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< Page ,Total 39 >
Comparison of the anticancer effects between helium plasma jets and electrochemical treatment (EChT) EI SCIE
期刊论文 | 2021 , 18 (11) | PLASMA PROCESSES AND POLYMERS
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Abstract :

Cold atmospheric plasma, a promising technology for cancer therapy, can simultaneously induce electrochemistry, which has been widely demonstrated to be effective against cancer. Herein, the anticancer effects of direct current plasma jets and electrochemical circuit are comparatively studied with similar topological structures and average currents. The cell inactivation patterns formed by plasma and electrochemical treatment (EChT) are disparate, and the inactivation is mainly caused by the emission of charged species, helium flow, in situ OH radical production, or local alkalization. The culture medium treated by EChT exerted no sustained anticancer effect, whereas the medium treated by plasma could maintain a strong effect due to the production of more reactive species, suggesting that the electrochemistry does not dominate the plasma inactivation of cancer cells.

Keyword :

cancer therapy electrochemistry reactive species plasma jet

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GB/T 7714 Liu, Dingxin , Wang, Zifeng , Chen, Zeyu et al. Comparison of the anticancer effects between helium plasma jets and electrochemical treatment (EChT) [J]. | PLASMA PROCESSES AND POLYMERS , 2021 , 18 (11) .
MLA Liu, Dingxin et al. "Comparison of the anticancer effects between helium plasma jets and electrochemical treatment (EChT)" . | PLASMA PROCESSES AND POLYMERS 18 . 11 (2021) .
APA Liu, Dingxin , Wang, Zifeng , Chen, Zeyu , Xu, Dehui , Chen, Min , Chen, Jinkun et al. Comparison of the anticancer effects between helium plasma jets and electrochemical treatment (EChT) . | PLASMA PROCESSES AND POLYMERS , 2021 , 18 (11) .
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A Study to Resist Conduced Interference from GIS Bus-Charging Currents Switching for Electronic Current Transformer SCIE
期刊论文 | 2021 , 10 (8) | ELECTRONICS
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Abstract :

In this paper, we study the conducted interference to an electronic current transformer introduced in the process of bus-charging currents which are caused by switching a gas insulated switchgear (GIS) disconnector. To cope with these issues, the EMTP-ATP and Matlab/Simulink software are used to carry out equivalent modeling simulations and experimental research, respectively. More specifically, the very fast transient current generated by disconnector switching (DS) is used as the input source of the equivalent simulation model of the Rogowski coil, and the characteristics of conducted interference waveforms of the Rogowski coil, the active integrator and filter outputs under single and multiple breakdowns are analyzed step by step. Moreover, several anti-interference methods are proposed to improve the resistance to the high-voltage and high-frequency conducted interference for the Rogowski coil, such as reducing the Rogowski cut-off frequency, increasing the transient voltage suppressor (TVS), active filter, and Cy capacitor. Besides, the study also reveals that the residual charge of the integral capacitor will discharge with a time constant tau = 1 s after arc quenching with the first-order discharge circuit, which is composed of the feedback resistance and the integral capacitor C. Lastly, the experimental results demonstrate the correctness of the modeling method proposed in this paper and the effectiveness of anti-interference measures.

Keyword :

gas-insulated switchgear (GIS) Rogowski coil electronic current transformer (ECT) very fast transient current (VFTC) active integrator

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GB/T 7714 Bai, Shijun , Yue, Fanding , Zeng, Lincui et al. A Study to Resist Conduced Interference from GIS Bus-Charging Currents Switching for Electronic Current Transformer [J]. | ELECTRONICS , 2021 , 10 (8) .
MLA Bai, Shijun et al. "A Study to Resist Conduced Interference from GIS Bus-Charging Currents Switching for Electronic Current Transformer" . | ELECTRONICS 10 . 8 (2021) .
APA Bai, Shijun , Yue, Fanding , Zeng, Lincui , Li, Yi , Wang, Chuanchuan , Wang, Xiaohua et al. A Study to Resist Conduced Interference from GIS Bus-Charging Currents Switching for Electronic Current Transformer . | ELECTRONICS , 2021 , 10 (8) .
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A Bayesian Deep Learning RUL Framework Integrating Epistemic and Aleatoric Uncertainties EI SCIE
期刊论文 | 2021 , 68 (9) , 8829-8841 | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
WoS CC Cited Count: 6
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Abstract :

