Showing 3,681 - 3,700 results of 4,366 for search '"optics"', query time: 0.06s Refine Results
  1. 3681

    Mapping the Active Galactic Nucleus Effects on the Stellar and Gas Properties of NGC 5806 by Sophie L. Robbins, Sandra I. Raimundo, Matthew A. Malkan

    Published 2025-01-01
    “…We map the dynamics of gas and stars, as well as gas optical emission line fluxes throughout the central 8 × 8 kpc ^2 of the galaxy. …”
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  2. 3682

    Technical note: Recommendations for diagnosing cloud feedbacks and rapid cloud adjustments using cloud radiative kernels by M. D. Zelinka, L.-W. Chao, T. A. Myers, T. A. Myers, Y. Qin, S. A. Klein

    Published 2025-02-01
    “…<p>The cloud radiative kernel method is a popular approach to quantify cloud feedbacks and rapid cloud adjustments to increased <span class="inline-formula">CO<sub>2</sub></span> concentrations and to partition contributions from changes in cloud amount, altitude, and optical depth. However, because this method relies on cloud property histograms derived from passive satellite sensors or produced by passive satellite simulators in models, changes in obscuration of lower-level clouds by upper-level clouds can cause apparent low-cloud feedbacks and adjustments, even in the absence of changes in lower-level cloud properties. …”
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  3. 3683

    Flavonoids of Rosa rugosa Thunb. inhibit tumor proliferation and metastasis in human hepatocellular carcinoma HepG2 cells by Zhiguo Zhang, Meilin Wang, Shu Xing, Chen Zhang

    Published 2022-03-01
    “…The effects of the two extracts on proliferation inhibition, apoptosis inducement and metastasis prevention of human HepG2 hepatocellular carcinoma cell lines were tested, via optical/fluorescence microscopy, MTT detection, Transwell assay, flow cytometry and Western blot, etc. …”
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  4. 3684

    A Review on Synthesis and Characterization of Ag2O Nanoparticles for Photocatalytic Applications by Workneh M. Shume, H. C. Ananda Murthy, Enyew Amare Zereffa

    Published 2020-01-01
    “…The structure, morphology, crystallinity, size, purity, elemental composition, and optical properties of obtained Ag2O NPs were characterized by different techniques, such as scanning electron microscopy (SEM), transmission electron microscope (HRTEM), X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), and UV-visible spectrophotometer accordingly as revealed by our literature review. …”
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  5. 3685

    Research progress in ultra-high temperature thermal resistance coatings by LIU Dongrui, TANG Xing, XIAO Jie, GUO Qian, HE Wenting, GUO Hongbo

    Published 2025-01-01
    “…A comparative analysis of the near-infrared optical properties of conventional TBCs is presented. …”
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  6. 3686

    Revised direct bandgap and band parameters for AlP: hybrid-functional first-principles calculations vs experiment by Cónal Murphy, Eoin P. O’Reilly, Christopher A. Broderick

    Published 2025-01-01
    “…Our results reconcile the spread in reported bandgaps and the conduction band valley ordering in AlP, while providing a consistent set of revised band parameters—including 8-band k · p parameters—to inform improved understanding of III-P electronic, optical, and transport properties.…”
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  7. 3687

    Halodule uninervis extract facilitates the green synthesis of gold nanoparticles with anticancer activity by Nadine Wehbe, Joelle Edward Mesmar, Riham El Kurdi, Ali Al-Sawalmih, Adnan Badran, Digambara Patra, Elias Baydoun

    Published 2025-02-01
    “…Abstract Gold nanoparticles (AuNPs) have been utilized in a plethora of applications due to their unique optical properties, high stability, and great biocompatibility. …”
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  8. 3688

    Effect of Active and Passive Smoking on Retinal Nerve Fibre Layer and Ganglion Cell Complex by Amany Abd El-Fattah El-Shazly, Yousra Ahmed Thabet Farweez, Lamia Salah Elewa, Yasser Abdelmageuid Elzankalony, Botheina Ahmed Thabet Farweez

    Published 2017-01-01
    “…To evaluate the possible structural and functional changes in the retinal nerve fibre layer (RNFL) and the ganglion cell complex (GCC) of chronic smokers and compare them with those of passive healthy smokers using spectral domain optical coherence tomography (SD-OCT) and pattern electroretinogram (PERG). …”
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  9. 3689

    Premier Dynamic Bandwidth Management and Tensile Wavelength Selection Ensuring QoS for NG-EPONs by Purushottam Singh, Pushpendra Kumar, Harshita Patel, Kanojia Sindhuben Babulal, Gayathri Ananthakrishnan

    Published 2025-01-01
    “…Next Generation Ethernet Passive Optical Networks (NG-EPONs) have emerged as a leading choice for global network connectivity due to their cost-effectiveness, enhanced security, and energy efficiency. …”
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    Article
  10. 3690

    Zone Specific Fractal Dimension of Retinal Images as Predictor of Stroke Incidence by Behzad Aliahmad, Dinesh Kant Kumar, Hao Hao, Premith Unnikrishnan, Mohd Zulfaezal Che Azemin, Ryo Kawasaki, Paul Mitchell

    Published 2014-01-01
    “…Higuchi’s fractal dimension was measured in circumferential direction (FDC) with respect to optic disk (OD), in three concentric regions between OD boundary and 1.5 OD diameter from its margin. …”
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  11. 3691

