Pub Date : 1900-01-01DOI: 10.1109/CEEM.2003.238648
G. Guo, Qi Wang, Jin Wang, Jing Li, D. Ren, Lihua Zhen, Hai Lin, Yao Guo
Animals were exposed to EMP with field intensity 25, 50, 100, 200 and 400 kV/m, and 25, 50, 100 and 200 pulses; duration between every two pulses is 2s. Firstly, an Evans blue (EB) and fluorescent microscope were used to observe the changes in the permeability of BBB after exposed to different combinations of the parameters. Secondly, an electron microscope was used to investigate the effects of EMP on the ultrastructure of different areas in the hippocampus and the marginal division of the brain after injection of lanthanum nitrate. Results showed that the permeability of the BBB of the rat can be changed after exposure to EMP with a significant dose-effect relationship. With the increasing of field intensity and raising of pulse number, the number and the area of spots increased so too the intensity of fluorescent colorations. Morphological changes in BBB and nervous tissue after EMP exposure also showed dose-effect relationship. The lanthanum nitrate granules appeared in the tissue of the cortex, hippocampus and hypothalamus in the EMP exposed group. The process of the granules crossing through the tight junction of capillary vessels and the phagocytosis of the granules in the endothelium cells were presented. Exposure to EMP can lead to increased permeability of BBB and could damage the endothelium cells of the capillary, resulting in increases of the perivascular space of the capillary.
实验动物分别暴露于场强为25、50、100、200和400 kV/m以及25、50、100和200脉冲的电磁脉冲下;每两个脉冲之间的间隔时间为2s。首先采用Evans blue (EB)和荧光显微镜观察不同参数组合作用后血脑屏障通透性的变化。其次，通过电镜观察EMP对注射硝酸镧后大鼠海马不同区域超微结构及脑边缘分区的影响。结果表明，EMP可改变大鼠血脑屏障的通透性，且呈显著的剂量效应关系。随着电场强度的增加和脉冲数的增加，斑点的数量和面积也随之增加，荧光着色的强度也随之增加。EMP暴露后血脑屏障和神经组织的形态学变化也呈剂量效应关系。EMP暴露组大鼠皮层、海马和下丘脑组织中均可见硝酸镧颗粒。观察了颗粒穿过毛细血管紧密连接的过程和颗粒在内皮细胞内的吞噬作用。暴露于EMP可导致血脑屏障通透性增加，并可损伤毛细血管内皮细胞，导致毛细血管周围空间增大。
{"title":"Effects of electromagnetic pulses on the blood-brain barrier of rats","authors":"G. Guo, Qi Wang, Jin Wang, Jing Li, D. Ren, Lihua Zhen, Hai Lin, Yao Guo","doi":"10.1109/CEEM.2003.238648","DOIUrl":"https://doi.org/10.1109/CEEM.2003.238648","url":null,"abstract":"Animals were exposed to EMP with field intensity 25, 50, 100, 200 and 400 kV/m, and 25, 50, 100 and 200 pulses; duration between every two pulses is 2s. Firstly, an Evans blue (EB) and fluorescent microscope were used to observe the changes in the permeability of BBB after exposed to different combinations of the parameters. Secondly, an electron microscope was used to investigate the effects of EMP on the ultrastructure of different areas in the hippocampus and the marginal division of the brain after injection of lanthanum nitrate. Results showed that the permeability of the BBB of the rat can be changed after exposure to EMP with a significant dose-effect relationship. With the increasing of field intensity and raising of pulse number, the number and the area of spots increased so too the intensity of fluorescent colorations. Morphological changes in BBB and nervous tissue after EMP exposure also showed dose-effect relationship. The lanthanum nitrate granules appeared in the tissue of the cortex, hippocampus and hypothalamus in the EMP exposed group. The process of the granules crossing through the tight junction of capillary vessels and the phagocytosis of the granules in the endothelium cells were presented. Exposure to EMP can lead to increased permeability of BBB and could damage the endothelium cells of the capillary, resulting in increases of the perivascular space of the capillary.","PeriodicalId":129734,"journal":{"name":"Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings.","volume":"234 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132569172","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 : 1900-01-01DOI: 10.1109/CEEM.2003.238066
W. Thammasiriroj, S. Ruayariyasub, W. Khan-ngern, S. Nitta
The paper proposes a process to predict and analyze conducted electromagnetic interference (EMI) emission using the impedance mismatch approach. Five steps of this process are introduced and analyzed. The impedance mismatch criterion is proposed based on current and voltage waveforms in the time domain. The impedance mismatch fixtures and EMI measured results show how the impedance ratio and conducted EMI emission are related. The work was done using a class E zero-voltage switching (ZVS) resonant inverter at various load conditions - unity, lagging and leading power factors. The experimental results show good agreement with simulated results, which are accomplished by the MATLAB program.
