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Showing 5,121 - 5,140 results of 15,724 for search 'determined (coefficient OR efficient) (method OR methods)', query time: 0.33s Refine Results
  1. 5121
  2. 5122
  3. 5123

    Quantitative Analysis of Panax ginseng by FT-NIR Spectroscopy by Xin-fang Xu, Li-xing Nie, Li-li Pan, Bian Hao, Shao-xiong Yuan, Rui-chao Lin, Hai-bo Bu, Dan Wang, Ling Dong, Xiang-ri Li

    Published 2014-01-01
    “…Near-infrared spectroscopy (NIRS), a rapid and efficient tool, was used to determine the total amount of nine ginsenosides in Panax ginseng. …”
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  4. 5124

    Rapid Quality Identification of Decoction Pieces of Crude and Processed Corydalis Rhizoma by Near-Infrared Spectroscopy Coupled with Chemometrics by Weihao Zhu, Hao Hong, Zhihui Hong, Xianjie Kang, Weifeng Du, Weihong Ge, Changyu Li

    Published 2021-01-01
    “…These methods can greatly improve the efficiency of traditional Chinese medicine analysis and provide a strong scientific basis for the quality identification and control of traditional Chinese medicine.…”
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    Article
  5. 5125

    Compound Specific Extraction of Camptothecin from Nothapodytes nimmoniana and Piperine from Piper nigrum Using Accelerated Solvent Extractor by Vinayak Upadhya, Sandeep R. Pai, Ajay K. Sharma, Harsha V. Hegde, Sanjiva D. Kholkute, Rajesh K. Joshi

    Published 2014-01-01
    “…CPT and piperine were determined and quantified by using a simple and efficient UFLC-PDA (245 and 343 nm) method. …”
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    Article
  6. 5126
  7. 5127

    Analysis of an Aqueous Extract from Turkish Galls Based on Multicomponent Qualitative and Quantitative Analysis Combined with Network Pharmacology and Chemometric Analysis by Ya Zeng, Lu Zhao, Meng Hao, Mirzat Maimaiti, Zhi Li, Minghui Zhang, Xuan Ma

    Published 2024-01-01
    “…Statistical analysis revealed significant differences in the content of these 4 components across 14 batches of TG, with GA and PEGG identified as the primary contributors to the variations. This study determined a quality index for TG, providing a reference for quality evaluation and introducing a cost-effective and efficient quality control method. …”
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  8. 5128
  9. 5129
  10. 5130
  11. 5131

    A Simple, Rapid, Fluorometric Assay for Dopamine by In Situ Reaction of Boronic Acids and cis-Diol by Xiaoxia Liu, Miaomiao Tian, Wenmei Gao, Jinzhong Zhao

    Published 2019-01-01
    “…An efficient, sensitive, and low-cost method has been developed for turn-on fluorescence sensing of dopamine (DA). …”
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  12. 5132

    Quantitative Measurement of Plasma Free Metanephrines by a Simple and Cost-Effective Microextraction Packed Sorbent with Porous Graphitic Carbon and Liquid Chromatography-Tandem Ma... by Xin Xiong, Yuanyuan Zhang, Rongsheng Zhao

    Published 2021-01-01
    “…The analytes were well resolved, and potential interferences (54 substances) were investigated. This method was linear from 24.7–2717 pg/mL for metanephrine (MN) and 24.5–4010 pg/mL for normetanephrine (NMN) with a coefficient of determination (R2) higher than 0.994. …”
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  13. 5133

    Acylation of Chiral Alcohols: A Simple Procedure for Chiral GC Analysis by Mireia Oromí-Farrús, Mercè Torres, Ramon Canela

    Published 2012-01-01
    “…The best resolutions were obtained with 2-pentyl acetates (α=3.00) and 2-hexyl acetates (α=1.95). This method provides a very simple and efficient experimental workup procedure for analyzing chiral alcohols by chiral-phase GC.…”
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  14. 5134

    Preparation of Imazethapyr Surface Molecularly Imprinted Polymers for Its Selective Recognition of Imazethapyr in Soil Samples by Yanqiang Zhou, Yinhui Yang, Meihua Ma, Zhian Sun, Shanshan Wu, Bolin Gong

    Published 2018-01-01
    “…The results showed that good linearity was observed in the range of 0.10–5.00 μg/mL, with a correlation coefficient of 0.9995. The limit of detection (LOD) of this method was 15 ng/g, and the extraction recoveries of imazethapyr from real samples were in the range of 91.1–97.5%, which proved applicable for analysis of trace imazethapyr in soils. …”
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  15. 5135

    Identifying and validating the dimensions and components of improving the medical education system in the implementation of online curricula by Gita Zandieh, Aladdin Etemad Ahri, Zolfaghar Rashidi

    Published 2024-12-01
    “… Background: The current research was conducted with the aim of identifying and validating the dimensions and components of online curriculum implementation. Methods: The research was conducted with a mixed approach. …”
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    Article
  16. 5136

    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
  17. 5137

    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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  18. 5138
  19. 5139

    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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  20. 5140

    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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