bluuebunny/crossref_metadata_2025 huggingface dataset:
Experimental and theoretical correlations in (Z)-C-aryl-N-methylnitrones
Authors: Kula Karolina , Bierczak Paulina , Miernik Klaudia , Synkiewicz-Musialska Beata , Gaurav Gajendra Kumar
Published: November 2024

Nitrones are an interesting group of organic compounds due to their spin-trapping properties. These chemical compounds are also useful building blocks via cycloaddition reactions. In this work, a comprehensive study about correlation of selected parameters come from quantum chemical and experimental studies, namely 1H chemical shifts, IR absorption bands and UV-Vis maximum absorptions as well as reactivity descriptors such as global electrophilicity and nucleophilicity with substituent constants of Hammett, Taft, Brown and Okamoto's as well as Exner for para substituent analogues of (Z)-C-phenyl-N-methylnitrones have been study. Based on presented results it should be noted that tested models of substituent constants correlate in a satisfactory way with computational data. The opposite conclusion is observed for spectral data derived from analysis performed for synthesized nitrones. The obtained results constitute a useful element for future research on reaction mechanisms involving the tested nitrones.
The synthesis of pyrazole derivatives from hydrazone using Amberlyst A26 resin under ultrasonic radiation
Authors: Vane Vilas , Jadhava Suresh
Published: November 2024

Pyrazoles are highly versatile and find applications in various industries including chemicals, pharmaceuticals, polymers, medications, and agriculture. Pyrazoles and their analogues exhibit a range of biological activities, including anti-inflammatory, anti-tuberculosis, antibacterial, antifungal, anti-cancer, and anti-diabetic effects. In this context, this investigation focuses on the synthesis of pyrazoles containing heterocyclic components using Amberlite resin in reactions with ultrasonic irradiation. Synthesized pyrazoles containing heterocyclic components are intermediates of the apixaban API. Some pyrazole derivatives are key impurities of the apixaban API, which is synthesized by a multistep chemical conversion and has been reported previously. The use of the heterogeneous Amberlyst resin, which acts as a reusable catalyst and is gentle on reactions, allows for a more sustainable solution that reduces costs, accelerates reactions, and shortens reaction times. The procedures for using Amberlyst resin under ultrasonic irradiation to synthesize pyrazole derivatives are cost-effective, energy-efficient, and environmentally friendly for chemical synthesis and material preparation. They also simplify workups and produce quality and yields comparable to or better than existing methods.
Integrated computer aided methods to designing potent α-Glucosidase inhibitors based on quinoline scaffold derivative
Authors: Khaldan Ayoub , Bouamrane Soukaina , El-Mernissi Reda , Alaqarbeh Marwa , Maghat Hamid , Bouachrine Mohammed , Lakhlifi Tahar , Sbai Abdelouahid
Published: November 2024

Diabetes mellitus is a serious health disease that affects people all over the world. The number of persons identified with diabetes mellitus rises each year. α -Glucosidase is a digestive enzyme used to control diabetes mellitus. The searching for new potent α-glucosidase inhibitors capable of delaying carbohydrate digestion in the human body is an important strategy towards control of diabetes mellitus. In this work, a series of quinoline-based Schiff base derivatives already identified as α-glucosidase inhibitory activity was studied by using 2D/3D-QSAR approach. The best HQSAR/A-B-C-H-Ch-DA and CoMSIA/SEDA models were constructed using thirteen molecules in the training set, resulting in favorable values of Q2 (0.834 and 0.607), and high values of R2 (0.985 and 0.912), respectively. The generated HQSAR/A-B-C-H-Ch-DA and CoMSIA/SEDA contour plots were precious for designing and enhancing the α-glucosidase inhibitory activity of quinoline-based Schiff base molecules. Considering these results, two novel α-glucosidase compounds were designed to possess significant activity. The newly suggested molecules showed good outcomes in the preliminary in silico ADME/Tox evaluations. Molecular docking results revealed that the new designed inhibitors have a good stability in the active pocket of the studied receptor compared to voglibose, clinically used as an α-glucosidase inhibitor. MD simulation and MM-GBSA results confirmed the molecular docking outcomes. Finally, DFT analysis was useful in determining the most electrophilic and nucleophilic centers of the two designed α-glucosidase inhibitors.
EFFECT OF MeV ENERGY OF CRYPTON IONS ON Ni-Ti ALLOY HARDENING
Authors: Satpaev D. A. , Poltavtseva V. P. , Degtyareva A. S.
Published: November 2024

The patterns of changes in microhardness and phase composition of Ni-Ti alloy in the martensitic-austenite state have been experimentally studied as a result of irradiation with 84Kr15+ ions with the energy of 93 and 147 MeV at the temperature of ≤ 100 °С. It was established that irrespective of the energy of 84Kr15+ ions, a complete radiationstimulated В19'→В2 transformation occurs during irradiation. It was shown that hardening of the modified layers increases with the energy of 84Kr15+ ions and it is determined by hardness of NiTi austenite phase due to formation of the hardened radiation-introduced defective structures.
EFFECT OF THE FLUENCE OF HIGH-ENERGY CRYPTON IONS IRRADIATION ON Ni-Ti ALLOY HARDENING
Authors: Satpaev D. A. , Poltavtseva V. P. , Partyka J.
Published: November 2024

The patterns of changes in microhardness and phase composition of Ni-Ti alloy in the austenitic structural-phase state have been experimentally studied depending on the fluence of irradiation with 84Kr15+ ions with the energy of 147 MeV. It was established that hardening with a maximum in the range of the projected range Rp and in the out-of-range region (h > Rp) increases with the growth of the irradiation fluence up to 5·1019 ion/m2. It was shown that the reason of hardening is formation of the radiation-introduced hardened defective structures. The formation of nano-sized particles of the martensitic R-phase and the decrease in NiTi phase content with the B2 structure are also characteristic in the process of irradiation up to maximum fluence due to radiation effects.
SAREZSKOYE EARTHQUAKE OF DECEMBER 7, 2015
Authors: Negmatullayev S. Kh. , Dzhurayev R. U. , Ulubiyeva T. R.
Published: November 2024

