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Reversible switching of Kondo resonance in a single-molecule junction

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Nano Research 2022年第2期15卷 1466-1471页

作者： Yuqing Xing Hui Chen Bin Hu yuhan ye Werner AHofer Hong-Jun Gao Institute of Physics Chinese Academy of Sciences and University of Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China

The control of the Kondo effect is of great interest in single-molecule junction due to its potential applications in spin based ***,we demonstrate that the Kondo effect is reversibly switched on and off in an iron phthalocyanine(FePc)single-molecule junction by using a superconducting Nb *** a scanning tunneling microscope-based Nb-insulator-FePc-Au junction,we achieve a reversible switching between the Kondo dip and inelastic electronic tunneling spectra by simply adjusting the tip-sample distance to tune the tunnel coupling at low *** approaching the tip leads to the picking up of the molecule to the tip apex,which transfers the geometry of the single-molecule junction into a Nb-FePc-insulator-Au *** the molecule forms an effective magnetic impurity embedded into the superconducting ground states of the Nb tip,the out-gap Kondo dip switched to an in-gap Yu-Shiba-Rusinov *** results open up a new route for manipulating the Kondo effect within a single-molecule junction.

关键词： iron phthalocyanine(FePc) scanning tunneling microscope superconducting tip Kondo resonance inelastic electron tunneling Yu-Shiba-Rusinov states

低温热解磷酸改性花生壳生物炭的制备及对水中Cr(Ⅵ)的去除

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中北大学学报（自然科学版） 2024年第4期45卷 503-512页

作者：赵啟超白红娟韩群英孙竹梅刘鹏霄王子豪叶宇晗王瑶中北大学环境与安全工程学院山西太原030051

以花生壳为原料,利用H_(3)PO_(4)为活化剂,低温热解制备了改性生物炭,并对其去除水中Cr(Ⅵ)的效果及机理进行了探究。研究了溶液p H、生物炭投加量、反应时间及初始质量浓度对去除效果的影响,借助SEM、BET、 XPS、 FTIR表征了其结构和组... 详细信息

以花生壳为原料,利用H_(3)PO_(4)为活化剂,低温热解制备了改性生物炭,并对其去除水中Cr(Ⅵ)的效果及机理进行了探究。研究了溶液p H、生物炭投加量、反应时间及初始质量浓度对去除效果的影响,借助SEM、BET、 XPS、 FTIR表征了其结构和组成,并探讨了去除机理。结果表明,低温热解与高温热解制备的改性生物炭对Cr(Ⅵ)的去除效果无显著性差异,且低温热解节能环保。低温热解磷酸改性生物炭(PBC350)去除Cr(Ⅵ)的最适条件为Cr(Ⅵ)的初始质量浓度为100 mg/L, 50 mL溶液中投加量为0.10 g, pH=2,反应时间8 h,在最适条件下,Cr(Ⅵ)的去除率达到99.0%,约为未改性生物炭(BC350)的1.5倍。表征结果表明,PBC350表面形成了致密的、蜂窝状的孔隙结构,比表面积为17.75 m^(2)/g,比BC350的比表面积提升了近20倍,同时,XPS和FTIR结果显示,PBC350成功掺杂了磷元素,引入大量含磷(P-O)官能团,能提供电子参与Cr(Ⅵ)还原,提高了Cr(Ⅵ)的去除率。本研究为低温热解磷酸改性生物炭在废水重金属治理中的应用提供了理论基础。

关键词：花生壳生物炭六价铬Cr(Ⅵ) 磷酸改性低温热解

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金宁方中β-谷甾醇增进槲皮素诱导肺癌A549细胞凋亡作用

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世界临床药物 2024年第3期45卷 276-284页

作者：俞杞泉叶玉涵吕春明张泽良杨扬韩素静上海中医药大学附属龙华医院胸外科上海200032 上海中医药大学科技实验中心上海201203 上海中医药大学附属龙华医院老年医学科上海200032

目的探讨β-谷甾醇联合槲皮素对A549细胞抑制作用以及机制。方法将A549细胞分为对照组、槲皮素组、槲皮素+β-谷甾醇组、雌二醇组、雌二醇+槲皮素组以及雌二醇+槲皮素+β-谷甾醇组。采用细胞存活率检测A549细胞的抑制作用。采用流式细... 详细信息

