Search alternatives:
optical » optimal (Expand Search)
Showing 1,441 - 1,460 results of 3,725 for search 'optical different (method OR methods)', query time: 0.14s Refine Results
  1. 1441

    Microstructure analysis of metal artefacts from the Carpathian Basin – a brief methodology of the Argum's metallographic practice by Béla Török, Péter Barkóczy, Árpád Kovács

    Published 2019-03-01
    “…Nowadays it is not necessary to use complicated etching methods to study the different metallographic phases. …”
    Article
  2. 1442
  3. 1443
  4. 1444

    Comparison of slot tolerance with manufacturing measurements of different stainless steel self-ligating brackets by Noor L. Aftan, Dheaa H Al-Groosh, Abdullah Albarkheel

    Published 2024-12-01
    “…Materials and methods: Eighty upper first premolar brackets of four different brands {Damon Q (Ormco corporation, Brea, California, USA), DTC (Medical apparatus Cor., Hangzhou, China), IOS (Pactive self-ligating bracket, IOS, Stafford, USA), Lotus Plus interactive bracket (Orthotechnology Inc., southern Ct, West Columbia, USA)} of stainless steel self-ligating brackets with claimed slot dimensions of 0.559 mm (0.022") in height, 0.711mm (0.028") in depth and with zero taper angle were used (twenty brackets of each brand). …”
    Get full text
    Article
  5. 1445

    Ultra-fast real time ethanol sensing behavior and reduction in optical bandgap of the hydrothermally synthesized V2O5/ZnO nanocomposites by Abdul Hakim Shah, Muhammad Anas, Muneerah Alomar, Muhamad Hanif, Muhammad Zubair, Nazir ur Rehman

    Published 2025-06-01
    “…Owing to the significance of metal oxides based nanostructures for the gas sensing applications, this work reports the hybrid V2O5/ZnO nano-particles/rods nanocomposites (with different V2O5-ZnO contents ratios; (10:1 (VZ-I), 8:1 (VZ-II) and 6:1 (VZ-III)) prepared via hydrothermal method and characterized for structure, morphology, composition, photoluminescence and optical bandgap by XRD, FESEM, EDX, Photo-Luminescence (PL) and UV–Vis spectroscopy, respectively. …”
    Get full text
    Article
  6. 1446

    Accuracy of Diabetic Retinopathy Staging with a Deep Convolutional Neural Network Using Ultra-Wide-Field Fundus Ophthalmoscopy and Optical Coherence Tomography Angiography by Toshihiko Nagasawa, Hitoshi Tabuchi, Hiroki Masumoto, Shoji Morita, Masanori Niki, Zaigen Ohara, Yuki Yoshizumi, Yoshinori Mitamura

    Published 2021-01-01
    “…Method. The study included 491 ultra-wide-field fundus ophthalmoscopy and optical coherence tomography angiography (OCTA) images that passed an image-quality review and were graded as no apparent DR (NDR; 169 images), mild nonproliferative DR (NPDR; 76 images), moderate NPDR (54 images), severe NPDR (90 images), and proliferative DR (PDR; 102 images) by three retinal experts by the International Clinical Diabetic Retinopathy Severity Scale. …”
    Get full text
    Article
  7. 1447

    Inhibition of IGF-1Rα affects the differentiation fate of rat optic cup-derived retinal stem cells to retinal ganglion cells in vitro by Qi-You Li, Xiao-Ling Tan, Hai-Wei Xu, Yu-Xiao Zeng, Xiao-Yong Huang

    Published 2025-04-01
    “…METHODS: OC-RSCs were isolated from optic cups of rats on embryonic day 12.5, and high-purity OC-RSCs were obtained by conditioned culture and passage. …”
    Get full text
    Article
  8. 1448

    Hybrid MDM-MIMO radio-over-free space optical system for high-capacity 5G and beyond networks under strong and weak scintillation by Sushank Chaudhary, Sunita Khichar, Muhammad Saadi, Amir Parniarifard, Abhishek Sharma

    Published 2025-03-01
    “…IntroductionThe increasing demand for high-capacity, low-latency communication in 5G and Beyond networks necessitates innovative solutions to overcome the limitations of conventional wireless technologies. Optical Wireless Communication (OWC) technologies, particularly Radio-over-Free Space Optical (RoFSO) systems, offer a promising approach to addressing spectrum congestion and environmental attenuation challenges.MethodsThis study presents a hybrid Mode Division Multiplexing (MDM)-Multiple Input Multiple Output (MIMO) RoFSO system operating at an 80 GHz·mm-wave carrier to achieve high-capacity data transmission. …”
    Get full text
    Article
  9. 1449

