Showing 381 - 400 results of 433 for search '"electromagnetic theory"', query time: 0.40s Refine Results
  1. 381

    Theoretical and Numerical Study of Eddy Current Pulsed Thermography to Detect Damage of Deep-Sea Manned Pressure Hull by Yu Wu, Chaohua Zhang, Fang Wang, Chao Yang

    Published 2023-07-01
    “…A theoretical model is established using electromagnetic theory and heat transfer theory. Moreover, the temperature difference between the cracked area and the non-cracked area can be obtained by solving the heat conduction equation. …”
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    Article
  2. 382

    Investigation of Optical Properties and Activity of Wheat Stripe Rust Urediospores by Xu Chen, Zhifeng Yao, Dongjian He

    Published 2023-06-01
    “…Further, the optical parameters, such as reflection phase shift, complex refractive index, and dielectric constant, of the urediospores were analyzed based on electromagnetic theory and Kramers–Kronig relation. The results revealed that the urediospores have a strong tolerance to near-infrared light, and the real part of the complex refractive index <i>n</i> was between 1.0 and 1.4. …”
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    Article
  3. 383

    Post-Newtonian limit: second-order Jefimenko equations by David Pérez Carlos, Augusto Espinoza, Andrew Chubykalo

    Published 2020-07-01
    “…The Heaviside field is known in general relativity as Lense-Thirring effect or gravitomagnetism (The Heaviside field is the gravitational analogous of the magnetic field in the electromagnetic theory, its existence was proved employing the Gravity Probe B launched by NASA (See, for example, [11, 12]). …”
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    Article
  4. 384

    Analysis of the Light Propagation Model of the Optical Voltage Sensor for Suppressing Unreciprocal Errors by Hui Li, Zhida Fu, Liying Liu, Zhili Lin, Wei Deng, Lishuang Feng

    Published 2017-01-01
    “…The key parameters pertaining to the system reciprocity degeneration in the dual-crystal sensing unit are investigated in order to optimize the optical sensing model based on the Maxwell's electromagnetic theory. The influencing principle of axis-angle errors on the system nonlinearity in the Pockels phase transfer unit is analyzed. …”
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    Article
  5. 385

    Electromagnetic response characteristics of small coil device for mine transient electromagnetic method by Shi Zhihao, Cheng Jiulong, Xu Zhongzhong, Jiang Guoqing

    Published 2023-06-01
    “…The study of the transient electromagnetic detection device with small sized coil and easy installation underground will offer new insights into the real-time dynamic exploration and forecast water-bearing structure in excavation roadway.By drawing on the full-space transient electromagnetic theory, this paper adopted the three-dimensional time-domain finite element method for numerical simulation to explore the characteristics of the secondary field response obtained by small coil excitation and the transient electromagnetic response received by the magnetic core coil.This study constructed a geological-geophysical model of the water-bearing fault in front of the roadway excavation working face, studied the transient electromagnetic response characteristics of the small coil device for the water-bearing fault, and compared the effects of small coil and conventional coil in advance detection.The study shows that : ①the decay law of the induced electric potential generated by the small coil source excitation is the same as that of the induced electric potential generated by the conventional transmitting coil with time, ②the magnetic core coil can effectively improve the induced signal strength, ③the application of both the small coil device and the conventional coil device can effectively explain the distribution range of the low resistance area, ④the detection results match the verification results of the roadway excavation.Combined with the underground field test, this paper verified the applicability and effectiveness of the small coil device applied to mine transient electromagnetic method advance detection.…”
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    Article
  6. 386

    Dispersive surface-response formalism to address nonlocality in extreme plasmonic field confinement by Babaze Antton, Neuman Tomáš, Esteban Ruben, Aizpurua Javier, Borisov Andrei G.

    Published 2023-06-01
    “…The surface-response formalism (SRF), where quantum surface-response corrections are incorporated into the classical electromagnetic theory via the Feibelman parameters, serves to address quantum effects in the optical response of metallic nanostructures. …”
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    Article
  7. 387

    Exploring the High Frequencies AC Conductivity Response in Disordered Materials by Using the Damped Harmonic Oscillator by Christos Tsonos

    Published 2022-07-01
    “…The present work is based on the definitions of electromagnetic theory as well as the Havriliak–Negami equation and the damped harmonic oscillator equation, which are widely used for the description of dielectric relaxation mechanisms and vibration modes in the THz frequency region, respectively. …”
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  8. 388
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  10. 390

    Toroidal dipolar excitation and macroscopic electromagnetic properties of metamaterials by Zheludev, Nikolay I., Savinov, V., Fedotov, V. A.

