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DEVELOPMENT OF PERSPECTIVE ORGANO-HYBRID COMPOSITION BASED ON MODIFIED POLYACRYLONITRILE DURING REPAIR AND INSULATION OPERATIONS IN WELLS
Published 2022-07-01“…A complex of rheological studies was carried out to determine the structural and mechanical properties of the composition with hydrochloric acid. Spectral studies were performed to clarify the mechanism of gel formation of a new organo-hybrid composition. …”
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122
Study of the structure and development of the set of reference materials of composition and structure of heat resisting nickel and intermetallic alloys
Published 2017-05-01“…Purpose of the work: Development of reference material sets of heat resisting nickel and intermetallic alloy composition and structure. Research methods: To address the measurement problem of control of structural and geometrical characteristics of single-crystal heat resisting and intermetallic alloys by analytical microscopy and X-ray diffraction analysis the research was carried out using certified measurement techniques on facilities, entered in the Register of Measurement Means of the Russian Federation. …”
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123
Constraining Ongoing Volcanic Outgassing Rates and Interior Compositions of Extrasolar Planets with Mass Measurements of Plasma Tori
Published 2025-01-01“…We present a novel method of constraining volcanic activity on extrasolar terrestrial worlds via characterization of circumstellar plasma tori. …”
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124
Application of impedance spectroscopy method for analysis of benzanol fuels
Published 2015-06-01“…The authors have developed a method for express control of three component «petrol – alcohol – water» fuel mixtures based on the spectral impedance investigation of benzanol mixture in the frequency range of 500 Hz – 10 kHz. …”
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125
Application of Satellite Image Processing Methods for Hydrocarbon Field Search
Published 2019-12-01“…The object of the study is software methods of the Earth surface images processing obtained from the VRSS-2 satellite to determine the spectral composition of the vegetation cover to detect the presence of carotenoids during prolonged exposure to hydrocarbons.The photosynthetic pigments of higher plants (chlorophylls, carotenoids and phytobiliproteins) were analyzed. …”
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126
Comparative Characteristics of Sugar Determination by Different Methods in Leaves of Nettle
Published 2020-05-01“…The obtained results of quantitative determination of the amount of free and bound simple sugars in the studied PRM are consistent with the determination data by the picrine pharmacopoeial method.Conclusion. In general, complete information, depending on the goals of the analysis, on the composition and quantitative content of simple and related sugars in the polysaccharide complex of plant objects can only be obtained by combining spectral methods with CE or TLC.…”
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127
ELEMENTAL COMPOSITION OF ROSEMARY SHOOTS (ROSMARINUS OFFICINALIS L.), INTRODUCED IN THE BOTANICAL GARDEN OF PYATIGORSK MEDICAL-PHARMACEUTICAL INSTITUTE
Published 2018-01-01“…Nowadays studying plant objects in the framework of environmental monitoring to improve the quality of herbal remedies is a very important area of research.The aim of the work is to determine the elemental composition and assessment of environmental cleanliness of rosemary shoots (Rosmarinus offi cinalis L.), introduced in Botanical garden of Pyatigorsk medical-pharmaceutical Institute (PMPI), Pyatigorsk (Russia).Materials and methods. …”
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128
Quantitative photoacoustic imaging using known chromophores as fluence marker
Published 2025-02-01“…Additionally, we show that the fluence marker method enhances conventional optical inversion techniques, specifically (i) a straightforward iterative approach and (ii) a gradient-based method. …”
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Ensemble deep learning-enabled single-shot composite structured illumination microscopy (eDL-cSIM)
Published 2025-05-01“…In this work, we propose a single-shot composite structured illumination microscopy method using ensemble deep learning (eDL-cSIM). …”
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131
Near infrared spectroscopy analysis as a screening tool to classify milk from bovine subclinical mastitis and promote pathogen-based therapy
Published 2025-06-01“…These preliminary data highlight the usefulness of spectral information obtained from NIRS analysis of milk. …”
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132
Optical properties, inclusions, and chemical composition of blue corundum from the Stazh-2 deposit, South-Western Pamir
Published 2024-08-01“…During its study at the end of the last century, no mineralogical studies of blue corundum were conducted using precision methods, such as IR, Raman and absorption spectra, DiamindView luminescence, in order to establish patterns in color distribution, solid and gas-liquid inclusions, deformations and chemical composition. …”
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133
Compositional engineering of phase-stable and highly efficient deep-red emitting phosphor for advanced plant lighting systems
Published 2024-12-01“…Besides, the excitation and emission peaks shifted to 440 nm and 675 nm, respectively, aligning precisely with the specific spectral absorption requirements of plant phytochromes. …”
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Mapping and discrimination of the mineralization potential in the Bonako area (Central Cameroon Domain): Insights from Landsat 9 OLI data, GIS fuzzy modeling techniques and field o...
Published 2025-02-01“…In addition, image processing methods such as band ratios (BR) and selective principal component analysis (Crosta-PCA) were applied to target and delineate hydrothermally altered and corresponding minerals and the spectral angle mapper (SAM) classification algorithm was used to classify the discriminated lithological units within the study area. …”
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136
Lanthanide bioadsorption by the extremophile Exiguobacterium sp.: utilizing microbial extracellular polysaccharides for high-value element recovery
Published 2025-07-01“…EPS production increased slightly in the presence of metals, with compositional variations dependent on extraction method and pH. …”
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137
Classification and spectrum optimization method of grease based on infrared spectrum
Published 2023-12-01“…The results show that this machine learning method can effectively eliminate the interference fringes in the IR spectrum, and complete the feature selection and dimensionality reduction of the high-dimensional spectral data. …”
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138
Geoacoustic Digital Model for the Sea of Japan Shelf (Peter the Great Bay)
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139
Advances in machine learning for the detection and characterization of microplastics in the environment
Published 2025-05-01“…Extending these capabilities further, hyperspectral imaging combines spatial and spectral data to generate comprehensive chemical maps, enabling the simultaneous assessment of polymer composition and distribution. …”
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140
Synthesis of Electronic Frequency Tuning Units for Narrowband Ultra-Low Noise Oscillators with Surface Acoustic Waves Resonators
Published 2024-03-01“…Modern radio engineering systems impose strict requirements on the stability of the frequency of microwave oscillation sources (microwave generators) included in their composition. However, microwave oscillators (on dielectric resonators or resonators on surface acoustic waves), despite the low levels of power spectral density of frequency fluctuations of the generated signals, fail to exhibit the frequency stability required for most precision applications (phase noise meters, aircraft radars, ultra-low-noise frequency synthesizers). …”
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