Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756207
C. Gong, Kai-Wen Yao, Chih-Hung Wang, K. Wang, M. Shiue, Chih-Cheng Chris Lu, Yi-Feng Luo
This paper presents study for rapid prototyping of a low-frequency implantable transceiver system. The idea stems from behavior modeling, followed by circuit design phase, for electronic implant requiring wireless transmission.
{"title":"An inductive biomedical communication processing chain","authors":"C. Gong, Kai-Wen Yao, Chih-Hung Wang, K. Wang, M. Shiue, Chih-Cheng Chris Lu, Yi-Feng Luo","doi":"10.1109/IMWS-BIO.2013.6756207","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756207","url":null,"abstract":"This paper presents study for rapid prototyping of a low-frequency implantable transceiver system. The idea stems from behavior modeling, followed by circuit design phase, for electronic implant requiring wireless transmission.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"22 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88317953","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756173
M. Kozlov, R. Turner
We numerically investigated several magnetic resonance imaging radiofrequency transmit coil arrays, with and without a local shield, and with a range of scanner bore configurations. The latter had a significant influence on safety excitation efficiency. It is therefore important to include the scanner magnet room in the simulation domain, when the scanner bore is not isolated from the rest of the scan room by an electric shield or RF absorber. All arrays investigated provided similar inhomogeneity over the entire brain for a given excitation condition. However, for CP excitation mode transmit excitation efficiency was found to be higher for an array without a local shield.
{"title":"Optimization of geometry for a dual-row MRI array at 400 MHz","authors":"M. Kozlov, R. Turner","doi":"10.1109/IMWS-BIO.2013.6756173","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756173","url":null,"abstract":"We numerically investigated several magnetic resonance imaging radiofrequency transmit coil arrays, with and without a local shield, and with a range of scanner bore configurations. The latter had a significant influence on safety excitation efficiency. It is therefore important to include the scanner magnet room in the simulation domain, when the scanner bore is not isolated from the rest of the scan room by an electric shield or RF absorber. All arrays investigated provided similar inhomogeneity over the entire brain for a given excitation condition. However, for CP excitation mode transmit excitation efficiency was found to be higher for an array without a local shield.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"66 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89688907","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756164
Shuo Liu, Shishan Qi, Wen Wu, D. Fang
A dual-band dual-polarized patch antenna is proposed for WiMax and WLAN systems. Impedance bandwidths of 7.5% and 9.6% can be achieved at 3.6 GHz and 5.2 GHz, respectively. The asymmetrical U-slot has been used to generate the orthogonal modes for circular polarization at 3.6 GHz with a 3dB axial ratio bandwidth of 0.7%, and the linear polarization is obtained by cutting a symmetrical U-slot on the patch. Higher gains at both CP and LP bands are obtained simultaneously. The peak gains in lower and higher bands are 8.5 dBic and 8.6 dBi, respectively. The simulated results of the antenna have been presented and discussed.
{"title":"Single-fed dual-band dual-polarized U-slot patch antenna","authors":"Shuo Liu, Shishan Qi, Wen Wu, D. Fang","doi":"10.1109/IMWS-BIO.2013.6756164","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756164","url":null,"abstract":"A dual-band dual-polarized patch antenna is proposed for WiMax and WLAN systems. Impedance bandwidths of 7.5% and 9.6% can be achieved at 3.6 GHz and 5.2 GHz, respectively. The asymmetrical U-slot has been used to generate the orthogonal modes for circular polarization at 3.6 GHz with a 3dB axial ratio bandwidth of 0.7%, and the linear polarization is obtained by cutting a symmetrical U-slot on the patch. Higher gains at both CP and LP bands are obtained simultaneously. The peak gains in lower and higher bands are 8.5 dBic and 8.6 dBi, respectively. The simulated results of the antenna have been presented and discussed.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"70 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78220775","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756196
T. Bjorninen, E. Moradi, L. Sydanheimo, J. Carmena, J. Rabaey, L. Ukkonen
We analyze the power and voltage transfer in a wireless link from an on-body transmit antenna to 1×1×1 mm3 antenna in a cortical implant to provide power and data telemetry for a battery-free brain-machine interface microelectronic system. We compare the wireless link performance with regular, segmented, and tilted transmit loop antennas. Moreover, we analyze the performance improvement achieved by inserting a magneto-dielectric core in the implant antenna. We also attest the simulation model through measurements in a liquid head phantom.