    Optimized Support Vector Machine Assisted BOTDA for Temperature Extraction With Accuracy Enhancement by Hongna Zhu, Lei Yu, Yufeng Zhang, Le Cheng, Zhenyu Zhu, Jiayin Song, Jinli Zhang, Bin Luo, Kai Yang

    Published 2020-01-01
    “…Brillouin optical time domain analyzer (BOTDA) assisted by optimized support vector machine (SVM) algorithm for accurate temperature extraction is presented and experimentally demonstrated. …”
    Get full text
    Article
  10. 1450
  11. 1451

    Experimental Validation of Designs for Permeable Diffractive Lenses Based on Photon Sieves for the Sensing of Running Fluids by Veronica Pastor-Villarrubia, Angela Soria-Garcia, Joaquin Andres-Porras, Jesus del Hoyo, Mahmoud H. Elshorbagy, Luis Miguel Sanchez-Brea, Javier Alda

    Published 2025-05-01
    “…When the photon sieve is intended to be used as an optical element for the monitoring of running fluids, one of the designs studied, labeled the Ring-by-Ring method, behaves in a quite balanced manner and thus has become the preferred choice. …”
    Get full text
    Article
  12. 1452

    A retrospective study of posterior vitreous detachment in patients with non-arteritic anterior ischemic optic neuropathy referred to Rasoul Akram hospital in 2022–2023 by Mina Rabbani, Mostafa Soltan Sanjari, Ali Sadeghi, Hanieh Neshastesaz, Zahra Rabbani, Salar Khiabani

    Published 2025-04-01
    “…Hence, future research should be designed and implemented to compare the mechanism of PVD and non-arteritic ischemic optic neuropathy (NAION) at the same time in different age groups.…”
    Get full text
    Article
  13. 1453
  14. 1454
  15. 1455

    Choroidal Thickness and Ganglion Cell Complex in Pubescent Children with Type 1 Diabetes without Diabetic Retinopathy Analyzed by Spectral Domain Optical Coherence Tomography by Joanna Gołębiewska, Andrzej Olechowski, Marta Wysocka-Mincewicz, Marta Baszyńska-Wilk, Artur Groszek, Agnieszka Czeszyk-Piotrowicz, Mieczysław Szalecki, Wojciech Hautz

    Published 2018-01-01
    “…To assess the retinal and choroidal thickness and ganglion cell complex (GCC) in pubescent children with type 1 diabetes (T1D) without diabetic retinopathy (DR), using spectral domain optical coherence tomography (SD-OCT). Materials and Method. …”
    Get full text
    Article
  16. 1456
  17. 1457
  18. 1458

    Imposed Optical Defocus Induces Isoform-Specific Up-Regulation of TGFβ Gene Expression in Chick Retinal Pigment Epithelium and Choroid but Not Neural Retina. by Yan Zhang, Suravi Raychaudhuri, Christine F Wildsoet

    Published 2016-01-01
    “…<h4>Purpose</h4>This study investigated the gene expression of TGFβ isoforms and their receptors in chick retina, retinal pigment epithelium (RPE), and choroid and the effects of short-term imposed optical defocus.<h4>Methods</h4>The expression of TGFβ isoforms (TGF-β1, 2, 3) and TGFβ receptors (TGFBR1, 2, 3) was examined in the retina, RPE, and choroid of young White-Leghorn untreated chicks (19 days-old). …”
    Get full text
    Article
  19. 1459

    Detection of Retinal and Choriocapillaris Microvascular Changes in Retinal Vein Occlusion and Fellow Eyes by Optical Coherence Tomography Angiography: A Systematic Review and Meta-... by Linxin Wei, Qing Zhao, Youxin Chen

    Published 2024-12-01
    “…Methods A comprehensive search of the PubMed, Embase, and Ovid databases was conducted to identify studies comparing OCTA metrics among RVO, RVO-fellow, and control eyes. …”
    Get full text
    Article
  20. 1460

    Long-Term Clinically Significant Posterior Capsular Opacification Development Pattern in Eyes Implanted with an Aspheric Monofocal Intraocular Lens with a Square Optic Edge by Javier Placeres Dabán, Juan Carlos Elvira, César Azrak, Lucía Rial, David P. Piñero, José I. Belda

    Published 2021-01-01
    “…To analyse the posterior capsular opacification (PCO) development pattern in the long term in eyes implanted with a monofocal intraocular lens (IOL) with a square edge all around the optic. Methods. Longitudinal retrospective study is data analyzed from a total of 7059 eyes from 4764 patients (mean age: 75.8 years) undergoing cataract surgery with implantation of an aspheric monofocal IOL (Bi-Flex HL 677AB/677P, Medicontur, Budapest, Hungary). …”
    Get full text
    Article