20 papers · ranked by Valyu relevance
Mingda Li
A dislocation, just like a phonon, is a type of atomic lattice displacement but subject to an extra topological constraint. However, unlike the phonon which has been quantized for decades, the dislocation has long remained classical. This article is a comprehensive review of the recent progress on quantized…
Claudio Chillemi, Vincenzo Franceschini, Luca Dei Giudici, Ambra Alibardi + 3 more
'Ambra Alibardi' 'Francesco Salate Santone' 'Luis J. Ramos Alday' 'Marcello Osimani'] Background. Acromioclavicular (AC) joint dislocation is a common shoulder problem. However, information about the basic epidemiological features of this condition is scarce. The aim of this study is to analyze the epidemiology of…
Alexander Muacevic, John R Adler, Ambrose Loc T Ngo, Gabrielle Dykhouse + 5 more
'Gabrielle Dykhouse' 'Taylor J Manes' 'Phillip C McKegg' 'Cameron J Sabet' 'Brett Barthman' 'Robert Golden'] Introduction Hip dislocations are devastating injuries that require urgent intervention to minimize the development of severe complications. This study aimed to evaluate the epidemiology of hip dislocations in…
Chiqun Zhang, Amit Acharya
The utility of the notion of generalized disclinations in materials science is discussed within the physical context of modeling interfacial and bulk line defects like defected grain and phase boundaries, dislocations and disclinations. The Burgers vector of a disclination dipole in linear elasticity is derived…
Thomas Hudson, Marco Morandotti
In this paper, the dynamics of a system of a finite number of screw dislocations is studied. Under the assumption of antiplane linear elasticity, the two– dimensional dynamics is determined by the renormalised energy. The interaction of one dislocation with the boundary and of two dislocations of opposite Burgers…
Xiaohua Niu, Tao Luo, Jianfeng Lu, Yang Xiang
We develop a mesoscopic dislocation dynamics model for vacancy-assisted dislocation climb by upscalings from a stochastic model on the atomistic scale. Our models incorporate microscopic mechanisms of (i) bulk diffusion of vacancies, (ii) vacancy exchange dynamics between bulk and dislocation core, (iii) vacancy pipe…
Mei-Ren Zhang, Jian-Hui Hu, Xiao Zeng, You-Cong Feng + 1 more
Rationale: Ipsilateral simultaneous shoulder and elbow dislocations are rare and complex injuries. Only a few case reports have been published in the literature. Therefore, little is known about the mechanism of injury and its treatment. Patient concerns: An 83-year-old woman presented with severe pain in the right…
S Liavaag, S Svenningsen, O Reikerås, M Enger + 3 more
'A H Pripp' 'J I Brox'] There are few previous studies on the incidence of shoulder dislocation in the general population. The aim of the study was to report the incidence of acute shoulder dislocations in the capital of Norway (Oslo) in 2009. Patients of all ages living in Oslo, sustaining a dislocation of the…
Alexander Muacevic, John R Adler, Michael D Baird, Alexis B Sandler + 6 more
'John P Scanaliato' 'Annette H Yoon' 'Morgan R Askew' 'Kyle J Klahs' 'John C Dunn' 'Nata Parnes'] Background Elbows are one of the most frequently dislocated large joints; however, there is limited epidemiological data, especially during the coronavirus disease 2019 (COVID-19) pandemic. This study characterizes elbow…
Serena Dipierro, Stefania Patrizi, Enrico Valdinoci
We revisit some recents results inspired by the Peierls-Nabarro model on edge dislocations for crystals which rely on the fractional Laplace representation of the corresponding equation. In particular, we discuss results related to heteroclinic, homoclinic and multibump patterns for the atom dislocation function, the…
Yong Girl Rhee, Nam Su Cho, Seung Hyun Cho
Background The aim of this study was to identify the factors that affect the progress of a traumatic anterior dislocation of the shoulder. Methods Two hundred and thirty-eight patients (246 shoulders) with a traumatic anterior dislocation were enrolled in this study. The mean age at the time of surgery was 25 years…
Authors not listed
Hydrogen embrittlement severely degrades mechanical properties of austenitic stainless steels (γ-SS), yet the bulk deformation microstructures responsible for this phenomenon have not been directly observed. While the internal microstructure is essential to define metal plasticity, deformation, and fracture, no…
Chuanlai Liu, Franz Roters, Dierk Raabe
Solid-state Li-ion batteries, utilizing Ni-rich oxide cathodes, hold promise for high-energy electrochemical storage. However, Li intercalation-induced dimensional changes can lead to crystal defect formation in these cathodes, and contact mechanics problems between cathode and solid electrolyte. Understanding the…
Pierluigi Cesana, Alfio Grillo, Marco Morandotti, Andrea Pastore
The dynamics of a system of particles subject to a 4th order potential field modeling the space-time evolution of wedge disclinations is studied, focusing on finite systems of disclinations within a circular domain. Existence theorems for the trajectories of these disclinations are presented, considering both the…
Eleanor Herbert, Michelle Stewart, Marie Hutchison, Ann M. Flenniken + 15 more
Dislocation in hindlimb tarsals are being observed at a low, but persistent frequency in adult male mice from C57BL/6N substrains. Clinical signs included a sudden onset of mild to severe unilateral or bilateral tarsal abduction, swelling, abnormal hindlimb morphology and lameness. Contraction of digits and gait…
Qi Fan, Xiaoyan Han, Xiangjia Zhu, Lei Cai + 3 more
'Jin Yang'] Purpose To investigate the clinical characteristics of patients with intraocular lens (IOL) dislocation after IOL implantation in Chinese Han populations. Methods The medical records of patients with IOL dislocation were retrospectively reviewed from January 2007 to December 2017, and a total of 312…
Greg Huber, Michael Wilkinson
The sheet-like endoplasmic reticulum (ER) of eukaryotic cells has been found to be riddled with spiral dislocations, known as ‘Terasaki ramps’, in the vicinity of which the doubled bilayer membranes which make up ER sheets can be approximately modeled by helicoids. Here we analyze diffusion on a surface with locally…
Ata M. Kiapour, Jiaxue Cao, Mariel Young, Terence D. Capellini
Given GDF5 involvement in hip development, and osteoarthritis (OA) and developmental hip dysplasia (DDH) risk, here we sought to assess the role(s) of GDF5 and its regulatory sequence on the development of hip morphology linked to injury risk. The brachypodism (bp) mouse, which harbors a Gdf5 inactivating mutation, was…
Mairin A. Balisi, Abhinav K. Sharma, Carrie M. Howard, Christopher A. Shaw + 2 more
Reconstructing the behavior of extinct species is challenging, particularly for those with no living analogues. However, damage preserved as paleopathologies on bone can record how an animal moved in life, potentially reflecting patterns of behavior. Here, for the first time, we use computed tomography (CT) to assess…
Michael Fischer
In all-silica zeolites synthesised via the “fluoride route”, the fluoride anions are typically incorporated in small cages, forming [SiO 4 F] - trigonal bipyramids. While diffraction and NMR experiments can elucidate the fluoride location(s) and the occurrence/absence of dynamic disorder, they provide limited insights…