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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Reaeration Coefficient Empirical Equation Selection for Water Quality Modeling in Surface Waterbodies: An Integrated Numerical-Modeling-Based Technique with Field Case Study by Balsam J. M. Al-Saadi, Hussein A. M. Al-Zubaidi

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

“…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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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

“…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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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

“…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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Development and validation of an HPLC-DAD analytical method for quantitative and simultaneous determination of cefoperazone and prednisolone in intramammary ointment by Patrícia Espinosa dos Santos, Jefferson Annunciatto, Teófilo Fernando Mazon Cardoso, Marcos Serrou do Amaral, Nájla Mohamad Kassab

“…The method was applied in intramammary ointments, showing linearity, for CPZ, from 0.25 to 25 μg mL-1 (r=0.9999); and, for PRED, from 0.75 to 30 μg mL-1 (r=0.9997), with low limits of detection and quantification, precision with coefficients of variation less than 2%, in accuracy, presented recovery close to 100% for both drugs, in addition to demonstrating their robustness by the Youden test, which evaluated the effects and concluded that the altered parameters in the test were not sufficient to change the values obtained in the determinations. …”
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Method for discriminator curve synthesis of angular systems of multi-channel radars by V. M. Artemiev, A. O. Naumov

“…The objective of the study was to develop a method for finding the values of optimal weight coefficients for obtaining the desired parameters of the discriminator curve with an instantaneous amplitude comparison of signals. …”
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Precursor sticking coefficient determination from indented deposits fabricated by electron beam induced deposition by Alexander Kuprava, Michael Huth

“…We employ the method to determine the precursor sticking coefficient for bis(benzene)chromium, Cr(C6H6)2, and trimethyl(methylcyclopentadienyl)platinum(IV), Me3CpPtMe, and find a value of about 10−2 for both precursors, which is substantially smaller than the sticking coefficients previously assumed for Me3CpPtMe (1.0). …”
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Determination of an Unknown Coefficient in the Third Order Pseudoparabolic Equation with Non-Self-Adjoint Boundary Conditions by Yashar T. Mehraliyev, Gulshan Kh. Shafiyeva

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Research on MRI Gradient Coil Magnetic Field Induced Eddy Current Method by Xiaotao ZHANG, Yicheng LI, Zhanping ZHENG, Mingke WANG, Like FENG, Congbo LI

“…Only the field value of the target area needs to be measured, and the spherical harmonic coefficients obtained after data processing are used to determine the magnetic field performance of the gradient coil. …”
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Label-free determination of diffusion coefficients at the nanoscale through modelling of the Surface Plasmon Resonance signal. by Gabriele Antonio Zingale, Irene Pandino, Damiano Calcagno, Maria Luisa Perina, Nunzio Tuccitto, Giuseppe Grasso

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Determination of the effective thermal diffusivity coefficient of the charge in industrial Acheson furnaces for silicon carbide production by I.L. Shylovich, K.O. Shumyvoda

“…The values of the effective thermal diffusivity coefficient of the charge, consisting of a mixture of sand (SiO2) and petroleum coke (C), were determined for a specific range of operating temperatures. …”
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DETERMINATION OF THE OPTIMUM DOSAGE OF FOOD ADDITIVE «SELEX» FOR FUNCTIONAL BAKERY GOODS PRODUCTION by Naumova N.L.

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Application of NMR Method to Assess the Efficiency of Enhanced Oil Recovery Measures by N. K. Dvoyashkin, D. L. Melnikova, D. S. Ivanov, A. S. Aleksandrov, V. D. Skirda, K. D. Shumatbayev, A. D. Kurbanov

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Deterministic Calculation Method for Continuous-energy Neutron Transport Equation in No-resonance Energy-range by LIU Haopo, LI Yunzhao, WU Hongchun, CAO Liangzhi

“…In analyzing the power density distribution within the core of a nuclear reactor, it is necessary to employ numerical methods to solve the neutron transport equation and obtain the neutron flux density distribution. …”

Controllability-Oriented Method to Improve Small-Signal Response of Virtual Synchronous Generators by Antonija Šumiga, Boštjan Polajžer, Jožef Ritonja, Peter Kitak

“…This paper presents a method for optimizing the inertia constants and damping coefficients of interconnected virtual synchronous generators (VSGs) using a genetic algorithm. …”
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Enhancement Optical Characterized of Tin Oxide in Polymer Polyvinyl alcohol Colloid Prepared by Laser Ablation Method by Nadheer Jassim Mohammed, Zahraa Sabah Rasheed

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The effect of the method of joining layers in two-layer fabrics on their physical and mechanical properties by Katsiarina S. Mileeva

“…Filling drawings of these weaves are constructed, their coefficient of connectivity is determined. Testing of materials according to physical and mechanical properties was carried out in accordance with standard methods, resulting in the values of breaking load, tensile elongation, abrasion resistance, fabric thickness, breathability and shrinkage during the final finishing being determined. …”
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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

“…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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A Framework to Estimate Local Atmospheric Densities With Reduced Drag‐Coefficient Biases by Vishal Ray, Daniel J. Scheeres, Suood Alnaqbi, W. Kent Tobiska, Siamak G. Hesar

“…But densities estimated using satellite tracking data are always uncertain up to the drag‐coefficient assumed in the inversion method. This work develops a new framework to simultaneously estimate the density and drag‐coefficient for satellites with a time‐varying attitude. …”
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