Pub Date : 2011-03-28DOI: 10.1109/SAS.2011.5739803
M. Sekine, K. Maeno
Remote heart rate detection without body-attached probes is a promising technology for health care, monitoring of elderly people, emergency, and security. In this paper, we use a continuous wave (CW) microwave Doppler radar. It is important to eliminate the effect of body movement that is irrelevant to heartbeat such as respiration. In general, the displacements of them are larger than those of heartbeat. Therefore, we focus on the periodic variation of velocity of body movement due to heartbeat rather than the displacement variation of it. We detect a heart rate from a part of the wavelet frequency components with high periodicity. As a result of performance evaluation, our system enables to extract more accurate heartbeat interval than the traditional approach using the periodicity of an original Doppler signal.
{"title":"Non-contact heart rate detection using periodic variation in Doppler frequency","authors":"M. Sekine, K. Maeno","doi":"10.1109/SAS.2011.5739803","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739803","url":null,"abstract":"Remote heart rate detection without body-attached probes is a promising technology for health care, monitoring of elderly people, emergency, and security. In this paper, we use a continuous wave (CW) microwave Doppler radar. It is important to eliminate the effect of body movement that is irrelevant to heartbeat such as respiration. In general, the displacements of them are larger than those of heartbeat. Therefore, we focus on the periodic variation of velocity of body movement due to heartbeat rather than the displacement variation of it. We detect a heart rate from a part of the wavelet frequency components with high periodicity. As a result of performance evaluation, our system enables to extract more accurate heartbeat interval than the traditional approach using the periodicity of an original Doppler signal.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125585127","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739785
M. Bogosanovic, A. Al-Anbuky, G. Emms
This paper reports the findings of an experimental study on wood anisotropy measured using a free space horn/lens antenna system. A brief theoretical overview of the plane wave propagation through an anisotropic material introduces the parameters which are measured in this study. Measured data are presented and analyzed for a wide range of samples, introducing a categorization with attempt to simplify the problem posed by the great variability in material structure. We aim to demonstrate that the microwave signal transmitted through the wood is very ‘information rich’ and that different polarizations as well as angles of observations may provide us with better insight in the wood structure and its properties of interest for nondestructive industrial inspection.
{"title":"Microwave measurement of wood anisotropy","authors":"M. Bogosanovic, A. Al-Anbuky, G. Emms","doi":"10.1109/SAS.2011.5739785","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739785","url":null,"abstract":"This paper reports the findings of an experimental study on wood anisotropy measured using a free space horn/lens antenna system. A brief theoretical overview of the plane wave propagation through an anisotropic material introduces the parameters which are measured in this study. Measured data are presented and analyzed for a wide range of samples, introducing a categorization with attempt to simplify the problem posed by the great variability in material structure. We aim to demonstrate that the microwave signal transmitted through the wood is very ‘information rich’ and that different polarizations as well as angles of observations may provide us with better insight in the wood structure and its properties of interest for nondestructive industrial inspection.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122876236","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739815
Anjali Sharma, K. Sreenivas, Vinay Gupta, M. Tomar
Nanoclusters of SnO2 were synthesized using sol gel technique. The solution containing SnO2 nanoclusters was spin coated on Pt inert digital electrodes/glass substrate to deposit thin film of semiconducting nanoclusters of SnO2 (200nm). TEM images and electron diffraction pattern were studied to find out the size and polycrystalline nature of Tin oxide nanoclusters. The SnO2 thin film was used for NO2 gas sensing and was found to be highly sensitive to detect ultra-low concentrations (ppb range) of NO2 at room temperature.
