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Showing 5,141 - 5,160 results of 15,724 for search 'determined (coefficient OR efficient) methods', query time: 0.29s Refine Results
  1. 5141

    Detection of Organophosphorus Pesticides in Wheat by Ionic Liquid-Based Dispersive Liquid-Liquid Microextraction Combined with HPLC by Wei Liu, Ji Quan, Zeshu Hu

    Published 2018-01-01
    “…It was found that the use of 1-octyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([OMIM][Tf2N]) had both high enrichment efficiency and appropriate extraction recovery. Finally, the method was used for the determination of three wheat samples, and the recoveries of them were 74.8–112.5%, 71.8–104.5%, and 83.8–115.5%, respectively. …”
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    Article
  2. 5142

    The Application of Green-Synthesis-Derived Carbon Quantum Dots to Bioimaging and the Analysis of Mercury(II) by Qianchun Zhang, Xiaolan Zhang, Linchun Bao, Yun Wu, Li Jiang, Yuguo Zheng, Yuan Wang, Yafei Chen

    Published 2019-01-01
    “…The sensor exhibited a linear range for Hg2+ of 0.50–20 μM, with an excellent coefficient of determination (R2 = 0.9966) and limit of detection (12.4 nM). …”
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    Article
  3. 5143
  4. 5144

    Stability and vibration analyses of tapered columns resting on one or two-parameter elastic foundations by Masoumeh Soltani, Foudil Mohri

    Published 2014-12-01
    “…In order to demonstrate the accuracy and the efficiency of presented method, several numerical examples including in the free-vibration and buckling analysis of non-prismatic columns, portal frame, and gable frame are presented and obtained results compared with the results of other available numerical and theoretical approaches. …”
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    Article
  5. 5145

    Strategic Combination of Isocratic and Gradient Elution for Simultaneous Separation of Polar Compounds in Traditional Chinese Medicines by HPLC by Mei-Tuo Zhang, Xiao-Xue Ye, Wei Lan, Yan-Ling Yang, Tsunghsueh Wu, Yu-Sang Li, He-Bin Tang

    Published 2018-01-01
    “…This method therefore provides a more efficient way to determine the polar components present in traditional Chinese medicines. …”
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  6. 5146
  7. 5147

    In Situ Synthesis of a Magnetic Graphene Platform for the Extraction of Benzimidazoles from Food Samples and Analysis by High-Performance Liquid Chromatography by Qianchun Zhang, Yulan Liu, Xingyi Wang, Huimin Li, Junyu Chen

    Published 2017-01-01
    “…A novel method was proposed for the determination of five benzimidazoles (oxfendazole, mebendazole, flubendazole, albendazole, and fenbendazole) using magnetic graphene (G-Fe3O4). …”
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  8. 5148

    A Human Oral Fluid Assay for D- and L- Isomer Detection of Amphetamine and Methamphetamine Using Liquid-Liquid Extraction by Brian Robbins, Rob E. Carpenter, Mary Long, Jacob Perry

    Published 2022-01-01
    “…And clinical laboratories need a sensitive, efficient assay for routine assessment of D- and L-isomers to determine the probable source of these potentially illicit analytes. …”
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  9. 5149
  10. 5150
  11. 5151

    A comparative approach of analyzing data uncertainty in parameter estimation for a Lumpy Skin Disease model by Edwiga Renald, Miracle Amadi, Heikki Haario, Joram Buza, Jean M. Tchuenche, Verdiana G. Masanja

    Published 2025-01-01
    “…The assessment of the uncertainties is determined with the help of Adaptive Metropolis Hastings algorithm, a Markov Chain Monte Carlo (MCMC) standard statistical method. …”
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  12. 5152
  13. 5153

    Quantitative Analysis of Eight Triterpenoids and Two Sesquiterpenoids in Rhizoma Alismatis by Using UPLC-ESI/APCI-MS/MS and Its Application to Optimisation of Best Harvest Time and... by Yanni Tai, Fuxian Zou, Qiurong Zhang, Jia Wang, Ronghui Rao, Ruihua Xie, Shuisheng Wu, Kedan Chu, Wen Xu, Xiaoyan Li, Mingqing Huang

    Published 2019-01-01
    “…All recoveries of the 10 marker compounds ranged from 97.24% to 102.49% with RSDs less than 4.05%. The developed method efficiently determined the 10 marker compounds in RA and was subsequently applied to optimise harvest time and crude processing temperature. …”
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    Article
  14. 5154

    Automated analysis of photoelectron yield spectroscopy spectra interpreted via power laws by Shinjiro Yagyu, Michiko Yoshitake, Takahiro Nagata, Takeshi Yasuda, Takatsugu Wakahara, Yubin Liu, Yoshiyuki Nakajima

    Published 2025-12-01
    “…In cases with multiple candidate models, the optimal model is chosen based on the coefficient of determination using the 1/n plot method. …”
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  15. 5155

    Simultaneous Analysis of Ursolic Acid and Oleanolic Acid in Guava Leaves Using QuEChERS-Based Extraction Followed by High-Performance Liquid Chromatography by Chang Xu, Yiyi Liao, Chunyan Fang, Makoto Tsunoda, Yingxia Zhang, Yanting Song, Shiming Deng

    Published 2017-01-01
    “…In this paper, a novel method of QuEChERS-based extraction coupled with high-performance liquid chromatography has been developed for the simultaneous determination of ursolic acid (UA) and oleanolic acid (OA) in guava leaves. …”
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  16. 5156

    Red Wine Age Estimation by the Alteration of Its Color Parameters: Fourier Transform Infrared Spectroscopy as a Tool to Monitor Wine Maturation Time by M. Basalekou, C. Pappas, Y. Kotseridis, P. A. Tarantilis, E. Kontaxakis, S. Kallithraka

    Published 2017-01-01
    “…The proposed method is simpler, less time consuming, and more economical and does not require chemical reagents.…”
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  17. 5157

    Simultaneous Analysis of Losartan Potassium, Amlodipine Besylate, and Hydrochlorothiazide in Bulk and in Tablets by High-Performance Thin Layer Chromatography with UV-Absorption De... by Karunanidhi Santhana Lakshmi, Sivasubramanian Lakshmi

    Published 2012-01-01
    “…The suitability of this method for quantitative determination of these compounds was by validation in accordance with the requirements of pharmaceutical regulatory standards. …”
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  18. 5158

    Development of Sensitive and Specific Analysis of Vildagliptin in Pharmaceutical Formulation by Gas Chromatography-Mass Spectrometry by Ebru Uçaktürk

    Published 2015-01-01
    “…A sensitive and selective gas chromatography-mass spectrometry (GC-MS) method was developed and fully validated for the determination of vildagliptin (VIL) in pharmaceutical formulation. …”
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  19. 5159

    Measurement of Pharmacokinetics and Tissue Distribution of Four Compounds from Nauclea officinalis in Rat Plasma and Tissues through HPLC-MS/MS by Yuhuang Wu, Liyan Li, Guxu Ming, Xinyue Ma, Changfu Liang, Yonghui Li, Xiaoning He

    Published 2022-01-01
    “…Mass spectrometric detection was performed in multiple reaction monitoring (MRM) mode utilizing electrospray ionization (ESI) in negative mode. The developed method exhibited good linearity (determination coefficients, R2 ≥ 0.9849), and the lower limits of quantification were 2, 5, 5, and 25 ng/mL for chlorogenic acid, naucleactonin C, khaephuoside A, and 3,4-dimethoxyphenyl-1-O-β-apiofuroseyl(1 ⟶ 2)-β-D-glucopyranoside. …”
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  20. 5160