Results 41 to 50 of about 94,816 (318)

A bcc refractory high-entropy alloy: the ideal case of smooth plastic flow

Materials Research Letters
Single crystalline metals exhibit correlated dislocation dynamics, irrespective of lattice system. This collective evolution of dislocation structures is intermittent and scale-free, implying divergent length scales that play a critical role in failure ...
Yen-Ting Chang, Abhi Sharda, Julian M. Rosalie, Robert Maaß, Marie A. Charpagne   +4 more
doaj   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Observation of the Impact of Dislocations on Atomic Polarization and Domain Structures in BaTiO3

Advanced Physics Research
Line defects, dislocations, in ferroelectric materials can facilitate the nucleation of new domains and pin the motion of domain walls, leading to significant electromechanical responses.
Shan Xiang, Yan Zhang, Miao Song, Edoardo Zatterin, Hanyu Gong, Fangping Zhuo, Kechao Zhou, Dou Zhang   +7 more
doaj   +1 more source

Statistical aspects of microplasticity: experiments, discrete dislocation simulations and stochastic continuum models

Journal of the Mechanical Behavior of Materials, 2013
The plastic deformation properties of microscale and nanoscale specimens differ from those of their macroscopic counterparts as the discrete nature of the elementary processes governing plastic flow becomes directly visible. In such specimens, details of
Zaiser Michael
doaj   +1 more source

A discrete dislocation dynamics study aiming at understanding fatigue crack initiation [PDF]

, 2003
We use discrete dislocation dynamics to build a model for fatigue crack initiation in a surface grain. Dislocations are modeled as line singularities in an elastic medium where they can be generated from pre-existing sources, glide or annihilate.
Giessen, Erik van der,, Van der Giessen, E, Brinckmann, Steffen,, Van der Giessen, E; id_orcid, Giessen, Erik van der, Brinckmann, S, Giessen, Erik van der; id_orcid, van der Giessen, E., van der Giessen, E.; id_orcid, Steffen Brinckmann, Erik Van Der Giessen, Brinckmann, S., Brinckmann, Steffen   +12 more
core   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS 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, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

The 3D Stress Field of a Dislocation Line Outside a Cylindrical Void: A Numerical Collocation Point Method with Verification

Applied Sciences
Material defects resulting from manufacturing and processing can significantly affect material properties. Voids and dislocations are material defects considered in this study, in which a numerical solution of the 3D stress field of a dislocation line ...
Luo Li, Tariq Khraishi
doaj   +1 more source

On the Evidence of Thermodynamic Self-Organization during Fatigue: A Review

Entropy, 2020
In this review paper, the evidence and application of thermodynamic self-organization are reviewed for metals typically with single crystals subjected to cyclic loading. The theory of self-organization in thermodynamic processes far from equilibrium is a
Mehdi Naderi
doaj   +1 more source

A model of grain refinement and strengthening of Al alloys due to cold severe plastic deformation

, 2012
This paper presents a model which quantitatively predicts grain refinement and strength/hardness of Al alloys after very high levels of cold deformation through processes including cold rolling, equal channel angular pressing (ECAP), multiple forging (MF)
Nong Gao, Marco J. Starink, Qiao, Xiao Guang, Starink, Marco J., Xiao Guang Qiao, Gao, Nong   +5 more
core   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source