Results 71 to 80 of about 527,812 (346)

Dislocation Analysis of Nanoindentation on Different Crystal Planes of 6H-SiC Based on Molecular Dynamics Simulation

open access: yesCrystals, 2022
In order to explore the deformation law of nanoindentation dislocation on different crystal planes of 6H-SiC by cube indenter at high temperature, the (0001), (11¯00) and (21¯1¯0) crystal planes were simulated by molecular dynamics, and changes of ...
Dongling Yu   +4 more
doaj   +1 more source

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

open access: yesFEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Deformation Mechanisms of FCC-Structured Metallic Nanocrystal with Incoherent Twin Boundary

open access: yesMetals, 2021
Incoherent twin boundaries (ITBs) can significantly affect the mechanical properties of twin-structured metals. However, most previous studies have focused on the deformation mechanism of the coherent twin boundary (CTB), and metals with ITB-accommodated
Yang Tao   +4 more
doaj   +1 more source

Shockwave generates < 100 > dislocation loops in bcc iron

open access: yesNature Communications, 2018
The formation mechanism of  interstitial dislocation loops in ferritic steels stemming from irradiation remains elusive, as their formations are either too short for experiments, or too long for molecular dynamics simulations.
Qing Peng   +7 more
semanticscholar   +1 more source

Mechanistic basis for inhibition of the extended‐spectrum β‐lactamase GES‐1 by enmetazobactam and tazobactam

open access: yesFEBS Letters, EarlyView.
Antimicrobial resistance (AMR) is of huge importance, resulting in over 1 million deaths each year. Here, we describe how a new drug, enmetazobactam, designed to help fight resistant bacterial diseases, inhibits a key enzyme (GES‐1) responsible for AMR. Our data show it is a more potent inhibitor than the related tazobactam, with high‐level computation
Michael Beer   +10 more
wiley   +1 more source

Recurrent and radiographically unrecognized iatrogenic intra‐prosthesis hip dislocations

open access: yesJournal of the American College of Emergency Physicians Open, 2020
Hip dislocation is a common complication after total hip arthroplasty surgery. Newer prosthetic implants aim to reduce the risk of dislocation. The new dual mobility implant has a unique design that may result in intra‐prosthetic dislocation. We report a
Olivia J. K. Fox   +2 more
doaj   +1 more source

Deformation Behavior of Two-Phase Gradient Nanograined Fe95Ni5 Alloys under Different Types of Loading

open access: yesMetals, 2022
In this paper, we used molecular dynamics simulations to study the atomic mechanisms of phase transformations, plasticity features, and mechanical properties of two-phase Fe95Ni5 (at.
Aleksandr Korchuganov   +2 more
doaj   +1 more source

Multiscale modeling of dislocation-precipitate interactions in Fe: From molecular dynamics to discrete dislocations. [PDF]

open access: yesPhysical Review E, 2016
The stress-driven motion of dislocations in crystalline solids, and thus the ensuing plastic deformation process, is greatly influenced by the presence or absence of various pointlike defects such as precipitates or solute atoms.
Arttu Lehtinen   +4 more
semanticscholar   +1 more source

Imeglimin attenuates liver fibrosis by inhibiting vesicular ATP release from hepatic stellate cells

open access: yesFEBS Letters, EarlyView.
Imeglimin, at clinically relevant concentrations, inhibits vesicular ATP accumulation and release from hepatic stellate cells, thereby attenuating purinergic signaling and reducing fibrogenic activation. This mechanism reveals a newly identified antifibrotic action of imeglimin beyond glycemic control.
Seiji Nomura   +8 more
wiley   +1 more source

Interactions between Dislocations and Penta-Twins in Metallic Nanocrystals

open access: yesMetals, 2021
Dislocation interactions with twin boundary (TB) have been well-established in nanotwinned metals. Penta-twins, as an extreme of crystal twinning, are tacitly assumed to be more effective at blocking dislocation motions than conventional single or ...
Yingbin Chen   +4 more
doaj   +1 more source

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