Development of the state secondary measurement standard and certified reference materials for composition on the basis of liquid and gas chromatography by Olga S. Shokhinaa, Maria Yu. Medvedevskikh, Maria P. Krashenininaa, Svetlana G. Makarova, Anatoliy I. Krylovb, Irina Yu. Tkachenkob, Alena Yu. Mikheeva

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Evolución escolar en Cantabria (1750 – 1850) by Gutiérrez, C. G.

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INVESTIGATION OF EFFICIENCY OF GRAY CAST IRON GRAPHITIZING MODIFICATION BY DISPERSION-FILLED CONSUMABLE PATTERN by I. A. Nebozhak, V. V. Sumenkova, O. I. Shynsky, V. D. Babyuk, E. A. Zhydkov

Subjects: “…approximation, consumable pattern, graphitizer, graphical interpretation, length of inclusions of flaked graphite, silicon concentration, silicon assimilation quotient, silicon, lost-foam casting (lfc-process), casting mold, casting specimen, mathematical treatment, material, matrix melt, modification, ingot, microstructure parameters, foam polystyrene, pearlite, flaked graphite, polynomial, gray cast iron, hardness, ferrite, ferrosilicon, functional relation, temper of functional relation, cementite, experimental data, empirical equation…”
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ABOUT THE UFA PERIOD IN THE HISTORY OF THE MOSCOW PETROLEUM INSTITUTE NAMED AFTER I.M. GUBKIN by Ildus G. Ibragimov, Oleg A. Baulin, Ferdinand Sh. Zabirov

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Determination of Reactive RF-Sputtering Parameters for Fabrication of SiOx Films With Specified Refractive Index, for Highly Reflective SiOx Distributed Bragg Reflector by Elnaz Afsharipour, Byoungyoul Park, Cyrus Shafai

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New archive documents about the conflict between kalmyks and kuban nogais in 1713–1714 (based on materials of the Russian state archive of ancient acts) by Kirill Stankov

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An Amorphous (Al_0.12Ga_0.88)₂O₃ Deep Ultraviolet Photodetector by Shu-Bai Liu, Shoou-Jinn Chang, Sheng-Po Chang, Chia-Hsun Chen

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Principles of transportation of donor organs and tissues for transplantation by O. Yu. Verba, B. I. Yaremin, K. K. Gubarev, R. P. Lavrinyuk, O. S. Pokrovskaya, K. V. Grozovskiy

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Surgical thrombectomy versus conservative treatment in cases of acute limb ischemia with COVID-19 pneumonia by A. M. Fahad, H. A. Alkhalidi, Y. Q. M. Altimimi

Subjects: “…therefore, it is the main causative factor for acute limb ischemia. aim. to compare the treatment outcome of two limb ischemic groups post covid-19 infection in a single center and detect at least which is better for the patients in the period of covid-19 pandemic. material and methods. here, in this study, we collect 26 patients and divided them into two groups, g1 (14) patients treated conservatively and g2 (12) patients treated with surgical thrombectomy. data were analyzed to look for the outcome of groups after 24 hours and 30 days. results. the successful rate of conservative treatment was 85,72% in g1, while it was 75% in g2. there were two amputations below the knee joint in each group. three patients died in both groups. conclusion. in conclusion, both conservative treatment and surgical thrombectomy have a comparable successful rate in the selected group of covid-19 patients.…”
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Development of the composition of the tablets "Cardiosten" using the method of mathematical planning of the experiment by O. S. Kukhtenko, Ye. V. Hladukh

Subjects: “…taking into account the application of the mathematical planning of the experiment. Materials and methods. Using the method of mathematical planning of the experiment (MPE)…”
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MODIFICATION OF BREAST CANCER CELLS' SENSITIVITY TO METFORMIN DUE TO CO-CULTIVATION WITH B. ANIMALIS by T.P. Kozak, O.O. Lykhova, P.A. Virych, V.F. Chekhun