Description of Sarezskoye earthquake of December 7, 2015, features of its manifestation on the surface, confinement to the geological structures and isoseist maps have been presented. A comparative analysis with the earthquake of February 18, 1911, have been presented and there is a conclusion on a possible deep earthquake in the vicinity of Sarez lake according to 2015 scenario.
ALGORITHMS AND RESULTS OF 2D-3D MEDIA VELOCITY MODEL RECONSTRUCTION IN TASKS OF UNDERGROUND NUCLEAR EXPLOSIONS MONITORING
Authors: Khairetdinov M. S. , Karavaev D. A. , Yakimenko A. A.
Published: November 2024

The paper considers the problem of velocity model reconstruction of an elastic medium in the problem of monitoring the zones of underground nuclear explosions. An approach based on solving a set of forward geophysical problems is considered. For the first method, a brief description of the method for numerical simulation of the full wave field is represented. Results of numerical experiments on modeling the medium with inclusion are also presented. Inclusion is an analogue of the cavern formed as a result of underground nuclear explosion. The software for creating 2D and 3D models of heterogeneous elastic media was developed. Theoretical results of experiments are presented.
SEISMOLOGICAL MONITORING OF NUCLEAR ENERGY FACILITIES LOCATIONS – THE BASIS OF THEIR OPERATION SEISMIC SAFETY
Authors: Nadezhka L. I. , Kolesnikov I. M. , Semenov A. E.
Published: November 2024

Efficiency of seismological monitoring by the Voronezh stations network (VMGSR) that records seismic events starting from the 2nd energy class has been demonstrated at the example of Kursk and Novovoronezh NPP location regions. The results of seismological monitoring allow to optimally and scientifically estimate seismic and seismic-tectonic conditions and their stability in nuclear station locations regions.
METAL ION BEAMS PRODUCTION AT ECR-SOURCE “DECRIS-3” WITH SOLID STATES HEATING TECHNIQUE
Authors: Ivanov I. A. , Sambayev Y. K. , Kozin S. G. , Kurakhmedov A. E. , Mustafin D. A. , Alexandrenko V. V. , Bondarchenko A. E. , Loginov V. N. , Bogomolov S. L.
Published: November 2024

Accelerated beams of metal ions are required for a series of scientific and technical tasks in the field of radiation physics of a solid state, for example, the only method for rapid assessments of the radiation damage investigation, the developed structural materials of nuclear technology is ion irradiation. The standard methods for production ion beams at ECR-sources from gas mixtures cannot fully meet the requirements of the experiment. To increase the spectrum of accelerated ions at the cyclotron DC-60 is working on developing methods of heating the solid substances to produce multiply charged ion beams of metals into an ECR ion source DECRIS-3. The article is dedicated to description of methods of production ion beams of metals in two ways: the direct injection of a substance into plasma and a method of heating the crucible with a working substance by micro-furnace. As a result of the work carried out on the DC-60 cyclotron, beams of lithium ions 6,7Li, 24Mg magnesium, 31P phosphorus and 40Са calcium were produced for the first time. Using these methods was produced beams of lithium ions 7Li1+ metal consumption of 1.1 mg/hour and derived a ion beam current of 500 µA, magnesium 24Mg4+ with the consumption of the substance 2.1 mg/hour and intensity of 81 µA, phosphorus consumption of substances 1.7 mg/hour at the beam current 31P5+ 60 µA and calcium 40Ca5+ with the consumption of a substance of 0.7 mg/hour when the beam current is 140 µA.
INVESTIGATION OF STRUCTURAL PROPERTIES OF FexNi100-x NANOTUBES
Authors: Borgekov D. B. , Kozlovskiy A. L. , Zdorovets M. V. , Kadyrzhanov K. K.
Published: November 2024

The paper presents the results of studying the structural properties of polycrystalline FexNi100-x nanotubes obtained by the template synthesis method. The nanostructures represent nanotubes with a high degree of polycrystallinity of Fe100-xNix with a body-centered cubic structure for 0 £ x £ 0.4, and with face-centered cubic structure for 0.5 £ x £ 0.9. Mechanisms for the synthesis of nanostructures with a specified phase composition and crystal structure have been established. It was found that Fe100 nanostructures possess the lowest degree of crystallinity, which is caused by a high degree of disorder of the crystal structure during the formation of iron nanostructures under given synthesis conditions. An increase in the concentration of nickel leads to a substantial decrease in the degree of disorder of the nanotubes and to the perfection of the crystal structure.
OPTIMIZING MONITORING OBSESRVATIONS OF WATER IN RADIATION HAZARDOUS AREAS OF STS BY MEANS OF ISOTOPE HYDROLOGY TECHNIQUE
Authors: Toktaganov T. Sh. , Aidarkhanov A. O. , Aktayev M. R. , Kokezhanov B. A. , Pronin S. S. , Iskenov A. O.
Published: November 2024

The article addresses determinations of features of ground water formed at places of radionuclide contaminations. It is found that the major source of ground water recharge is winter atmospheric precipitation. It is also revealed that ground water discharge into surface water occurs in August. This data is confirmed by measured results of stable isotopes as well as my measured level of ground water occurring in the bed of the Shagan river. During this period at places of ground water discharge there is a maximum concentration of man-made radionuclides in surface water of the Shagan river and Kishkensor lake. This is attributed to the fact that when the level of ground water increases radionuclides are washed out of cavities of “warfare” boreholes.
OPTIMIZING METHODS FOR RESEARCHNING INTO SOIL CONTAMINATION WITH TRITIUM GIVEN STS FEATURES
Authors: Serzhanova Z. B. , Aidarkhanova A. K. , Lyakhova O. N. , Koishybayev R. A.
Published: November 2024

