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Showing 5,121 - 5,140 results of 15,724 for search 'determined (coefficient OR efficient) methods', query time: 0.28s Refine Results
  1. 5121

    Application of Multivariable Analysis and FTIR-ATR Spectroscopy to the Prediction of Properties in Campeche Honey by Francisco Anguebes, Lucio Pat, Bassam Ali, Armando Guerrero, Atl V. Córdova, Mohamed Abatal, José P. Garduza

    Published 2016-01-01
    “…The developed models were validated using cross-validation and external validation; several statistical parameters were obtained to determine the robustness of the calibration models: (PCs) optimum number of components principal, (SECV) standard error of cross-validation, (R2cal) coefficient of determination of cross-validation, (SEP) standard error of validation, and (R2val) coefficient of determination for external validation and coefficient of variation (CV). …”
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    Article
  2. 5122
  3. 5123

    Predicting the value of the rock quality index in the Q-system using gene expression programming by M. H. Taban, M. Hajiazizi, R. Ghobadian

    Published 2019-11-01
    “…The innovation of this paper is that instead of 6 parameters, only three influential ones were used for determining the value of Q. Using the three parameters RQD, Jn and Ja, which have been determined as the most effective parameters and applying Pearson correlation analysis method, the value of Q can be determined with an acceptable approximation. …”
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    Article
  4. 5124
  5. 5125

    Direct Quantitative Analysis of Arsenic in Coal Fly Ash by Sri Hartuti, Shinji Kambara, Akihiro Takeyama, Kazuhiro Kumabe, Hiroshi Moritomi

    Published 2012-01-01
    “…A rapid, simple method based on graphite furnace atomic absorption spectrometry is described for the direct determination of arsenic in coal fly ash. …”
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  6. 5126
  7. 5127
  8. 5128

    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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    Article
  9. 5129

    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
  10. 5130

    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
  11. 5131
  12. 5132

    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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  13. 5133
  14. 5134
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  16. 5136

    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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    Article
  17. 5137

    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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  18. 5138

    Validation and Discriminant Analysis of the Athens Insomnia Scale in Older Adults by Huseyin Elbi, Melike Batum, Ece Ozlem Oztürk, Merve Vatansever Balcan, Ayşin Kisabay Ak, Hikmet Yilmaz, Omer Aydemir

    Published 2025-06-01
    “…ABSTRACT Objective This study aimed to validate and discriminate the “Athens Insomnia Scale” in aged. Methods Patients were assessed using the Athens Insomnia Scale (AIS) and the Pittsburg Sleep Quality Index (PSQI). …”
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  19. 5139

    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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  20. 5140

    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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