Showing 3,561 - 3,580 results of 4,095 for search '"spectroscopy"', query time: 0.06s Refine Results
  1. 3561

    Effect of Extraction Methods on Physicochemical and Functional Properties of Nannochloropsis Proteins by Suyan HUANG, Rong CAO, Nan LIU, Yong SUN, Deqing ZHOU, Shanshan WANG

    Published 2025-01-01
    “…Fourier transform infrared spectroscopy (FTIR) showed that all three proteins displayed typical protein absorption peaks, however, the secondary structure changed. …”
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  2. 3562

    Design and Preparation of Activated Carbon with High Specific Surface Area and Porosity Through an Organic Activator Coupled with CO2 Activation by Yizhong Li, Xiaoqing Yan, Zhi Cui, Jingkang Yuan, Baorong Xu, Guidong Yang

    Published 2025-02-01
    “…By means of thermogravimetric (TG) analysis and simultaneous thermal analysis‐Fourier transform infrared spectroscopy‐gas chromatography/mass spectrometry a suggested activation process and mechanism of the novel organic activators is proposed. …”
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  3. 3563

    Simultaneous Determination of Mineral Nutrients and Toxic Metals in M. stenopetala from Southern Ethiopia: A Comparative Study of Three Cultivating Areas Using MP-AES by Ashenafi Shemnsa, Wondimeneh Dubale Adane, Merid Tessema, Endale Tesfaye, Gizaw Tesfaye

    Published 2024-01-01
    “…In this study, for the first time, the levels of thirteen micro- and macromineral nutrients in the leaves, seeds, and supportive soil of Moringa stenopetala (M. stenopetala) were simultaneously determined using microwave plasma atomic emission spectroscopy (MP-AES). The samples were collected during the arid season, in 2019 from the three main M. stenopetala growing areas in southern Ethiopia (Chano Mile Kebele, Nechisar Kebele, and Konso Special Woreda). …”
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  4. 3564

    Polymer-Free Electrospinning of β-Cyclodextrin–Oligolactide for Magnolol and Honokiol Pharmaceutical Formulations by Diana-Andreea Blaj, Catalina A. Peptu, Mihaela Balan-Porcarasu, Cristian Peptu, Cristina Gabriela Tuchilus, Lacramioara Ochiuz

    Published 2025-01-01
    “…The morphology of the resulting fibers is established by SEM and further characterized using FTIR and NMR spectroscopy to confirm the successful incorporation of MG and HK. …”
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  5. 3565

    Assessing moisture content in XLPE power cables using frequency-dependent tangent delta measurements by Babu Naik Gugulothu, Sanjay Lakshminarayanan, Madhu Palati, Suresh Haleyur Lakshmegowda, Mahipal Bukya

    Published 2025-01-01
    “…The study employed frequency domain spectroscopy to examine the dielectric properties of XLPE cable samples with varying moisture content levels. …”
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  6. 3566

    Hydrolysis of Methionine- and Histidine-Containing Peptides Promoted by Dinuclear Platinum(II) Complexes with Benzodiazines as Bridging Ligands: Influence of Ligand Structure on th... by Snežana Rajković, Beata Warżajtis, Marija D. Živković, Biljana Đ. Glišić, Urszula Rychlewska, Miloš I. Djuran

    Published 2018-01-01
    “…The chlorido Pt(II) complexes 1–3 were converted into the corresponding aqua species 1a–3a, and their reactions with an equimolar amount of Ac–L–Met–Gly and Ac–L–His–Gly dipeptides were studied by 1H NMR spectroscopy in the pH range 2.0 < pH < 2.5 at 37°C. …”
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  7. 3567

    The Interplay of Surface Composition, Mineralogy, and Physical Conditions That Affect the Surface Release Processes and Particle Environment of Mercury by Peter Wurz, Noah Jäggi, André Galli, Audrey Vorburger, Deborah Domingue, Paul S. Szabo, Johannes Benkhoff, Océane Barraud, Daniel Wolf Savin

    Published 2025-01-01
    “…In situ composition measurements of the exosphere can contribute to the study of the composition of the surface, together with a range of remote sensing techniques (ultraviolet, visible, infrared, X-ray, gamma-ray, and neutron spectroscopy). The external drivers for the particle release from the surface are solar photons, solar wind plasma, and micrometeoroid impacts. …”
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  8. 3568

    Effects of biogenic CBM generation on microcrystalline and functional groups of high-volatile bituminous coal by Aikuan Wang, Qiang Huang, Zhiyuan Yao

    Published 2025-02-01
    “…In the course of the experiment, X-ray diffraction (XRD) analysis is employed to examine the coal microcrystal structures, whereas Fourier transform infrared (FTIR) spectroscopy serves for the analysis of the chemical structures. …”
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  9. 3569

    Optimization of Starch Saccharification Process and Structural Characterization of Starch Using Low Transglycosidation Activity Glucoamylase GluM3 by Haiyue FAN, Zhao YU, Zhengjie ZHANG, Ming LI, Yingguo BAI, Feng YU, Zhongyuan LI

    Published 2025-02-01
    “…Structural characterization of starch granules was conducted using methods such as scanning electron microscopy, X-ray diffraction, and infrared spectroscopy. The results showed that the optimal saccharification conditions were a liquefaction DE value of 16%, temperature at 66 ℃, pH at 3.7, time at 3 h, enzyme dosage at 450 U/g with pullulanase dosage at 1.25 U/g. …”
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  10. 3570

    Elucidation of novel, alternative, fiber-reinforced iron-based pozzolanic composites as SCMs by Hafiz Muhammad Nadir, Ash Ahmed, Ikram Moshi