The paper presents quality evaluation results of tritium determination technique (3Н) for soil – distillation technique used for determining its speciation in free water. To evaluate the impact of matrix structure on 3Н extraction process by distillation, soil, earth silicon and salt were used as samples. In the course of the experiment a tracer of various activity – from 100 to 100,000 Bq/l was used to assess completeness of extraction and impact of 3Н content. All of the experiments were conducted in several replications. At each experimental stage a blank experiment was conducted to assess its integrity. It is found that efficiency of distillation technique is on average 80–98 %. Distillation technique proved its efficiency except where soil is slightly wetted (with moisture of less than 10 %). When using the distillation technique stable minor losses that are corrected with a correction factor can be observed for soils of low moisture.
POLYMER INSULATING MATERIALS AND THEIR MECHANICAL PROPERTIES
Authors: Kupchishin A. I. , Taipova B. G. , Tronin B. A. , Shakhanov K. Sh.
Published: November 2024

The paper discusses polymeric insulating materials: polyethyleneterephthalate, polyimide, phenylone. Their mechanical properties are investigated. Various models of materials destruction are proposed. It was established that the mechanical properties of the films depend on the structure and conditions of their synthesis. The globular structure of polymers determines their fragility. The destruction, as a rule, occurs along the boundaries of globules weakly interconnected. Mechanical influences lead to the ability of the globule to unfold, and the globular structure becomes fibrillar, which leads to severe deformations of polymers. In the case of uniaxial loading of materials, an exponential model was calculated. A good agreement between the calculated and experimental data was obtained.
GENERALIZED CASCADE-PROBABILITY FUNCTION FOR HOUR-TIME FLOWS AND ITS CONNECTION WITH THE BOLTZMAN EQUATION
Authors: Voronova N. A. , Kupchishin A. I. , Shmygaleva T. A. , Kirdyashkin V. I. , Kupchishin A. A.
Published: November 2024

An analytical solution is obtained for the integro-differential equation of a cascade process for particles (knocked out atoms, etc.) in a three-dimensional model of an elementary act, into which a generalized cascade-probability function (GCPF) leads. It is shown that after the Laplace transformation, the equation passes into an integral one, which is then solved by the method of successive approximations. The basic physical properties of this function are established. With the constancy of the path to the interaction and the angle of departure of the particle after the collision, the GCPF goes into the simplest CPF. With small depths of registration, the probability that a particle will pass this depth tends to zero (both without collisions and when testing i interactions). At greater depths, these probabilities tend to zero. With a large i GCPF goes into a Stirling type formula. As the interaction path increases, the probability without interaction tends to unity, and the probability with i-interactions tends to zero.
DEVELOPMENT OF TECHNOLOGY OF ELECTROCHEMICAL SEPARATION OF FUEL ELEMENT OF HTGR
Authors: Dyussambayev D. S. , Gizatulin Sh. Kh. , Shaimerdenov A. A. , Silnyagin P. P. , Akhanov A. M. , Burtevayev N. , Ueta Sh.
Published: November 2024

High-temperature gas-cooled reactor (HTGR) by two-thirds consists of graphite. Graphite is a moderator and reflector of neutrons, as well as the main structural material of the active zone, which allows operating the reactor at high temperatures Graphite is moderator and neutron reflector, and the main structural material of the core, allowing the reactor to operate at high temperatures. Nuclear fuel is a spherical microfuel, which are compressed into a graphite compact, from which fuel assemblies are then assembled. The Institute of Nuclear Physics of the Republic of Kazakhstan is working on the qualification of irradiated fuel HTGR. To study the properties of the irradiated fuel HTGR, it is necessary to extract microfuel from the graphite matrix. The paper presents the results of experiments on the electrochemical separation of graphite and unirradiated fuel HTGR.
X-RAY DIFFRACTION STUDIES OF COATINGS OF THE HAFNIUM-CARBON SYSTEM
Authors: Tuleushev Y. Z. , Zhakanbaev E. A. , Suslov E. E. , Sarsenbayeva K. B. , Orakova M. S.
Published: November 2024

The technology of co-precipitation of hafnium and carbon coatings with different concentrations of carbon has been developed. When performing research by the method of magnetron deposition, hafnium-carbon coatings are formed in the concentration range from 59.8 to 11.2 at. % Carbon. The study of the phase composition of the coatings obtained by the method of x-ray analysis. The phase composition of the coatings was determined depending on the concentration of carbon in hafnium.
RING-SHAPED SEISMICITY STRUCTURES IN THE REGION OF IRAN: POSSIBLE PREPARATION FOR LARGE EARTHQUAKES
Authors: Kopnichev Yu. F. , Sokolova I. N.
Published: November 2024

We have been studying some seismicity characteristics in the region of Iran including those connected with preparation for large earthquakes. It was established that ring-shaped seismicity structure have been formed within depth range of 0-33 km prior to large Ezgeleh earthquake of 12.11.2017 (Mw=7,3). Shallow seismicity rings are characterized by threshold magnitude values (Mt1) and big axis lengths (L). Earlier we have obtained correlation dependences of Mt1 and lgL values on magnitudes of main events Mw for intracontinental earthquakes with mechanisms of reverse and oblique-reverse faulting, prevailing in the region of Iran. Using these dependences we estimated magnitude of large event which could be prepared in the area of ring structure: Mw=7,1±0,1 for the zone of the Ezgeleh earthquake. Big ring structures were identified at the south-west, north and east of Iran, where large earthquakes are not known according to instrumental and historical data. We estimated magnitudes of possible large earthquakes by characteristics of these structures: Mw=7,2±0,3, Mw=7,1±0,2 and Mw=6,6±0,1 in the regions mentioned respectively. Large seismic event, which probably is being prepared within the south-western part of Iran, can represent a special danger due to nearness of it’s source to the nuclear power plant “Busher”. We discuss the reasons of ring structures formation.
THE CONNECTION OF SEISMICITY WITH EXCESS MASSES OF THE GEOLOGICAL ENVIRONMENT BY THE EXAMPLE OF CENTRAL ASIA
Authors: Velikanov A. E. , Aristova I. L.
Published: November 2024

