bluuebunny/crossref_metadata_2025 huggingface dataset:
Peningkatan Pemahaman Dunia Kemaritiman Melalui Sosialisasi Kepada Siswa - Siswi SMA/SMK di Pesisir Barat, Lampung
Authors: Suheriyatmono Suheriyatmono
Published: November 2024

Indonesia merupakan negara maritim yang terdiri dari 70% lautan dan 30% daratan, memiliki lebih dari 17.000 pulau dengan garis pantai lebih 99.000 km, oleh karena itu disebut juga dengan kepulauan. Maritim berhubungan erat dengan wilayah laut atau perairan, sehingga membuatnya tidak terpisahkan dari aktivitas manusia. Kegiatan pengabdian kepada masyarakat ini bertujuan memberikan informasi dan menumbuhkan kesadaran masyarakat akan pentingnya peranan kemaritiman. Pengabdian kepada masyarakat ini diberikan untuk memberikan tingkat kesadaran masyarkat agar dapat turut berperan dalam pengelolaan bidang kemaritiman. Sosialisasi ini diberikan khususnya kepada siswa/i SMA/SMK di Bandar Lampung, dengan harapan menyiapkan generasi penerus dalam pemanfaatan dan peningkatan pembangunan serta pertumbuhan ekonomi masyarakat dari bidang maritim.
Pelatihan Membuat Bross Dapat Menciptakan Jiwa Wirausaha Pada Ibu-Ibu Rumah Tangga di Sekitar Kampus Institut Maritim Prasetiya Mandiri
Authors: Yuniastuti Rinamilyati
Published: November 2024

Pengabdian ini dilakukan dengan memberikan pelatihan pada ibu ibu rumah tangga di lingkungan kampus. Adapun tujuan dari pelatihan ini juga dapat menciptakan jiwa wirausaha para ibu ibu rumah tangga. Dengan menciptakan wirausaha dengan bidang kegiatan asesoris berupa bros maka akan membuka peluang usaha lebih luas.Metode pelaksanaan pelatihan dengan metode langsung praktek. Pelatihan dilakukan di kampus Institut Maritim Prasetiya Mandiri di Bandar Lampung dengan peserta 37 ibu ibu rumah tangga.Hasil evaluasi pelatihan membuat bros ini terlaksana dengan baik dan para peserta ibu ibu rumah tangga sudah mempunyai kreatifitas dan inovasi dalam membuat bros.
CHEMICAL RESISTANCE OF NHBR AND NBR IN PROPYLENE
Authors: Chen Xuming , Krejci Michael , Drake Adam , Salem Hamid , Mozisek Tylor
Published: November 2024

The chemical resistance of HNBR and NBR in propylene is considered as no resistance by many chemical compatibility handbooks and industry chemical resistance tables and charts. This situation drives the change of the elastomer compounds from cheap HNBR/NBR to expensive fluoroelastomer for applications involving propylene. However, in the literature, NBR and HNBR are rated as having good or excellent chemical resistance to all other hydrocarbons, such as ethylene, ethane, propane, butane, and butylene. It seems that there are some special or unknown characteristics of propylene that make it very harsh to both NBR and HNBR; therefore, it is important to investigate the chemical resistance of NBR and HNBR in propylene. In this study, the chemical resistance of HNBR and NBR in propylene is investigated according to ISO 23936-2 and ASTM Standard D 471. The test results are crucial for the applications of HNBR/NBR in contact with propylene. Based on the tests, we investigated tensile property changes, volume changes, and glass transition temperatures and chemical structures of HNBR/NBR after aging in high-pressure propylene at an elevated temperature. The Hansen solubility parameters (HSPs) of HNBR and NBR and many hydrocarbons such as ethylene, ethane, propylene, propane, butane, and butylene were estimated. Based on the HSP, the polymer–solvent interaction parameters between HNBR/NBR and hydrocarbons were also estimated to explain the chemical resistance of HNBR/NBR in propylene. An aging mechanism was proposed to explain the changes of HNBR and NBR in propylene aging. This study enhanced guidance on chemical resistance of HNBR/NBR in propylene to the elastomer industry.
The elasticity of demand and its role in consumer behaviour determination: A comparative analysis of Europe and the USA
Authors: Oleksy-Gębczyk Aneta
Published: November 2024

Determination of consumer behaviour is relevant for ensuring the effective functioning of both individual companies and the country. Given this, additional research on instruments that describe it, such as demand elasticity, remains important. The study aimed to analyse the elasticity of demand in Europe and the United States of America. As part of the study, a statistical assessment of the price indicators for certain types of products, namely oil (from 1989 to 2023), milk (from 2001 to 2022) and chicken meat (from 1991 to 2022), as well as changes in the level of consumption of these products, was conducted. Based on the calculated and analysed demand elasticity indicators, the study concluded that price is not the only and main factor in changing demand for products. The most striking instance was the situation with chicken, the price and demand for which increased significantly, primarily due to the transition of the population to a more responsible and healthy diet. At the same time, the elasticity of oil demand for the United States of America was stable and close to zero, while for European countries it was negative, due to their significant dependence on energy imports, including oil, which contributes to a faster transition to alternative energy sources. In the case of milk, the elasticity varied depending on where the assessment was conducted: in the United States or Europe. The results will allow for more effective policymaking in this area and create new opportunities for the development of local companies
Blockchain and sustainable finance: Enhancing transparency and efficiency in green investments
Authors: Khalegi Firuza , Kadyraliev Aibek , Tursunalieva Dinara , Orozbekov Alymbek , Bigali Aizat
Published: November 2024

