Pub Date : 1900-01-01DOI: 10.1109/BIOWIRELESS.2016.7445556
Tien-Yu Huang, Jenshan Lin
The harmonics and intermodulation products generated by two subjects simultaneously present in a system is studied. Utilizing the intermodulation products, an algorithm with 12 possible output states is proposed to classify the detected spectrum under different test scenarios. The two-subject detection algorithm is experimentally verified to detect the existence of two subjects versus one subject. The technique can be implemented in a microstrip patch antenna system with broad beamwidth without using directional phased-array antenna.
{"title":"Intermodulation effect of detecting two subjects within antenna beamwidth of a CW Doppler radar","authors":"Tien-Yu Huang, Jenshan Lin","doi":"10.1109/BIOWIRELESS.2016.7445556","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445556","url":null,"abstract":"The harmonics and intermodulation products generated by two subjects simultaneously present in a system is studied. Utilizing the intermodulation products, an algorithm with 12 possible output states is proposed to classify the detected spectrum under different test scenarios. The two-subject detection algorithm is experimentally verified to detect the existence of two subjects versus one subject. The technique can be implemented in a microstrip patch antenna system with broad beamwidth without using directional phased-array antenna.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"15 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":"129235108","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/BIOWIRELESS.2016.7445573
Ahmad Usman, J. Bito, M. Tentzeris
In this paper, we present the design, fabrication and characterization of implantable coils, operating at 13.56 MHz ISM band for biomedical applications. Rogers RO 4003C substrate was used for the prototype of the implantable coil while Rogers RO 3850 flexible substrate was used for the external transmitter coil. The Inkjet masking technique was used for the patterning the planar coil on the flexible substrate. Wireless power transfer efficiency measurements were conducted in free space and water environments, varying the operating distance between the prototype coils from 5mm to 20mm, featuring transfer efficiencies upto 55% and 35%, respectively.
{"title":"Flexible & planar implantable resonant coils for wireless power transfer using Inkjet masking technique","authors":"Ahmad Usman, J. Bito, M. Tentzeris","doi":"10.1109/BIOWIRELESS.2016.7445573","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445573","url":null,"abstract":"In this paper, we present the design, fabrication and characterization of implantable coils, operating at 13.56 MHz ISM band for biomedical applications. Rogers RO 4003C substrate was used for the prototype of the implantable coil while Rogers RO 3850 flexible substrate was used for the external transmitter coil. The Inkjet masking technique was used for the patterning the planar coil on the flexible substrate. Wireless power transfer efficiency measurements were conducted in free space and water environments, varying the operating distance between the prototype coils from 5mm to 20mm, featuring transfer efficiencies upto 55% and 35%, respectively.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"44 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":"134148079","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/BIOWIRELESS.2016.7445558
Ashikur Rahman, E. Yavari, V. Lubecke, O. Lubecke
A continuous-wave (CW) Doppler radar-based unique-identification system has been studied. Experiments have been performed using a neural network based classifier to uniquely identify individuals based on the variation in their breathing energy, frequency and patterns captured by the radar. Our work shows the possibility of non-contact unique identification where camera based system is not preferred. It is demonstrated that the system is capable of identifying individuals with more than 90% accuracy. This study also has impact on radar-based breathing pattern classification for health diagnostics.
