Results 21 to 30 of about 801,940 (314)

Local and high distance neutron and gamma measurements of fuel rods oscillation experiments [PDF]

open access: yesEPJ Web of Conferences, 2021
We report in the present article on the successful observation using noise analysis of the lateral oscillation of one fuel rod by ±2.5 mm around nominal at 0.1 Hz frequency, using an mm3 miniature neutron scintillator at the rod level, and a BGO gamma ...
Lamirand Vincent   +6 more
doaj   +1 more source

Noise Level and Similarity Analysis for Computed Tomographic Thoracic Image with Fast Non-Local Means Denoising Algorithm

open access: yesApplied Sciences, 2020
Although conventional denoising filters have been developed for noise reduction from digital images, these filters simultaneously cause blurring in the images. To address this problem, we proposed the fast non-local means (FNLM) denoising algorithm which
Bae-Guen Kim   +4 more
doaj   +1 more source

NEUTRON NOISE SPECTRAL FEATURES OF SIMULATED MECHANICAL AND THERMAL-HYDRAULIC PERTURBATIONS IN A PWR CORE [PDF]

open access: yesEPJ Web of Conferences, 2021
KWU-PWR reactors (SIEMENS design) are commonly exhibiting high neutron noise levels that can lead to costly operational issues. Recent analysis seems to indicate that, coolant flow, temperature oscillations, and mechanical vibrations have a key impact on
Torres L.A   +4 more
doaj   +1 more source

The COLIBRI experimental program in the CROCUS reactor: characterization of the fuel rods oscillator [PDF]

open access: yesEPJ Web of Conferences, 2020
The present article presents the mechanical characterization of the fuel rods oscillator developed for the purposes of the COLIBRI experimental program in CROCUS. COLIBRI aims at investigating the radiation noise related to fuel vibrations.
Lamirand Vincent   +9 more
doaj   +1 more source

Extracting Seasonal Signals in GNSS Coordinate Time Series via Weighted Nuclear Norm Minimization

open access: yesRemote Sensing, 2020
Global Navigation Satellite System (GNSS) coordinate time series contains obvious seasonal signals, which mainly manifest as a superposition of annual and semi-annual oscillations.
Baozhou Chen   +4 more
doaj   +1 more source

Coexistence of quantum key distribution and optical communication with amplifiers over multicore fiber

open access: yesNanophotonics, 2023
In this paper, the influence of classical signals on quantum key distribution (QKD) is studied over multi-core fiber (MCF) when optical amplifiers exist.
Kong Weiwen   +3 more
doaj   +1 more source

Noise Prevention Research in the Hyperbaric Oxygen Chamber by Flux Vector Splitting Format

open access: yesIEEE Access, 2019
This paper describes the application of computational fluid dynamics (CFD) in noise prevention of hyperbaric oxygen chambers. The flux vector splitting format and matrix transformation are used in the calculation of flow field in the hyperbaric oxygen ...
Lin Li, Junqiang Xi, Reza Langari
doaj   +1 more source

Lithographically engineered shallow nitrogen-vacancy centers in diamond for external nuclear spin sensing

open access: yesNew Journal of Physics, 2018
The simultaneous control of the number and position of negatively charged nitrogen-vacancy (NV) centers in diamond was achieved. While single near-surface NV centers are known to exhibit outstanding capabilities in external spin sensing, trade-off ...
Ryosuke Fukuda   +22 more
doaj   +1 more source

Noise Analysis in Pre-Amplifier Circuits Associated to Highly Sensitive Optically-Pumped Magnetometers for Geomagnetic Applications

open access: yesApplied Sciences, 2020
This paper analyzes the noise sources in photoelectric detection circuits with several low-noise operational amplifiers cores. The fabricated circuits are low-noise pre-amplifiers that are used for optically pumped magnetometers. In the proposed circuits,
Leisong Liu   +4 more
doaj   +1 more source

Op-amp based low noise amplifier for magnetic particle spectroscopy

open access: yesCurrent Directions in Biomedical Engineering, 2017
Magnetic particle spectrometry (MPS) is a novel technique used to measure the magnetization response of superparamagnetic iron oxide nanoparticles (SPIONs).
Malhotra Ankit, Buzug Thorsten
doaj   +1 more source

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