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181
Modeling the influence of age on the technical efficiency by sector and time periods
Published 2021-12-01Subjects: Get full text
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182
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183
Determination of organic matter in organic-inorganic complex fertilizers
Published 2004-01-01“…The correlation between the values determined with the new methods and the real values is statistically significant with coefficient 0.9999 and 0.9851. …”
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184
Establishment and Application of Bed-Separation Water Inrush Coefficient Method Considering Water Resistance of Fractured Rock Mass
Published 2022-01-01“…In this paper, taking three coal mines in Ordos Basin as research cases, the water resistance of fractured rock mass was analyzed, and a BWI coefficient (BWIC) method for BWI risk assessment was established. …”
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185
Optimization of texture design parameters for reduction of friction coefficient based on design of experiments and the modified acceleration gradient method
Published 2024-10-01“…In this study, we investigate a method of determining texture design parameters based on design of experiments and the modified acceleration gradient method. …”
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186
Haar wavelet collocation method for existence and numerical solutions of fourth-order integro-differential equations with bounded coefficients
Published 2025-04-01“…The method is accurate, easily applicable, and efficient.…”
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187
Research on Typical Scenarios Based on Fusion Density Peak Value and Entropy Weight Method of Pearson’s Correlation Coefficient
Published 2023-05-01“…In this paper, a typical scenario clustering center determination method based on fusion density peak value and entropy weight method of Pearson’s correlation coefficient is proposed. …”
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188
Estimation of Manning\'s Roughness Coefficient by the Inverse Solving Method using Observational Data (Sanij River-Yazd, Iran)
Published 2024-07-01“…The present study mainly aims to determine more precisely the roughness coefficient of the Sanij River upstream of the Faizabad hydrometric station. …”
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189
Development of Spectrophotometric method for quantitative determination of dexamethasone in pharmaceutical preparations
Published 2023-01-01“… This Study is concerned a fast, easy, sensitive, accurate and economical spectrophotometric method for the determination of Dexamethasone. This method based on the use of UV- spectra measurements at 242 nm. …”
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190
Kinetic- spectrophotometric Method for the Determination of Naringenin in Pure and Supplements Formulations
Published 2019-09-01“…Simple, cheap, sensitive, and accurate kinetic- spectrophotometric method has been developed for the determination of naringenin in pure and supplements formulations. …”
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191
New Method for the Determination of DL-Histidine by FIA and Chemiluminometric Detection
Published 2010-06-01“…This paper present a simple and sensitive method for the determination of DL-Histidine using FIA-Chemiluminometric measurement resulted from oxidation of luminol molecule by hydrogen peroxide in alkaline medium in the presence of DL-Histidine. …”
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192
Particle determination of red soils using micro-pipette method
Published 2001-11-01“…Micro-pipette method could meet requirement for rapid determination of soil particle composition. …”
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193
Application of the SBAS/EGNOS positioning method to determine UAV coordinates
Published 2022-02-01“… Abstract: The article presents the results of research on determining the UAV (Unmanned Aerial Vehicle) position using the SBAS (Satellite Based Augmentation System) positioning method for the EGNOS (European Geostationary Navigation Overlay Service) support system. …”
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194
Development and Validation of RP-HPLC Method for the Determination of Dexrabeprazole Sodium
Published 2021-12-01“…A rapid and simple liquid chromatographic method was developed for the quantitative determination of dexrabeprazole sodium in the tablet dosage form. …”
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195
Determination of Copper(II) Ions by Diffuse Reflectance Spectroscopy Method
Published 2019-05-01“…A method for copper(II) determination based on copper(II) ions interaction with the organic reagent picramine-ε, concentrating the formed complex on a solid-phase matrix and recording diffuse reflectance spectroscopy spectra by a portable combined LED miniphotometer was developed. …”
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196
Establishment and Application of a Method for the Determination of Ganoderic Acid A
Published 2020-01-01“…The results of the determination of ganoderic acid A standard by this method showed that the coefficient of variation of repeated wells in the group was <5%, the detection limit of ganoderic acid A was 0.6 μg/L, and ganoderic acid A had a substantial dose-response relationship in the content range of 0.9–72.9 μg/L (R2 = 0.994). …”
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197
Determination method for trace polycyclic aromatic hydrocarbons in paddy soils
Published 2017-11-01“…The PAHs are usually extracted and purified by organic solvent prior to determination. In order to improve determination accuracy and recovery rate, the pretreatment conditions for the determination of 16 PAHs in paddy soils are of great significance.On the basis of former work, in order to get the highest extraction efficiency and recovery rate, we compared two different extract solvent mixtures, four different clean-up columns and three different elution solutions, and also compared the elution volume and temperature of nitrogen blowing to optimize the determination method for trace PAHs in paddy soils under the laboratory condition. …”
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198
The problem of determining the antioxidant additive in transformer oil by chromatographic methods
Published 2020-12-01“…In this case, the dielectric properties deteriorate, which can damage the transformer equipme nt. METHODS. To increase the service life of oil-filled electrical equipment, an antioxidant additive is introduced into the transformer oil at the stage of its manufacture, which is most often used as ionol, the concentration of which must be constantly controlled by various instrumental methods. …”
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199
Development and Validation of Spectrophotometric Methods for the Determination of Rasagiline in Pharmaceutical Preparations
Published 2013-01-01“…This study presents three simple, rapid, and accurate spectrophotometric methods for the determination of Rasagiline (RSG) in pharmaceutical preparations. …”
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200
HPLC method for simultaneous determination of oxytocin and clorobutanol in injectable solutions
Published 2013-11-01“…The objective of this work was to establish and validate a HPLC method with UV detection for simultaneous determination of oxytocin and clorobutanol in veterinary injectable formulations. …”
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