The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
Toshio Tsuji - One of the best experts on this subject based on the ideXlab platform.
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A simple accurate chest-compression depth gauge using Magnetic Coils during cardiopulmonary resuscitation
Review of Scientific Instruments, 2015Co-Authors: Akihiko Kandori, Yuko Sano, Yuhua Zhang, Toshio TsujiAbstract:This paper describes a new method for calculating chest compression depth and a simple chest-compression gauge for validating the accuracy of the method. The chest-compression gauge has two plates incorporating two Magnetic Coils, a spring, and an accelerometer. The Coils are located at both ends of the spring, and the accelerometer is set on the bottom plate. Waveforms obtained using the Magnetic Coils (hereafter, “Magnetic waveforms”), which are proportional to compression-force waveforms and the acceleration waveforms were measured at the same time. The weight factor expressing the relationship between the second derivatives of the Magnetic waveforms and the measured acceleration waveforms was calculated. An estimated-compression-displacement (depth) waveform was obtained by multiplying the weight factor and the Magnetic waveforms. Displacements of two large springs (with similar spring constants) within a thorax and displacements of a cardiopulmonary resuscitation training manikin were measured using ...
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A simple accurate chest-compression depth gauge using Magnetic Coils during cardiopulmonary resuscitation
The Review of scientific instruments, 2015Co-Authors: Akihiko Kandori, Yuko Sano, Yuhua Zhang, Toshio TsujiAbstract:This paper describes a new method for calculating chest compression depth and a simple chest-compression gauge for validating the accuracy of the method. The chest-compression gauge has two plates incorporating two Magnetic Coils, a spring, and an accelerometer. The Coils are located at both ends of the spring, and the accelerometer is set on the bottom plate. Waveforms obtained using the Magnetic Coils (hereafter, "Magnetic waveforms"), which are proportional to compression-force waveforms and the acceleration waveforms were measured at the same time. The weight factor expressing the relationship between the second derivatives of the Magnetic waveforms and the measured acceleration waveforms was calculated. An estimated-compression-displacement (depth) waveform was obtained by multiplying the weight factor and the Magnetic waveforms. Displacements of two large springs (with similar spring constants) within a thorax and displacements of a cardiopulmonary resuscitation training manikin were measured using the gauge to validate the accuracy of the calculated waveform. A laser-displacement detection system was used to compare the real displacement waveform and the estimated waveform. Intraclass correlation coefficients (ICCs) between the real displacement using the laser system and the estimated displacement waveforms were calculated. The estimated displacement error of the compression depth was within 2 mm (
Akihiko Kandori - One of the best experts on this subject based on the ideXlab platform.
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A simple accurate chest-compression depth gauge using Magnetic Coils during cardiopulmonary resuscitation
Review of Scientific Instruments, 2015Co-Authors: Akihiko Kandori, Yuko Sano, Yuhua Zhang, Toshio TsujiAbstract:This paper describes a new method for calculating chest compression depth and a simple chest-compression gauge for validating the accuracy of the method. The chest-compression gauge has two plates incorporating two Magnetic Coils, a spring, and an accelerometer. The Coils are located at both ends of the spring, and the accelerometer is set on the bottom plate. Waveforms obtained using the Magnetic Coils (hereafter, “Magnetic waveforms”), which are proportional to compression-force waveforms and the acceleration waveforms were measured at the same time. The weight factor expressing the relationship between the second derivatives of the Magnetic waveforms and the measured acceleration waveforms was calculated. An estimated-compression-displacement (depth) waveform was obtained by multiplying the weight factor and the Magnetic waveforms. Displacements of two large springs (with similar spring constants) within a thorax and displacements of a cardiopulmonary resuscitation training manikin were measured using ...
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A simple accurate chest-compression depth gauge using Magnetic Coils during cardiopulmonary resuscitation
The Review of scientific instruments, 2015Co-Authors: Akihiko Kandori, Yuko Sano, Yuhua Zhang, Toshio TsujiAbstract:This paper describes a new method for calculating chest compression depth and a simple chest-compression gauge for validating the accuracy of the method. The chest-compression gauge has two plates incorporating two Magnetic Coils, a spring, and an accelerometer. The Coils are located at both ends of the spring, and the accelerometer is set on the bottom plate. Waveforms obtained using the Magnetic Coils (hereafter, "Magnetic waveforms"), which are proportional to compression-force waveforms and the acceleration waveforms were measured at the same time. The weight factor expressing the relationship between the second derivatives of the Magnetic waveforms and the measured acceleration waveforms was calculated. An estimated-compression-displacement (depth) waveform was obtained by multiplying the weight factor and the Magnetic waveforms. Displacements of two large springs (with similar spring constants) within a thorax and displacements of a cardiopulmonary resuscitation training manikin were measured using the gauge to validate the accuracy of the calculated waveform. A laser-displacement detection system was used to compare the real displacement waveform and the estimated waveform. Intraclass correlation coefficients (ICCs) between the real displacement using the laser system and the estimated displacement waveforms were calculated. The estimated displacement error of the compression depth was within 2 mm (
Bo Rao - One of the best experts on this subject based on the ideXlab platform.
