Results 61 to 70 of about 624,231 (327)

Analytical and Numerical Results for the Diffusion-Reaction Equation When the Reaction Coefficient Depends on Simultaneously the Space and Time Coordinates

open access: yesComputation, 2023
We utilize the travelling-wave Ansatz to obtain novel analytical solutions to the linear diffusion–reaction equation. The reaction term is a function of time and space simultaneously, firstly in a Lorentzian form and secondly in a cosine travelling-wave ...
Ali Habeeb Askar   +3 more
doaj   +1 more source

Multiple Equilibria in a Single-Column Model of the Tropical Atmosphere

open access: yes, 2007
A single-column model run under the weak temperature gradient approximation, a parameterization of large-scale dynamics appropriate for the tropical atmosphere, is shown to have multiple stable equilibria.
A. H. Sobel   +21 more
core   +1 more source

Laser Remelting of a CrMnFeCoNi High‐Entropy Alloy: Effect of Energy Density on Elemental Segregation

open access: yesAdvanced Engineering Materials, EarlyView.
Laser remelting of a CrMnFeCoNi high‐entropy alloy reveals that optimal chemical homogenization occurs between 30 and 40 J·mm−2. Within this range, elemental segregation is reduced by over 30% compared to the as‐cast state. The study establishes this window as a fast, effective alternative to prolonged annealing for achieving uniform elemental ...
Ajay Talbot   +5 more
wiley   +1 more source

The Role of Wet Processes in Extratropical Thermal Stratification During the Glacial Period

open access: yesGeophysical Research Letters, 2023
In this study, we differentiate wet processes from dry processes in shaping the extratropical thermal stratification during the Last Glacial Maximum. Our findings indicate that even during the dry glacial period the influence of wet processes on thermal ...
Zhiang Xie, Li Dong, Kaijun Liu
doaj   +1 more source

The Role of the Gravitational Field in Generating Electric Potentials in a Double-Membrane System for Concentration Polarization Conditions

open access: yesMembranes, 2023
Electric potentials referred to as the gravielectric effect (∆ΨS) are generated in a double-membrane system containing identical polymer membranes set in horizontal planes and separating non-homogenous electrolyte solutions.
Kornelia Batko   +5 more
doaj   +1 more source

Convection in colloidal suspensions with particle-concentration-dependent viscosity

open access: yes, 2010
The onset of thermal convection in a horizontal layer of a colloidal suspension is investigated in terms of a continuum model for binary-fluid mixtures where the viscosity depends on the local concentration of colloidal particles.
A. Einstein   +36 more
core   +1 more source

Multimodal Characterization of Sn‐Bi Solder Alloy Solidification Using Synchrotron X‐Ray Microtomography and Energy Dispersive Diffraction

open access: yesAdvanced Engineering Materials, EarlyView.
Real‐time imaging and energy‐dispersive diffraction during solidification of Sn‐Bi alloy interconnect for electronic packaging applications are studied. Sn‐Bi solder alloys have generated significant interest in recent times due to their potential use in electronic packaging.
Amey Luktuke   +3 more
wiley   +1 more source

A Satellite Analysis: Comparing Two Medicanes

open access: yesAtmosphere
Morphological features of the Mediterranean Sea basin have recently been precursors to a significant increase in the formation of extreme events, in relation to climate change effects. It happens very frequently that rotating air masses and the formation
Giuseppe Ciardullo   +4 more
doaj   +1 more source

Efficient small-scale dynamo in solar convection zone

open access: yes, 2015
We investigate small-scale dynamo action in the solar convection zone through a series of high resolution MHD simulations in a local Cartesian domain with 1$R_\odot$ (solar radius) of horizontal extent and a radial extent from 0.715 to 0.96$R_\odot$. The
Hotta, H., Rempel, M., Yokoyama, T.
core   +1 more source

Convergence of adaptive mixed finite element method for convection-diffusion-reaction equations [PDF]

open access: yes, 2013
We prove the convergence of an adaptive mixed finite element method (AMFEM) for (nonsymmetric) convection-diffusion-reaction equations. The convergence result holds from the cases where convection or reaction is not present to convection-or reaction ...
Du, Shaohong, Xie, Xiaoping
core   +1 more source

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