{"title":"Room temperature detection of trace level NO2 gas using SnO2 nanoclusters","authors":"Anjali Sharma, K. Sreenivas, Vinay Gupta, M. Tomar","doi":"10.1109/SAS.2011.5739815","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739815","url":null,"abstract":"Nanoclusters of SnO<inf>2</inf> were synthesized using sol gel technique. The solution containing SnO<inf>2</inf> nanoclusters was spin coated on Pt inert digital electrodes/glass substrate to deposit thin film of semiconducting nanoclusters of SnO<inf>2</inf> (200nm). TEM images and electron diffraction pattern were studied to find out the size and polycrystalline nature of Tin oxide nanoclusters. The SnO<inf>2</inf> thin film was used for NO<inf>2</inf> gas sensing and was found to be highly sensitive to detect ultra-low concentrations (ppb range) of NO<inf>2</inf> at room temperature.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"263 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114549019","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739772
Bon-Ju Gu, Wang-Hoon Lee, K. Sawada, M. Ishida
In this study, we present a hybrid wireless smart temperature sensor using thermoelectric sensor and wireless transmitter. The thermoelectric sensor using SOI structure consists of 17 pairs of n- and p-type single-crystal silicon strips and selective absorption area. The sensitivity of the fabricated thermoelectric sensor was found to be approximately 190µV/°C. The wireless transmitter consists of an amplifier, a modulator and an oscillator. The dual pulse position modulation method uses two narrow pulses for the transmitter, and distance between two narrow pulses describes the amplitude of input signal. Oscillator with oscillation control switch allows operating with low power consumption.
{"title":"Fabrication of hybrid wireless smart temperature sensor","authors":"Bon-Ju Gu, Wang-Hoon Lee, K. Sawada, M. Ishida","doi":"10.1109/SAS.2011.5739772","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739772","url":null,"abstract":"In this study, we present a hybrid wireless smart temperature sensor using thermoelectric sensor and wireless transmitter. The thermoelectric sensor using SOI structure consists of 17 pairs of n- and p-type single-crystal silicon strips and selective absorption area. The sensitivity of the fabricated thermoelectric sensor was found to be approximately 190µV/°C. The wireless transmitter consists of an amplifier, a modulator and an oscillator. The dual pulse position modulation method uses two narrow pulses for the transmitter, and distance between two narrow pulses describes the amplitude of input signal. Oscillator with oscillation control switch allows operating with low power consumption.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123662448","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739766
Rui Zhang, L. Reindl
This paper presents a modified complementary separate-bias Kalman filter for orientation determination of pedestrian motions by using a inertial measurement unit (IMU) module, which contains gyroscopes, accelerometers and magnetometers as an Attitude and Heading Reference System (AHRS). The filter consists of two main functions: the complementary separate-bias Kalman filtering avoids the modelling of pedestrian motions and fuses the sensed data; the magnetic disturbance detection and minimization provides robustness and stability when the sensor module is experiencing local magnetic disturbances. Test case includes stairs climbing indoors and long-distance walking outdoors. In both case the filter is able to provide stable orientation data and minimize the impact of local magnetic field disturbance.
{"title":"Pedestrian motion based inertial sensor fusion by a modified complementary separate-bias Kalman filter","authors":"Rui Zhang, L. Reindl","doi":"10.1109/SAS.2011.5739766","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739766","url":null,"abstract":"This paper presents a modified complementary separate-bias Kalman filter for orientation determination of pedestrian motions by using a inertial measurement unit (IMU) module, which contains gyroscopes, accelerometers and magnetometers as an Attitude and Heading Reference System (AHRS). The filter consists of two main functions: the complementary separate-bias Kalman filtering avoids the modelling of pedestrian motions and fuses the sensed data; the magnetic disturbance detection and minimization provides robustness and stability when the sensor module is experiencing local magnetic disturbances. Test case includes stairs climbing indoors and long-distance walking outdoors. In both case the filter is able to provide stable orientation data and minimize the impact of local magnetic field disturbance.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122614495","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739784
Mitsugu Otsu, R. Nakamura, A. Kajiwara
This paper presents a respiratory rate monitoring sensor using stepped-FM ultra-wideband impulse-radio (UWB-IR), which does not require high speed A/D devices unlike conventional UWB-IR sensors. This sensor is also capable of co-existing with other narrowband systems operating in overlaid frequency band, since it can be designed to have any spectrum hole without causing interference with other wireless systems. The set-up has been fabricated where the algorithm detecting the respiration rate and other movements are developed. Please note that the A/D used in the set-up of 1GHz UWB is 10ks/s. It is found from the measurement results that the stepped-FM sensor is useful to detect the respiration rate and various movements without causing the other narrowband system.
