Showing 2,521 - 2,540 results of 4,095 for search '"spectroscopy"', query time: 0.05s Refine Results
  1. 2521

    Optical and Electrical Properties of TiO2/Co/TiO2 Multilayer Films Grown by DC Magnetron Sputtering by Marcos G. Valluzzi, Lucas G. Valluzzi, Marcos Meyer, María A. Hernández-Fenollosa, Laura C. Damonte

    Published 2018-01-01
    “…The samples were characterized by UV-visible spectroscopy, atomic force microscopy (AFM), and Kelvin probe force microscopy (KPFM). …”
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    Article
  2. 2522

    Pollution Abatement of Heavy Metals in Different Conditions by Water Kefir Grains as a Protective Tool against Toxicity by Giorgio Volpi, Marco Ginepro, Janeth Tafur-Marinos, Vincenzo Zelano

    Published 2019-01-01
    “…Two colonies of Water Kefir grain were used, and the concentrations of Cd, Co, Cr, Cu, Mn, Ni, Pb, Ba, and Ca were measured in Water Kefir grain solutions at different contact times (0, 24, 48, and 72 hours), different pH values in citric and acetic buffers, and different Water Kefir grains/metal solution ratios, with and without sucrose (5%). Optical emission spectroscopy was used to measure the concentrations of metal ions. …”
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  3. 2523

    Synthesis of MgFe2O4/Reduced Graphene Oxide Composite and Its Visible-Light Photocatalytic Performance for Organic Pollution by Fengmin Wu, Wenlu Duan, Mei Li, Hang Xu

    Published 2018-01-01
    “…The morphology, structure, and photocatalytic activities in the degradation of methyl orange (MO) reaction were systematically characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and UV-vis absorption spectroscopy, respectively. The results showed that the MFO/rGO composite exhibited enhanced photocatalytic performance in the photodegradation of MO under visible-light irradiation and reached a maximum degradation rate of 99% within 60 min of irradiation. …”
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    Article
  4. 2524

    Keggin-Type Heteropolyacid for Ring-Opening Polymerization of Cyclohexene Oxide: Molecular Weight Control by Ahmed Aouissi, Zeid Abdullah Al-Othman, Abdurrahman Salhabi

    Published 2015-01-01
    “…The resulting poly(1,2-cyclohexene oxide) (PCHO) was characterized by Fourier transform infrared (FTIR), nuclear magnetic resonance spectroscopy (1HNMR), gel-permeation chromatography (GPC), and differential scanning calorimetry (DSC). …”
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  5. 2525

    Advances in Spectroscopic Methods for Predicting Cheddar Cheese Maturity: A Review of FT-IR, NIR, and NMR Techniques by Sanja Seratlic, Bikash Guha, Sean Moore

    Published 2024-10-01
    “…This review synthesises current research findings, discusses the potential and limitations of each technique, and highlights future research directions. Overall, NIR spectroscopy emerges as the most promising, offering quick, nondestructive assessments and reasonably accurate compositional predictions, crucial for real-time maturation monitoring. …”
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  6. 2526

    Identification and Mass Spectrometric Fragmentation Pathways of Chemical Components in the Traditional Chinese Medicine Formula of Jiuwei Decoction by Jia-yu ZHAO, Yue-guang LYU, Tong XIN, Qian-qian GUO, Wen-ying ZHANG, Jin-hong LI, Hong-yu XUE, Qiang MA

    Published 2025-01-01
    “…Therefore, in the pursuit of analyzing active components in TCMs, it is advisable to delve deeper into separation and identification through the utilization of diverse techniques such as nuclear magnetic resonance spectroscopy, ultraviolet/infrared spectroscopy, and capillary electrophoresis-mass spectrometry.…”
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  7. 2527

    Crack of a helicopter main rotor actuator attachment: failure analysis and lessons learned by L. Allegrucci, F. De Paolis, A. Coletta, M. Bernabei

    Published 2013-09-01
    “…The accordance with the specification requirements about alloy composition was verified by quantitative elementary analysis through inductive coupled plasma spectroscopy (ICP); furthermore, semi-quantitative elementary analysis was locally verified by Energy dispersion spectroscopy X ray (EDS_RX). …”
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  8. 2528

    Large errors in soil carbon measurements attributed to inconsistent sample processing by R. J. Even, M. B. Machmuller, M. B. Machmuller, J. M. Lavallee, J. M. Lavallee, T. J. Zelikova, T. J. Zelikova, M. F. Cotrufo, M. F. Cotrufo

    Published 2025-01-01
    “…Moreover, we show promising results using FTIR spectroscopy coupled with predictive modeling for estimating % TC, % SIC, and % SOC in regions where spectral libraries exist.…”
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  9. 2529

    Crystal and Molecular Structure of Bis(2,2-diphenyl-N-(di-n-propylcarbamothioyl) acetamido)copper(II) Complex by Hakan Arslan, Ulrich Flörke, Demet Sezgin Mansuroglu

    Published 2011-01-01
    “…Bis(2,2-diphenyl-N-(di-n-propylcarbamothioyl) acetamido)copper(II) complex has been synthesized and characterized by elemental analysis and FT-IR spectroscopy. The crystal and molecular structure of the title compound has been determined from single crystal X-ray diffraction data. …”
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  10. 2530

    Mechanism analysis of mechanical extraction of Pleioblastus amarus fibers by saturated steam pretreatment by Xiaofeng Xu, Weipeng Yu, Xingduo Fan, Zhenhong Gong, Wei Zhang

