bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Effect of Hesperidin on Laboratory Parameters of Patients with COVID 19: A Preliminary Report of a Clinical Trial Study
Authors: Jahangirifard Alireza , Mirtajani Seyed Bashir , Karimzadeh Mani , Forouzmehr Masoud , Kiani Arda , Moradi Mahtab , Soleimani Sanaz , Bezadmoghadam Mohammadhossein , Abedini Atefeh 
Published: June 2022

Background: Hesperidin is a secondary metabolite of the flavonoid group. Due to its antioxidant, anti-inflammatory and anti-viral properties, it can be helpful as a treatment option for patients with COVID 19.
Methods: This study was conducted as a clinical trial in Masih Daneshvari Hospital in Tehran. After providing complete explanations and obtaining written consent, patients with new coronavirus (COVID-19) were included in the study if they met the inclusion criteria. 20 patients with the new coronavirus (COVID-19) were included in the study. Patients were then randomly divided into hesperidin and control groups. Patients in the hesperidin group received 1 mg of hesperidin orally intravenously every 6 hours for 5 days, whereas in the control group, they did not. Then, the desired variables were measured during the research period. Patients were monitored for adverse drug reactions based on clinical symptoms and signs. The results were evaluated with regard to the design of the questionnaire and its completion using t-test and SPSS16 software.
Results: Patients with equal gender ratio were studied and diabetes mellitus with a prevalence of 60% had the highest prevalence among patients. On the other hand, 85% of these patients presented with bilateral lung involvement. Using hesperidin decreased lymphocytes, CRP, ESR, LDH, D-dimer, and IL-6 and increased WBC, Hb and Plt. None of the mentioned changes were significant (p>0.05).
Conclusion: Utilizing hesperidin could not cause significant changes in the level of immunological and inflammatory factors in patients with COVID 19.
Celiac Disease Seropositivity in Dilated Cardiomyopathy Patients and Correlation with Ejection Fraction
Authors: Rashidinia Ali , Bozorgi Ali , Abdollahi Alireza , Naserghandi Alvand , Ataeinia Bahar , Allameh Seyed Farshad 
Published: June 2022

Background: Recent evidence suggests a connection between celiac disease and dilated cardiomyopathy. Herein, we serologically screened for celiac in dilated cardiomyopathy patients and investigated its correlation with ejection fraction.
Methods: We selected 123 cardiomyopathy patients. Patients were screened for celiac, using anti-tissue transglutaminase (ATA), anti-gliadin (AGA), and anti-endomysial (EMA) immunoglobulin type A (IgA) antibodies. Total IgA levels were also measured.
Results: Of 123 patients, 3 were EMA positive (2.4%), 4 were AGA positive (3.3%) and 5 were ATA positive (4.1%). EMA positive patients had significantly lower EF values compared to EMA negative patients (35±5 vs. 46.52±9.21, p-value: 0.034). Similar results were observed for AGA (32.5±14.34 vs. 46.7±8.8, p-value: 0.002), but not for either ATA positivity (40±10 vs. 46.5±9.21, p-value: 0.126) or IgA deficiency (50±5 vs. 46.14±9.37, p-value: 0.480). No significant difference was observed in the age and gender of seropositive patients compared to seronegative.
Conclusion: We observed a higher prevalence of celiac seropositivity among dilated cardiomyopathy patients compared to the general population. EMA and AGA positive patients had significantly lower ejection fractions compared to their negative counterparts.
Incidence of COVID-19 in Health Care Personnel in a Tertiary Hospital in Iran
Authors: Montazeri Mahnaz , Kafan Samira , Pazoki Marzieh , Danandeh Khashayar , Majidi Fazeleh , Alavi Firoozeh , Babaei Soraya , Hadadi Azar 
Published: June 2022

