I. Poljak, Josip Orović, Vlatko Knežević, J. Vulić
This paper presents an analysis of the low duty compressor for marine steam generators and its running conditions. The analysed low duty compressor was observed under three different running zones caused by a throttled flow towards main steam generators. All examples were explained according to real exploitation conditions. As the low duty compressor has the highest influence on the flame stability for the main steam generators while running, it is very important to observe the constant flow towards the main steam generators. Possible flow fluctuation implies instabilities which are explained in the article and the same have to be avoided in order to assure a reliable life span of the low duty compressor and smooth operation of the main steam generators. Furthermore, for preventing efficiency losses of a steam power plant, some methods for avoiding surge effects are emphasized and recommended.
{"title":"The Low Duty Centrifugal Compressor Control System and its Impact on the Surge Pressure","authors":"I. Poljak, Josip Orović, Vlatko Knežević, J. Vulić","doi":"10.18048/2019.57.03","DOIUrl":"https://doi.org/10.18048/2019.57.03","url":null,"abstract":"This paper presents an analysis of the low duty compressor for marine steam generators and its running conditions. The analysed low duty compressor was observed under three different running zones caused by a throttled flow towards main steam generators. All examples were explained according to real exploitation conditions. As the low duty compressor has the highest influence on the flame stability for the main steam generators while running, it is very important to observe the constant flow towards the main steam generators. Possible flow fluctuation implies instabilities which are explained in the article and the same have to be avoided in order to assure a reliable life span of the low duty compressor and smooth operation of the main steam generators. Furthermore, for preventing efficiency losses of a steam power plant, some methods for avoiding surge effects are emphasized and recommended.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121286691","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}
Helga Pavlić Skender, Petra Adelajda Zaninović, Elena Srića
Modern transportation technologies emerged in the mid-20th century and their appearance changed the current course of the transportation of goods. The use of modern transportation technologies in transport processes results in faster, more efficient and safer transport of goods from the sender/consignor, the manufacturer, to the receiver/consignee, consumer or customer. Container, i.e. containerization is one of the most important transportation technologies with significant impact on the development of international trade and globalization from the 1960s until present time. The aim of this paper is to review the role of containerization, as the most significant transportation technology. The results show an ever growing yet slower trend of containerization during past years that is likely to continue in the upcoming period . In the future, challenges can be expected in the container business especially in the field of digitalization and automation. This paper contributes to the valorization of containerization and points to the important role of infrastructure as a support to the realization of the potential of containerization in future.
{"title":"Review of Modern Transportation Technologies with focus on Containerization","authors":"Helga Pavlić Skender, Petra Adelajda Zaninović, Elena Srića","doi":"10.18048/2019.57.08","DOIUrl":"https://doi.org/10.18048/2019.57.08","url":null,"abstract":"Modern transportation technologies emerged in the mid-20th century and their appearance changed the current course of the transportation of goods. The use of modern transportation technologies in transport processes results in faster, more efficient and safer transport of goods from the sender/consignor, the manufacturer, to the receiver/consignee, consumer or customer. Container, i.e. containerization is one of the most important transportation technologies with significant impact on the development of international trade and globalization from the 1960s until present time. The aim of this paper is to review the role of containerization, as the most significant transportation technology. The results show an ever growing yet slower trend of containerization during past years that is likely to continue in the upcoming period . In the future, challenges can be expected in the container business especially in the field of digitalization and automation. This paper contributes to the valorization of containerization and points to the important role of infrastructure as a support to the realization of the potential of containerization in future.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126044849","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}
Design recommendations for the acceleration lane length are based on research and monitoring data made decades ago and have recently been the subject of discussions and innovations. Designing a highway acceleration lane differs between urban and non-urban areas by a large number of parameters. Specificities of an urban space, multimodal demands of traffic users, environmental requirements and inherited spatial relationships make optimization of the acceleration lane length a real challenge. The development of analytical, analytical-empirical and simulation methods for evaluating design solutions is generated by the desire to make the analyses performed in the planning phase as realistic as possible. Microsimulation traffic tools, such as VISSIM, enable the analysis of variant solutions and the optimization of road design elements for existing as well as for future traffic demands. This paper presents an analysis of two existing acceleration lanes on the southern bypass of the city of Osijek. Microsimulation results show that there is a potential for shortening the length of acceleration lanes in the current traffic demand conditions. Various scenarios of the increase in traffic of the main and secondary traffic flows have been analysed. The results were evaluated through the criteria of selected functional indicators, which are average delays and queue lengths. This research contributes to the methodology of applying modern simulation tools in the analysis and optimization of traffic infrastructure elements in local conditions.
