Showing 261 - 280 results of 544 for search '"Ultraviolet"', query time: 0.06s Refine Results
  1. 261

    ZnFe2O4-TiO2 Nanoparticles within Mesoporous MCM-41 by Aidong Tang, Yuehua Deng, Jiao Jin, Huaming Yang

    Published 2012-01-01
    “…A novel nanocomposite ZnFe2O4-TiO2/MCM-41 (ZTM) was synthesized by a sol-gel method and characterized through X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), N2 adsorption-desorption, Raman spectroscopy, and ultraviolet visible (UV-vis) spectrophotometry. The results confirmed the incorporation of ZnFe2O4-TiO2 nanoparticles inside the pores of the mesoporous MCM-41 host without destroying its integrity. …”
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  2. 262

    Synthesis, Characterization, and Low Temperature Sintering of Nanostructured BaWO4 for Optical and LTCC Applications by S. Vidya, Sam Solomon, J. K. Thomas

    Published 2013-01-01
    “…The sample shows poor transmittance in ultraviolet region while maximum in visible-near infrared regions. …”
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    Article
  3. 263

    Theoretical Study of the π-Bridge Influence with Different Units of Thiophene and Thiazole in Coumarin Dye-Sensitized Solar Cells by Rody Soto-Rojo, Jesús Baldenebro-López, Daniel Glossman-Mitnik

    Published 2016-01-01
    “…Geometry optimization, the energy levels and electron density of the Highest Occupied Molecular Orbital and the Lowest Unoccupied Molecular Orbital, and ultraviolet-visible absorption spectra were calculated by Density Functional Theory (DFT) and Time-Dependent-DFT. …”
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    Article
  4. 264

    Optimization of Green Synthesis of Selenium Nanoparticles and Evaluation of Their Antifungal Activity against Oral Candida albicans Infection by Mohsen Safaei, Hamid Reza Mozaffari, Hedaiat Moradpoor, Mohammad Moslem Imani, Roohollah Sharifi, Amin Golshah

    Published 2022-01-01
    “…Then, optimizing the synthesis of the studied nanoparticles, their properties were evaluated using Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Vis), X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), electron transmission microscopy (TEM), and thermogravimetric analysis (TGA) to confirm the synthesis of nanoparticles with suitable conditions. …”
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    Article
  5. 265

    Self-Assembly of TiO2/CdS Mesoporous Microspheres with Enhanced Photocatalytic Activity via Hydrothermal Method by Sujing Yu, Juncheng Hu, Jinlin Li

    Published 2014-01-01
    “…The samples were characterized by X-ray powder diffraction (XRD), ultraviolet-visible diffuse reflectance spectroscopy (DRS), transmission electron microscopy (TEM), energy-dispersive spectroscopy analysis (EDS), high-resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS), and photoluminescence spectra (PL). …”
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  6. 266

    Methylxanthine and Flavonoid Contents from Guarana Seeds (Paullinia cupana): Comparison of Different Drying Techniques and Effects of UV Radiation by André Luiz Sampaio da Silva Junior, Madson Moreira Nascimento, Herick Macedo Santos, Ivon Pinheiro Lôbo, Rosilene Aparecida de Oliveira, Raildo Mota de Jesus

    Published 2024-01-01
    “…Our findings indicated that the flavan-3-ols content in sun-dried guarana samples was lower compared to those dried using the alguidar oven, possibly due to exposure to ultraviolet radiation from solar energy. Conversely, we observed no significant differences (p>0.05) in the average contents of methylxanthines between the two drying methods. …”
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  7. 267

    An experimental investigation into malachite green degradation using highly active NiFe2O4/Bi4O5I2 photocatalyst under visible light by Woon Xuet-Wei, Lam Sze-Mun, Mohamed Abdul Rahman, Zeng Honghu

    Published 2025-01-01
    “…Various characterization techniques, including X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), and Mott-Schottky (M-S) analysis were employed to scrutinize the physical, chemical, optical, and electrical characteristics of the as-synthesized photocatalyst. …”
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  8. 268

    Determination of Temperature-Dependent Stress State in Thin AlGaN Layer of AlGaN/GaN HEMT Heterostructures by Near-Resonant Raman Scattering by Yanli Liu, Xifeng Yang, Dunjun Chen, Hai Lu, Rong Zhang, Youdou Zheng

    Published 2015-01-01
    “…The temperature-dependent stress state in the AlGaN barrier layer of AlGaN/GaN heterostructure grown on sapphire substrate was investigated by ultraviolet (UV) near-resonant Raman scattering. Strong scattering peak resulting from the A1(LO) phonon mode of AlGaN is observed under near-resonance condition, which allows for the accurate measurement of Raman shifts with temperature. …”
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    Article
  9. 269

    Used High Collimation UV-LEDs With a Miniaturized Optomechanical Device for the Detection of Direct Bilirubin by Zhi Ting Ye, Shen Fu Tseng, Jun Yi Wu, Hsin Ching Kuo

    Published 2024-01-01
    “…Therefore, this study proposed a non-invasive method, using high collimation ultraviolet-light-emitting diodes (HC UV-LEDs) as the light source to design a miniaturized optomechanical device (MOD) for direct bilirubin detection in urine. …”
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  10. 270