{"title":"Electromagnetic modelling and measurement of antennas for wireless brain-machine interface systems","authors":"T. Bjorninen, E. Moradi, L. Sydanheimo, J. Carmena, J. Rabaey, L. Ukkonen","doi":"10.1109/IMWS-BIO.2013.6756196","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756196","url":null,"abstract":"We analyze the power and voltage transfer in a wireless link from an on-body transmit antenna to 1×1×1 mm3 antenna in a cortical implant to provide power and data telemetry for a battery-free brain-machine interface microelectronic system. We compare the wireless link performance with regular, segmented, and tilted transmit loop antennas. Moreover, we analyze the performance improvement achieved by inserting a magneto-dielectric core in the implant antenna. We also attest the simulation model through measurements in a liquid head phantom.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"144 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85672101","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756231
M. Persson, A. Fhager, H. Trefná, P. Takook, Yinan Yu, T. McKelvey, J. Karlsson, X. Zeng, H. Zirath, M. Elam
Globally, around 15 million people each year suffer a stroke. Only a small fraction of stroke patients who could benefit from thrombolytic treatment reach diagnosis and treatment in time. To increase this low figure we have developed microwave technology aiming to differentiate hemorrhagic from ischemic stroke patients. The standard method for breast cancer diagnosis today is X-ray mammography. Despite its recognized ability to detect tumors it suffers from some limitations. Neither the false positive nor the false negative detection rates are negligible. An interesting alternative being researched extensively today is microwave tomography. In our current strive to develop a clinical prototype we have found that the most suitable design consists of an antenna array placed in a full 3D pattern. During the last decade clinical studies have demonstrated the ability of microwave hyperthermia to dramatically enhance cancer patient survival. The fundamental challenge is to adequately heat deep-seated tumors while preventing surrounding healthy tissue from undesired heating and damage. We are specifically addressing the challenge to deliver power levels with spatial control, patient treatment planning, and noninvasive temperature measurements.
{"title":"Microwave based diagnostics and treatment in practice","authors":"M. Persson, A. Fhager, H. Trefná, P. Takook, Yinan Yu, T. McKelvey, J. Karlsson, X. Zeng, H. Zirath, M. Elam","doi":"10.1109/IMWS-BIO.2013.6756231","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756231","url":null,"abstract":"Globally, around 15 million people each year suffer a stroke. Only a small fraction of stroke patients who could benefit from thrombolytic treatment reach diagnosis and treatment in time. To increase this low figure we have developed microwave technology aiming to differentiate hemorrhagic from ischemic stroke patients. The standard method for breast cancer diagnosis today is X-ray mammography. Despite its recognized ability to detect tumors it suffers from some limitations. Neither the false positive nor the false negative detection rates are negligible. An interesting alternative being researched extensively today is microwave tomography. In our current strive to develop a clinical prototype we have found that the most suitable design consists of an antenna array placed in a full 3D pattern. During the last decade clinical studies have demonstrated the ability of microwave hyperthermia to dramatically enhance cancer patient survival. The fundamental challenge is to adequately heat deep-seated tumors while preventing surrounding healthy tissue from undesired heating and damage. We are specifically addressing the challenge to deliver power levels with spatial control, patient treatment planning, and noninvasive temperature measurements.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"5 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86820964","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756238
Peng Li, Lei Yao, M. Je
This paper describes the digital system for neural recording and stimulation, which is designed for bionic neural link (BNL). The digital design for neural recording converts the multi-channel neural spikes as one trigger command and sends out via wireless channel. The digital stimulation design generates the adaptive arbitrary waveform to stimulate the muscle when a trigger signal comes. The digital system is designed in a 0.18 μm CMOS process and the power of the digital system for neural recording and stimulation chip is 80 μW and 130 μW with supplying by 1.8V voltage, respectively.
