IMPROVING EFFICIENCY OF THE JET PUMP AT LOW COEFFICIENTS OF EJECTION by A. G. Butenko, S. Yu. Smik

“…The article considers methods of improving the operation of central ejectors at small ejection coefficients.The authors use mathematical simulation approach to study the particularities of kinematic structure of the flow in the mixing chamber of the central ejector operating with low ejection coefficients. …”
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Engineering method of calculation temperature fields and thermal stresses in the initial stage of radiation convection heating (cooling) body with variable heat transfer coefficien... by Gorbunov A.D., Uklеina S.V.

“…It is shown that the error in determining the surface temperature does not exceed 6%, and that the developed method can be used up to Fourier numbers Fo<0.4…”
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Velocity coefficient of tangential supply of subsonic centripetal turbine by A. A. Kishkin, A. V. Delkov, Yu. N. Shevchenko, M. U. Abdullaev

“…This work is devoted to the theoretical substantiation and method of experimental determination of the coefficient in the range of geometric and regime parameters of the tangential supply of a subsonic centripetal turbine.…”
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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

“…We compared three analytical methods for NH₄⁺ determination: distillation, ionometry, and spectrophotometry. …”
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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

“…Materials and methods. UV-spectrophotometric method of doxylamine quantitative determination in blood. …”
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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

“…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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Common inaccuracies and errors in the application of statistical methods in soil science by V. P. Samsonova, J. L. Meshalkina

“…Any statement about the type of relationship between features based on the correlation coefficient (Pearson or Spearman) is meaningless without specifying the number of replicates, since it is the number of replicates that determines the significance of the difference between the correlation coefficient and zero. …”
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Using machine learning methods to determine a typology of patients with HIV-HCV infection to be treated with antivirals. by Antonio Rivero-Juárez, David Guijo-Rubio, Francisco Tellez, Rosario Palacios, Dolores Merino, Juan Macías, Juan Carlos Fernández, Pedro Antonio Gutiérrez, Antonio Rivero, César Hervás-Martínez

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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

“…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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Theoretical basis of simulator-analyzer building-up for microwave amplifiers and oscillators by S. V. Savelkaev, S. V. Romasko, V. A. Litovchenko, N. V. Zarzhetskaya

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Damage Monitoring Method for Deep-Sea Net Cage Rope Structure Based on Tension Signal by YANG Mengjie, REN Haojie, REN Hao, XU Yuwang, ZHANG Mengmeng

“…Additionly, an online damage monitoring method based on rope tension signal is proposed. This method identifies the damaged rope by detecting an extremum step in the tension variation coefficient, and determines the specific damaged position by analyzing the proportion relationship between the tension change coefficient and the distance from the end to the damaged position. …”
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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

“…"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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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

“…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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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

“…The linearity of this method was calculated with a value of the coefficient of determination (R2) ≥ 0.999. …”
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High Performance Liquid Chromatography Method for Determination of Trace Amount of Ibutilide Fumarate in Pharmaceutical Manufacturing Environments by M. Satya Babu, Prathama S. Mainkar, Y. Anjaneyulu

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

“… 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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Determination of Crack Resistance of the Cover and Slide Glass by Indentation Method with the Visualization Using Atomic Force Microscopy by V. A. Lapitskaya, T. A. Kuznetsova, S. A. Chizhik

“…Crack resistance was determined by the Vickers pyramid indentation method. …”
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Development and Validation of a High‐Performance Liquid Chromatography Method for the Determination of Epoxyaurapten From Pomelo Peel by Hui Ni, Dongfeng Guo, Xue Li, Lijun Li, Yuanfan Yang, Xiping Du, Yang Hu, Shuyu Zhang, Feng Chen, Fan He

“…The effects of extraction solvent, liquid‐to‐material ratio, ultrasonic time, and extraction cycles on the extraction of epoxyaurapten from pomelo peel were investigated, and the optimal sample pretreatment conditions were determined to ensure the extraction efficiency. The results indicated a high degree of precision with a linear correlation coefficient of 0.9999. …”
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A Validated RP HPLC-PAD Method for the Determination of Hederacoside C in Ivy-Thyme Cough Syrup by Ayman Khdair, Mohammad K. Mohammad, Khaled Tawaha, Eman Al-Hamarsheh, Hatim S. AlKhatib, Bashar Al-khalidi, Yasser Bustanji, Samer Najjar, Mohammad Hudaib

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Establishment of QuEChERS-UPLC-MS/MS method to determine three kinds of ochratoxins in coffee by GAO Yunkai, CHEN Xiaomei, CHEN Chunqian, ZHOU Lingyu, DENG Yinglin, YIN Qingchun

“…<b>Objective：</b> A new method was developed for the simultaneous determination of three kinds of ochratoxins in coffee by ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) combined with QuEChERS pretreatment. …”
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