Showing 3,341 - 3,360 results of 4,366 for search '"optics"', query time: 0.06s Refine Results
  1. 3341

    Graves’ Ophthalmopathy: VISA versus EUGOGO Classification, Assessment, and Management by Jesús Barrio-Barrio, Alfonso L. Sabater, Elvira Bonet-Farriol, Álvaro Velázquez-Villoria, Juan C. Galofré

    Published 2015-01-01
    “…Although the majority of GO patients have a mild, self-limiting, and nonprogressive ocular involvement, about 3–7% of GO patients exhibit a severe sight-threatening form of the disease due to corneal exposure or compressive optic neuropathy. An appropriate assessment of both severity and activity of the disease warrants an adequate treatment. …”
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  2. 3342

    The Low-Mass End of the MBH/Mhost Relation in Quasars by Roberto Decarli, Renato Falomo, Jari K. Kotilainen, Tomi Hyvönen, Michela Uslenghi, Aldo Treves

    Published 2012-01-01
    “…We imaged our sources in H band from the Nordic Optical Telescope. The quasar host galaxies have been resolved in 25 out of 26 observed targets. …”
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  3. 3343

    Atmospheric pressure plasma synthesis of adaptable coatings based on castor oil urethane dimethacrylate and their properties by Eusebiu-Rosini Ionita, Maria-Daniela Ionita, Antoniu Moldovan, Cristina Surdu-Bob, Violeta Melinte, Andreea L. Chibac-Scutaru, Andrada Lazea-Stoyanova

    Published 2025-01-01
    “…Urethane-dimethacrylate polymers are generated using light energy, in the presence of photoinitiators, and are the choice materials for many composite materials, biomaterials, optical materials or coatings. In this study, we present an alternative, new, synthesis method for castor oil polymethacrylate (CO-PMA) films by exposure of a liquid precursor (namely castor oil urethane dimethacrylate (CO-UDMA)) to a non-thermal atmospheric pressure cylindrical plasma source. …”
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  4. 3344

    Wireless Sensing Based on RFID and Capacitive Technologies for Safety in Marble Industry Process Control by Fabrizio Iacopetti, Sergio Saponara, Luca Fanucci, Bruno Neri

    Published 2013-01-01
    “…Current slab detection systems are based on electromechanical or optical devices at the machine entrance stage, suffering from deterioration and from the harsh environment. …”
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  5. 3345

    Rotating charged black holes in EMS theory: shadow studies and constraints from EHT observations by Odil Yunusov, Javlon Rayimbaev, Furkat Sarikulov, Muhammad Zahid, Ahmadjon Abdujabbarov, Zdeněk Stuchlík

    Published 2024-12-01
    “…Lastly, we computed and examined the standard shadow radius, equatorial, and polar quasinormal modes using the geometric-optic relationship between the parameters of the quasinormal mode and the conserved values along the geodesics.…”
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  6. 3346

    Exploring the twin potential of nanostructured TiO2:SeO2 as a promising visible light photocatalyst and selective fluorosensing platform by Aarti Sharma, Nidhi Sharotri, Pankaj Kandwal, Rakesh Kumar Sharma, Dhiraj Sud, Ritu Rai, Anna Hnydiuk-Stefan

    Published 2024-06-01
    “…The obtained nanostructure consists of uniform globular nanoparticles having approximate size of 170 nm and possess an optical band gap of 2.33 eV with absorption maxima at 473 nm. …”
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  7. 3347

    Investigations on microstructure and mechanical properties of Mg-5wt.% Cu-TiB2 composites produced via powder metallurgy route by Stalin B., Ravichandran M., Mohanavel V., Raj L.P.

    Published 2020-01-01
    “…X-ray diffraction (XRD) analysis was carried out for each composition. Optical microscopy, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) tests were conducted to study the characterization of the base alloy and the prepared new composite.…”
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  8. 3348

    The Effects of Multipath on the Performance of High Rate Digital QAM and OFDM Wireless Link Operating in Tunnels by Yehuda Taragin, Niv Elkayam, Gad A. Pinhasi, Yosef Pinhasi

    Published 2025-01-01
    “…This study presents an experimentally validated, precise, and versatile model for the propagation of modulated wireless signals in tunnels. Quasi-optical, multi-ray model is employed to derive the transfer function, describing the indoor propagation in the frequency domain. …”
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  9. 3349

    Isoflavone Attenuates the Caspase-1 and Caspase-3 Level in Cell Model of Parkinsonism by Jian-xin Xu, Hai-ping Song, Qing-Xia Bu, De-Peng Feng, Xiao-Fan Xu, Qian-Ru Sun, Xue-Li Li

    Published 2015-01-01
    “…There was no difference in cell viability between isoflavone + MPP+ and control group. Optical density of TH positive cells in isoflavone group was higher than in control, isoflavone + MPP+, and MPP+ only groups. …”
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  10. 3350

    Micro- and Nanoscale Pore Structure Characterization of Carbonates from the Xiaoerbulake Formation in the Tarim Basin, Northwest China by Jingyi Wang, Qinhong Hu, Mengdi Sun, Zhongxian Cai, Cong Zhang, Tao Zhang

    Published 2021-01-01
    “…The structures (geometry and connectivity) of nm to μm-scale pore networks in outcrop samples of carbonates from Xiaoerbulake Formation in Tarim Basin of China were studied by using optical microscopy, field emission-scanning electron microscopy (FE-SEM), as well as mercury intrusion porosimetry (MIP) with fractal analyses of the data, and spontaneous imbibition tests (distilled water). …”
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  11. 3351

