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  1. 521

    Methodology study for determining the half-value layer using the Monte Carlo code PHITS by Ronald Soares, Marco Aurélio Lacerda

    Published 2024-09-01
    “…Primarily, simulations were conducted to determine the X-ray spectra resulting from the interaction of electron beams with different energies with a tungsten anode. …”
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  2. 522
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  4. 524

    Calculation of the Friction Coefficients of Flax Stems according to their Roughness Characteristics by V. G. Chernikov, R. A. Rostovtsev, R. A. Popov, V. Yu. Romanenko, A. A. Rostovtsev

    Published 2019-02-01
    “…(Conclusions) It has been established that as the humidity of flax stems increases, the molecular component of the friction coefficient increases too. It has been determined that when the moisture content of the stems is 20-45 percent, the friction coefficient values range from 0.38 to 0.98 percent.…”
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  5. 525

    Method of Testing of Sound Absorption Properties of Materials Intended for Ultrasonic Noise Protection by Dariusz PLEBAN

    Published 2013-09-01
    “…However, standardized methods enable determination of absorption coefficients of materials in the frequency range up to 4 kHz. …”
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  6. 526

    Investigation of the Effect of Restitution Coefficient on 3-Dimensional Rockfall Analyses by İbrahim Uykun, Mutluhan Akın, Ogün Ozan Varol

    Published 2025-01-01
    “…This study examines the effects of terrain restitution coefficients (Rn and Rt), which can be determined using various methods in rockfall modeling analyses, on factors such as runout paths, bounce heights, kinetic energy, and lateral dispersion. …”
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  7. 527

    Relationship between radon and oxygen diffusion coefficients in OPC concretes by P. Linares-Alemparte, M. Souto-Allaoui, C. Andrade-Perdrix

    Published 2025-08-01
    “…As concrete often forms the building envelope with the ground, it is interesting to investigate its performance as a barrier, i.e. its radon exhalation, which depends on the radon diffusion coefficient and thickness. Experimentally obtaining the radon diffusion coefficient in concrete is complicated, so it would be useful to be able to use an analytical method for its estimation from parameters that are easier to obtain, such as the oxygen diffusion coefficient, which can be determined experimentally with less difficulty and could even be estimated analytically. …”
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  8. 528

    New method for quantitatively characterizing emulsifying ability of oil displacement agents by ZOU Jirui, YUE Xiang’an, LI Xiaoxiao, SHAO Minglu, YANG Zhiguo, AN Weiqing

    Published 2025-05-01
    “…The method determined the experimental parameters (emulsification coefficient) characterizing the emulsifying ability of oil displacement agents by plotting the dynamic curve of emulsification oil rate at different rotational speeds. …”
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  9. 529

    Estimatation of evapotranspiration and crop coefficient of melon cultivated in protected environment by Cláudia S. Lozano, Roberto Rezende, Paulo S. L. de Freitas, Tiago L. Hachmann, Fernando A. S. Santos, André F. B. A. Andrean

    “…ABSTRACT The objective of this work was to determine the water consumption and the crop coefficient of melon in a protected environment. …”
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  10. 530

    Enhancing hydrodynamic efficiency in Autonomous Underwater Vehicles (AUVs) utilizing adjoint method and proper orthogonal decomposition. by Shorob Alam Bhuiyan, Md Jahid Hasan, Md Araful Hoque

    Published 2025-01-01
    “…While there have been notable breakthroughs in applying the adjoint technique to optimize air and land vehicles, there is still a deficiency in optimizing AUVs using the adjoint method. The present research explores how to improve the hydrodynamic efficiency of an AUV using the gradient-based adjoint technique and Proper Orthogonal Decomposition (POD). …”
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  14. 534

    DETERMINING THE VALUE OF DOUBLE BARRIER OPTION USING STANDARD MONTE CARLO, ANTITHETIC VARIATE, AND CONTROL VARIATE METHODS by Romaito Br Silalahi, Donny Citra Lesmana, Retno Budiarti

    Published 2023-06-01
    “…Compared to the other methods, control variate is the most effective and efficient in determining the value of double barrier knock-in option, based on the option value, relative error and computational time. …”
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  15. 535

    Determination of the main factors of the gross regional product level by econometric modeling methods for the totality of regions of the Russian Federation by Yu. S. Ivchenko

    Published 2019-12-01
    “…In the article, by constructing econometric models with a different set of factors, the most essential and statistically significant factors determining the level of gross regional product were identified.Materials and methods. …”
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  16. 536

    Motivation and stimulation of employment specialists in the sphere of information technologies by S. Bazhenov

    Published 2016-04-01
    “…We study the needs and motivations of IT professionals. A method for evaluating the effectiveness of labor specialists in the sphere of information technologies and offered rates for calculating the efficiency of workers, including factors: timeliness; the number of completed tasks; detected errors; the cost of bug fixes. …”
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  17. 537

    Definition of the Complex Refractive Index of an Etalon for Measuring the Reflection Coefficient by V.I. Shkaleto, G.I. Kopach, R.V. Zaitsev

    Published 2014-06-01
    “…The paper describes methods for determination of the complex refractive index of opaque objects by the measurement results of the reflection coefficients at two different angles of incidence. …”
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  18. 538

    Developing and validating a rapid, quantitative, and spectrophotometric analytical method for determining promethazine hydrochloride in its pure and pharmaceutical forms by Marwan Thaer Jalal

    Published 2025-07-01
    “…A rapid, easy, and sensitive spectrophotometric approach for determining trace quantities of promethazine hydrochloride (PZH) in aquatic solutions was illustrated. …”
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  19. 539

    Modification and validation of the test procedure for determination of sub-visible particulate matter in parenteral solutions, using the Coulter method by A. A. Voropaev, O. V. Fadeikina, D. S. Davydov, A. A. Movsesyants

    Published 2021-07-01
    “…Therefore, research is needed to find optimal test conditions for determination of sub-visible particulate matter by the Coulter method. …”
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  20. 540

    Development of the ELISA Test System for Quantitative Determination of IgG to the Varizella zoster virus in Human Serum and Assessment of its Diagnostic Efficiency by L. N. Lukhverchyk, G. L. Alatortseva, L. N. Nesterenko, V. Y. Kabargina, V. V. Dotsenko, I. I. Amiantova, O. B. Vylivannaya, A. V. Sidorov, A. V. Milovanova, O. S. Oksanich, S. Y. Konanykhina, V. V. Zverev

    Published 2022-01-01
    “…This problem can be solved using quantitative immunoassay methods. Aim. Development of an enzyme-linked immunosorbent assay for the concentration of class G immunoglobulins (AB) to Varicella zoster virus (VZV) determining and assessing its functional characteristics and diagnostic efficiency. …”
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