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A Study on the Filtering Method of Natural Gamma Energy Spectrum Logging Data for Low-Count Features
Published 2024-10-01“…The results show that the effect of Gaussian filter and convolution filter is relatively good for the natural gamma spectrum with low count and poor spectral shape, and the composite filter combining the two methods in this paper can accurately restore the accurate spectral shape. …”
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183
Research in the Development and Validation of the Method of Quantitative Determination of Flavonoids in the Common Sorrel Herba, Gathered in the Altai Territory
Published 2019-05-01“…The resulting solutions were investigated by the method of differential spectrophotometry. The spectral characteristics of the test and standard samples were compared. …”
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184
Calculation Method of Shale Oil Fluid Component Content Based on Nuclear Magnetic Resonance T2 Distribution
Published 2023-10-01“…Shale oil reservoirs, characterized by the complex occurrence state of fluid and complex mineral compositions, are difficult to accurately determine the fluid component content. …”
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QUASI-DISTRIBUTED FIBER-OPTIC RECIRCULATING SYSTEM FOR TEMPERATURE MEASUREMENT BASED ON WAVELENGTH-DIVISION MULTIPLEXING TECHNOLOGIES
Published 2017-06-01“…With the help of the developed mathematical model that takes into account the temperature dependence of the coefficient of linear expansion and Young’s modulus of the fiber, the spectral and temperature dependence of the refractive index, the chemical composition of the fibers, the type of metal coating system response function was calculated, which allows to evaluate the sensitivity and measurement accuracy. …”
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187
An eco-friendly chemometrics assisted UV spectrophotometric method for simultaneous determination of sofosbuvir, simeprevir and ledipasvir in pharmaceuticals
Published 2025-06-01“…Two multivariate approaches were compared: Concentration Residual Augmented Classical Least Squares (CRACLS) and Spectral Residual Augmented Classical Least Squares (SRACLS). …”
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Land cover changes in grassland landscapes: combining enhanced Landsat data composition, LandTrendr, and machine learning classification in google earth engine with MLP-ANN scenari...
Published 2024-12-01“…However, the classification of shrublands proved challenging due to their mixed composition and unique spatial patterns, resulting in lower accuracies. …”
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190
Heavy Metals in Glaciers and River Water of the Basin of the Bezengi Cherek River During Intense Graciation Degradation
Published 2022-10-01“…The determination of HM content in ice samples and river waters was carried out from 2003 to 2010 at the High Mountain Geophysical Institute by the method of emission spectral analysis. Sample analysis 2012–2021 were produced by the atomic absorption method on an MGA-915 spectrometer.Results and discussion. …”
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191
The influence of the reduction methods of the concrete hardening time on the parameters of the generated acoustic emission signal measured in plain and in high strength concretes
Published 2014-06-01“…Results of the Acoustic Emission (AE) measurements including: AE counts sum, averaged AE event power and averaged AE events spectral pattern are presented in dependence on the concrete mixture type and on the used thermal treatment method. …”
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192
Optical Emission Spectroscopy of Zinc Oxide Doped Nickel Oxide to Calculate Plasma Parameters Using the Boltzmann Plot Method
Published 2025-06-01“… The study used the optical emission spectroscopy method to present the effect of changing doping ratios and laser energy on plasma parameters. …”
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193
TECHNOLOGY OF CLEANING LOW-POTENTIAL ARTESIAN WATERS OF NORTH DAGESTAN FROM TOXIC COMPOUNDS
Published 2014-10-01“…Arsenic compounds and humic acids was found in the most studied waters in amounts far exceeding World Health Organization (WHO) limiting rate for drinking water by spectral analysis methods (AAS, SPM). The sorbent based on DEAE-cellulose modified with Fe3+ ions was prepared and tested by us for cleaning of the waters containing the arsenic compounds in an amount of more than 700 mcg/dm3 and humic acids in an amount approximately equal to 200 mg/dm3. …”
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194
The Moon as a Cosmic-Ray Spectrometer: Prospects for MeV Gamma-Ray Observations
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Satellite-Derived Bathymetry Using Sentinel-2 and Airborne Hyperspectral Data: A Deep Learning Approach with Adaptive Interpolation
Published 2025-07-01“…Two spectral input configurations were evaluated: the log-ratio of Bands 2 and 3, and raw RGB composite reflectance (Bands 2, 3, and 4). …”
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Simultaneous Content Determination of Mono-, Di-, and Fructo-oligosaccharides in Citrus Fruit Juices Using an FTIR-PLS Method Based on Selected Absorption Bands
Published 2024-01-01“…In order to prevent overfitting in the PLS method, we concentrated on reducing the amount of spectral data used in the analysis. …”
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198
Forensic Analysis of Marijuana: Approaches to Establishing Belonging to Previously Separated Plant Mass
Published 2025-01-01“…The possibility of interpreting spectral data using discriminant analysis of projections on latent structures is shown. …”
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199
Pulsed Laser Deposition Method Used to Grow SiC Nanostructure on Porous Silicon Substrate: Synthesis and Optical Investigation for UV-Vis Photodetector Fabrication
Published 2025-04-01“…The SiC/P-Si heterojunction photodetector exhibited rectification behavior in its dark I–V characteristics, indicating high junction quality. The spectral responsivity of the SiC/P-Si observed a peak responsivity of 0.0096 A/W at 365 nm with detectivity of 24.5 A/W Jones, and external quantum efficiency reached 340%. …”
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Inter-annual changes and growth trends mapping of mangrove using Landsat time series imagery
Published 2025-12-01“…In this study, a novel mangrove index, named the Composite Mangrove Index (CMI), was developed to map and assess the growth trends of mangroves, based on the truth that the spectral-temporal features of mangrove wetland environment related to greenness, moisture, and bare soil. …”
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