{"title":"Noncontact Doppler radar unique identification system using neural network classifier on life signs","authors":"Ashikur Rahman, E. Yavari, V. Lubecke, O. Lubecke","doi":"10.1109/BIOWIRELESS.2016.7445558","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445558","url":null,"abstract":"A continuous-wave (CW) Doppler radar-based unique-identification system has been studied. Experiments have been performed using a neural network based classifier to uniquely identify individuals based on the variation in their breathing energy, frequency and patterns captured by the radar. Our work shows the possibility of non-contact unique identification where camera based system is not preferred. It is demonstrated that the system is capable of identifying individuals with more than 90% accuracy. This study also has impact on radar-based breathing pattern classification for health diagnostics.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"15 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":"125668047","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/BIOWIRELESS.2016.7445562
F. I. Jamal, S. Guha, M. Eissa, J. Borngraber, C. Meliani, D. Kissinger, J. Wessel
This paper presents the design and comparison of three K-band sensing oscillators in standard 0.25 μm SiGe:C BiCMOS technology with featuring an open-stub, shunt-stub and a combination of both. The different stub types are combined with the inductive and capacitive elements of the particular oscillator and serve as the sensing elements in the respective setup. The input impedances of the stubs highly depend on the permittivity of the medium. Therefore, the oscillation frequencies correspond to the dielectric material under test (MUT). The sensors response to different dielectric properties has been investigated using different Methanol-Ethanol solutions The conducted experiments show that the proposed architectures indicate the MUTs permittivity with a maximum frequency shift of 4.3 % for a change in permittivity of 2.4. Each of three sensors has an chip-area of 0.6 mm2 and consumes less than 12 mW power. The proposed sensor is a potential component for future low-power front-ends to perform minimally invasive investigations of bio-materials.
{"title":"Comparison of microstrip stub resonators for dielectric sensing in low-power K-band VCO","authors":"F. I. Jamal, S. Guha, M. Eissa, J. Borngraber, C. Meliani, D. Kissinger, J. Wessel","doi":"10.1109/BIOWIRELESS.2016.7445562","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445562","url":null,"abstract":"This paper presents the design and comparison of three K-band sensing oscillators in standard 0.25 μm SiGe:C BiCMOS technology with featuring an open-stub, shunt-stub and a combination of both. The different stub types are combined with the inductive and capacitive elements of the particular oscillator and serve as the sensing elements in the respective setup. The input impedances of the stubs highly depend on the permittivity of the medium. Therefore, the oscillation frequencies correspond to the dielectric material under test (MUT). The sensors response to different dielectric properties has been investigated using different Methanol-Ethanol solutions The conducted experiments show that the proposed architectures indicate the MUTs permittivity with a maximum frequency shift of 4.3 % for a change in permittivity of 2.4. Each of three sensors has an chip-area of 0.6 mm2 and consumes less than 12 mW power. The proposed sensor is a potential component for future low-power front-ends to perform minimally invasive investigations of bio-materials.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"76 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":"120850270","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/BIOWIRELESS.2016.7445572
Jiaming Yan, Heng Zhao, Yusheng Li, L. Sun, Hong Hong, Xiaohua Zhu
This paper addresses an ab-initio research of the human respiratory detection behind the reinforced concrete wall using the ultra-wide-band (UWB) radar, which can be used for battle field and victim search applications. The customized signal processing algorithms is applied and the impulse ultra-wide-band (UWB) radar system is employed to detect human respiration from different distances. The results show the accuracy and robustness of our system in through the reinforced concrete wall respiration detection from 0.7 m to 2.5 m.
{"title":"Through-the-wall human respiration detection using impulse ultra-wide-band radar","authors":"Jiaming Yan, Heng Zhao, Yusheng Li, L. Sun, Hong Hong, Xiaohua Zhu","doi":"10.1109/BIOWIRELESS.2016.7445572","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445572","url":null,"abstract":"This paper addresses an ab-initio research of the human respiratory detection behind the reinforced concrete wall using the ultra-wide-band (UWB) radar, which can be used for battle field and victim search applications. The customized signal processing algorithms is applied and the impulse ultra-wide-band (UWB) radar system is employed to detect human respiration from different distances. The results show the accuracy and robustness of our system in through the reinforced concrete wall respiration detection from 0.7 m to 2.5 m.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"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":"130796128","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/BIOWIRELESS.2016.7445560
S. Schmidt, M. Schusler, C. Damm, C. Schuster, R. Jakoby
This paper discusses a low cost coplanar differential sensor at 40 GHz suitable for the lab on chip integration. Its ability to resolve small permittivity differences with a high dynamic range was proved by analytical calculations and full-wave EM simulations and was finally validated with measurements. A sensitivity of τ = 2.5dB/%Δεr>eff was achieved for small permittivity differences. Thereby, a change of 100 % ethanol to 99 % ethanol mixed with 1 % DI water, results in a difference of ΔS21 = 5 dB. In order to further minimize the complexity e.g. for single use purposes, the influence of the absence of the termination resistors of the couplers was investigated.
