Anna Sophia, Knox +5 more
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Colloid Stability in Vadose Zone Hanford Sediments
Environmental Science & Technology, 2005We experimentally determined colloid stability of natural colloids extracted from vadose zone sediments from the U.S. Department of Energy's Hanford Reservation. We also used reference minerals, kaolinite, montmorillonite, and silica,for comparative purposes.
Szabolcs, Czigány +2 more
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A model of the effects of sedimentation rate on the stability of Mississippi Delta sediments
Geo-Marine Letters, 1993High sedimentation rates on the subaqueous delta of the Mississippi River create localized sediment instabilities that result in downslope movement through well-defined chutes or gullies. A simplified kinematic wave equation model that neglects second-order effects such as diffusion treats the failure mechanism as a sedimentation and slope ...
C. E. Adams, H. H. Roberts
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Advances on the Sedimentation Stability of Magnetorheological Fluids
2023Magnetorheological fluids (MRFs) have been widely applied to various engineering applications, especially in vibration isolation and shock mitigation systems because of their fast response time and continuously controllable actuating force (or torque) without moving parts.
Norman M. Wereley +4 more
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Evaluating Sediment Stability at Sites with Historic Contamination
Environmental Management, 2002The stability of cohesive sediment deposits during a rare storm is a critical component in the evaluation of remedial options at a contaminated sediment site. Estimating scour depths during a rare storm, and the resulting contaminant concentrations in the surficial layer of the bed, is necessary for comparing the efficacy of various remedial ...
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Mapping and monitoring contaminated-sediment geometry and stability
The Science of The Total Environment, 2001Environment Canada's National Water Research Institute (NWRI) conducts research on freshwater contaminated sediments, much of which is focused on designated areas of concern in the Great Lakes and their connecting channels. This paper reviews new acoustic and video equipment and procedures developed to map the geometry and stability of the sediments ...
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Effect of rotation on stability of suspended sediments
Physics of Fluids, 2000In this paper we consider the steady sedimentation of a uniform distribution of particles in a uniformly rotating liquid, and examine its stability by solving the set of conservation equations for a two-phase flow. The sixth order algebraic equation in the frequency which results from the perturbation equations is solved numerically. The effects of the
Chakraborty, B. +2 more
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Stabilization/solidification of contaminated marine sediment
2022This contribution aims to describe the latest research on the application of SS treatments to contaminated marine sediments with both inorganic and mixed organic/inorganic compounds. The intent is to show how SS is not only a remediation technology, but a medium to enable recovery, recycling, and reuse of contaminated marine sediments.
Sabino De Gisi +3 more
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Stability of free surface sediment flow
Journal of Geophysical Research: Oceans, 1990Observations of unusual surface level oscillations on the sediment‐laden Yellow River of China, have led to the suggestion that the oscillations arise from a free surface instability peculiar to fluids having the constitutive relation of a Bingham plastic (i.e., possessing a finite yield stress). A model has been proposed in which free surface flows of
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Stability of unconsolidated sediments and acoustic transmission.
The Journal of the Acoustical Society of America, 2011The degree of compaction in marine sediments has a direct effect on their velocity and density, components in the Navy’s geoacoustic databases. Acoustic transmission through sediments necessitates grain-to-grain contact. Such a conceptual model coincides with geology of sediments settling onto seafloor to consolidation as generally continuous. However,
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