Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu最新文献

{"title":"Evaluation of coal mines’ rock mass gas permeability in the equivalent stress zone","authors":"O. M Shahsenko, V. A Cherednyk, N. V Khoziaikina, S. M Hapieiev","doi":"10.33271/nvngu/2023-5/060","DOIUrl":"https://doi.org/10.33271/nvngu/2023-5/060","url":null,"abstract":"Purpose. Based on a comparative analysis of the internal mechanism of shape change of rock samples, which were loaded in specified deformations mode, and geomechanical and gas-dynamic processes in coal mass, to establish a causal link between these phenomena. To qualitatively characterise their gas permeability as a function of the rock’s volume expansion. To justify the possibility of using a full “stress-strain” diagram as a technogenic methane deposit formation model and its spatial localisation. Methodology. Theoretical research is based on using the solid mechanic constitutive principles and results of studying the rock samples failure in the mode of specified strains. Findings. The ability to use a full “stress-strain” diagram for detecting and localising methane reservoirs during the coal seams excavation was proved during the research. It was found that the compaction threshold coincides with the bearing pressure maximum in front of the longwall face. This area corresponds to the rock mass with minimal porosity and minimal filtration, which allows considering it as an envelope of an artificial gas deposit. Regularities that connect the three-dimensional equivalent stress state with the final gas permeability of the gas-saturated coal mass were obtained. These data allow creating a predictive numerical geomechanical model of methane migration paths. Originality. The ability to use a full “stress-strain” diagram in the controlled strain mode for numerical modelling of gas permeability of a methane-saturated coal mass during the mining of coal seams and the determination of technogenic gas deposit boundaries are justified. Dependences of the current and final gas permeability on the rock’s mechanical characteristics in a post-peak strain state are obtained. Practical value. Functional dependencies based on geomechanical models are obtained that allow the identification and localisation of technogenic methane reservoirs in mines during coal seam excavation, with subsequent utilisation of the extracted gas. Furthermore, methane removal enhances mining safety by reducing the risk of gas dynamic phenomena while decreasing gas emissions into the atmosphere contributes to reducing the greenhouse effect.","PeriodicalId":19101,"journal":{"name":"Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu","volume":"266 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136103732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radionuclide content in vegetation and soils in the impact zone of the railway track","authors":"P. V Bosak, N. H Lukianchuk, M. M Nazaruk, V. V Popovych, V. S Kucheryavyy","doi":"10.33271/nvngu/2023-5/108","DOIUrl":"https://doi.org/10.33271/nvngu/2023-5/108","url":null,"abstract":"Purpose. To identify the harmful radiation impact of railway transport on the environment. Methodology. In order to determine the level of radioactive contamination in the impact zone of the railway, soil and plant samples were collected, and relevant radiometric studies were carried out in accordance with the established and approved methods. The peculiarities of the accumulation capacity of plants and soil were investigated and graphical models of radionuclide migration on the Lviv-Sambir railway section were created. Findings. Measurements of the specific activity of 90Sr and 137Cs in plant samples along the railway track showed that grass plants have a lower content of radionuclides and trees have a higher one. It was found that among the herbaceous plants, the species Galium odoratum (L.) Scop. accumulates radionuclides 90Sr most intensively, Geum urbanum L. accumulates 137Cs. These plants can be used as indicators of the territory contaminated with radionuclides. The highest content of radionuclides in tree species is observed in the leaves of grey alder and oak bark. The highest content of K 40 was observed at a distance of 200 m from the railway track, and the lowest content of Th 232 was observed at a distance of 100 m from the railway track. Originality. The results of the research showed a significant variation in the content of radioactive substances in the soils of protective forest plantations. This variation in soil contamination can be explained by the heterogeneity of the above-ground cover and the local impact of plantations on the contaminants’ airborne transport rate. Practical value. Taking into account the fact that the concentration of radionuclides in plants and soil decreases away from the railway tracks, we can state that protective forest plantations delay the spread of the existing radionuclide content to the territories adjacent to the tracks.","PeriodicalId":19101,"journal":{"name":"Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu","volume":"32 S1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136104149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smart contracts and business process automation: the technical aspect","authors":"I. A Chikov, S. V Koliadenko, V. A Supryhan, O. I Tabenska, V. S Nitsenko, O. V Holinko","doi":"10.33271/nvngu/2023-5/186","DOIUrl":"https://doi.org/10.33271/nvngu/2023-5/186","url":null,"abstract":"Purpose. To analyze the process of implementing smart contracts for the automation of business processes, aimed at achieving high reliability and cybersecurity during contract execution, optimizing transaction costs, and maximizing the productivity of the enterprise’s internal operations. Methodology. The research results were obtained using special and general methods of