3篇
您的检索式：作者名="Sun Fengkai"
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| 1 | Two-Stage Transformerless Dual-Buck PV Grid-Connected Inverters with High Efficiency显示文摘A semi-two-stage common-ground-type transformerless dual-buck-based grid-connected inverter is proposed in this paper.The common-ground-type topology can eliminate common mode(CM)leakage current by connecting the negative terminal of the photovoltaic(PV)directly to the neutral point of the grid,which bypasses the PV array’s stray capacitance.The dual-buck-based topology guarantees increased robustness since the dc-link cannot be short-circuited by a shoot-through event.The semi-two-stage topology features multi-level characteristic,which has a lower forward-voltage drop and smaller dv/dt.Compared with the conventional two-stage inverter,the proposed topology achieves higher efficiency and higher reliability.Experimental results of a 1.5kW prototype show that the proposed inverter is able to achieve high efficiency and low leakage currents. | Li Zhang Fengkai Jiang Dewei(David)Xu Kai Sun Yongqiang Hao Tao Zhang | 2018 | Chinese Journal of Electrical Engineering2018，4，2： | 4 |
| 2 | Yiguanjian cataplasm attenuates opioid dependence in a mouse model of naloxone-induced opioid withdrawal syndrome显示文摘OBJECTIVE:To investigate the effect of Yiguanjian(YGJ) cataplasm on the development of opioid dependence in a mouse model of naloxone-induced opioid withdrawal syndrome.METHODS:One hundred Swiss albino mice,of equal male to female ratio,were randomly and equally divided into 10 groups.A portion(3 cm2) of the backside hair of the mice was removed 1 day prior to the experiment.Morphine(5 mg/kg) was intraperitoneally administered twice daily for 5days.YGJ cataplasm was prepared and pasted on the bare region of the mice immediately beforemorphine administration on day 3 and subsequently removed at the end day 5.On day 6,naloxone(8mg/kg) was intraperitoneally injected to precipitate opioid withdrawal syndrome.Behavioral observation was performed in two 30-min phases immediately after naloxone injection.RESULTS:The YGJ cataplasm significantly and dose-dependently attenuated morphine-naloxone-induced experimental opioid withdrawal,in terms of withdrawal severity score and the frequencies of jumping,rearing,forepaw licking,and circling behaviors.However,YGJ cataplasm treatment did not alter the acute analgesic effect of morphine.CONCLUSION:YGJ cataplasm could attenuate opioid dependence and its associated withdrawal symptoms.Therefore,YGJ cataplasm could serve as a potential therapy for opioid addiction in the future. | Gao Shuai Gao Hong Fan Yuchen Zhang Guanghua Sun Fengkai Zhao Jing Li Feng Yang Yang Wang Kai | 2016 | Journal of Traditional Chinese Medicine2016，36，4： | 1 |
| 3 | Enhanced activation of persulfate using mesoporous silica spheres augmented Cu–Al bimetallic oxide particles for bisphenol A degradation显示文摘Herein,Cu–Al bimetallic oxide was synthesized and mixed with mesoporous silica spheres via a simple hydrothermal method.The prepared sample was then analyzed and employed to activate potassium peroxydisulfate for bisphenol A removal.Based on the results of X-ray diffraction,scanning electron microscopy,and energy dispersion spectroscopy,Cu–Al bimetallic oxide was determined as CuO-Al2O3,and mesoporous silica spheres were found around the these particles.At 30 min,a bisphenol A degradation level of 90%was achieved,and it remained at over 60%after five consecutive cycles,indicating the catalyst’s superior capacity and stability.In terms of removal performance,the radical pathway(including■OH•,and■)and singlet oxygen(■)bisphenol A,potassium peroxydisulfate,and the catalyst played a dominant role.The introduction of Al2O3 promoted the formation of surface oxygen vacancies,which improved ligand complex formation between potassium peroxydisulfate and the catalyst,thereby facilitating electron migration.Furthermore,mesoporous silica spheres augment not only enhanced bisphenol A adsorption but also alleviated Cu leaching.Overall,this work is expected to provide significant support for the rational development of catalysts with high catalytic activity for persulfate activation via surface electron migration. | Fulong Wang Liang Sun Ziyu Zhang Fengkai Yang Jinlong Yang Weijian Liu | 2023 | Frontiers of Chemical Science and Engineering2023，17，10： | 0 |
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