Results 241 to 250 of about 1,315,304 (299)
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Mass and Thermal Diffusivity Algorithms
Annals of the New York Academy of Sciences, 2002Abstract: Mass and thermal diffusivity measurements conducted on Earth are prone to contamination by uncontrollable convective contributions to the overall transport. Previous studies of mass and thermal diffusivities conducted on spacecraft have demonstration the gain in precision, and lower absolute values, resulting from the reduced convective ...
R Michael, Banish +4 more
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An Infant with Diffuse Lung Masses
Clinical Pediatrics, 2009Chronic granulomatous disease presenting as invasive pulmonary aspergillosis in an infant is described in this report. Symptoms of chronic, intermittent respiratory distress had been previously attributed to gastroesophageal regurgitation and asthma. The isolation of an unusual pathogen even from a nonsterile site, particularly when symptoms persist ...
Miltiadis, Douvoyiannis +2 more
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Turbulent mixing with physical mass diffusion
Physical Review E, 2006Simulated mixing rates of the Rayleigh-Taylor instability for miscible fluids with physical mass diffusion are shown to agree with experiment; for immiscible fluids with physical values of surface tension the numerical data lie in the center of the range of experimental values.
Xinfeng, Liu +3 more
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Advances in Space Research, 1988
Abstract Dimensionless number analysis indicates that diffusion-controlled conditions with liquid samples having characteristic dimensions larger than one millimetre can only be established under microgravity conditions. Consequently, heat and mass transport properties of fluids can only be quantitatively investigated in space.
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Abstract Dimensionless number analysis indicates that diffusion-controlled conditions with liquid samples having characteristic dimensions larger than one millimetre can only be established under microgravity conditions. Consequently, heat and mass transport properties of fluids can only be quantitatively investigated in space.
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Stability of mass action reaction–diffusion systems
Nonlinear Analysis: Theory, Methods & Applications, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mincheva, Maya, Siegel, David
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1987
Since diffusion and convection in melts play a significant role in most processes involving fluids, there has been an increasing interest to understand the underlying mechanisms and to obtain accurate data on these properties. Unfortunately all terrestrial experiments are degraded by gravity-driven flow, which makes it virtually impossible to carry out
Y. Malmejac, G. Frohberg
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Since diffusion and convection in melts play a significant role in most processes involving fluids, there has been an increasing interest to understand the underlying mechanisms and to obtain accurate data on these properties. Unfortunately all terrestrial experiments are degraded by gravity-driven flow, which makes it virtually impossible to carry out
Y. Malmejac, G. Frohberg
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Mass Diffusion in Process Metallurgy
Diffusion Foundations, 2015Diffusion phenomena are of great importance in materials processing wherein atomic, molecular or ionic species are distributed within a phase or among different phases. Though the phenomenological equation describing the diffusion phenomena including the bulk flow arising out of diffusion in fluid and the phenomena of Kirkendall shift in substitutional
Viswanathan Neelakantan Nurni +2 more
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Experimental measure mass diffusion transparency
Solid State Communications, 2014Abstract Based on the concept of electromagnetic wave transparency in electromagnetic material, we proposed the concept of mass diffusion transparency. The mass diffusion transparency means that the trajectory of diffusion matter is not perturbed by neutral inclusion.
Lunwu Zeng +3 more
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Effective Mass Diffusivity in Composites
Journal of Composite Materials, 2002Gas diffusion is important in composite manufacturing, while moisture diffusion is important for composite performance. In this study, analytical models are developed to predict the mass diffusivity of both square and hexagonal arrays of cylindrical cylinders.
Shoujie Li, L. James Lee, Jose Castro
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2013
Diffusion is the transport of material due to concentration gradients or more precisely due to gradients in the chemical potential. Mass transfer is commonly described as diffusional phenomena in the presence of convective motion. Diffusion and mass transfer play a significant role in many materials processing operations.
Manabu Iguchi, Olusegun J. Ilegbusi
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Diffusion is the transport of material due to concentration gradients or more precisely due to gradients in the chemical potential. Mass transfer is commonly described as diffusional phenomena in the presence of convective motion. Diffusion and mass transfer play a significant role in many materials processing operations.
Manabu Iguchi, Olusegun J. Ilegbusi
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