Showing 521 - 540 results of 4,366 for search '"optics"', query time: 0.06s Refine Results
  1. 521

    Optical-Fiber-Based Smart Concrete Thermal Integrity Profiling: An Example of Concrete Shaft by Ruoyu Zhong, Ruichang Guo, Wen Deng

    Published 2018-01-01
    “…In this paper, we use concrete shaft as an example to conduct TIP by using the optical fiber as a temperature sensor which can obtain high spatial resolution temperature data. …”
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    Article
  2. 522

    Computational Study of the Effect of the Size-Dependent Dielectric Functions of Gold Nanomaterials on Optical Properties by Bawoke Mekuye, Rainer Höfer, Gedefaw Mebratie

    Published 2024-01-01
    “…The effect of size on the optical properties of gold nanomaterials has been studied using the theoretical Drude–Sommerfield model. …”
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  3. 523
  4. 524

    Effect of Etching on the Optical, Morphological Properties of Ag Thin Films for SERS Active Substrates by Desapogu Rajesh, M. Mahendar, C. S. Sunandana

    Published 2013-01-01
    “…Structural, optical, and morphological properties of Ag thin films before and after etching were investigated by using X-ray diffraction, UV-Vis spectrophotometer, and field emission scanning electron microscopy (FESEM). …”
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  5. 525

    In-Band Asymmetry Compensation for Accurate Time/Phase Transport over Optical Transport Network by Sammy Siu, Wen-Hung Tseng, Hsiu-fang Hu, Shinn-Yan Lin, Chia-Shu Liao, Yi-Liang Lai

    Published 2014-01-01
    “…This paper studies the issues that are relevant to distributing accurate time/phase over optical transport network (OTN). Each node and link can introduce asymmetry, which affects the adequate time/phase accuracy over the networks. …”
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    Article
  6. 526

    Nonarteritic Anterior Ischemic Optic Neuropathy following COVID-19 Vaccination: Consequence or Coincidence by Rika Tsukii, Yuka Kasuya, Shinji Makino

    Published 2021-01-01
    “…Fundoscopy revealed diffuse optic disc swelling in the right eye, which was prominent above the optic disc. …”
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  7. 527

    Age group classification based on optical measurement of brain pulsation using machine learning by Martti Ilvesmäki, Hany Ferdinando, Kai Noponen, Tapio Seppänen, Vesa Korhonen, Vesa Kiviniemi, Teemu Myllylä

    Published 2025-01-01
    “…Abstract Optical techniques, such as functional near-infrared spectroscopy (fNIRS), contain high potential for the development of non-invasive wearable systems for evaluating cerebral vascular condition in aging, due to their portability and ability to monitor real-time changes in cerebral hemodynamics. …”
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  8. 528
  9. 529

    Alterations in Parafoveal and Optic Disc Vessel Densities in Patients with Obstructive Sleep Apnea Syndrome by Turgay Ucak, Ethem Unver

    Published 2020-01-01
    “…To analyze the effects of obstructive sleep apnea syndrome (OSAS) on ocular parameters and determine the alterations in macular vasculature by optical coherence tomography-angiography (OCT-A) in patients with different stages of OSAS. …”
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  10. 530
  11. 531

    Spectral Dependence of Optical Absorption of 4H-SiC Doped with Boron and Aluminum by I. G. Atabaev, Kh. N. Juraev, M. U. Hajiev

    Published 2018-01-01
    “…Optical absorption of p-n-4H-SiC structures doped with boron and aluminum by low-temperature diffusion was studied for the first time. …”
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  12. 532

    Deep empirical neural network for optical phase retrieval over a scattering medium by Huaisheng Tu, Haotian Liu, Tuqiang Pan, Wuping Xie, Zihao Ma, Fan Zhang, Pengbai Xu, Leiming Wu, Ou Xu, Yi Xu, Yuwen Qin

    Published 2025-02-01
    “…The DENN does not rely on labeled data, all while delivering as high as 58% improvement in fidelity compared with the supervised learning using 30000 data pairs for achieving the same goal of optical phase retrieval. The DENN might shed new light on the applications of deep learning in physics, information science, biology, chemistry and beyond.…”
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  13. 533
  14. 534

    Differences in Optical Two-dimensional Morphological Characteristics of Downward Lightning Channels with Different Polarities by Mei Ji, Lü Weitao, Qi Qi, Xu Weiqun, Wu Bin, Ma Ying, Liu Hengyi, Chen Lüwen, Zhang Yang

    Published 2025-01-01
    “…There remains a lack of clarity concerning the morphological characteristics associated with the development of positive CG lightning channels, as well as the morphological differences between positive and negative CG lightning channels.Based on a collection of digital images of 50 CG lightning events (25 positive and 25 negative), the optical two-dimensional morphological characteristics of lightning channels with different polarities are investigated and compared. …”
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  15. 535
  16. 536

    High-Speed GPU-Based Fully Three-Dimensional Diffuse Optical Tomographic System by Manob Jyoti Saikia, Rajan Kanhirodan, Ram Mohan Vasu

    Published 2014-01-01
    “…We have developed a graphics processor unit (GPU-) based high-speed fully 3D system for diffuse optical tomography (DOT). The reduction in execution time of 3D DOT algorithm, a severely ill-posed problem, is made possible through the use of (1) an algorithmic improvement that uses Broyden approach for updating the Jacobian matrix and thereby updating the parameter matrix and (2) the multinode multithreaded GPU and CUDA (Compute Unified Device Architecture) software architecture. …”
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  17. 537

    Novel Optical Coherence Tomography Parameters as Prognostic Factors for Stage 3 Epiretinal Membranes by Young Gun Park, Seo Yeon Hong, Young-Jung Roh

    Published 2020-01-01
    “…Central foveal thickness (CFT), EIFL thickness, and the length of the ellipsoid zone defect were evaluated at baseline and at 1 month, 6 months, and 12 months after surgery based on pre- and postoperative swept-source optical coherence tomography (OCT) images. The association of EIFL thickness and other OCT parameters with pre- and postoperative best-corrected visual acuity (BCVA) was analyzed. …”
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  18. 538

    Deep imaging of LepR+ stromal cells in optically cleared murine bone hemisections by Yuehan Ni, Jiamiao Wu, Fengqi Liu, Yating Yi, Xiangjiao Meng, Xiang Gao, Luyi Xiao, Weiwei Zhou, Zexi Chen, Peng Chu, Dan Xing, Ye Yuan, Donghui Ding, Ge Shen, Min Yang, Ronjie Wu, Ling Wang, Luiza Martins Nascentes Melo, Sien Lin, Xiaoguang Cheng, Gang Li, Alpaslan Tasdogan, Jessalyn M. Ubellacker, Hu Zhao, Shentong Fang, Bo Shen

    Published 2025-01-01
    “…In this study, we introduce an optimized protocol for the 3D analysis of skeletal tissues, enabling the visualization of hematopoietic and stromal cells, especially LepR+ stromal cells, within optically cleared bone hemisections. Our method preserves the 3D tissue architecture and is extendable to other hematopoietic sites such as calvaria and vertebrae. …”
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  19. 539
  20. 540

    BER Performance of Stratified ACO-OFDM for Optical Wireless Communications over Multipath Channel by Zelalem Hailu Gebeyehu, Philip Kibet Langat, Ciira Wa Maina

    Published 2018-01-01
    “…Among previously proposed unipolar optical OFDM schemes for optical wireless communications (OWC), asymmetrically clipped optical OFDM (ACO-OFDM) and direct current biased optical OFDM (DCO-OFDM) are the most accepted ones. …”
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