    Published 2024-07-01
    “…The microstructural analysis using X-ray diffraction/fluorescence, scanning electron microscopy/energy-dispersive analysis with X-ray spectroscopy supported the strength and durability parameters by showing minimal/no ettringite formation and increased calcium silicate hydrates gel formation due to the use of FeCO3 and pozzolans. …”
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  11. 3571

    Electroanalytical Performance of a Carbon Paste Electrode Modified by Coffee Husks for the Quantification of Acetaminophen in Quality Control of Commercialized Pharmaceutical Table... by Serge Foukmeniok Mbokou, Maxime Pontié, Jean-Philippe Bouchara, Francis Merlin Melataguia Tchieno, Evangeline Njanja, Assad Mogni, Pierre Yves Pontalier, Ignas Kenfack Tonle

    Published 2016-01-01
    “…Scanning electron microscopy (SEM) and SEM-energy dispersive X-ray spectroscopy (SEM-EDX) were, respectively, used for the morphological and elemental characterization of coffee husks prior to their utilization. …”
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  12. 3572

    Impact of Ramadan Intermittent Fasting on Salivary pH, Flow Rate, and Electrolyte Levels in Healthy Adult Men by Sinda Yacoub, Mehdi Khemiss, Amira Besbes, Helmi Ben Saad

    Published 2025-02-01
    “…., calcium, potassium, sodium, chloride, and phosphate) were determined using inductively coupled plasma-optical emission spectroscopy. Twenty-seven participants completed all three sessions. …”
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  13. 3573

    Effect of Preservation Methods on Physicochemical Quality, Phenolic Content, and Antioxidant Activity of Stevia Leaves by Nadia Hidar, Abdelhamid Noufid, Ayoub Mourjan, El Mustapha El Adnany, Safa Mghazli, Mohammed Mouhib, Abderrahim Jaouad, Mostafa Mahrouz

    Published 2021-01-01
    “…However, the main functional groups were stable as confirmed by Fourier transform infrared spectroscopy analysis. The effects on chlorophyll content, phenolic profile, and antioxidant properties were evaluated before and after ten months of storage. …”
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  14. 3574

    Impact of Saharan dust on particulate matter characteristics in an urban and a natural locality in Central Europe by Jan Loskot, Daniel Jezbera, Martina Nalezinková, Adéla Holubová Šmejkalová, Danilo Fernandes, Jan Komárek

    Published 2024-12-01
    “…Airborne dust collected before and during the Saharan dust event was then studied using scanning electron microscopy combined with energy-dispersive spectroscopy. These methods were employed to determine the sizes and elemental compositions of the individual dust particles. …”
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  15. 3575

    Solution combustion synthesis of ZnO doped CuO nanocomposite for photocatalytic and sensor applications by A. Naveen Kumar, M. Balakrishna, Usha Desai, R. Rakshith, K. M. Ambika, P. Soumya, C. R. Ravikumar, S. Senthil Vadivu, Nithesh Naik

    Published 2025-01-01
    “…The electrochemical properties of the prepared NPs were studied using cyclic voltammetry and electrochemical impedance spectroscopy (EIS). Solutions of glucose and ascorbic acid were effectively sensed using modified carbon paste electrodes. …”
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  16. 3576

    Different approaches for plasma nitrocarburizing of austenitic stainless steel using a plasma-activated solid carbon precursor in a hot-wall reactor by Saeed M. Jafarpour, Anke Dalke, Horst Biermann

    Published 2025-01-01
    “…Additionally, the type and concentrations of the treatment-relevant gas species generated during each treatment are measured in real-time using laser absorption spectroscopy. The results revealed the potential of using a plasma-activated solid carbon precursor in a hot-wall reactor for an efficient nitrocarburizing treatment of AISI 316L. …”
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  17. 3577
  18. 3578

    Thermal Stability of Schottky Contacts and Rearrangement of Defects in β‐Ga2O3 Crystals by Palvan Seyidov, Joel B. Varley, Ymir Kalmann Frodason, Detlef Klimm, Lasse Vines, Zbigniew Galazka, Ta‐Shun Chou, Andreas Popp, Klaus Irmscher, Andreas Fiedler

    Published 2025-01-01
    “…Besides the examination of the Schottky barrier parameters, contact‐dependent defect levels are investigated by deep‐level transient spectroscopy (DLTS) in a 100–650 K (ramp‐up) and 650–100 K (ramp‐down) temperature cycle. …”
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  19. 3579

    Inhibition mechanism of self-assembled epoxy-silane/dithiol film on copper corrosion by Chen Sang, Juan Qiu, Boyu Yuan, Kaiyu Zhang, Nan Huang, Qinghong Wang, Houyi Ma, Liang Li, Chao Wang

    Published 2025-03-01
    “…Sputtering measurements by X-ray photoelectron spectroscopy showed that some Cl− ions permeated into the outer layer of the epoxy-silane/DOT film and formed CuCl interlayer with the Cu+ ions in the film. …”
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  20. 3580

    Metal and Precursor Effect during 1-Heptyne Selective Hydrogenation Using an Activated Carbon as Support by Cecilia R. Lederhos, Juan M. Badano, Nicolas Carrara, Fernando Coloma-Pascual, M. Cristina Almansa, Domingo Liprandi, Mónica Quiroga

    Published 2013-01-01
    “…All catalysts were characterized by temperature programmed reduction, X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. TPR and XPS suggest that the metal in all catalysts is reduced after the pretreatment with H2 at 673 K. …”
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