Recent years have witnessed the prominent advancements of deep learning (DL) in the arsenal of prognostics and health management. However, the prognostic uncertainty problem extensively existed in industrial devices is not addressed by most DL approaches. This article formulates a novel Bayesian Deep Learning (BDL) framework to characterize the prognostic uncertainties. A distinguished advantage of the framework is its capacity of capturing the comprehensive effects of two critical uncertainties: 1) epistemic uncertainty, accounting for the uncertainty in the model, and 2) aleatoric uncertainty, representing the impact of random disturbance, such as measurement errors. The former arises from the variability of the model weights, and the latter is characterized by selected lifetime distributions. We integrate both uncertainties by defining BDL as priors of lifetime parameters. A sequential Bayesian boosting algorithm is executed to improve the estimation accuracy and compress the credible intervals. The superior prediction performance of our framework is validated by a real-world dataset collected from hydraulic mechanisms of circuit breakers.

Keyword :

Prediction algorithms Uncertainty Aleatoric uncertainty Bayesian neural network Prognostics and health management Bayes methods remaining useful life Modeling Machine learning epistemic uncertainty Probabilistic logic

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GB/T 7714 Li, Gaoyang , Yang, Li , Lee, Chi-Guhn et al. A Bayesian Deep Learning RUL Framework Integrating Epistemic and Aleatoric Uncertainties [J]. | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2021 , 68 (9) : 8829-8841 .
MLA Li, Gaoyang et al. "A Bayesian Deep Learning RUL Framework Integrating Epistemic and Aleatoric Uncertainties" . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 68 . 9 (2021) : 8829-8841 .
APA Li, Gaoyang , Yang, Li , Lee, Chi-Guhn , Wang, Xiaohua , Rong, Mingzhe . A Bayesian Deep Learning RUL Framework Integrating Epistemic and Aleatoric Uncertainties . | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS , 2021 , 68 (9) , 8829-8841 .
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Antimonene: A Promising Candidate for SF6 Decomposition Gas Sensors With High Sensitivity and High Stability EI SCIE
期刊论文 | 2020 , 41 (9) , 1408-1411 | IEEE ELECTRON DEVICE LETTERS | IF: 4.187
WoS CC Cited Count: 4
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Abstract :

The sensing performance of antimonene towards SF6 decomposition gases was investigated by first principles calculations in this paper. By analyzing the adsorption energy, charge transfer, work function variation, and density of states (DOS), we concluded that antimonene is sensitive and selective to the SF6 decomposition gas product SO2. Unlike previous studies, the effect of Stone-Wales (SW) defects and biaxial strain on the sensing performance of antimonene was also explored, indicating that SW defects can expand the range of available antimonene sensor structures and that antimonene is highly stable to biaxial strain. As stability is one of the main challenges that hinders the practical application of sensing materials, we concluded that anitmonene would be a promising candidate for the development of SF6 decomposition gas sensors with high sensitivity and stability that could replace other sensitive but unstable two dimensional materials such as phosphorene.

Keyword :

Stone-Wales defect SF6 decompositions Adsorption Sulfur hexafluoride Antimonene Gas detectors Strain Charge transfer first-principles calculations Substrates gas sensor

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GB/T 7714 Wang, Xiao-Hua , Wang, Da-Wei , Liu, Zhu et al. Antimonene: A Promising Candidate for SF6 Decomposition Gas Sensors With High Sensitivity and High Stability [J]. | IEEE ELECTRON DEVICE LETTERS , 2020 , 41 (9) : 1408-1411 .
MLA Wang, Xiao-Hua et al. "Antimonene: A Promising Candidate for SF6 Decomposition Gas Sensors With High Sensitivity and High Stability" . | IEEE ELECTRON DEVICE LETTERS 41 . 9 (2020) : 1408-1411 .
APA Wang, Xiao-Hua , Wang, Da-Wei , Liu, Zhu , Lan, Tian-Song , Yang, Ai-Jun , Pan, Jian-Bin et al. Antimonene: A Promising Candidate for SF6 Decomposition Gas Sensors With High Sensitivity and High Stability . | IEEE ELECTRON DEVICE LETTERS , 2020 , 41 (9) , 1408-1411 .
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A deep learning method to detect foreign objects for inspecting power transmission lines EI SCIE Scopus
期刊论文 | 2020 , 8 , 94065-94075 | IEEE Access | IF: 3.367
WoS CC Cited Count: 3 SCOPUS Cited Count: 2
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Abstract :

