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  1. 1481

    A Performance Study of Dielectric Metalens with Process-Induced Defects by Yanyan Zhou, Ting Hu, Yu Li, Nanxi Li, Yuan Dong, Dongdong Li, Yuan Hsing Fu, Qize Zhong, Zhengji Xu, Shiyang Zhu, Qunying Lin, Navab Singh

    Published 2020-01-01
    “…Yet, no fabrication is without defects or errors. By using finite-difference time-domain (FDTD) calculation method, we study, in simulation, a set of common fabrication-induced errors such as inclined sidewall, critical dimension (CD) bias and process defects, and analyze their influences on the optical performances of two types of metalenses – one made of amorphous silicon and the other of silicon nitride. …”
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  2. 1482
  3. 1483

    Impact of eye fundus image preprocessing on key objects segmentation for glaucoma identification by Sandra Virbukaitė, Jolita Bernatavičienė

    Published 2023-11-01
    “…Therefore, the aim of this paper is to evaluate the mage preprocessing impact on OD and OC segmentation in different eye fundus images aligned by size. We adopted a mixed training data strategy by combining images of DRISHTI-GS, REFUGE, and RIM-ONE datasets, and applied image resizing incorporating various interpolation methods, namely bilinear, nearest neighbor, and bicubic for image resolution alignment. …”
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  7. 1487

    Quantitative Analysis of Foveal Microvascular Differences in Diabetic Macular Edema with and without Subfoveal Neuroretinal Detachment by Gao Jian, Xu Ya Jing, Li Yang, Liu Lun

    Published 2020-01-01
    “…Methods. This retrospective, cross-sectional study included 48 eyes from 42 patients with DME (20 SND+ and 28 SND- eyes). …”
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  8. 1488

    Nail changes under different CO2 fractionallaser parameters using white light interferometry by MA Hongyan, WANG Hongwei

    Published 2025-03-01
    “…Methods This study applied 60 different combinations of CO2 fractional laser parameters, including pulse widths ranging from 100-1 000 μs and powers from 10-60 W, on bovine hoof samples. …”
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  9. 1489

    Performance Evaluation of Five Different Low-Cost Particulate Matter Sensors for Monodisperse Test Aerosols by Martin Nothhelfer, Ana Maria Todea, Dieter Bathen, Christof Asbach

    Published 2025-05-01
    “…Abstract Purpose The performance of five different low-cost particulate matter sensor models has been characterized with monodisperse DEHS particles by comparing particle number and mass concentrations in different size fractions to the results of an optical particle counter (Palas welas) used as reference. …”
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  10. 1490
  11. 1491

    The accuracy of digital impression with different intraoral scanners on maxillary all on four implants: an in vitro study by Hesham M. El-Refay, Medhat Sameh Abdelaziz, Nora M. Cheta, Mohamed F. Abdallah

    Published 2025-04-01
    “…Materials and methods A maxillary completely edentulous model was 3D printed with four-cylinder holes measuring 4.3*10 mm, creating space for implant analogs at the canines and second premolar areas. …”
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  12. 1492

    The importance of different preoperative factors in the prognosis of functional results of uncomplicated surgery for idiopathic epimacular membranes by S. G. Toropygin, S. V. Nazarova, A. N. Maslov

    Published 2020-03-01
    “…The monitoring included, in addition to standard methods, Amsler grid test and optical coherence tomography of the macula. …”
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  13. 1493

    High-speed X-ray radiography for experiments in impact dynamics using high-power X-ray tube, cesium iodine scintillator and laboratory optical camera by Jan Šleichrt, Jan Falta, Tomáš Fíla

    Published 2023-10-01
    “…In this paper, we test imaging performance of a laboratory-based setup with a high-power X-ray tube, a scintillation panel, and an optical camera. Fast-rotating object and typical specimens for impact testing are irradiated with different power settings and quality of captured images is evaluated and analyzed. …”
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  14. 1494

    Choroidal Vascularity Index among Filipinos with Non-Neovascular and Neovascular Age-Related Macular Degeneration using Binarization of Enhanced Depth Imaging Optical Coherence Tom... by Minerva R. Paris, MD, DPBO, Carlo S. Ladores, MD, DPBO, Michael F. Fernandez, MD, DPBO

    Published 2024-12-01
    “…Objective: This study compared the choroidal vascularity indices (CVI) among eyes with neovascular, nonneovascular age-related macular degeneration (AMD) and healthy controls. Methods: Spectral-domain optical coherence tomography (OCT) with enhanced depth imaging (EDI) from 52 eyes of 33 subjects were analyzed and designated into 3 groups: control, non-neovascular AMD, and neovascular AMD. …”
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  15. 1495

    Performance Analysis of a Linear Gaussian- and tanh-Apodized FBG and Dispersion Compensating Fiber Design for Chromatic Dispersion Compensation in Long-haul Optical Communication N... by Isidore Nsengiyumva, Elijah Mwangi, George Kamucha

    Published 2022-01-01
    “…The highest result obtained for a three-stage Gaussian-apodized FBG and DCF design was a Q factor of 17.13 using an FBG length of 8 mm. The proposed method was also compared to current similar works and can be successfully implemented in long-haul optical communication.…”
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  16. 1496

    Performance of a low-cost optical particle counter (Alphasense OPC-N3) in estimating size-resolved dust emission flux using eddy covariance by S. Dupont, E. Lamaud, M. R. Irvine, J.-M. Bonnefond, A. González-Romero, A. González-Romero, A. Alastuey, C. González-Flórez, X. Querol, K. Kandler, M. Klose, C. Pérez García-Pando, C. Pérez García-Pando

    Published 2025-05-01
    “…The high-frequency sampling capacity (1 Hz) of some sensors may make them suitable for estimating dust emissions using the eddy-covariance method. Here, the capability of the low-cost OPC-N3 from Alphasense to estimate size-resolved dust flux using the eddy-covariance method is evaluated. …”
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    Validation of a Multi-Segment Kinematic Foot Model and Optical Motion Capture Using Bi-Planar X-Ray Fluoroscopy and a Markerless RSA Approach by Aida Valevicius, Kristen Bushey, Thomas Jenkyn

    Published 2024-12-01
    “…The results indicated that the height-to-length ratio of the medial longitudinal arch (MLA) and the transverse plane motion of the hindfoot were the most reliable kinematic measures, showing the best agreement between the optical motion capture and RSA methods. In contrast, the frontal plane motions of the hindfoot and forefoot showed the greatest differences, though these were not statistically significant at <i>p</i> < 0.05. …”
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