scientific knowledge, namely descriptive, comparative, strategic analysis, abstract-logical and generalization. Findings. The study revealed the potential of smart contracts based on blockchain technology to improve business process efficiency, reduce costs, and ensure innovative development in the Ukrainian business environment. Originality. A comprehensive analysis of the technical aspects of using smart contracts based on blockchain technology to automate business processes has been conducted; their impact on the business environment has been assessed; a comparison of popular programming languages and blockchain platforms for the development and deployment of smart contracts has been made; a SWOT-analysis of the implementation of smart contracts at Ukrainian enterprises has been carried out, which opens up prospects for innovative approaches to business practices and their optimization. Practical value. The results of the study can be used to develop and implement innovative strategies in a business environment based on the integration of smart contracts based on blockchain technology in order to improve the efficiency of business processes.","PeriodicalId":19101,"journal":{"name":"Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu","volume":"21 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136104323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The legal mechanism for environmental protection in Ukraine","authors":"V. I Truba, O. O Bernaziuk, S. S Yesimov, N. M Zilnyk, M. I Tarnavska","doi":"10.33271/nvngu/2023-5/114","DOIUrl":"https://doi.org/10.33271/nvngu/2023-5/114","url":null,"abstract":"Purpose. To study the aspects of implementing the legal mechanism of environmental protection (LMEP) and the requirements for it. To propose a definition of the “LMEP” concept. To develop recommendations for improving the legal mechanism, propose measures for its implementation and determine its main components. Methodology. The study uses general and special methods of cognition: comparative analysis – to establish LMEP indicators; critical analysis – for formation of requirements for LMEP and its definition; abstract-logical analysis – to determine the need for strategic dynamic approach to the implementation of LMEP; induction and deduction – to offer tool of “feedback” between the implementation of legal norms, and the effectiveness of their practical implementation; logical abstraction - for development of recommendations improving LMEP, measures for its implementation, its components, and the codification of environmental legal provisions. Findings. The requirements for the LMEP implementation are specified. Indicators for evaluating the LMEP effectiveness are proposed. “Feedback” tool between the implementation of environmental and legal norms and the effectiveness of their practical implementation and mechanism for the gradual adaptation of these norms are proposed. The definition of the concept “legal mechanism of environmental protection” is proposed. The absence of systematic approach and the insufficiency of analytical work at the stage of preparation of normative legal acts and after their adoption are pointed out. Specific ways of solving this problem are proposed. In order to prevent offenses, the need to increase the role of administrative justice in environmental protection cases and to expand the application of administrative law for this purpose is indicated. Originality. The necessity of forming a strategic dynamic approach to the implementation of LMEP and adjusting the adoption of its stages in view of the effectiveness of tools for the development of legal and environmental awareness of citizens is indicated. Practical value. The proposed regulatory clarification of the concept of “significant damage” will strengthen compliance with the principle of matching the violation with the punishment.","PeriodicalId":19101,"journal":{"name":"Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136103735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of the geotectonic regime on property formation of coal in the northern edges of the Donetsk basin","authors":"V. S Savchuk, V. F Prykhodchenko, D. V Prykhodchenko, N. V Khomenko","doi":"10.33271/nvngu/2023-5/012","DOIUrl":"https://doi.org/10.33271/nvngu/2023-5/012","url":null,"abstract":"Purpose. To determine the influence of the geotectonic regime during accumulation of carbon formation on development of coal-bed properties of the northern Donbas. Methodology. To perform the tasks set, a number of research methods were used which include petrographic, chemical and technological, facies and tectonic, computational, statistical and analytical, informational, chronological, genetic, comparative and other methods. Findings. The effect of the geotectonic regime on the formation of coal properties has been established. It is proved that the change in the number of maceral groups is of a regular nature. The reduction in the number of maceral groups of liptinith and irtinitis, in the light of the increase in the number of maceral wind group, is taking place in the direction of the growth of the total amplitude and average speed of the oscillating movements of the Earth’s crust during the accumulation of carbon formation. Originality. Coal formation is considered regarding a unified geodynamic perspective as an integral part of a complex set of natural processes that accompanied the development and interaction of deep structures (plates) of the lithosphere. The main attention is paid to the peculiarities of the composition and quality of coal formed under geodynamic conditions with different motion nature of the lithosphere. For the first time, comparative analysis of the coal-bearing formation of the middle Carboniferous period of the Old and Northern Donbas has been performed. Detailed petrographic and