Results 11 to 20 of about 265,812 (264)

Thermal Activation and Ductile vs. Brittle Behavior of Microcracks in 3D BCC Iron Crystals under Biaxial Loading by Atomistic Simulations

open access: yesMetals, 2020
We present the results of free 3D molecular dynamics (MD) simulations, focused on the influence of temperature on the ductile-brittle behavior of a pre-existing central Griffith through microcrack (1¯10)[110] (crack plane/crack front) under biaxial ...
Alena Uhnáková   +2 more
doaj   +1 more source

Iraqi bentonite as natural pozzolan

open access: yesMagazine of Civil Engineering, 2022
In this study, Iraqi high-calcium bentonite was used for the first time to prepare natural pozzolan for concrete by the thermal activation method (calcination).
Al-Hammood Amer   +2 more
doaj   +1 more source

Thermal Activation in Permanent Magnets [PDF]

open access: yesJOM, 2015
The coercive field of permanent magnets decays with temperature. At non-zero temperature the system can overcome a finite energy barrier through thermal fluctuations. Using finite element micromagnetic simulations, we quantify this effect, which reduces coercivity in addition to the decrease of the coercive field associated with the temperature ...
S. Bance   +5 more
openaire   +2 more sources

Driven activation vs. thermal activation [PDF]

open access: yesEurophysics Letters (EPL), 2007
Activated dynamics in a glassy system undergoing steady shear deformation is studied by numerical simulations. Our results show that the external driving force has a strong influence on the barrier crossing rate, even though the reaction coordinate is only weakly coupled to the nonequilibrium system.
Ilg, Patrick, Barrat, Jean-Louis
openaire   +2 more sources

Thermal and non-thermal fluctuations in active polar gels [PDF]

open access: yesThe European Physical Journal E, 2008
We discuss general features of noise and fluctuations in active polar gels close to and away from equilibrium. We use the single-component hydrodynamic theory of active polar gels built by Kruse and coworkers to describe the cytoskeleton in cells. Close to equilibrium, we calculate the response function of the gel to external fields and introduce ...
Basu, A.   +3 more
openaire   +3 more sources

Hydrodynamics of thermal active matter [PDF]

open access: yesPhysical Review E
Active matter concerns many-body systems comprised of living or self-driven agents that collectively exhibit macroscopic phenomena distinct from conventional passive matter. Using Schwinger-Keldysh effective field theory, we develop a novel hydrodynamic framework for thermal active matter that accounts for energy balance, local temperature variations ...
Jay Armas, Akash Jain, Ruben Lier
openaire   +4 more sources

A review on the research progress of tailings activation methods

open access: yes矿业科学学报, 2022
This paper briefly introduced the current situation of tailings stockpiling and the associated resource utilization methods of tailings in China. In terms of the low activity of utilizing tailings as building materials, we summarized the research ...
Yi Longsheng   +3 more
doaj   +1 more source

Dataset of the liquid water distribution in a biomimetic PEM fuel cell

open access: yesData in Brief
This dataset gathers the initial formation and the evolution of water content and distribution, as well as water evacuation, within a lung-inspired PEM (proton exchange membrane) fuel cell with a 50 cm2 active area for various operating conditions such ...
Alfredo Iranzo   +5 more
doaj   +1 more source

Removal of Pb2+ and Zn2+ using modified Chocolate B clay: a study using statistical analysis, equilibrium isotherms, and adsorption kinetics

open access: yesCerâmica, 2021
In this work, natural and thermally modified Chocolate B clays were used for batch adsorption of Pb2+ and Zn2+ from an aqueous solution. The materials were characterized by X-ray diffraction, X-ray fluorescence spectroscopy, nitrogen adsorption, and ...
J. D. Mota   +2 more
doaj   +1 more source

Deformation behavior during partial diameter-enlarged process at high rotation speeds

open access: yesMechanical Engineering Journal, 2018
This paper presents the deformation behavior of SUS304 specimens during partial diameter-enlarged process in a rotation speed region higher than the rotation speed region of conventional diameter-enlarged processing methods.
Xia ZHU, Keiji OGI
doaj   +1 more source

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