    Published 2025-02-01
    “…Subsequently, Scanning electron microscopy (SEM) was employed to observe and comparatively analyze the microstructural morphology of the two types of fibers. Infrared spectroscopy (IR) was performed on the functional groups of bamboo after alkali boiling and saturated steam softening to investigate changes in cellulose, hemicellulose, and lignin. …”
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  11. 2531

    Preparation of Mesoporous Silica-Supported Palladium Catalysts for Biofuel Upgrade by Ling Fei, Harvind Kumar Reddy, Joshua Hill, Qianglu Lin, Bin Yuan, Yun Xu, Peter Dailey, Shuguang Deng, Hongmei Luo

    Published 2012-01-01
    “…The structure, morphologies, composition, and thermal stability of catalysts were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, transmission electron microscopy (TEM), energy-dispersive X-ray (EDX), and thermogravimetric analysis (TGA). …”
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  12. 2532

    Using a Micro Sampler on a Drone to Extract Organic Vapors—A Case Study of Monitoring Industrial Pollution by Wen-Hsi Cheng, Chung-Shin Yuan

    Published 2020-11-01
    “…The mainly emitted compounds, including aromatic hydrocarbons (toluene of 1,450 ± 650 ppb, ethylbenzene of 34 ± 12 ppb and xylenes of 51 ± 25 ppb), formaldehyde (50 ± 12 ppb), alkanes (propane of 30 ± 10 ppb), triacetin (7,620 ± 1600 ppb) and terephthalic acid (20 ± 5 ppb) were collected and then identified by the off-line gas chromatography (GC)-mass spectroscopy (MS) system in the laboratory. The quadrotor drone successfully monitored air pollution and tracked their emission sources from waste incineration, petroleum refinement, chemical processing and electronic part production.…”
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  13. 2533

    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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  14. 2534

    New Bioactive Metabolites from the Thermophilic Fungus Penicillium sp. Isolated from Ghamiqa Hot Spring in Saudi Arabia by Raha Orfali, Shagufta Perveen

    Published 2019-01-01
    “…The structures of the new compounds were unambiguously determined by comprehensive analysis of spectroscopic data, one- and two-dimensional NMR spectroscopy, and high-resolution mass spectrometry. …”
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  15. 2535

    Robust PLS Prediction Model for Saikosaponin A in Bupleurum chinense DC. Coupled with Granularity-Hybrid Calibration Set by Zhisheng Wu, Min Du, Xinyuan Shi, Bing Xu, Yanjiang Qiao

    Published 2015-01-01
    “…This study demonstrated particle size effect on the measurement of saikosaponin A in Bupleurum chinense DC. by near infrared reflectance (NIR) spectroscopy. Four types of granularity were prepared including powder samples passed through 40-mesh, 65-mesh, 80-mesh, and 100-mesh sieve. …”
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  16. 2536

    Performance of Rejuvenated Asphalt and Mixtures with Waste Engine Oil Bottom and Liquid Styrene-Butadiene Rubber by Gang Zhou, Yi Tian, Liang Gong, Zhansheng Pang, Tianquan Chen

    Published 2022-01-01
    “…By testing the basic physical properties of asphalt and using the high- and low-temperature rheology, differential scanning calorimetry, Fourier infrared spectroscopy, and atomic force microscopy (AFM) tests, the index and microstructure changes of asphalt before and after aging and regeneration, from macrolevels and microlevels, were studied, along with the high- and low-temperature performance and water stability of the rejuvenated asphalt mixture. …”
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  17. 2537

    GC-MS Analysis and Study of the Antimicrobial Activity of Citrus paradisi, Citrus aurantifolia, and Citrus sinensis Peel Essential Oils as Hand Sanitizer by Isra Osman Mohammed, Ayat Ahmed Alrasheid, Saad Mohammed Hussein Ayoub

    Published 2024-01-01
    “…The qualitative and quantitative analysis of the hydrodistillated essential oils of peels of grapefruit (Citrus paradisi), lime (Citrus aurantifolia), and orange (Citrus sinensis) were carried out using gas chromatography mass spectroscopy. The disc diffusion method was used to screen the antibacterial activity of the essential oils against Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, Staphylococcus aureus, and Candida albicans compared with a 78% alcohol-based commercial hand sanitizer. …”
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  18. 2538

    Polarization-independent isotropic metasurface with high refractive index, low reflectance, and high transmittance in the 0.3-THz band by Sato Kento, Suzuki Takehito

    Published 2023-05-01
    “…Measurements by terahertz time-domain spectroscopy (THz-TDS) verify that the fabricated metasurface with a high refractive index, low reflectance, and high transmittance works for terahertz waves with any polarization direction and results in the unprecedented material characteristics with polarization independence. …”
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  19. 2539

    Engineering performance and environmental assessment of sustainable concrete incorporating nano silica and metakaolin as cementitious materials by Namitha Raveendran, Vasugi Krishnan

    Published 2025-01-01
    “…Later, X-ray Diffraction spectroscopy and Field-emission scanning electron microscopy were employed for microstructural analysis. …”
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  20. 2540

    Thermal cracking of effective decontamination and recycling of lubricating oil: mechanisms, conditions, and performance enhancements by Nafeena Abdul Munaf R, Senthil Kumar Kandasamy, Bakkiyaraj M, Dheeraj Kumar Gara, Abdul Munaf A

    Published 2025-01-01
    “…Analytical techniques such as thermogravimetry (TGA), Fourier-transform infrared spectroscopy (FTIR), and thermograms (DSC) are employed to characterize the chemical composition of the solid produced after treatment. …”
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