Results 31 to 40 of about 260,838 (250)

An holomorphic study of Smarandache automorphic and cross inverse property loops [PDF]

open access: yes, 2008
By studying the holomorphic structure of automorphic inverse property uasigroups and loops[AIPQ and (AIPL)] and cross inverse property quasigroups and loops[CIPQ and (CIPL)], it is established that the holomorph of a loop is a Smarandache; AIPL, CIPL, K ...
Gbolahan, Temitoe   +1 more
core   +1 more source

Effect of temperature, pressure, crystal defect types, and densities on the mechanical behavior of tungsten under tensile deformation: A molecular dynamics simulation study

open access: yesNuclear Materials and Energy, 2023
The mechanical behavior of tungsten under tensile deformation was investigated using molecular dynamics simulations, with a focus on the effects of temperature, pressure, crystal defect types, and densities.
A. Alivaliollahi   +2 more
doaj   +1 more source

Strain Localisation and Fracture of Nuclear Reactor Core Materials

open access: yesJournal of Nuclear Engineering, 2023
The production of prismatic dislocation loops in nuclear reactor core materials results in hardening because the loops impede dislocation motion. Yielding often occurs by a localised clearing of the loops through interactions with gliding dislocations ...
Malcolm Griffiths
doaj   +1 more source

Investigation of Interactions between Dislocation and Dislocation Loops in Fe33Ni33Cr Alloy by Molecular Dynamics Simulation

open access: yesYuanzineng kexue jishu
The FeNiCr alloys hold application potential in advanced reactors, however, irradiation hardening severely impacts their safety during service. To further enhance the irradiation hardening theory of the FeNiCr alloys, the interaction mechanism between 1/
LONG Kaihong, WANG Dongjie, HUANG Chutian, JIA Lixia, HE Xinfu, DOU Yankun
doaj   +1 more source

Analysis of the Thermal Activation of High-Mobility Dislocation Loops [PDF]

open access: yes, 2020
We report thermally activated transport of highly mobile dislocation loops in terms of a line tension model where the dislocation loops are assumed to be a flexible string.
Kazuhito Ohsawa, Eiichi Kuramoto
core  

Molecular dynamics simulation of migration and mechanism transition of 1/2 <111> dislocation loops in tungsten

open access: yesNuclear Materials and Energy
Under fusion environments, interstitial dislocation loops in tungsten exhibit rapid migration along 〈 111 〉 directions. An accurate description of this behavior is crucial for predictive mesoscale modelling.
Zhaofan Wang   +6 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

The STEM characterization of dislocation loops in MA956 ODS steel after swift heavy ion irradiation

open access: yesNuclear Materials and Energy
For the purpose of clarifying the basic mechanism of material failure caused by irradiation damage, the microstructures of materials under extreme radiation conditions were evaluated by transmission electron microscopy (TEM).
Gengze Li   +5 more
doaj   +1 more source

Proton and Au-ion irradiation induced damage and hardening in ferritic/martensitic steel

open access: yesNuclear Materials and Energy, 2021
Ferritic/martensitic (F/M) steel was irradiated by proton and Au-ion at 400 °C to investigate the irradiation damage and hardening behavior. For the samples irradiated by proton, dislocation loops and dislocation lines were found in F/M steels and the ...
Ke Shi   +7 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

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