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  2. Sedimentation coefficient - Wikipedia

    en.wikipedia.org/wiki/Sedimentation_coefficient

    The sedimentation coefficient is typically dependent on the concentration of the solute (i.e. a macromolecular solute such as a protein). Despite 80+ years of study, there is not yet a consensus on the way to perfectly model this relationship while also taking into account all possible non-ideal terms to account for the diverse possible sizes, shapes, and densities of molecular solutes. [2]

  3. Hjulström curve - Wikipedia

    en.wikipedia.org/wiki/Hjulström_curve

    The critical velocity for deposition, on the other hand, depends on the settling velocity, and that decreases with decreasing grainsize. The Hjulström curve shows that sand particles of a size around 0.1 mm require the lowest stream velocity to erode. The curve was expanded by Åke Sundborg in 1956.

  4. Svedberg - Wikipedia

    en.wikipedia.org/wiki/Svedberg

    A laboratory ultracentrifuge. In chemistry, a Svedberg unit or svedberg (symbol S, sometimes Sv [a]) is a non-SI metric unit for sedimentation coefficients.The Svedberg unit offers a measure of a particle's size indirectly based on its sedimentation rate under acceleration (i.e. how fast a particle of given size and shape settles out of suspension). [1]

  5. Analytical ultracentrifugation - Wikipedia

    en.wikipedia.org/wiki/Analytical_ultracentrifugation

    Sedimentation velocity experiments render the shape and molar mass of the analytes, as well as their size-distribution. [2] The size resolution of this method scales approximately with the square of the particle radii, and by adjusting the rotor speed of the experiment size-ranges from 100 Da to 10 GDa can be covered.

  6. Differential centrifugation - Wikipedia

    en.wikipedia.org/wiki/Differential_centrifugation

    Sedimentation depends on mass, shape, and partial specific volume of a macromolecule, as well as solvent density, rotor size and rate of rotation. The sedimentation velocity can be monitored during the experiment to calculate molecular weight. Values of sedimentation coefficient (S) can be calculated. Large values of S (faster sedimentation ...

  7. Sediment transport - Wikipedia

    en.wikipedia.org/wiki/Sediment_transport

    For particles with a small settling velocity, diffusion will increase the complexity of the particle's path to the bottom and the time it takes to settle compared to particles with high settling velocities. The settling velocity (also called the "fall velocity" or "terminal velocity") is a function of the particle Reynolds number.

  8. Lamm equation - Wikipedia

    en.wikipedia.org/wiki/Lamm_equation

    The first and second terms on the right-hand side of the Lamm equation are proportional to D and sω 2, respectively, and describe the competing processes of diffusion and sedimentation. Whereas sedimentation seeks to concentrate the solute near the outer radius of the cell, diffusion seeks to equalize the solute concentration throughout the cell.

  9. Bedform - Wikipedia

    en.wikipedia.org/wiki/Bedform

    This chart is for general use, because changes in grain size and flow depth can change the bedform present and skip bedforms in certain scenarios. Bidirectional environments (e.g. tidal flats) produce similar bedforms, but the reworking the sediments and opposite directions of flow complicates the structures.