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Design, installation, analysis and testing of in-vessel Magnetic Coils on J-TEXT
2016Co-Authors: Yonghua Ding, Bo RaoAbstract:Abstract. In this paper, a set of 12 in-vessel resonant Magnetic perturbation Coils are designed for the J-TEXT to investigate the interactions between external resonant Magnetic perturbations (RMPs) and a tokamak plasma. Since the Coils will be fed with AC 10kA/10kHz and mounted inside the vacuum vessel where the pressure is E-7 Pa and the center-line field reaches 3 T, the Coils design adopted and installed is a water-cooled hollow copper conductor insulated with polyamide and cured epoxy resin, and then housed inside a welded stainless steel jacket that forms a vacuum boundary. A solution of how the Coils are connected to the power supply outside the vacuum in a limited space is also given in this paper. The primary challenge in the design of these Coils is dressing the copper conductor with stainless steel jacket by welding without overheating the polyamide and cured epoxy resin insulator. 1
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design of the in vessel Magnetic Coils for generating a rotating resonant Magnetic perturbation on the j text tokamak plasma
IEEE Transactions on Applied Superconductivity, 2012Co-Authors: Bo Rao, G Zhuang, M Zhang, Y H Ding, C D Hao, Y S Cen, J Y NanAbstract:To investigate the interactions between external resonant Magnetic perturbations (RMPs) and a tokamak plasma, a set of saddle Coils are designed for the J-TEXT. A method for designing RMP field structure based on Fourier transform is used in this paper. Since the Coils will be mounted inside the vacuum vessel where the pressure is about 10-7, an airproof multi-layer structure is adopted to avoid contaminating the vacuum environment. Besides, stress and thermal analysis and the AC response of Magnetic field are also given.
P J Lee - One of the best experts on this subject based on the ideXlab platform.
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isotropic round wire multifilament cuprate superconductor for generation of Magnetic fields above 30 t
Nature Materials, 2014Co-Authors: D C Larbalestier, J Jiang, U P Trociewitz, F Kametani, C Scheuerlein, Matthieu Dalbancanassy, M Matras, Peng Chen, N Craig, P J LeeAbstract:Cuprate superconductors have found limited application for high-field magnets because of difficulties related to grain boundaries. Now, this issue is partially overcome and round wires suitable for Magnetic Coils are fabricated from Bi2Sr2CaCu2O8−x.
Zhenshi Wang - One of the best experts on this subject based on the ideXlab platform.
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Nested three-layer optimisation method for Magnetic Coils used in 3 kW vehicle-mounted wireless power transfer system
Iet Power Electronics, 2016Co-Authors: Zhenshi WangAbstract:Wireless power transfer is becoming more and more popular, especially for the charging design of electric vehicles. In this study, a novel nested three-layer optimisation method based on finite element model (FEM) is proposed to determine the structure of Magnetic Coils, which can increase the coupling coefficient, and hence, improve the transfer efficiency. The boundary conditions which consider practical situations for electric vehicles are first elaborated, then the optimisation flow is detailed and further analysed. Two Magnetic Coils are fabricated based on the optimised structure parameters, and their electric parameters, including self-inductances, mutual inductances as well as parasitic resistances, are measured and compared with those extracted from FEM, in addition, the Magnetic flux densities around Magnetic Coils are also analysed. At last, a 3 kW prototype with 95% efficiency over a 20 cm transfer distance is achieved to validate this research results.
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Nested three-layer optimisation method for Magnetic Coils used in 3 kW vehicle-mounted wireless power transfer system
IET Power Electronics, 2016Co-Authors: Zhenshi Wang, Xuezhe Wei, Haifeng DaiAbstract:Wireless power transfer is becoming more and more popular, especially for the charging design of electric vehicles. In this study, a novel nested three-layer optimisation method based on finite element model (FEM) is proposed to determine the structure of Magnetic Coils, which can increase the coupling coefficient, and hence, improve the transfer efficiency. The boundary conditions which consider practical situations for electric vehicles are first elaborated, then the optimisation flow is detailed and further analysed. Two Magnetic Coils are fabricated based on the optimised structure parameters, and their electric parameters, including self-inductances, mutual inductances as well as parasitic resistances, are measured and compared with those extracted from FEM, in addition, the Magnetic flux densities around Magnetic Coils are also analysed. At last, a 3 kW prototype with 95% efficiency over a 20 cm transfer distance is achieved to validate this research results.
