Results 11 to 20 of about 34,631,452 (311)

Phase Analysis of Series Arc Signals for Low-Voltage Electrical Devices

open access: yesEnergies, 2020
An arc fault is an electrical breakdown of the insulating medium in an electrical system. When arc faults occur, they cause electrical fires with local sparks and temperatures of over 5000 °C.
Hong-Keun Ji   +2 more
doaj   +1 more source

Preparation of Certified Reference Materials of Sillimanite for Chemical Composition Analysis

open access: yesYankuang ceshi, 2017
With an increasing utilization of sillimanite, some reference materials of sillimanite for chemical composition have been developed in countries such as the UK, South Africa and Japan.
XU Chun-xue   +5 more
doaj   +1 more source

Experiment and Application Study of Two-component Composite Grouting Material for Mine

open access: yesMeikuang Anquan, 2020
In order to develop a green grouting material, portland cement, sulphoaluminate cement and loess, fly ash and zeolite powder were used as the substrate.
BAI Longjian, YAN Guochao
doaj   +1 more source

Analysis of Phase Noise in Phase/Frequency Detectors [PDF]

open access: yesIEEE Transactions on Circuits and Systems I: Regular Papers, 2013
The phase noise of phase/frequency detectors can significantly raise the in-band phase noise of frequency synthesizers, corrupting the modulated signal. This paper analyzes the phase noise mechanisms in CMOS phase/frequency detectors and applies the results to two different topologies.
Aliakbar Homayoun, Behzad Razavi
openaire   +1 more source

Phase State Analysis Method and Application of Molybdenum in Soil Samples of Special Landscape Exploration in Heilongjiang Province

open access: yesYankuang ceshi, 2019
BACKGROUND Over the years, the total anomaly analysis results of geochemical exploration have found that there are not many deposits. Under the conditions of epigenetic conditions, different elements have different migration and deposition laws and ...
GE Jiang-hong   +3 more
doaj   +1 more source

Field equivalent modeling analysis of wireless charging system with metal foreign objects

open access: yes电力工程技术, 2023
In the wireless charging system, the power transmission follows the magnetic coupling relationship between the transmitting coil and receiving coil. When there are metal foreign objects between the transmitting coil and receiving coil, the eddy current ...
SU Wenbo   +4 more
doaj   +1 more source

Abrupt phase change in graphene-gold spr-based biosensor

open access: yesMaterials Research Express, 2020
The performance of surface plasmon resonance (SPR) sensors can be different depending on which characteristic of the SPR sensor the amplitude or the phase is monitored.
Nasrin Bouzari   +3 more
doaj   +1 more source

Influence of High-Temperature Oxidizing Conditions on AlCoCrCuNi High Entropy Alloys with and without Silicon Addition [PDF]

open access: yesArchives of Metallurgy and Materials, 2022
Initial investigations on oxidation behaviour and phase transformations of equimolar AlCoCrCuNi high entropy alloy with and without 1 at.% silicon addition during 24-hr exposure to air atmosphere at 1273 K was carried out in this work.
R. Gawel   +3 more
doaj   +1 more source

From Data Management to Actionable Findings: A Five-Phase Process of Qualitative Data Analysis

open access: yesInternational Journal of Qualitative Methods, 2023
This article outlines a five-phase process of qualitative analysis that draws on deductive (codes developed a priori) and inductive (codes developed in the course of the analysis) coding strategies, as well as guided memoing and analytic questioning, to ...
Andrea J. Bingham
semanticscholar   +1 more source

Time-phase bispectral analysis [PDF]

open access: yesPhysical Review E, 2003
Bispectral analysis, a technique based on high-order statistics, is extended to encompass time dependence for the case of coupled nonlinear oscillators. It is applicable to univariate as well as to multivariate data obtained, respectively, from one or more of the oscillators.
Jamek, Jamsek   +3 more
openaire   +2 more sources

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