{"title":"Optimization of the Urban Highway Acceleration Lane Length Using Traffic Simulations","authors":"Ivana Zrakić, I. I. Otkovic","doi":"10.18048/2019.57.10","DOIUrl":"https://doi.org/10.18048/2019.57.10","url":null,"abstract":"Design recommendations for the acceleration lane length are based on research and monitoring data made decades ago and have recently been the subject of discussions and innovations. Designing a highway acceleration lane differs between urban and non-urban areas by a large number of parameters. Specificities of an urban space, multimodal demands of traffic users, environmental requirements and inherited spatial relationships make optimization of the acceleration lane length a real challenge. The development of analytical, analytical-empirical and simulation methods for evaluating design solutions is generated by the desire to make the analyses performed in the planning phase as realistic as possible. Microsimulation traffic tools, such as VISSIM, enable the analysis of variant solutions and the optimization of road design elements for existing as well as for future traffic demands. This paper presents an analysis of two existing acceleration lanes on the southern bypass of the city of Osijek. Microsimulation results show that there is a potential for shortening the length of acceleration lanes in the current traffic demand conditions. Various scenarios of the increase in traffic of the main and secondary traffic flows have been analysed. The results were evaluated through the criteria of selected functional indicators, which are average delays and queue lengths. This research contributes to the methodology of applying modern simulation tools in the analysis and optimization of traffic infrastructure elements in local conditions.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115523061","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}
This paper presents an analysis of the gas turbine real process (with all losses included) before and after a major maintenance. The analysis of both gas turbine operating regimes is based on data measured during its exploitation. Contrary to authors’ expectations, the major maintenance process did not result either in any decrease in losses or increase in efficiencies for the majority of the gas turbine components. However, the major maintenance influenced positively the gas turbine combustion chambers (reduction in losses and increase in the combustion chambers efficiency). After the major maintenance, the overall process efficiency decreased from 43.796% to 41.319% due to a significant decrease in the air mass flow rate and to an increase in the fuel mass flow rate in combustion chambers. A decrease in the gas turbine produced cumulative and useful power after a major maintenance also increased the specific fuel consumption.
{"title":"Analysis of Gas Turbine Operation before and after Major Maintenance","authors":"V. Mrzljak, N. Anđelić, I. Lorencin, Z. Car","doi":"10.18048/2019.57.04","DOIUrl":"https://doi.org/10.18048/2019.57.04","url":null,"abstract":"This paper presents an analysis of the gas turbine real process (with all losses included) before and after a major maintenance. The analysis of both gas turbine operating regimes is based on data measured during its exploitation. Contrary to authors’ expectations, the major maintenance process did not result either in any decrease in losses or increase in efficiencies for the majority of the gas turbine components. However, the major maintenance influenced positively the gas turbine combustion chambers (reduction in losses and increase in the combustion chambers efficiency). After the major maintenance, the overall process efficiency decreased from 43.796% to 41.319% due to a significant decrease in the air mass flow rate and to an increase in the fuel mass flow rate in combustion chambers. A decrease in the gas turbine produced cumulative and useful power after a major maintenance also increased the specific fuel consumption.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124953961","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}
In this paper the main objective was to analyse water distribution market on Adriatic islands, mainly those without any water piping infrastructure. Those islands are mostly supplied by water carrying ships. The used methodology consisted of analysing, in last four years, the number of water deliveries and amount of precipitation in the research area. The analysis showed that the most critical situation occurs from June to September, when the number of residents grows and the amount of precipitation lowers. In order to avoid critical situations, like water reductions and draughts, important factors are pointed out which could lead to such situations and with proper precautions action can be avoided.
{"title":"Water Carrying Ships in the Adriatic Region - Zadar Region Analysis","authors":"L. Grbic, M. Baric, Karlo Cimera, Dragan Čurin","doi":"10.18048/2019.57.06","DOIUrl":"https://doi.org/10.18048/2019.57.06","url":null,"abstract":"In this paper the main objective was to analyse water distribution market on Adriatic islands, mainly those without any water piping infrastructure. Those islands are mostly supplied by water carrying ships. The used methodology consisted of analysing, in last four years, the number of water deliveries and amount of precipitation in the research area. The analysis showed that the most critical situation occurs from June to September, when the number of residents grows and the amount of precipitation lowers. In order to avoid critical situations, like water reductions and draughts, important factors are pointed out which could lead to such situations and with proper precautions action can be avoided.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130069188","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}
As maritime transport produces a large amount of data from various sources and in different formats, authors have analysed current applications of Big Data by researching global applications and experiences and by studying journal and conference articles. Big Data innovations in maritime transport (both cargo and passenger) are demonstrated, mainly in the fields of seaport operations, weather routing, monitoring/tracking and security. After the analysis, the authors have concluded that Big Data analyses can provide deep understanding of causalities and correlations in maritime transport, thus improving decision making. However, there exist major challenges of an efficient data collection and processing in maritime transport, such as technology challenges, challenges due to competitive conditions etc. Finally, the authors provide a future perspective of Big Data usage in maritime transport.