Background: Since the initiation of the new coronavirus (COVID-19) in February 2020 in Wuhan, the Health Care System (HCS) has tolerated a lot of morbidities and mortalities all around the world. While the COVID -19 is spreading out the whole world, HCS carries almost all the burden as the first line. However, countries like Iran suffer from a lack of infected Health Care Workers (HCW) population data and statistics, especially the major hospitals for COVID-19 referrals.
Methods: In this single-center cross sectional study, we studied the healthcare personnel infected by COVID-19, from February 2020 to August 2020, in a major tertiary hospital of Tehran, Iran.
Results: Of total 1595 HCW working in Sina hospital, 389 (24%) with the mean age of 35.43 ± 8.2 years were infected by COVID-19, almost one fourth. 238 (61.2%) were women, though 92.5% of the population used Personal Protective Equipment (PPE). 140 (36%) of them were personnel of the wards assigned to the COVID-19, Personnel went on sick leave for 7.76 ± 4.64 days. 51(13.1%) personnel had an exacerbation of symptoms, and only one of the personnel experienced COVID-19 almost twice in four months.
Conclusion: COVID-19 infection risk is considered to be very low for HCWs in case suitable PPE and social distancing are regarded. In our study, more than 92% of the infected personnel utilized PPE, which indicates that they might have failed to use PPE properly or might not have taken hand-hygienic precautions well. It is necessary to limit working hours and prevent excessive workload so that the staff could adhere more to hygienic precautions in hospitals or in society.
The differences in formative assessment evaluation between teachers and students – a non- parametric analysis
Authors: Thaçi Lulzim , Sopi Xhevat 
Published: June 2022

This study aims to assess the impact of the application of formative assessment on student success in the Republic of Kosovo and to highlight the differences in assessment between teachers and students. The research included 217 teachers and 245 students from 34 lower secondary schools, from different cities and villages of the Republic of Kosovo. Separate questionnaires were prepared for both groups, while 5-point Likert questions were used to measure the evaluation of the effects of formative assessment. The non-parametric one-sample Wilcoxon signed rank test and Mann–Whitney U test methods were used to analyse the results and test the hypothesis. The results of the Wilcoxon test with 95% confidence level show that both teachers and students evaluate positively the effects of formative assessment, while the Mann–Whitney U test results show that for particular aspects there are significant differences in assessment between these two groups for the formative assessment method.

Keywords: Formative assessment, learning outcomes, teaching practice, curriculum, non-parametric methods, Kosovo.
Methodology for preparing biology students for environmental and local study activities
Authors: Umirzakova Nagima , Amanbayeva Makhabbat , Maimatayeva Assiya , Childebayev Zhumadil , Yessenturova Symbat , Zhumagulova Kalampyr 
Published: June 2022

The current situation in education is characterized by an increased role for the environmental dimension. The purpose of our research is to develop an experimental verification and an effective methodology for shaping the readiness of students of biology, for environmental and local study activities. The research involved theoretical and experimental teaching methods. The participants for the experiment consisted of 105 students in the experimental group and 98 students in the control group. As a result of experimental training, it turned out that we developed a model of the methodology for the formation of environmental and local study activities in the training of biologist students, in the system of advanced training of biologist specialists. The article has scientific interest to teachers and researchers of pedagogical universities who want to ensure an effective educational process.

Keywords: Biologist; environment; Kazakhstan; regional component; specialist, teacher.
Components of image competencies of future physical education teachers
Authors: Serikbaykyzy Yerdanova Gulshirin , Nurbolatovich Sayat Ryskaliyev , Zhubatyrkizy Otaraly Svetlana , Zhanbolat Bozhig , Zhandos Abishev 
Published: June 2022

The purpose of the article is to study the state of the problem of the development of image-related competencies of future physical education teachers in psychological and pedagogical literature. The article analyses the development of the problem of image-related competencies of future physical education teachers by examining philosophical, psychological, and pedagogical literature, the regulatory documents, and analytical materials of the Ministry of Education and Science of Kazakhstan, and using the synthesis and interpretation of scientific data, and experimental research with 139 participants. The results of the ascertaining experiment showed that future physical education teachers are constantly in need of the social approval of their actions. The image of a physical education teacher is also understood as a purposefully developed image, which is stereotypical and has an emotional and psychological impact on students, colleagues, and the social environment.

