Showing 241 - 260 results of 310 for search '"Wave propagation"', query time: 0.06s Refine Results
  1. 241

    Numerical Simulation of Two-Phase System of “Combustible Liquid – Solid Fuel” Combustion in a Fixed Bed by K. V. Dobrego, I. A. Koznacheev

    Published 2019-06-01
    “…The velocity of the combustion wave propagation does not differ much for the cases of upper side and bottom side ignition. …”
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    Article
  2. 242

    Numerical Studies of Particle-Gas Two-Phase Flowing through Microshock Tubes by Guang Zhang, Wei Wei Wang, Xiang Hui Su, Xiao Jun Li, Wen Hao Shen, Zhe Lin

    Published 2021-01-01
    “…Numerical results were obtained for comparison with those from experimental pressure measurement and particle visualization. Shock wave propagation was observed to agree well with experimental results from numerical simulations. …”
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    Article
  3. 243

    The Dynamic Damage Mechanisms and Failure Modes of Coal-Rock Masses under the Action of High Order P-Waves by Feng Li, Mingxin Bi, Jing Tian, Shuhao Fang

    Published 2018-01-01
    “…Based on the propagation characteristics of a plane strain and cylindrical wave control equations, this paper obtained a cylindrical wave propagation frequency equation and established a dynamic calculation model for the radial, axial, and shear stresses under high order P-waves. …”
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  4. 244

    Distribution of energy in propagation for ocean extreme wave generation in hydrodynamics laboratory by D. Fadhiliani, M. Ikhwan, M. Ramli, S. Rizal, M. Syafwan

    Published 2021-06-01
    “…In terms of position, the energy curve is symmetrical.CONCLUSION: According to Hamiltonian's description of the energy distribution, the smaller the modulation frequency, the greater the potential and kinetic energy involved in wave propagation, and vice versa. While the wave's amplitude and steepness will be greatest for a low modulation frequency, and vice versa. …”
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    Article
  5. 245

    A new strong ground motion model for predicting Peak Ground Acceleration (PGA), pseudo-acceleration spectra and displacement spectra in Iran by A.R. Hajipour, H. Moghaddam

    Published 2024-11-01
    “…Due to the inelasticity of the ground and geometric expansion, seismic waves are reduced by moving away from the center of wave propagation, which is called the attenuation of seismic waves. …”
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  6. 246

    The representative scientific results of the China Seismo-Electromagnetic Satellite by Zhima Zeren, Yanyan Yang, Rui Yan, Zhenxia Zhang, Jie Wang, He Huang, Song Xu, Hengxin Lu, Na Zhou, Jianping Huang

    Published 2025-01-01
    “…The fourth result is that statistical features of seismic-ionospheric disturbances were revealed and the direct observational evidence for the electromagnetic wave propagation models in the lithosphere-atmosphere-ionosphere was also confirmed. …”
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  7. 247
  8. 248

    Design and Characterization of Line-Waves Waveguides for Microwave Applications by Alessio Monti, Stefano Vellucci, Mirko Barbuto, Valentina Verri, Francesco Verni, Claudio Massagrande, Davide Ramaccia, Michela Longhi, Zahra Hamzavi-Zarghani, Luca Stefanini, Alessandro Toscano, Filiberto Bilotti

    Published 2025-01-01
    “…The design is based on the analytical relations existing between the surface impedance of the propagating modes and the sheet impedance of the metasurfaces, which allow quick retrieval of the geometrical parameters of the complementary metasurfaces sustaining the line-wave propagation. This approach is used to design several waveguiding layouts and compare their transmission performance through full-wave simulations accounting for dielectric and ohmic losses. …”
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    Article
  9. 249

    Experimental investigation on the anti-detonation performance of composite structure containing foam geopolymer backfill material by Hang Zhou, Hujun Li, Zhen Wang, Dongming Yan, Wenxin Wang, Guokai Zhang, Zirui Cheng, Song Sun, Mingyang Wang

    Published 2025-01-01
    “…By analyzing the stress wave propagation and the compression characteristics of the porous medium, it was concluded that the stress transfer ratio of FGCS-ρ-579 was 77% lower than that of CLS, and the transmitted wave energy was 90% lower. …”
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  10. 250

    Interface Acoustic Waves in 128° YX-LiNbO<sub>3</sub>/SU-8/Overcoat Structures by Cinzia Caliendo, Massimiliano Benetti, Domenico Cannatà, Farouk Laidoudi, Gaetana Petrone

    Published 2025-01-01
    “…Numerical analysis results showed the following: (i) an overcoat faster than the piezoelectric half-space ensures that the wave propagation is confined mainly close to the surface of the LiNbO<sub>3</sub>, although with minimal scattering in the overcoat; (ii) the presence of the SU-8, in addition to performing the essential function of an adhesive layer, can also promote the trapping of the acoustic energy toward the surface of the piezoelectric substrate; and (iii) the electromechanical coupling efficiency of the IAW is very close to that of the surface acoustic wave (SAW) along the bare LiNbO<sub>3</sub> half-space. …”
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  11. 251

