Pub Date : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10036950
M. Rezinkina, O. Rezinkin
Numerical modelling of the electromagnetic field in field-forming system of different configuration and different parameters have been performed. Such a modelling was aimed on reduction of the of the degree of non-homogeneity of the magnetic induction.
对不同构型、不同参数的场成形系统进行了电磁场数值模拟。这样的建模是为了减少磁感应的非均匀性的程度。
{"title":"Numerical Modelling of the Field Forming Systems for Reducing the Nonuniformity of the Magnetic Field","authors":"M. Rezinkina, O. Rezinkin","doi":"10.1109/UkrMW58013.2022.10036950","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10036950","url":null,"abstract":"Numerical modelling of the electromagnetic field in field-forming system of different configuration and different parameters have been performed. Such a modelling was aimed on reduction of the of the degree of non-homogeneity of the magnetic induction.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126779952","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}
Pub Date : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037038
E. Khutoryan, S. Vlasenko, A. Kuleshov, S. Ponomarenko, K. Lukin, Y. Tatematsu, M. Tani
The operation of the THz Cherenkov vacuum electron devices with nonuniform double gratings supporting the hybrid bulk-surface modes has been considered for an increase of a thickness of a sheet electron beam and its coupling with RF field. It is shown that advantages of a double grating configuration may comprise the increase of up to 3 times of a coupling impedance as well as a widening of the operation frequency range in comparison with the single grating configuration.
{"title":"Hybrid Bulk-Surface Modes Excited in the THz Cherenkov Oscillator with the Double Grating","authors":"E. Khutoryan, S. Vlasenko, A. Kuleshov, S. Ponomarenko, K. Lukin, Y. Tatematsu, M. Tani","doi":"10.1109/UkrMW58013.2022.10037038","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037038","url":null,"abstract":"The operation of the THz Cherenkov vacuum electron devices with nonuniform double gratings supporting the hybrid bulk-surface modes has been considered for an increase of a thickness of a sheet electron beam and its coupling with RF field. It is shown that advantages of a double grating configuration may comprise the increase of up to 3 times of a coupling impedance as well as a widening of the operation frequency range in comparison with the single grating configuration.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126787658","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}
Pub Date : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10036997
Ganna B. Veselovska-Maiboroda, S. A. Velichko, A. Nosich
We revisit the history of development and operation of the first-ever orbital X-band real aperture side-looking radar (RA-SLR) onboard the USSR satellite “Cosmos-1500.” This radar was conceived, designed and tested in the early 1980s, and then supervised in orbit, by the team of Ukrainian scientists and engineers led by Professor Anatoly Kalmykov at the O. Y. Usikov Institute of Radiophysics and Electronics of the National Academy of Sciences of Ukraine (IRE NASU). It had 100-kW magnetron source, 12-m deployable slotted-waveguide antenna and onboard signal processing unit. Instead of planned experiments, only five days after placement into the polar Earth orbit in the autumn of 1983, SLR of “Cosmos-1500” rendered truly outstanding service. It provided a stream of microwave images of the polar sea ice conditions that enabled the rescue of the freighters in the Arctic Ocean. However, the way to success was far from smooth. Besides of the technical problems, A. Kalmykov had to overcome the jealousy and hostility of both his home institute administration and the USSR bureaucracy. Later, SLR of “Cosmos-1500” was released to the industry and became the main instrument of the USSR and Russian series of remote sensing satellites “Okean” and Ukrainian satellites “Sich-1” and “Sich-1M.” We believe that SLR of “Cosmos-1500” is a perfect candidate to the status of IEEE Milestone in Ukraine.
