Results 221 to 230 of about 386,001 (265)
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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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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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Separation of liquids by mass diffusion
AIChE Journal, 1963AbstractMass diffusion studies were carried out in a diaphragm diffusion cell with the liquid system methyl alcohol, n‐propyl alcohol, isobutyl alcohol. Experiments were conducted over a wide range of separating agent counterflow. The separation factor was approximately doubled and the yield decreased three orders of magnitude when the counterflow was ...
F. O. Shuck, H. L. Toor
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The fundamentals of thermal-mass diffusion analogy
Microelectronics Reliability, 2015Abstract The fundamentals in thermal-mass diffusion analogy are developed and the misunderstandings are clarified. The continuity of the “wetness” or, more appropriately, the “fractional saturation”, w = C / C sat , is fundamentally proven using the equality principle of chemical potential.
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Mass flow, numerical dispersion and diffusion
1993If water containing dissolved salts (e.g. fertilizer) infiltrates into the soil, a gradual increase in salt concentration will be observed at a certain depth. The curve of the change in salt concentration against time at a certain depth is called the breakthrough curve. The rounded shape of this curve can partly be explained by diffusion of the salt in
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An asymptomatic diffuse palatal mass
Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, 2018Ahmed S, Sultan, Sook-Bin, Woo
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An Aggressive Diffuse Supraorbital Mass
JAMA Otolaryngology–Head & Neck Surgery, 2019Cang T, Nguyen +2 more
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Heat conduction and mass diffusion
1998In this chapter we will deal with steady-state and transient (or non steady-state) heat conduction in quiescent media, which occurs mostly in solid bodies. In the first section the basic differential equations for the temperature field will be derived, by combining the law of energy conservation with Fourier’s law.
Hans Dieter Baehr, Karl Stephan
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Mass Transfer by Diffusion and Convection
2018Transfer of mass, in the sense of chemical or biological species, is the third and last physical mechanism we encounter: with the analysis of diffusion and mass convection a preliminary outlook on transfer phenomena is completed. Strong similarities exist between heat and species transport: we will use our acquired knowledge to describe the species ...
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