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Showing 741 - 760 results of 15,724 for search 'determined (coefficiency OR efficient) method', query time: 0.19s Refine Results
  1. 741
  2. 742

    On the applicability of semi-empirical methods for calculating the operating processes of a single-stage long-stroke reciprocating compressor in the sphere of wet steam by V. L. Yusha

    Published 2025-06-01
    “…The latter is determined by the lack of reliable experimental results, both in terms of the empirical dependencies used to determine the instantaneous heat transfer coefficient in the flow part of a low-speed reciprocating compressor, and in terms of verification of the obtained computational and theoretical results. …”
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  3. 743

    Step-Stress Test Method for Electrical Life Model Based on Cumulative Damage Curve and Its Application in XLPE Cable by Haoran BIAN, Lijun YANG, Zhipeng MA, Zhiwen DING, Zhongxuan LI

    Published 2020-09-01
    “…The parameters of IPM model including voltage endurance coefficient (VEC) are the important basis for cable insulation design and pre-qualification test voltage selection. …”
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    Article
  4. 744

    The Application of Quantitative <sup>1</sup>H-NMR for the Determination of Melatonin and Vitamin B6 in Commercial Melatonin Products by Xinyu Gao, Jiahao Niu, Zhengjian Xiao, Da Rong, Mingming Yu, Sherwin K. B. Sy, Cong Wang, Zhihua Lv

    Published 2025-07-01
    “…Compared to conventional methods, the <sup>1</sup>H-NMR technique offers a more efficient and simpler alternative, making it suitable for the simultaneous quantitative determination of melatonin and vitamin B6 hydrochloride. …”
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    Article
  5. 745

    Pretreatment method of forchlorfenuron residues in loquat by HPLC analysis by YANG Chunping, LI Zhaojun, NING Hong, CHEN Huabao, GONG Guoshu, YANG Jizhi, ZHANG Min

    Published 2016-05-01
    “…Therefore, residue detection of forchlorfenuron in fruits and vegetables is imperative.High-performance liquid chromatography (HPLC) analysis is a common detection method. The suitable conditions for the extraction and purification of sample play an important role prior to HPLC analysis.In this study, the extraction efficiency of forchlorfenuron residues in loquat was compared using matrix dispersive solid phase extraction and QuEChERS (quick, easy, cheap, effective, rugged, safe).The results showed that QuEChERS was a more suitable pretreatment method for the determination of forchlorfenuron residues in loquat, because it had obviously higher average recoveries than the matrix dispersive solid phase extraction. …”
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  6. 746

    Effect of seedling size on post-planting growth and survival of five Mexican Pinus species and their hybrids by José Alberto Ponce-Figueroa, Pablo Antúnez, José Ciro Hernández-Díaz, José Ángel Prieto-Ruíz, Artemio Carrillo-Parra, Pablito Marcelo López-Serrano, Christian Wehenkel

    Published 2024-12-01
    “…Therefore, the aim was to evaluate the influence of initial morphological parameters of 2,007 nursery seedlings of these species and their hybrids on their growth and survival 44 months after planting in the Sierra Madre Occidental, Mexico. Methods Spearman’s coefficient (rs) and the unbiased conditional pseudo coefficient of determination (R2c) between each specific predictor and each response variable and their 95% confidence interval (CI95%) were determined using Random Forest, generalized linear model, and bootstrapping. …”
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  7. 747

    Validated HPLC method for simultaneous determination of azelastine hydrochloride fluticasone propionate and oxymetazoline in nasal mucosa and nasopharyngeal swabs from real human s... by Neven N. Mikawy, Nancy Magdy, Marwa H. Mohamed, Amira M. El-Kosasy

    Published 2025-02-01
    “…Abstract A combination of three co-administrated drugs, such as azelastine hydrochloride (AZT), fluticasone propionate (FP), and oxymetazoline (OXY), is more effective than single therapy for the treatment of seasonal allergy and COVID-19. We established an efficient methodology for the determination of those analytes in spiked nasal mucosa and nasopharyngeal swabs from real human samples. …”
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    Article
  8. 748

    Improving the Efficiency of Electric Rolling Stock Operation Through the Use of Adaptive Filtering Methods for High Harmonic Current Components in Traction Drive Systems by Goolak S.