我们回顾了苏联卫星“宇宙-1500”上第一台轨道x波段真实孔径侧视雷达(RA-SLR)的发展和运行历史。该雷达在1980年代早期构思、设计和测试，然后由乌克兰国家科学院(IRE NASU) O. Y. Usikov放射物理和电子学研究所的Anatoly Kalmykov教授领导的乌克兰科学家和工程师团队在轨道上监督。它有100千瓦的磁控管源，12米可展开的开槽波导天线和机载信号处理单元。1983年秋天，“宇宙-1500”号单反卫星在进入极地地球轨道仅5天后，就完成了真正出色的服务，而不是计划中的实验。它提供了极地海冰状况的一系列微波图像，使救援在北冰洋的货船成为可能。然而，通往成功的道路并不平坦。除了技术问题，A.卡尔梅科夫还必须克服他所在的研究所管理层和苏联官僚机构的嫉妒和敌意。后来，“宇宙-1500”单反向工业界发布，并成为苏联和俄罗斯“奥肯”系列遥感卫星以及乌克兰“静默-1”和“静默- 1m”卫星的主要仪器。我们相信“Cosmos-1500”的单反相机是乌克兰IEEE Milestone地位的完美候选人。
{"title":"Orbital X-band Side-Looking Radar of Cosmos-1500: Potential IEEE Milestone Candidate: Invited Paper","authors":"Ganna B. Veselovska-Maiboroda, S. A. Velichko, A. Nosich","doi":"10.1109/UkrMW58013.2022.10036997","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10036997","url":null,"abstract":"We revisit the history of development and operation of the first-ever orbital X-band real aperture side-looking radar (RA-SLR) onboard the USSR satellite “Cosmos-1500.” This radar was conceived, designed and tested in the early 1980s, and then supervised in orbit, by the team of Ukrainian scientists and engineers led by Professor Anatoly Kalmykov at the O. Y. Usikov Institute of Radiophysics and Electronics of the National Academy of Sciences of Ukraine (IRE NASU). It had 100-kW magnetron source, 12-m deployable slotted-waveguide antenna and onboard signal processing unit. Instead of planned experiments, only five days after placement into the polar Earth orbit in the autumn of 1983, SLR of “Cosmos-1500” rendered truly outstanding service. It provided a stream of microwave images of the polar sea ice conditions that enabled the rescue of the freighters in the Arctic Ocean. However, the way to success was far from smooth. Besides of the technical problems, A. Kalmykov had to overcome the jealousy and hostility of both his home institute administration and the USSR bureaucracy. Later, SLR of “Cosmos-1500” was released to the industry and became the main instrument of the USSR and Russian series of remote sensing satellites “Okean” and Ukrainian satellites “Sich-1” and “Sich-1M.” We believe that SLR of “Cosmos-1500” is a perfect candidate to the status of IEEE Milestone in Ukraine.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123188783","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}
Pub Date : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037006
G. Galati, G. Pavan
In spite of the centennial age of radar, this technology is facing continuous progress. This overview paper considers two significant items in this field, namely Noise Radar Technology (NRT) and Quantum Radar (QR). Status, ongoing research and future perspectives are briefly discussed, not forgetting some critical and controversial elements.
{"title":"Noise Radar Technology and Quantum Radar: Yesterday, Today and Tomorrow","authors":"G. Galati, G. Pavan","doi":"10.1109/UkrMW58013.2022.10037006","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037006","url":null,"abstract":"In spite of the centennial age of radar, this technology is facing continuous progress. This overview paper considers two significant items in this field, namely Noise Radar Technology (NRT) and Quantum Radar (QR). Status, ongoing research and future perspectives are briefly discussed, not forgetting some critical and controversial elements.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"06 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130494667","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}
Pub Date : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037040
M. Popov, I. Zavislyak, H. Chumak
This report presents the results of dual-tunable band-pass filter characteristics measurement. The filter operation is based on the straight-edge ferrite resonator (made from Y-type hexaferrite) symmetrically coupled to the input and output microstrip transmission lines. The filter demonstrated magnetic tunability within 8–12 GHz frequency range by the in-plane bias magnetic field and electric control of the passband center frequency due to current-induced nonlinear magnetoelectric effect. The electric tuning of the center frequency up to $-(115pm 90)$ MHz was obtained for the 200 mW of DC electric power applied to the ferrite resonator.