    Photocatalytic Degradation of Aniline Using TiO2 Nanoparticles in a Vertical Circulating Photocatalytic Reactor by F. Shahrezaei, Y. Mansouri, A. A. L. Zinatizadeh, A. Akhbari

    Published 2012-01-01
    “…Photocatalytic degradation of aniline in the presence of titanium dioxide (TiO2) and ultraviolet (UV) illumination was performed in a vertical circulating photocatalytic reactor. …”
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  11. 271

    Synthesis of Zinc Oxide Nanoparticles Using Leaf Extract of Lippia adoensis (Koseret) and Evaluation of Its Antibacterial Activity by Meron Girma Demissie, Fedlu Kedir Sabir, Gemechu Deressa Edossa, Bedasa Abdisa Gonfa

    Published 2020-01-01
    “…The biosynthesized zinc oxide nanoparticles were characterized using thermogravimetric analysis, X-ray diffraction, scanning electron microscopy-energy dispersive spectroscopy, transmission electron microscopy, ultraviolet-visible spectroscopy, and Fourier transform infrared spectroscopy. …”
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    Article
  12. 272

    Determination of Ketorolac in the Effluent from a Hospital Treating Plant and Kinetics Study of Its Photolytic Degradation by Hector Hugo Ortega Soto, Jorge Javier Ramírez García, Paula Gamboa Suárez, Angie Michelle Dávila Estrada

    Published 2017-01-01
    “…Samples were in direct contact with ultraviolet light in a dark chamber, equipped with two mercury lamps (254 nm) at a radiation source of 15 W. …”
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    Article
  13. 273

    Assessment of Halonitromethanes Formation Potentials Under Different Disinfection Scenarios in Low SUVA Water by Sehnaz Sule Kaplan-Bekaroglu, Sebnem Genisoglu, Cihan Ozgur

    Published 2022-07-01
    “…Halonitromethanes formation potentials tests were investigated under five different disinfection conditions in Egirdir Lake with low specific ultraviolet absorbance (SUVA) value. The results showed that ozone/chlorine formed the highest halonitromethanes followed by in the order of ozone/chloramine and chlorine only. …”
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    Article
  14. 274

    UV Dose Governs UV-Polymerized Polyacrylamide Hydrogel Modulus by Saahil Sheth, Era Jain, Amin Karadaghy, Sana Syed, Hunter Stevenson, Silviya P. Zustiak

    Published 2017-01-01
    “…Alternatively, PAA gels could be made by free radical polymerization (FRP) using ultraviolet (UV) photopolymerization, a method which is quicker, less tedious, and less toxic. …”
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    Article
  15. 275

    Impact of Vitamin D on Skin Aging, and Age-Related Dermatological Conditions by Sankalya S. Ambagaspitiya, Gayan A. Appuhamillage, Sunil J. Wimalawansa

    Published 2025-01-01
    “…In contrast, extrinsic factors associated with advanced age, primarily caused by exposure to ultraviolet (UV) radiation, lead to coarse wrinkles, solar elastosis, hyperkeratosis, irregular pigmentation, and skin cancers. …”
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  16. 276

    Thermodynamics of Steel Corrosion in Acid Media Containing Organophosphorus Derivatives by E. Khamis, M.N. Moussa, E.S.H. El-Ashry, M. Ibrahim, A.K. Ibrahim

    Published 1996-06-01
    “…Structure–protection correlations for seven organophosphorus compounds have been studied over the temperature range 25–50°C using potentiodynamic polarization and gasometry techniques. Ultraviolet absorption spectra show that the inhibitors are stable in 1 M and 5 M H 2 SO 4 solutions at 50°C. …”
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  17. 277

    Curcumin Is an Iconic Ligand for Detecting Environmental Pollutants by T. Devasena, N. Balasubramanian, Natarajan Muninathan, Kuppusamy Baskaran, Shani T. John

    Published 2022-01-01
    “…Due to keto-enol tautomerism, it is capable of giving sensitive signals such as fluorescence, luminescence, ultraviolet absorption shifts, and electrochemical data. …”
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  18. 278

    Building up Graphene-Based Conductive Polymer Composite Thin Films Using Reduced Graphene Oxide Prepared by γ-Ray Irradiation by Siyuan Xie, Bowu Zhang, Chunlei Wang, Ziqiang Wang, Linfan Li, Jingye Li

    Published 2013-01-01
    “…The electrical and optical properties of the obtained composite films were tested, showing good electrical conductivity with visible transmittance but strong ultraviolet absorbance.…”
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  19. 279

    Preparation and Characterization of Visible-Light-Activated Fe-N Co-Doped TiO2 and Its Photocatalytic Inactivation Effect on Leukemia Tumors by Kangqiang Huang, Li Chen, Jianwen Xiong, Meixiang Liao

    Published 2012-01-01
    “…The Fe-N co-doped TiO2 nanocomposites were synthesized by a sol-gel method and characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), ultraviolet-visible absorption spectroscopy (UV-vis) and X-ray photoelectron spectroscopy (XPS). …”
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  20. 280

    Experimental Characterization, Computational Investigation, and Structure-propertyeactivity Relationship Studies of Nickel Ferrite Nanostructures by Ali Ben Ahmed

    Published 2024-10-01
    “…UV-visible spectroscopy measures the absorbance of ultraviolet or visible light by a material, which can give insight into its electronic structure, band gap, and optical properties. …”
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