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Showing 241 - 260 results of 431 for search 'spectral composition method', query time: 0.11s Refine Results
  1. 241

    In situ high-temperature Raman spectroscopy for online EAF slag analysis by Bohong Zhang, Hanok Tekle, Ronald J. O'Malley, Jeffrey D. Smith, Farhan Mumtaz, Jie Huang

    Published 2025-09-01
    “…The results demonstrate agreement between Raman spectral ratios and bulk slag chemistry, validating the method's capability to track compositional and structural changes under molten temperature. …”
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    Article
  2. 242

    Chromatographic determination of volatile compounds of Achillea micranthoides Klok. et Krytzka by I. F. Duyun, S. V. Panchenko

    Published 2024-02-01
    “…The purpose of the work is to study the volatile compounds of the yarrow extract (Achillea micrantoides Klok. et Krytzka) and to establish their component composition. Materials and methods. The Thin-Layer Chromatography (TLC) method and Gas Chromatography-Mass Spectrometry (GC/MS) on an Agilent Technology 7890 B chromatograph were employed to determine the component composition of volatile compounds in Achillea micranthoides Klok. et Krytzka. …”
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  3. 243

    IN VITRO RESPONSE OF COTINUS COGGYGRIA SCOP. TO THE SPETRAL RADIATION AND LEDS INTENSITY by Olga O. Zholobova, Irina V. Mogilevskaya

    Published 2024-10-01
    “…Choosing the best photomorphogenesis parameters in vitro on a hormone-free medium for C. coggygria as a perspective plant species for commercial uses. Materials and methods. The effect of 15 lighting options, namely 6 ratios of red (R), blue (B), and green (G) spectra, on the composition of LEDs on C. coggygria explants in vitro by methods used in microclonal propagation was studied. …”
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    Article
  4. 244

    TECHNIQUES OF EVALUATION OF HEMOGLOBIN OXYGEN SATURATION IN CLINICAL OPHTHALMOLOGY by S. Yu. Petrov, A. A. Antonov, I. A. Novikov, T. A. Savelieva

    Published 2017-02-01
    “…This technique is based on the assessment of light absorption by blood depending on hemoglobin saturation with oxygen by analyzing spectral composition of light diffusively reflected from the retina. …”
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    Article
  5. 245

    Characterization and Differentiation of <i>Candida auris</i> on Dixon’s Agar Using Raman Spectroscopy by Chrysoula Petrokilidou, Eleftherios Pavlou, Aristea Velegraki, Anna Simou, Ioanna Marsellou, Grigorios Filis, Ioannis D. Bassukas, Georgios Gaitanis, Nikolaos Kourkoumelis

    Published 2024-11-01
    “…The observed inter-individual variability within <i>C. auris</i>, coupled with the spectral overlap between <i>C. auris</i> subgroups and other <i>Candida</i> species, highlights a major challenge in differentiating closely related fungi due to their similar molecular composition. …”
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    Article
  6. 246

    Identification of iceberg-forming ice quakes from seismic and infrasound data by Yu. A. Vinogradov, A. V. Fedorov, S. V. Baranov, V. E. Asming, I. S. Fedorov

    Published 2021-05-01
    “…Results of the experiment showed that the calving events that produce floating icebergs generate seismic and infrasonic signals of a special spectral composition and are characterized by the presence of pronounced bands in the spectral-time representation. …”
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    Article
  7. 247

    Research of the polyethylene packaging layer structure change in contact with a food product at exposure to ultraviolet radiation by O. B. Fedotova, N. S. Pryanichnikova

    Published 2021-04-01
    “…Using spectral methods of analysis, researches have been carried out on changes in the polyethylene layers structure in the film’s composition, multilayer films and combined packaging materials when exposed to pulsed ultraviolet radiation in a wide spectral range (irradiation with a pulsed xenon lamp). …”
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  8. 248
  9. 249

    Enhancing wheat flour origin traceability by using laser-induced breakdown spectroscopy and Raman spectroscopy by Minghui Gu, Chao Liu, Hansong Huang, Xin Zhang, Jiguo Li, Qingbin Jiao, Liang Xu, Mingyu Yang, Xin Tan

    Published 2025-07-01
    “…First, a hybrid feature selection method, termed ANOVA-Sine Cosine Algorithm (AVSCA), was developed by integrating analysis of variance (ANOVA) with the Sine Cosine Algorithm (SCA) to extract spectral fingerprint information of wheat flour. …”
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    Article
  10. 250

    High-Pressure Monosulfide Solid Solution Fe<sub>x</sub>Ni<sub>1−x</sub>S Phases: X-Ray Diffraction Analysis and Raman Spectroscopy by Anna V. Spivak, Ninel Yu. Sharapova, Tatiana V. Setkova, Andrey V. Bobrov, Vitaliy I. Korepanov, Anastasia V. Iskrina, Egor S. Zakharchenko, Mikhail V. Voronin, Natalia A. Drozhzhina

