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  • IOP Publishing  (15)
  • Yu, Jie  (15)
  • 1
    Online Resource
    Online Resource
    Research Progress of the Temperature Monitoring Technology of the Electric Joints in the Ring Main Unit
    IOP Publishing ; 2021
    In:  Journal of Physics: Conference Series Vol. 2005, No. 1 ( 2021-08-01), p. 012216-
    Details
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 2005, No. 1 ( 2021-08-01), p. 012216-
    Abstract: This article summarizes several existing temperature monitoring methods for cable joints inside the ring main unit, mainly introducing infrared temperature measurement, fluorescent optical fiber detection, passive wireless surface acoustic wave temperature measurement, and wireless temperature sensor measurement. Then, the above methods were compared, and the advantages and disadvantages of each method were clarified. Finally, the research on the temperature monitoring method of the cable joints in the ring main unit is summarized. And the follow-up development direction of the passive wireless surface acoustic wave temperature measurement method in the temperature measurement of the cable joints of the ring main unit is prospected. It provides some reference for the research on the temperature monitoring method of the cable joints inside the ring main unit in the future.
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    URL: Article
    DOI: 10.1088/1742-6596/2005/1/012216
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2166409-2
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  • 2
    Online Resource
    Online Resource
    Research on Operation Management Technology of Cable Joints of Ring Network Cabinet Based on Temperature Sensors
    IOP Publishing ; 2022
    In:  Journal of Physics: Conference Series Vol. 2237, No. 1 ( 2022-03-01), p. 012012-
    Details
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 2237, No. 1 ( 2022-03-01), p. 012012-
    Abstract: In this paper, aiming at the operation and maintenance of the internal cable joints of the ring main unit, the research on the operation and management technology of the ring main unit cable joints based on temperature sensors is carried out. Starting from the principle of temperature sensing technology for cable joints, an online temperature monitoring system for the cable joints of the ring network cabinet is developed during the operating cycle. Comprehensive consideration of factors such as seasons, ambient temperature and humidity, line load current, etc., to evaluate the operating status of the cable joint temperature data as the main basis. A simple and adjustable bracket suitable for the fixed installation of the non-contact temperature sensor of the ring main unit has been developed. A method of managing the cable joints of the ring main unit during the operating cycle is proposed to realize the effective evaluation of the cable joint status. It can greatly improve the accuracy of condition monitoring, and improve the efficiency and level of operation and maintenance.
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    URL: Article
    DOI: 10.1088/1742-6596/2237/1/012012
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2166409-2
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  • 3
    Online Resource
    Online Resource
    Research on Monitoring System of Cable Joints of Ring Network Cabinet Based on Wireless Temperature Sensor
    IOP Publishing ; 2021
    In:  Journal of Physics: Conference Series Vol. 2005, No. 1 ( 2021-08-01), p. 012222-
    Details
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 2005, No. 1 ( 2021-08-01), p. 012222-
    Abstract: In this paper, a state monitoring system for the cable joints of the ring main unit is constructed based on the passive wireless temperature sensor. Considering the sensor packaging structure and housing material, a temperature sensor that can meet the monitoring requirements of the T-shaped insulating sheath of the cable joint is designed. Based on the thermal circuit method, the real temperature value of the internal cable joint is calculated by using the outer surface temperature of the T-shaped insulating sheath to provide more accurate data for monitoring and early warning. The background monitoring software of the monitoring system is designed to realize the temperature of the T-shaped cable joint in the ring network cabinet. Online monitoring and abnormal early warning facilitate the operation and maintenance personnel to take timely measures, which can effectively improve the operation and maintenance efficiency of the ring cabinet of the distribution network and ensure the reliability of power supply.
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    URL: Article
    DOI: 10.1088/1742-6596/2005/1/012222
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2166409-2
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  • 4
    Online Resource
    Online Resource
    Real-Time Monitoring and Quantitative Evaluation of Cavitation Bubbles Induced by High Intensity Focused Ultrasound Using B-Mode Imaging
    IOP Publishing ; 2014
    In:  Chinese Physics Letters Vol. 31, No. 3 ( 2014-03), p. 034302-
    Details
    In: Chinese Physics Letters, IOP Publishing, Vol. 31, No. 3 ( 2014-03), p. 034302-
    Type of Medium: Online Resource
    ISSN: 0256-307X , 1741-3540
    URL: Article
    DOI: 10.1088/0256-307X/31/3/034302
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2014
    detail.hit.zdb_id: 2040565-0
    SSG: 6,25
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  • 5
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    Online Resource
    Summary of the 3rd International Workshop on Gas-Dynamic Trap based Fusion Neutron Source (GDT-FNS)
    IOP Publishing ; 2022
    In:  Nuclear Fusion Vol. 62, No. 6 ( 2022-06-01), p. 067001-
    Details
    In: Nuclear Fusion, IOP Publishing, Vol. 62, No. 6 ( 2022-06-01), p. 067001-
    Abstract: The 3rd International Workshop on Gas-Dynamic Trap-based Fusion Neutron Source (GDT-FNS) was held through the hybrid mode on 13–14 September 2021 in Hefei, China, jointly organized by the Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Sciences (CAS), and the Budker Institute of Nuclear Physics (BINP), Russian Academy of Sciences (RAS). It followed the 1st GDT-FNS Workshop held in November 2018 in Hefei, China, and the 2nd taking place in November 2019 in Novosibirsk, Russian Federation. With the financial support from CAS and China Association for Science and Technology (CAST), this workshop was attended by more than 80 participants representing 20 institutes and universities from seven countries, with oral presentations broadcast via the Zoom conferencing system. Twenty-two presentations were made with topics covering design and key technologies, simulation and experiments, steady-state operation, status of the ALIANCE project, multi applications of neutron sources, and other concepts (Tokamaks, Mirrors, FRC, Plasma Focus, etc). The workshop consensus was made including the establishment of the ALIANCE International Working Group. The next GDT-FNS workshop is planned to be held in May 2022 in Novosibirsk.