The facts and examples of seismicity connection with localized excess masses of the earth's crust, located both on the earth's surface in the form of different elevations of different density rocks, and to a lesser extent at depths under the day surface in the form of limited volumes of rocks with high density are described. These relationships are shown both globally and regionally for Central Asia using geodetic and gravimetric data in the form of detailed maps of digital elevation models and free-air gravity anomalies obtained from high-precision satellite imagery.
STRUCTURAL AND PHASE STATES OF TiCN COATINGS SYNTHESIZED BY MECHANOCHEMICAL ALLOYING BEFORE AND AFTER HEAT TREATMENT
Authors: Sagdoldina Zh. B. , Zhaparova M. S. , Zhanuzakova L. N. , Turganbekova A. B.
Published: November 2024

This work is devoted to the study of changes in the structural and phase states of TiCN coatings on the surface of titanium synthesized by mechanical fusion. In the work influence of heat treatment on the structural-phase states and mechanical-tribological properties of coatings was studied. It is established that the mechanism of formation of TiCN coatings is conditioned mechanical cold welding due to the deformation compaction of powder particles on the surface of titanium under the influence of ball impacts. The influence of heat treatment on the structural and phase states of TiCN coatings is studied. It is shown that at temperatures of 600 °C and 900 °C for 2 h, the TiCN coating is thermally stable. Microhardness and wear resistance of coatings have been studied using methods microindentation and tribological tests. It was found that at 900 °C, the wear resistance and microhardness relative to the initial increases twice, while the adhesive strength of the coatings does not deteriorate.
REACTOR EXPERIMENTS TECHNIQUE ON STUDYING THE INTERACTION OF HYDROGEN ISOTOPES WITH LITHIUM CPS BY DYNAMIC SORPTION METHOD
Authors: Tulubaev E. Yu. , Ponkratov Yu. V. , Gordienko Yu. N. , Samarkhanov K. K. , Bochkov V. S. , Zaurbekova Zh. A. , Prozorova I. V. , Martynenko E. A.
Published: November 2024

This work is devoted to the development of a methodology for conducting reactor experiments to study the interaction of hydrogen isotopes with lithium CPS by the dynamic sorption method. As a result of the work the design of an experimental irradiation device for conducting reactor experiments was developed. Neutron-physical and thermophysical calculations were performed to justify this design for use in reactor experiments. A technique was developed for conducting experiments with a sample of lithium CPS as a result of which the methodological conditions of the tests were determined: sample temperature; levels of deuterium flux supplied to the experimental cell; sample size; sample pretreatment conditions; system pump out mode, sample temperature adjustment mode, mass spectrometric measurements of the gas composition above the sample. Methodical experiments were carried out to determine the temperature dependence of the gas composition change in the chamber with a lithium CPS when various deuterium flows were applied. Thermal desorption experiments with a sample of lithium CPS were carried out.
INFORMATION AND MANAGEMENT SYSTEM DEVELOPMENT FOR “KORINA-2” FACILITY
Authors: Nauryzbayev R. Zh. , Sysaletin A. V. , Yermakov V. A. , Ilyinykh S. A. , Kudranova A. B. , Sapatayev Е. Е.
Published: November 2024

In 2019 members of the “Institute of Atomic Energy” branch of RSE NNC RK carried out work on Information and Management System (IMS) development for “KORINA-2” facility. Tasks were defined, solved as a result of indicated project implementation, data processing algorithms from primary converters, methods for information visualization and presentation on operator’s display screen were developed. The outcome of this work was a system, in which functions such as measurement, calculation, management, registration and display of experimental information at “KORINA-2” facility were implemented.
EVALUATION OF CORROSION CONDITION OF BN-350 REACTOR SPENT FUEL ASSEMBLY CASING MATERIAL AFTER SHORT-TERM THERMAL INFLUENCE
Authors: Kozhakhmetov E. A. , Koyanbayev E. T. , Dauletkhanov E. D. , Mukhamedzhanova R. M. , Urkunbay A. S. , Sapatayev E. E.
Published: November 2024

The results of the short-term thermal tests of SFA samples in the temperature range 450–900 °C are presented. The dependences of the formation of the corrosion layer of the SFA material on the temperature of thermal tests are determined by various ways. It was found that with an increase in the temperature of isochronous exposure above 750 °C, a noticeable discrepancy appears between the dependencies determined by various methods, due to the occurrence of uneven (localized) corrosion.
THE CHOICE OF AN OPTIMAL TECHNIQUE TO OBTAIN A COUNTING SAMPLE FOR THE ALPHA-SPECTROMETRIC DETERMINATION OF PLUTONIUM ISOTOPES
Authors: Zvereva I. О. , Kashirsky V. V.
Published: November 2024

