Showing 2,721 - 2,740 results of 9,796 for search 'determined efficiency (method OR methods)', query time: 0.30s Refine Results
  1. 2721
  2. 2722

    Objective and Subjective Assessment of the Sound Attenuation Efficiency Obtained by Custom Moulded Earplugs with Various Acoustic Filters – a Preliminary Study by Roman Gołębiewski, Andrzej Wicher, Artur Duraj, Milena Kaczmarek-Klinowska, Karina Mrugalska-Handke

    Published 2022-06-01
    “…The attenuation value was defined as the difference (in dB) between the hearing threshold of the test signal with a hearing protector and the hearing threshold determined without a hearing protector. Results: The results of the objective method proved that in addition to the significant impact of frequency on the attenuation values, the type of filter used in custom moulded earplugs also had a significant effect. …”
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  3. 2723

    Study on the Power Consumption Characteristic and Energy Conservation Potential of Continuously Variable Transmission by Zhang Pengfei, Zhang Bojun, Dong Xiaowei, Hao Yunzhi

    Published 2016-01-01
    “…A method of measuring CVT power consumption and efficiency is presented by using a low power electric closed test bed. …”
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  4. 2724
  5. 2725

    RATING OF THE REGIONS OF UKRAINE BY THE LEVEL OF COMPETITIVE ADVANTAGES OF INDUSTRY by S.О. Ishchuk

    Published 2018-09-01
    “…Using the author’s methodical approach, integral indices of competitive advantages characterizing activity (production, export, investment, capital, innovation) and efficiency (resource and economic) of Ukraine are calculated. …”
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  6. 2726
  7. 2727
  8. 2728
  9. 2729

    SPECIFICS OF FORMATION AND EFFECTIVE USE OF CURRENT ASSETS IN CONSTRUCTION by T. E. Chetin

    Published 2019-05-01
    “…This study is aimed at identifying the specifics of managing current assets in construction enterprises and developing a set of practical measures that can enhance the efficiency of their use.Method. In the course of the study, a system approach was taken, comparative and functional-cost analysis methods.Result. …”
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  10. 2730
  11. 2731

    Synthesis of novel magnesium ferrite Schiff base chitosan nanocomposite for efficient removal of pb(II) ions from aqueous media by Nada S. Al-Kadhi, Ehab A. Abdelrahman, Fowzia S. Alamro, Reem K. Shah, Fawaz A. Saad, Khalil ur Rehman

    Published 2025-02-01
    “…Abstract In this study, a novel MgFe2O4-Schiff base-chitosan nanocomposite was synthesized using a straightforward crosslinking method. The synthesis involved integrating MgFe2O4 nanoparticles with modified chitosan through a Schiff base formed by the reaction between terephthalaldehyde and aminopyrazine. …”
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  12. 2732

    QuEChERS combined with ultra-high performance liquid chromatography-tandem mass spectrometry to determine acrylamide in Xinjiang Naan products by XU Man, SONG Shaolong, HU Jun, SHI Haiyun, LIU Jian

    Published 2024-11-01
    “…ObjectiveThis study aimed to establish a rapid and accurate analytical method for the determination of acrylamide in Xinjiang characteristic Naan products.MethodsThe methodology involved adding the internal standard 13C3-acrylamide isotope to the samples, followed by the sequential addition of 9 mL of water, 10 mL of acetonitrile, 6 mL of n-hexane, 6 g of anhydrous magnesium sulfate, and 1.5 g of sodium acetate salting agent. …”
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  13. 2733

    The effect of crop rotations and mineral fertilizers on economic and energy efficiency indicators when cultivating winter wheat in the Central Blackearth region by V. A. Lukyanov, L. B. Nitchenko

    Published 2023-12-01
    “…Economic efficiency is an integral method of analyzing agricultural technologies, especially against the rising prices for plant protection products, seeds, fertilizers, and fuels and lubricants. …”
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  14. 2734

    Microwave-assisted synthesis of antimony oxide nanoparticles for the determination of trace cadmium in mulberry leaf tea matrices by flame atomic absorption spectrophotometry by Merve Nur İnce, Hakan Serbest, Sezgin Bakirdere

    Published 2024-12-01
    “…Abstract In this study, a rapid, sensitive and accurate analytical method was optimized for the determination of trace levels of cadmium (Cd) by flame atomic absorption spectrophotometry (FAAS) after antimony oxide nanoparticles (AO-NPs)-based dispersive solid-phase extraction (DSPE). …”
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  15. 2735

    The spillover effect of Financial Decentralization on Efficiency of public Transprt Delivery in the Provinces of Iran during 2006-2016: Using Spatial Econometrics by Mohammad Hassan Fotros, Mohammad Alizadeh, Maryam KHodaverdi Samani

    Published 2022-08-01
    “…In the second step, the space panel analysis method is used to investigate the effect of financial decentralization on the estimated efficiency coefficients. …”
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  16. 2736

    Design of a High-Efficiency External Rotor Interior Permanent Magnet Synchronous Motor Without Magnetic Leakage Flux Path by Kyoung-Soo Cha, Jae-Hyun Kim, Soo-Gyung Lee, Min-Ro Park

    Published 2025-06-01
    “…The conventional model based on an external rotor surface-mounted permanent magnet synchronous motor (SPMSM) is analyzed using a statistical method. Design directions are derived by comparing efficiencies at two major operating points with different motor characteristics. …”
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  17. 2737

    Determination of 17 types of phthalates in drinking water by solid-phase extraction coupled with multiple reaction monitoring of gas chromatography-mass spectrometry by SHI Mengxing, YANG Yan, DU Limin

    Published 2025-01-01
    “…The precision and accuracy of this method were assessed by determining the standard curves, detection limits, quantification limits, relative standard deviations (RSD) and average spiked recovery rates for the 17 types of PAEs. …”
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  18. 2738

    The relationship between ethical procurement, corporate image and procurement efficiency in public sector procurement: A case of public entities in Bindura by Tendai Towo, Knowledge Jonasi

    Published 2024-06-01
    “…According to this method, given the target population of 120 and a margin of error of 5% based on 95% confidence level, with a response distribution of 50%, the minimum recommended sample size for this study was 73. …”
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  19. 2739

    Dynamic Grouping Control of BESS for Remaining Useful Life Extension and Overall Energy Efficiency Improvement in Smoothing Wind Power Fluctuations by Yang Yu, Dongyang Chen, Yuwei Wu, Boxiao Wang, Yuhang Huo, Wentao Lu, Zengqiang Mi

    Published 2025-01-01
    “…The upper layer achieves power allocation from BESS into the three BGs and power allocation method for each BG is determined. The lower layer, considering PCS efficiency under different working conditions, finishes power allocation from each BG into BUs inside it. …”
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  20. 2740

    Effects of heterologously overexpressing Manihot esculenta Crantz MeNRT2.6 gene in Arabidopsis thaliana on nitrogen utilization efficiency by Min ZHAI, Yingjie CAO, Chenyu LIN, Pingjuan ZHAO, Wenbin LI, Xiaoling YU, Wenbin LIAO, Mengbin RUAN, Liangping ZOU, Zhuang LI

    Published 2025-07-01
    “…Under 0.5 mmol/L nitrate nitrogen treatment, MeNRT2.6 expression was induced in cassava roots, stems and leaves depending on the treatment method. Under 39.5 mmol/L nitrate nitrogen treatment, MeNRT2.6 expression was specifically induced in leaves regardless of treatment method. …”
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