Results 11 to 20 of about 386,467 (345)

Subtalar Dislocations

open access: goldJAAOS: Global Research and Reviews, 2021
Subtalar dislocations are uncommon injuries that involve disruption of the talocalcaneal and talonavicular joints. Whereas medial subtalar dislocations are usually caused by low-energy mechanisms and are reducible by closed means, lateral subtalar dislocations occur due to high-energy trauma, have associated foot injuries, and may require open ...
Siddhartha Sharma   +2 more
openalex   +3 more sources

The origin of high-density dislocations in additively manufactured metals

open access: yes, 2020
The origin of dense dislocations in many additively manufactured metals remains a mystery. We here employed pure Cu as a prototype and fabricated the very challenging high-purity (>99.9%) bulk Cu by laser powder-bed-fusion (L-PBF) technique.
Ge Wang   +6 more
semanticscholar   +1 more source

Dislocations after Hip Arthroplasty (Review)

open access: yesTravmatologiâ i Ortopediâ Rossii, 2020
One of hip arthroplasty complications is dislocation of the endoprosthesis head. In the vast majority of cases, the cause of dislocation is multifactorial.
A. P. Sereda, S. M. Smetanin
doaj   +1 more source

Quantized dislocations [PDF]

open access: yesJournal of Physics: Condensed Matter, 2019
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 dislocations, aka the "dislon" theory.
openaire   +4 more sources

Intergranular space, specific surface area, grain size distribution and distribution of macro, meso and micropores of multiphase microstructure in active microalloyed multifunctional ceramics [PDF]

open access: yesScience of Sintering, 2023
As a complex multiphase heterogeneous system in solid state, multifunctional active microalloyed alumo-silicate ceramics has an inhomogeneous structure with intergranular space, which is reflected in a number of structurally sensitive properties.
Purenović Jelena M.   +1 more
doaj   +1 more source

Introduction to Dislocations

open access: yes, 1968
In materials science, dislocations are irregularities within the crystal structure or atomic scale of engineering materials, such as metals, semi-conductors, polymers, and composites.
D. Hull, D. Bacon
semanticscholar   +1 more source

Dislocation Refuted?

open access: yesSSRN Electronic Journal, 2023
When professors Weber and Marres asked me to contribute to the Liber Amicorum of professor Wattel I of course was very happy and willing to prepare a contribution. There are a number of scholars whose academic work have been a source of inspiration for me and truly contributed to the development of my thinking, during the formative phase of my ...
openaire   +2 more sources

THE POST-SEDIMENTARY CHARACTER OF DEVELOPMENT OF INTRAPLATE DISLOCATIONS AS A REFLECTION OF IMPULSIVENESS OF DEFORMATION PROCESSES

open access: yesГеодинамика и тектонофизика, 2015
The available data on well-studied areas of the Turan platform (as an example) are reviewed and analyzed to reveal the role of con-sedimentation and post-sedimentation tectonic movements in formation of dislocations of the sedimentary cover.
V. I. Popkov
doaj   +1 more source

Defect Structure Determination of GaN Films in GaN/AlN/Si Heterostructures by HR-TEM, XRD, and Slow Positrons Experiments

open access: yesNanomaterials, 2020
The present article evaluates, in qualitative and quantitative manners, the characteristics (i.e., thickness of layers, crystal structures, growth orientation, elemental diffusion depths, edge, and screw dislocation densities), within two GaN/AlN/Si ...
Vladimir Lucian Ene   +7 more
doaj   +1 more source

The significance of γ-and λ-dislocations in transient states of phyllotaxis: how to get more from less – sometimes!

open access: yesActa Societatis Botanicorum Poloniae, 2016
In some plants, developmental changes of phyllotaxis are so frequent that the whole spectrum of phyllotactic patterns becomes available for investigation and thus many unknown subtleties of phyllotaxis come to light.
Beata Zagórska-Marek, Marcin Szpak
doaj   +1 more source

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