Results 171 to 180 of about 10,339 (219)

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Slip Localization Intensification Mediated by Grain Boundary Sliding in a Polycrystalline Nickel‐Based Superalloy

Advanced Engineering Materials, EarlyView.
The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat, D. Anjaria, I. Woo, C. Bean, D. Texier, J. C. Stinville   +5 more
wiley   +1 more source

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Multikingdom diffusion barrier control

Science, 2021
Plant microbiomes modulate selective nutrient uptake by regulating diffusion ...
Wolfgang, Busch, Joanne, Chory
openaire   +2 more sources

Optimal Control of Diffusions

Applied Mathematics and Optimization, 2002
The paper considers time optimal or \(L_1\)-norm (with respect to the state) optimal control problems for a linear parabolic equation with right-hand side as a measure valued control which drives the initial state to a prescribed target state. Necessary and sufficient conditions for optimality in the form of the maximum principle are derived.
openaire   +2 more sources

Multiperson Controlled Diffusions

SIAM Journal on Control, 1973
A multiperson controlled diffusion process is formulated as both a zero sum, two-person game and a nonzero sum, N-person game. Necessary and sufficient conditions are provided for a control to be a solution of these games. The value of a game, if it exists, is shown to be the solution of a second order, nonlinear differential equation.
openaire   +2 more sources

On a Fractional Diffusion Equation with Moving Control

SIAM Journal on Control and Optimization, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sorin Micu, Constantin Nita
openaire   +2 more sources

The Diffusion-Control Limit Revisited

Physical Review Letters, 2002
We consider nonequilibrium adsorption to a freshly formed surface. Owing to the initial lack of equilibrium, the common diffusion-control assumption is inconsistent at small times. A uniform small-time asymptotic approximation is constructed for a Langmuir-type system in terms of the small parameter epsilon representing the ratio of the respective ...
E, Yariv, I, Frankel
openaire   +2 more sources

Diffusion-Controlled Macromolecular Interactions

Annual Review of Biophysics and Biophysical Chemistry, 1985
3.
O G, Berg, P H, von Hippel
openaire   +2 more sources

Controlling diffusion

Journal of Controlled Release, 1993
In this paper I first briefly look at diffusion in several controlled release devices. I have found that these exploit complicated diffusional mechanisms. These cannot be understood using the conventional description of diffusion. So, a general theory of multicomponent diffusion which can describe them is considered.
openaire   +2 more sources