Results 81 to 90 of about 111,699 (262)

Three level implicit tension spline scheme for solution of Convection-Reaction-Diffusion equation

open access: yesAin Shams Engineering Journal, 2018
In this work, the numerical approximation of Convection-Reaction-Diffusion equation is investigated using the method based on tension spline function and finite difference approximation.
H.S. Shekarabi, J. Rashidinia
doaj   +1 more source

On the nonnegatibity of solutions of reaction diffusion equations

open access: yesRocky Mountain Journal of Mathematics, 1987
Consider the system of reaction diffusion equations \[ \partial u/\partial t=A\Delta u+f(u,\nabla_ xu,x,t)\quad (*) \] where A is a \(p\times p\) matrix, u(x,t) is a p-dimensional vector with components \(u^{(j)}(x,t)\), \(j=1,...,p\) and where \((x,t)\in {\mathbb{R}}^ n\times (0,\infty)\).
openaire   +2 more sources

Impact of the Process Atmosphere During Hot Isostatic Pressing on the Near‐Surface Composition of an Additively Manufactured Austenitic High‐Interstitial Steel

open access: yesAdvanced Engineering Materials, EarlyView.
A high interstital austenitic steel is additively manufactured and postdensified by HIP to eliminate gas porosity. Thereby, the loss of N and Mn in Ar HIP atmosphere is investigated. Further, HIP using N2 atmosphere is investigated which led to excessive nitride formation.
F. Großwendt   +4 more
wiley   +1 more source

Particle Systems and Reaction-Diffusion Equations

open access: yesThe Annals of Probability, 1994
Consider the particle system with spin space \(\{0,1\}\) on \(S=\varepsilon{\mathbb{Z}}^ d\quad (\varepsilon>0)\). At each site \(x\), the death \((t\to 0)\) rate is fixed to be 1 and the birth \((0\to 1)\) rate depends on a finite range with parameter \(\beta>0\).
Durrett, R., Neuhauser, C.
openaire   +3 more sources

Anticorrosive Performance of Smart Epoxy Coatings With Poly(urea‐formaldehyde) Microcapsules Filled With 5‐Ethylidene‐2‐norbornene

open access: yesAdvanced Engineering Materials, EarlyView.
PUF/ENB microcapsules were synthesized based on a sequential factorial design and incorporated into an epoxy matrix. Their anticorrosive action, associated with the self‐healing mechanism, demonstrated that the addition of microcapsules to the coating improved anticorrosive performance compared to pure epoxy coatings, particularly when the encapsulate ...
Vandicleya Alves Moreira   +6 more
wiley   +1 more source

Algorithms for numerical solving of 2D anomalous diffusion problems

open access: yesMathematical Modelling and Analysis, 2012
Fractional analog of the reaction diffusion equation is used to model the subdiffusion process. Diffusion equation with fractional Riemann–Liouville operator is analyzed in this paper.
Natalia Abrashina-Zhadaeva   +1 more
doaj   +1 more source

Electrodeposition in Structural Lattices of Variable Architectures

open access: yesAdvanced Engineering Materials, EarlyView.
Electrodeposition enables geometry‐sensitive, autonomous void filling while simultaneously tuning chemical and mechanical properties. The development of approaches that can autonomously fill and heal material voids and yield composites with tailorable properties is increasingly relevant in engineering.
Yeong‐Man Kwon   +3 more
wiley   +1 more source

Microstructural Evolution and In Situ Formation of TiB and TiC in Ti─5Al─2.5Sn Alloy Processed by Powder Metallurgy

open access: yesAdvanced Engineering Materials, EarlyView.
Accelerated in situ formation of TiB and TiC in Ti–5Al–2.5Sn–B4C is driven by transient liquid phase formation, which enhances particle reactions and microstructural evolution. This process increases hardness and establishes a coupled relationship between sintering temperature and reinforcement content, strongly influencing porosity in the resulting ...
Fernando. Y. Kojima, Juliano. Soyama
wiley   +1 more source

Amplitude equation for a diffusion-reaction system: The reversible Sel'kov model

open access: yesAIP Advances, 2012
For a model glycolytic diffusion-reaction system, an amplitude equation has been derived in the framework of a weakly nonlinear theory. The linear stability analysis of this amplitude equation interprets the structural transitions and stability of ...
A. K. Dutt
doaj   +1 more source

A single reaction-diffusion equation for the multifarious eruptions of urticaria. [PDF]

open access: yesPLoS Comput Biol, 2020
Seirin-Lee S   +3 more
europepmc   +1 more source

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