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Showing 261 - 280 results of 431 for search 'spectral composition (method OR methods)', query time: 0.15s Refine Results
  1. 261

    Estimation of possibility of dentin materials use for bone plasty by M. A. Zybin, E. V. Timchenko, L. T. Volova, P. E. Timchenko, O. O. Frolov, N. A. Maksimenko, G. G. Dolgushov

    Published 2020-03-01
    “…The research was made using the Raman spectroscopy method.Results. It is shown that the researched biological subjects have similar spectral composition. …”
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    Article
  2. 262

    Application of Remote Sensing Techniques in Enhancement, Detection, and Slicing of Koopan Lateralized Ultrabasics (South of Bavanat, Fars Province) by Maryam Zurmand, Ahmad Ahmadi Khalaji, Kamal Noori Khankahdani, Zahra Tahmasbi

    Published 2022-12-01
    “…Finally, different methods of supervised classification, such as Spectral Angle Mapper, Spectral Information Divergence, and Support Vector Machine, were reviewed. …”
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    Article
  3. 263

    Petrochemistry and mineralogy of pumice from the Sarychev Peak Volcano, Matua Island, Central Kuril Island by V. M. Okrugin, E. D. Skilskaia, S. V. Moskaleva

    Published 2022-10-01
    “…The main research methods included an X-ray fluorescence spectral analysis to determine the content of petrogenic, rare and trace elements, as well as an electron-probe microanalysis to study variations in the chemical composition of mineral inclusions of pumice.Results and conclusion. …”
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    Article
  4. 264

    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. 265

    Study on Discriminant Analysis of Photosensitive Ink by Xingyu Duan, Fushi Chen, Xingzhou Han, Da Qin

    Published 2025-04-01
    “…This result underscores the method’s robustness in detecting subtle spectral variations arising from compositional differences among inks. …”
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    Article
  6. 266

    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. 267

    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
  8. 268

    Do leaf traits shape herbivory in tropical montane rainforests? A multispecies approach by Jana E. Schön, Raya Keuth, Jürgen Homeier, Oliver Limberger, Jörg Bendix, Nina Farwig, Roland Brandl

    Published 2024-10-01
    “…Traits can either be measured using conventional lab methods or recently developed spectral sensing techniques. …”
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    Article
  9. 269

    Some aspects of synthesis of new 2-((5-furan-2-yl, 2-metylfuran-3-yl)-4-amino-1,2,4-triazole-3-ylthio)acetic acid esters by D. M. Danilchenko

    Published 2016-12-01
    “…The structure of synthesized substances was set using holistic method to physical and chemical analysis. The results of elemental and spectral analysis has confirmed the molecular structure of the synthesized 2-((5-furan-2-yl, 2-metylfuran-3-yl)-4-amino-1,2,4-triazole-3-ylthio)acetic acid esters, and their individuality was proven chromatographically. …”
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    Article
  10. 270

    Complexes of Cu(II) Ions and Noncovalent Interactions in Systems with L-Aspartic Acid and Cytidine-5'-Monophosphate by Romualda Bregier-Jarzebowska, Anna Gasowska, Lechosław Lomozik

    Published 2008-01-01
    “…Interactions between aspartic acid (Asp) and cytidine-5-monophosphate (CMP) in metal-free systems as well as the coordination of Cu(II) ions with the above ligands were studied. The composition and overall stability constants of the species formed in those systems were determined by the potentiometric method, and the interaction centres in the ligands were identified by the spectral methods UV-Vis, EPR, NMR, and IR. …”
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    Article
  11. 271

    Visible and Near-Infrared Reflectance Spectroscopy for Investigating Soil Mineralogy: A Review by Qian Fang, Hanlie Hong, Lulu Zhao, Stephanie Kukolich, Ke Yin, Chaowen Wang

    Published 2018-01-01
    “…We then review common methods to process soil VNIR spectra and summary spectral features of soil minerals with particular attention to those <2 μm fractions. …”
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    Article
  12. 272

    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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    Article
  13. 273

    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
  14. 274

    Synthesis, physical-chemical properties of 2-((5-(adamantan-1-yl)-4-R-4H-1,2,4-triazole-3-yl)thio)acetic acid esters by V. M. Odyntsova

    Published 2017-04-01
    “…The aim of this work is the synthesis of new esters of 2-((5-(adamantan-1-yl)-4-R-4H-1,2,4-triazole-3-yl)thio)acetic acids and the establishment of their physical-chemical properties. Materials and methods. Melting point was determined by open capillary method on the device OptiMelt MPA100. …”
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    Article
  15. 275

    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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    Article
  16. 276

    Noise properties of preamplifier to be used with LN<sub>2</sub>-cooled HgCdTe photodetector by Dmitry V. Kazantsev, Elena A. Kazantseva

    Published 2025-02-01
    “…The aim of this work is to study the noise properties of the electronic unit developed for joint operation with a liquid nitrogen cooled MCT-photodetector.Methods. An analog input-output digital signal processor card P25M (Innovative, Inc., USA) was used to measure and accumulate the noise spectra of the signal in the frequency range 0–1 MHz. …”
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    Article
  17. 277

    Quantitatively Detecting Camellia Oil Products Adulterated by Rice Bran Oil and Corn Oil Using Raman Spectroscopy: A Comparative Study Between Models Utilizing Machine Learning Alg... by Henan Liu, Sijia Ma, Ni Liang, Xin Wang

    Published 2024-12-01
    “…In this study, rice bran oil and corn oil, whose Raman spectra both hold great similarities with camellia oil, are blended with camellia oil, and the concentration of each composition is predicted by models with varying feature extraction methods and regression algorithms. …”
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    Article
  18. 278

    Starch‐capped sulphur nanoparticles synthesised from bulk powder sulphur and their anti‐phytopathogenic activity against Clavibacter sepedonicus by Marina Lesnichaya, Anastasiya Gazizova, Alla Perfileva, Olga Nozhkina, Irina Graskova, Boris Sukhov

    Published 2021-09-01
    “…Using a set of modern spectral and microscopic methods (XRD, optical spectroscopy, DLS, TEM), the phase state, elemental composition of the nanocomposites and their nanomorphological characteristics have been investigated. …”
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    Article
  19. 279

    Problems in measurement of integrated sensitivity of photodetectors by I. V. Doktorovich, V. N. Hodovaniouk, V. G. Yuryev, V. G. Zhytaryuk

    Published 2015-06-01
    “…The research work deals with the problems in measurement of integral sensitivity of photodetectors, which arise while using them in standard methods of visible and infrared radiation of the sources of radiation with different spectral composition of the flow. …”
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    Article
  20. 280

    Analysis of Illumination Generated by LED Matrices Distribution by P. S. Bogdan, E. G. Zaytseva, P. O. Baranov, A. I. Stepanenko

    Published 2022-04-01
    “…The aim of this work was to create a methodology for calculating the illumination created by LED matrices which does not require the use of specialized software products and is adapted to the possibility of varying the parameters of LEDs and illuminated rooms.The urgency of creating a room lighting system that simulates the conditions of natural lighting taking into account the need to change its spectral composition in time, in space taking into account the physical and psychological state of a person is substantiated. …”
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    Article