Results 31 to 40 of about 6,489,351 (253)

Effects of metal particle material on surface flashover performance of alumina-filled epoxy resin spacers in SF6/N2 mixtures under DC voltage

open access: yesAIP Advances, 2019
When metal particle is attached on spacer surface, it will distort surface electric field and may reduce surface insulation level. Therefore, it is important to research the relationship between metal particle attachment and surface flashover property ...
Han Wang   +5 more
doaj   +1 more source

Biochemodynamic Features of Metal Ions Bound by Micro- and Nano-Plastics in Aquatic Media

open access: yesFrontiers in Chemistry, 2018
A simple model, based on spherical geometry, is applied to the description of release kinetics of metal species from nano- and micro-plastic particles.
Raewyn M. Town   +3 more
doaj   +1 more source

Enhanced Light Emission from Erbium Doped Silicon Nitride in Plasmonic Metal-Insulator-Metal Structures

open access: yes, 2009
Plasmonic gratings and nano-particle arrays in a metal-insulator-metal structures are fabricated on an erbium doped silicon nitride layer. This material system enables simple fabrication of the structure, since the active nitride layer can be directly ...
Chandler   +24 more
core   +2 more sources

Active Motion of Janus Particle by Self-thermophoresis in Defocused Laser Beam

open access: yes, 2010
We study self-propulsion of a half-metal coated colloidal particle under laser irradiation. The motion is caused by self-thermophoresis: i.e. absorption of laser at the metal-coated side of the particle creates local temperature gradient which in turn ...
Jiang, Hong-Ren   +2 more
core   +1 more source

Lithium-6: A Probe of the Early Universe [PDF]

open access: yes, 2000
I consider the synthesis of 6Li due to the decay of relic particles, such as gravitinos or moduli, after the epoch of Big Bang Nucleosynthesis. The synthesized 6Li/H ratio may be compared to 6Li/H in metal-poor stars which, in the absence of stellar ...
B. D. Fields   +29 more
core   +2 more sources

Surface Charge Accumulation on Basin-Shape Insulator in Various Eco-Friendly Gases with Metal Particle Under AC Voltage

open access: yesEnergies
Surface charge accumulation is considered one of the key factors that lead to unexpected insulator flashover failures in gas-insulated switchgear (GIS).
Xiaohui Duan   +5 more
doaj   +1 more source

The preparation of spherical metal powders using the high-temperature remelting spheroidization technology

open access: yesMaterials & Design, 2021
In this paper, a novel technology to prepare spherical metal powder was proposed. Several spherical metal powders were fabricated successfully by using the high-temperature remelting spheroidization (HRS) technology.
Qipeng Bao   +4 more
doaj   +1 more source

Rate equations for Coulomb blockade with ferromagnetic leads

open access: yes, 2004
We present a density-matrix rate-equation approach to sequential tunneling through a metal particle weakly coupled to ferromagnetic leads. The density-matrix description is able to deal with correlations between degenerate many-electron states that the ...
H. Grabert   +10 more
core   +1 more source

Theoretical study on hydrogenation catalysts containing a metal hydride as additional hydrogen supply [PDF]

open access: yes, 1992
A hypothetical hydrogenation catalyst consisting of porous, catalytically active particles embedded with metal hydride powder was evaluated. The metal hydride provides temporarily additional hydrogen if the mass transfer rate of the hydrogen to the ...
Snijder, E.D.   +2 more
core   +5 more sources

Effect of proppant impingement on flow-induced corrosion of tubular steel super 13Cr via CFD and experiment

open access: yesEgyptian Journal of Petroleum, 2018
Data from a standard laboratory test including open-circuit potential (OCP) and current density monitoring is used to study the effect of fracturing proppant impingement on corrosion of tubular steel. A solid-liquid flow simulation is performed to obtain
J.R. Cheng   +4 more
doaj   +1 more source

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