{"title":"Design of the Ferrite Band-pass Filter with Dual Tunability","authors":"M. Popov, I. Zavislyak, H. Chumak","doi":"10.1109/UkrMW58013.2022.10037040","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037040","url":null,"abstract":"This report presents the results of dual-tunable band-pass filter characteristics measurement. The filter operation is based on the straight-edge ferrite resonator (made from Y-type hexaferrite) symmetrically coupled to the input and output microstrip transmission lines. The filter demonstrated magnetic tunability within 8–12 GHz frequency range by the in-plane bias magnetic field and electric control of the passband center frequency due to current-induced nonlinear magnetoelectric effect. The electric tuning of the center frequency up to $-(115pm 90)$ MHz was obtained for the 200 mW of DC electric power applied to the ferrite resonator.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121140655","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}
Pub Date : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10036949
V. Abramova, V. Lukin, S. Abramov, K. Abramov, E. Bataeva
Image lossy compression is currently widely employed in different fields. Compared to lossless compression, it allows providing a considerably larger compression ratio but distortions are introduced inevitably. Properties of these distortions depend on a used coder, an image subject to compression, and compression parameters. Distortions affect visual perception of compressed images and efficiency of their further processing. Thus, statistical and spatial spectral properties of introduced distortions have to be understood well to explain effects observed in compressed image processing and, possibly, enabling their simulation. In this paper, we describe the tools that can be used in analysis of distortion properties and give an example of such analysis for grayscale images compressed by AGU coder. It is shown that distortions, in general, have spatially variant statistics where they are more intensive in locally active areas. Besides, distortions are spatially uncorrelated for all considered quantization steps and, respectively, compression ratios. Experiments are carried out using four typical remote sensing images.
{"title":"Analysis of Statistical and Spatial Spectral Characteristics of Distortions in Lossy Image Compression","authors":"V. Abramova, V. Lukin, S. Abramov, K. Abramov, E. Bataeva","doi":"10.1109/UkrMW58013.2022.10036949","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10036949","url":null,"abstract":"Image lossy compression is currently widely employed in different fields. Compared to lossless compression, it allows providing a considerably larger compression ratio but distortions are introduced inevitably. Properties of these distortions depend on a used coder, an image subject to compression, and compression parameters. Distortions affect visual perception of compressed images and efficiency of their further processing. Thus, statistical and spatial spectral properties of introduced distortions have to be understood well to explain effects observed in compressed image processing and, possibly, enabling their simulation. In this paper, we describe the tools that can be used in analysis of distortion properties and give an example of such analysis for grayscale images compressed by AGU coder. It is shown that distortions, in general, have spatially variant statistics where they are more intensive in locally active areas. Besides, distortions are spatially uncorrelated for all considered quantization steps and, respectively, compression ratios. Experiments are carried out using four typical remote sensing images.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123106787","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}
Pub Date : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037069
M. Legenkiy
In order to create new inconspicuous vehicles for contemporary radar detection systems or to cloak the existing ones some effective instruments for defining the object Radar Cross Section (RCS) are needed. The criterion of truth in this case always is experimental measurements, but in many cases it is difficult or sometimes impossible to provide it. So, one need reliable and efficient calculation methods in order to estimate radar detectability of a model of the complex shape object for typical radar wavelengths. The existing calculation methods assume the scattering field obtaining for each small parts (each facets) of the investigated model surface. For radar range such facets should be quite small and the it's the number can be very significant, so the scattered field calculation for all such facets can take a lot of time. On the other hand the real radar measurements frequently provides with low accuracy, so the high accuracy in calculations is not needed. It this paper we are going to obtain the approximation formulae for quick estimation of RCS for a complex shape object.
{"title":"Scattering from Elements of Bodies with Complex Shaped Surfaces","authors":"M. Legenkiy","doi":"10.1109/UkrMW58013.2022.10037069","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037069","url":null,"abstract":"In order to create new inconspicuous vehicles for contemporary radar detection systems or to cloak the existing ones some effective instruments for defining the object Radar Cross Section (RCS) are needed. The criterion of truth in this case always is experimental measurements, but in many cases it is difficult or sometimes impossible to provide it. So, one need reliable and efficient calculation methods in order to estimate radar detectability of a model of the complex shape object for typical radar wavelengths. The existing calculation methods assume the scattering field obtaining for each small parts (each facets) of the investigated model surface. For radar range such facets should be quite small and the it's the number can be very significant, so the scattered field calculation for all such facets can take a lot of time. On the other hand the real radar measurements frequently provides with low accuracy, so the high accuracy in calculations is not needed. It this paper we are going to obtain the approximation formulae for quick estimation of RCS for a complex shape object.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"58 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130650990","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}
Pub Date : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037135
V. Khrychov, M. Legenkiy
in this paper an analysis of the current state of the problem of modeling electromagnetic scattering on objects that can be located on the underlying surface and have masking covering is considered. The main steps of modeling and data processing for the electromagnetic scattering by the complex shape objects are considered. Main problems and their possible solutions are discussed. Material of this paper generalizes the results of the PhD thesis of the author.