目的探讨β-谷甾醇联合槲皮素对A549细胞抑制作用以及机制。方法将A549细胞分为对照组、槲皮素组、槲皮素+β-谷甾醇组、雌二醇组、雌二醇+槲皮素组以及雌二醇+槲皮素+β-谷甾醇组。采用细胞存活率检测A549细胞的抑制作用。采用流式细胞技术和免疫荧光法检测肺癌细胞的促凋亡情况。应用免疫印迹法检测磷脂酰肌醇3-激酶(phosphoinositide 3-kinase,PI3K)/蛋白激酶B(protein kinase B,Akt)/哺乳动物雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)信号通路的调控作用。结果槲皮素可抑制A549细胞生存率且具量效关系(P<0.05);雌二醇可促进A549细胞生长;与槲皮素组或槲皮素+β-谷甾醇比较,雌二醇+槲皮素+β-谷甾醇组更抑制A549细胞增殖,提高细胞凋亡比例及caspase-3的表达水平(P<0.05);促进mTOR和Akt磷酸化,减少PI3K磷酸化。结论在雌二醇干预下,β-谷甾醇联合槲皮素对A549细胞有抑制作用,其机制可能通过PI3K/Akt/mTOR通路对细胞凋亡起促进作用。

关键词： β-谷甾醇槲皮素非小细胞肺癌A549细胞

Superconductivity and unconventional density waves in vanadium-based kagome materials AV_(3)Sb_(5)

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Chinese Physics B 2022年第9期31卷 56-75页

作者：陈辉胡彬耶郁晗杨海涛高鸿钧 Institute of Physics and University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100190China CAS Center for Excellence in Topological Quantum Computation Beijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China

Recently,the discovery of vanadium-based kagome metal AV_(3)Sb_(5)(A=K,Rb,Cs)has attracted great interest in the field of superconductivity due to the coexistence of superconductivity,non-trivial surface state and multiple density *** this topical review,we present recent works of superconductivity and unconventional density waves in vanadium-based kagome materials AV_(3)Sb_(5).We start with the unconventional charge density waves,which are thought to correlate to the time-reversal symmetry-breaking orders and the unconventional anomalous Hall effects in AV_(3)Sb_(5).Then we discuss the superconductivity and the topological band ***,we review the competition between the superconductivity and charge density waves under different conditions of pressure,chemical doping,thickness,and ***,the experimental evidence of pseudogap pair density wave is discussed.

关键词： kagome metal superconductivity charge density wave pair density wave

电极接触方式对环氧树脂表面电荷积聚与消散特性的影响

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高电压技术 2023年第1期49卷 321-330页

作者：胡伯立潘成潘子君叶宇涵唐炬武汉大学电气与自动化学院武汉430072

直流电压下绝缘子表面电荷积聚会造成电场畸变,导致气-固界面沿面放电甚至绝缘失效,因此研究表面电荷积聚与消散特性具有重要意义。为了研究电极接触方式对环氧树脂表面电荷积聚与消散特性的影响,通过在电极-环氧树脂制备而成的绝缘子... 详细信息

直流电压下绝缘子表面电荷积聚会造成电场畸变,导致气-固界面沿面放电甚至绝缘失效,因此研究表面电荷积聚与消散特性具有重要意义。为了研究电极接触方式对环氧树脂表面电荷积聚与消散特性的影响,通过在电极-环氧树脂制备而成的绝缘子接触面涂抹/不涂抹导电胶来模拟电极-绝缘子间的两种接触状态,即紧密接触/非紧密接触。进而研究金属和固体电介质间不同的接触方式对直流电压下绝缘子表面电荷积聚和消散特性的影响。实验结果表明:当电极与绝缘子间紧密接触时,材料表面主要积聚与施加电压极性相同的电荷,而当电极与绝缘子间非紧密接触时,材料表面主要积聚与施加电压极性相反的电荷。同时,随加压时间延长不同接触方式下的电荷积聚总量也有显著差异。而在消散过程中,两种接触方式下表面电荷都以沿面迁移为主导,电荷分布区域呈显著的收缩现象,且紧密接触方式下的电荷消散速度快于非紧密接触方式。

关键词：直流GIS 环氧树脂表面电荷积聚与消散电极接触方式导电胶

TIPE-mediated up-regulation of MMP-9 promotes colorectal cancer invasion and metastasis through MKK-3/p38/NF-κB pro-oncogenic signaling pathway

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Signal Transduction and Targeted Therapy 2020年第1期5卷 1049-1051页

作者： Huiyu Chen yuhan ye Yan Yang Mengya Zhong Lei Gu Zhaopu Han Jinhua Qiu Zhongchen Liu Xingfeng Qiu Guohong Zhuang Cancer Research Center School of MedicineXiamen UniversityXiamenFujianChina Department of Pathology Zhongshan Hospital Affiliated to Xiamen UniversityXiamenFujianChina Department of General Surgery Shanghai 10th People’s Hospital Affiliated to Tongji UniversityShanghaiChina Department of Gastrointestinal Surgery Zhongshan Hospital Affiliated to Xiamen UniversityXiamenFujianChina Organ Transplantation Institute of Xiamen University Fujian Provincial Key Laboratory of Organ and Tissue RegenerationSchool of MedicineXiamen UniversityXiamenFujianChina

Dear Editor,Colorectal cancer(CRC)is the third most common malignant tumor in human,ranking third in cancer-related mortality.1 Most colon cancer patients die of metastasis.2 Intriguingly,the deregulation of tumor necrosis factorα‑induced protein 8(TIPE)has been shown to play a vital regulatory role in tumor cell growth,proliferation,invasion,and metastasis.3 TIPE is a kind of cytoplasmic protein of 23 kDa.A large number of studies have shown that TIPE is closely related to the development of colon cancer.4 In addition,decreased expression of TIPE was linked to down-regulation of matrix metallopeptidase-1(MMP-1),MMP-9,and vascular endothelial growth factor receptor-2 in breast cancer.