Subjects: “…particularly bifidobacteria. the combined action of these factors may lead to unpredictable effects on the sensitivity of malignant cells to antitumor agents. aim. to investigate the effect of bifidobacterium animalis on the sensitivity of bc cells to the cytotoxic/cytostatic effects of metformin. materials and methods. the impact of b. animalis on gm in bc cells was determined by biochemical methods (glucose consumption and lactate production rate…”
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Dynamic single-photon emission computed tomography as a method of identification of multivessel coronary artery disease by A. V. Mochula, K. V. Zavadovsky, S. L. Andreev, Yu. B. Lishmanov

Subjects: “…objective. the aim of this study was to determine the informative value of dynamic tomoscintigraphy in detection of multivessel coronary artery disease (cad). material and methods. patients with multivessel cad (n= 16) and healthy volunteers (n= 9) underwent dynamic cardiac single photon emission computed tomography with 99mтс-mibi at rest and during pharmacological stress-test. processing of acquired results involved the formation of regions of interest from the cavity and the myocardium of the left ventricle used to create activity-time curves. coronary flow reserve index was defined as a quotient of two ratios of the mean counts from the myocardial region to the integral activity in the left ventricular cavity for the studies performed during pharmacological stress test and at rest. results. the mean values of coronary flow reserve index were 1.86 (1.59…”
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Prevalence of Dental Erosion among the Young Regular Swimmers in Kaunas, Lithuania by Andrius Zebrauskas, Ruta Birskute, Vita Maciulskiene

Subjects: “…the second largest city in Lithuania. Material and Methods: The study was designed as a cross-sectional survey…”
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APPLICATION OF ASSIGNMENT METHOD WITH SEVIMA EDLINK TO IMPROVE STUDENT'S DISCIPLINE AND MATHEMATICS LEARNING ACHIEVEMENT by Gst Ayu Mahayukti, I Gusti Putu Sudiarta, I Dewa Gede Limarta Yusadi Putra

Subjects: “…Due to the pandemic, teachers need to make breakthroughs in carrying out online learning by utilizing the right online learning media, one of which is the Sevima Edlink application, because Sevima EdLink is an application that can be accessed via a computer or Android, and is free and without installation.This study aims to improve students' achievement and discipline in learning mathematics through the application of the sevima edlink assignment method in online learning on matrix material and matrix transformation. This research is a classroom action research covering three cycles with four stages, namely planning, implementation, observation, and reflection. …”
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The content of some vasoactive humoral-metabolic factors in patients with cirrhosis and their participation in pathogenesis of comorbid syntropical damages of cardiovascular system by Abrahamovych M., Abrahamovych О., Farmaha M.

Subjects: “…Additionally we recorded the pathological interaction among vasoactive material. Unlike of the results in comparison group…”
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Functional State of the Thyroid Gland in Patients with Urticaria by Rudnyk T., Nadashkevіch O., Parashchuk B., Zaychenko Y.

Subjects: “…and the long-term duration of the last clinical remission. Materials and methods. 86 patients with chronic idiopathic urticaria (34 men and 52 women) aged 15-67 years were examined. …”
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Changes in the plasma level of plasminogen activator inhibitor-1 in patients with cranio-cerebral trauma depending on body weight and PAI-1 -675 4G/5G gene polymorphism by O. O. Potapov, O. P. Kmyta, O. O. Tsyndrenko, M. P. Khavro, T. V. Bereznyi, I. O. Karpeko

Subjects: “…To study the association between the plasma level of plasminogen activator inhibitor type-1 (PAI-1) and both body weight and PAI-1 -675 4G/5G gene polymorphism in patients with cranio-cerebral trauma (CCT) over the treatment course. Materials and methods. The hemostasis system state was analyzed in 200 patients with CCT by studying the association between the plasma level of PAI-1 and both body weight and -675 4G/5G polymorphism of the PAI-1 gene. …”
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