Image online monitoring technology has been widely used in transmission lines inspection, but the intelligent and efficient foreign object detection still has a gap with the ideal. In this paper, we propose a deep learning method to detect invading foreign objects for power transmission line inspection. Specifically, we design our network based on the regression strategy with oriented bounding boxes to accurately predict spatial location and orientation angle of foreign objects, as well as their categories in cluttered backgrounds. Moreover, an easy yet effective Scale Histogram Matching method is proposed to be applied to the publicly available dataset, allowing useful patterns to be exploited to detect tiny foreign objects during the pretraining procedure and boosting detection performance even with limited annotated samples. Besides, we construct an image dataset that contains common foreign objects in transmission line scenarios to evaluate proposed methods, on which experiment results show our full model achieves accuracy with 88.1% mean Average Precision (mAP). Additionally, the efficient and compact network structure allows our network to run in real-time, which provides possibilities for practical use. © 2013 IEEE.

Keyword :

Electric lines Power transmission Object detection Learning systems Inspection Deep learning

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GB/T 7714 Zhu, Jinguo , Guo, Yue , Yue, Fanding et al. A deep learning method to detect foreign objects for inspecting power transmission lines [J]. | IEEE Access , 2020 , 8 : 94065-94075 .
MLA Zhu, Jinguo et al. "A deep learning method to detect foreign objects for inspecting power transmission lines" . | IEEE Access 8 (2020) : 94065-94075 .
APA Zhu, Jinguo , Guo, Yue , Yue, Fanding , Yuan, Huan , Yang, Aijun , Wang, Xiaohua et al. A deep learning method to detect foreign objects for inspecting power transmission lines . | IEEE Access , 2020 , 8 , 94065-94075 .
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Tellurene Nanoflake-Based Gas Sensors for the Detection of Decomposition Products of SF6 EI SCIE
期刊论文 | 2020 , 3 (8) , 7587-7594 | ACS APPLIED NANO MATERIALS | IF: 5.097
WoS CC Cited Count: 4
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Abstract :

Tellurene has a phosphorene-like puckered configuration and exhibits great air stability. This characteristic makes it highly sensitive to some gases, and therefore, it has a huge potential in gas sensing applications. In this paper, the sensing performance of tellurene-based gas sensors toward SF6 decomposition products, including H2S, SO2, SO2F2, and SOF2, was systematically investigated. Three types of tellurene-based gas sensors were fabricated: single tellurene flake with ohmic contact (RCTF sensor), single tellurene flake with nonohmic contact (DCTF sensor), and drop-cast tellurene flakes with heat function (HTF sensor). The RCTF sensor exhibited good sensitivity and selectivity toward hydrogen sulfide but slow recovery speed like most two-dimensional materials. The DCTF sensor exhibited a significant improvement in sensitivity, selectivity, and recovery speed compared with the RCTF sensor. Finally, the HTF sensor demonstrated the fastest recovery speed of all tellurene-based sensors. This work showed that the nonohmic contact and heat pulse are easy and efficient methods to enhance the performance of tellurene-based gas sensors toward hydrogen sulfide, which supports the application potential of tellurene in gas sensors.

Keyword :

SF6 decomposition products P-type contact tellurene gas sensor heat pulse

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GB/T 7714 Wang, Dawei , Pan, Jianbin , Lan, Tiansong et al. Tellurene Nanoflake-Based Gas Sensors for the Detection of Decomposition Products of SF6 [J]. | ACS APPLIED NANO MATERIALS , 2020 , 3 (8) : 7587-7594 .
MLA Wang, Dawei et al. "Tellurene Nanoflake-Based Gas Sensors for the Detection of Decomposition Products of SF6" . | ACS APPLIED NANO MATERIALS 3 . 8 (2020) : 7587-7594 .
APA Wang, Dawei , Pan, Jianbin , Lan, Tiansong , Chu, Jifeng , Fan, Chengyu , Yuan, Huan et al. Tellurene Nanoflake-Based Gas Sensors for the Detection of Decomposition Products of SF6 . | ACS APPLIED NANO MATERIALS , 2020 , 3 (8) , 7587-7594 .
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An Investigation of Snubber and Protection Circuits Connections for Power-Electronic Switch in Hybrid DC Circuit Breaker CPCI-S
会议论文 | 2019 , 43-46 | IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)
WoS CC Cited Count: 2
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Abstract :

