Results 1 to 10 of about 10,535,256 (359)

Research on Energy Conversion in the Arc-Extinguishing Process of a Long-Gap Gas Lightning-Protection Device

open access: yesEnergies, 2022
In this paper, a two-dimensional axisymmetric module of gas arc extinguishing was simulated using energy balance theories. We used simulation to study the energy distribution change during the gas arc-extinguishing process.
Qiwen He   +7 more
doaj   +1 more source

Role of dislocations in nitride laser diodes with different indium content

open access: yesScientific Reports, 2021
In this work we investigate the role of threading dislocations in nitride light emitters with different indium composition. We compare the properties of laser diodes grown on the low defect density GaN substrate with their counterparts grown on sapphire ...
Agata Bojarska-Cieślińska   +6 more
doaj   +1 more source

Characterization of Astaxanthin Nanoemulsions Produced by Intense Fluid Shear through a Self-Throttling Nanometer Range Annular Orifice Valve-Based High-Pressure Homogenizer

open access: yesMolecules, 2021
Stable, oil-in-water nanoemulsions containing astaxanthin (AsX) were produced by intense fluid shear forces resulting from pumping a coarse reagent emulsion through a self-throttling annular gap valve at 300 MPa.
Gary B. Smejkal   +4 more
doaj   +1 more source

Bidirectional light-emitting diode as a visible light source driven by alternating current

open access: yesNature Communications, 2023
Gallium nitride-based light-emitting diodes have revolutionized the lighting market by becoming the most energy-efficient light sources. However, the power grid, in example electricity delivery system, is built based on alternating current, which raises ...
Mikołaj Żak   +10 more
doaj   +1 more source

Tunability of the spin reorientation transitions with pressure in NdCo5 [PDF]

open access: yes, 2020
We present pressure-dependent magnetization measurements carried out in the domain of the spin reorientation transitions (SRTs) of a NdCo5 single crystal. The application of a hydrostatic pressure leads to a shift in the SRTs to higher temperatures. This
Balakrishnan, Geetha   +5 more
core   +1 more source

Plasmons in AlGaN/GaN grating-gate structure probing with 300 K background illumination

open access: yesAIP Advances, 2023
We show that terahertz plasmons in AlGaN/GaN grating-gate structures efficiently modulate the reflection of room temperature thermal radiation, leading to spectra that are in agreement with the measurements of plasmon absorption using high-power external
M. Dub   +8 more
doaj   +1 more source

Pressure, Pressure, It’s All About Pressure! [PDF]

open access: yes, 2022
AbstractThe airplane or wing designer seeks to harness the pressure forces associated with the motion of air. These have important consequences for the operation of an airplane in flight because the forces on it must be balanced and flight should be stable. We examine the various descriptive pressures that are relevant and look at airfoil and wing data
openaire   +1 more source

The impact of point defects in n-type GaN layers on thermal decomposition of InGaN/GaN QWs

open access: yesScientific Reports, 2021
The aim of this paper is to give an experimental evidence that point defects (most probably gallium vacancies) induce decomposition of InGaN quantum wells (QWs) at high temperatures.
Mikolaj Grabowski   +10 more
doaj   +1 more source

Nano- and microsized heterodiamonds obtained from mixtures of carbon nitride and melamine with boron [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2017
The paper presents experimental results of the synthesis under high pressure and temperature conditions of individual nano- and micron-sized heterodiamond crystals from mixtures of carbon nitride and melamine with boron.
V.P. Filonenko   +2 more
doaj   +1 more source

Pressure alopecia

open access: yesInternational Journal of Trichology, 2012
Postoperative or pressure alopecia (PA) is an infrequently reported group of scarring and non-scarring alopecias. It has been reported after immobilization of the head during surgery and following prolonged stays on intensive care units, and may be analogous to a healed pressure ulcer. This review presents a summary of cases published in pediatrics and
Davies, Kate E, Yesudian, PD
openaire   +3 more sources

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