کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4499599 | 1319037 | 2006 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Absorption by a moving spherical organelle in a heterogeneous cytoplasm: Implications for the role of trafficking in a symplast
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم کشاورزی و بیولوژیک (عمومی)
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چکیده انگلیسی
An organelle which absorbs (or secretes) a particular factor will find its mass transfer rate diffusion-limited if it is stationary with respect to its ambient cytoplasm; but organellar motion will raise that limit as a non-decreasing function of the Peclet number P. It is shown analytically that (i) no Whitehead paradox need be encountered in the creeping flow regime and (ii) the flux of the factor will be an even function of the Peclet number, P. By a novel analytic solution method, the flux is shown numerically to increase as P2 for Pâ²1. For Pâ³10, a quasi-planar approximating geometry yields analytically a flux which increases as P1/3. These two solutions overlap smoothly in the range 1â²Pâ²10. For Pâ1, convection should increase the mass flux by roughly 100%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Theoretical Biology - Volume 240, Issue 2, 21 May 2006, Pages 288-301
Journal: Journal of Theoretical Biology - Volume 240, Issue 2, 21 May 2006, Pages 288-301
نویسندگان
William F. Pickard,