Results 61 to 70 of about 44,515 (283)

Elinvar Materials: Recent Progress and Challenges

Advanced Engineering Materials, EarlyView.
Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley   +1 more source

Extraction of cardiac and respiration signals in electrical impedance tomography based on independent component analysis

Journal of Electrical Bioimpedance, 2013
Electrical Impedance Tomography (EIT) has successive wide range in impedance imaging, but still it is difficult to extract cardiac-related conductivity changes and respiratory-related conductivity changes in spontaneous breathing subjects.
Rahman T., Hasan M.M, Farooq A., Uddin M. Z.   +3 more
doaj   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 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

Optimal depth-dependent distinguishability bounds for electrical impedance tomography in arbitrary dimension

, 2019
The inverse problem of electrical impedance tomography is severely ill-posed. In particular, the resolution of images produced by impedance tomography deteriorates as the distance from the measurement boundary increases.
Garde, Henrik, Hyvönen, Nuutti
core   +1 more source

Enhanced Gamma Radiation Shielding Using Epoxy Quartz Fabric Composites Reinforced With CoCl2 Microparticles

Advanced Engineering Materials, EarlyView.
The growing demand for lightweight, nontoxic, and multifunctional gamma shielding materials has intensified efforts to find alternatives to conventional lead and aluminum‐based protectants. In this work, we develop epoxy quartz fabric composites reinforced with cobalt chloride (CoCl2) microparticles, fabricated via hand lay‐up with varying filler ...
Summan Urooge, Ahsan Irshad, Umar Jamil, Srosh Fazil, Khuram Liaqat, Kashif Shahzad, Fakhar Alam, Mehboob Alam   +7 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