Suggested Topics within your search.
Showing 1,241 - 1,260 results of 1,433 for search '"acoustics"', query time: 0.09s Refine Results
  1. 1241

    New exact soliton wave solutions appear in optical fibers with Sardar sub equation and new auxiliary equation techniques by Umair Asghar, Muhammad Imran Asjad, Yasser Salah Hamed, Ali Akgul, Murad Khan Hassani

    Published 2025-02-01
    “…This model is used to study the interaction between ion-acoustic waves and electron plasma waves. This helps in understanding energy transfer and wave stability in plasma, which is essential for applications like fusion energy research and space plasma. …”
    Get full text
    Article
  2. 1242

    Chiral exceptional point enhanced active tuning and nonreciprocity in micro-resonators by Hwaseob Lee, Lorry Chang, Ali Kecebas, Dun Mao, Yahui Xiao, Tiantian Li, Andrea Alù, Sahin K. Özdemir, Tingyi Gu

    Published 2025-01-01
    “…Abstract Exceptional points (EPs) have been extensively explored in mechanical, acoustic, plasmonic, and photonic systems. However, little is known about the role of EPs in tailoring the dynamic tunability of optical devices. …”
    Get full text
    Article
  3. 1243

    State-of-the-Art Detection and Diagnosis Methods for Rolling Bearing Defects: A Comprehensive Review by Bojun Sun, Zixin Sheng, Peng Song, Huilin Sun, Fei Wang, Xiaogang Sun, Junyan Liu

    Published 2025-01-01
    “…It discusses methods based on vibration analysis, acoustic methods, current-based methods, electromagnetic methods, infrared methods, radiographic methods, visual methods, and intelligent detection methods. …”
    Get full text
    Article
  4. 1244

    Exponential distribution of wave-driven near-bed water speeds under short-crested waves: a case study in the eastern Gulf of Riga, the Baltic Sea by Maris Eelsalu, Laura Piho, Juris Aigars, Loreta Kelpšaitė-Rimkienė, Vitalijus Kondrat, Maarja Kruusmaa, Kevin E. Parnell, Asko Ristolainen, Ilona Šakurova, Māris Skudra, Maija Viška, Tarmo Soomere

    Published 2025-01-01
    “…This array is complemented by an acoustic Doppler velocimeter (ADV). The average background current is very weak, approximately 0.003 m/s in the measurement location. …”
    Get full text
    Article
  5. 1245

    Effects of two different cooling impact treatments on the thermal damage and mechanical properties of high-temperature granite by Xingchen Liu, Feng Huang, Aichen Zheng, Dong Yang

    Published 2025-02-01
    “…The stage damage characteristics of the rock were analyzed in terms of mechanical deformation, acoustic emission, and temperature field. A rock brittleness evaluation method for the entire deformation process, considering the stress–strain relationship and energy storage–dissipation mechanism of rocks, is proposed. …”
    Get full text
    Article
  6. 1246

    Key Intelligent Pesticide Prescription Spraying Technologies for the Control of Pests, Diseases, and Weeds: A Review by Kaiqiang Ye, Gang Hu, Zijie Tong, Youlin Xu, Jiaqiang Zheng

    Published 2025-01-01
    “…In the target information acquisition section, target identification technologies based on images, remote sensing, acoustic waves, and electronic nose are introduced. …”
    Get full text
    Article
  7. 1247

    Combined drug delivery and treatment monitoring using a single high frequency ultrasound system by Yesna O. Yildiz, Jia-Ling Ruan, Michael D. Gray, Luca Bau, Richard J. Browning, Christophoros Mannaris, Anne E. Kiltie, Borivoj Vojnovic, Eleanor Stride

    Published 2024-12-01
    “…Ultrasound-mediated drug delivery is typically performed using transducers with center frequencies [Formula: see text]1 MHz to promote acoustic cavitation. Such frequencies are not commonly used for diagnostic ultrasound due to limited spatial resolution. …”
    Get full text
    Article
  8. 1248