The study aimed to analyse the possibilities of using blockchain technology to increase transparency and efficiency in sustainable finance. The application of blockchain technologies and environmental and social practices in the context of sustainable finance was analysed, emphasising implementation and prospects in Kyrgyzstan. Blockchain, as an innovative decentralised data recording technology, provides a high level of security, transparency and immutability, which renders it particularly valuable for the financial sector. The study highlighted how blockchain can improve international transfer processes, increase the transparency of financial transactions and simplify the management of smart contracts, and noted existing challenges such as scalability and legal issues. The role of blockchain technologies in sustainable finance, especially in the field of green investments, was highlighted as an important aspect of the study. The introduction of blockchain in areas such as green project financing and social initiative management can help increase investor confidence and improve investment performance. Financial technology is also central in shaping new approaches to finance and investment, facilitating access to capital through crowdfunding and person-to-person (P2P) lending platforms. The introduction of environmental and social practices in financial institutions of the Kyrgyz Republic demonstrates the growing attention to corporate responsibility and sustainable development, despite the initial stage of their implementation. On international stage, successful projects such as the use of blockchain to track supply chains, green bonds and carbon credit management demonstrate the potential of technology to improve the transparency and efficiency of sustainable finance. These examples can be used by Kyrgyzstan in developing and implementing domestic blockchain and environmental and social initiatives, contributing to more sustainable economic growth and attracting international investment
Economic assessment of the export potential of the Kyrgyz regions: Methodology for calculating and analysing the rating
Authors: Dooranov Almazbek , Jumabekova Nuriya , Sarygulova Roza , Bavlankulova Dinara , Dzhylkychieva Zhyldyz
Published: November 2024

The purpose of the study was to develop a methodology for assessing the export potential of the regions of Kyrgyzstan and conduct an analysis aimed at identifying key factors affecting competitiveness and the development of export opportunities. The methodology was based on the analysis of statistical data from official sources such as the websites of government agencies, ministries, statistical agencies, and international organisations to ensure the accuracy and reliability of the assessment of the export potential of the regions of Kyrgyzstan. The results of the study showed that from 2019 to 2023, there was an overall increase in export volumes in the regions of Kyrgyzstan due to successful economic reforms and infrastructure improvements. The greatest achievements are observed in Batken, Jalal-Abad, Talas regions and the city of Bishkek, while Issyk-Kul and Naryn regions need additional measures. The positive dynamics of the gross regional product (GRP) per capita confirms economic growth and an increase in living standards. The implementation of tax reforms and investments in infrastructure creates favourable conditions for exports. In turn, the international experience of countries such as Singapore, Germany, South Korea, Chile, and India demonstrates the effectiveness of investments in infrastructure and support for innovation to increase the competitiveness of the country's regions. The conclusions highlighted the importance of targeted government initiatives and investments for the balanced development of regions and maximising their contribution to the national economy through the effective use of export potential. Special attention was paid to the need to develop regional support programmes that promote the growth of export activity, improve infrastructure, and attract international investors. This, in turn, contributes to reducing economic disparities between regions and ensuring sustainable economic growth of the country in general
Factors Associated with Dental Caries Prevalence Among Socially Vulnerable Children
Authors: Marques Paulo Leonardo Ponte , Moreira Cavalcante Antonia Uilyana , Saraiva e Silva Marilia Pamplona , Simplicio Isadora Maria Paiva , Ramalho Ana Maria Jucá Novaes , Marques Karyne Barreto Gonçalves , Cardoso Maria Clara Lima Barbosa , Veloso Camille de Sousa , Sousa Zildenilson da Silva , Branco Thiago Castelo , Aguiar Dulce Maria de Lucena
Published: November 2024

The aim of this study was to evaluate the association between socioeconomic factors and the oral health status (OHS) of children in socially vulnerable situations assisted by a prominent nongovernmental organization in Fortaleza, Ceará state, Brazil. This is a cross-sectional observational study with a quantitative approach. One hundred children aged 5 to 6 years were included. Most children (n = 71, 71%) had dental caries. Only access to running water showed a statistically significant difference (p = 0.005) in relation to the level of dental pain. Correlations were tested through multiple linear regression analysis, revealing that the number of rooms in the home (p = 0.023) and family income (p = 0.022) were predictors of the DMFT index. Access to running water (p = 0.001) and the DMFT index (p = 0.010) were predictors of the level of pain. Children in situations of social vulnerability have a higher prevalence of dental caries associated with socioeconomic factors. It is essential that continuous strategies for promotion and prevention in oral public health be renewed to monitor children's development and growth.
Improving Academic Standard of Low-Performing Adolescents: A Delphi Study
Authors: Pandey Mangesh , Keshav Rithika , Behera Narayan
Published: November 2024

The Indian educational landscape, marked by infrastructure limitations and disparities in educator quality and school types, presents an opportunity for equitable education enhancement. This study employs the Delphi method to identify effective learning strategies for teacher training and policy considerations. Initially, 57 experts provided opinions on strategies for academically low-performing adolescents. Subsequently, 25 experts ranked these strategies’ importance using a Likert scale. In an independent round, 50 new experts with teaching experience shared insights into strategies implemented for low-performing school adolescents. Of 38 proposed strategies short-listed in the first round, experts strongly recommended 21, yet educators implemented only nine. Notably, strategies supported by existing literature and strongly endorsed by experts, such as experiential learning, reading aloud, and independent thinking, remain unimplemented. This absence could impede adolescents’ knowledge and hinder academic success. Integrating evidence-based strategies into the curriculum could enhance low-performing adolescents’ academic performance, career prospects, and life satisfaction.
AI in Inclusive Education: A Systematic Review of Opportunities and Challenges in the Indian Context
Authors: Gupta Mansi , Kaul Shallin
Published: November 2024

