Results 41 to 50 of about 10,784 (189)

Half-space radiation by EMATs

open access: yesJournal of Nondestructive Evaluation, 1980
A Green's function calculation of the far-field radiation patterns of EMATs is presented. The approach is based on (a) closed form expressions for the eddy current and static magnetic field distributions, established by the EMATs, which react to produce the driving Lorentz forces, and (b) a Green's function derived from the steepest descent ...
William J. Pardee, R. B. Thompson
openaire   +2 more sources

Mass, shape and thermal properties of A1689 by a multi-wavelength X-ray, lensing and Sunyaev-Zel'dovich analysis

open access: yes, 2012
Knowledge of mass and concentration of galaxy clusters is crucial to understand their formation and evolution. Unbiased estimates require the understanding of the shape and orientation of the halo as well as its equilibrium status.
Baldi, Alessandro   +3 more
core   +1 more source

Predictive value of seizure onset for gross motor dysfunction in individuals with pathogenic GABRB2 and GABRB3 variants

open access: yesEpilepsia, EarlyView.
Abstract Objective Pathogenic variants in γ‐aminobutyric acid type A (GABAA) receptor genes have been associated with a wide spectrum of neurological disorders. We aimed to delineate the clinical trajectories associated with gain‐of‐function (GoF) and loss‐of‐function (LoF) variants in GABRB2 and GABRB3, and to develop a risk‐prediction model for gross
Sebastian Ortiz   +73 more
wiley   +1 more source

Transmission Electron Microscopy on Interface Engineered Superconducting Thin Films [PDF]

open access: yes, 2003
Transmission electron microscopy is used to evaluate different deposition techniques, which optimize the microstructure and physical properties of superconducting thin films.
Bals, Sara   +5 more
core   +3 more sources

Mechanisms of SCN2A loss of function do not predict presence or phenotype of epilepsy

open access: yesEpilepsia, EarlyView.
Abstract Objective SCN2A loss‐of‐function (LoF) variants are associated with epilepsy (onset age ≥ 3 months), intellectual disability (ID), and autism spectrum disorder (ASD). Despite numerous identified variants and the description of phenotypic subgroups, relationships between Nav1.2 channel dysfunction and clinical phenotypes remain unclear.
Marsha Tan   +23 more
wiley   +1 more source

Electromagnetic Acoustic Transducers (EMAT)

open access: yes, 2007
The current accepted non-destructive evaluation methods used in the inspection of welds have several shortcomings regarding cost, false defect indications, and lack of sensitiveness to certain flaw orientations in welds.
openaire   +5 more sources

A New Design to Rayleigh Wave EMAT Based on Spatial Pulse Compression

open access: yesSensors, 2023
The main disadvantage of the electromagnetic acoustic transducer (EMAT) is low energy-conversion efficiency and low signal-to-noise ratio (SNR). This problem can be improved by pulse compression technology in the time domain.
Chuanliu Jiang   +3 more
doaj   +1 more source

An omnidirectional shear horizontal wave transducer based on ring array of face-shear (d24) piezoelectric ceramics

open access: yes, 2016
The non-dispersive fundamental shear horizontal (SH0) wave in plate-like structures is of practical importance in non-destructive testing (NDT) and structural health monitoring (SHM).
Huan, Qiang   +3 more
core   +1 more source

Epilepsy syndromes classification

open access: yesEpilepsia Open, EarlyView.
Abstract Epilepsy syndromes are distinct electroclinical entities which have been recently defined by the International League Against Epilepsy Nosology and Definitions Task Force. Each syndrome is associated with “a characteristic cluster of clinical and EEG features, often supported by specific etiologic findings”.
Elaine C. Wirrell   +4 more
wiley   +1 more source

Wannier-Stark ladders in one-dimensional elastic systems

open access: yes, 2006
The optical analogues of Bloch oscillations and their associated Wannier-Stark ladders have been recently analyzed. In this paper we propose an elastic realization of these ladders, employing for this purpose the torsional vibrations of specially ...
A. Díaz-de-Anda   +9 more
core   +1 more source

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