{"title":"The effect of impedance mismatch on the conducted EMI emission","authors":"W. Thammasiriroj, S. Ruayariyasub, W. Khan-ngern, S. Nitta","doi":"10.1109/CEEM.2003.238066","DOIUrl":"https://doi.org/10.1109/CEEM.2003.238066","url":null,"abstract":"The paper proposes a process to predict and analyze conducted electromagnetic interference (EMI) emission using the impedance mismatch approach. Five steps of this process are introduced and analyzed. The impedance mismatch criterion is proposed based on current and voltage waveforms in the time domain. The impedance mismatch fixtures and EMI measured results show how the impedance ratio and conducted EMI emission are related. The work was done using a class E zero-voltage switching (ZVS) resonant inverter at various load conditions - unity, lagging and leading power factors. The experimental results show good agreement with simulated results, which are accomplished by the MATLAB program.","PeriodicalId":129734,"journal":{"name":"Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings.","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114781458","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 : 1900-01-01DOI: 10.1109/CEEM.2003.237919
Bi Zeng-jun, Liu Shanghe
In this paper, the electromagnetic field radiated by a thin wire parallel to the ground with ESD current injected is studied using the FDTD method and a numerical computation model is established. Characteristics of the radiation field and its variation rules with the distance of the wire away from the ground are analyzed.
{"title":"Numerical study of field radiated by a thin wire with ESD current injected","authors":"Bi Zeng-jun, Liu Shanghe","doi":"10.1109/CEEM.2003.237919","DOIUrl":"https://doi.org/10.1109/CEEM.2003.237919","url":null,"abstract":"In this paper, the electromagnetic field radiated by a thin wire parallel to the ground with ESD current injected is studied using the FDTD method and a numerical computation model is established. Characteristics of the radiation field and its variation rules with the distance of the wire away from the ground are analyzed.","PeriodicalId":129734,"journal":{"name":"Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings.","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116021545","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 : 1900-01-01DOI: 10.1109/CEEM.2003.238485
Xue Qianzhong, Zhangkunshu, Chen Zhiyu
This paper derives in detail the horizontal radiated electric fields from an electrically small radiator which should be well represented by the leading multipole moments, namely, the electric dipole and the magnetic moments, correcting Lee's corresponding formula. A sequence of GTEM cell measurements is made to determine the equivalent dipole moments of the device under test (DUT). Based on the correlation between GTEM cell and OATS emission measurements, theoretical simulation for DUT emissions over an open area test site (OATS) have been made. Theoretical results and experimental data measured directly over OATS are compared with good agreement.
{"title":"Test of correlation between GTEM cell and open area test site emission measurements","authors":"Xue Qianzhong, Zhangkunshu, Chen Zhiyu","doi":"10.1109/CEEM.2003.238485","DOIUrl":"https://doi.org/10.1109/CEEM.2003.238485","url":null,"abstract":"This paper derives in detail the horizontal radiated electric fields from an electrically small radiator which should be well represented by the leading multipole moments, namely, the electric dipole and the magnetic moments, correcting Lee's corresponding formula. A sequence of GTEM cell measurements is made to determine the equivalent dipole moments of the device under test (DUT). Based on the correlation between GTEM cell and OATS emission measurements, theoretical simulation for DUT emissions over an open area test site (OATS) have been made. Theoretical results and experimental data measured directly over OATS are compared with good agreement.","PeriodicalId":129734,"journal":{"name":"Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings.","volume":"60 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115698211","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 : 1900-01-01DOI: 10.1109/CEEM.2003.238346
Yan Yi, Su Donglin
We study the reflection, transmission, and absorption of microwaves in nonuniform plasma. A discussion of the effect of various plasma parameters (such as electron density, collision frequency, etc.) on the reflected power, transmitted power and absorbed power of the microwave is presented. The nonuniform plasma slab studied is modeled by a series of subslabs, in each of which the electron density is assumed to be constant. We assume that the number density is constant in each subslab, and then the overall electron density is subject to a parabolic distribution. The total reflected, absorbed, and transmitted powers could then be deduced according to the calculation of the partial reflection coefficient and transmission coefficient at each slab.
