Results 11 to 20 of about 5,797,722 (259)

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

Pressure ulcers: understanding the challenges of promoting quality [PDF]

open access: yes, 2010
Pressure ulcers affect quality of life and general wellbeing, and create significant difficulties for patients, their carers and families. Pressure ulcers are associated with morbidity and mortality, and prove costly for healthcare providers.
Ousey, Karen; id_orcid, Ousey, Karen
core   +5 more sources

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

Skin Sodium and Blood Pressure Regulation [PDF]

open access: yes, 2022
Hypertension is a major public health concern due to its high prevalence and increased risk of cardiovascular disease and mortality. Complex traits resulting from both genetic and environmental factors affect the development of hypertension.
박형천, 지종현, 최훈영
core   +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

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

Age-stratified and blood-pressure-stratified effects of blood-pressure-lowering pharmacotherapy for the prevention of cardiovascular disease and death: an individual participant-level data meta-analysis [PDF]

open access: yes, 2021
Background The effects of pharmacological blood-pressure-lowering on cardiovascular outcomes in individuals aged 70 years and older, particularly when blood pressure is not substantially increased, is uncertain.
Nazarzadehlarzjan, Milad   +7 more
core   +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

Innovation in measuring obese patients’ blood pressure: measurement with conical wrapping technique

open access: yes, 2021
Introduction Accurate measurement of blood pressure(BP) is difficult in obese patients due to their upper armshape and width. Errors made during BP measurementcause misdiagnosis or lead to wrong treatment.Method The data of this methodological study ...
Ayşegül Yildiz   +9 more
core   +1 more source

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