Results 101 to 110 of about 49,303 (301)

3D direct and inverse solvers for eddy current testing of deposits in steam generator

open access: yes, 2014
We consider the inverse problem of estimating the shape profile of an unknown deposit from a set of eddy current impedance measurements. The measurements are acquired with an axial probe, which is modeled by a set of coils that generate a magnetic field ...
Haddar, Houssem, Riahi, Mohamed Kamel
core   +1 more source

Diffusion MRI and α‐Synuclein Seed Amplification Status in Parkinson's Disease

open access: yesAnnals of Neurology, EarlyView.
Objective Positive α‐synuclein seed amplification assay (SAA) is a biomarker found in most people with Parkinson's disease (PD). We explored if free‐water (FW) imaging detects microstructural differences in the brains of patients with early PD with SAA+ or SAA– status.
Shannon Y. Chiu   +145 more
wiley   +1 more source

A Wide Linear Range Eddy Current Displacement Sensor Equipped with Dual-Coil Probe Applied in the Magnetic Suspension Flywheel

open access: yesSensors, 2012
The Eddy Current Displacement Sensor (ECDS) is widely used in the Magnetic Suspension Flywheel (MSFW) to measure the tiny clearance between the rotor and the magnetic bearings. The linear range of the ECDS is determined by the diameter of its probe coil.
Tong Wen, Jiancheng Fang
doaj   +1 more source

Research on Relative Position and Attitude Measurement of Space Maglev Vibration Isolation Control System

open access: yesApplied Sciences
The working accuracy of space optical payloads, sensitive components, greatly depends on the pointing accuracy and stability of the platform. This article establishes a mathematical model for relative position and attitude measurement based on PSD and ...
Mao Ye, Jianyu Wang
doaj   +1 more source

SRF Cavity Fabrication and Materials

open access: yes, 2015
The technological and metallurgical requirements of material for highgradient superconducting cavities are described. High-purity niobium, as the preferred metal for the fabrication of superconducting accelerating cavities, should meet exact ...
Singer, W
core   +1 more source

Poseidon's Sanctuary at Samikon—The Discovery of an Ancient Temple Through an Integrated Geophysical and Geoarchaeological Survey Approach for Lagoonal and Swampy Environments

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT Below the classical fortress of Samikon at the coast of the western Peloponnese, ancient writer Strabo mentioned a sanctuary of Poseidon which served as the centre of the religious association of the Triphylian cities. In this paper, we describe the discovery and investigation of a building structure by means of geophysical and ...
Dennis Wilken   +10 more
wiley   +1 more source

Design of High Damping Elastic Metamaterial Based on Eddy Current Effects for Superior Vibration Attenuation

open access: yesShock and Vibration
Elastic metamaterials can achieve effective vibration suppression within a narrow bandgap frequency range but demonstrate limited vibration control capability outside the bandgap range.
Jian Yang, Cheng Shen, Han Meng
doaj   +1 more source

Measuring the Impact: Magnetic Resonance Imaging Response of Sacroiliac Joints to Tumor Necrosis Factor Inhibitors in Youth With Axial Disease

open access: yesArthritis &Rheumatology, EarlyView.
Objective To evaluate the timeline for resolution of sacroiliac joint (SIJ) inflammation, changes in structural lesions, and their correlation with patient‐reported outcomes (PROs) in youth with axial juvenile spondyloarthritis (axJSpA) initiating tumor necrosis factor inhibitor (TNFi).
Timothy G. Brandon   +8 more
wiley   +1 more source

Applications of non-destructive testing techniques for post-process control of additively manufactured parts

open access: yesVirtual and Physical Prototyping, 2017
This paper presents an overview on the principle of operation for post-process inspection non-destructive testing (NDT) techniques. The techniques include visual inspection, liquid penetrant testing, magnetic particle testing, eddy current testing ...
Q. Y. Lu, C. H. Wong
doaj   +1 more source

Unveiling Endotypes in Systemic Lupus Erythematosus Through Multiomic Analysis: Insights Into Cardiovascular and Renal Complications

open access: yesArthritis &Rheumatology, EarlyView.
Objective Systemic lupus erythematosus (SLE) shows clinical and molecular heterogeneity, and cardiovascular (CV) complications and lupus nephritis (LN) remain leading causes of morbidity and mortality. This study investigated whether omic profiling can reveal molecular endotypes linked to these outcomes.
Tomás Cerdó   +84 more
wiley   +1 more source

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