{"title":"Digital system design for wireless bionic neural link","authors":"Peng Li, Lei Yao, M. Je","doi":"10.1109/IMWS-BIO.2013.6756238","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756238","url":null,"abstract":"This paper describes the digital system for neural recording and stimulation, which is designed for bionic neural link (BNL). The digital design for neural recording converts the multi-channel neural spikes as one trigger command and sends out via wireless channel. The digital stimulation design generates the adaptive arbitrary waveform to stimulate the muscle when a trigger signal comes. The digital system is designed in a 0.18 μm CMOS process and the power of the digital system for neural recording and stimulation chip is 80 μW and 130 μW with supplying by 1.8V voltage, respectively.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"24 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78936864","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756172
Arthorn Sanpamch, Kusol Petsarb, W. Sroykham, W. Angkhananuwat, C. Phairoh, C. Apaiwong, S. Thanangkul, Y. Kajornpredanon, Pattarapong Phasukki
Bone drilling is an important medical maneuver in a general orthopedic surgery. Hole drilling by using a conventional mechanical rotary drill is avoidable for a tiny bone chip and a corrosion of drill bit. An application of microwave energy to drill a hard cortical bone is even though proposed by some researchers but an investigation of thermal interaction at a drill site is still remain promising especially in a term of simulation. This research investigates a microwave thermal ablation for bone drilling through a 3D FEM solver. Microwave drill applicator was designed as an opened-tip coaxial antenna which inserted into a center of cortical bone model. Temperature pattern at hot spot and estimate drilled hole size was predicted finally. These useful simulation results can be basically applied in a design and development of a practical microwave bone drilling system in a near future.
{"title":"An investigation of microwave ablation for bone thermal drilling","authors":"Arthorn Sanpamch, Kusol Petsarb, W. Sroykham, W. Angkhananuwat, C. Phairoh, C. Apaiwong, S. Thanangkul, Y. Kajornpredanon, Pattarapong Phasukki","doi":"10.1109/IMWS-BIO.2013.6756172","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756172","url":null,"abstract":"Bone drilling is an important medical maneuver in a general orthopedic surgery. Hole drilling by using a conventional mechanical rotary drill is avoidable for a tiny bone chip and a corrosion of drill bit. An application of microwave energy to drill a hard cortical bone is even though proposed by some researchers but an investigation of thermal interaction at a drill site is still remain promising especially in a term of simulation. This research investigates a microwave thermal ablation for bone drilling through a 3D FEM solver. Microwave drill applicator was designed as an opened-tip coaxial antenna which inserted into a center of cortical bone model. Temperature pattern at hot spot and estimate drilled hole size was predicted finally. These useful simulation results can be basically applied in a design and development of a practical microwave bone drilling system in a near future.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"68 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72882028","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756153
K. Thotahewa, Jean-Michel Redouté, M. Yuce
Ultra Wide Band (UWB) can be considered as a lucrative wireless technology for Wireless Body Area Network (WBAN) applications that demand for power stringent operation, high data rate and low form factor. The main drawback of the UWB technology is its receiver complexity. In order to overcome this barrier, this paper presents an implementation of a WBAN sensor node that uses UWB for data transmission and narrow band for data reception. This unique technique provides a means of achieving low power consuming sensor nodes with high data rate capability. The compact sensor platforms are implemented using off-the-shelf components; hence presents an economically viable solution for both commercial and research purposes.
