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Long radial coherence of electron temperature fluctuations in non-local transport in HL-2A plasmas
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作者 石中兵 方凯锐 +14 位作者 李景春 邹晓岚 卢兆旸 闻杰 王占辉 丁玄同 陈伟 杨曾辰 蒋敏 季小全 佟瑞海 李永高 施陪万 钟武律 许敏 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第2期413-420,共8页
The dynamics of long-wavelength(kθ<1.4 cm^(-1)),broadband(20 kHz–200 kHz)electron temperature fluctuations(Te/Te)of plasmas in gas-puff experiments are observed for the first time in HL-2A tokamak.In a relatively... The dynamics of long-wavelength(kθ<1.4 cm^(-1)),broadband(20 kHz–200 kHz)electron temperature fluctuations(Te/Te)of plasmas in gas-puff experiments are observed for the first time in HL-2A tokamak.In a relatively low density(ne(0)■0.91×10^(19)m^(-3)–1.20×10^(19)m^(-3))scenario,after gas-puffing the core temperature increases and the edge temperature drops.On the contrary,temperature fluctuation drops at the core and increases at the edge.Analyses show the non-local emergence is accompanied with a long radial coherent length of turbulent fluctuations.While in a higher density(ne(0)?1.83×10^(19)m^(-3)–2.02×10^(19)m^(-3))scenario,the phenomena are not observed.Furthermore,compelling evidence indicates that E×B shear serves as a substantial contributor to this extensive radial interaction.This finding offers a direct explanatory link to the intriguing core-heating phenomenon witnessed within the realm of non-local transport. 展开更多
关键词 nuclear fusion non-local transport TOKAMAK gas-puffing
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税收优惠对新能源企业创新绩效的影响研究——以沪深A股新能源上市企业为例 被引量:4
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作者 鲁钊阳 杜雨潼 《经济学报》 2024年第1期349-370,共22页
本文利用A股新能源上市企业2009—2020年的数据,先后采用固定效应模型、双重差分模型以及中介效应模型,实证税收优惠对企业创新绩效的影响。实证结果表明:税收优惠促进了新能源企业创新绩效,对发明创新和非发明创新均有显著影响,稳健性... 本文利用A股新能源上市企业2009—2020年的数据,先后采用固定效应模型、双重差分模型以及中介效应模型,实证税收优惠对企业创新绩效的影响。实证结果表明:税收优惠促进了新能源企业创新绩效,对发明创新和非发明创新均有显著影响,稳健性检验通过评估两个具有代表性的税收优惠政策进一步验证了结论的可靠性。机制分析表明,税收优惠通过增加新能源企业的研发资金投入而非人力资本投入来提高其创新绩效。税收优惠的创新促进效应因企业的内外部特征存在差异性,其对非国有性质、电热供应行业、具备政治关联以及法制水平较高地区的企业作用更显著。 展开更多
关键词 税收优惠 新能源企业 创新绩效 双重差分模型 中介效应模型
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Liver Transplantation Reverses Hepatic Myelopathy in the Decompensated Phase of Cirrhosis:Case Report and Literature Review
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作者 Jiajun Li Sile Wan +4 位作者 Fukai Wen Qingyu Li Yifeng Cui zhaoyang lu Han Lin 《Journal of Clinical and Translational Hepatology》 SCIE 2024年第4期436-442,共7页
Hepatic myelopathy(HM)is a rare neurological complication in the end stage of many liver diseases and is characterized by bilateral spastic paraparesis without sensory and sphinc-ter dysfunction.It occurs owing to met... Hepatic myelopathy(HM)is a rare neurological complication in the end stage of many liver diseases and is characterized by bilateral spastic paraparesis without sensory and sphinc-ter dysfunction.It occurs owing to metabolic disorders and central nervous system dysfunction associated with cirrhosis.Without timely and effective clinical intervention,the progno-sis of these patients is devastating.Although liver transplan-tation(LT)is an effective treatment for HM,the prognosis of these patients remains unsatisfactory.Early recognition and diagnosis of this disease are essential for improving patient prognosis.Here,we report a case of hepatitis B virus-asso-ciated decompensated cirrhosis with HM.The patient recov-ered well after LT.We also summarize the clinical character-istics and post-transplant outcomes of 25 patients with HM treated by LT through 2023,including this case. 展开更多
关键词 Hepatic myelopathy Hepatic encephalopathy Spastic paraparesis Portosystemic shunt Liver transplantation
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