Results 41 to 50 of about 5,031,554 (294)

Frequency-Dependent Anisotropic Electromagnetic Responses of Fractured Reservoirs with Various Hydrate Distributions Based on Numerical Simulation

Journal of Marine Science and Engineering
Geophysical methods detecting electromagnetic properties (e.g., conductivity, relative permittivity, and dielectric loss factor) have been developed into an important tool to accurately assess the hydrate-bearing reservoirs.
Shengbiao Liu, Gaowei Hu, Qingtao Bu, Yapeng Zhao, Zhiwen Sun   +4 more
doaj   +1 more source

Role of in-situ formed free carbon on electromagnetic absorption properties of polymer-derived SiC ceramics

Journal of Advanced Ceramics, 2020
In order to enhance dielectric properties of polymer-derived SiC ceramics, a novel single-source-precursor was synthesized by the reaction of an allylhydrido polycarbosilane (AHPCS) and divinyl benzene (DVB) to form carbon-rich SiC. As expected, the free
Zhaoju Yu, Xuan Lv, Kangwei Mao, Yujing Yang, Anhua Liu   +4 more
doaj   +1 more source

The magnetic permeability signature in high-frequency electromagnetic data modeling: a case study for GPR approximation

Frontiers in Earth Science
Ground penetrating Radar (GPR) is a high-frequency geophysical prospecting method whose signal is affected by dielectric permittivity (ε), electrical conductivity (σ) and magnetic permeability (μ), but it is common practice to assume that magnetic ...
Alejandra I. Sánchez, Luis A. Gallardo
doaj   +1 more source

Effect of graphene oxide on the corrosion resistance and electromagnetic propertiese of FeSiAl alloy powders

Fenmo yejin jishu, 2021
To improve the corrosion resistance of the FeSiAl (FSA) alloys in the salt spray environment, the para-aminobenzoic acid (PABA) and graphene oxide (GO) were sequentially grafted and coated on the surface of the FeSiAl alloy powders to form the FSA/PABA ...
GUO Yang, HU Li-ming
doaj   +1 more source

Electromagnetic flowmeters in multiphase flows [PDF]

, 1993
The response of an Electromagnetic Flowmeter to a secondary, nonconducting phase in a continuous conducting phase is investigated. Experiments are carried out on a commercial 2" Foxboro flowmeter with sinusoidal mains field excitation and point ...
Krafft, Rainer
core   +2 more sources

Considerations of uncertainty in robust optimisation of electromagnetic devices

, 2014
Due to unavoidable uncertainties related to material properties and manufacturing processes, the robustness of the optimal solution must be considered when designing electromagnetic devices.
Rotaru, Mihai, Li, Yinjiang, Sykulski, Jan K., Song, Xiao   +3 more
core   +1 more source

Double-walled carbon nanotube-based polymer composites for electromagnetic protection. [PDF]

, 2010
In this paper, we present a microwave absorber based on carbon nanotubes (CNT) dispersed inside a BenzoCycloButenw (BCB) polymer. The high aspect ratio and remarkable conductive characteristics of CNT give rise to good absorbing properties for ...
Flahaut, Emmanuel, Katia Grenier, Sébastien Pacchini, Dubuc, David, Grenier, Katia, David Dubuc, Emmanuel Flahaut, Pacchini, Sébastien   +7 more
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Electromagnetic and radar absorption characteristics of iron/epoxy polymer composites based on dispersion and mixing ratios of iron particles with different particle sizes

Materials Research Express
This study proposes a single-layer radar absorber using iron (Fe) powder and epoxy. Two types of Fe particles with different particle sizes were utilized as fillers to impart electromagnetic(EM) properties to the epoxy.
Daekyeong Jung, Won-Ho Choi, Sung-Won Hong, Sun Hong Yoon   +3 more
doaj   +1 more source