نتایج جستجو برای: countercurrent imbibition
تعداد نتایج: 3175 فیلتر نتایج به سال:
The wharf roach Ligia exotica is a small animal that lives by the sea and absorbs water from the sea through its legs by virtue of a remarkable array of small blades of micron scale. We find that the imbibition dynamics on the legs is rather complex on a microscopic scale, but on a macroscopic scale the imbibition length seems to simply scale linearly with elapsed time. This unusual dynamics of...
We report a microchip-based method for separating charged molecules according to electrophoretic mobility. The method is based on opposed electroosmotic, electrophoretic and convective forces. Similar to isoelectric focusing, solute can be accumulated into stationary zones, but without use of ampholytes. The method of "microchip countercurrent electroseparation" described here has potential app...
This article is an attempt to simplify lecturing about the osmotic gradient in the kidney medulla. In the model presented, the kidneys are described as a limited space with a positive interstitial hydrostatic pressure. Traffic of water, sodium, and urea is described in levels (or horizons) of different osmolarity, governed by osmotic forces and positive interstitial pressure. In this way, actio...
Application of lower hybrid (LH) current drive in tokamak plasmas can induce both co- and countercurrent directed changes in toroidal rotation, depending on the core q profile. For discharges with q(0) <1, rotation increments in the countercurrent direction are observed. If the LH-driven current is sufficient to suppress sawteeth and increase q(0) above unity, the core toroidal rotation change ...
Ionic liquids can form biphasic solvent systems with many organic solvents and water, and these solvent systems can be used in liquid-liquid separations and countercurrent chromatography. The wide range of ionic liquids that can by synthesised, with specifically tailored properties, represents a new philosophy for the separation of organic, inorganic and bio-based materials. A customised counte...
The type of solid substrate plays a critical role in determining the kinetics spray fluidized bed (SFB) agglomeration process. In case porous (also soft) primary particles (PPs), droplet aging is due to imbibition and drying. surface properties also change imbibition. focus present work simulate spray-dried milk powder using Monte Carlo (MC) method coupled with drying-imbibition model. order ex...
“Fracturing network+imbibition oil production” is a new attempt to effectively develop low-permeability tight reservoirs. Fracturing fluid not only carrier for sand carrying but also tool in the process of imbibition. On basis imbibition experiments, combined with nuclear magnetic resonance and pseudo-color processing technology, this paper clarified dominant forces different types pore-throat ...
This work introduces capillary flow in paper microfluidics that features a flow rate Q that is constant in time, t, and independent of the viscosity of liquid sample, µ liquid : Q≠f(t, µ liquid). Compared to conventional paper microfluidics, we enclose the paper in solid walls and add a long and narrow air vent as outlet of the capillary pump, such that the flow rate is dominated by the downstr...
Water uptake of seeds of Phaseolus vulgaris L. cv Limburg was monitored in a controlled atmosphere every day at solar noon for a period of 2 years. The imbibition rate, determined as the mean of five replicas, was related to the lunar cycle, maximal water uptake occurring between the new phases of the cycle. The monthly mean value of imbibition rate, calculated from the daily measurements, disp...
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