chemical-technological characteristics are given to the coal seams of the Northern Donbas. The peculiarities of the composition and quality of the coal of the deltaic-bog-marine formation have been determined for the first time compared to the coal of other formations of the Middle Carboniferous. Practical value. Regional (“provincial”) peculiarities of coal composition and quality of deltaic-bog-marine and alluvial-bog- marine formations of northern Donbas regions have been defined, which will allow substantiating the directions of its rational use. The proposed approach makes it possible to predict coal content as well as composition and quality of coal in the areas of distribution of bituminous coal. The expediency and prospects of adding the coal of northern Donbas to the fuel base of Ukraine are proven.","PeriodicalId":19101,"journal":{"name":"Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu","volume":"537 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136103914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geophysical indicators of rare-metal ore content of Akmai-Katpar ore zone (Central Kazakhstan)","authors":"Z Ablessenova, L Issayeva, K Togizov, S Assubayeva, M Kurmangazhina","doi":"10.33271/nvngu/2023-5/034","DOIUrl":"https://doi.org/10.33271/nvngu/2023-5/034","url":null,"abstract":"Purpose. Identification of geophysical criteria to determine ore content indicators within the territory relying upon systematization of both geological and geophysical materials. Methodology. The research involved innovative techniques used in the field of geology, i.e. GIS technology, and such theoretical scientific approaches as analysis and synthesis of petrophysical data, and data of geophysical anomalies in the context of the analyzed ore zone. Findings. Petrophysical characteristics of Akmai-Katpar ore zone rocks have been generalized and systematized. Petrophysical model of the ore zone has been developed; changes in petrophysical rock characteristics have been defined in terms of Silurian, Devonian, Carboniferous, and Permian systems. The obtained parameters of the petrophysical model are integrated with the identified geophysical anomalies. Geophysical indicators of ore content of the rare-metal ore zone have been determined. Cartographic documents have been specified which made it possible to perform layer-by-layer mapping of Akmai-Katpar ore zone. Originality. For the first time, the systematized geological and petrophysical materials have been applied to build the petrophysical model of Akmai-Katpar ore zone and improve geophysical forecasting criteria. Practical value. It consists in the use of geophysical forecasting criteria while identifying prospective areas where rare metals occur.","PeriodicalId":19101,"journal":{"name":"Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136104224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prospects for the detection of structures with hydrocarbon deposits along the geotraverse in the Shu-Sarysu sedimentary basin","authors":"A Tleubergenova, V Portnov, O Karpenko, A Maussymbayeva, R Madisheva","doi":"10.33271/nvngu/2023-5/027","DOIUrl":"https://doi.org/10.33271/nvngu/2023-5/027","url":null,"abstract":"Purpose. To study the paleogeographic situation of the Shu-Sarysu sedimentary basin and its relationship with the accumulation of hydrocarbons. Methodology. Analysis of lithological and paleogeographic maps, starting from Devonian time (D3fm) and ending with the Upper Permian period (P2), compiled by U. Akchulakov, H. H. Paragulkov, geological and geophysical databases (seismic, gravity, magnetic exploration) on proven hydrocarbon accumulations to assess the detection of possible promising areas of the Shu-Sarysu sedimentary basin. Findings. The regularities of hydrocarbon accumulation obtained based on a comparative analysis of open deposits and promising areas within the Shu-Sarysu geotraverse are justified by the fact that the accumulation of hydrocarbons occurred in zones that, as a result of paleogeographic evolution, are distinguished as territories belonging to alluvial-delta plains periodically flooded by the sea, salt lagoons. Originality. As a result of the conducted studies using actual data, a forecast assessment of the prospects for the presence of hydrocarbon deposits at sites within the Shu-Sarysu geotraverse was obtained. Practical value. Forecast is substantiated of the possibility of detecting hydrocarbon accumulations in areas previously assessed as ones of little or no promise in the Shu-Sarysu sedimentary basin.","PeriodicalId":19101,"journal":{"name":"Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136104239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Liquefaction of industrial zone against earthquake loading using laboratory and field measurements","authors":"Aram Mohammed Raheem","doi":"10.33271/nvngu/2023-5/092","DOIUrl":"https://doi.org/10.33271/nvngu/2023-5/092","url":null,"abstract":"Purpose. To assess the liquefaction of Kirkuk’s industrial region following a series of earthquakes that struck the city during the previous five years based on the current earthquake activity in the region. Methodology. Initially, substantial relationships for shear wave velocity in different types of soil were collected and studied, where the majority of these correlations necessitated the use of standard penetration tests in the field. Indeed, two boreholes were drilled up to a maximum depth of 10 m, and the numbers of blows for conventional penetration tests were measured at various depths in each borehole. The stated shear wave velocity values from the literature, as well as the maximum and lowest shear wave velocity constraints, were employed in a simple technique to estimate the cyclic shear stress induced by earthquake loading. Findings. Based on laboratory and field data, the safety