{"title":"Concept and design of a 40 GHz differential sensor for the analysis of biomedical substances","authors":"S. Schmidt, M. Schusler, C. Damm, C. Schuster, R. Jakoby","doi":"10.1109/BIOWIRELESS.2016.7445560","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445560","url":null,"abstract":"This paper discusses a low cost coplanar differential sensor at 40 GHz suitable for the lab on chip integration. Its ability to resolve small permittivity differences with a high dynamic range was proved by analytical calculations and full-wave EM simulations and was finally validated with measurements. A sensitivity of τ = 2.5dB/%Δεr>eff was achieved for small permittivity differences. Thereby, a change of 100 % ethanol to 99 % ethanol mixed with 1 % DI water, results in a difference of ΔS21 = 5 dB. In order to further minimize the complexity e.g. for single use purposes, the influence of the absence of the termination resistors of the couplers was investigated.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"125 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":"131215056","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/BIOWIRELESS.2016.7445564
F. Michler, F. Lenze, M. Schusler, R. Jakoby
In the growing field of biosensing, the dielectric analysis of liquids and cell suspensions has become an important research topic. This paper suggests a novel calibration scheme for capacitive sensors, which exclusively relies on liquids instead of conventional termination standards. Moreover, the influence of several parameters on the reliability of the measurements is investigated by simulation. Finally, the concept of calibration is proven by measurements obtained using three different sensor prototypes.
{"title":"Calibration scheme for microwave biosensors using exclusively liquid calibration standards","authors":"F. Michler, F. Lenze, M. Schusler, R. Jakoby","doi":"10.1109/BIOWIRELESS.2016.7445564","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445564","url":null,"abstract":"In the growing field of biosensing, the dielectric analysis of liquids and cell suspensions has become an important research topic. This paper suggests a novel calibration scheme for capacitive sensors, which exclusively relies on liquids instead of conventional termination standards. Moreover, the influence of several parameters on the reliability of the measurements is investigated by simulation. Finally, the concept of calibration is proven by measurements obtained using three different sensor prototypes.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"14 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":"133838934","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/BIOWIRELESS.2016.7445549
Souvik Dubey, J. Chiao
Gastroparesis is a disorder reported to be prevalent among 30-50% of diabetics. Gastric electrical stimulation (GES) to the stomach has been used to treat the symptoms of gastroparesis. It usually consists of a large stimulator implanted inside the abdominal cavity with electrodes attached to the stomach tissues. In this work, we have designed, developed and tested a wirelessly powered gastric stimulator based on a flexible substrate that can be rolled into a capsule for endoscopic delivery and implantation. The stimulator can be conformed to the stomach curvature and attached onto the tissues. Characterization of transmitter and receiver antennas to wirelessly power the implant devices was conducted with near-field inductive coupling. Power transfer efficiency of the system was found to be 14 % at an antenna separation distance of 4 cm.
{"title":"Power transfer for a flexible gastric stimulator","authors":"Souvik Dubey, J. Chiao","doi":"10.1109/BIOWIRELESS.2016.7445549","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445549","url":null,"abstract":"Gastroparesis is a disorder reported to be prevalent among 30-50% of diabetics. Gastric electrical stimulation (GES) to the stomach has been used to treat the symptoms of gastroparesis. It usually consists of a large stimulator implanted inside the abdominal cavity with electrodes attached to the stomach tissues. In this work, we have designed, developed and tested a wirelessly powered gastric stimulator based on a flexible substrate that can be rolled into a capsule for endoscopic delivery and implantation. The stimulator can be conformed to the stomach curvature and attached onto the tissues. Characterization of transmitter and receiver antennas to wirelessly power the implant devices was conducted with near-field inductive coupling. Power transfer efficiency of the system was found to be 14 % at an antenna separation distance of 4 cm.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"25 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":"121998512","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/BIOWIRELESS.2016.7445547
B. Noroozi, B. Morshed
Fully passive wireless body-worn sensors that collect physiological signals in natural settings is practical for seamless and unobtrusive monitoring of patients for medical cyber physical systems (CPS). In this regard, we have previously presented a novel Resistive Wireless Analog Passive Sensor (rWAPS), which is fully-passive, fast, low cost, and operates on the near field induction coupling method. Printed spiral coils (PSC) are one of the best solutions for near-field wireless communication for this fully-passive sensor. This paper describes a formal method to implement and optimize PSC coil pairs for such a system. Iterative process is required to reach optimal solutions of this complex multivariate optimization problem. After optimum design based on coil dimension, track size, and number of turns, a coil pair was fabricated on 2-layer PCB. The secondary coil size was restricted to a small footprint of 20mm, while the carrier frequency was selected as 13.56 MHz within ISM frequency band. Evaluation of the measurement from the prototypes and theoretically calculated results were found to be in agreement. This approach of PSC design optimization is practical for its application in our previously reported resistive transducer based wireless analog passive sensors (rWAPS) for body worn and wearable medical CPS.
