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Showing 261 - 280 results of 431 for search 'spectral composition method', query time: 0.11s Refine Results
  1. 261

    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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  2. 262

    Reactivity of cardiorespiratory system in bronchial asthma patients according to the tests with respiratory maneuvers performance by O. P. Romanchuk, V. I. Velychko, Ya. I. Bazhora

    Published 2019-07-01
    “…Regulatory influences were determined based on the spectral analysis of heart rate (HRV) and respiration (RV) variability. …”
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    Article
  3. 263

    Advancing non-destructive sex determination on human dental enamel using Raman spectroscopy by Raphael Hug, Anna E. Wood, Frank J. Rühli, Patrick E. Eppenberger

    Published 2025-05-01
    “…This study investigates whether Raman spectroscopy of intact human dental enamel can be used as a non-destructive method for sex estimation. Orthogonal partial least squares discriminant analysis (OPLS-DA) and logistic regression identified sex-specific spectral characteristics in 88 human teeth from 47 modern individuals (26 females, 21 males). …”
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  4. 264

    Development of Mid-Infrared Spectroscopy (MIR) Diagnostic Model for Udder Health Status of Dairy Cattle by Xiaoli Ren, Chu Chu, Xiangnan Bao, Lei Yan, Xueli Bai, Haibo Lu, Changlei Liu, Zhen Zhang, Shujun Zhang

    Published 2025-07-01
    “…Three MIR spectral preprocessing methods, six modeling algorithms, and three different sets of MIR spectral data were employed in various combinations to develop several diagnostic models for mastitis of dairy cattle. …”
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    Article
  5. 265

    Automated protein turnover calculations from 15N partial metabolic labeling LC/MS shotgun proteomics data. by David Lyon, Maria Angeles Castillejo, Christiana Staudinger, Wolfram Weckwerth, Stefanie Wienkoop, Volker Egelhofer

    Published 2014-01-01
    “…Protein turnover is a well-controlled process in which polypeptides are constantly being degraded and subsequently replaced with newly synthesized copies. Extraction of composite spectral envelopes from complex LC/MS shotgun proteomics data can be a challenging task, due to the inherent complexity of biological samples. …”
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  6. 266

    Heteroligand copper(II), nickel(II), and cobalt(II) complexes with isonicotinic acid hydrazide and L-histidine by N.V. Troshanin, T.I. Bychkova

    Published 2021-03-01
    “…The compositions, formation constants, and spectral parameters of the heteroligand complexes with a metal/hydrazide/amino acid ratio of 1:1:1 were determined. …”
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    Article
  7. 267

    Photodegradation of Diquat in water under UV irradiation: Identification of transformation products and elucidation of photodegradation pathway by Fangyuan Wang, Bo Tao

    Published 2025-02-01
    “…In aquatic settings, photodegradation is a significant non-biodegradation method of pesticide degradation. In this investigation, the photodegradation of the herbicide Diquat in aqueous solution was examined under distinct conditions and concentrations. …”
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    Article
  8. 268

    Modification of Glass Waste and Use for Fractionation of Crude Oil by Hussein Hatem Meteab, Ammar Jamal Mohammed, Sirhan, M. M. Zeyad Khudhur

    Published 2024-12-01
    “…The modified glass waste was used to fractionate the crude oil into distinct components using the SARA (Saturate, Aromatic, Resin, and Asphaltene) analysis method. The chemical composition accuracy of the separation process was validated through spectral analysis, which highlighted the effectiveness of the modified glass waste as a stationary phase. …”
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    Article
  9. 269

    GEAR FAULT DIAGNOSIS BASED ON THE VMD AND MODULATION SPECTRUM INTENSITY DISTRIBUTION by ZHANG SuoFeng, WANG YanXue, HE ShuiLong, HU ChaoFan, JIANG ZhanSi

    Published 2019-01-01
    “…VMD has better band-pass filtering characteristic, which can non-recursively decomposition a real-valued multi-composition signal into a discrete number of quasi-orthogonal band-limited sub-signals with specific sparsity properties in the spectral. …”
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    Article
  10. 270

    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
  11. 271

    Synthesis, Characterization and Biological Activities of Cu(II), Co(II), Ni(II), Mn(II) and Fe(III) Complexes with Schiff Base Derived from 3-(4-Chlorophenoxymethyl)-4-amino-5-merc... by Vidyavati Reddy, Nirdosh Patil, Tukaram Reddy, S. D. Angadi

    Published 2008-01-01
    “…The complexes were characterized by elemental analysis, conductivity measurements, magnetic susceptibility data, electronic, IR, ESR and 1H NMR spectral data. On the basis spectroscopic studies, the Schiff base is monobasic bidentate ligand having the composition ML2(2H2O) Where M = Cu(II), Co(II), Ni(II) ,Mn(II), ML2(H2O)Cl Where M = Fe(III). …”
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  12. 272

    Atom Probe Tomography (APT) and Its Application in Ore Deposits by Peng TAO, Shiwen XIE, Tao LONG, Mingzhu MA, Xiaochao CHE

    Published 2023-10-01
    “…Compared with traditional geological analysis techniques, APT has unique technical advantages, which can be used to analyze the elemental composition of minerals <0.0007μm3 in volume[14], reveal the complexity of mineral composition at the nanoscale, and provide a new understanding of the geological evolution process.  …”
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    Article
  13. 273

    Potential use of saliva infrared spectra and machine learning for a minimally invasive screening test for congenital syphilis in infants by Deise Cristina Dal’Ongaro, Cicero Cena, Bruno Spolon Marangoni, Daniele A. Soares-Marangoni

    Published 2025-07-01
    “…This study aimed to explore the development of a method for the diagnosis of congenital syphilis using saliva FTIR spectra and machine learning algorithms in infants aged 0 to 12 months. …”
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    Article
  14. 274

    Urban Surface Water Mapping from VHR Images Based on Superpixel Segmentation and Target Detection by Qingwei Liu, Yugang Tian, Lihao Zhang, Bo Chen

    Published 2022-01-01
    “…Recently, very high resolution (VHR) images have shown considerable potential for urban compositions mapping. However, fewer spectral bands, shadows, and high spectral heterogeneity of VHR images hinder the application of traditional methods. …”
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    Article
  15. 275

    Advances in the Detection and Identification of Bacterial Biofilms Through NIR Spectroscopy by Cristina Allende-Prieto, Lucía Fernández, Pablo Rodríguez-Gonzálvez, Pilar García, Ana Rodríguez, Carmen Recondo, Beatriz Martínez

    Published 2025-03-01
    “…We developed a detailed methodology for data acquisition and processing that takes into consideration the biochemical composition of these biofilms. To improve the quality of the spectral data, SNV (Standard Normal Variate) and Savitzky–Golay filters were applied, which correct systematic variations and eliminate random noise, followed by an exploratory analysis that revealed significant spectral differences in the NIR range. …”
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    Article
  16. 276

    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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  17. 277

    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
    “…It was shown that the spectral noise density of the electronic components, reduced to the input of the device, is several times lower than the noise density of the photodetector used.…”
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  18. 278

    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
  19. 279

    ¹H-NMR Spectroscopy and Chemometric Fingerprinting for the Authentication of Organic Extra Virgin Olive Oils by Silvana M. Azcarate, Maria P. Segura-Borrego, Rocío Ríos-Reina, Raquel M. Callejón

    Published 2025-05-01
    “…This method provides a comprehensive and reproducible metabolic fingerprint, enabling differentiation based on both agronomic practices and genetic factors. …”
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    Article
  20. 280

    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