{"title":"Modeling and Data Processing of the Electromagnetic Wave Scattering by Complex Shape Objects","authors":"V. Khrychov, M. Legenkiy","doi":"10.1109/UkrMW58013.2022.10037135","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037135","url":null,"abstract":"in this paper an analysis of the current state of the problem of modeling electromagnetic scattering on objects that can be located on the underlying surface and have masking covering is considered. The main steps of modeling and data processing for the electromagnetic scattering by the complex shape objects are considered. Main problems and their possible solutions are discussed. Material of this paper generalizes the results of the PhD thesis of the author.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133087776","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}
Pub Date : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037102
V. Tabatadze, K. Karaçuha, R. Zaridze
The present study investigates electromagnetic diffraction by a pulse from 2-D dielectric objects. A narrow Gaussian beam in the time domain is employed as the incident electromagnetic waves with a large period. The reflected field from the scatterer differs from the object's dimension, orientation, and relative permittivity. Therefore, the object's location, orientation, and electrical and physical properties can be deduced from the difference in the reflected field characteristics in the time domain. The Method of Auxiliary Sources (MAS) is employed to obtain the results.
{"title":"Electromagnetic Diffraction by a Pulse from 2-D Dielectric Objects","authors":"V. Tabatadze, K. Karaçuha, R. Zaridze","doi":"10.1109/UkrMW58013.2022.10037102","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037102","url":null,"abstract":"The present study investigates electromagnetic diffraction by a pulse from 2-D dielectric objects. A narrow Gaussian beam in the time domain is employed as the incident electromagnetic waves with a large period. The reflected field from the scatterer differs from the object's dimension, orientation, and relative permittivity. Therefore, the object's location, orientation, and electrical and physical properties can be deduced from the difference in the reflected field characteristics in the time domain. The Method of Auxiliary Sources (MAS) is employed to obtain the results.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132150885","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}
Pub Date : 2022-11-14DOI: 10.1109/UkrMW58013.2022.10037015
M. A. Zabolotnyy, Y. Barabash, L. Aslamova
Spectra of capillary waves of distilled water and NADH solution in distilled water and their dynamics under the influence of electromagnetic radiation in the gigahertz range were studied. An analysis of the relationship between the temporal and spatial frequency of capillary waves on the surface of a low-viscosity liquid was carried out, which made it possible to use the non-destructive method of optical heterodyning to determine the rheological characteristics of the near-surface layers of the samples. Irradiation of distilled water with electromagnetic radiation (specific power 10−4 W/cm2, frequency 60 GHz, exposure time 1 - 20 min.) leads to an increase in the viscosity and surface tension of the NADH solution in the distillate leads to a decrease in its viscosity and surface tension, which indicates changes in conformations of NADH molecules.
{"title":"Dynamics of Conformational States of NADH Molecules in the Inner Surface Layers of Distilled Water and the Action of Gigahertz Electromagnetic Waves","authors":"M. A. Zabolotnyy, Y. Barabash, L. Aslamova","doi":"10.1109/UkrMW58013.2022.10037015","DOIUrl":"https://doi.org/10.1109/UkrMW58013.2022.10037015","url":null,"abstract":"Spectra of capillary waves of distilled water and NADH solution in distilled water and their dynamics under the influence of electromagnetic radiation in the gigahertz range were studied. An analysis of the relationship between the temporal and spatial frequency of capillary waves on the surface of a low-viscosity liquid was carried out, which made it possible to use the non-destructive method of optical heterodyning to determine the rheological characteristics of the near-surface layers of the samples. Irradiation of distilled water with electromagnetic radiation (specific power 10−4 W/cm2, frequency 60 GHz, exposure time 1 - 20 min.) leads to an increase in the viscosity and surface tension of the NADH solution in the distillate leads to a decrease in its viscosity and surface tension, which indicates changes in conformations of NADH molecules.","PeriodicalId":297673,"journal":{"name":"2022 IEEE 2nd Ukrainian Microwave Week (UkrMW)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134220605","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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