Results 81 to 90 of about 50,805 (272)

Microstructural evolution, recovery and recrystallization kinetics of isothermally annealed ultra low carbon steel

open access: yesMaterials Research Express, 2020
The recovery and recrystallization kinetics of 80% cold rolled ultra low carbon steel are investigated during isothermally annealing for temperature ranges 350–640 °C as a function of different annealing time.
Siuli Dutta   +4 more
doaj   +1 more source

Effect of Terbium Ion Substitution in Inverse Spinel Nickel Ferrite: Structural and Magnetic Study

open access: yesMagnetochemistry, 2020
Doping rare-earth ions into spinel ferrites can alter their electrical and magnetic properties. The present study delineates the structure−property relationship of the effect of rare-earth terbium doping in NiFe2O4 ferrite.
Deepa Guragain   +5 more
doaj   +1 more source

Coercive Interventions [PDF]

open access: yesInternational Journal of Indian Psychology, 2015
Coercion is threat of actions which compels the patient to behave in a manner inconsistent with his own wishes. Coercion is inevitable in psychiatric practices. Various coercive techniques are chemical and physical restraints, seclusion and isolation. This chapter deals with various types of coercive interventions.
openaire   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

open access: yesAdvanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen   +5 more
wiley   +1 more source

Nb-doping Induced High Coercivity in Pr2Fe14B/α-Fe Nanocomposite Melt-spun Ribbons

open access: yesMedžiagotyra
The effect of niobium (Nb) doping on the microstructure and magnetic properties of as-spun Pr10Fe82.5-xB6.5Nbx ribbons was investigated. Nb doping significantly refines the grain size and enhances the coercivity, which increases from 380 kA/m (x = 0) to ...
Shuang FU   +3 more
doaj   +1 more source

Investigating Size- and Temperature-Dependent Coercivity and Saturation Magnetization in PEG Coated Fe3O4 Nanoparticles

open access: yesMagnetochemistry, 2017
Polyethylene glycol (PEG) coated magnetic Fe3O4 nanoparticles with diameters of 12 nm, 15 nm, and 16 nm were synthesized by the usual co-precipitation method.
Chiranjib Nayek   +4 more
doaj   +1 more source

A quasi-optimal coarse problem and an augmented Krylov solver for the Variational Theory of Complex Rays

open access: yes, 2016
The Variational Theory of Complex Rays (VTCR) is an indirect Trefftz method designed to study systems governed by Helmholtz-like equations. It uses wave functions to represent the solution inside elements, which reduces the dispersion error compared to ...
Gosselet, Pierre, Kovalevsky, L
core   +2 more sources

2D Co‐Mo‐Hydroxide‐Based Multifunctional Material for the Development of H2‐Based Clean Energy Technologies

open access: yesAdvanced Materials, EarlyView.
2D α‐Co(OH)2 interleaved with Mo species displays an appealing dual functionality for the production and use of green hydrogen.Mo incorporation greatly benefits the electrochemical behaviour in Oxygen Evolution Reaction for H2 production, while the magnetocaloric response at liquid H2 temperature paves the way for alternative cryogenic refrigerants ...
Daniel Muñoz‐Gil   +14 more
wiley   +1 more source

Atomistic Mechanisms Triggered by Joule Heating Effects in Metallic Cu‐Bi Nanowires for Spintronics

open access: yesAdvanced Materials, EarlyView.
Bi doped metallic Cu nanowires are promising for spintronics thanks to the stabilization of a giant spin Hall effect. However, heat resulting from current injection forces Bi to leave solution, forcing segregation into monoatomic decorations which evolve into coherent crystalline aggregates.
Alejandra Guedeja‐Marrón   +6 more
wiley   +1 more source

Multiple solutions for semilinear elliptic boundary value problems at resonance

open access: yesElectronic Journal of Differential Equations, 1995
successful in proving the existence of weak solutions for semilinear elliptic boundary value problems at resonance. One technique involves a variational approach where solutions are characterized as saddle points for a related functional.
Steve B. Robinson
doaj  

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