{"title":"The reflection, transmission, and absorption of microwave in nonuniform plasma","authors":"Yan Yi, Su Donglin","doi":"10.1109/CEEM.2003.238346","DOIUrl":"https://doi.org/10.1109/CEEM.2003.238346","url":null,"abstract":"We study the reflection, transmission, and absorption of microwaves in nonuniform plasma. A discussion of the effect of various plasma parameters (such as electron density, collision frequency, etc.) on the reflected power, transmitted power and absorbed power of the microwave is presented. The nonuniform plasma slab studied is modeled by a series of subslabs, in each of which the electron density is assumed to be constant. We assume that the number density is constant in each subslab, and then the overall electron density is subject to a parabolic distribution. The total reflected, absorbed, and transmitted powers could then be deduced according to the calculation of the partial reflection coefficient and transmission coefficient at each slab.","PeriodicalId":129734,"journal":{"name":"Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings.","volume":"318 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123405601","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 : 1900-01-01DOI: 10.1109/CEEM.2003.238484
Zhang Xiaoqing
This paper proposes an efficient method for calculating the equivalent attractive area of horizontal conductors. The border of the collection volume is defined in the directrix curve equation. Inside the collection volume the incident area of downward leader is found by using an improved geometrical algorithm, in which the probability distribution of the approach angle of the downward leader is taken into account. In terms of the probability density of lightning striking distance, an integral operation is performed for obtaining the equivalent attractive area. The calculated result is compared with those from the empirical formulae to check the validity of the proposed method.
{"title":"Calculation of the equivalent attractive area of horizontal conductors","authors":"Zhang Xiaoqing","doi":"10.1109/CEEM.2003.238484","DOIUrl":"https://doi.org/10.1109/CEEM.2003.238484","url":null,"abstract":"This paper proposes an efficient method for calculating the equivalent attractive area of horizontal conductors. The border of the collection volume is defined in the directrix curve equation. Inside the collection volume the incident area of downward leader is found by using an improved geometrical algorithm, in which the probability distribution of the approach angle of the downward leader is taken into account. In terms of the probability density of lightning striking distance, an integral operation is performed for obtaining the equivalent attractive area. The calculated result is compared with those from the empirical formulae to check the validity of the proposed method.","PeriodicalId":129734,"journal":{"name":"Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings.","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125297162","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 : 1900-01-01DOI: 10.1109/CEEM.2003.238291
Wenfeng Cai, Xueguan Liu, Huiping Guo, H. Yin, Peikang Huang
By approximating electrically large scale objects with polygons, a concise expression for the physical optics (PO) method on electromagnetic scattering by arbitrary shaped conducting targets with partial coating is proposed in this paper, which is based on the theory of equivalent currents on arbitrary radio absorbing material (RAM) surface with infinite metal substrate. The fact that there are only simple algebraic operations without integration in our formula makes the calculation highly efficient and provides a good high-speed estimation of the RCS of electrically large scale conducting bodies with partial coating.
{"title":"A concise expression for PO method on electromagnetic scattering by arbitrary shaped conducting targets with partially coating","authors":"Wenfeng Cai, Xueguan Liu, Huiping Guo, H. Yin, Peikang Huang","doi":"10.1109/CEEM.2003.238291","DOIUrl":"https://doi.org/10.1109/CEEM.2003.238291","url":null,"abstract":"By approximating electrically large scale objects with polygons, a concise expression for the physical optics (PO) method on electromagnetic scattering by arbitrary shaped conducting targets with partial coating is proposed in this paper, which is based on the theory of equivalent currents on arbitrary radio absorbing material (RAM) surface with infinite metal substrate. The fact that there are only simple algebraic operations without integration in our formula makes the calculation highly efficient and provides a good high-speed estimation of the RCS of electrically large scale conducting bodies with partial coating.","PeriodicalId":129734,"journal":{"name":"Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings.","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128519052","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 : 1900-01-01DOI: 10.1109/CEEM.2003.237922
Liu Yi-ping, Zhou Bi-hua
The attenuation characteristics of high-altitude nuclear blast electromagnetic pulse (HEMP) passing through the infinite metal board are obtained in this paper and the influence caused by aperture is analyzed synchronously. On the basis of these properties, the methods that can improve shielding efficiency (SE) are discussed by combining the application for the air-tight door then many experimental results are given.