    Type of Medium: Online Resource
    ISSN: 0029-5515 , 1741-4326
    URL: Article
    DOI: 10.1088/1741-4326/ac4c72
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2037980-8
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  • 6
    Online Resource
    Online Resource
    A resonant high-pressure sensor based on dual cavities
    IOP Publishing ; 2021
    In:  Journal of Micromechanics and Microengineering Vol. 31, No. 12 ( 2021-12-01), p. 124002-
    Details
    In: Journal of Micromechanics and Microengineering, IOP Publishing, Vol. 31, No. 12 ( 2021-12-01), p. 124002-
    Abstract: High-pressure sensors enable expansive demands in ocean sciences, industrial controls, and oil explorations. Successful sensor realized in piezoresistive high-pressure sensors which suffer from the key issue of compromised accuracies due to serious temperature drifts. Herein, this paper presents a high accuracy resonant high-pressure sensor with the pressure range of 70 MPa. Different from conventional resonant high-pressure sensor, the developed sensor utilized a dual-resonator-cavity design to minimize temperature disturbances and improve the pressure sensitivities. Besides, four circle cavities were used to maintain a high vacuum level for resonators after anodic bonding process. In details, Dual resonators, which is parallelly placed in the tensile and compressive stresses areas of a rectangular pressure sensitive diaphragm, are separated vacuum-packaged in the parallel dual cavities. Thus, pressure under measurement bends the pressure sensitive diaphragm, producing an increased pressure sensitivity and a decreased temperature sensitivity by the differential outputs of the dual resonators. Parameterized mathematical models of the sensor were established and the parameters of the models were optimized to adjust the pressure sensitivities and the temperature sensitivities of the sensor. Simplified deep reactive ion etching was used to form the sensing structure of the sensor and only once anodic bonding was used to form vacuum packaging for the dual resonators. Experimental results confirmed that the Q values of the resonators were higher than 32 000. Besides, the temperature sensitivity of the sensor was reduced from 44 Hz °C −1 (494 ppm °C −1 ) to 1 Hz °C −1 (11 ppm °C −1 ) by the differential outputs of the dual resonators in the temperature range of −10 °C–60 °C under the pressure of 1000 kPa. In addition, the accuracy of the sensor was better than 0.02% FS within the pressure range of 110–6500 kPa and the temperature range of −10 °C–60 °C by using a polynomial algorithm.
    Type of Medium: Online Resource
    ISSN: 0960-1317 , 1361-6439
    URL: Article
    DOI: 10.1088/1361-6439/ac333d
    RVK:
    ZG 1100
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 1480280-6
    detail.hit.zdb_id: 1069644-1
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  • 7
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    Online Resource
    Flexible and highly stable solar-blind photodetector based on room-temperature synthesis of amorphous Ga 2 O 3 film
    IOP Publishing ; 2020
    In:  Journal of Physics D: Applied Physics Vol. 53, No. 48 ( 2020-11-25), p. 484004-
    Details
    In: Journal of Physics D: Applied Physics, IOP Publishing, Vol. 53, No. 48 ( 2020-11-25), p. 484004-
    Abstract: Flexible photodetectors (PDs) have received enormous interest owing to their potential applications in portable information technology and modern wearable optoelectronic devices. Herein, flexible solar-blind PDs based on amorphous Ga 2 O 3 films fabricated on polyethylene naphthalate substrates at room temperature are demonstrated. The PD yields a responsivity up to 3.7 mA W −1 , a fast response speed of 80 ms, a large detectivity of 1.14 × 10 12 Jones, a high ultraviolet/visible rejection ratio of 6.1 × 10 3 , and an ultra-high photo-to-dark current ratio over 10 5 at 10 V, which is comparable to the performance of a device on a rigid substrate. Moreover, the device exhibits no obvious performance degradation even after mechanical bending over 10 3 cycles, indicating an excellent stability. Our results pave the route for the realization of high-performance solar-blind optoelectronics with a flexible substrate.
