Showing 5,661 - 5,680 results of 5,957 for search '"optics"', query time: 0.08s Refine Results
  1. 5661

    Quantum size effects and tailoring the electron energy levels in semiconductors: comparison study on Al x Ga 1-x As and Ga x In 1-x As quantum wires by M. K. Abu-Assy, Fatin Fadhel Mahmood, Z. A. El-Wahab

    Published 2025-02-01
    “…Here, we proposed, for the first time, a novel rectangular architecture based AlxGa1-xAs and GaxIn1-xAs quantum wires to engineer the electron energy spectrum according to a wide range of applications in electronics and optical devices. The electron energy levels in rectangular AlxGa1-xAs and GaxIn1-xAs quantum wires with infinite potential barrier were calculated at different x values and different cross-section areas to explore the role of dopant and compared with the cylindrical shape. …”
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  2. 5662

    Application possibility of ophthalmic heparin ointment as an artificial tear (preliminary report) by V.D. Yartsev

    Published 2018-09-01
    “…All patients underwent a lacrimal meniscometry based on optical coherence tomography with determination of the depth and height of the tear meniscus. …”
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  3. 5663

    Wavefront-guided pupilloplasty in patients following penetrating keratoplasty: Optimizing results by Vijay K Sharma, GN Divyashree, Preeti, Vikas Ambiya, Ashok Kumar, Srishti Khullar, Vipin Rana

    Published 2025-01-01
    “…Mean point spread function Stehl ratio value improved from 0.056 ± 0.032 to 0.223 ± 0.102. Mean RMS (optical path difference) value changed from 6.248 ± 4.721 to 0.943 ± 0.947 µm (P < 0.001), Mean RMS (high orders) value changed from 3.788 ± 3.537 to 0.328 ± 0.256 µm (P value 0.003), and the mean spherical aberration value changed from 0.646 ± 0.873 to 0.223 ± 0.102 µm (P value 0.024). …”
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  4. 5664

    PENGEMBANGAN BAHAN AJAR ELEKTRONIK MENGGUNAKAN FLIP PDF PROFESSIONAL PADA MATERI ALAT-ALAT OPTIK DI SMA by Indah Sriwahyuni, Eko Risdianto, Henny Johan

    Published 2019-12-01
    “…Kata Kunci : Pengembangan dan penelitian, Bahan Ajar Elektronik, Flip PDF Professional  ABSTRACT This research was aimed to describe validity tests of electronic teaching materials using Flip PDF Pro on Optical Instruments topic. This research used research and development model, namely 3D Development .The steps of 3D development were Define, Design, and Develop. …”
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  5. 5665

    Experimental Study on Chemiluminescence Properties of Ammonia-Methane Non-Premixed Laminar Flames by Haihang Su, Yuxuan Wu, Jinzhi Yan, Liqiao Jiang

    Published 2025-01-01
    “…The fundamental investigation on the chemiluminescence characteristics of NH<sub>3</sub>-based flames is essential for the development of low-cost, real-time optical diagnostic sensor technologies. In this study, we have experimentally examined the chemiluminescence properties of non-premixed ammonia-methane laminar jet flames under various initial NH<sub>3</sub> blending ratios (<i>X<sub>NH</sub></i><sub>3</sub> from 0.2 to 1.0 in volume) by conducting the emission spectrum analysis within the 200–800 nm band and capturing the distribution images of key excited radicals. …”
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  6. 5666

    The Analysis of Correlative Factors of Visual Acuity with Intravitreal Conbercept Injection in Macular Edema Associated with Branch Retinal Vein Occlusion by Wenjuan Luo, Fengjiao Jia, Min Liu, Yunxiao Wang, Ting Zhang

    Published 2018-01-01
    “…Data collected at various time points include BCVA, CFT, photoreceptor layer thickness (PLT), and outer nuclear layer thickness (ONLT) on optical coherence tomography. The correlation between CFT, PLT, ONLT, and BCVA before and after injections was analyzed. …”
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  7. 5667
  8. 5668
  9. 5669
  10. 5670

    Control of giant orbital angular momentum bursts of structured Laguerre-Gaussian beams in a medium with general astigmatism by A.V. Volyar, E.G. Abramochkin, M.V. Bretsko, S.I. Khalilov, Ya.E. Akimova

    Published 2024-02-01
    “…Since degenerate ring dislocations are formed by optical vortices with opposite topological charges, but with equal weights, their destruction is accompanied by appearing of vortex pairs in the form of topological dipoles (their number is equal to the radial number n). …”
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  11. 5671

    Improved Antibacterial Activity of Water-Soluble Nanoformulated Kaempferol and Combretastatin Polyphenolic Compounds by Y. Santhosh Kumar, Langeswaran Kulanthaivel, G. S. Hikku, R. Saravanan, Thangavelu Lakshmi, C. Kirubhanand, Murugesan Karthikeyan, P. Vijayalakshmi, Gowtham Kumar Subbaraj

