Showing 341 - 360 results of 7,984 for search '"LEDs"', query time: 0.07s Refine Results
  1. 341

    Relationship between Ce3+ 5d1 level, conduction-band bottom, and shallow electron trap level in Gd3Ga5O12:Ce and Gd3Al1Ga4O12:Ce crystals studied via pump-probe absorption spectros... by Mamoru Kitaura, Heishun Zen, Shinta Watanabe, Hirokazu Masai, Kei Kamada, Kyoung-Jin Kim, Akira Yoshikawa, Jumpei Ueda

    Published 2025-02-01
    “…Ce3+-doped compounds are typically the preferred materials for the development of inorganic phosphors for white LEDs, displays, and scintillators. In this study, pump-probe absorption spectroscopy was performed for Gd3Ga5O12:Ce and Gd3Al1Ga4O12:Ce crystals using ultraviolet (UV) and visible (VIS) pump light, and infrared (IR) probe light. …”
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  2. 342

    Synthesis and optical properties of LaSrGaO4:RE3+ (RE = Sm, Eu, Ho) single crystals via optical float zone method by Hasan Yilmaz, Masahiko Isobe, Oliver Clemens, Markus Suta, Pascal Puphal

    Published 2025-02-01
    “…The advancement of synthesis of materials with luminescence properties of lanthanoid ions in various single crystalline host compounds with low phonon energies has facilitated the optimization of numerous materials to meet the specific optical properties required for diverse applications such as new energy resource exploration, light-emitting diodes (LEDs), quantum dot displays, laser technology, sensors, telecommunications, medical diagnostics and more. …”
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  3. 343

    Implementation of a Smart Home Intruder Detection System using a Vibrometer and ESP 32 CAM by Samuel Owoeye, Folasade Durodola, Adekunle Oyelami, Racheal Oladejo, Samuel Obasuyi, Ademola Qasim, Joshua Ogundairo

    Published 2025-01-01
    “…In the realm of lighting control, the ATMega328P regulates diverse light sources such as LEDs and smart bulbs. The ESP32-CAM facilitates a user-friendly experience, enabling seamless control and automation of the lighting system through a dedicated mobile application or voice commands. …”
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  4. 344

    The effectiveness of Transcranial Photobiomodulation therapy (tPBM) on reducing anxiety, depression, and opioid craving in patients undergoing methadone maintenance treatment: a do... by Helya Helali, Nastaran Samani, Faraj Tabeie, Shiva Eiliaei, Ali Kheradmand

    Published 2025-02-01
    “…The intervention group received PBM in the form of Light- Emitting Diodes (LEDs) for four minutes of light exposure at 810 nm wavelength producing 250 mW/cm2 when applied to 4 mm skin depth (totaling 60 J/cm2) in both forehead locations. …”
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  5. 345

    Liquid-infused nanostructured composite as a high-performance thermal interface material for effective cooling by Rui Cheng, Qixian Wang, Zexiao Wang, Lin Jing, Ana V. Garcia-Caraveo, Zhuo Li, Yibai Zhong, Xiu Liu, Xiao Luo, Tianyi Huang, Hyeong Seok Yun, Hakan Salihoglu, Loren Russell, Navid Kazem, Tianyi Chen, Sheng Shen

    Published 2025-01-01
    “…We envision liquid-infused nanostructured composites as a universal thermal interface solution for cooling applications in data centers, GPU/CPU systems, solid-state lasers, and LEDs.…”
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  6. 346

    Effects of Light Intensity and Irrigation Method on Growth, Quality, and Anthocyanin Content of Red Oak Lettuce (<i>Lactuca sativa</i> var. <i>cripspa</i> L.) Cultivated in a Plant... by Thanit Ruangsangaram, Pariyanuj Chulaka, Kriengkrai Mosaleeyanon, Panita Chutimanukul, Michiko Takagaki, Na Lu

    Published 2025-01-01
    “…Two light intensities (300 and 400 µmol m<sup>−2</sup> s<sup>−1</sup>) with white LEDs and two irrigation methods (circulating vs. non-circulating irrigation) were applied seven days before harvesting. …”
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  7. 347

    All-polymer piezo-ionic-electric electronics by Tianpei Xu, Long Jin, Yong Ao, Jieling Zhang, Yue Sun, Shenglong Wang, Yuanxiao Qu, Longchao Huang, Tao Yang, Weili Deng, Weiqing Yang

    Published 2024-12-01
    “…It is applicable to be a transducer to light LEDs, and a sensor to detect weak physiological signals or mechanical vibration. …”
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  8. 348

    Rancang Bangun Alat Pengenal Finger Vein Menggunakan Raspberry Pi dengan Metode Convolutional Neural Network (CNN) by Barlian Henryranu Prasetio, Jevandika, Dahnial Syauqy

    Published 2024-10-01
    “…Penelitian ini menggunakan sistem berbasis Raspberry Pi 4 dengan bantuan IR LED dan webcam untuk proses akusisi data citra pembuluh darah jari, yang diharapkan mampu melakukan proses pengenalan Finger Vein lebih cepat, dan penggunaan metode Convolutional Neural Network yang sudah teruji untuk menghasilkan akurasi yang lebih baik dengan proses Deep Learning. …”
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  9. 349

    Comprehensive Analysis of a Bridged-T Pre-Equalizer Circuit for High-Speed Visible Light Communications by Siti Hajar Ab Aziz, Norhanis Aida Mohd Nor, Suriza Ahmad Zabidi

    Published 2025-01-01
    “…The circuit is proposed to overcome the bandwidth limitation of light-emitting diodes (LEDs) in the VLC system. The advanced design system (ADS) and MATLAB were integrated to analyze the behavior of the BTEC in terms of transfer functions and scattering parameters S11, S12, S21, and S22. …”
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  10. 350

