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Showing 141 - 160 results of 3,725 for search 'optical different method', query time: 0.20s Refine Results
  1. 141

    Changes in Macular Pigment Optical Density and Serum Lutein Concentration in Japanese Subjects Taking Two Different Lutein Supplements. by Akira Obana, Masaki Tanito, Yuko Gohto, Shigetoshi Okazaki, Werner Gellermann, Paul S Bernstein

    Published 2015-01-01
    “…<h4>Purpose</h4>To investigate macular pigment optical density (MPOD) and serum concentration changes of lutein in Japanese subjects participating in a clinical trial in which two formulations of lutein and zeaxanthin supplements with different physiochemical properties are used.…”
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  2. 142

    Exploration of choroidal vascular changes in juveniles with different degrees of myopia: The application of swept-source optical coherence tomography angiography by Linbo He, Qing Wang, Ziyang Li, Libing Song, Bo Liu, Yuli Yang

    Published 2025-08-01
    “…Objective: To investigate the vascular characteristic changes in the macular retina and choriocapillaris, as well as the choroidal vascularization of eyes with different degrees of myopia in juveniles using Swept-source Optical Coherence Tomography (SS-OCT), aiming to understand the pathophysiological characteristics of myopic eyes further. …”
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  3. 143

    Static Calibration of a New Three-Axis Fiber Bragg Grating-Based Optical Accelerometer by Abraham Perez-Alonzo, Luis Alvarez-Icaza, Gabriel E. Sandoval-Romero

    Published 2025-01-01
    “…We developed an analytical, non-iterative, 12-parameter matrix calibration approach based on the least-squares method, which allows compensation for different gains in its axes, offset, and cross-axis. …”
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  4. 144

    Recognition English Letters Using Invariant Moment in Extracting Properties of Images by Hadia Abdullah

    Published 2005-06-01
    “…In this research, a study of printed English characters properties for Optical Character Recognition is done using the invariant moment method to evaluate the character properties due to it’s resistance against the rotation, scaling and shifting work. …”
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  5. 145

    The effect of phacoemulsification of bilateral cataracts, performed at different intervals, on the macular area of the retina by I. E. Ioshin, A. I. Tolchinskaya, A. M. Bagirov

    Published 2020-03-01
    “…A comprehensive assessment of the state of macular retina after phacoemulsification of two eyes performed at different intervals between operations according to optical coherence tomography (OCT) data. …”
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  6. 146

    Synthesis and investigation of structural and optical properties of CdO: Ag nanoparticles of various concentrations by Suaad A. Muhammed, Nada K. Abbas

    Published 2023-10-01
    “… This study discussed the effects of doping with silver (Ag) on the optical and structural properties of CdO nanoparticles at different concentrations 0, 1, 2, 3, 4, 5 wt% prepared by the precipitation method. …”
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  7. 147

    A Review on Image Enhancement and Restoration Techniques for Underwater Optical Imaging Applications by N. Deluxni, Pradeep Sudhakaran, Kitmo, Mouhamadou Falilou Ndiaye

    Published 2023-01-01
    “…Various UIE techniques are studied for different data sets, and applications. However, the selection of suitable method for particular applications among available techniques is still a challenging task. …”
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  8. 148

    METHOD FOR DETERMINATION OF FOCAL PLANE LOCATION OF FOCUSING COMPONENTS by A. I. Ivashko, V. E. Kisel, N. V. Kuleshov

    Published 2017-02-01
    “…Mass-production of different laser systems often requires utilization of the focal spot size method for determination of output laser beam spatial characteristics. …”
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  9. 149

    THE METHOD FOR PREDICTIVE ASSESSMENT OF THE CONDITION OF PATIENTS WITH ATOPIC DERMATITIS AT DIFFERENT STAGES OF THE DISEASE by Oleg Avrunin, Alexey Trubitcin, Viktoriia Klymenko

    Published 2021-06-01
    “…The subject of the research is the development of a method for prognostic assessment of the condition of patients with atopic dermatitis at different stages of the disease. …”
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  10. 150
  11. 151

    A Novel Approach to Method for the Detection of Optic Disc Location in Retinal Images using Image Processing Techniques by Kemal Adem, Mahmut Hekım, Onur Comert, Selim Demır

    Published 2016-11-01
    “…In this study, three different solutions are proposed for detecting the optic disc location, using the brightness and circularity properties of the related region. …”
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  12. 152

    Theoretical Analysis of a Novel WDM Optical Long-Haul Network Using the Split-Step Fourier Method by Mounia Chakkour, Otman Aghzout, Fahd Chaoui