The article addresses the most common techniques for obtaining a counting sample for the alpha-spectrometric determination of plutonium isotopes – co-precipitation with rare-earth elements and the electrolytic precipitation technique. It was found that the best source for alpha-spectrometry (well-reproduced, especially thin samples with a substance uniformly distributed over the area of the active layer) is obtained by electrolytic precipitation. Optimal parameters of the process to obtain counting samples (amperage, precipitation time, geometry of an electrolytic cell) were determined for this technique and electrolyte composition was chosen. An improved electrolytic unit with highly stabilized voltage was developed and constructed.
DETERMINATION OF THE BACKGROUND FREQUENCY OF UNSTABLE ABERRATIONS FOR THE DOSE ZERO POINT IN DIFFERENT REGIONS OF KAZAKHSTAN
Authors: Kenzhina L. B. , Mamyrbayeva A. N. , Kenesarina A. О.
Published: November 2024

he article gives research into the regional background frequency of unstable aberrations in residents of the main regions of Kazakhstan (North, South, West, East). This parameter as the dose reference “zero” point has a large percentage of uncertainty and is variable. Cities of regional importance were chosen by the biggest population size and its ethnic diversity. In each region a group of indigenous inhabitants was created – 10 volunteers in number. The groups were ranked by age and sex in the ratio of 1:1 (a total of 40 people). The background frequency for unstable chromosome damages was calculated by means of an automated cytogenetic platform on the basis of the Carl Zeiss AxioImager Z2 electronic fluorescent microscope, the automatic metaphase search and analysis system Metafer 4/M Search, ICAROS (MetaSystems, Germany). Research observations demonstrate an interregional variability of aberrant cells per 1,000 between 1.1±0.4 and 3.09±0.6, which can be attributable to a variety of human and objective factors of life activity.
DEVELOPMENT OF A RADIONUCLIDE MONITORING SYSTEM OF NUCLEAR EVENTS AND RADIATION ACCIDENTS IN NNC RK
Authors: Turchenko D. V. , Lyakhova О. N. , Kruglykhin A. A.
Published: November 2024

The article addresses the issue of building a radionuclide monitoring station in the Republic of Kazakhstan in order to register nuclear events and radiation accidents. Techniques for determining radionuclides in the air environment and recommendations for the choice of the main and auxiliary equipment to sample and analyze air are provided. The choice of a site for deploying the radionuclide monitoring station in Kurchatov city on the basis of NNC RK in accordance with CNTBT organization’s requirements is addressed. Data on the content of naturally occurring and man-made radionuclides in the air environment at the planned station location is given.
REVIEW: PHOTOLUMINESCENCE PROPERTIES OF UNDOPED AND Eu3+ DOPED ZnS NANOMATERIALS
Authors: Gahramanli L. R.
Published: November 2024

The PL properties of II-VI group semiconductor nanomaterials have been investigated depend of different synthesis method and other parameters. These group materials have interesting optical properties including PL properties of pure and doped materials. These group materials are mainly doped with rare earth metal for determine of improvement in the luminescence intensity. In this work we are analyzed PL properties of pure ZnS and Eu doped ZnS nanomaterials.
INFLUENCE OF DEFECTS FORMATION WAY ON PROPERTIES OF PROTON CONDUCTORS BASED ON LANTHANUM SCANDATE
Authors: Khromushin, I. V. , Aksenova Т. I.
Published: November 2024

The structure and properties of proton conductors based on LaScO3 synthesized by acceptor doping and the creation of a deficiency in La cation were studied. It has been shown that the number of intercalated protons in the oxide lattice increases with an increase in the degree of cationic doping and is higher when doped with strontium than calcium. It has been noted that in lanthanum scandate samples with cationic non-stoichiometry, the number of intercalated protons decreases with increasing lanthanum deficiency, which is probably due to the possibility of binding oxygen vacancies VO••  to (LaLa''' - VO••)' complexes and blocking their participation in the process of water dissolution. The activation energies of the conductivity of the volume and grain boundaries of lanthanum scandate synthesized by various methods are determined. It was shown that the conductivity and activation energy of conductivity of the volume of grains of samples doped with strontium are higher than when doped with calcium. It is noted that the activation energy of conductivity of samples with cationic non-stoichiometry is practically independent of the lanthanum deficiency.
THE CONTENT OF RADIONUCLIDES IN MUSHROOMS IN THE IMPACT ZONE OF SEMIPALATINSK TEST SITE
Authors: Shevchenko Yu. S. , Larionov N. V. , Polevik V. V. , Toporova A. V. , Aidarkhanov A. O.
Published: November 2024

The article provides research findings of levels and parameters of naturally occurring (40K, 226Ra, 232Th) and artificial (241Am, 137Cs, 90Sr, 239+240Pu) radionuclides accumulation by mushrooms in the territory adjacent to Semipalatinsk Test Site (STS), in the zone of fallout plume passing after the first nuclear test (August 29, 1949). It was found that, as a whole, none of activity concentration values, resulted for radionuclides in mushrooms, exceeds the permissible level. The main contribution to the total dose of internal exposure through ingestion of radionuclides, when mushrooms are consumed in the territory of interest, is made by the dose from naturally occurring radionuclides.
PRINCIPLES OF MERCURY-METRIC TOMOGRAPHY OF THE BORDERS OF UNDERGROUND NUCLEAR EXPLOSIONS INDUCED FRACTURE REGIONS
Authors: Murzadilov T. D.
Published: November 2024

The paper proposes a new technology using mercury-metric tomography of the borders of underground nuclear explosions induced fractures in the geological medium. Physical and mathematical modelling of the processes of halo formations of geo-chemical mercury in the medium under the impact of hot gaseous products of explosions that arise to the day surface became the theoretical basis of the algorithms of this technology.
DIAGNOSTIC METHODS FOR STUDYING THE NATURE OF EARTHQUAKES
Authors: Pogoda E. V.
Published: November 2024

The paper considers questions of application of modern methods of instrumental studies of geological environment diagnostics.
CONTEMPORARY MONITORING OF SEISMIC EVENTS FROM THE LOP NOR TEST SITE AREA BASED ON DATA FROM IGR RK NETWORK
Authors: Sokolova I. N. , Velikanov A. E.
Published: November 2024

The paper presents the results of a detailed analysis of seismic events in the vicinity of Lop Nor nuclear test site (PCR) and its adjacent areas. The quality of determination of main parameters of seismic events in this area (time in epicenter and event magnitude) was compared based on bulletins of Kazakhstan National Data Center (KNDC) and China Earthquake Networks Center (CENC). The presence of quarry explosions was detected from the Lop Nor test site area in KNDC seismic bulletin. Based on the space images, coal quarries were detected on the site’s territory; in these quarries ndustrial explosions of a small yield can be carried out.
Experimental Study for Performance Measurement of Space-Shared and Time-Shared Scheduling Algorithm with Virtual Machine and Varying Length Jobs using CloudSim
Authors: Vinod L. Desai
Published: November 2024