    Published 2024-11-01
    “…The structural and spectroscopic studies show linear dependencies of unit cell parameters and spectral components on composition and confirm the existence of a series of monosulfide solid solution Fe<sub>x</sub>Ni<sub>1−x</sub>S.…”
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  11. 251

    Identification of Chicken Bone Paste in Starch-Based Sausages Using Laser-Induced Breakdown Spectroscopy by Haoyu Li, Li Shen, Xiang Han, Yu Liu, Yutong Wang

    Published 2025-07-01
    “…Through processing methods such as normalization with reference spectral lines, selection of the signal of the second laser pulse at the same position, and electron temperature correction, the determination coefficients (R<sup>2</sup>) of each element’s spectral lines have significantly improved. …”
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  12. 252

    Surface Clay and Mineral Exploration Using Hyperspectral Imaging: Advanced Techniques for Geospatial Analysis by S. Raut, N. Andure, A. Kadam, A. Dongare, A. Fulari, G. M. Sayyad, S. B. Sayyad, S. K. Shaikh, S. Sawant

    Published 2025-07-01
    “…HSI, leveraging data from the Hyperion sensor, offers a fine-resolution remote sensing method capable of discriminating minerals through their unique spectral reflectance profiles. …”
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    Article
  13. 253

    Determination of Heating Value of Estonian Oil Shale by Laser-Induced Breakdown Spectroscopy by M. Aints, P. Paris, M. Laan, K. Piip, H. Riisalu, I. Tufail

    Published 2018-01-01
    “…The study is the first where the oil shale heating value is determined on the basis of LIBS spectra. The method for selecting the optimal number of spectral lines for ordinary multivariate least squares regression model is presented. …”
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  14. 254

    Mass-spectrometry via oscillatory motion in deep pulsed optical lattices by Alexandros Gerakis, Mikhail N. Shneider, Peter F. Barker

    Published 2024-11-01
    “…This non-resonant method is analogous to conventional Raman scattering, except that the observed spectral features relate to the oscillatory center-of-mass motion of each species within the lattice, determined uniquely by their respective polarizability-to-mass ratio. …”
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  15. 255

    Features of power consumption of electrical installations with a DC link by A. V. Petrov, V. E. Martusenko, K. K. Fidiyov, D. I. Sidel'nikov

    Published 2024-06-01
    “…Study of dependence of the level of non-sinusoidality of currents consumed by the rectification circuit when feeding a linear load on the degree of voltage ripple smoothing at the rectifier output.Materials and methods. The study is based on the analysis of the spectral composition of the load currents with a rectifier bridge at different capacitance of the smoothing capacitor at the output of the rectifier.Results and discussion. …”
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  16. 256

    Interpretation of ATR-FTIR spectra of dental adhesives throughout simultaneous polymerization and solvent loss. by Arwa Almusa, António H S Delgado, Anne Margaret Young

    Published 2025-01-01
    “…The FTIR techniques developed could monitor process kinetics and demonstrate the large, highly significant effects of drying method on final polymerized dental adhesive composition and polymerization level.…”
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    Article
  17. 257

    Fluorescence spectroscopy as a novel tool in hematological diagnostics by Nugzar Gomidze, Lali Kalandadze, Miranda Khajishvili, Omar Nakashidze, Izolda Jabnidze, Davit Jakobia, Kakha Makharadze

    Published 2025-06-01
    “…The findings demonstrate that fluorescence spectroscopy provides complementary diagnostic insights, detecting subtle physiological variations in blood composition that conventional methods might overlook. …”
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    Article
  18. 258

    NMR as Used in the Russian and Foreign Pharmacopoeias for Quality Control of Medicinal Products by S. V. Moiseev, N. E. Kuz’mina, A. I. Luttseva

    Published 2022-04-01
    “…The NMR method should be included in the list of absolute methods used for determination of purity of primary chemical reference substances during certification.…”
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    Article
  19. 259

    Study of Non-Isothermal Decomposition and Kinetic Analysis of 2,4-Dihydroxybenzoic Acid- Melamine-Formaldehyde Copolymer by S. S. Butoliya, W. B. Gurnule, A. B. Zade

    Published 2010-01-01
    “…Freeman Carroll and Sharp Wentworth methods have been applied for the calculation of kinetic parameters while the data from Freeman Carroll method have been used to determine various thermodynamic parameters such as order of reaction, energy of activation, frequency factor, entropy change, free energy change and apparent entropy change. …”
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  20. 260

    Copolymers of N-(4-bromophenyl)-2-methacrylamide with 2-hydroxyethyl methacrylate

    Published 2007-09-01
    “…Monomer reactivity ratios for BrPMAAm (M1)-HEMA (M2) pair were determined by the application of conventional linearization methods such as Fineman-Ross (F-R), Kelen-Tüdõs (KT) and Extended Kelen-Tüdõs (EKT) and a nonlinear error invariable model method using a computer program RREVM. …”
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    Article