Results 1 to 10 of about 633,726 (317)

Diffusion control in biochemical specificity. [PDF]

open access: yesBiophys J, 2022
Biochemical specificity is critical in enzyme function, evolution, and engineering. Here we employ an established kinetic model to dissect the effects of reactant geometry and diffusion on product formation speed and accuracy in the presence of cognate (correct) and near-cognate (incorrect) substrates.
Alejo JL, Kempes CP, Adamala KP.
europepmc   +3 more sources

Mathematical Programming for the Dynamics of Opinion Diffusion

open access: yesPhysics, 2023
The focus of this paper is on analyzing the role and the choice of parameters in sociophysics diffusion models by leveraging the potentialities of sociophysics from a mathematical programming perspective. We first present a generalised version of Galam’s
Andrea Ellero   +2 more
doaj   +1 more source

Memory-controlled diffusion [PDF]

open access: yesPhysical Review E, 2004
Memory effects require for their incorporation into random-walk models an extension of the conventional equations. The linear Fokker-Planck equation for the probability density $p(\vec r, t)$ is generalized to include non-linear and non-local spatial-temporal memory effects.
Trimper, Steffen   +2 more
openaire   +3 more sources

Towards a High Rejection Desalination Membrane: The Confined Growth of Polyamide Nanofilm Induced by Alkyl-Capped Graphene Oxide

open access: yesMembranes, 2021
In this paper, we used an octadecylamine functionalized graphene oxide (ODA@GO) to induce the confined growth of a polyamide nanofilm in the organic and aqueous phase during interfacial polymerization (IP).
Biqin Wu   +7 more
doaj   +1 more source

Optimal Control for Diffusions on Graphs [PDF]

open access: yesSIAM Journal on Discrete Mathematics, 2018
32 pages, 2 ...
Laura Florescu   +2 more
openaire   +2 more sources

Size Effects of the Crystallite of ZSM-5 Zeolites on the Direct Catalytic Conversion of L-Lactic Acid to L, L-Lactide

open access: yesCrystals, 2020
ZSM-5 zeolites are commonly used as a heterogeneous catalyst for reactions. Four ZSM-5 catalysts (with various crystallite sizes and a similar ratio of Si/Al) and their ball-milling/surface-poisoning derivates were used to convert L-lactic acid to L, L ...
Qintong Huang   +3 more
doaj   +1 more source

Construction of a temperature‐controlled diffusion phantom for quality control of diffusion measurements [PDF]

open access: yesJournal of Magnetic Resonance Imaging, 2009
AbstractPurposeTo construct a temperature‐controlled diffusion phantom with known diffusion properties and geometry in order to facilitate the comparison and optimization of diffusion sequences with the objective of increasing the precision of experimentally derived diffusion parameters.Materials and MethodsA temperature‐stabilized diffusion phantom ...
Reischauer, C   +3 more
openaire   +3 more sources

Theory of Diffusion Controlled Growth [PDF]

open access: yesPhysical Review Letters, 2002
We expand upon a new theoretical framework for Diffusion Limited Aggregation and associated Dielectric Breakdown Models in two dimensions [R. C. Ball and E. Somfai, Phys. Rev. Lett. 89, 135503 (2002)]. Key steps are understanding how these models interrelate when the ultra-violet cut-off strategy is changed, the analogy with turbulence and the use of ...
Ball, Robin, Somfai, Ellák
openaire   +4 more sources

Cure reaction modelling for thermosetting resin having two-step reaction peaks

open access: yesNihon Kikai Gakkai ronbunshu, 2020
When thermosetting resin changes from liquid to solid in cure process, the elasticity and volume also vary with the degree of reaction based on the tempearture history.
Hiroki NAKATSUCHI, Yuri KAJIHARA
doaj   +1 more source

Study on numerical simulation method of viscosity time-varying slurry diffusion law

open access: yesFrontiers in Earth Science, 2023
In this study, finite element and finite difference methods were used for numerical calculations. The law of slurry diffusion in the inclined plane cracks is summarized in this study.
Guohua Zhang   +4 more
doaj   +1 more source

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