{"title":"The analysis of attenuation characteristics for HEMP passing through the air-tight door","authors":"Liu Yi-ping, Zhou Bi-hua","doi":"10.1109/CEEM.2003.237922","DOIUrl":"https://doi.org/10.1109/CEEM.2003.237922","url":null,"abstract":"The attenuation characteristics of high-altitude nuclear blast electromagnetic pulse (HEMP) passing through the infinite metal board are obtained in this paper and the influence caused by aperture is analyzed synchronously. On the basis of these properties, the methods that can improve shielding efficiency (SE) are discussed by combining the application for the air-tight door then many experimental results are given.","PeriodicalId":129734,"journal":{"name":"Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings.","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128454909","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 : 1900-01-01DOI: 10.1109/CEEM.2003.237925
N. A. Kazakova, P. Nagorskiy, E.I. Semerikova, B.B. Tsibikov
In this work observations are discussed in the response of the gravitation signal of the sounding inclined Doppler of the low acoustic (LFA) and internal gravitation (IGW) of waves in upper atmosphere, formed from pulsed sources: the process of earthquake preparing; the start of the rocket. In both events sources have broadband (/spl delta/-figurative) spectrum. The difference is concluded that in the process of preparing the earthquake source is found on land surfaces, and at the stairwell of a rocket in the upper atmosphere. The analysis given allows us to value the passband of the upper sound channel, and the band in which possible registration of the wave indignations are conditioned by earthquakes.
{"title":"Wave perturbations in upper atmosphere from pulsed sources","authors":"N. A. Kazakova, P. Nagorskiy, E.I. Semerikova, B.B. Tsibikov","doi":"10.1109/CEEM.2003.237925","DOIUrl":"https://doi.org/10.1109/CEEM.2003.237925","url":null,"abstract":"In this work observations are discussed in the response of the gravitation signal of the sounding inclined Doppler of the low acoustic (LFA) and internal gravitation (IGW) of waves in upper atmosphere, formed from pulsed sources: the process of earthquake preparing; the start of the rocket. In both events sources have broadband (/spl delta/-figurative) spectrum. The difference is concluded that in the process of preparing the earthquake source is found on land surfaces, and at the stairwell of a rocket in the upper atmosphere. The analysis given allows us to value the passband of the upper sound channel, and the band in which possible registration of the wave indignations are conditioned by earthquakes.","PeriodicalId":129734,"journal":{"name":"Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings.","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129444366","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 : 1900-01-01DOI: 10.1109/CEEM.2003.237878
K. Gotoh, K. Hattori, M. Hayakawa
The purpose of this report is to find out any ULF signature for the earthquakes in Izu islands in July 2000 (associated with volcanic activity) by means of a new signal processing method. The ULF data observed at three closely spaced stations in Izu peninsula, are subjected to the principal component analysis (PCA), and we have found that this PCA is very effective in distinguishing among different sources of ULF emissions (geomagnetic variation, man-made noise, and seismogenic emission). While, the first and second principal components are found to be associated with geomagnetic variation and man-made activity, respectively, the third principal component (residual noise like seismogenic emission if it exists) at night has indicated a significant temporal evolution; an enhancement for about 1.5 months (from early May to middle June) and a conspicuous minimum about ten days before the first earthquake on July 1 (magnitude 6.4), followed by a sharp increase a few days before the earthquakes. Furthermore, this component is found to be back to the background level a few months later than the earthquakes. This temporal pattern is in good agreement with those for previous large earthquake (Spitak, Loma Prieta, Guam and Biak earthquakes), so that this temporal evolution for the third principal component found by PCA is likely to be a precursory ULF signature of those Izu islands' earthquakes with its intensity of the order of 5% of the first principal component.
{"title":"Identification of ULF emissions for Izu islands earthquakes in July 2000","authors":"K. Gotoh, K. Hattori, M. Hayakawa","doi":"10.1109/CEEM.2003.237878","DOIUrl":"https://doi.org/10.1109/CEEM.2003.237878","url":null,"abstract":"The purpose of this report is to find out any ULF signature for the earthquakes in Izu islands in July 2000 (associated with volcanic activity) by means of a new signal processing method. The ULF data observed at three closely spaced stations in Izu peninsula, are subjected to the principal component analysis (PCA), and we have found that this PCA is very effective in distinguishing among different sources of ULF emissions (geomagnetic variation, man-made noise, and seismogenic emission). While, the first and second principal components are found to be associated with geomagnetic variation and man-made activity, respectively, the third principal component (residual noise like seismogenic emission if it exists) at night has indicated a significant temporal evolution; an enhancement for about 1.5 months (from early May to middle June) and a conspicuous minimum about ten days before the first earthquake on July 1 (magnitude 6.4), followed by a sharp increase a few days before the earthquakes. Furthermore, this component is found to be back to the background level a few months later than the earthquakes. This temporal pattern is in good agreement with those for previous large earthquake (Spitak, Loma Prieta, Guam and Biak earthquakes), so that this temporal evolution for the third principal component found by PCA is likely to be a precursory ULF signature of those Izu islands' earthquakes with its intensity of the order of 5% of the first principal component.","PeriodicalId":129734,"journal":{"name":"Asia-Pacific Conference on Environmental Electromagnetics, 2003. CEEM 2003. Proceedings.","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130550097","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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