Drag Coefficients
Mostrando 25-29 de 29 artigos, teses e dissertações.
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25. Apoplasmic and Protoplasmic Water Transport through the Parenchyma of the Potato Storage Organ.
Stationary volume fluxes through living and denatured parenchyma slices of the potato (Solanum tuberosum L.) storage organ were studied to estimate the hydraulic conductivity of the cell wall and to evaluate the significance of water transport through protoplasts, cell walls, and intercellular spaces. Slices were placed between liquid compartments, steady-st
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26. The role of hydrodynamic interaction in the locomotion of microorganisms.
A general Boundary Element Method is presented and benchmarked with existing Slender Body Theory results and reflection solutions for the motion of spheres and slender bodies near plane boundaries. This method is used to model the swimming of a microorganism with a spherical cell body, propelled by a single rotating flagellum. The swimming of such an organis
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27. Fitness Landscapes for Effects of Shape on Chemotaxis and Other Behaviors of Bacteria
Data on the shapes of 218 genera of free-floating or free-swimming bacteria reveal groupings around spherical shapes and around rod-like shapes of axial ratio about 3. Motile genera are less likely to be spherical and have larger axial ratios than nonmotile genera. The effects of shape on seven possible components of biological fitness were determined, and a
American Society for Microbiology.
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28. Force and Velocity of Mycoplasma mobile Gliding†
The effects of temperature and force on the gliding speed of Mycoplasma mobile were examined. Gliding speed increased linearly as a function of temperature from 0.46 μm/s at 11.5°C to 4.0 μm/s at 36.5°C. A polystyrene bead was attached to the tail of M. mobile using a polyclonal antibody raised against whole M. mobile cells. Cells attached to beads glide
American Society for Microbiology.
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29. Geometric and viscous components of the tortuosity of the extracellular space in the brain
To understand the function of neuro-active molecules, it is necessary to know how far they can diffuse in the brain. Experimental measurements show that substances confined to the extracellular space diffuse more slowly than in free solution. The diffusion coefficients in the two situations are commonly related by a tortuosity factor, which represents the in
The National Academy of Sciences.