关键词： metastasis TIP p38

Research progress of alkaline earth metal iron-based oxides as anodes for lithium-ion batteries

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Journal of Semiconductors 2024年第2期45卷 21-33页

作者： Mingyuan ye Xiaorui Hao Jinfeng Zeng Lin Li Pengfei Wang Chenglin Zhang Li Liu Fanian Shi yuhan Wu School of Environmental and Chemical Engineering Shenyang University of TechnologyShenyang 110870China College of Materials Science and Engineering Nanjing Tech UniversityNanjing 211816China College of Pharmacy Xinjiang Medical UniversityEngineering Research Center of Xinjiang and Central Asian Medicine Resources(Ministry of Education)Urumqi 830000China Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China School of Physics and Electronic Engineering Jiangsu UniversityZhenjiang 212013China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

Anode materials are an essential part of lithium-ion batteries(LIBs),which determine the performance and safety of ***,graphite,as the anode material of commercial LIBs,is limited by its low theoretical capacity of 372 mA·h·g^(−1),thus hindering further development toward high-capacity and large-scale *** earth metal iron-based oxides are considered a promising candidate to replace graphite because of their low preparation cost,good thermal stability,superior stability,and high electrochemical ***,many issues and challenges remain to be ***,we systematically summarize the research progress of alkaline earth metal iron-based oxides as LIB ***,the material and structural properties,synthesis methods,electrochemical reaction mechanisms,and improvement strategies are ***,existing challenges and future research directions are discussed to accelerate their practical application in commercial LIBs.

关键词： alkali-earth metal iron-based oxides anodes lithium-ion batteries electrochemical energy storage

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牙龈棘层松解性鳞状细胞癌1例

中华口腔医学杂志 2023年第4期58卷 364-366页

作者：林梅芳白婷婷叶宇涵刘争进厦门大学附属中山医院病理科厦门361004

棘层松解性鳞状细胞癌(acantholytic squamous cell carcinoma,ASCC)是鳞状细胞癌的一种少见组织学亚型,具有独特的形态学特点,易被误诊为腺癌、腺瘤、血管肉瘤等。国内外关于口腔ASCC的研究报道较少,本文报道1例老年男性牙龈ASCC,并分... 详细信息

棘层松解性鳞状细胞癌(acantholytic squamous cell carcinoma,ASCC)是鳞状细胞癌的一种少见组织学亚型,具有独特的形态学特点,易被误诊为腺癌、腺瘤、血管肉瘤等。国内外关于口腔ASCC的研究报道较少,本文报道1例老年男性牙龈ASCC,并分析其病因、诊断、鉴别诊断、治疗以及预后,以期为ASCC的临床诊疗提供参考。

关键词：棘层松解血管肉瘤鳞状细胞癌老年男性临床诊疗形态学特点组织学亚型鉴别诊断

多功能层状双氢氧化物纳米复合材料的制备及其体外抗肿瘤性能

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东华大学学报（自然科学版） 2022年第5期48卷 62-69页

作者：叶玉函张红梅陈霞朱利民东华大学化学化工与生物工程学院上海201620

采用水热法制备层状双氢氧化物(layered double hydroxide,LDH)纳米片,将改性聚乙二醇(H_(2)N-PEG-NH_(2))修饰在LDH表面,并进一步修饰靶向肽B3int,最后负载抗癌药物阿霉素(DOX)和光热剂吲哚菁绿(ICG),构建了一种新的DOX-ICG@LDH-PEG-B3int载药系统。通过扫描电子显微镜、紫外-可见分光光度计、热重分析仪等仪器对材料的形貌和理化性质进行表征,结果表明,DOX-ICG@LDH-PEG-B3int具有良好的形态分布,平均直径为77.68 nm。体外释药、体外细胞摄取、体外细胞毒性试验结果表明,DOX-ICG@LDH-PEG-B3int具有pH和近红外(NIR)双重刺激响应药物释放的性能,可以主动靶向肿瘤细胞,并可以显著提高DOX对细胞的杀伤作用以及ICG的光热效果。

关键词：层状双氢氧化物纳米药物传递系统刺激响应性药物释放 B3int