Results 41 to 50 of about 543,146 (298)

Defect-Related Etch Pits on Crystals and Their Utilization

open access: yesCrystals, 2022
Etch pits could form on an exposed surface of a crystal when the crystal is exposed to an etching environment or chemicals. Due to different dissolution rates along various crystalline directions in a crystal, the dissolution process is anisotropic ...
Dongzhu Lu   +5 more
doaj   +1 more source

Continuum Representation of Systems of Dislocation Lines: A General Method for Deriving Closed-Form Evolution Equations

open access: yes, 2016
Plasticity is governed by the evolution of, in general anisotropic, systems of dislocations. We seek to faithfully represent this evolution in terms of density-like variables which average over the discrete dislocation microstructure.
Monavari, Mehran   +2 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Pulsed Magnetic Treatment of Cobalt for Enhanced Microstructures and Mechanical Properties

open access: yesMetals, 2022
In this study, the effects of pulsed magnetic treatment (PMT) on the microstructure and performance of pure bulk cobalt (Co) were investigated to reveal the underlying influencing mechanism of the pulsed magnetic field on ferromagnetic materials.
Yajie Li   +5 more
doaj   +1 more source

An elastoplastic theory of dislocations as a physical field theory with torsion

open access: yes, 2002
We consider a static theory of dislocations with moment stress in an anisotropic or isotropic elastoplastical material as a T(3)-gauge theory. We obtain Yang-Mills type field equations which express the force and the moment equilibrium.
Abrikosov A A   +44 more
core   +1 more source

Study of size effects in thin films by means of a crystal plasticity theory based on DiFT [PDF]

open access: yes, 2007
In a recent publication, we derived the mesoscale continuum theory of plasticity for multiple-slip systems of parallel edge dislocations, motivated by the statistical-based nonlocal continuum crystal plasticity theory for single-glide due to Yefimov et ...
Limkumnerd, Surachate   +1 more
core   +3 more sources

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

AISI 304 Welding Fracture Resistance by a Charpy Impact Test with a High Speed Sampling Rate

open access: yesMetals, 2017
The purpose of this study was to evaluate fracture resistance in AISI 304. The J-R curve was constructed from data, which resulted from an impact test by Charpy Impact machine equipped with high-speed sampling rate data acquisition equipment.
Bambang Riyanta   +3 more
doaj   +1 more source

A bilateral asymmetrical hip dislocation: A rare case report

open access: yesClinical Case Reports, 2022
A 17‐year‐old male was ejected from the motorcycle and brought to the Emergency Department with bilateral hip dislocation and absence of pelvic or femur fractures or sciatic nerve injury. Closed reduction and postreduction examination were performed with
Adnan Ayman Mohammed Adnan Alnaser   +4 more
doaj   +1 more source

The Mechanism of the High Resistance to Hydrogen-Induced Strength Loss in Ultra-High Strength High-Entropy Alloy

open access: yesMetals, 2022
The resistance of the Al0.5Cr0.9FeNi2.5V0.2 high-entropy alloy (HEA) to hydrogen embrittlement (HE) was investigated by a slow strain rate test (SSRT), and the fracture surface was examined through a scanning electron microscope. Compared with other high-
Zhenhuan Gao   +4 more
doaj   +1 more source

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