Results 31 to 40 of about 627,964 (328)

Simultaneous enhancement of strength and ductility with nano dispersoids in nano and ultrafine grain metals: a brief review

open access: yesReviews on Advanced Materials Science, 2020
Grain refinement is the most universal and effective method of strengthening metallic materials, which is known as the “Hall-Petch” relationship. However, when grain size is refined to sub-micro regime (Ultrafine Grain, UFG) or even nano regime (Nano ...
Hu Yusheng   +7 more
doaj   +1 more source

Strain Rate of Metal Deformation in the Machining Process from a Fluid Flow Perspective

open access: yesApplied Sciences, 2020
Metal cutting speeds are getting faster with the development of high-speed cutting technology, and with the increase in cutting speed, the strain rate will become larger, which makes the study of the metal cutting process more inconvenient.
Keguo Zhang   +3 more
doaj   +1 more source

A case report of adjustment for tip of the totally implantable venous-access ports in the neck after placement through the veins of right upper limb (1例经右上臂植入输液港尖端颈内异位调整的经验总结)

open access: yes中西医结合护理, 2021
This paper summarized the influence factors and adjustment methods for dislocation of tip of the totally implantable venous-access ports(TIVAPs)in the jugular vein after placement through the veins of right upper limb and related adjustment method ...
CHEN Yao (陈垚)   +3 more
doaj   +1 more source

Stress State Required for Pyramidal Dislocation Movement in Zinc [PDF]

open access: yes, 1968
A tension or compression stress in such a direction that basal slip is minimized can produce second-order pyramidal slip bands in zinc single crystals. The stress required to initiate pyramidal dislocation motion is not sensitive to temperature. However,
Blish, R. C., II, Vreeland, T., Jr.
core   +1 more source

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

open access: yes, 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   +24 more
core   +1 more source

DUAL MOBILITY CUPS REDUCE DISLOCATION RATE IN TOTAL HIP ARTHROPLASTY FOR DISPLACED FEMORAL NECK FRACTURES [PDF]

open access: yesJournal of IMAB, 2018
PURPOSE: To assess the dislocation rate after total hip arthroplasty with dual mobility cup (DMC) for displaced femoral neck fractures and to compare the results with that of conventional total hip arthroplasty (THA) and bipolar hemiarthroplasty (BHA) in
Maksim Zagorov   +5 more
doaj  

Microstructural modifications in tungsten induced by high flux plasma exposure : TEM examination [PDF]

open access: yes, 2016
We have performed microstructural characterization using transmission electron microscopy (TEM) techniques to reveal nanometric features in the sub-surface region of tungsten samples exposed to high flux, low energy deuterium plasma.
Bakaeva, Anastasiia   +5 more
core   +1 more source

Rotator Cuff Muscle Imbalance in Patients with Chronic Anterior Shoulder Instability

open access: yesDiagnostics
(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

Intermittent dislocation density fluctuations in crystal plasticity from a phase-field crystal model

open access: yes, 2014
Plastic deformation mediated by collective dislocation dynamics is investigated in the two-dimensional phase-field crystal model of sheared single crystals.
Angheluta, Luiza   +3 more
core   +1 more source

Open anterior hip dislocation in a young adult with exposed femoral head and no neurovascular damage [PDF]

open access: yesMalaysian Orthopaedic Journal, 2012
Anterior hip dislocation is common in younger adults and is the result of severe, high energy trauma such as high-velocity motor vehicle accidents or falls from great heights.
N Muzaffar, A Hafeez, N Bashir, S Singh
doaj   +1 more source

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