Cloud Computing is one of the growing domains of computer science where researchers across the world are working to get deep insight into this domain and to develop new algorithms in various aspects of computing to make it more easily accessible to the users. It provides a simple, web-based, architectural neutral and heterogeneous platform where the users can access the services and resources as per their requirements on a pay per use model with ease. Scheduling is a process through which one process is allowed to use the computing resources while another process is delayed because of unavailability of any resources. Scheduling mechanism makes the system more efficient, faster and fairer. In this paper, I have studied Space-Shared and Time-Shared Scheduling algorithm for Virtual Machine and different length tasks using CloudSim to evaluate the performance based on various parameters like turnaround time (TT), execution time (ET) and waiting time (WT). The objective behind this work is to analyze and evaluate the effectiveness of both algorithms with respect to scheduling the resources.
The Use and influence of Learning Analytics in Higher Educational Institutions: A Mediation Model of Student Attainment between Student Retention and Student Employability.
Authors: Srinivasa C, Kiran Kumar H, Mahesh Kumar T A
Published: November 2024

Purpose: The goals of this article are to (1) identify factors influencing Learning Analytics in Bengaluru HEIs and (2) examine the mediating role of Student Attainment in the relationship between Student Retention and Student Employability in Higher Educational Institutions (HEIs).
Design/methodology/approach – This research assembles and synthesizes data on the application of learning analytics. Learning analytics is the subject of empirical studies, including Public and private higher education institutions in Bengaluru were each sent one of 485 questionnaires. In total, 450 Chancellery, Dean, HOD, and Directors participated and completed the survey. Thirteen questionnaires were eliminated from the analysis because of missing data or outliers discovered during the data screening process. We could sift through 437 surveys, making up the final sample. The study runs SEM analysis using the maximum likelihood method to test the causal relationship between learning analytics factors. The impact of retention as the independent variable (exogenous) on student employability as the dependent variable (endogenous) was tested along with attainment as a mediator between these two variables.
Findings: Evidence demonstrates how learning analytics may assist educational institutions in making better use of data for decision-making. The findings revealed that retention significantly indirectly affects Employability through Attainment. Attainment is significantly mediating between Retention and Employability. Since both standardized direct and indirect paths have a p-value below 0.05, thus, it is confirmed that attainment partially mediates the relationship between Retention and Employability of the students.
Originality/value: The current study has explored retention, attainment, and employability as the critical factors that must be considered before applying Learning Analytics in Higher Educational Institutions. The research results confirmed that students' employability is significantly influenced by retention and attainment. Educational institutions and academics, particularly those working in open and distance settings, should use the study's findings to stay abreast of this developing subject and provide the groundwork for further research.
Emotional Intelligence Proficiency in Students Enrolled in Professional Courses
Authors: Shailendra Singh Sainwal
Published: November 2024

Emotional Intelligence (EI) plays a vital role in both professional and personal success, with research indicating that 80% of a person’s success is attributed to their EI, while only 20% depends on IQ. EI refers to the ability to recognize, understand, and manage emotions effectively, both in oneself and others. This study aims to assess the level of EI among undergraduate and postgraduate students in Dehradun. Data was gathered from 780 students across various institutes in Dehradun. The research is organized into eight sections: introduction, concept of EI, key variables, the importance of EI in success, types and attributes of EI, analysis and discussion of findings, conclusions, and suggestions for improvement. The study highlights the significance of emotional intelligence in shaping student success and offers insights into how educational institutions can foster this skill among students. By understanding the emotional dynamics, students can enhance their personal and professional growth, contributing to their overall well-being and achievement. The conclusions and suggestions from this research will help in developing strategies to nurture EI among students for better outcomes in their academic and future careers.
АNАLYSIS OF РОSSIВLЕ SСНЕМЕS FOR THE DEVELOPMENT OF ENERGY САРАСIТIЕS IN THE REGION
Authors:   Grozny State Petroleum Technical University named after M.D. Millionshchikov, Debiev M.V. , Khastsaev B.D. ,   Nогth-Сauсasus Mining and Metallurgical Institute, Khmara V.V. ,   Nогth-Сauсasus Mining and Metallurgical Institute, Rutkovsky A.L. ,   Nогth-Сauсasus Mining and Metallurgical Institute
Published: November 2024

The paper examines issues of effective development of the regional energy sector. Based on a systematic approach, a set of basic indicators has been formed that characterize the process of development and improvement of the regional electric power complex. Based on these indicators, it is intended to evaluate the effectiveness of each of the selected options in relation to regional energy, which are of greatest interest. To solve this problem, based on a systematic approach, a list of all participants in the process of forming energy potential and its expenditure in the region has been determined. А general scheme of interaction between all participants in this area has been constructed, which includes organizations, resources, natural factors, etc., included in this list. Four entities have been identified that determine the development of regional energy, and based on an analysis of their content, a set of fifteen basic indicators for the development of the regional energy sector has been formed.
Pembelajaran Memainkan Alat Musik Polopalo melalui Metode Drill pada Siswa Kelas VIII Di SMP Negeri 1 Tilamuta
Authors: Dai Yahya , Karlan Laode , Pulukadang Mimy Astuty
Published: November 2024