Keywords: Diagnostics; development; Empathy; Image-related competencies; physical education; teachers.
Analisis Performansi Dua Sistem Operasi Server CentOS 8 dan Oracle Linux 8 Menggunakan Metode Levene Dengan SysBench
Authors: Tenaya Gde Andrayuga Pramaditha , Putra I Dewa Putu Gede Wiyata , Ekayana Anak Agung Gde , Desnanjaya I Gusti Made Ngurah , Ariana Anak Agung Gede Bagus 
Published: June 2022

CentOS 8 is a popular operating system for servers, but will discontinue. The Oracle Linux 8 operating system was chosen as a replacement because this operating system has many similarities with CentOS 8 and is distributed by the same party, namely RHEL (Red Hat Enterprise Linux). This study aims to compare the stability of the two server operating systems, as well as provide a reference for operating system users to choose a server operating system. CPU and memory tests were performed using SysBench software with the same number of threads, which were then recorded and compared. Cacti software is also used to compare CPU and memory performance in real time. The results showed that Oracle Linux 8 and CentOS 8 are two operating systems with different variances, although the kernels used by both operating systems are the same. Oracle Linux 8 can serve clients faster than CentOS 8 with a difference of 0.26 seconds.
Pengembangan bahan ajar modul berbasis flipbook pada mata peajaran komputer akuntansi transaksi perusahaan dagang guna mendukung proses pembelajaran peserta didik XII AKL 1 di SMKN 1 Jombang
Authors: Nisfu Syabana Yusi , Susilowibowo Joni 
Published: June 2022

Development research, whose purpose is to form new products. This research model in the form of 4D development includes Define, Design, Develope, and Disseminate by Thiagarajan, Dorothy S.Semmel &Melvyn I. Sommel. But at the dissemination stage (Dissemination) researchers have limited capabilities when carrying out the spread. Due to time and cost constraints. The subjects of this study include linguists, material experts, and graphicists with the type of method chosen is qualitative and quantitative. Quantitative data in the form of validity sheets that have been scored by validators in the form of percentages and qualitative data in the form of notes based on the product study of the study that is then described for improvement. Research instruments in the form of open and closed questionnaires containing research sheets and validity test sheets from material experts, linguistics, graffiti, and validators. And compiled based on the feasibility of teaching materials by BSNP (2014). Based on the study sheet produces analysis with qualitative descriptive while validation sheet produces analysis with quantitative descriptive. Techniques for data analysis are qualitative and quantitative. Descriptiveikualitative contains analysis sheets to study the stuffing of suggestions and criticisms from expert lecturers as a completeer of flipbook-based modules that have been developed. While descriptive quantitative contains validity sheets from experts. The main purpose of this study is to analyze how the development process and feasibility in this development researchers concluded that the development of flipbook-based module teaching materials in computer subjects accounting transactions of trading companies is declared feasible because it obtained 86%.
Modeling of the process of heating of chip‑powder dispersions of ferrous metals in the pass‑through muffle furnace of hot briquetting. Message 1
Authors: Dyakonov O. M. , Litvinko A. A. , Sereda V. Yu. 
Published: June 2022