    Type of Medium: Online Resource
    ISSN: 0022-3727 , 1361-6463
    URL: Article
    DOI: 10.1088/1361-6463/abad64
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 209221-9
    detail.hit.zdb_id: 1472948-9
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  • 8
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    Online Resource
    A novel hybrid generative adversarial network for CT and MRI super-resolution reconstruction
    IOP Publishing ; 2023
    In:  Physics in Medicine & Biology Vol. 68, No. 13 ( 2023-07-07), p. 135007-
    Details
    In: Physics in Medicine & Biology, IOP Publishing, Vol. 68, No. 13 ( 2023-07-07), p. 135007-
    Abstract: Objective . Computed tomography (CT) and magnetic resonance imaging (MRI) are widely used in medical imaging modalities, and provide valuable information for clinical diagnosis and treatment. However, due to hardware limitations and radiation safety concerns, the acquired images are often limited in resolution. Super-resolution reconstruction (SR) techniques have been developed to enhance the resolution of CT and MRI slices, which can potentially improve diagnostic accuracy. To capture more useful feature information and reconstruct higher quality super-resolution images, we proposed a novel hybrid framework SR model based on generative adversarial networks. Approach . The proposed SR model combines frequency domain and perceptual loss functions, which can work in both frequency domain and image domain (spatial domain). The proposed SR model consists of 4 parts: (i) the discrete Fourier transform (DFT) operation transforms the image from the image domain to frequency domain; (ii) a complex residual U-net performs SR in the frequency domain; (iii) the inverse discrete Fourier transform (iDFT) operation based on data fusion transforms the image from the frequency domain to image domain; (iv) an enhanced residual U-net network is used for SR of image domain. Main results . Experimental results on bladder MRI slices, abdomen CT slices, and brain MRI slices show that the proposed SR model outperforms state-of-the-art SR methods in terms of visual quality and objective quality metric such as the structural similarity (SSIM) and the peak signal-to-noise ratio (PSNR), which proves that the proposed model has better generalization and robustness. (Bladder dataset: upscaling factor of 2: SSIM = 0.913, PSNR = 31.203; upscaling factor of 4: SSIM = 0.821, PSNR = 28.604. Abdomen dataset: upscaling factor of 2: SSIM = 0.929, PSNR = 32.594; upscaling factor of 4: SSIM = 0.834, PSNR = 27.050. Brain dataset: SSIM = 0.861, PSNR = 26.945). Significance . Our proposed SR model is capable of SR for CT and MRI slices. The SR results provide a reliable and effective foundation for clinical diagnosis and treatment.
    Type of Medium: Online Resource
    ISSN: 0031-9155 , 1361-6560
    URL: Article
    DOI: 10.1088/1361-6560/acdc7e
    RVK:
    WA 15000
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2023
    detail.hit.zdb_id: 1473501-5
    SSG: 12
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  • 9
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    Online Resource
    Scaling dependence of memory windows and different carrier charging behaviors in Si nanocrystal nonvolatile memory devices*
    IOP Publishing ; 2016
    In:  Chinese Physics B Vol. 25, No. 9 ( 2016-09-01), p. 097304-
    Details
    In: Chinese Physics B, IOP Publishing, Vol. 25, No. 9 ( 2016-09-01), p. 097304-
    Abstract: Based on the charge storage mode, it is important to investigate the scaling dependence of memory performance in silicon nanocrystal (Si-NC) nonvolatile memory (NVM) devices for its scaling down limit. In this work, we made eight kinds of test key cells with different gate widths and lengths by 0.13-μm node complementary metal oxide semiconductor (CMOS) technology. It is found that the memory windows of eight kinds of test key cells are almost the same of about 1.64 V @ ± 7 V/1 ms, which are independent of the gate area, but mainly determined by the average size (12 nm) and areal density (1.8 × 10 11 /cm 2 ) of Si-NCs. The program/erase (P/E) speed characteristics are almost independent of gate widths and lengths. However, the erase speed is faster than the program speed of test key cells, which is due to the different charging behaviors between electrons and holes during the operation processes. Furthermore, the data retention characteristic is also independent of the gate area. Our findings are useful for further scaling down of Si-NC NVM devices to improve the performance and on-chip integration.
    Type of Medium: Online Resource
    ISSN: 1674-1056
    URL: Article
    DOI: 10.1088/1674-1056/25/9/097304
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2016
    detail.hit.zdb_id: 2412147-2
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  • 10
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    Online Resource
    Effects of emulsified asphalt on the mechanical and tribological properties of copper/graphite composites
    IOP Publishing ; 2019
    In:  Materials Research Express Vol. 6, No. 5 ( 2019-02-06), p. 056515-
    Details
    In: Materials Research Express, IOP Publishing, Vol. 6, No. 5 ( 2019-02-06), p. 056515-
    Type of Medium: Online Resource
    ISSN: 2053-1591
    URL: Article
    DOI: 10.1088/2053-1591/aafeb7
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 2760382-9
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