India’s educational landscape, characterised by its dynamism and diverse student populace, has witnessed a notable shift towards inclusive education principles, aiming to provide equitable learning opportunities for all.  The burgeoning advancements in Artificial Intelligence (AI) offer a promising avenue to revolutionise traditional educational paradigms, making the intersection of AI and inclusive education pivotal, especially within India’s unique socio-cultural and economic context. This systematic review explores AI applications in inclusive education within India, highlighting key trends, successful implementations, and challenges. The findings reveal that AI can significantly enhance personalised learning, assistive technologies, and administrative efficiencies, contributing to more inclusive educational environments. However, challenges such as linguistic diversity, varying learning environments, and uneven technological infrastructure pose significant obstacles. The review underscores the need for context-specific AI solutions and robust policy frameworks to address these challenges, providing insights into how AI can be effectively harnessed to foster inclusive education in India, catering to the diverse needs of its student population.
Video Assisted Learning Module (VALM) for the Least Learned Competencies in General Mathematics
Authors: Santiago Lairene Mae , Nabayra Jahfet N
Published: November 2024

This educational design research aimed to develop and evaluate a video-assisted learning module (VALM) to enhance learners’ mathematics proficiency and improve teachers’ instructional efficiency. The study, anchored on the ADDIE Model, gathered data from year 11 and 12 pupils and five experts. Analysis revealed least-learned competencies in general mathematics, particularly exponential, logarithmic and inverse functions. The VALM comprised a learning module with supplementary video content. The module included a cover page, preface, objectives, study and practice guides, assessment, references, solution boxes, graphing pages and an answer key. The video featured a title, disclaimer, objectives, step-by-step solutions and references. Both learners and experts rated the materials highly acceptable regarding learning objectives, content, organisation, presentation, format, design, activities, and assessment. The VALM was helpful, easy to understand, enjoyable, convenient and mobile. Results suggest that video-assisted learning modules are conducive to enhancing mathematics proficiency and serve as practical supplementary instructional tools across various teaching-learning scenarios in general mathematics.
Effect of Technological Pedagogical and Content Knowledge Framework based Capacity Building Programme Module (CBPM) on Teaching Aptitude of Pre-Service Teachers
Authors: Thappa Seema Rani , Baliya Jyoti Narayan
Published: November 2024

Technology integration in education transcends the mere implementation of technological artefacts, encompassing theoretical frameworks and evidence-based research findings to enhance pedagogical practices rather than being limited to the rudimentary application of computer hardware and software in instructional delivery. This study employed a quasi-experimental methodology, utilising a pre-test/post-test equivalent group design incorporating the Solomon four-group paradigm to generate quantitative data from pre-service teachers enrolled in undergraduate teacher education programmes. Statistical analyses, including descriptive measures of means, standard deviations and standard errors of means, demonstrated a significant favourable influence of a Technological Pedagogical and Content Knowledge (TPACK) framework-based capacity-building programme Module on the teaching aptitude of pre-service teachers.
Theoretical anti-tuberculosis activity and molecular docking investigation of N-silylated heterocyclic compounds with benzyl chloride catalyzed by ammonium sulfate-doped red algae
Authors: Barazzouq Ali , Ouzebla Driss , Hsissou Rachid , Daoudi Mohammed , Bahkali Ali H. , Zeroual Abdellah , Wang Shifa , Syed Asad , Idrissi Mohamed El
Published: November 2024

In this charge we designated a Hilbert-Johnson process by coupling of heterocyclic N-silylated with benzyl chloride at 100°C using the calcined red algae (CRA) doped with ammonium sulfate (AS), AS@CRA as a heterogeneous catalyst. The resulting examination systems, which included atomic absorption, BET methodology and X-ray diffraction (XRD), scanning electron microscopy (SEM/EDX), and Fourier transform infrared spectroscopy (FT-IR), were employed to describe these catalysts. The effect of catalyst and alkylated agent were extensively studied. This catalyst can also be recycled several times in this condensation, and lastly, we suggested a probable answer mechanism for this process. Moreover, our molecular docking investigation revealed the anti-tuberculosis potential of the synthesized compounds. Notably, the drug isoniazid exhibited higher binding energies compared to the products 2a, 2b, and 2c. Additionally, the ADME study suggests that highly efficacious synthetic compounds may possess anti-tuberculosis properties.
THE STUDY OF SOIL COVER ZHANAKUSH RURAL DISTRICTS IN WEST KAZAKHSTAN REGION ON THE BASIS OF GIS-TECHNOLOGIES
Authors: Salikhov T. K. , Sapiev E. , Salikhova K. S.
Published: November 2024