    Classifying vocal responses of broilers to environmental stressors via artificial neural network by T. Lev-ron, Y. Yitzhaky, I. Halachmi, S. Druyan

    Published 2025-01-01
    “…This study aims to classify various stress calls in broilers exposed to cold, heat, or wind, using acoustic signal processing and a transformer artificial neural network (ANN). …”
    Get full text
    Article
  9. 1249

    Experimental Study on the Fracture Evolution Processof Rock-like Specimens Containing a Closed RoughJoint Based on 3D-Printing Technology by Jiawei Liu, Haijian Su, Hongwen Jing, Chengguo Hu, Qian Yin

    Published 2020-01-01
    “…Besides, digital image correlation (DIC) method and acoustic emission (AE) system are used to investigate the whole evolution process of strain fields and crack propagation during loading. …”
    Get full text
    Article
  10. 1250

    Can laser irradiation improve the strength of weak rock mass? by Xiaowei Feng, Peng Huang, Valter Carvelli, Gongshun Lin, Chuankai Zhu, Fengzhen He

    Published 2025-01-01
    “…Multi-technique observations and measurements were used to fully understand the peculiar modifications of the specimens under laser treatment, i.e. mechanical loading, acoustic emission (AE) monitoring, digital image correlation (DIC) strain field evaluation, infrared thermography (IRT) monitoring and X-ray computed tomography (CT) scanning. …”
    Get full text
    Article
  11. 1251

    Deep characteristic learning model for real-time flow monitoring based on H-ADCP by Yu Li, Xin Zhao, Yibo Wang, Ling Zeng

    Published 2025-02-01
    “…Study focus: Real-time flow monitoring based on horizontal-acoustic Doppler current profiler (H-ADCP), which remains insufficient to deal with low monitoring accuracy, complex flow characteristics, and large data volumes caused by the construction and operation of hydraulic engineering, backwater, tides, siltation changes, and high-frequency monitoring. …”
    Get full text
    Article
  12. 1252

    On the Evidence of Dynamical Dark Energy by Qing Gao, Zhiqian Peng, Shengqing Gao, Yungui Gong

    Published 2024-12-01
    “…To elucidate the robustness of the baryon acoustic oscillation (BAO) data measured by the dark energy spectroscopic instrument (DESI) in capturing the dynamical behavior of dark energy, we assess the model dependence of the evidence for dynamical dark energy inferred from the DESI BAO data. …”
    Get full text
    Article
  13. 1253

    Mechanical adhesion energy of thermal oxide scale on 0.01 and 0.12 wt.% Si-containing hot-rolled steels by Issaard Wannapha, Thublaor Thammaporn, Nilsonthi Thanasak

    Published 2025-01-01
    “….% Si, utilizing a tensile testing machine equipped with an observation setup and acoustic emission monitoring. Results indicate that the average scale thickness for the 0.01 wt.% Si and 0.12 wt.% Si steels were 10.83 ± 0.76 µm and 8.13 ± 1.08 µm, respectively, with the oxide scales consisting of hematite, magnetite, wustite, and iron. …”
    Get full text
    Article
  14. 1254

    Fast vocal-motor tracking of escaping prey in echolocating bats by Ilias Foskolos, Antoniya Hubancheva, Marie Rosenkjær Skalshøi, Kristian Beedholm, Peter Teglberg Madsen, Laura Stidsholt

    Published 2025-01-01
    “…Conclusions Echolocating bats can track evasive prey via a fast vocal-motor feedback loop allowing them to expand their acoustic depth of field. This echo-guided sensory adjustment contributes to the hunting superiority of bats as the most formidable insectivorous predator of the night skies.…”
    Get full text
    Article
  15. 1255