    Nanosecond pulsed current source for light emitting diode (LED) driven photoacoustic signal acquisition systems by Avishek Das, Manojit Pramanik

    Published 2025-01-01
    “…It can drive an array of 37 high-power LEDs (850 nm wavelength) with an electrical-to-optical efficiency of 24.8%. Illumination with this LED array produced a photoacoustic signal (after 79 dB amplification with low-noise amplifier) of 3.92 V (peak-to-peak) and a signal-to-noise ratio of 79.36 dB. …”
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  12. 3692

    Luminescence enhancement of Y2O3:Er3+ and Y2O3:Yb3+/Er3+ sub-microcrystals by Zr4+ ions Co-doping by Zixuan Jiang, Bing Liu, Zehua Zhang, Lili Wang, Zhixu Jia, Dan Zhao

    Published 2025-06-01
    “…This research contributes to the understanding of UC luminescent properties of lanthanide (Ln3+) ions doped UC materials and their technological applications in fields such as bioimaging, drug delivery, and optical temperature sensors.…”
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  13. 3693

    Use of Mechanical Turk as a MapReduce Framework for Macular OCT Segmentation by Aaron Y. Lee, Cecilia S. Lee, Pearse A. Keane, Adnan Tufail

    Published 2016-01-01
    “…To evaluate the feasibility of using Mechanical Turk as a massively parallel platform to perform manual segmentations of macular spectral domain optical coherence tomography (SD-OCT) images using a MapReduce framework. …”
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  14. 3694

    Fabrication of Ag:TiO2 Nanocomposite Thin Films by Sol-Gel Followed by Electron Beam Physical Vapour Deposition Technique by Manish Kumar, Krishna Kumar Parashar, Sushil Kumar Tandi, Tanuj Kumar, D. C. Agarwal, Abhishek Pathak

    Published 2013-01-01
    “…Surface morphological studies indicate that deposited films are uniform and intact to the substrate and have very low value of root mean square roughness. Optical studies exhibit a surface plasmon resonance induced absorption band in visible region, which is the characteristic feature of Ag nanoparticles. …”
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  15. 3695

    Er:YAG Laser and Fractured Incisor Restorations: An In Vitro Study by C. Fornaini, S. Petruzzella, R. Podda, E. Merigo, S. Nammour, P. Vescovi

    Published 2012-01-01
    “…The different groups were evaluated by a test realized with the dynamometer to know the force required to successfully detach the reattached fragment and by a microinfiltration test by using a 0.5% methylene blue solution followed by the optic microscope observation. Results. The compression test showed only a slight difference between the three groups, without any statistical significance. …”
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  16. 3696

    Retinal Ganglion Cell Atrophy in Homonymous Hemianopia due to Acquired Occipital Lesions Observed Using Cirrus High-Definition-OCT by Tsutomu Yamashita, Atsushi Miki, Katsutoshi Goto, Syunsuke Araki, Go Takizawa, Yoshiaki Ieki, Junichi Kiryu, Akio Tabuchi, Yasuyuki Iguchi, Kazumi Kimura, Yoshiki Yagita

    Published 2016-01-01
    “…To report a reduction in macular ganglion cell layer and inner plexiform layer (GCL+IPL) thickness and circumpapillary retinal nerve fiber layer (cpRNFL) thickness using spectral-domain optical coherence tomography in patients with homonymous hemianopia due to posterior cerebral artery (PCA) stroke. …”
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    Article
  17. 3697

    Approximal Caries Detection by DIFOTI: In Vitro Comparison of Diagnostic Accuracy/Efficacy with Film and Digital Radiography by Á. Ástvaldsdóttir, K. Åhlund, W. P. Holbrook, B. de Verdier, S. Tranæus

    Published 2012-01-01
    “…The aim of the present study was to compare the diagnostic accuracy/efficacy of digital imaging fiber-optic transillumination (DIFOTI) with film and digital radiography, in detection of approximal caries lesions. …”
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  18. 3698

    Carbon Nanosphere-Based TiO<sub>2</sub> Double Inverse Opals by Dániel Attila Karajz, Kincső Virág Rottenbacher, Klára Hernádi, Imre Miklós Szilágyi

    Published 2025-01-01
    “…Inverse opals (IOs) are intensively researched in the field of photocatalysis, since their optical properties can be fine-tuned by the initial nanosphere size and material. …”
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  19. 3699

    Preparation of Aligned ZnO Nanorod Arrays on Sn-Doped ZnO Thin Films by Sonicated Sol-Gel Immersion Fabricated for Dye-Sensitized Solar Cell by I. Saurdi, M. H. Mamat, M. F. Malek, M. Rusop

    Published 2014-01-01
    “…Aligned ZnO Nanorod arrays are deposited on the Sn-doped ZnO thin film via sonicated sol-gel immersion method. The structural, optical, and electrical properties of the Sn-doped ZnO thin films were investigated. …”
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    Article
  20. 3700

    Mechanical and Frictional Behavior of Jute-Textile-Reinforced Polymer Composites With Matrix Modification by Farhin Tabassum, M. R. Asekin, M. Salim Kaiser, S. Reaz Ahmed

    Published 2025-01-01
    “…The pin-on-disc wear study shows that under constant and varying load conditions, the coefficient of friction of the composite is found to be relatively higher for the case of aluminum-powder modifier compared with those of silicon and carbon power modifiers. The results of optical microstructures, scanning electron microscopic (SEM) images, and energy dispersive x-ray (EDX) spectra are found to be in support of the results observed through direct measurements. …”
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