Hybrid DC circuit breaker (HDCCB) which relies on power electronic switches (PE switch) to achieve current breaking is a suitable candidate for DC power system fault current removal. Power electronic switch, as the key component, must provide the capability of high surge current, high turn-off current and enough overvoltage establishment. Thus, suitable snubber and protection circuits are indispensable for PE switch in DC current breaking. However, the connection types of these circuits are various and it is hard to determine the characteristics and benefits of each type. This paper investigates the different connection types of snubber and protection circuits for PE switch in hybrid DC circuit breakers. First, the topologies, working principles and current paths of three types of circuit connections are introduced and analyzed. Next, the corresponding overvoltage suppression performance are analyzed and tested comparatively. Test results show that the nearest position to MOV is the most beneficial to overvoltage suppression. Then, the phenomenon of voltage oscillation across the PE switch is analyzed. We can conclude that equivalent junction capacitors are the causes for voltage oscillation. Finally, the selection preference of connection types of snubber and protection circuits for PE switch in HDCCB for practical use is given.

Keyword :

PE switch DC circuitbreaker snubber circuit

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GB/T 7714 Yi, Qiang , Wu, Yifei , Yang, Fei et al. An Investigation of Snubber and Protection Circuits Connections for Power-Electronic Switch in Hybrid DC Circuit Breaker [C] . 2019 : 43-46 .
MLA Yi, Qiang et al. "An Investigation of Snubber and Protection Circuits Connections for Power-Electronic Switch in Hybrid DC Circuit Breaker" . (2019) : 43-46 .
APA Yi, Qiang , Wu, Yifei , Yang, Fei , Wu, Yi , Rong, Mingzhe , Wen, Jian et al. An Investigation of Snubber and Protection Circuits Connections for Power-Electronic Switch in Hybrid DC Circuit Breaker . (2019) : 43-46 .
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Quantitative Detection of Mixed Gases by Sensor Array Using C-Means Clustering and Artificial Neural Network CPCI-S
会议论文 | 2019 , 6748-6751 | 45th Annual Conference of the IEEE Industrial Electronics Society (IECON)
WoS CC Cited Count: 1
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Abstract :

Due to the cross-sensitivity to kinds of gases, traditional single sensor is impossible to selectively detect gases, which limits its application. In this paper, a sensor array with supervised and unsupervised algorithms was employed to selectively detect NO2, CO and their mixtures. To improve the recognition accuracy, average resistance over a period of time was introduced to acquire features, including response value, response time and recovery time. Firstly, principal component analysis (PCA) was utilized to reduce the dimensionality of samples. With the help of unsupervised fuzzy C-means clustering algorithm, samples have exhibited obvious clustering. Furthermore, artificial neural network (ANN) has reached a high accuracy of quantitative identification on six different detected gases varying from 0 to 50ppm.

Keyword :

sensor array principal component analysis artificial neural network C-means gas mixtures

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GB/T 7714 Chu, Jifeng , Li, Weijuan , Yang, Xu et al. Quantitative Detection of Mixed Gases by Sensor Array Using C-Means Clustering and Artificial Neural Network [C] . 2019 : 6748-6751 .
MLA Chu, Jifeng et al. "Quantitative Detection of Mixed Gases by Sensor Array Using C-Means Clustering and Artificial Neural Network" . (2019) : 6748-6751 .
APA Chu, Jifeng , Li, Weijuan , Yang, Xu , Yu, Heng , Wang, Dawei , Fan, Chengyu et al. Quantitative Detection of Mixed Gases by Sensor Array Using C-Means Clustering and Artificial Neural Network . (2019) : 6748-6751 .
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A Novel Topology of a Liquid Metal Current Limiter for MVDC Network Applications EI SCIE Scopus
期刊论文 | 2019 , 34 (2) , 661-670 | IEEE TRANSACTIONS ON POWER DELIVERY | IF: 3.681
WoS CC Cited Count: 5 SCOPUS Cited Count: 7
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Abstract :

