Sediment Transport
Sediment Transport - Related Videos
07:53
Actin Co-Sedimentation Assay; for the Analysis of Protein Binding to F-Actin
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Cited by 18 •
2008
Proteins bind to filamentous actin (F-actin) through distinct actin binding modules. In this video we demonstrate the procedure of actin co-sedimentation, which is an in vitro assay routinely used to analyze proteins or specific domains that bind F-actin.
08:04
Soxhlet Extraction of Lipid Biomarkers from Sediment
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2023
Source: Laboratory of Jeff Salacup - University of Massachusetts Amherst Every lab needs standards that track the performance, accuracy, and precision of its instruments over time to ensure a measurement made today is the same as a measurement made a year from now (Figure 1). Because standards must test the performance of instruments over a long period of time, large volumes of the standards are often required. Many chemical standards can be purchased from retail scientific companies, like...
07:24
Sonication Extraction of Lipid Biomarkers from Sediment
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2023
Source: Laboratory of Jeff Salacup - University of Massachusetts Amherst The material comprising the living "organic" share of any ecosystem (leaves, fungi, bark, tissue; Figure 1) differs fundamentally from the material of the non-living "inorganic" share (rocks and their constituent minerals, oxygen, water, metals). Organic material contains carbon linked to a series of other carbon and hydrogen molecules (Figure 2), which distinguishes it from inorganic material. Carbon's wide valency range...
06:17
Measuring Protein Binding to F-actin by Co-sedimentation
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Cited by 18 •
2017
This protocol describes a method to test the ability of a protein to co-sediment with filamentous actin (F-actin) and, if binding is observed, to measure the affinity of the interaction.
12:50
Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds
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Cited by 3 •
2017
With the advancement of technology and the rise in end-user expectations, the need and use of higher temporal resolution data for pollutant load estimation has increased. This protocol describes a method for continuous in situ water quality monitoring to obtain higher temporal resolution data for informed water resource management decisions.
FAQs
Flowing water applies boundary shear stress to the channel bed. Particles begin moving when this fluid force exceeds the resistance holding them in place, allowing soil, sand, silt, gravel, or other sediment to become entrained. This threshold is important because it marks the transition from a stable bed to active erosion and sediment movement in an engineered channel.
The moving particles can follow different transport paths within a channel. Bed load travels along the channel bed, while suspended material is carried within the flowing water. Distinguishing these modes helps engineers evaluate where particles may remain near the bed, where they may move through the water column, and how changing flow conditions could alter sediment distribution.
Deposition occurs when flow conditions change so that the moving water no longer carries particles in the same way. Sediment can then settle or accumulate, affecting the channel bed, reservoir capacity, or navigation depth. Identifying likely deposition zones helps engineers anticipate sedimentation and evaluate how changing bed geometry may influence hydraulic-system performance.
Engineers relate fluid forces, particle movement, erosion, and deposition to the behavior of nearby infrastructure. The analysis can support predictions of riverbed erosion, channel migration, and reservoir sedimentation, as well as stability assessments for bridges, dams, pipelines, and navigation channels. These results help identify sediment-related risks before they compromise hydraulic performance or structural reliability.
Sediment transport analysis addresses both natural and built-environment concerns. It can help predict erosion of riverbeds, movement of channels, changes along coasts, and accumulation in reservoirs. Engineers also apply it to navigation channels and to the performance of bridges, dams, and pipelines. These predictions provide a basis for erosion control, habitat management, and hydraulic planning.
Designers use sediment behavior to account for changing beds, transported particles, and zones of erosion or deposition. This perspective supports measures for erosion control and helps evaluate whether bridges, dams, pipelines, and navigation channels can remain stable as sediment conditions change. It also connects infrastructure decisions with habitat management and the broader effects of landscape change.