The description of the device and principle of operation of the continuous muffle furnace for hot briquetting of chip‑powder dispersions of ferrous metals is given. A distinctive feature of this device is the presence of two systems of gas‑flame and induction heating, as a result of which the achievement of the specified charge heating temperature is guaranteed with the complete removal of the liquid phase. The oil component of the coolant is used to create a protective hydrocarbon atmosphere that provides non‑oxidizing heating of the metal, as well as to obtain a carbon coating, which, in addition to protective functions, acts as a lubricant in the hot briquetting process. Subsequent combustion of oil vapors in the furnace leads to significant savings in natural gas. A furnace built according to this principle has the smallest dimensions and the highest technical and economic characteristics.The simulation of the chip heating process in the zone of loading into the furnace is carried out. The dependences of the temperature of the chips at the outlet of the screw feeder on the temperature of the flue gases at the inlet for the mass fraction of coolant in the chips of 10 % and various fractions of oil are obtained. It has been established that during the heating of the chips in the loading zone, phase transformations of the coolant do not occur, the charge heating temperature does not exceed 100 °C.
The effect of ion‑plasma nitriding on the enduring quality and the nature of changes in the surface roughness of titanium alloys VT1‑0, VT6 and OT4‑1
Authors: Drobov A. N. , Bosyakov M. N. , Pobol I. L 
Published: June 2022

The effect of the temperature of the ion‑plasma nitriding process on the enduring quality of the resulting hardened layers on titanium VT1‑0 and titanium alloys VT6 and OT4‑1 and the effect of ion‑plasma nitriding on the change in the Ra parameter of the surface roughness of titanium samples is investigated. It is defined that ion‑plasma nitriding leads to a significant increase in the enduring quality of the titanium alloys under study. The depth of the enduring quality groove in untreated samples of titanium VT1‑0, alloys VT6, OT4‑1 was 11, 7 and 10 microns, respectively, whereas in samples after ion‑plasma nitriding, the wear groove had a depth of 1.9, 0.9, 2.1 microns. It was revealed that when the initial roughness of the processed samples is more than Ra 0.1 microns after ion nitriding, the roughness index Ra, one of the key components of surface quality, decreases.
Soil Liquefaction Problems in the Foundations Hydraulic Structures
Authors: Morgunov K. P. , Kolosov M. A. 
Published: June 2022

An analysis of the probability and conditions for the occurrence of soil liquefaction at the base and in the vicinity of hydraulic structures is presented in the paper. As a rule, hydraulic structures are erected in the valleys of watercourses, the structure of the soil in which contributes to the occurrence of liquefaction processes. These soils are fine-grained, non-cohesive, usually consisting of fine- and medium-grained or silty sands, sandy loams, interspersed with layers of loams. Massifs under pressure hydraulic structures are quite water-saturated. Soil liquefaction occurs as a result of the destruction of structural bonds between particles in water-saturated dispersed soils under the action of stresses of various types. An external dynamic or static load applied to a water-saturated massif composed of weak, finely dispersed soils can lead to a complete or partial loss of soil bearing capacity and its transition to a fluid state. The magnitude of soil resistance to shear is determined by the degree of its water saturation; at a moisture content of about 20 %, the angle of repose of sandy soils is significantly reduced. The restoration of the strength properties of soils is prevented by the pore water pressure, the process of compaction (consolidation) of the soil mass occurs after the water is squeezed out of the pores, the flow time of which depends on the filtration properties of the massif. Liquefaction of soils leads to a disruption in the normal functioning of a hydraulic structure, the creation of emergency situations. The paper provides examples of accidents at hydraulic structures in Russia caused by liquefaction phenomena. It is noted that the main directions of protecting the structures of hydraulic structures from dangerous liquefaction are to prevent the possibility of liquefaction and the reduction of its harmful effects. In this regard, several methods are considered – compaction and strengthening of soils at the base of structures; filtering surcharge device using geotextiles and geogrids; creation of an effective drainage system.
Improvement of Calculation Technique for Flexible Orthotropic Plates on Elastic Base. Part 1: Calculation Theory
Authors: Kozunova O. V. 
Published: June 2022