    Development of a photoacoustic acquisition system and their proof-of-concept for hemoglobin detection by Bruna Pinheiro, Vânia Pinto, Hugo Dinis, Michael Belsley, Susana Catarino, Graça Minas, Paulo Sousa

    Published 2025-01-01
    “…PA systems combine an illumination source to excite the sample molecules, with an ultrasound sensor to measure the generated ultrasonic waves, combining the advantages of optics and acoustic methodologies to safely acquire tridimensional signals and images at various depths.This work is focused on the design, implementation and test of an acquisition electronics circuit, based on the PA principle, for hemoglobin (Hb) detection, aiming towards a future integration within an OoC platform. …”
    Get full text
    Article
  16. 1256

    Impact of Cell Layout on Bandwidth of Multi-Frequency Piezoelectric Micromachined Ultrasonic Transducer Array by Wanli Yang, Huimin Li, Yuewu Gong, Zhuochen Wang, Xingli Xu, Xiaofan Hu, Pengfei Niu, Wei Pang

    Published 2024-12-01
    “…Underwater experiments were conducted to assess the acoustic performance, especially the bandwidth. We found that the densest arrangement of the same cells produced the largest bandwidth, achieving a 92% transmission bandwidth and a 50% burst-echo bandwidth at 6 MHz. …”
    Get full text
    Article
  17. 1257

    The Influence Mechanism and Optimization of the Sensor Network on the MS/AE Source Location by Nan Li, Maochen Ge, Enyuan Wang, Shaohua Zhang

    Published 2020-01-01
    “…The sensor network layout is a key factor affecting the accuracy and stability of the microseismic/acoustic source (MS/AE) location. Based on the arrival-time-difference principle, the hyperbolic/hyperboloidal governing equations for the source location are derived. …”
    Get full text
    Article
  18. 1258

    Automatic Measurement Techniques for Compositional Properties of Fresh Concrete: Focus on Water/Cement Ratio and Air Content by Ojala Teemu, Punkki Jouni

    Published 2024-12-01
    “…The research compared microwave absorption (MWA) and time-domain reflectometry (TDR) techniques for w/c ratio measurement as well as acoustic wave propagation (AWP) technique for air content measurement, against the reference testing methods. …”
    Get full text
    Article
  19. 1259

    Structural and electronic features enabling delocalized charge-carriers in CuSbSe 2 by Yuchen Fu, Hugh Lohan, Marcello Righetto, Yi-Teng Huang, Seán R. Kavanagh, Chang-Woo Cho, Szymon J. Zelewski, Young Won Woo, Harry Demetriou, Martyn A. McLachlan, Sandrine Heutz, Benjamin A. Piot, David O. Scanlon, Akshay Rao, Laura M. Herz, Aron Walsh, Robert L. Z. Hoye

    Published 2025-01-01
    “…Using a combination of theory and experiment, the critical enabling factors are found to be: 1) having a layered structure, which allows distortions to the unit cell during the propagation of an acoustic wave to be relaxed in the interlayer gaps, with minimal changes in bond length, thus limiting deformation potentials; 2) favourable quasi-bonding interactions across the interlayer gap giving rise to higher electronic dimensionality; 3) Born effective charges not being anomalously high, which, combined with the small bandgap ( $$\le$$ ≤ 1.2 eV), result in a low ionic contribution to the dielectric constant compared to the electronic contribution, thus reducing the strength of Fröhlich coupling. …”
    Get full text
    Article
  20. 1260

    Performance Analysis: AI-based VIST Audio Player by Microsoft Speech API by Ribwar Bakhtyar Ibrahim

    Published 2021-07-01
    “…Researchers have adopted many techniques to solve speech recognition challenges under the umbrella of Artificial Intelligence (AI), Pattern Recognition and Acoustic Phonetic approaches. Variation in pronunciation of words, individual accents, unwanted ambient noise, speech context, and quality of input devices are some of these challenges in speech recognition. …”
    Get full text
    Article