    Impacts of Pore-Throat System on Fractal Characterization of Tight Sandstones by Dengke Liu, Zhaolin Gu, Ruixiang Liang, Junwei Su, Dazhong Ren, Bin Chen, Chuanqing Huang, Chao Yang

    Published 2020-01-01
    “…Hence, toward this end, we analyze the experimental data that are indicative of the pore-throat system, then we investigate the effect of fractal dimensions of pore-throat structures on petrologic and physical properties, and finally, the optical observations, fractal theory, and prediction model were integrated to explore the qualities of various reservoir types in tight sandstones. …”
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  12. 3352

    Visible Light Broadband Achromatic Metalens Based on Variable Height Nanopillar Structures by Yongyang Li, Haiyang Huang, Cong Zhang, Xiangshuo Shang, Yang Liu, Junyan Hu, Dengyu Shan, Naiyun Tang, Wei Li

    Published 2025-01-01
    “…However, like traditional optical meta-atoms, ordinary metalenses suffer from a significant chromatic aberration problem because it is difficult to design the phase distribution for different wavelengths on a single-layer metalens. …”
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  13. 3353

    Numerical Simulation of Impingement Heat Transfer for a Laminar Premixed Bunsen Flame by Darya A. Slastnaya, Roman V. Tolstoguzov, Leonid M. Chikishev, Vladimir M. Dulin

    Published 2025-01-01
    “…The present paper reports on the direct numerical simulation of the thermofluidic field in a laminar premixed impinging Bunsen flame in comparison with advanced optical measurements. The results reveal the phenomenon of the central recirculation zone formation between the tip of the Bunsen flame cone and the cold surface. …”
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  14. 3354

    A Teacher-Learning-Based Optimization Approach for Blur Detection in Defocused Images by Sana Munir Khan, Muhammad Tariq Mahmood

    Published 2025-01-01
    “…Defocus blur is often encountered in images taken with optical imaging equipment. It might be unwanted, but it might also be a deliberate artistic effect, which means it might help how we see the scenario in an image. …”
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  15. 3355

    State-of-the art of endoscopic semeiology of neuroendocrine tumors of the stomach by I. B. Perfil’yev, V. V Delektorskaya, Yu. P. Kuvshinov, B. K. Poddubny, G. V. Ungiadze, S. S. Pirogov, O. A. Malikhova

    Published 2011-06-01
    “…The complex endoscopic approach in diagnostics NET of the stomach was developed, that included standard examination, narrow-band imaging (NBI) both as independent study and in combination to optical magnification of the image (x115) and subsequent endoscopic ultrasound investigation (EUS) of the pathological focus. …”
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  16. 3356

    Functionally graded AZ91/WC nanocomposite fabricated via friction stir processing using a novel way by Subhi A.D., Abdulkareem M.H., Hussein H.A.

    Published 2022-01-01
    “…The properties of the functionally graded samples and AZ91 Mg alloy were evaluated by optical and scanning electron microscopy, energy dispersive spectroscopy, and other tests such as hardness, pin on disc wear and potentiodynamic polarization tests. …”
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  17. 3357

    Synthesis of CuO Nanoparticles from Copper(II) Schiff Base Complex: Evaluation via Thermal Decomposition by Ali Mudher Abdulkareem Al-Khazraji, Enass Jasim Waheed, Awf Abdul Rahman Ahmed

    Published 2025-01-01
    “…These nanoparticles and other metal oxides are highly valued in various industries for their optical, magnetic, and electrical properties. The experiment highlighted the synthesis of CuO nanoparticles through the thermal breakdown of copper(II) ions, starting with copper acetate, which reacted with the ligand to form the complex. …”
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  18. 3358

    Impact of Spatial Hole Burning and Linewidth Enhancement Factor on Distributed-Feedback Quantum Cascade Lasers: A Comprehensive Design Analysis by Sara Zaminga, Lorenzo Columbo, Carlo Silvestri, Mariangela Gioannini, Frederic Grillot

    Published 2024-01-01
    “…The purpose is to supply designers with a guideline to achieve the optimal structure for efficient single-mode emission, which is a highly required specification in manifold applications, like free-space optical communication. Numerical simulations are in good agreement with experimental findings relative to a DFB QCL operating at 9.34 <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m.…”
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  19. 3359

    Iron ore-petcoke briquettes as complementary burden for blast furnaces by Beatriz Fausta Gandra, Arthur Felipe Lino Oliveira, Maurício Covcevich Bagatini, Eduardo Osório

    Published 2025-03-01
    “…Metallurgically, the briquettes containing up to 10% by mass of PC met the blast furnace requirements. Optical microscopy and XRD analysis after reduction showed that metallic iron increased with the PC content of the briquettes.…”
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  20. 3360

    Predicted thermodynamic structural and elastic properties of SrCuP and SrCuSb for thermoelectric applications by N. Bioud, N. Benchiheub, A. Benamrani, M. A. Ghebouli, M. Fatmi, Faisal Katib Alanazi, R. Yekhlef

    Published 2025-02-01
    “…The absence of virtual phonon frequencies indicates high dynamic stability in both materials, with a band gap about 1 THz between optical and acoustic phonons in SrCuP and SrCuSb.…”
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