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Showing 481 - 500 results of 15,724 for search 'determined (coefficient OR efficient) method', query time: 0.25s Refine Results
  1. 481
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  6. 486

    Development and Validation of a High‐Performance Liquid Chromatography Method for the Determination of Epoxyaurapten From Pomelo Peel by Hui Ni, Dongfeng Guo, Xue Li, Lijun Li, Yuanfan Yang, Xiping Du, Yang Hu, Shuyu Zhang, Feng Chen, Fan He

    Published 2025-08-01
    “…The effects of extraction solvent, liquid‐to‐material ratio, ultrasonic time, and extraction cycles on the extraction of epoxyaurapten from pomelo peel were investigated, and the optimal sample pretreatment conditions were determined to ensure the extraction efficiency. The results indicated a high degree of precision with a linear correlation coefficient of 0.9999. …”
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    Article
  7. 487

    Simultaneous Determination of Multiple Acid-Suppressing Drugs by UPLC-MS/MS Method and Application for Pharmacokinetics Study by Li X, Liu S, Yu M, Xi W, Wu X, Liu D, Liu A, Wang H

    Published 2025-02-01
    “…Precisely quantifying their plasma levels is crucial for clinical pharmacokinetic assessments and therapeutic drug monitoring.Aim: This study aimed to establish a generic and efficient ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) assay for the determination of five PPIs (esomeprazole, rabeprazole, ilaprazole, lansoprazole, and pantoprazole) and the P-CAB (vonoprazan) in human plasma.Methods: The six analytes were extracted from human plasma via protein precipitation and a single dilution step. …”
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  8. 488

    Continuous Flow Injection Analysis Method for the Determination of a Drug Diphenhydramine Hydrochloride by Using Phosphomolybdic Acid by Muntadhar M. Jabbar, Elham N. Mezaal

    Published 2024-08-01
    “… The study presented a new method for determining diphenhydramine hydrochloride (DPH) in its pure form and some pharmaceutical preparations, within CFIA technique. …”
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    Article
  9. 489
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    Determination of morphine, codeine and 6-monoacetylmorphine in saliva of substance-abuse patients using HPLC/MS methods by Milovanović Vesna, Ćirić Biljana, Milenković Jasna, Kilibarda Vesna, Ćurčić Marijana, Vučinić Slavica, Antonijević Biljana

    Published 2012-01-01
    “…Saliva represents an alternative specimen for substances abuse determination in toxicology. Hence, the aim of this study was to optimize a method for saliva specimen preparation for heroin metabolites, morphine and 6-monoacetylmorphine (6-mam), and codeine determination by liquid chromatography-mass spectrometry (LC/MS), and to apply this method on saliva samples taken from the patients. …”
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  11. 491
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    Establishment of QuEChERS-UPLC-MS/MS method to determine three kinds of ochratoxins in coffee by GAO Yunkai, CHEN Xiaomei, CHEN Chunqian, ZHOU Lingyu, DENG Yinglin, YIN Qingchun

    Published 2023-12-01
    “…<b>Objective:</b> A new method was developed for the simultaneous determination of three kinds of ochratoxins in coffee by ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) combined with QuEChERS pretreatment. …”
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  13. 493

    Analytical Methods for the Determination of the Distribution of Total Petroleum Hydrocarbons in the Water and Sediment of Aquatic Systems: A Review by A. O. Adeniji, O. O. Okoh, A. I. Okoh

    Published 2017-01-01
    “…Several methods of extraction and analytical determination for total petroleum hydrocarbons (TPHCs) in aqueous and solid samples are reviewed. …”
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  14. 494

    ALTERNATIVE METHOD FOR DETERMINING METAL UPTAKE FROM WATER BY ESCHERICHIA COLI K12 CD3 by N. M. T. Jebril, A. K. Murad, R. A. Majeed, A. H. Al-Sabary, I. A. Abed, B. H. Hashim

    Published 2025-06-01
    “…By comparison, usual TEM-EDX analyzes show that the concentration was not qualitatively determined. At the same time, the ICP-M device was not as efficient in measuring cadmium concentrations. …”
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  15. 495
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    Determination of neutron spectrum parameters at IREN facility using the MCNP simulation and experimental validation by Nhat Le Tran Minh, Cong Vu Duc, Khiem Le Hong, Dinh Nguyen Thi, Thanh Pham Tien, Phi Truong Hoai Bao, Thai Nguyen Thi Xuan, Toan Tran Ngoc, Trung Dinh Van, Binh Nguyen Thanh, Son Nguyen An, Shetsov Valery Nikolaevich, Dmitriev Andrey Yuryevich, Lobachev Valerij Vladimirovich, Borzakov Sergey Borisovich

    Published 2025-01-01
    “…Our revised equation for determination of a shape parameter by the method of cadmium-ratio for multi-monitor has been used, in which the correction coefficients of the epithermal neutron transmission for cadmium cover, the thermal and epithermal neutron self-shielding, were included for improvement of the accuracy. …”
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  17. 497

    Energy Efficiency of Heat Pumps Heating Systems at Subsoil Waters for South-East Regions of Europe by Denysova A.E., Klymchuk O.A., Ivanova L.V., Zhaivoron O.S.

    Published 2020-12-01
    “…This article is devoted to the methods for increasing the operational efficiency of the single-stage and two-stage schemes of heat pump installations for heating systems, based on the energy saving principles. …”
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  18. 498

    Estimation of Damage Degree of Buildings in Earthquakes by Statistical Modeling Method by A. G. Tamrazyan, T. A. Matseevich

    Published 2024-09-01
    “…After transforming the elements of these databases, new statistical characteristics of damageability were obtained with variation coefficient values less than 0.30. The research results can be used to determine the seismic load calculation through the permissible damage coefficient.…”
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  19. 499

    Estimation of Reverberation Time in Classrooms Using the Residual Minimization Method by Artur NOWOSWIAT, Marcelina OLECHOWSKA

    Published 2017-11-01
    “…The objective of the residual minimization method is to determine a coefficient correcting the Sabine’s model. …”
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  20. 500

    Common inaccuracies and errors in the application of statistical methods in soil science by V. P. Samsonova, J. L. Meshalkina

    Published 2020-07-01
    “…Any statement about the type of relationship between features based on the correlation coefficient (Pearson or Spearman) is meaningless without specifying the number of replicates, since it is the number of replicates that determines the significance of the difference between the correlation coefficient and zero. …”
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