A Computer Software Application for the Design and Simulation of Unguided Rockets by Krzysztof MOTYL, Filip MUSIAŁEK

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Mathematical Modeling of Load Capacity and Durability of Metal-Polymeric Bearings with a Composite Bushing Based on Polyamides, Polytetrafluoroethylenes, Polyetheretherketones, or... by Myron Czerniec, Jerzy Czerniec, Jarosław Zubrzycki

“…The durability of a mechanical bearing depended not only on the contact pressure but also on the polymer’s wear resistance, Young’s modulus, and friction coefficient. This study determined the quantitative and qualitative effects of these factors on the maximum contact pressures and bearing durability. …”
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Dynamics of ultrafast laser introduced breakdown in water and ethanol by Lan Su, Lan Su, Xin Qiu, Rui Guo, Youbo Jing, Chaosan Yang, Chaosan Yang, Shuhui Liu

“…Experimental results indicate that under the same laser energy, the initial velocity of the shock wave generated in ethanol is slightly lower than that in water. This is mainly determined by liquid properties (viscosity coefficient, density, molecular weight, breakdown threshold). …”
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Determining the Levels of Four Phenylethanoid Glycosides and Five Triterpene Acids in Liuwei Dihuang Capsule Using Solid Phase Extraction with HPLC-UV by Yong Zhang, Xian-Liang Zou, Yong-Li Wang, Lu Gao, Gui-Xin Chou

“…The method had satisfactory efficiency and reproducibility with recovery rates ranging from 91.6 to 99.3% with a relative standard deviation below 1.5%. …”
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Spectrophotometric determination of Folic acid (B9) by oxidative Coupling Reaction with 4-nitro-aniline by Rasha Saad Saber Al Tikrity, Asmaa Ahmed Mohammed Al Rashidy

“… Development of an easy, inexpensive, fast and selective spectrophotometric method for the determination of Folic Acid  (FA) by its reaction with 4-nitro aniline reagent, with good sensitivity, as an oxidative coupling method in the presence of Potassium permanganate solution, and it was found that the concentrations that were agreement with Beer-Lambert’s law at the wavelength of 374 nm ranged between 1- 21 µg/ml of folic acid solution, and a deviation from Beer’s law occurs at a concentration higher than 21 µg/mL, gave a linear coefficient and correlation coefficient its value is 0.9994, 0.9996, respectively, While the value of the molar absorption coefficient  12138.5 L/mol.cm and Sandel's sensitivity  0.0363 gm/cm2  with  the limits of qualitative and quantitative detection 0.103 and 0.363 μg / ml-1, respectively. …”
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Determination of Inorganic Elements in the Rhizome of Paris polyphylla Smith Var. chinensis (Franch.) Hara by Using Inductively Coupled Plasma Mass Spectrometry by Tiezhu Chen, Juan Lin, Jun Yang, Yina Tang, Chunmei Zhang, Tao Zhang, Feiyan Wen, Qingmao Fang, Hao Zhang

“…The analytical method was validated by measuring several parameters including linearity, correlation coefficient, limit of detection (LOD), limit of quantification (LOQ), and recovery. …”
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In Situ Determination of the Transport Properties of Near-Surface Concrete Using AC Impedance Spectroscopy Techniques by Lipeng Wu, Peng Dai, Yong Li

“…In this paper, an in situ method for chloride ion diffusion coefficient determination is proposed based on the relationship between the alternating current impedance spectroscopy parameters and the chloride ion diffusion coefficient. …”
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Validation and Application of Screen-Printed Microchip for Potentiometric Determination of Metformin Hydrochloride in Tablet Dosage Form by Mohammed Alqarni, Abdullah A. Alshehri, Hassan Arida

“…For the first time, herein, this method of analysis has been validated according to IUPAC recommendations and successfully applied in the determination of metformin drug in some dosage form. …”
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Rapid simultaneous determination of organophosphorus pesticides in human serum and urine by liquid chromatography-mass spectrometry by Zlatković Milica, Jovanović Miodrag, Đorđević Dragana, Vučinić Slavica

“…Intra- and interassay precision and accuracy were satisfactory for all of the pesticides analyzed. Conclusion. The method of liquid chromatography - mass spectrometry is simple, accurate, and useful for the determination of organophosphorus pesticides in both clinical and forensic toxicology.…”
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Prognostic value of serum zinc concentration determination in young children during the course of infectious diarrhea by V. V. Pechuhina, O. V. Usachova

