Search alternatives:
spectral » special (Expand Search)
Showing 301 - 320 results of 431 for search 'spectral composition (method OR methods)', query time: 0.18s Refine Results
  1. 301

    The use of Remote Sensing Technology in geological Investigation and mineral Detection in El Azraq-Jordan by Samih Al-Rawashdeh, Bassam Saleh, Mufeed Hamzah

    Published 2006-10-01
    “…Finally, the hyper spectral technique was used for detecting the different minerals in the study area based on the spectral library of minerals.…”
    Get full text
    Article
  2. 302

    Liquid-phase oxidation of 2-chlorotoluene with ozone to 2-chlorobenzoic acid – an intermediate for diclofenac sodium production by A. S. Bushuiev, A. H. Halstian, V. V. Kotova

    Published 2020-11-01
    “…Ozone concentration at the reactor inlet and outlet was determined by the absorption spectrophotometric method in the range of 254–290 nm on a SF-46 spectrophotometer designed to measure the transmission coefficients of liquid and solid transparent substances in the spectral range from 190 nm to 1100 nm. …”
    Get full text
    Article
  3. 303

    Nutrient Content Prediction and Geographical Origin Identification of Bananas by Combining Hyperspectral Imaging with Chemometrics by Honghui Xiao, Chunlin Li, Mingyue Wang, Zhibo Huan, Hanyi Mei, Jing Nie, Karyne M. Rogers, Zhen Wu, Yuwei Yuan

    Published 2024-11-01
    “…Chinese domestic and imported bananas were classified with a prediction accuracy of 95.83% using partial least squares-discriminant analysis (PLS-DA) and an RF method that screened the spectral variables after a second pretreatment. …”
    Get full text
    Article
  4. 304

    Hyperspectral Target Detection Based on Macro–Micro Spectrum Contrastive Learning by Jiacheng Tian, Dunbin Shen, Wenfeng Kong, Min Li, Hongyu Wang, Xiaorui Ma

    Published 2025-01-01
    “…Depending on single target example under the influence of spectral variation, deep learning-based hyperspectral target detection (HTD) methods are challenged by the problem of insufficient target knowledge. …”
    Get full text
    Article
  5. 305

    Detection of microplastics stress on rice seedling by visible/near-infrared hyperspectral imaging and synchrotron radiation Fourier transform infrared microspectroscopy by Chaojie Wei, Hongxin Xie, Hongxin Xie, Hongxin Xie, Wei Wang, Yu-Feng Li, Yu-Feng Li, Yu-Feng Li, Xiaorong Wang, Ziwei Song, Fajun Chen

    Published 2025-07-01
    “…Meanwhile, SR-FTIR spectroscopy was used to investigate compositional changes in both leaf lamina and veins, and two-dimensional correlation spectroscopy (2DCOS) was employed to reveal the sequential interactions among molecular components.DiscussionIn conclusion, the combination of spectral technology and deep learning to capture the physiological and biochemical reactions of leaves could provide a rapid and interpretable method for detecting rice seedlings under MPs stress. …”
    Get full text
    Article
  6. 306

    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. …”
    Get full text
    Article
  7. 307

    Homo- and Heteroligand Nickel(II) Complexes with Benzoic and para-Methoxybenzoic Acid Hydrazides and L-Histidine by N.V. Troshanin, А.А. Razryvina, E.M. Gilyazetdinov, T.I. Bychkova, V.G. Shtyrlin

    Published 2017-03-01
    “…Dissociation constants of ligands, as well as composition, formation constants, and spectral parameters of homo- and heteroligand complexes have been determined. …”
    Get full text
    Article
  8. 308

    Analytical model of a dynamic system «pulse-width converter – DC motor with independent excitation» by Alexander S. Glazyrin, Evgeniy I. Popov, Vladimir A. Kopyrin, Sergey N. Kladiev

    Published 2023-12-01
    “…The proposed analytical model is recommended for investigation of dynamic modes of DC motors with independent excitation and allows one to analytically apply methods of automatic control theory to a dynamic system, as well as obtain complete information about the spectral composition of state variables.…”
    Get full text
    Article
  9. 309

    Synthesis, physical-chemical properties, antimicrobial and antifungal activity of some 2-(2-((5-(adamantane-1-yl)-4-R-1,2,4-triazole-3-yl)thio)acetyl)-N-R1–hydrazine-carbothioamide... by V. M. Odyntsova, A. M. Kamyshny, N. N. Polischuk

    Published 2017-12-01
    “…The melting temperature was determined by an open capillary method on the Opti Melt MPA 100. The elemental composition of the synthesized compounds was determined on the universal analyzer Elementar Vario L cube (CHNS) (standard – sulfanilamide). 1H NMR spectra were recorded on a spectrometer Varian Mercury VX-200 (1H, 200 MHz) in dimethylsulfoxide-d6solvent (tetramethylsilane - internal standard) and are decoded using ADVASP(tm)Analyzer program (Umatek International Inc.). …”
    Get full text
    Article
  10. 310

    Machine Learning to Retrieve Gap-Free Land Surface Temperature from Infrared Atmospheric Sounding Interferometer Observations by Fabio Della Rocca, Pamela Pasquariello, Guido Masiello, Carmine Serio, Italia De Feis

