Results 311 to 320 of about 929,200 (373)
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Biotechnology and Bioengineering, 1998
Experimental measurements of effective diffusive permeabilities and effective diffusion coefficients in biofilms are reviewed. Effective diffusive permeabilities, the parameter appropriate to the analysis of reaction-diffusion interactions, depend on solute type and biofilm density.
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Experimental measurements of effective diffusive permeabilities and effective diffusion coefficients in biofilms are reviewed. Effective diffusive permeabilities, the parameter appropriate to the analysis of reaction-diffusion interactions, depend on solute type and biofilm density.
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Effects of Fiber Shapes on Moisture Diffusion Coefficients
Journal of Reinforced Plastics and Composites, 1993Diffusion coefficient is an important parameter used for theoretical estima tion of moisture content in a body when it is exposed to a moist environment. The diffu sion coefficient of FRP materials usually depends on several parameters, such as the diffusivities of constituents, fiber volume fraction, moisture concentration of the environ ment, and ...
P.K. Aditya, P.K. Sinha
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Experimental system to evaluate the effective diffusion coefficient of radon
Review of Scientific Instruments, 2009The effective diffusion coefficient of radon is a very important factor in estimating the rate of radon exhalation from the ground surface. In this study, we developed an experimental system that overcomes technical problems in previous studies to accurately evaluate the effective diffusion coefficient.
Masahiro Hosoda +7 more
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, 2012
Dissolved oxygen (DO) plays an important role in biological wastewater treatment. The DO concentration in a biofilm interior, which is controlled by its effective diffusion coefficient, determines the biochemical reaction rate.
Yun-Fang Ning +7 more
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Dissolved oxygen (DO) plays an important role in biological wastewater treatment. The DO concentration in a biofilm interior, which is controlled by its effective diffusion coefficient, determines the biochemical reaction rate.
Yun-Fang Ning +7 more
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Consistent measurement of diffusion coefficients for effectiveness factors
Chemical Engineering Science, 1980Abstract An examination has been made of how structural factors influence the measured values of effective diffusivity using the steady(Wicke-Kallenbach) and unsteady (chromatographic) state methods. For a solid with a typical bidisperse pore size distribution it is shown that the steady state method tends to give longer values.
C. McGreavy, M.A. Siddiqui
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Compaction Effect on the Gas Diffusion Coefficient in Soils
Soil Science Society of America Journal, 1992AbstractGas diffusion is important in determining the aeration status of soils for crop production and in providing estimates of transport of volatile chemicals at waste disposal or chemical spill sites. This study investigated the effects of compaction on the gas diffusion coefficient in four soils.
John L. Nieber +2 more
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, 2012
A multiscale model is established for effective diffusion coefficient of chloride ions in cement-based composite materials. The model takes into account the relationship between the diffusivity and microstructure of cement-based materials, where the ...
Guowen Sun +3 more
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A multiscale model is established for effective diffusion coefficient of chloride ions in cement-based composite materials. The model takes into account the relationship between the diffusivity and microstructure of cement-based materials, where the ...
Guowen Sun +3 more
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Modeling and experiment for effective diffusion coefficient of gas in water-saturated coal
, 2021Leilei Si +4 more
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Evaluation of ligand-selector interaction from effective diffusion coefficient.
Analytical Chemistry, 2010We present an analytical technique for determination of ligand-selector equilibrium binding constants. The method is based on the measurements of effective molecular diffusion coefficient of the ligand during Poiseuille flow through a long (approximately
A. Bielejewska +4 more
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