Results 71 to 80 of about 44,989 (286)

A direct D-bar reconstruction algorithm for recovering a complex conductivity in 2-D [PDF]

, 2012
A direct reconstruction algorithm for complex conductivities in $W^{2,\infty}(\Omega)$, where $\Omega$ is a bounded, simply connected Lipschitz domain in $\mathbb{R}^2$, is presented.
A Von Herrmann, Bukhgeim A L, C N L Herrera, Calderón A P, DeAngelo M, Faddeev L D, Francini E, Frerichs I, Frerichs I, Hamilton S J, Isaacson D, J L Mueller, Knudsen K, Knudsen K, Knudsen K Lassas M Mueller J L Siltanen S, Murphy E, S J Hamilton, Siltanen S, Siltanen S, Tidswell A T, Vainikko G, Von Herrmann A   +21 more
core   +3 more sources

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

Advanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky, Marcelo Sallese, Leander Kläber, Clemens Kuhn, Keming Du, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +1 more source

Abdominal Perfusion visualized by Electrical Impedance Tomography

Current Directions in Biomedical Engineering
The perfusion diagnostic of the abdomen, especially the liver, is usually done via computer tomography, which implies radiation exposure for the patient. Based on a standard electrical impedance tomograph (EIT) it was investigated, if abdominal perfusion
Laufer Bernhard, Krueger- Ziolek Sabine, Moeller Knut   +2 more
doaj   +1 more source

A Wearable Open-Source electrical impedance tomography device

HardwareX
Electrical impedance tomography (EIT) is medical imaging technique in which small electrical signals are used to map the electrical impedance distribution within the body.
Andrew Creegan, Joshua Bradfield, Samuel Richardson, Llewellyn Sims Johns, Kelly Burrowes, Haribalan Kumar, Poul M.F. Nielsen, Merryn H. Tawhai   +7 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Multifrequency image reconstruction for electrical impedance tomography

Current Directions in Biomedical Engineering
Electrical Impedance Tomography (EIT) is a medical imaging technique that is primarily used to monitor the respiration of a patient. Because EIT is based on electrical measurements, it is a safe, non-invasive, and cost-effective imaging technique ...
Battistel Alberto, Wilkie Jack, Chen Rongqing, Möller Knut   +3 more
doaj   +1 more source

Use of electrical impedance tomography for lung volume reconstruction

Journal of Modern Science
The article presents a study of the application of electro-impedance tomography (EIT) in diagnosing lung capacity using the Tikhonov regularization method. The possibility of reconstructing the lungs to monitor the degree of air filling was investigated.
Paweł Tchórzewski, Małgorzata Lalak - Dybała, Bartosz Przysucha, Paweł Olszewski   +3 more
doaj   +1 more source

Electrical impedance tomography in acute respiratory distress syndrome

Critical Care, 2018
Acute respiratory distress syndrome (ARDS) is a clinical entity that acutely affects the lung parenchyma, and is characterized by diffuse alveolar damage and increased pulmonary vascular permeability.
M Consuelo Bachmann, Caio Morais, Guillermo Bugedo, Alejandro Bruhn, Arturo Morales, João B Borges, Eduardo Costa, Jaime Retamal   +7 more
doaj   +1 more source

Reconstructing conductivities with boundary corrected D-bar method [PDF]

, 2011
The aim of electrical impedance tomography is to form an image of the conductivity distribution inside an unknown body using electric boundary measurements.
Janne, P. Tamminen, Samuli Siltanen
core