The paper considers a rectangular orthotropic insulated slab on an elastic foundation, modeled by an elastic homogeneous isotropic layer rigidly connected to a non-deformable foundation. Elastic and nonlinear calculations of this plate opening. The calculation of a flexible orthotropic slab on an elastic foundation in a nonlinear formulation is carried out iteratively by the method of B. N. Zhemochkin. To determine the coefficients of the canonical equations and free terms, a mixed method of structural mechanics was used. The deflections of a slab with a pinched normal in the main system of the mixed method due to the action of a concentrated force are determined by the Ritz method when the deflections are represented as a power polynomial in a new original expression, which is proposed by the author for the first time in the studies. This expression satisfies not only the boundary conditions of the pinched slab in terms of displacements, but also the biharmonic equation. In nonlinear calculations, when finding the variable (secant) stiffness for the Zhemochkin section, at each iteration, the “stiffness – curvature” dependence is used for each of the X and Y directions, approximated by a nonlinear function, the nature of the dependence of which graphically indicates the nonlinear-elastic operation of the orthotropic plate and its deformation taking into account crack formation and crack opening. The algorithm for the above solution is implemented using the Wolfram Mathematica 11.3 computer program.
Electromagnetic Waves in Maxwell’s Theory
Authors: Nevdakh V. V. 
Published: June 2022

The description of a plane traveling electromagnetic wave existing in the physical literature by identical solutions of wave equations for the strengths of electric and magnetic fields is physically incorrect, since such solutions contradict the physical meaning of Maxwell’s equations and violate the energy conservation law. The paper gives a physically correct description of electromagnetic waves in the framework of Maxwell’s theory. New solutions of Maxwell’s wave equations for traveling electromagnetic wave are proposed, in which the strength of its electric and magnetic components change in time with shifts of a quarter of the period and a quarter of the wavelength along coordinate. The solutions describe a traveling electromagnetic wave, in which the energy of the electrical component is sequentially converted into the energy of the magnetic component and vice versa; the total energy density of the lossless wave remains constant in space at any time; the mutual orientation of the intensity vectors of the electric, magnetic fields and phase velocity changes from a left-handed three to a right-handed three every quarter of the wavelength; the energy flux density of the traveling wave is described by the Umov vector. It is shown that the formation of a standing electromagnetic wave does not require the loss of half a wave of one of the components of the wave reflected at the interface between the media. In a standing wave, the total energy density remains constant in time, but it is a function of coordinates: there are points in space where the total energy density of the wave at any time is zero – these are nodes, and there are points where it has a maximum value – these are antinodes. Due to the inhomogeneity of the distribution of the total energy density of the wave in space, a standing electromagnetic wave cannot be considered as a harmonic oscillator, but a lossless traveling electromagnetic wave can.
Economic Fundamentals for Development of International Road Freight Transportation Logistics in the Republic of Belarus under Coronavirus Pandemic
Authors: Ivut R. B. , Zinevich A. S. 
Published: June 2022

The paper considers an issue of international logistics development in Belarus under world coronavirus COVID-19 pandemic. As a result of analytical reviewing of the up-to-date scientific literature on the problem under study, the expediency is stated for highlighting the logistics of international road freight transportation as an independent area of theoretical research and practical activity. Further development of international road freight transportation logistics in the Republic of Belarus requires a complex economic analysis of the present state and dynamics of the international road freight transportation market, which is the main purpose of the present publication. The paper contains the results of the analysis of the market for international and transit freight road transportation. Separately the paper points out the dynamics of transit goods transportation segment in this market in response to the reorientation of international freight flows. Interconnection is shown between the volume indices of international road freight transit through the territory of Belarus and the dynamics of goods import to the Russian Federation from the EU countries. For the first time a proposal is given to use the methodological tools of systemmatrix diagnostic analysis for investigation of the macroeconomic development process of international road freight transit logistics. The author’s set of initial parameters for the analysis has been formed, and its results are presented on the basis of the data of the State statistical reporting form for 2019–2020. A suggestion is given for joint usage of system-matrix diagnostic tools in combination with author’s methodology for assessing the effectiveness of transit (international) freight transportation while evaluating the competitiveness of economic entities in the industry. The most typical trends of the market development in the short term are stated, taking into account the more complicated market conditions.