    Published 2023-11-01
    “…The aim of this work is to investigate the efficiency of various adaptive filtering methods for higher harmonic components of stator currents in a vector-controlled traction drive system to improve the operation efficiency of electric rolling stock. …”
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    Article
  9. 749

    Econometric assessment of the level of development of balanced foreign economic relations in conditions of uncertainty by T. A. Yadigarov

    Published 2022-02-01
    “…The author uses entropy, statistical and econometric methods, including coefficient and regression analyses. …”
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    Article
  10. 750

    Method of estimation of PM10 fine particle concentration during operation of centrifugal friction rollers by Safronov E.V., Nosko A.L., Sharifullin I.A., Guskova A.S.

    Published 2022-03-01
    “…The coefficient of environmental friendliness of the design of the brake roller of the friction type has been introduced, which is one of the factors determining the maximum number of braking, and takes values from 0 to 1.0 for various designs of the friction roller — closed type, ventilated and open type. …”
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  11. 751

    Complex processing geophysical survey and selection of methods for detailing the geological structure of mega-reservoirs (Hayan block, of the Palmyride fold belt) by V. L. Schuster, O. V. Tyukavkina, I. Kartal

    Published 2024-01-01
    “…The processed materials made it possible to select the most effective GWD combination for identifying the boundaries and fringe zones of sediments in the Kurrachine-Dolomite formation, considered as a mega reservoir, and to identify priority development objects similar in geological structure and reservoir properties.Conclusion. The proposed method for processing field geophysical materials (construction of correlation matrices and statistical processing of geological and field data) can be used in selecting an optimal combination of GWD for establishing the reservoir boundaries of the Kurrachine-Dolomite formation, quantifying the reservoir properties, and increasing the efficiency of the Jihar field development (mega reservoir of the Hayan block).…”
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  12. 752
  13. 753

    A combined experimental and analytical method to determine the EHL friction force distribution between rollers and outer raceway in a cylindrical roller bearing by Yu Hou, Xi Wang, Di Yang, Zeliang Xiao

    Published 2023-01-01
    “…A combined experimental and analytical method is proposed to quantitatively determine the elastohydrodynamic lubrication (EHL) friction force distribution between rollers and outer raceway in a cylindrical roller bearing (CRB). …”
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  14. 754
  15. 755

    Method Validation and Measurement Uncertainty Estimation for Determination of Multiclass Pesticide Residues in Tomato by Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) by Suraj Shrestha, Bandana Lamichhane, Nibedita Chaudhary

    Published 2024-01-01
    “…This study aimed to optimize and validate a fast, reliable, and accurate method for quantitatively determining pesticide residues of diverse chemical classes in the tomato matrix. …”
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  16. 756

    Optimization of a Natural-Deep-Eutectic-Solvent-Based Dispersive Liquid–Liquid Microextraction Method for the Multi-Target Determination of Emerging Contaminants in Wastewater by Beatriz Gómez-Nieto, Antigoni Konomi, Georgios Gkotsis, Maria-Christina Nika, Nikolaos S. Thomaidis

    Published 2025-07-01
    “…This work presents the development of a simple and environmentally friendly dispersive liquid–liquid microextraction (DLLME) method based on a hydrophobic natural deep eutectic solvent (NADES) for the determination of selected compounds from benzotriazole, benzothiazole, paraben, and UV filter families in wastewater samples. …”
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  17. 757
  18. 758

    METHOD OF SETTING THE RULES OF MATRIX CONFIGURATIONS ELEMENTS INDEXING by I. P. Kadiev1, P. A. Kadiev

    Published 2016-12-01
    “…Develop a way to define the rules of indexing elements of combinatorial matrix configurations.Methods. Introduced are the proposed rules use examples during elements permutation of matrix combinatorial configurations defined are families of derived configurations, formed by the individual elements, provided the element location in each possible positions of the configuration, determined is the number of possible configurations forming variants with the specified index environment, forming separate families.Results. …”
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  19. 759
  20. 760

    Temperature-dependent rate coefficients for the reactions of OH radicals with selected alkanes, aromatic compounds, and monoterpenes by F. Berg, A. Novelli, R. Dubus, A. Hofzumahaus, F. Holland, A. Wahner, H. Fuchs, H. Fuchs

    Published 2024-12-01
    “…The time-dependent decay of the <span class="inline-formula">OH</span> concentration was measured in a flow tube, allowing the pseudo-first-order rate coefficient to be determined after the production of a moderately high <span class="inline-formula">OH</span> concentration (about <span class="inline-formula">1×10<sup>9</sup></span> <span class="inline-formula">cm<sup>−3</sup></span>) by the photolysis of ozone in the presence of water vapour. …”
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