Results 41 to 50 of about 622,415 (331)

Rotator Cuff Muscle Imbalance in Patients with Chronic Anterior Shoulder Instability

Diagnostics
(1) Background: Both intra-articular pathologies and muscle imbalance can be a cause of shoulder instability. The purpose of this study is to examine the cross-sectional areas of the rotator cuff muscle in patients with acute and chronic anterior ...
Du-Han Kim, Ji-Hoon Kim, Chul-Hyun Cho
doaj   +1 more source

Comparison of Two Posterior Soft Tissue Repair Techniques to Prevent Dislocation after Total Hip Arthroplasty via the Posterolateral Approach

Journal of Investigative Surgery, 2021
Background Although the posterolateral approach is considered to carry a higher early dislocation rate after total hip arthroplasty, posterior soft tissue repair techniques make up for this limitation.
Fei Wu, Peng Yin, Xuefeng Yu, Gang Liu, Weihao Zheng   +4 more
doaj   +1 more source

Discrete dislocation dynamics simulations of dislocation-$\theta'$ precipitate interaction in Al-Cu alloys

, 2018
The mechanisms of dislocation/precipitate interaction were studied by means of discrete dislocation dynamics within a multiscale approach. Simulations were carried out using the discrete continuous method in combination with a fast Fourier transform ...
Capolungo, L., Esteban-Manzanares, G., LLorca, J., Papadimitriou, I., Santos-Güemes, R., Segurado, J.   +5 more
core   +1 more source

A model for frictional sliding instability on a heterogeneous fault

Annals of Geophysics, 1994
An instability of frictional sliding driven by tectonic stress is assumed to be the source of earthquakes. Empirical slip laws indicate that, under constant ambient conditions, friction depends on time, slip rate and slip history.
A. Piombo, M. Dragoni
doaj   +1 more source

Hearing and Seeing Nerve/Tendon Snapping: A Systematic Review on Dynamic Ultrasound Examination

Sensors, 2023
Nerve/tendon snapping can occur due to their sudden displacement during the movement of an adjacent joint, and the clinical condition can really be painful.
Carmelo Pirri, Nina Pirri, Carla Stecco, Veronica Macchi, Andrea Porzionato, Raffaele De Caro, Levent Özçakar   +6 more
doaj   +1 more source

Hydrogen-enhanced local plasticity in aluminum: an ab initio study

, 2001
Dislocation core properties of Al with and without H impurities are studied using the Peierls-Nabarro model with parameters determined by ab initio calculations.
C. D. Beachem, D. G. Ulmer, D. P. Abraham, D. Vanderbilt, Efthimios Kaxiras, G. Lu, G. Lu, Gang Lu, H. K. Birnbaum, J. E. Angelo, J. P. Perdew, J. R. Rice, M. J. Mills, M. S. Daw, M. S. Duesbery, Nicholas Kioussis, P. J. Ferreira, P. J. Ferreira, P. Sofronis, Qing Zhang, S. M. Myers, S. P. Lynch, T. Matsumoto, V. V. Bulatov, V. V. Bulatov   +24 more
core   +1 more source

Probing microplasticity in small scale FCC crystals via Dynamic Mechanical Analysis [PDF]

, 2016
In small-scale metallic systems, collective dislocation activity has been correlated with size effects in strength and with a step-like plastic response under uniaxial compression and tension.
Adhikari, Rana X, Greer, Julia R., Ni, Xiaoyue, Papanikolaou, Stefanos, Vajente, Gabriele   +4 more
core   +5 more sources

Nanoscale Mechanical and Mechanically-Induced Electrical Properties of Silicon Nanowires

Crystals, 2019
Molecular dynamics (MD) simulation was employed to examine the deformation and phase transformation of mono-crystalline Si nanowire (SiNW) subjected to tensile stress.
Yen-Hung Lin, Tei-Chen Chen
doaj   +1 more source

Compressive Rheological Behavior and Microstructure Evolution of a Semi-Solid CuSn10P1 Alloy at Medium Temperature and Low Strain

Metals, 2022
Copper–tin alloys are widely used in the machining and molding of sleeves, bearings, bearing housings, gears, etc. They are a material used in heavy-duty, high-speed and high-temperature situations and subject to strong friction conditions due to their ...
Zhangxing Liu, Rongfeng Zhou, Wentao Xiong, Zilong He, Tao Liu, Yongkun Li   +5 more
doaj   +1 more source

Dislocation interactions mediated by grain boundaries

, 2008
The dynamics of dislocation assemblies in deforming crystals indicate the emergence of collective phenomena, intermittent fluctuations and strain avalanches.
Fetter A L, Hall E O, Hirth J P, Landau L D, Lasse Laurson, Leoni F, Mikko J Alava, Paolo Moretti, Petch N J, Weiss J, Zaiser M   +10 more
core   +1 more source