    State Judgement Model of the Coal and Rock Medium and Its Engineering Application by Chuanqi Zhu, Lei Wang, Xiangang Han

    Published 2020-01-01
    “…To evaluate the damaging failure extent of the coal and rock mass and distinguish the state of the coal and rock mass medium, first, the medium state index was defined based on the acoustic wave propagation model. Then, based on the coal mass in the working face 8512 in the Chenjiagou Coal Mine in China, the acoustic character and the mechanical character experiments were conducted. …”
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  12. 252
  13. 253

    Design and Analysis of Two-Port Self-Decoupled Highly Efficient MIMO Antenna for 5G New Radio Mid-Band (n1/n2/n3) Wireless Communication by Durai Pandurangan, Naveen Mishra

    Published 2025-01-01
    “…Mutual coupling between the antenna elements is discussed using surface current distribution and surface wave propagation. The maximum isolation is -41.9dB between ports, &#x003C;0.008 envelope coefficient correlation, 9.99dB diversity gain, &#x003C;0.4bits/s/Hz channel capacity loss, less than -1dB multiplexing efficiency, -31.2dB TARC and zero mean effective gain (MEG1/MEG2) ratio are some of the salient features of the proposed design. …”
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  14. 254

    Research on ultrasonic testing method for tangential contact stress based on equivalent medium theory by Nana Niu, Yongsheng Zhao, Zhifeng Liu, Ying Li, Lele Liu

    Published 2025-01-01
    “…Moreover, the expression of the equivalent material parameters of the ultrasonic critical refracted longitudinal wave propagation layer with stress variation is derived. …”
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  15. 255

    Methodological advances in seismic noise imaging of the Alpine area by Paul, Anne, Pedersen, Helle A., Bodin, Thomas, Kästle, Emanuel, Soergel, Dorian, Alder, Chloé, Lu, Yang, Nouibat, Ahmed

    Published 2024-09-01
    “…The three-dimensional S-wave velocity models have been further improved by wave-equation based inversions accounting for the physics of seismic wave propagation, including elastic–acoustic coupling at the sea bottom. …”
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  16. 256

    Lidar Network for Temperature and Wind Measurements in the Mesosphere and Lower Thermosphere Region by Y. Yang, F. Li, X. Cheng, G. Yang, D. Lyu, X. Lin, L. Liu, X. Fang, J. Zheng, L. Du, W. Wang, L. Ren, J. Wang, J. Liang, K. Ji, L. Xu, Z. Chen, K. Ji, H. Zheng, X. Wang, Y. Wang, J. Jiao, X. Wang, X. Xue, Y. Xia, Y. Li, Z. Lin, L. Chen, Z. Chen, J. Xu, G. Li, L. Hu, S. Gong

    Published 2024-10-01
    “…Its future observations are expected to advance the understanding of atmospheric waves by studying wave propagation, chemical‐dynamical coupling processes and the horizonal structure of in the MLT region.…”
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  17. 257

    Key Considerations in the Modeling of Tropical Maritime Microwave Attenuations by Yee Hui Lee, Yu Song Meng

    Published 2015-01-01
    “…This paper presents some key considerations for modeling of over-sea radio-wave propagations in 5 GHz band. The summarized information is based on a series of measurement campaigns which were recently carried out in the tropical maritime environments near Singapore. …”
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  18. 258

    Influence of Roadway Cross-Section Shape on Gas Explosion Shock Wave Law in U-Type Ventilation Working Faces by Jiajia Liu, Mengqi Shen, Shouqi Chen, Ming Yang

    Published 2021-01-01
    “…The results are described as follows. (1) After the gas explosion shock wave propagates 40 m, the overpressure peak equidistant difference tends to be stable and attenuates and propagates in the form of a single shock wave. …”
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  19. 259

    Self-Diagnosis and Self-Reconfiguration of Piezoelectric Actuator and Sensor Network for Large Structural Health Monitoring by Dong Liang, Liaoni Wu, Zhifeng Fan, Yang Xu

    Published 2015-04-01
    “…Then, the effects of piezoelectric actuator and sensor bonding defects on Lamb wave propagations are investigated in a real-world monitoring experiment for the large aviation aluminum plate. …”
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  20. 260

    An Improved Theoretical Approach to Study Electromagnetic Waves through Fiber Bragg Gratings by Pedro Pereyra

    Published 2017-01-01
    “…We show that using the theory of finite periodic systems we obtain an improved approach to calculate transmission coefficients and transmission times of electromagnetic waves propagating through fiber Bragg gratings. We discuss similarities, advantages, and differences between this approach and the well known less accurate one coupled mode approximation and the pseudo-Floquet Mathieu functions approach.…”
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