    Published 2021-01-01
    “…The antibacterial activity was assessed by measuring the optical density at 600 nm using UV-vis spectrophotometer and displayed significant activity against gram-positive Staphylococcus aureus strain. …”
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  12. 5672

    Clinical Characteristics of Paracentral Acute Middle Maculopathy in Eyes with Retinal Vascular Occlusion Diseases in Chinese Patients by Zhengwei Zhang, Yunjia Jiang, Xiaoli Huang, Zhifeng Wu, Bilian Ke

    Published 2021-01-01
    “…All patients were scanned using the spectrum-domain optical coherence tomography (OCT), and some of them underwent color fundus photography, fundus fluorescence angiography, en face OCT, and OCT angiography. …”
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  13. 5673

    Ellipsoid Zone Integrity and Visual Acuity Changes during Diabetic Macular Edema Therapy: A Longitudinal Study by Lucy J. Kessler, Gerd U. Auffarth, Dmitrii Bagautdinov, Ramin Khoramnia

    Published 2021-01-01
    “…This study is aimed at describing the long-term VA and anatomical outcomes in spectral domain optical coherence tomography (OCT) (relative ellipsoid zone reflectivity ratio, central macular thickness, and volume) in patients with DME treated with antivascular endothelial growth factor (anti-VEGF) therapy. …”
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  14. 5674

    Involvement of Inner Choroidal Layer in Choroidal Thinning during Regression of Multiple Evanescent White Dot Syndrome by Yuki Hashimoto, Wataru Saito, Yuka Hasegawa, Kousuke Noda, Susumu Ishida

    Published 2019-01-01
    “…Using enhanced depth imaging optical coherence tomography, whole, inner, and outer choroidal layer thicknesses at the fovea and perifovea were manually measured at the initial visit and at 1 and 3 months after the initial visit. …”
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  15. 5675

    Influences of multi-pass friction stir alloying on characterization of AZ91D alloy-based dual reinforcement bio-ceramic nano-composites by Surendra Kumar Patel, Guoxin Dai, Lu Liu, Zhen Sun, Lei Shi

    Published 2025-01-01
    “…The surface properties were characterized via optical, SEM, EDS, XRD and EBSD techniques. The microstructure showed that the reinforcements were equally distributed into the surface matrix after 3-passes for sets of composites. …”
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  16. 5676

    Effect of Anterior Chamber Instability during Phacoemulsification Combined with Intraocular Lens Implantation by Wenjing Geng, Wenli Lin, Pei Song, Min Zhang, Jian Wu, Shu Su, Yurong Yuan, Min Ji, Huaijin Guan

    Published 2022-01-01
    “…AC stability was evaluated using operating microscopy and intraoperative optical coherence tomography (iOCT). Slit-lamp examination of AC flare and cells was performed 1 day postoperatively. …”
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  17. 5677

    Construction of All Solid State Bi2MoO6/Bi2WO6@Ti3C2 MXene Heterostructure System and the Mechanism Study of the Z-scheme Photocatalysis by Dongfang Zhang, Junkun Liu, Qiang Liu, Jiaxun Wang, Yang Qu

    Published 2025-01-01
    “…The structure and properties of the as-prepared catalytic materials were analyzed by X‑ray powder diffraction (XRD), transmission electron microscope (TEM) and high-resolution TEM (HRTEM), ultraviolet‑visible diffuse reflection spectroscopy (UV‑Vis DRS), fluorescence spectroscopy (PL), X-ray photoelectron spectroscopy (XPS), N2 adsorption–desorption measurements and photoelectrochemical tests, which were performed to analyze the phase composition, microstructure, morphology, optical properties, and recombination rate of photogenerated charge of the as-prepared samples. …”
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  18. 5678
  19. 5679

    Tissue-friendly dentin treatments as a potential element in revascularization protocol (ex-vivo study) by Hala Fayek Khalil, Nadia Ezz El Din Metwalli, Sara Magdy, Mohamed Shamel

    Published 2025-02-01
    “…Cytotoxicity was assessed using the MTT assay, with optical density measured at the specified times. Cell proliferation was evaluated via the Trypan blue exclusion test, with viable cells counted using a hemocytometer. …”
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  20. 5680

    Reversal of Myopic Correction for Patients Intolerant to LASIK by Amr A. Gab-Alla

    Published 2021-01-01
    “…The mean of CDVA was 0.2 ± 0.03 log MAR (range −0.10 to 0.4 log MAR). The mean optical zone of reversal treatment was 6.1 ± 0.3 mm (range 5.9 to 6.2 mm). …”
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