Rational use and protection of soils in market conditions requires adequate application of new scientific and methodological approaches. One of these systems-analytical methods of soil inventory organization is combination of traditional ground methods with technologies of geographic information systems (GIS) based on wide use of aerospace images of different resolutions. As a result of the research, a method of soil mapping using ArcGIS software was developed that is practically accessible to a wide audience of GIS users. Using GIS technology, a digital soil map based on scanned soil maps of Zhanakush rural district of Chingirlau district in West Kazakhstan region was developed.
BIOLOGICAL AND CHEMICAL PROPERTIES OF A SOIL COVER OF GEOECOSYSTEMS OF AKSHAT RURAL DISTRICTS
Authors: Salikhov T. K.
Published: November 2024

As a result of researches morphological signs of soils, biological and chemical properties of a soil cover of geoecosystems are defined: volume and density of a firm phase, volume weight, a structure of an arable layer, the humus maintenance, accessible elements of soil, stocks of elements of the food, the absorbed bases, the maintenance of ions in a water extract. The studied data shows that the subtype of meadow ordinary black earth soil on a chemical-ism salted corresponds to a sulphatic sort, and under the maintenance of readily soluble salts a kind, is characterized as not salted, and therefore they can be used for development of irrigated crop rotations.
DYNAMICS OF CHANGES IN THE KINETIC PARAMETERS OF THE WWR-K RESEARCH REACTOR CORE WITH LOW-ENRICHED FUEL UNDER THE GRADUAL REPLACEMENT OF THE WATER REFLECTOR BY BERYLLIUM REFLECTOR
Authors: Sairanbayev D. S. , Koltochnik S. N. , Shaimerdenov A. A. , Nakipov D. A. , Kenzhin Y. A.
Published: November 2024

In 2015 the main reactor systems were modernized, including complete replacement of the control&instrumentation system within the conversion of the reactor WWR-K to low-enrichment fuel. The new reactor core configuration became compact and more energy-intensive; the character of fuel burn-up has changed. The number of C&I operating elements and their geometric parameters have been changed. According to the concept of the reactor WWR-K conversion, the water reflector is planned to be gradually replaced by beryllium one during the first year of operation, which is associated with the change in the neutron-physical characteristics of the reactor. This paper is intended to determine the kinetic parameters of the reactor WWR-K associated with the formation of the beryllium reflector. The correct operation of C&I assumes the input of the core kinetic parameters values into the system, such as effective fraction of delayed neutrons, lifetime of instantaneous neutrons. This paper is devoted to determining the values of these parameters and the dynamics of their changes during the reactor operation.
INFORMATION SECURITY OF INFORMATION AND MEASURING SYSTEM OF THE IVG.1M REACTOR
Authors: Yermakov V. A. , Serikbayev B. S. , Ilinykh S. A. , Korovikov A. G.
Published: November 2024

Currently, the quantity and importance of information systems (IS) at the enterprises is increasing and user’s confidence for their application has to increase as a consequence. However, technology does not solve all the problems itself, therefore there is a need for well-defined security strategy of IS to ensure privacy, integrity, availability, reliability and adequacy of information. This paper set the task to secure information in measuring system of IVG.1M reactor facility from unauthorized access. Example of information system security opens a complex approach to information security and presents joint organizational and engineering measures. The article performs analysis and classification of information system, determines the requirements for its security. Based on analysis, special means of protection as well as organizational measures applicable for the system are defined. Conclusion reflects results of such approach application for the security.
THE DEGREE OF INFLUENCE RADIATION FROM MOBILE PHONES ON THE QUALITY OF EPR SPECTRA
Authors: Zhumadilov K. Sh. , Ivannikov A. I. , Abyshev B. K. , Stepanenko V. F. , Hoshi M.
Published: November 2024

The results of the investigation of the effect of mobile phone radiation on the formation of electron paramagnetic resonance (EPR) spectra and electromagnetic noise on the example of measurements of dental enamel samples for the low dose range are presented. To this end, spectra of irradiated dental samples were obtained. The spectra of ten samples irradiated in nominal doses of 0, 100, 200, 300 and 500 mGy in pairs were registered at different times with and without a mobile phone. The mobile phone was located near the resonator of the EPR spectrometer. Specially software was used to extract the radiation-induced signal (RIS) from the full EPR spectrum and determine its intensity. As mentioned above to study the effect of the mobile phone signal on the EPR signal in this study, the radiation signal (RIS) (standard deviation (SD)) will be estimated by the background signal and the residual amount. These parameters were obtained for single measurements and, on average, for four repeated measurements.
STRUCTURAL CHARACTERISTICS OF THE CONSTRUCTION MATERIAL AS THE CONSEQUENCE OF THE IMPACT OF INTEGRATED FACTORS
Authors: Mukashev K. M. , Muradov A. D. , Umarov F. F. , Yar-Mukhamedova G. Sh.
Published: November 2024

The paper presents the results of a study of the radiation damage of stainless steel 10Х18Н10Т-ВД, which has the symbol EP-502. Radiation properties of steel were studied by the method of positron spectroscopy. The main structurally sensitive parameter was the probability of redistribution of positron annihilation between conduction electrons and bound electrons of matrix atoms. The object of the study was subjected to a complex effect of various factors. The main ones are melt processing of liquid metal lithium at 600 °C for 1000 hours from annealed, unstressed and stressed states. The next stage of the study was to study the structural characteristics of steel after saturation with hydrogen from these earthquakes. Lastly, metal was exposed to electrons and neutrons at fluences 1018 and 1019 cm-2 at a temperature of no higher than 70 °С. The results of the investigations made it possible to establish the ambiguity of the influence of molten lithium on the radiation damage of stainless steel and its moderate aggressiveness on the corrosion processes of steel.
CHANGES IN THE ELECTRICAL RESISTIVITY AND MAGNETIZATION OF NON-IRRADIATED AND IRRADIATED Х18Н9 STEEL IN DEFORMATION AND ANNEALING PROCESSES
Authors: Maksimkin O. P. , Nurgali Y. Y.
Published: November 2024

