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Studies on Utilization for Ornamental Plants of Veronica ornata Monjuschko Native in Oki Islands, Shimane, Japan
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Studies on the application of long-lasting flower trait (misome-shō) for breeding in evergreen azalea
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Harnessing genetic diversity of the wild emmer wheat (Triticum turgidum ssp. dicoccoides) for wheat breeding
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A model of micro lubrication between two walls with unequal temperature distribution based on kinetic theory
Get PDFMicro lubrication of a gas between two walls with arbitrary and independent temperature distributions is studied on the basis of the Bhatnagar–Gross–Krook–Welander (BGKW) model of the Boltzmann equation. The BGKW equation is studied analytically using the slowly varying approximation. Following the author's previous study [T. Doi, “A model of micro lubrication between two walls with an arbitrary temperature difference based on kinetic theory,” Phys. Fluids 32, 052005 (2020)], the leading-order approximation, which ought to be the solution of the nonlinear heat transfer problem, is replaced by its free molecular solution. A lubrication model of the Reynolds-type equation is derived in closed form. A direct numerical analysis of the lubrication flow subject to localized heating or cooling of the walls is conducted for an assessment of the lubrication model. The lubrication lift calculated using the model agrees with that of the direct numerical solution within an error of 5% when the Knudsen number based on the gap size lies between 0.1 and 10. The result of the lubrication model agrees also with that of the Boltzmann equation for a variable hard sphere gas. A sharp peak arises in the pressure distribution for large Knudsen numbers owing to the effect of thermal creep flows induced by localized heating
Dark rearing promotes the recovery of visual cortical responses but not the morphology of geniculocortical axons in amblyopic cat
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Studies on the cultivating method to achieve high yield and quality in wheat cultivars for bread by intensive nitrogen fertilization during stem elongation
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