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Showing 481 - 500 results of 15,724 for search 'determined (coefficiency OR efficient) method', query time: 0.26s Refine Results
  1. 481

    A Field data- based method to determine the pressure-burst relationships in urban water distribution networks by Yasaman Taj Abadi, Mohamadreza Jalili Ghazizade, Iman Moslehi

    Published 2018-03-01
    “…Therefore, the development of models to predict precisely failure based on effective factors is necessary to achieve optimal leakage management in water distribution networks. Materials and methods: In the present study, using a developed model and Pressure and burst field data analysis in urban water distribution network, the relationship between pressure and burst rate for a district of Tehran has been determined. …”
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    Article
  2. 482

    Ammonium Content Determination by Different Analytical Methods in the Manure with Different Additives and Its Change During Storage by Irmantas Parašotas, Violeta Juškienė, Alvyra Šlepetienė, Gitana Kadžienė

    Published 2024-12-01
    “…We compared three analytical methods for NH<sub>4</sub><sup>+</sup> determination: distillation, ionometry, and spectrophotometry. …”
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    Article
  3. 483

    Determination method of trace amount of arsine and phosphine in ethylene and propylene based on gas chromatography-mass spectrometry by HUO Daa, CHEN Feia, LAI Jin-bob, SHI De-junc, WANG Chun-yana, CAO Qinga

    Published 2025-01-01
    “…"A method for simultaneous determination of trace amount of arsine and phosphine in ethylene and propylene was developed based on gas chromatography-mass spectrometry, and the limit of detection, linear range, recovery rate and repeatabi-lity of the method were investigated. …”
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    Article
  4. 484

    Acceptability criteria for linear dependence in validating UV-spectrophotometric methods of quantitative determination in forensic and toxicological analysis by L. Yu. Klimenko, G. P. Petyunin, S. M. Trut, V. P. Moroz

    Published 2014-08-01
    “…Materials and methods. UV-spectrophotometric method of doxylamine quantitative determination in blood. …”
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    Article
  5. 485

    Determination of the Chemical Stability of Cyanocobalamin in Medical Food by a Validated Immunoaffinity Column-Linked HPLC Method by Wonjong Lee, Yoon-Bok Lee, Moon Haeng Huh, Jae Kwon Choi

    Published 2022-01-01
    “…The linearity of this method was calculated with a value of the coefficient of determination (R2) ≥ 0.999. …”
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    Article
  6. 486

    Development of a Method for the Determination of Chromium and Cadmium in Tannery Wastewater Using Laser-Induced Breakdown Spectroscopy by Mahwish Bukhari, M. Ali Awan, Ishtiaq A. Qazi, M. Anwar Baig

    Published 2012-01-01
    “…This paper illustrates systematic development of a convenient analytical method for the determination of chromium and cadmium in tannery wastewater using laser-induced breakdown spectroscopy (LIBS). …”
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    Article
  7. 487

    Determination of Total Flavonoids Contents and Antioxidant Activity of Ginkgo biloba Leaf by Near-Infrared Reflectance Method by Ling-jia Zhao, Wei Liu, Su-hui Xiong, Jie Tang, Zhao-huan Lou, Ming-xia Xie, Bo-hou Xia, Li-mei Lin, Duan-fang Liao

    Published 2018-01-01
    “…The coefficients of determination (R2) for TFC and total antioxidant activity prediction were 0.8863 and 0.8486, respectively; and the root mean square errors of prediction (RMSEP) were 2.203 mg/g and 0.2211 mM/g, respectively. …”
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    Article
  8. 488
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  11. 491

    Continuous Flow Injection Analysis Method for the Determination of a Drug Diphenhydramine Hydrochloride by Using Phosphomolybdic Acid by Muntadhar M. Jabbar, Elham N. Mezaal

    Published 2024-08-01
    “… The study presented a new method for determining diphenhydramine hydrochloride (DPH) in its pure form and some pharmaceutical preparations, within CFIA technique. …”
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    Article
  12. 492
  13. 493

    Determination of morphine, codeine and 6-monoacetylmorphine in saliva of substance-abuse patients using HPLC/MS methods by Milovanović Vesna, Ćirić Biljana, Milenković Jasna, Kilibarda Vesna, Ćurčić Marijana, Vučinić Slavica, Antonijević Biljana

    Published 2012-01-01
    “…Saliva represents an alternative specimen for substances abuse determination in toxicology. Hence, the aim of this study was to optimize a method for saliva specimen preparation for heroin metabolites, morphine and 6-monoacetylmorphine (6-mam), and codeine determination by liquid chromatography-mass spectrometry (LC/MS), and to apply this method on saliva samples taken from the patients. …”
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    Article
  14. 494

    Development and psychometric evaluation of the child marriage cognitive determinants questionnaire (CMCDQ): a mixed-methods study by Bahman Baraie, Haidar Nadrian, Mehdi Rezaei, Abdolrasoul Safaiyan, Hossein Matlabi

    Published 2025-08-01
    “…This study aimed to develop and evaluate the Child Marriage Cognitive Determinants Questionnaire (CMCDQ). An exploratory sequential mixed methods research design was conducted from 2021 to 2022 in Sanandaj, Iran. …”
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    Article
  15. 495

    Study on rapid determination method of ash content in wheat flour based on stochastic forest regression model by LIU Yanqun, XIAO Fugang, CHEN Caihong

    Published 2024-09-01
    “…ObjectiveTo achieve rapid and accurate determination of ash content in wheat flour.MethodsBy preprocessing wheat raw materials and analyzing key influencing factors such as milling time and conductivity in depth, these factors were introduced as characteristic variables into a random forest regression model to construct a wheat flour ash content determination model. …”
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    Article
  16. 496

    Development of an Eco-Friendly Method for Iron Extraction and Determination in Pharmaceuticals Using Ciprofloxacin Drug as Chelating agent by Baghdad Science Journal

    Published 2016-06-01
    “…Several variables which impact on the extraction and determination of Fe (III) are optimized in order to maximize the extraction efficiency and improve the sensitivity of the method. …”
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    Article
  17. 497

    Decision Support System for Determining Disease and Pest Handling in Chili Plants Using WP and VIKOR Methods by Muhammad Mulkan Jalila, Wahyu Fuadi, Ar Razi

    Published 2025-07-01
    “…The WP method is used to calculate attribute assessments by multiplication, where each criterion is weighted according to its level of importance. …”
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    Article
  18. 498

    Determination of the optimal row distance for double row piles and the calculation method for earth pressure between piles by Ke TANG, Hua ZHAO, Xuefeng TANG, Rusong CHENG

    Published 2025-03-01
    “…Comparison with the original scheme and the existing studies shows that the results are consistent with previous findings, validating the reliability of the calculation method presented in this study. In conclusion, this study provides a valuable insight for rapidly determining the optimal spacing of double-row piles and calculating the soil pressure between piles.…”
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    Article
  19. 499

    Efficient Neural Network Control of a Brushless DC Motor by A. A. Vеlchеnko, S. A. Pauliukavеts, A. A. Radkеvich, A. K. Ibrahim

    Published 2025-02-01
    “…A proactive calculation of the neural network was carried out, and the rules for adjusting the weighting coefficients were determined. Based on proactive calculation, a PID controller with self-adjusting parameters using a neural network was built, as well as a block diagram of the PID control system was built on the basis of the BP neural network; also, a speed controller was built using MATLAB modules. …”
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    Article
  20. 500