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Showing 301 - 320 results of 431 for search 'spectral composition method', query time: 0.11s Refine Results
  1. 301

    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. …”
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    Article
  2. 302

    Spectroscopic, AC conductivity and dielectric properties of Nd2O3 doped lithium silicophosphate glass by Oumr Adnan Osra, Kholood Alkhamis, Fatmah Alkhatib, Mohammed T. Alotaibi, Marwah A. Alsharif, Adel M. Binyaseen, Nashwa M. El-Metwaly, Fawaz A. Saad

    Published 2025-08-01
    “…Abstract Basic lithium silicophosphate glasses of composition (P2O5 50%- SiO2 30%- Li2O 20%) and those doped with up to 6.0 wt % Nd2O3 are prepared, and we have been studying the FTIR spectral to illustrate the structural properties. …”
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  3. 303

    New Complex of Salinomycin with Hg(II)—Synthesis and Characterization by Juliana Ivanova, Irena Pashkunova-Martic, Johannes Theiner, Nikola Burdzhiev, Peter Dorkov, Ivo Grabchev

    Published 2025-07-01
    “…Based on the results from the spectral analyses, the most probable structure of the complex was proposed.…”
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    Article
  4. 304

    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. …”
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    Article
  5. 305

    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. …”
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    Article
  6. 306

    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. …”
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    Article
  7. 307

    Analytical models of movement of wires of air high-voltage power transmission lines by D. A. Yaroslavsky

    Published 2022-08-01
    “…IT IS STRESSED that a complete picture of the state of an overhead line can be established by determining the spectral composition of the wire vibrations using mounted automated multi-parameter sensors with accelerometers as sensors. …”
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    Article
  8. 308

    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. …”
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    Article
  9. 309

    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. …”
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    Article
  10. 310

    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. …”
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  11. 311

    Application of satellite images and object-oriented processing in land use/land cover map extraction to model ecosystem services (case study: Lorestan province) by Zahra Asadolahi, Mostafa Keshtkar, Zia Badehian

    Published 2020-09-01
    “…Currently, remote sensing technology is one of the top techniques in land use/cover map extraction using both pixel-based and object-oriented methods. While the pixel-based method is based on the classification of numerical values of images, object-oriented image processing is more accurate in the classification process, due to the use of spectral information, texture, and content information, being widely used in all sectors including environmental sciences. …”
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    Article
  12. 312

    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.…”
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    Article
  13. 313

    Rapid <i>Salmonella</i> Serovar Classification Using AI-Enabled Hyperspectral Microscopy with Enhanced Data Preprocessing and Multimodal Fusion by MeiLi Papa, Siddhartha Bhattacharya, Bosoon Park, Jiyoon Yi

    Published 2025-08-01
    “…This study presents a rapid, culture-independent method leveraging artificial intelligence (AI) to classify <i>Salmonella</i> serovars from rich hyperspectral microscopy data. …”
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    Article
  14. 314

    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. …”
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  15. 315
  16. 316

    STRUCTURAL MODIFICATION OF NEW FORMATIONS IN CEMENT MATRIX USING CARBON NANOTUBE DISPERSIONS AND NANOSILICA by B. M. Khroustalev, S. N. Leonovich, G. I. Yakovlev, I. S. Polianskich, O. Lahayne, J. Eberhardsteiner, G. Skripkiunas, I. A. Pudov, E. A. Karpova

    Published 2017-03-01
    “…Complex nanodispersed systems with multi-walled carbon nanotubes and nanodispersed silica have a significant impact on the processes of hydration, hardening and strength gain of construction composites predetermining their durability. While using a scanning electron microscope with an attachment for X-ray microanalysis and a device for infrared spectral analysis investigations have shown that the main effect of the cement matrix modification in the case of adding complex nanodispersed systems is provided by direct influence of hydration processes with subsequent crystallization of new formations. …”
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  17. 317
  18. 318

    Solid Sr2Ti1-xMnxO4 (x = 0; 0,01; 0,025; 0,05; 0,1) solutions with K2NiF4 structure by T.I. Chupakhina, A.M. Uporova, O.I. Gyrdashova, L.Yu. Buldakova, Y.A. Deeva, I.V. Baklanova, M.Yu. Yanchenko

    Published 2024-12-01
    “…Formate complexes of the corresponding metals synthesized by an original method were used as precursors. The products of thermolysis of the obtained complexes with an organic ligand are isostructural single-phase samples, which crystallize as agglomerates with an average size of 1 μm. …”
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    Article
  19. 319

    Effect of Substrate Temperature on the Microstructural, Morphological, and Optical Properties of Electrosprayed ZnO Thin Films by Georgi Marinov, Velichka Strijkova, Marina Vasileva, Violeta Madjarova, Nikola Malinowski, Tsvetanka Babeva

    Published 2018-01-01
    “…Polycrystalline ZnO thin films were prepared on silicon substrates using electrospray method with vertical setup. Water and ethanol were used as solvents for zinc acetate dehydrate and no postdeposition annealing was required for formation of ZnO. …”
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    Article
  20. 320

    Assessment of plant diversity index in degraded desert grassland using UAV hyperspectral multimodal data and Encoder-CNN by Zhaohui Tang, Chuanzhong Xuan, Tao Zhang, Xinyu Gao, Suhui Liu, Mengqin Zhang

    Published 2025-08-01
    “…The use of multimodal data combining spatial spectral features with index features, combined with the Encode-CNN model, can provide the most accurate information on community composition. …”
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    Article