{"title":"Big Data Management in Maritime Transport","authors":"M. Jović, E. Tijan, Rebecca Marx, Berit Gebhard","doi":"10.18048/2019.57.09","DOIUrl":"https://doi.org/10.18048/2019.57.09","url":null,"abstract":"As maritime transport produces a large amount of data from various sources and in different formats, authors have analysed current applications of Big Data by researching global applications and experiences and by studying journal and conference articles. Big Data innovations in maritime transport (both cargo and passenger) are demonstrated, mainly in the fields of seaport operations, weather routing, monitoring/tracking and security. After the analysis, the authors have concluded that Big Data analyses can provide deep understanding of causalities and correlations in maritime transport, thus improving decision making. However, there exist major challenges of an efficient data collection and processing in maritime transport, such as technology challenges, challenges due to competitive conditions etc. Finally, the authors provide a future perspective of Big Data usage in maritime transport.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116987890","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}
Lino Kocijel, V. Mrzljak, Maida Cohodar Husic, A. Çekiç
This paper investigates the influence of the fuel injector nozzle geometry on the liquid fuel contraction coefficient and Reynolds number. The main three fuel injector nozzle geometry parameters: nozzle diameter (d), nozzle length (l) and nozzle inlet radius (r) have a strong influence on the liquid fuel contraction coefficient and Reynolds number. The variation of the nozzle geometry variables at different liquid fuel pressures, temperatures and injection rates was analyzed. The liquid fuel contraction coefficient and Reynolds number increase with an increase in the nozzle diameter, regardless of the fuel injection rate. An increase in the r/d ratio causes an increase in the fuel contraction coefficient, but the increase is not significant after r/d = 0.1. A nozzle length increase causes a decrease in the fuel contraction coefficient. Increase in the nozzle length of 0.5 mm causes an approximately similar decrease in the contraction coefficient at any fuel pressure and any nozzle length. Fuel injectors should operate with minimal possible nozzle lengths in order to obtain higher fuel contraction coefficients.
{"title":"Numerical Analysis of Fuel Injector Nozzle Geometry - Influence on Liquid Fuel Contraction Coefficient and Reynolds Number","authors":"Lino Kocijel, V. Mrzljak, Maida Cohodar Husic, A. Çekiç","doi":"10.18048/2019.57.02","DOIUrl":"https://doi.org/10.18048/2019.57.02","url":null,"abstract":"This paper investigates the influence of the fuel injector nozzle geometry on the liquid fuel contraction coefficient and Reynolds number. The main three fuel injector nozzle geometry parameters: nozzle diameter (d), nozzle length (l) and nozzle inlet radius (r) have a strong influence on the liquid fuel contraction coefficient and Reynolds number. The variation of the nozzle geometry variables at different liquid fuel pressures, temperatures and injection rates was analyzed. The liquid fuel contraction coefficient and Reynolds number increase with an increase in the nozzle diameter, regardless of the fuel injection rate. An increase in the r/d ratio causes an increase in the fuel contraction coefficient, but the increase is not significant after r/d = 0.1. A nozzle length increase causes a decrease in the fuel contraction coefficient. Increase in the nozzle length of 0.5 mm causes an approximately similar decrease in the contraction coefficient at any fuel pressure and any nozzle length. Fuel injectors should operate with minimal possible nozzle lengths in order to obtain higher fuel contraction coefficients.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129512600","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}
Nautical tourism is one of the major tourism sectors and the largest growing maritime industry in Europe, employing almost 3.2 million people. Nautical tourism is of great importance for Croatia and Croatia is increasingly promoted as one of the leading Mediterranean nautical destinations. Croatia’s insular and coastal nautical infrastructure offers its users adequate services, but services need to be continuously upgraded. At the same time, the development of the local community must not be subordinated to the development of a nautical destination. The authors analyze nautical tourism and small shipbuilding, two sectors that constitute the blue economy. The blue economy is analyzed with particular regard as a long-term strategy to support the sustainable growth of the marine and maritime sectors. The authors emphasize that the blue economy aims to stimulate sustainable economic development, create business opportunities and open jobs in the blue economy sectors of the EU countries. The importance of the blue economy for Croatia is analyzed and the results of the analysis presented.