Penelitian ini bertujuan untuk mendeskripsikan proses pembelajaran memainkan alat musik polopalo melalui metode drill pada siswa kelas VIII di SMP Negeri 1 Tilamuta. Dalam proses pembelajaran, diperlukan metode pembelajaran yang dapat membantu memudahkan ketercapaian tujuan pembelajaran. Penelitian ini berangakat dari adanya permasalahan  yang didalam kelas musik khusnya pada polopalo tradisional. Dalam pelaksanaan pembelajaran musik tradisional penelitian ini merupakan pembelajaran memainkan alat musik polopalo pada siswa kelas VIII, peneliti menggunakan metode drill, yaitu metode yang menekankan pada latihan yang berulang-ulang secara terus menerus, untuk menguasai kemampuan atau keterampilan tertentu. Untuk dapat menguasai teknik bermain polopalo yang merupakan alat musik bersifat perkusi melodis, siswa harus dapat menguasai pemahaman tentang tinggi rendahnya nada, ritme, dinamika, tempo, hingga akor dan harmoni. Dari 9 peserta didik yang menjadi sampel dalam praktek memainkan polopalo ini, 5 orang peserta didik mendapatkan perolehan A dengan rentang skor 91-100, dan 4 orang peserta didik lainya mendapatperolehan kategori B  dengan rentang skor 83-90. Dari hasil teakhir tersebut maka dapat disimpulkan bahwa pembelajaran polopalo melalui metode drill pada siswa kelas VIII dapat memaksimalkan pemahaman dan keterampilan peserta didik dalam pembelajaran musik tradisional polopalo.
التَّركِيبَة السُكَّانِيَّة والخَصَائِص السَّريرِيَّة وجَودة الرِعَايَة الصحِّيَّة لمَرضَى التَّصلُّب الجَانِبي الضُّموري في البُلدانِ العَرَبِيّة: مُراجعة مَنْهَجِيَّة وتَحليل تَلوي
Authors: حمد عبد الله أشرف , عبد الوهاب عمر أحمد
Published: November 2024

الملخص

المُقَدِّمَة: التَّصلُّب الجانبي الضُّموري هو أحد الأمْراض العَصَبيَّة التَنَكُّسِيَّة التي تُصيب الخلايا العَصَبيَّة في المُخ والحَبْلِ الشَّوكِي، ويَنْتَهي المرض غَالباً بالوفاةِ. هَدَفَت هذه الدراسة لتَلخيص خَصَائِص مَرْضَى التَّصلٌّب الجانبي الضُّموري في البُلدان العَرَبية ومَدى جَودة الرِعاية الصحِّيَّة المُقدَّمة لهم.

المَنْهَجِيَّة: تَمَّ إجْراء هذه الدِّراسة وِفْقَاً للمبادِئ التَّوجِيهيَّة للمُراجعات المَنْهَجِيَّة والتَّحالِيل التلوية (PRISMA). تَمَّ إجراء بحث مُحَوْسَب في ثلاث قواعد بيانات في الأول من شَهر كَانُون الْأَوَّل لعام 2023م باستخدام المصطلحات المناسبة. تَضَمَّنَت مَعايير الأَهْلية أن تكون الدِراسة أوَّلية وَصفيَّة للتَركِيبة الدِّيمُوغْرافية أو الخَصَائص السَّريرية أو الرِعَاية الصحِّيَّة لمرضى التَّصلُّب الجانبي الضُّموري في أي من البُلدان العَرَبيَّة. تَمَّ إنشاء التَّحليل التلوي والرسومات البيَّانِية الغَابيَّة باستِخدام بِرنامج R Studio وذلك باستخدام نَمُوذَج تَحليل التأثير العشوائي. تمَّ حِساب النِّسبَة المئويَّة للمُتغيرات الفِئويَّة والمُتوسِّط الكُلي للمُتغيرات المُستمرة مع فَاصِل الثِّقة 95% لتقدير الحجم الشُّمولي.

النَتَائِج: بَعد فَحص الأدبيات، تَمَّ تَحدِيد وإدراج سبع دِراسات - جيدة الجَودة - مُوافِقة لمعايير الأهليَّة. شَملت هذه الدراسات خَمس دراسات وَصْفِيَّة لمَرضَى التَّصلُّب الجَانِبي الضُّموري ودراسَتين تَمَّ إجراؤهم عَلى مُقدِّمِي الرِعَاية الصحِّيَّة. أَظهَرَ التَّحليل التلوي أنَّ نِسبَة الذُكور الشُّموليَّة عَبرَ كَافة الدراسات 63% مع فَاصِل ثِقَة يَتَرَاوح بين 57% و69%. كانت نِسبَة المُصابين بالنٌوع البَصَلِي للمَرَض عَبرَ كَافة الدِراسات 23% مع فاصل ثقة يتراوح بين 19% و28%. كما كَانَ المُتَوَسط الشُّمولي لعُمر المَرضَى عِندَ بِداية المَرض 53.3 سنة مع فاصل ثقة يتراوح بين 51.6 و55.1 سنة. أَشَارَت الدِراستان الخاصتان بِالرِّعَايَة الصحِّيَّة إلى ضَعْف كَفَاءَة الرِعَاية الطِّبيَّة بِمَرضَى التَّصلُّب الجانبي الضُّموري.

الخَاتِمَة: تُشير هَذِه المُراجَعة إلى نُدرة وقِلَّة الأدَبِيَّات البَحثيَّة المَنشُورَة عَن مَرضَى التَّصلُّب الجَانِبي الضُّموري فِي البُلدان العَرَبيَّة. فِيمَا يَخص الأدبيات المُتاحَة فإِنها تُشير إلى أنَّه فِي حِين أنَّ مَرضَى التَّصلُّب الجَانِبي الضُّموري يَتَشَارَكُون بَعض السِمَات السُكَّانِيَّة والسَريريَّة مَعَ المَرضَى مِن مَناطِق أُخرى، إلَّا أنَّ هُناك اختلافات ملحوظة، كما أَشَارَت الدِراسَات أيضاً إلى ضَعف كَفَاءَة الرّعاية الصحِّيَّة المُقَدَّمَة. يُوْصَى بِتَوجيه المَزيد مِن الأبحاث لدِراسَة مَرضَى التَّصلُّب الجَانِبِي الضُّمُورِي فِي العَالَم العَرَبِي.
Assessment of Microbial Air Quality of Antenatal and Postnatal Wards of Four Major Hospitals in Ondo State Nigeria
Authors: Oyetayo V. O , Oduma C. P.
Published: November 2024