{"title":"Remote respiration monitoring sensor using stepped-FM","authors":"Mitsugu Otsu, R. Nakamura, A. Kajiwara","doi":"10.1109/SAS.2011.5739784","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739784","url":null,"abstract":"This paper presents a respiratory rate monitoring sensor using stepped-FM ultra-wideband impulse-radio (UWB-IR), which does not require high speed A/D devices unlike conventional UWB-IR sensors. This sensor is also capable of co-existing with other narrowband systems operating in overlaid frequency band, since it can be designed to have any spectrum hole without causing interference with other wireless systems. The set-up has been fabricated where the algorithm detecting the respiration rate and other movements are developed. Please note that the A/D used in the set-up of 1GHz UWB is 10ks/s. It is found from the measurement results that the stepped-FM sensor is useful to detect the respiration rate and various movements without causing the other narrowband system.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"24 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123274338","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739797
M. Tanevski, A. Boegli, P. Farine, F. Merli, J. Zurcher, A. Skrivervik
In this paper a new wireless sensor node intended for use in ultra-low power Wireless Sensor Networks (WSN) is presented. The node uses commercial of-the-shelf radio, microcontroller and a custom developed antenna embedded in the housing. Over-molding with food-compatible material is used to improve the mechanical robustness of the node. The present work is targeted at commercial food cold chain management and temperature monitoring applications. The node presented operates in the license-free European and US sub-GHz Industrial, Scientific and Medical (ISM) band. The paper provides an insight into the platform's hardware giving the results of the test measurements. Results obtained from a demo network are also shown including the first results from long-term battery lifetime measurements.
{"title":"Robust ultra low power Wireless Sensor platform with embedded over-molded antenna","authors":"M. Tanevski, A. Boegli, P. Farine, F. Merli, J. Zurcher, A. Skrivervik","doi":"10.1109/SAS.2011.5739797","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739797","url":null,"abstract":"In this paper a new wireless sensor node intended for use in ultra-low power Wireless Sensor Networks (WSN) is presented. The node uses commercial of-the-shelf radio, microcontroller and a custom developed antenna embedded in the housing. Over-molding with food-compatible material is used to improve the mechanical robustness of the node. The present work is targeted at commercial food cold chain management and temperature monitoring applications. The node presented operates in the license-free European and US sub-GHz Industrial, Scientific and Medical (ISM) band. The paper provides an insight into the platform's hardware giving the results of the test measurements. Results obtained from a demo network are also shown including the first results from long-term battery lifetime measurements.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129825236","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739787
Jongwoo Jun, Jungmin Kim, Jinyi Lee, Youngmin Park
Paramagnetic metals like aluminum alloys are used in aircraft due to their light weight. Magneto-optical eddy current imager (MOI) is a nondestructive magneto-optical technique that is used to inspect fatigue cracks and corrosion in the aluminum alloy of aged aircraft. Unfortunately, the quantitative distribution of distorted magnetic flux leakage (MFL) from crack tips is difficult to measure, and therefore, the shapes and sizes of cracks are difficult to evaluate quantitatively. Additionally, the inspected results vary significantly according to the skill level of the worker. Hand-held magnetic camera using Hall sensor array for crack inspection in paramagnetic materials is developed by research center for real time NDT. Distorted alternate currents (DAC) are produced around the crack tips when the sheet type induced current (STIC) is induced on the specimen in the hand-held magnetic camera system. The alternate MFL resulting from the DAC is detected using a Hall sensor array. The root-mean-squared MFL after the use of high pass filter is converted to a digital signal by an analog-to-digital converter (ADC). And it is stored in a computer, and processed by interface and operation software. An algorithm for the quantitative nondestructive testing and evaluation of cracks of different shapes and sizes on the aluminum alloy, Al7075, is proposed in this paper.
