Results 11 to 20 of about 112,493 (258)
Coincident electron channeling and cathodoluminescence studies of threading dislocations in GaN [PDF]
, 2014 We combine two scanning electron microscopy techniques to investigate the influence of dislocations on the light emission from nitride semiconductors.
Edwards, P. R. +11 more
core +2 more sources
Simulation of screw dislocations in wadsleyite [PDF]
, 2010 The structure and energies of the cores of [100] and [001] screw dislocations in wadsleyite \left(\beta-Mg{_2}SiO{_4}\right) are calculated using a cluster-based combined elastic-atomistic method and a new parameterized interatomic potential model.
Walker, AM, Walker, A.M.
core +1 more source
Randomized comparison of popliteal-sciatic perineural catheter tip migration and dislocation in a cadaver model using two catheter designs [PDF]
Korean Journal of Anesthesiology, 2017 BackgroundNew catheter-over-needle (CON) technology for continuous peripheral nerve blockade has emerged, but its effect on the risk of perineural catheter tip dislocation is unknown.
Lauren Steffel +5 more
doaj +1 more source
Microstructural Evolution along the NiCrMoV Steel Welded Joints Induced by Low-Cycle Fatigue Damage
Metals, 2021 The degradation of mechanical properties of materials is essentially related to microstructural changes under service loadings, while the inhomogeneous degradation behaviors along welded joints are not well understood.
Shuo Weng +3 more
doaj +1 more source
Dislocation Structures in Low-Angle Grain Boundaries of α-Al2O3
Crystals, 2018 Alumina (α-Al2O3) is one of the representative high-temperature structural materials. Dislocations in alumina play an important role in its plastic deformation, and they have attracted much attention for many years.
Eita Tochigi +3 more
doaj +1 more source
Multi-scale modelling of III-nitrides: from dislocations to the electronic structure [PDF]
, 2009 Gallium nitride and its alloys are direct band gap semiconductors with a wide variety of applications. Of particular importance are light emitting diodes and laser diodes. Due to the lack of suitable lattice-matched substrates, epitaxial layers contain a
core +2 more sources
Powders, 2023 Mechanochemistry is one of the ten great discoveries of green chemistry methods for synthesizing new substances. A drug substance from the fluoroquinolone group was exposed to high-intensity mechanical impacts using a laboratory knife mill for 21 min and
Elena Uspenskaya +9 more
doaj +1 more source
Phase critical point densities in planar isotropic random waves [PDF]
, 2001 The densities of critical points of phase (extrema and saddles), which play an important role in the theory of phase singularities (wave dislocations) in two dimensions, are calculated in isotropic plane wave superpositions.
Dennis, MR +3 more
core +1 more source
Applied Sciences, 2020 This study aims to characterize nondestructively the creep-fatigue damage of tempered ferritic steel by dynamic coercivity measured by reversible permeability. The creep-fatigue test was achieved under load control with a hold time of 60 s and 600 s. The
Chung Seok Kim
doaj +1 more source
Metals, 2021 Acoustic properties (logarithmic decrement and dynamic Young’s modulus) of commercial grade magnesium have been measured in the temperature range 51–310 K.
Pavel Pal-Val +4 more
doaj +1 more source