Results 101 to 110 of about 19,203 (311)

Computational Methods for Multidimensional Neutron Diffusion Problems

open access: yesScience and Technology of Nuclear Installations, 2009
A neutronic module for the solution of two-dimensional steady-state multigroup diffusion problems in nuclear reactor cores is developed. The module can produce both direct fluxes as well as adjoints, that is, neutron importances.
Song Han, Sandra Dulla, Piero Ravetto
doaj   +1 more source

High accurate three-dimensional neutron noise simulator based on GFEM with unstructured hexahedral elements

open access: yesNuclear Engineering and Technology, 2019
The purpose of the present study is to develop the 3D static and noise simulator based on Galerkin Finite Element Method (GFEM) using the unstructured hexahedral elements.
Seyed Abolfazl Hosseini
doaj   +1 more source

Multi-dimensional neutron diffusion

open access: yesJournal and proceedings of the Royal Society of New South Wales, 1982
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Predicting Crystal Structures and Ionic Conductivities in Li3YCl6−xBrx Halide Solid Electrolytes Using a Fine‐Tuned Machine Learning Interatomic Potential

open access: yesAdvanced Intelligent Systems, EarlyView.
This study refines the Crystal Hamiltonian Graph Network to predict energies, structures, and lithium‐ion dynamics in halide electrolytes. By generating ordered structural models and using an iterative fine‐tuning workflow, we achieve near‐ab initio accuracy for phase stability and ionic transport predictions.
Jonas Böhm, Aurélie Champagne
wiley   +1 more source

La diffusion de neutrons

open access: yes, 2022
Editorial d'introduction consacré à l'histoire de la neutronique en France, son usage en chimie et son futur en raison de la fermeture de la source française ...
Colomban, Philippe, Malikova, Natalie
openaire   +1 more source

Neutron diffusion formulae for homogeneous, axially symmetric, anisotropic media, for monte carlo applications.

open access: yes, 1961
Probability distributions and mean values relating to the diffusion of monoenergetic neutrons in a homogeneous but anisotropic medium are derived as basic studies of Monte Carlo calculations of radial and axial diffusion coefficients in heterogeneous ...
Thompson, JJ
core  

Fast anion-conduction in oxynitrides: oxygen and nitrogen transport in (Y, Zr)-(O, N)

open access: yes, 2008
Cation doped zirconium oxynitrides (for example zirconium oxide doped with yttrium oxide and nitrogen, \\u27\u27YZrON\\u27\u27), having a fluorite-based structure, are suggested to have fairly high nitrogen diffusivity, besides their high oxygen mobility.
Taylor, Marcela Andrea   +6 more
core  

The finite - difference neutron diffusion programme TWODIM [PDF]

open access: yes, 1976
The (B 6700 algol version of the) two-dimensional neutron-diffusion-programmeTWODIM (ref.
Kristiansen, G.K.
core  

Symmetry and Solution of Neutron Transport Equations in Nonhomogeneous Media

open access: yesAbstract and Applied Analysis, 2014
We propose the group-theoretical approach which enables one to generate solutions of equations of mathematical physics in nonhomogeneous media from solutions of the same problem in a homogeneous medium.
Ivan Tsyfra, Tomasz Czyżycki
doaj   +1 more source

Spatial Evolution of Coke in ZSM‐5 Catalysts During Methanol‐to‐Hydrocarbons Conversion Revealed by In Situ X‐Ray Photoelectron Spectroscopy

open access: yesAngewandte Chemie International Edition, EarlyView.
Coking is the central source of deactivation of zeolite catalysts. Using in situ XPS along with complementary methods, we identify differences in the formation kinetics and composition of surface coke on industrially relevant ZSM‐5 catalysts during MTH conversion, demonstrating the strong potential of this technique for studying catalyst deactivation ...
Luca Artiglia   +6 more
wiley   +1 more source

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