{"title":"Implementation of a dual band body sensor node","authors":"K. Thotahewa, Jean-Michel Redouté, M. Yuce","doi":"10.1109/IMWS-BIO.2013.6756153","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756153","url":null,"abstract":"Ultra Wide Band (UWB) can be considered as a lucrative wireless technology for Wireless Body Area Network (WBAN) applications that demand for power stringent operation, high data rate and low form factor. The main drawback of the UWB technology is its receiver complexity. In order to overcome this barrier, this paper presents an implementation of a WBAN sensor node that uses UWB for data transmission and narrow band for data reception. This unique technique provides a means of achieving low power consuming sensor nodes with high data rate capability. The compact sensor platforms are implemented using off-the-shelf components; hence presents an economically viable solution for both commercial and research purposes.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"318 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77781392","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756160
Lei Yao, Jianming Zhao, Peng Li, Xu Liu, Y. Xu, M. Je
Considerable scientific and technological effort has been devoted to develop implantable wireless stimulator systems for biomedical applications. The main purpose of such stimulator system is to provide electrical excitation to human body cells to help patient re-gain lost body function or rectify fault body function, in an elegant way that there is no notable cosmetic difference when patients are equipped with these systems. This paper provides a brief summary of the historical timeline of the electrical stimulator and reviews challenges in the development of implantable wireless stimulator system. At last of this paper a system architecture design of an implantable stimulator system is given as an example for a specific muscle stimulation application.
{"title":"Implantable stimulator for biomedical applications","authors":"Lei Yao, Jianming Zhao, Peng Li, Xu Liu, Y. Xu, M. Je","doi":"10.1109/IMWS-BIO.2013.6756160","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756160","url":null,"abstract":"Considerable scientific and technological effort has been devoted to develop implantable wireless stimulator systems for biomedical applications. The main purpose of such stimulator system is to provide electrical excitation to human body cells to help patient re-gain lost body function or rectify fault body function, in an elegant way that there is no notable cosmetic difference when patients are equipped with these systems. This paper provides a brief summary of the historical timeline of the electrical stimulator and reviews challenges in the development of implantable wireless stimulator system. At last of this paper a system architecture design of an implantable stimulator system is given as an example for a specific muscle stimulation application.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"9 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83722256","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756200
Chuan Zheng, T. Hu, S. Qiao, Yongzhi Sun, J. Huangfu, L. Ran
Utilizing Doppler effect to detect bio-signals of vital signs has been attracting more and more interests. In this paper, we propose a time-domain algorithm for the hand gesture recognition. We introduce an extended differentiate and cross-multiply algorithm to solve the null point and the codomain restriction issues in traditional Doppler radar sensors, and retrieve the Doppler bio-signals of a moving hand from the demodulated phase signals based on a configuration of 2 or 3 radar sensors for 2-D or 3-D HGRs. Simulations validate the effectiveness of the proposed approach. Our method is capable of retrieving arbitrary hand movements, making it possible to be used in a wide range of HGR applications.
利用多普勒效应检测生命体征的生物信号已引起越来越多的关注。本文提出了一种用于手势识别的时域算法。我们引入了一种扩展的微分和交叉相乘算法来解决传统多普勒雷达传感器中的零点和上域限制问题，并基于2或3个雷达传感器配置的2- d或3- d hgr，从解调的相位信号中检索运动手的多普勒生物信号。仿真结果验证了该方法的有效性。我们的方法能够检索任意的手部运动，使其有可能在广泛的HGR应用中使用。
{"title":"Doppler bio-signal detection based time-domain hand gesture recognition","authors":"Chuan Zheng, T. Hu, S. Qiao, Yongzhi Sun, J. Huangfu, L. Ran","doi":"10.1109/IMWS-BIO.2013.6756200","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756200","url":null,"abstract":"Utilizing Doppler effect to detect bio-signals of vital signs has been attracting more and more interests. In this paper, we propose a time-domain algorithm for the hand gesture recognition. We introduce an extended differentiate and cross-multiply algorithm to solve the null point and the codomain restriction issues in traditional Doppler radar sensors, and retrieve the Doppler bio-signals of a moving hand from the demodulated phase signals based on a configuration of 2 or 3 radar sensors for 2-D or 3-D HGRs. Simulations validate the effectiveness of the proposed approach. Our method is capable of retrieving arbitrary hand movements, making it possible to be used in a wide range of HGR applications.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"1 1","pages":"3-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82881331","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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