The results of experiments on the study of deformation and thermal changes in the electromagnetic properties of austenitic steel Х18Н9 subjected to neutron irradiation in a WWR-K nuclear reactor are presented and discussed. Particular attention is paid to the direct and inverse phase martensitic transformation. The effect of an additional increase in the amount of the ferromagnetic a-phase during annealing (~450°С) of irradiated, deformed at negative temperatures (-20 and -60 °C) of reactor steel is observed.
SEISMO-TECTONICS OF EASTERN TIEN-SHAN AND DZHUNGARIYA
Authors: Abdrakhmatov K. E. , Mukambayev A. , Grützner C. , Campbell G. , Walker R. T. , Mackenzie D. , Jackson J. , Ashirov B. M. , Aytmyrzayev Zh. S. , Szhanabilova S. O. , Yeldeyeva M. S.
Published: November 2024

It was demonstrated that within the eastern part of Northern Tien-Shan and Dzhungarya active faults with wings shifted in the late Pleistocene – Holocene have the striking different from the direction of the newest structures, mainly sublateral ones. These faults represent right-shift disjunctive structures of north-western strike. They are the responsible ones for modern seismic situation at the investigated territory.
SEISMOLOGICAL NETWORK OBSERVATIONS IN CENTRAL ASIA
Authors: Nepeina K. S.
Published: November 2024

In this paper, seismic monitoring systems in Central Asia are presented. The description, some characteristics and history of creation of the stations entering into national seismic networks of monitoring are given. A review is provided for stationary and temporary systems for recording earthquakes and nuclear explosions for the period of up to 2018 and their use when solving various tasks in research projects.
LOCATION AND IDENTIFICATION OF SEISMIC EVENTS AROUND NORTH KOREAN NUCLEAR TEST SITE FOLLOWING THE 3 SEPTEMBER 2017 UNDERGROUND NUCLEAR TEST
Authors: Kim W.-Y. , Schaff D. , Richards P. G.
Published: November 2024

At least thirteen small seismic events that occurred close to and following the North Korean underground nuclear test (UNT) on 3 September 2017 were detected and located by using seismic waveform data from regional stations. Other than the first event, widely reported to be a cavity collapse, the magnitudes of these shocks range from 2.3 to 3.6. Based on their timing, and proximity to the UNTs, these shocks may be considered as aftershocks. They are located within 1 km of each other with small relative location errors, approximately 50 m. We assess a method to classify each of these small events separately based on their spectral amplitude ratios derived from regional P- and S-waves. We examine additional possible small seismic events around the North Korean test site by using seismic data from stations in South Korea, Russia, and northeastern China including IMS seismic arrays, GSN stations, and national network stations. A linear discriminant function based on Mahalanobis methods applied to P/S spectral ratios does a better job of screening events than does a simple average of such ratios.
CHARACTERIZING AND MODELLING OCEAN AMBIENT NOISE USING INFRASOUND NETWORK AND MIDDLE ATMOSPHERIC MODELS
Authors: De Carlo M. , Le Pichon A. , Ardhuin F. , Näsholm S. P.
Published: November 2024

Infrasound is one of the technologies of the International Monitoring System (IMS) supporting the verification regime of the Comprehensive Nuclear-Test-Ban Treaty (CTBT). In the frequency band of interest to detect atmospheric explosions, ambient noise may affect detection and particularly ocean noise referred to as microbaroms. Ocean wave interactions generate acoustic noise almost continuously which can obscure signals of interest in their frequency range. The detectability of such noise strongly depends on atmospheric conditions along the propagation paths. Using ocean wave action model developed by IFREMER and considering the effects of general middle-atmospheric products delivered by ECMWF in long-range propagation, microbarom amplitudes and direction of arrivals derived from various propagation models are compared with the observations. With this study, it is expected to enhance the characterization of the ocean-atmosphere coupling. In return, a better knowledge of microbarom sources would allow to better characterize explosive atmospheric events hidden in the ambient noise.
INVESTIGATION OF THE RESPONSE OF THE MICROSEISMIC BACKGROUND TO GEOMAGNETIC IMPULSES AT THE MID-LATITUDE OBSERVATORY “MIKHNEVO”
Authors: Riabova S. A.
Published: November 2024

The response of the seismic background to pulsed geomagnetic variations is investigated for the conditions of the midlatitude Geophysical observatory “Mikhnevo” of the Institute of Geosphere Dynamics of the Russian Academy of Sciences. During the impulse variations of the magnetic field of SSC- and SI-types, in most cases, increased variations of the seismic background are observed in the frequency range of 0.01–0.1 Hz (in some cases, 0.001–0.1 Hz). The application of methods of statistical data processing made it possible to establish that it is the perturbation of the geomagnetic field that entails a change in the microseismic background and with some delay. The significant correlation between the amplitude of the geomagnetic impulse and the amplitude of the induced variations of the seismic background was established and the quantitative relationship between them was obtained. The analysis showed that after the geomagnetic impulse with a short delay in the behavior of the magnetic tipper module, “jumplike” changes (i.e., a change in the magnitude of the induced electric currents) are observed.
THE IMPLEMENTATION OF ALGORITHMS OF FLOW CONVOLUTION ON THE BASIS OF PROGRAMMABLE LOGIC DEVICE (PLD)
Authors: Hairetdinov M. S. , Ostapkevich M. B. , Minahudin R. F.
Published: November 2024