{"title":"Formal method for PSC design optimization of 13.56 MHz resistive Wireless Analog Passive Sensors (rWAPS)","authors":"B. Noroozi, B. Morshed","doi":"10.1109/BIOWIRELESS.2016.7445547","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445547","url":null,"abstract":"Fully passive wireless body-worn sensors that collect physiological signals in natural settings is practical for seamless and unobtrusive monitoring of patients for medical cyber physical systems (CPS). In this regard, we have previously presented a novel Resistive Wireless Analog Passive Sensor (rWAPS), which is fully-passive, fast, low cost, and operates on the near field induction coupling method. Printed spiral coils (PSC) are one of the best solutions for near-field wireless communication for this fully-passive sensor. This paper describes a formal method to implement and optimize PSC coil pairs for such a system. Iterative process is required to reach optimal solutions of this complex multivariate optimization problem. After optimum design based on coil dimension, track size, and number of turns, a coil pair was fabricated on 2-layer PCB. The secondary coil size was restricted to a small footprint of 20mm, while the carrier frequency was selected as 13.56 MHz within ISM frequency band. Evaluation of the measurement from the prototypes and theoretically calculated results were found to be in agreement. This approach of PSC design optimization is practical for its application in our previously reported resistive transducer based wireless analog passive sensors (rWAPS) for body worn and wearable medical CPS.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","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":"126842511","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/BIOWIRELESS.2016.7445567
Zheng Wang, Y. Raval, T. Tzeng, Brian W. Booth, B. Flaherty, David S. Peterson, J. Moore, D. Rosenmann, R. Divan, G. Yu, P. Wang
We demonstrate effective time domain detection and differentiation of single particles and cells with a simple radio-frequency interferometer. Solutions of particle mixtures (~4 μm silica and ~10 μm polystyrene) and cell mixtures (viable and non-viable yeast cells, normal and cancer human breast cells, healthy and malaria infected red blood cells) are infused into a microfluidic channel, separately, and measured at ~ 3 GHz in time domain. The results show that individual particles and cells can be effectively detected and differentiated. With better control of cell positions, the interferometer is promising to be an effective tool for single cell based biomedical studies.
{"title":"Time domain detection and differentiation of single particles and cells with a radio frequency interferometer","authors":"Zheng Wang, Y. Raval, T. Tzeng, Brian W. Booth, B. Flaherty, David S. Peterson, J. Moore, D. Rosenmann, R. Divan, G. Yu, P. Wang","doi":"10.1109/BIOWIRELESS.2016.7445567","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445567","url":null,"abstract":"We demonstrate effective time domain detection and differentiation of single particles and cells with a simple radio-frequency interferometer. Solutions of particle mixtures (~4 μm silica and ~10 μm polystyrene) and cell mixtures (viable and non-viable yeast cells, normal and cancer human breast cells, healthy and malaria infected red blood cells) are infused into a microfluidic channel, separately, and measured at ~ 3 GHz in time domain. The results show that individual particles and cells can be effectively detected and differentiated. With better control of cell positions, the interferometer is promising to be an effective tool for single cell based biomedical studies.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","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":"124328376","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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