    Published 2014
    “…To address this essential gap in the electromagnetic theory, we have developed an analytical approach for calculating the transmissivity and reflectivity of thin slabs of materials that exhibit toroidal dipolar excitations.…”
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    Journal Article
  11. 391
  12. 392

    Radar Cross Section Near-Field to Far-Field Prediction for Isotropic-Point Scattering Target Based on Regression Estimation by Yang Liu, Weidong Hu, Wenlong Zhang, Jianhang Sun, Baige Xing, Leo Ligthart

    Published 2020-10-01
    “…Existing methods employ electromagnetic theory to transform near-field data into the far-field radar cross section, which is time-consuming in data processing. …”
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    Article
  13. 393

    Numerical simulation and experimental verification of droplet transfer during local dry underwater MIG welding process of SUS304 by Haipeng Liao, Wenxu Zhang, Xuyan Li, Kai Pei, Sanbao Lin, Jiyu Tian, Zhenmin Wang

    Published 2022-11-01
    “…Based on the fluid mechanics and electromagnetic theory, a numerical simulation model of droplet transfer during local dry underwater MIG welding (LDU-MIG) of SUS304 was established by using fluid dynamics software FLUENT. …”
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    Article
  14. 394

    Free convection channel flow of couple stress casson fluid: A fractional model using Fourier’s and Fick’s laws by Shafiq Ahmad, Sami Ul Haq, Farhad Ali, Ilyas Khan, Sayed M. Eldin

    Published 2023-02-01
    “…The fractional derivative has been successfully used to describe various fundamental processes, including coiling polymer, viscoelasticity, traffic construction, diffusive transport, fluid dynamics, electromagnetic theory and electrical networks. However, many researchers do not use fractional derivatives to understand the physical properties of a non-Newtonian fluid that flows over a moving plate. …”
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    Article
  15. 395

    Study of the length and influencing factors of air plasma ignition time by Wang Guixia, Su Junhong

    Published 2022-08-01
    “…The reasons for the changes are analyzed from the perspectives of multiphoton absorption, cascade ionization theory, and electromagnetic theory of laser breakdown gas. The results show that when the laser pulse width is 10 ns, the energy is 160 mJ, and the spot radius is 0.015 cm. …”
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    Article
  16. 396

    Investigation on Distributed Vibration Damping of Bridge Based on Energy Harvesting Technique and Finite Element Analysis by Hailu Yang, Qun Chen, Huifang Liu, Haoran Chang, Shih-Hsien Yang, Linbing Wang, Pengfei Liu

    Published 2022-12-01
    “…Firstly, the analytical solutions of the induced electromotive force, output power and magnetic damping generated by a coil in a magnetic field were deduced through an electromagnetic theory analysis. In addition, the structural vibration equation under the magnetic damping was deduced. …”
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    Article
  17. 397

    Self-affine subglacial roughness: consequences for radar scattering and basal water discrimination in northern Greenland by T. M. Jordan, M. A. Cooper, D. M. Schroeder, C. N. Williams, J. D. Paden, M. J. Siegert, J. L. Bamber

    Published 2017-05-01
    “…Here, using RES data from northern Greenland, we introduce a self-affine statistical framework that enables a consistent integration of topographic-scale roughness with the electromagnetic theory of radar scattering. We demonstrate that the degree of radar scattering, quantified using the waveform abruptness (pulse peakiness), is topographically controlled by the Hurst (roughness power law) exponent. …”
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  18. 398
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  20. 400

    Hierarchical pore structure with a confined resonant mode for improving the solar energy utilizing efficiency of ultra-thin perovskite solar cells by Zhang, Xinping, Du, Jiaxin, Wang, Fuqiang, Xu, Zenghui, Li, Xiang, Liang, Huaxu, Yi, Hongliang

    Published 2024
    “…In this study, a hierarchical pore structure with a confined resonant mode is introduced and optimized by electromagnetic theory to improve the solar energy absorbing and utilizing efficiency of ultra-thin PSCs. …”
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    Journal Article