    Development and Validation of a Photoplethysmography System for Noninvasive Monitoring of Hemoglobin Concentration by Hongyun Liu, Fulai Peng, Minlu Hu, Jinlong Shi, Guojing Wang, Haiming Ai, Weidong Wang

    Published 2020-01-01
    “…Traditional invasive hemoglobin (Hb) detection led to delayed diagnosis, operational inefficiency, incorrect critical decision making, and uncomfortable patient experience. …”
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  11. 351

    Effect of photobiomodulation as preventive treatment of diabetic foot ulcer: randomised, controlled, double-blind, clinical trial protocol by Lara Jansiski Motta, Anna Carolina Ratto Tempestini Horliana, Kristianne Porta Santos Fernandes, Raquel Agnelli Mesquita-Ferrari, Sandra Kalil Bussadori, Roselene Lourenço, Silvana Torres Perez, Cinthya Cosme Gutierrez Duran, Alexandre Rocha Santos Padilha, Tainá Caroline dos Santos Malavazzi

    Published 2025-01-01
    “…The PBM group will wear a boot with 1344 light-emitting diodes (LEDs)—504 with a wavelength of 660 nm located on the sides of the boot (28.5 mW, 10 J per LED), 504 with a wavelength of 850 nm also on the sides of the boot (23 mW, 8 J per LED), 168 with a wavelength of 660 nm on the base of the boot (28.5 mW, 10 J per LED) and 168 with a wavelength of 850 nm also on the base of the boot (23 mW, 8 J per LED). …”
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  12. 352

    Anti-thermal-quenching and colour-tuneable Tb3+/Ce3+-doped phosphor from natural wollastonite by Yu Xinhong, Chen Feng, Yang Ming, Ruan Min, Feng Wei

    Published 2024-12-01
    “…Based on the observations, the above materials display good thermal stability and can be developed as phosphors for application in display devices and LEDs above room temperature.…”
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  13. 353

    Adhesion-induced MoS2 layer transfer via in-situ TEM-nanoindentation: Effects of curvature and substrate mediated residual stress by Jhih H. Liang, Mehdi Rouhani, J. David Schall, Takaaki Sato, Christopher Muratore, Nicholas R. Glavin, Robert W. Carpick, Yeau-Ren Jeng

    Published 2025-01-01
    “…Molybdenum disulfide (MoS2) holds great potential in a wide range of applications, including electronics, photodetectors, light-emitting diodes (LEDs), and solar cells due to its unique two-dimensional (2D) structure. …”
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  14. 354

    The Upregulation of IL-1&beta; Induced by Cisplatin Triggers PI3K/AKT/MMP9 Pathway in Pericytes Mediating the Leakage of the Blood Labyrinth Barrier by Yu M, Jiang WJ, Yu M, Zhou Z, Wang M, Li L

    Published 2025-01-01
    “…This release triggers the activation of PI3K/AKT pathway and upregulation of MMP9 expression in pericytes, which increases BLB permeability and leds to hearing loss. IL-1β and the PI3K-AKT pathway are promising therapeutic targets,offering hope for patients with CDDP-induced hearing loss. …”
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    Article
  15. 355

    Realizing low voltage-driven bright and stable quantum dot light-emitting diodes through energy landscape flattening by Yiting Liu, Yingying Sun, Xiaohan Yan, Bo Li, Lei Wang, Jianshun Li, Jiahui Sun, Yaqi Guo, Weipeng Liu, Binbin Hu, Qingli Lin, Fengjia Fan, Huaibin Shen

    Published 2025-01-01
    “…The record-high luminance levels of 1,400 and 8,600 cd m-2 are achieved at bandgap voltages of 100% and 120%, respectively. Meanwhile, These LEDs show an unprecedented operation lifetime T95 (time for the luminance to decrease to 95%) of 72,968 h at 1,000 cd m-2. …”
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  16. 356

    Performance analysis of a VLC system with a new light source and joint step-by-step mapping spatial modulation by Jian SONG, Ya-li CAO, Wen-sheng ZHANG, Jian SUN, Cheng-xiang WANG

    Published 2017-09-01
    “…A new type of light source in the visible light communication (VLC) system was adopted to realize the illumination and data transmission functions simultaneously.Also,a joint step-by-step mapping spatial modulation method based on spatial modulation and red,green,and blue (RGB) LED was proposed.The new light source consisted of white LED and one or more sets of RGB LED,where white LED provided only illumination and RGB LED was only used for communications.The color of RGB LED was controlled by power allocation and the color quality of the new light source was evaluated by color rendering index (CRI).Moreover,the bit error rate (BER) performance of the joint step-by-step mapping spatial modulation scheme with direct current optical orthogonal frequency division multiplexing (DCO-OFDM) at the receivers was also analysed.Simulation results show that the power of RGB LED can be adaptively adjusted according to different requirements of communication and illumination to meet the needs of different scenarios.The VLC system can achieve good BER performance with appropriate light group layout and direct current paranoia.…”
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  17. 357
  18. 358

    Reversing the biblical tide: what Kuruman teaches London about mission in a post-colonial era by S. de Gruchy

    Published 2009-12-01
    “…A particular reading of the Bible led the missionaries of the LMS to Africa, and their concern to promote the Bible led to the translation and printing of the Bible in indigenous languages — most famously into Setswana by Robert Moffat at Kuruman. …”
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  19. 359

    Catching up with the Past: A Small Contribution to a Long History of Interactive Environments by Michael Fox

    Published 2010-01-01
    “…The combination of these two areas led to the use of discrete mechanical assemblies as a systems approach to interaction design, which led to the thinking of control as bottom-up and emergent. …”
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  20. 360