{"title":"A hand held magnetic camera system for real time crack inspection","authors":"Jongwoo Jun, Jungmin Kim, Jinyi Lee, Youngmin Park","doi":"10.1109/SAS.2011.5739787","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739787","url":null,"abstract":"Paramagnetic metals like aluminum alloys are used in aircraft due to their light weight. Magneto-optical eddy current imager (MOI) is a nondestructive magneto-optical technique that is used to inspect fatigue cracks and corrosion in the aluminum alloy of aged aircraft. Unfortunately, the quantitative distribution of distorted magnetic flux leakage (MFL) from crack tips is difficult to measure, and therefore, the shapes and sizes of cracks are difficult to evaluate quantitatively. Additionally, the inspected results vary significantly according to the skill level of the worker. Hand-held magnetic camera using Hall sensor array for crack inspection in paramagnetic materials is developed by research center for real time NDT. Distorted alternate currents (DAC) are produced around the crack tips when the sheet type induced current (STIC) is induced on the specimen in the hand-held magnetic camera system. The alternate MFL resulting from the DAC is detected using a Hall sensor array. The root-mean-squared MFL after the use of high pass filter is converted to a digital signal by an analog-to-digital converter (ADC). And it is stored in a computer, and processed by interface and operation software. An algorithm for the quantitative nondestructive testing and evaluation of cracks of different shapes and sizes on the aluminum alloy, Al7075, is proposed in this paper.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130377588","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739810
T. Bera, J. Nagaraju
Surface electrodes in EIT phantoms usually reduce the SNR of the boundary data due to their design and development errors. A novel gold electrode array with high geometric precision is developed for 2D electrical impedance tomography to increase the SNR of boundary data. Gold thin films are deposited on a flexible FR4 sheet using electro-deposition process to make a sixteen electrode array with electrodes of identical geometry. Boundary data are collected using a USB based high speed data acquisition system in a LabVIEW platform and the data are compared. Results show that the SNR of the boundary potentials obtained with gold electrode array is higher than that of a stainless steel array. Resistivity images reconstructed using EIDORS showed that the image quality is improved with gold electrode array.
{"title":"Gold electrode sensors for electrical impedance tomography (EIT) studies","authors":"T. Bera, J. Nagaraju","doi":"10.1109/SAS.2011.5739810","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739810","url":null,"abstract":"Surface electrodes in EIT phantoms usually reduce the SNR of the boundary data due to their design and development errors. A novel gold electrode array with high geometric precision is developed for 2D electrical impedance tomography to increase the SNR of boundary data. Gold thin films are deposited on a flexible FR4 sheet using electro-deposition process to make a sixteen electrode array with electrodes of identical geometry. Boundary data are collected using a USB based high speed data acquisition system in a LabVIEW platform and the data are compared. Results show that the SNR of the boundary potentials obtained with gold electrode array is higher than that of a stainless steel array. Resistivity images reconstructed using EIDORS showed that the image quality is improved with gold electrode array.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132663092","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739782
N. Kostesha, M. Schmidt, F. Bosco, Jesper Kenneth Olsen, C. Johnsen, K. Nielsen, J. Jeppesen, T. S. Alstrøm, J. Larsen, T. Thundat, M. Jakobsen, A. Boisen
Multiple independent sensors are used in security and military applications in order to increase sensitivity, selectivity and data reliability. The Xsense project has been initiated at the Technical University of Denmark in collaboration with a number of partners in an effort to produce a handheld sensor for trace detection of explosives. We are using micro- and nano technological approaches for integrating four sensing principles into a single device. At the end of the project, the consortium aims at having delivered a sensor platform consisting of four independent detector principles capable of identifying concentrations of TNT, DNT, HMX and RDX at sub parts-per-billion (ppb) levels and with a false positive rate less than 1 parts-per-thousand. The specificity, sensitivity, reliability and the speed of responses are ensured by the use of advanced data processing, surface functionalization and nanostructured sensors and sensor design.
{"title":"The Xsense project: The application of an intelligent sensor array for high sensitivity handheld explosives detectors","authors":"N. Kostesha, M. Schmidt, F. Bosco, Jesper Kenneth Olsen, C. Johnsen, K. Nielsen, J. Jeppesen, T. S. Alstrøm, J. Larsen, T. Thundat, M. Jakobsen, A. Boisen","doi":"10.1109/SAS.2011.5739782","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739782","url":null,"abstract":"Multiple independent sensors are used in security and military applications in order to increase sensitivity, selectivity and data reliability. The Xsense project has been initiated at the Technical University of Denmark in collaboration with a number of partners in an effort to produce a handheld sensor for trace detection of explosives. We are using micro- and nano technological approaches for integrating four sensing principles into a single device. At the end of the project, the consortium aims at having delivered a sensor platform consisting of four independent detector principles capable of identifying concentrations of TNT, DNT, HMX and RDX at sub parts-per-billion (ppb) levels and with a false positive rate less than 1 parts-per-thousand. The specificity, sensitivity, reliability and the speed of responses are ensured by the use of advanced data processing, surface functionalization and nanostructured sensors and sensor design.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129402092","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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