In connection with introduction of network technologies of data acquisition in systems of active geophysical monitoring of environment medium methods and algorithms of the operative analysis of data in rate of their receipt is actual. As an example algorithms serial cross-correlation convolution of data in systems of active monitoring of environment with application of the seismic and acoustic oscillations generated by seismic vibrators are considered. The vibrators find more and more wide application in deep seismic sounding of the Earth, acoustic monitoring of atmosphere, etc.
CALCULATED STUDY OF NEUTRONIC CHARACTERISTICS OF EXPERIMENTAL DEVICES
Authors: Zhagiparova L. K. , Kotov V. M.
Published: November 2024

The article presents calculated study of the neutronic characteristics of the experimental device (ED) designed to simulate the residual energy release in the melt trap due to neutron irradiation [1]. The relations of energy release in the melt in different variants of traps filling to the energy release in the reactor are estimated. Proposals for optimal physical start-up have been developed.
CONTROL OF HEAVY METALS CONTENT IN THE HAIR OF THE PEOPLE OF THE CITY OF UST-KAMENOGORSK
Authors: Ospanova Zh. A. , Kabdrakhmanova S. K. , Troeglazova A. V. , Zainelova G. Z. , Pavlenko A. V. , Vnorovskaya E. V.
Published: November 2024

In this article, human hair is regarded as a bio-indicator of the toxic metals pollution degree of the environment. According to earlier studies, it is established that the life expectancy of a person and his work activity directly near the sources of pollution affect the level of heavy metals concentration in his body. The content of heavy metals in hair usually reflects their content in other tissues of the body [1]. In the presented study, hair samples were taken from workers of tantalum production of JSC Ulba Metallurgical Plant. Studies were conducted according to the established method [2]. Concentrations of toxic elements (Ni, Cu, Pb, Cd) were determined with the help of the atomic absorption spectrometer MGA-915 (JSC Lumeks, Russia). Preliminary conclusions are drawn about the dependence of the content of certain toxic elements in the hair tissues of workers on the duration of their labor activity on harmful tantalum production.
CALCULATION AND EXPERIMENTAL DETERMINATION OF REACTIVITY MARGIN REQUIRED FOR IGR REACTOR START-UP
Authors: Vurim A. D. , Gaidaichuk V. A. , Kotlyar A. N. , Kozlovskyi Ye. V. , Miller A. A. , Olzhaev I. T. , Zhurkin S. A. , Tskhe V. K.
Published: November 2024

An approach to the implementation of IGR reactor start-up is proposed, which increases the safety of reactor tests by reducing the number of working bodies (control rods) of CPS involved in the work. Based on a set of experimental data, connections between the parameters of the reactor power scheme and the reactivity necessary for its implementation are determined. The correctness and effectiveness of the proposed approach is checked in practice.
STRUCTURAL TRANSFORMATION IN THE STEEL 20GL AFTER ELECTROLYTE PLASMA SURFACE HARDENING
Authors: Rakhadilov B. K. , Baizhan D. R. , Sagdoldina Zh. B. , Kenesbekov A. B.
Published: November 2024

The present work is devoted to the investigation of the effect of the electrolyte-plasma surface hardening process on the structure and properties of 20GL steel used for the preparation of railroad products (the supertor bar and the side frame). The electrolyte-plasma surface hardening process was carried out in an electrolyte from an aqueous solution of 20% sodium carbonate in the following mode: the applied voltage between the anode and the sample when heated to a quenching temperature of 320 V, the heating time by electrolytic-plasma exposure of 2 s and 3 s, ~ 850 °С. The results of a study of the structure of the sample showed the lines of the α phase and the weak reflexes of cementite and oxide. The thickness of the modified layer was 500–550 μm. The results of the study of the mechanical properties of the sample showed a slight increase in the microhardness, but a significant increase in wear resistance of the 20GL steel sample after treatment.
VARIOUS MODELS OF DESTRUCTION OF POLYMERIC MATERIALS AND COMPOSITES BY ELECTRON BEAMS
Authors: Kupchishin A. I. , Taipova B. G.
Published: November 2024

The work is devoted to the study of the effect of various fillers and electron irradiation on the physico-mechanical properties of a number of composite films; fracture models are proposed. A composite material based on polyimide (PI) with various concentrations of the second component: polyethyleneterephthalate, polycarbonate, montmorillonite, hightemperature superconductor, and a polyimide film metallized on both sides was investigated. Samples obtained by the method of mechanical mixing based on polyimide varnish and solutions of the second component. The irradiation was carried out on an electron linear accelerator of the type ELU-6 in air at 25 °C with an energy of 4 MeV. It has been established that the introduction of PET, PC, MM and HTSC fillers makes it possible to obtain materials with desired properties. The concentration of the additive, the features of its internal structure, as well as the technology of synthesis determine the features of the physic mechanical properties of the resulting composite materials. Electron irradiation causes an improvement in the mechanical properties of some composites, while in others, their deterioration. Various models have been proposed for uniaxial loading of materials and an exponential model gives the best agreement with experiment.
X-RAY STUDIES OF IGR REACTOR GRAPHITE
Authors: Bukina O. S. , Kukushkin I. M. , Skakov M. K. , Sitnikov A. A. , Yakovlev V. I.
Published: November 2024