The air microbial load and antibiotic susceptibility of microorganisms obtained from antenatal and postnatal wards of four major hospitals in Ondo State, Nigeria were assessed. The microbial load of each ward was determined by the passive settle plate method. The bacterial and fungal isolates obtained were identified based on cultural, morphological, and biochemical characteristics. The following microorganisms were tentatively identified: Proteus spp, Serratia marcescens, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus spp, Micrococcus luteus, Pseudomonas spp, Bacillus subtillis, Bacillus cereus, Aspergillus spp, Penicillium notatum, Cladosporium spp, Mucor spp and Articulospora inflata. The bacteria that had the highest percentage occurrence (28.50%) were Bacillus subtillis and Staphylococcus aureus, while the least occurrence was recorded for Serratia marcescens (2.38%). Among the fungi, Penicillium notatum had the highest occurrence (44.70%), while Articulospora inflata (1.18%) had the lowest occurrence. The result of the antibiotic sensitivity pattern of the isolates showed that all the bacteria were susceptible to the commercial antibiotics except Serratia marcescens which were resistant to all the tested antibiotics. It is well known that life-threatening infections can be acquired from the hospitals, hence, it is recommended that improved hygienic procedures be put in place in these hospitals to reduce the occurrence of these microorganisms in antenatal and postnatal wards.
Type of COVID-19 Vaccine Administration Errors and Deviations at the Primary Health Care Vaccination Sites in the State of Qatar 2021-2022
Authors: Al Zaidan Manal , Bakri Ahmad Haj , Al-Kuwari Mohamed Ghaith
Published: November 2024

Objective This research aimed to assess coronavirus disease 2019 (COVID-19) vaccine administration errors at Primary Health Care Centres (PHCC) in Qatar and provide corrective measures to enhance patient safety based on the Centre for Communicable Diseases recommendations.

Methods A retrospective analysis was conducted on the electronic medical records of patients receiving COVID-19 vaccines at PHCC between 23 December 2020 and 31 December 2021. Demographic information, vaccine details, administration dates, lot numbers, and vaccination sites were extracted. A descriptive analysis was performed to calculate the percentages of common vaccine administration errors outlined by the CDC.

Results PHCC administered 2,797,941 and 694,643 vaccine doses in 2021 and 2022, respectively. The primary error category was data quality, with the highest observed error being a discrepancy between vaccine expiration dates and actual dates (3.1% in December 2022). In 2021, all error percentages within data quality were below 0.37%. Notably, the most prevalent vaccine administration deviation in 2021 was interval rule 2, where the second dose was administered more than 42 days after the first dose. The highest deviation (1.59%) was reported in November.

Conclusions Vaccination remains crucial for disease prevention, necessitating accurate vaccine administration processes. The study underscores the importance of effective implementation and monitoring of vaccination programmes. PHCC’s strategies, including ongoing training, adherence to guidelines, and a monitoring dashboard, contributed to better error understanding. This approach facilitated targeted training and communication efforts to enhance patient safety and minimise potential harm. The findings highlight the significance of continuous improvement in vaccine administration to ensure the success of public health interventions.
Kawasaki Disease: Case Report of an Unexpected Diagnosis in a 5-Month-Old Infant with Fever without Source
Authors: Alesali Mohammad , Elhamidi Mohammad
Published: November 2024

Background Fever without a source of infection (FWS) is a common presentation in infants and children. Kawasaki disease (KD) is a rare but serious illness that can sometimes present with FWS. Early diagnosis of KD is important in infants younger than 6 months because delayed treatment has a poor outcome in this age group.

Case presentation A 5-month-old male child, who was first taken by his parents to the primary health center with a complaint of fever, was referred to the hospital Pediatric Emergency Center (PEC). A viral cause was suspected, and he was sent home on oral antipyretic medicine. The next day, the infant developed decreased oral intake and lethargy, so he was admitted to the PEC for observation. The infant was initially diagnosed with sepsis and admitted to the pediatric intensive care unit (PICU). On the fourth day of fever, the infant developed a skin rash, bilateral nonpurulent conjunctival congestion, strawberry tongue, and left posterior cervical lymphadenopathy. The infant was diagnosed with KD and received intravenous immunoglobulin (IVIG) and aspirin. The infant made a full recovery and was discharged home after 11 days of hospitalization.

Discussion KD is a rare but serious illness that can affect infants and children. Infants younger than 6 months with KD tend to have incomplete forms of the disease, which can make the diagnosis difficult. Delays in the diagnosis and treatment of KD can have serious consequences, including the development of coronary artery aneurysms (CAAs).

Conclusion This case report highlights the early presentation of KD in a 5-month-old infant. The early signs and symptoms of KD can be vague or mimic other common illnesses such as viral infections and sepsis. The diagnostic criteria may not be met in the early phase of the disease. Laboratory tests are not specific or diagnostic. Early diagnosis and treatment are essential to prevent serious complications. The patient in this case report was fortunate to be diagnosed and treated early. He responded well to treatment and made a full recovery.
Arquialaúde baseado em Matteo Sellas 1630 (9)
Authors: Giesteira Adriano Chaves
Published: November 2024

Foi realizada a reconstrução do Arquialaúde de Matteo Sellas 1630 (9) disponível na coleção do Museu Cívico Medieval de Bolonha na Itália, a partir da planta desenhada por Renatus Lechner em 1980.  As dimensões e principais características foram mantidas conforme a planta. No entanto, optou-se por reduzir o número de faixas e utilizar diferentes madeiras na construção instrumento.