factor against earthquake-induced liquefaction can be determined. When the worst-case scenario was examined using the suggested values of shear wave velocity, the factor of safety against earthquake was reduced by 94 % as the depth increased from 3.5 to 9 m. Originality. No previous study has tried to quantify the liquefaction impact of industrial zone of Kirkuk city as such an important rich-oil area was influenced by series of earthquakes occurrence. More importantly, for the first time field soil samples from on-site boreholes in Kirkuk city have been collected and used for liquefaction assessment since such real field data can be utilized properly in liquefaction evaluation process in the absence of any comparable quantification for the investigated area. Practical value. Precious liquefaction analysis should be performed prior to any proposed project construction in the light of increased earthquake activity in the industrial zone in Kirkuk city (Iraq).","PeriodicalId":19101,"journal":{"name":"Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu","volume":"191 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136102277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alternative uses for crushed stone products generated to meet the raw material needs of asphalt production in Hungary","authors":"L Ézsiás, S Fischer","doi":"10.33271/nvngu/2023-5/066","DOIUrl":"https://doi.org/10.33271/nvngu/2023-5/066","url":null,"abstract":"In Hungary, quarries that produce stone products for wearing courses of asphalt pavements also produce a significant amount of 0/4, 0/8 and 4/8 mm fractions. Because of Hungary’s pavement design and asphalt production practices, these fractions do not have a suitable market and can thus be sold on alternative markets. Purpose. To demonstrate the feasibility of using crushed fractions of 0/4 and 0/8 mm in the protection and base layers of asphalt pavements instead of sandy gravel with 0/22 mm fraction. Methodology. The CBR method was applied to evaluate the comparability of characteristics such as particle size distribution and load-bearing capacity. The combination of the Proctor and CBR tests allowed someone to compare the expected technological characteristics of the dominant and alternative aggregate types, such as their sensitivity to water and load-bearing capacity. Findings. The results demonstrated that the performance characteristics of conventionally used sandy gravel with a size of 0/22 mm can be achieved and exceeded by crushed material with much smaller maximum grain sizes – i.e., 0/4 and 0/8 mm. Originality. The paper presents an original study that contradicts the industry’s actual decline of crushed stone (0/4 and 0/8 mm fractions) for asphalt pavement protection layers. The potential effectiveness and functionality of the proposed coating are demonstrated through convincing tests, and thus new data and insights are introduced into the Hungarian construction industry’s practice. Practical value. The test results greatly helped in achieving the high demands of the private industrial project by proposing an alternative variant of crushed stone of 0/8 mm fraction rather than the originally planned dominant sand and gravel material. The asphalt paving experience on this site clearly demonstrated the viability of the alternative aggregate option for Hungarian roads.","PeriodicalId":19101,"journal":{"name":"Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136104540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combustion and detonation of paste fuel of rocket engine","authors":"S. S Vasyliv, N. S Pryadko, S. G Bondarenko","doi":"10.33271/nvngu/2023-5/072","DOIUrl":"https://doi.org/10.33271/nvngu/2023-5/072","url":null,"abstract":"Purpose. Confirmation of the possibility of using a paste fuel based on ammonium perchlorate in a rocket engine and identifying the characteristics of its combustion. Methodology. Previous experimental studies on the burning of paste fuel in a constant pressure bomb determined the burning rate at different pressures. The stability of deflagration combustion without transition to the detonation mode was confirmed. An explosion occurred during the fire test of the engine model on paste-like fuel. The analysis of the causes of the explosion made it possible to put forward a hypothesis about the enrichment of the paste fuel with ammonium perchlorate, which created the prerequisites for its detonation. The conducted additional experiments showed a change in the combustion mode when enriching paste fuel with ammonium perchlorate. Findings. Theoretical and experimental studies have shown the possibility of obtaining detonation fuel based on the enrichment of paste fuel with ammonium perchlorate. It has been proven that, under certain production conditions, paste fuels can detonate, which opens up a new way of using such fuels for rocket engines. The conditions for the transition of the burning mode of pasty fuel from deflagration to detonation combustion are determined. The speed of the engine element during the explosion was evaluated and it was shown that during explosive combustion due to the large area and, accordingly, the mass flow, it is not possible to obtain a pressure value that could ensure the movement parameters registered in this engine design. Originality. Another criterion is established of engine operability when designing an engine on paste fuel. The effect of enrichment of pasty fuel with ammonium perchlorate during its flow through the supply system at the time of start-up was revealed. Practical value. The given information makes it possible to improve the design of the engine on paste fuel and to modernize the stand for its tests.","PeriodicalId":19101,"journal":{"name":"Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136105994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}