The conversion of research reactors to low-enriched uranium (LEU) fuel is assumed on the base of the National Nuclear Center of the Republic of Kazakhstan. The high-enriched uranium (HEU) fuel will be down blended up to the condition that prevents proliferation of nuclear weapons. Material testing have been carried out in order to determine the properties of non-irradiated HEU fuel important for transportation and future down blending of the fuel. Non-irradiated IGR reactor HEU fuel will be used for fuel down blending method development. LEU fuel was studied to obtain information about properties for comparison with HEU fuel. Determination of structural and phase analysis of material is one of the key point in material studies of IGR reactor fuel. Literature overview revealed the absence of technical standard documentation specifying requirements for structural specifications of graphite of uranium-graphite fuel and, correspondently, for application of X-ray structural analysis to define graphite structural specifications. The paper presents main results of material research and focused on analysis of x-ray specifications of uranium-graphite fuel. The progress report was presented at VIII International Conference “Semipalatinsk Test Site: Legacy and Prospects for Scientific and Technical Potential Development”.
LEACHING OF MAN-MADE RADIONUCLIDES FROM SOIL IN THE STS TERRITORY AS ONE OF THE MAIN CONTAMINATION MECHANISMS OF NATURAL WATER
Authors: Bogatyryova T. Yu. , Aidarkhanova A. K.
Published: November 2024

The articles gives experimental data on 3Н, 90Sr, 239+240Pu, 137Cs leaching from soil of various contaminated areas of the Semipalatinsk test site to natural water. Leaching degree has been determined. Leaching process of radionuclides from soils to natural water is noted to be one of the main contamination mechanisms, which is quantitatively characterized by leaching degree. Leaching of radionuclides from soils of STS sites of interest is not dependent on soil contamination level. It is found that le4aching process of radionuclides is characteristic of each site but its intensity for different radionuclides is not the same. This is due to chemical properties of radionuclides and their speciation in soil.
ANALYSIS OF PUBLICATIONS ABOUT SEMIPALATINSK TEST SITE USING DB WEB OF SCIENCE AND CITESPACE PROGRAM
Authors: Busygina T. V. , Rykova V. V.
Published: November 2024

Construction of Semipalatinsk Test Site (STS) at the territory of East Kazakhstan was initiated in 1947. During military and civil tests conduction a large amount of valuable information was accumulated, the major part of which remained classified. In 1991 after USSR collapse the test site was closed by N. Nazarbayev, the President of Kazakhstan, Decree # 409. Since that time STS became the object for study of consequences of radioactive contamination in environment, seismic activity during explosions. The current paper includes scientometric analysis of information array on STS, presented in the largest international database Web of Science (WoS).
CHANGE OF MAGNETIC PROPERTIES OF IRRADIATED NEUTRONS AND ELECTRONS OF AUSTENITIC STEELS IN THE PROCESSES OF MECHANICAL AND TERM RELAXATION OF INTERNAL ELASTIC STRESSES
Authors: Maksimkin О. P. , Merejko M. S. , Оtstavnov M. A.
Published: November 2024

The effect of irradiation with neutrons and electrons, as well as temperature effects on stress relaxation processes in austenitic nickel-chromium steels has been investigated. The effect of an increase in the content of the ferromagnetic phase in irradiated samples deformed at cryogenic temperatures and annealed in the temperature range of 400 °C was found.
OPTICAL RESEARCHES OF UNIRRADIATED, POLLUTED AND IRRADIATED BIOMATERIALS
Authors: Kupchishin A. I. , Esyrev O. V. , Hodarina N. N. , Taipova B. G. , Zubareva T. I.
Published: November 2024

The optical properties of the unirradiated and irradiated series of biomaterials of the lake-reservoir Sorbulak were investigated. Samples are made from biomaterials of Sorbulak Lake (polluted) and growing near a nearby flowing river (unpolluted). The study of the optical properties and structure of irradiated and non-irradiated samples of reeds, sedges for reflection and lumen was carried out on an automated digital microscope (ACM) of the type Leica DM6000M. Experimental samples were prepared in the form of tubes (cut from stems) and leaves. The dose of electron irradiation is 50–500 kGy. Analysis of the data showed that simultaneous contamination and electron irradiation of biomaterial samples leads to blurring of material bands, which is associated with the accumulation of heavy metals and the generation of resistant radiation defects such as a Frenkel pair and an electron-ion pair, which subsequently lead to cell destruction and destruction of the biomaterial.
THE STUDY OF THE DEFORMATION OF THE PLEXIGLAS BENDING IRRADIATED WITH ELECTRONS
Authors: Kupchishin A. I. , Niyazov M. N. , Taipova B. G. , Abdukhairova A. T. , Yar-Mukhamedova G. Sh.
Published: November 2024

Experiments were carried out on the dependence of strain on stress in the test for a flat straight bend of samples of non-irradiated and irradiated corrugated Plexiglas. It is found that with increasing voltage the relative elongation of corrugated samples of Plexiglas (both non-irradiated and irradiated) increases linearly. It is revealed that the irradiation leads to a noticeable change in the deformation-strength characteristics of the material, manifested in a decrease in plasticity. Elongation striped acrylic plastic after irradiation is changed to 20 %, and the pyramid – 40 %. In this case, the strength change does not occur. The obtained curves of lgt versus Ơ are satisfactorily described in the framework of the linear model.
NUCLEAR REACTOR CORIUM PROPERTIES OBTAINED AT IGR RESEARCH REACTOR
Authors: Skakov M. K. , Mukhamedov N. Ye. , Pakhnits A. V. , Deryavko I. I.
Published: November 2024