    Published 2025-02-01
    “…Thanks to its high spectral resolution, the Infrared Atmospheric Sounding Interferometer (IASI) instrument onboard Metop polar-orbiting satellites is the only sensor that can simultaneously retrieve LST, the emissivity spectrum, and atmospheric composition. …”
    Get full text
    Article
  11. 311

    The Efficiency of Automated Control Microprocessor Systems for LED Irradiation Installations by N. P. Kondratieva, R. I. Korepanov, I. R. Ilyasov, R. G. Bolshin, M. G. Krasnolutskaya, Ye. N. Somova, M. G. Markova

    Published 2018-07-01
    “…(Results and discussion) it has been shown that a LED irradiator with a changing spectral composition, as compared to a luminescent irradiator, at the stage of rooting of grape microsprouts contributes to a significant increase in the leaf surface area of microplants at 100 percent rooting of sprouts. …”
    Get full text
    Article
  12. 312

    A BOX-YOLOv8 framework for automated hyperspectral core analysis by Hongyan Zhu, Anjie Li, Chengzhi Lin, Shuai Qin, Junhao Xie, Jackey J.K. Chai, Russell Rogers, Jun-Li Xu

    Published 2025-06-01
    “…Furthermore, the framework facilitates detailed spectral analyses, including mineral mapping and spectral library matching, advancing soil-related analysis by providing insights into composition and structure. …”
    Get full text
    Article
  13. 313

    Study of flavonoids and phenolic acids in green tea leaves by O. Yu. Maslov, S. V. Kolisnyk, M. A. Komisarenko, E. Yu. Akhmedov, S. M. Poluian, Z. V. Shovkova

    Published 2021-12-01
    “…Material and methods. The object of the study was green tea leaves, which were collected in Anhui Province, China. …”
    Get full text
    Article
  14. 314

    Application of Raman Spectroscopy in Non-Invasive Analysis of the Gut Microbiota and Its Impact on Gastrointestinal Health by Patrycja Krynicka, George Koulaouzidis, Karolina Skonieczna-Żydecka, Wojciech Marlicz, Anastasios Koulaouzidis

    Published 2025-01-01
    “…Conventional microbiota analysis methods, such as next-generation sequencing (NGS) and nuclear magnetic resonance (NMR), provide valuable insights but are often expensive, time-consuming, and destructive. …”
    Get full text
    Article
  15. 315

    Design Multilayer Antireflection Coatings for Terrestrial Solar Cells by Feng Zhan, Zhipeng Li, Xiaoming Shen, Huan He, Jianmin Zeng

    Published 2014-01-01
    “…By multidimensional matrix data simulation, two methods were employed to measure the composite reflection of a SiO2/ZnS double-layer ARC within the spectral ranges of 300–870 nm (dual junction) and 300–1850 nm (triple junction) under AM1.5 solar radiation. …”
    Get full text
    Article
  16. 316

    Soil Organic Matter (SOM) Mapping in Subtropical Coastal Mountainous Areas Using Multi-Temporal Remote Sensing and the FOI-XGB Model by Hao Zhang, Xiaomei Li, Jinming Sha, Jiangning Ouyang, Zhipeng Fan

    Published 2025-07-01
    “…The framework employs two novel image-processing strategies: the Maximum Annual Bare-Soil Composite (MABSC) method to extract background spectral information and the Multi-temporal Feature Optimization Composite (MFOC) method to capture seasonal and environmental dynamics. …”
    Get full text
    Article
  17. 317

    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 study applies proton-nuclear magnetic resonance (<sup>1</sup>H-NMR) spectroscopy combined with chemometric analysis as a non-destructive, untargeted approach to differentiate EVOOs based on cultivation method (organic vs. conventional) and variety (<i>Hojiblanca</i> vs. …”
    Get full text
    Article
  18. 318

    EXPERIENCE OF USING ELECTRICAL TOMOGRAPHY, RADON SURVEY AND MICROSEISMIC SOUNDING IN SEARCH FOR PIPES CONTROLLED BY FAULT ZONES by K. Zh. Seminsky, S. A. Bornyakov, A. A. Bobrov, A. N. Shagun

    Published 2020-06-01
    “…The complex of geophysical methods was successfully applied in the Alakit-Markha kimberlite field of the Yakutsk diamondiferous province. …”
    Get full text
    Article
  19. 319

    Wavelet analysis of geomagnetically induced currents during the strong geomagnetic storms by Aksenovich Tatyana, Bilin Vladislav, Sakharov Yaroslav, Selivanov Vasiliy

    Published 2022-12-01
    “…In order to analyze the currents a wavelet transform was chosen, since this method allows to define not only the frequency composition but also changes in spectral characteristics over time, which is significant in the study of GIC. …”
    Get full text
    Article
  20. 320

    Synthesis and structure of new 4-amino-5-(2-R1-phenyl)-1,2,4-triazole-3-thiol alkilderivatives by Ye. S. Pruglo

    Published 2017-08-01
    “…The purpose of these studies is the synthesis, establishment of physical-chemical parameters of new 4-amino-5-(2-R1-phenyl)-1,2,4-triazole-3-thiol alkylderivatives. Materials and methods. The studying of physical and chemical properties of compounds was made in accordance with the methods described in the State Pharmacopoeia of Ukraine 2.0. …”
    Get full text
    Article