    Published 2020-01-01
    “…In this paper, a new optical transmission model was investigated and developed in order to improve the performance of Wavelength Division Multiplexing optical transmission systems. …”
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  13. 153

    Improvement of Mechanical, Thermal and Optical Properties of Barium Mixed Cobalt Tartrate Hydrate Crystals Grown by Gel Method by S. Vanaja, V. Selvamurugan, P.V. Chandrasekar, R. Krishna Sharma, M. Alagar

    Published 2015-10-01
    “…In this present work, CTH and BCTH crystals have been prepared by gel technique by using single diffusion method at room temperature. The as grown crystals were characterized by using XRD, FT-IR, UV, TG / DTA and Micro hardness studies. …”
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  14. 154

    A Keyframe Extraction Method for Assembly Line Operation Videos Based on Optical Flow Estimation and ORB Features by Xiaoyu Gao, Hua Xiang, Tongxi Wang, Wei Zhan, Mengxue Xie, Lingxuan Zhang, Muyu Lin

    Published 2025-04-01
    “…To address this, we propose a keyframe extraction method tailored for assembly line videos, combining optical flow estimation with ORB-based visual features. …”
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  15. 155
  16. 156

    Active Heat Method with Distribution Fiber Temperature Sensing for Suspension Location of Submarine Power Cable by ZHANG Weichao, ZHANG Li yong

    Published 2020-06-01
    “…In order to solve the problem that it is difficult to detect submarine power cables suspended in the sea, an active heat method is proposed to detect and locate suspended cable in the sea with distribution optical fiber temperature sensing technology. …”
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  17. 157

    A Weakly-Coupled Few-Mode Optical Fiber With a Graded Concave High-Index-Ring by Jiwei Zhang, Guorui Wang, Han Zhang, Fang Wang, Xin Yan, Xuenan Zhang, Shuguang Li, Tonglei Cheng

    Published 2021-01-01
    “…Using the finite element method (FEM), the parameters of the NH-HIR and GC-HIR optical fiber are adjusted to investigate their respective minimum effective refractive index difference (min&#x0394;<italic>n</italic><sub>eff</sub>), which is 2.012&#x00A0;&#x00D7;&#x00A0;10<sup>&#x2212;3</sup> for the former, and 2.532&#x00A0;&#x00D7;&#x00A0;10<sup>&#x2212;3</sup> for the latter. …”
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  18. 158

    Measurement of snowpack density, grain size, and black carbon concentration using time-domain diffuse optics by Connor Andrew Henley, Colin Richard Meyer, Jacob Ian Chalif, Joseph Lee Hollmann, Ramesh Raskar

    Published 2025-01-01
    “…Diffuse optical spectroscopy (DOS) techniques characterize scattering media by examining their optical response to laser illumination. …”
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  19. 159

    Curie Temperature and Optical Damage Resistance of Hf:Ce:Fe:LiNbO3 Crystals with Different Hf Concentrations by TAN Chao, DAI Li, HAN Xian-bo, SHAO Yu

    Published 2019-10-01
    “…A series of Hf:Ce:Fe:LiNbO3 crystal with variousHf4+(2,4,6,8mol%) ion concentration were grown by Czochralski method In order to study the effect of different doping concentration of Hf4+ ion on curie temperature and optical damage resistibility of Hf:Ce:Fe:LiNbO3 crystal Differential thermal analysis curve of Hf:Ce:Fe:LiNbO3 crystal was measured by differential thermal analyzers, and the curie temperature change of the crystal was analyzed The optical damage resistance of the crystal was measured by the facula distortion methodThe experimental results show that the Curie temperature increased by 20℃ and reaches the maximum of 1224℃ when the doping concentration of Hf4+ ions was 4mol% As the concentration of Hf4+ ions in the crystal increases, the optical damage resistanceability increases The optical damage resistance ability of the Hf(8mol%):Ce:Fe:LiNbO3  crystal is two orders of magnitude than Hf(2mol%):Ce:Fe:LiNbO3…”
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  20. 160

    Retinal Thickness in Patients with Parkinson’s Disease and Dopa Responsive Dystonia—Is There Any Difference? by Marko Svetel, Gorica Marić, Marija Božić, Una Lazić, Andona Milovanović, Jana Jakšić, Igor Petrović, Ana Dimitrijević, Milica Knežević, Tatjana Pekmezović

    Published 2025-05-01
    “…<b>Background/Objectives</b>: Certain aspects of retinal thickness assessed by optical coherence tomography (OCT) in patients with Parkinson’s disease (PD) require additional clarification. …”
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