“…Serum Zn levels were determined by the colorimetric method. Non-parametric statistical methods were used to process the obtained data, since the distribution of indicators did not correspond to the normal one. …”
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Spectrophotometric Determination of N-Acetyl-L-Cysteine and N-(2-Mercaptopropionyl)-Glycine in Pharmaceutical Preparations by Lea Kukoc-Modun, Njegomir Radić

“…A simple spectrophotometric method for the determination of N-acetyl-L-cysteine (NAC) and N-(2-mercaptopropionyl)glycine (MPG) in pharmaceutical preparations was developed, validated, and used. …”
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High-Performance Liquid Chromatography with DAD Detection for the Determination of Cannabinoids in Commercial Veterinary CBD Oil by Zehra Hajrulai-Musliu, Elizabeta Dimitreska Stojkovikj, Dimitar Gusheski, Dea Musliu, Daniel Velkovski

“…It was determined to be linear, with a correlation coefficient (R²) > 0.999. …”
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Determination of Thermal Conductivity of Nano-ceramic Thermal Insulation Coating on the Surface of a Heat Pipe by Vafaeva Khristina Maksudovna, Pavlov Mikhail Vasilyevich, Karpov Denis Fedorovich, Mittal Sachin, Kalpana Kilaru, Kataria Ansh, Joshi Ankita, Visweswari Tamminana, Islam Raisul

“…The research aim is to determine the thermal conductivity coefficient of liquid nano-ceramic thermal insulation coating on the surface of the pipeline. …”
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The validation of urea determination in saliva using optical urea biosensor with p-dimethylaminobenzaldehyde (DMAB) reagent by TEUKU ALDIANSYAH, EKA SAFITRI, BINAWATI GINTING, NAZARUDDIN NAZARUDDIN, KHAIRI SUHUD, SITTI SALEHA, NURHAYATI NURHAYATI, SALSABILLA LATANSA NAZARUDDIN, MUHAMMAD RIDHO AFIFI, NURHAIDA NURHAIDA

“…The validation of urea determination in saliva using the biosensor method and the p-dimethylaminobenzaldehyde (DMAB) method has been successfully conducted. …”
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Investigation of Spatio-Temporal Simulation of Mining Subsidence and Its Determinants Utilizing the RF-CA Model by Jikun Xu, Chaode Yan, Baowei Zhang, Xuanchi Chen, Xu Yan, Rongxing Wang, Binhang Yu, Muhammad Waseem Boota

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Determination of Phytotechnological Parameters of the Dense Extract from Peach (<i>Persica vulgaris</i>) Leaves by E. I. Molokhova, L. V. Ivantsova, V. D. Belonogova

“…The study presents the analysis of phytotechnological parameters of peach leaves, a rational extraction method is justified – maceration at heating with periodic stirring, and extraction conditions are determined; providing maximum yield of active substances: temperature – 70 °С in 40 min, extractant – alcohol, ethyl solution 70 %, degree of raw material grinding – 2 mm, raw material : extractant ratio (1 : 10).…”
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Determination of advantame in fermented milk using Captiva EMR-Lipid combined with UHPLC-MS/MS by HUANG Huimin, YANG Guang, DUAN Hu, LIU Ning, XIE Jiangna

“…The study established a detection method for determining the content of advantame in fermented milk by combining an enhanced lipid removal purification technology (Captiva EMR-Lipid) with ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). …”
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MECHANICS OF CONTACT INTERACTION BETWEEN PROPELLER SHAFT AND STERN BEARING UNDER THE TRANSVERSE VIBRATIONS by G. A. Kushner, V. A. Mamontov, A. A. Khalyavkin

“…In order to improve the accuracy of calculations in the design of ship shafting systems, the problem was to determine the stiffness coefficient of the stern bearing material taking into account its geometric dimensions.Methods. …”
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Determinants of the Regular Physical Activity among Employees of Healthcare Network: Application of Health Belief Model by Reza Jorvand, Mahmoud Tavousi, Fazlollah Ghofranipour

“…Instruments & Methods: This descriptive-analytical cross sectional study was conducted on employees working in a healthcare network affiliated to Ilam University of Medical Sciences in 2017. 163 subjects were selected by simple random sampling method. …”
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Determination of Sulfur in Fly Ash by High Frequency Combustion Infrared Absorption Spectroscopy with Matrix Matching by Weiting CAI, Junpeng SONG, Minghui ZHANG, Anli WANG, Wenna RONG, Bei LI

“…The sulfur content in fly ash was determined by the high frequency combustion infrared absorption method. …”
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