In the paper for the first time thermophysical properties (specific heat capacity, thermal diffusivity and thermal conductivity) of natural corium of a fast nuclear power reactor were determined in the temperature range from room one up to ~400 °С. The obtained data is oriented at use in temperature field calculations when modeling the processes of corium melt retention in fast nuclear reactor vessel.
ADAPTATION PROCESSES IN BIOCOENOSES OF CONTAMINATED PLOTS OF THE SEMIPALATINSK TEST SITE
Authors: Plisak R. P. , Plisak S. V.
Published: November 2024

The article presents results of adaptation processes of main types of ecosystems (steppe, meadow, halophytic) and various types of disturbed ecosystems territories of the Semipalatinsk test site (STS). It was found that radiation pollution provokes change of morphological and anatomical structure of plants and leads to formation of some adaptation signs. Formation of adaptation signs of perennials and shrubs is expressed more clearly. Change of morphological and anatomical structure of plants happens more often in meadow (mesophyte) communities and at disturbed areas.
STUDYING OF CHANGES IN PHYSICAL AND MECHANICAL PROPERTIES OF MATERIALS OF COMPLETED FA OF THE BN-350 REACTOR UNDER CONDITIONS OF LONGER THERMAL AGING
Authors: Kozhakhmetov Ye. A. , Koyanbaev Ye. T. , Sapataev Ye. Ye. , Mukhamedzhanova R. M. , Beldeubaev A. Zh.
Published: November 2024

The paper presents results of tests of irradiated samples of material from various SFAs of BN-350 RP under conditions of prolonged and constant exposure to temperature and mechanical load. The dependencies of strength characteristics of SFA material samples made of 12X18H10T steel on temperature and constant load were determined through short-term uniaxial tensile tests. The nature of the fracture of the SFA material samples was investigated before and after the tests.
CHANGES IN PHASE COMPOSITION AND STRENGTH PROPERTIES OF 12Cr18Ni10Ti AUSTENITIC STEEL AS A RESULT OF DEFORMATION AND POST-DEFORMATION ANNEALING
Authors: Tsai K. V. , Rofman O. V. , Otstavnov M. A.
Published: November 2024

The results of experiments studying the peculiarities of changes in both phase composition and mechanical properties of austenitic 12X18H10T stainless steel, unirradiated and irradiated with neutrons, subjected to low-temperature deformation and post-deformation annealings in the temperature range 300–800 °C are discussed. The features of the formation and growth of the martensitic-phase during deformation and annealing are investigated. The dependence of the α´-phase content on microhardness of austenitic steel is considered.
PRESENCE OF TECHNOGENIC STRUCTURES IN NATURAL ELECTRICAL FIELD
Authors: Bakhtin L. V. , Romanov A. M. , Tokaev D. N.
Published: November 2024

A methodology of self-potential that allows to confidently detect sites of underground water movements, including the ones near the foci of underground nuclear explosions (UNE), based on the contrast and intensity of self-potential features, has been developed. The main features of distribution are the decrease of self-potential values at the sites of the source and narrowing of the underground water flows and increase of self-potential values at the sites of slowness and widening of these flows. At the UNE sites the nature of self-potential is complicated – linearly stretched in different directions, often – mosaic one. In a number of cases ring structures co-concentric with the UNEs foci have been noted.
DISTRIBUTION OF GASEOUS TRITIUM AT UNDERGROUND NUCLEAR EXPLOSION SITES OF SEMIPALATINSK TEST SITE
Authors: Apenko A. V. , Romanov A. M. , Tokaev D. N. , Frolov Z. N.
Published: November 2024

According to the results of an area survey of tritium exhalation in a number of sites at the Semipalatinsk Test Site, three main types of increased tritium activity distribution have been established: 1 – linear-mosaic at the sites of weak and virtually absent disturbances of geological structures by nuclear explosions outside the sites of explosions; 2 – mostly linear, connected with the natural faults, intensely renewed by the explosions at the sites of explosions; 3 – ring ones, connected with technogenic (ring) structures, occurred directly by the explosions. Usually the distributions of tritium of the second and the third types are detected together. A great stability of results and the depth of the survey of tritium exhalation has been noted in comparison with the results of radon exhalation measures. A spatial connection of abnormal increases of tritium activity with hydrodynamic structures detected by the structural geophysics methods has been established. The advantage of using the method of gaseous survey of tritium activity to confirm the connection of hydrodynamic structures with the foci of underground nuclear explosions has been proved.
INFLUENCE OF THE THERMACYCLING PROCESS ON THE STRENGTH PROPERTIES OF THE LEU AND HEU FUEL OF IGR REACTOR
Authors: Dauletkhanov Ye. D. , Sapataev Ye. Ye. , Kozhakhmetov Ye. A. , Mukhamedzhanova R. M. , Beldeubaev A. Zh. , Urkunbay A. S.
Published: November 2024

This article discusses the results of mechanical testing of highly enriched uranium (HEU) and low enriched uranium (LEU) fuel materials of the IGR reactor after thermal cycling at different temperatures and the quantity of “heating-cooling” cycles. The strength changes in characteristics of LEU and HEU fuel were determined depending on the thermal cyclic test modes.