{"title":"Nautical Tourism and Small Shipbuilding as Significant part of Blue Economy Development","authors":"A. Alempijevic, M. Kovačić","doi":"10.18048/2019.57.07.","DOIUrl":"https://doi.org/10.18048/2019.57.07.","url":null,"abstract":"Nautical tourism is one of the major tourism sectors and the largest growing maritime industry in Europe, employing almost 3.2 million people. Nautical tourism is of great importance for Croatia and Croatia is increasingly promoted as one of the leading Mediterranean nautical destinations. Croatia’s insular and coastal nautical infrastructure offers its users adequate services, but services need to be continuously upgraded. At the same time, the development of the local community must not be subordinated to the development of a nautical destination. The authors analyze nautical tourism and small shipbuilding, two sectors that constitute the blue economy. The blue economy is analyzed with particular regard as a long-term strategy to support the sustainable growth of the marine and maritime sectors. The authors emphasize that the blue economy aims to stimulate sustainable economic development, create business opportunities and open jobs in the blue economy sectors of the EU countries. The importance of the blue economy for Croatia is analyzed and the results of the analysis presented.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129191504","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}
Sandi Baressi Segota, I. Lorencin, Kazhiro Ohkura, Z. Car
The Traveling salesman problem (TSP) defines the problem of finding the optimal path between multiple points, connected by paths of a certain cost. This paper applies that problem formulation in the maritime environment, specifically a path planning problem for a tour boat visiting popular tourist locations in Medulin, Croatia. The problem is solved using two evolutionary computing methods – the genetic algorithm (GA) and the simulated annealing (SA) - and comparing the results (are compared) by an extensive search of the solution space. The results show that evolutionary computing algorithms provide comparable results to an extensive search in a shorter amount of time, with SA providing better results of the two.
{"title":"On the Traveling Salesman Problem in Nautical Environments: an Evolutionary Computing Approach to Optimization of Tourist Route Paths in Medulin, Croatia","authors":"Sandi Baressi Segota, I. Lorencin, Kazhiro Ohkura, Z. Car","doi":"10.18048/2019.57.05","DOIUrl":"https://doi.org/10.18048/2019.57.05","url":null,"abstract":"The Traveling salesman problem (TSP) defines the problem of finding the optimal path between multiple points, connected by paths of a certain cost. This paper applies that problem formulation in the maritime environment, specifically a path planning problem for a tour boat visiting popular tourist locations in Medulin, Croatia. The problem is solved using two evolutionary computing methods – the genetic algorithm (GA) and the simulated annealing (SA) - and comparing the results (are compared) by an extensive search of the solution space. The results show that evolutionary computing algorithms provide comparable results to an extensive search in a shorter amount of time, with SA providing better results of the two.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133381325","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}
Nautical Tourism represents one of the most important and significant elements of today´s Croatian tourism product. This specific form of tourism experienced significant qualitative changes over the years due to the changes in the preferences of today´s yachtsmen, who are still very interested in experiencing natural attractions of the destination they reside in and in spending active holidays. Besides, they are increasingly oriented towards maximum quality and luxury of the tourism offer more than ever and are willing to pay for it significantly. The most recent results indicate that today´s yachtsmen show a significantly high level of satisfaction with the Croatian nautical tourism offer. However, in order to be able to satisfy their growing needs, it is necessary to introduce additional improvements of the current tourism offer elements, as well as new elements, with the primary focus on satisfying the need for luxury. The main purpose of this paper is to present the current state of the Croatian Nautical Tourism and the importance of introducing elements of luxury in its offer, all with the goal to provide a greater level of satisfaction for yachtsmen and to position Croatia as a competitive nautical tourist destination within the world’s nautical tourism flows.
{"title":"Perspectives of Development of Luxury Nautical Tourism in the Republic of Croatia","authors":"Romina Alkier","doi":"10.18048/2019.56.07","DOIUrl":"https://doi.org/10.18048/2019.56.07","url":null,"abstract":"Nautical Tourism represents one of the most important and significant elements of today´s Croatian tourism product. This specific form of tourism experienced significant qualitative changes over the years due to the changes in the preferences of today´s yachtsmen, who are still very interested in experiencing natural attractions of the destination they reside in and in spending active holidays. Besides, they are increasingly oriented towards maximum quality and luxury of the tourism offer more than ever and are willing to pay for it significantly. The most recent results indicate that today´s yachtsmen show a significantly high level of satisfaction with the Croatian nautical tourism offer. However, in order to be able to satisfy their growing needs, it is necessary to introduce additional improvements of the current tourism offer elements, as well as new elements, with the primary focus on satisfying the need for luxury. The main purpose of this paper is to present the current state of the Croatian Nautical Tourism and the importance of introducing elements of luxury in its offer, all with the goal to provide a greater level of satisfaction for yachtsmen and to position Croatia as a competitive nautical tourist destination within the world’s nautical tourism flows.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124028632","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}
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