A liquid metal current limiter (LMCL) utilizing a fast switch and a parallel connecting path and consisting of several serial current limiting elements (CLEs) has the potential for use in a dc system. The current commutation ability is vital to the reaction time and the current limiting efficiency of this LMCL. In this paper, the characteristics of a natural current commutation driven by the arc voltage between contacts are first revealed; this method can only be applied in a low-voltage system. To fulfill the demands of a medium-voltage direct current system, an innovative LMCL topology is recommended due to the forced current commutation driven by an auxiliary magnetic induction module. A specially designed structure of magnetic coupling coils with a high coupling coefficient is proposed to improve the current commutation ability. The forced current commutation characteristic is analyzed via simulation and verified experimentally. Furthermore, the arc V-I characteristics of CLEs are deeply discussed to guide the selection of serial quantity of the CLE. Finally, a prototype for the complete LMCL is designed, assembled, and tested in the laboratory. The current limiting coefficient of the LMCL is less than 0.464, the peak value of arc voltage is approximately 6.3 kV, and the current limiting reaction time is 1.53 ms.

Keyword :

Fault current limiters (FCLs) GaInSn liquid metal current commutation medium-voltage direct current (MVDC)

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GB/T 7714 Yang, Zhuo , He, Hailong , Yang, Fei et al. A Novel Topology of a Liquid Metal Current Limiter for MVDC Network Applications [J]. | IEEE TRANSACTIONS ON POWER DELIVERY , 2019 , 34 (2) : 661-670 .
MLA Yang, Zhuo et al. "A Novel Topology of a Liquid Metal Current Limiter for MVDC Network Applications" . | IEEE TRANSACTIONS ON POWER DELIVERY 34 . 2 (2019) : 661-670 .
APA Yang, Zhuo , He, Hailong , Yang, Fei , Wu, Yi , Rong, Mingzhe , Zhao, Peng et al. A Novel Topology of a Liquid Metal Current Limiter for MVDC Network Applications . | IEEE TRANSACTIONS ON POWER DELIVERY , 2019 , 34 (2) , 661-670 .
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Investigation on the RONS and bactericidal effects induced by He + O2 cold plasma jets: In open air and in an airtight chamber EI Scopus SCIE
期刊论文 | 2018 , 25 (11) | Physics of Plasmas | IF: 1.913
WoS CC Cited Count: 6 SCOPUS Cited Count: 8
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Abstract :

© 2018 Author(s). He + O2 plasma jets in open air and in an airtight chamber are comparatively studied, with respect to their production of gaseous/aqueous reactive species and their antibacterial effects. Under the same discharge power, the plasma jet in open air has higher densities of gaseous reactive species and a higher concentration of aqueous H2O2 but lower concentrations of aqueous OH and O2 -. In addition, the increase in the O2 ratio in He in both plasma jets causes a linear decrease in the population of gaseous reactive species, except for O(3p5P) when a small amount of O2 is added to the working gas. The concentrations of aqueous reactive species for OH and H2O2 also drop monotonically with the increase in additive O2, while the aqueous O2 - first increases and then decreases. Moreover, it is interesting that the bactericidal inactivation in the airtight chamber condition is much greater than that in the open air condition regardless of the presence or absence of additive O2 in the He plasma jet. The concentration trends of O2 - for both the plasma jets are similar to their antibacterial effects, and little antibacterial effect is achieved when a scavenger of O2 - is used, indicating that O2 - should be a main antibacterial agent. Moreover, it should not be O2 - alone to achieve the antibacterial effect, and some reactive nitrogen species such as ONOO- and O2NOO- might also play an important role.

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GB/T 7714 Xu, Han , Liu, Dingxin , Wang, Weitao et al. Investigation on the RONS and bactericidal effects induced by He + O2 cold plasma jets: In open air and in an airtight chamber [J]. | Physics of Plasmas , 2018 , 25 (11) .
MLA Xu, Han et al. "Investigation on the RONS and bactericidal effects induced by He + O2 cold plasma jets: In open air and in an airtight chamber" . | Physics of Plasmas 25 . 11 (2018) .
APA Xu, Han , Liu, Dingxin , Wang, Weitao , Liu, Zhijie , Guo, Li , Rong, Mingzhe et al. Investigation on the RONS and bactericidal effects induced by He + O2 cold plasma jets: In open air and in an airtight chamber . | Physics of Plasmas , 2018 , 25 (11) .
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