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Chinese Chemical Letters 2021年第3期32卷 1173-1176页

作者： Jie Ma Guiyang Xia Yingda Zang Chuangjun Li Jianbo Yang Jiwu Huang Jianjun Zhang yalun su Aiguo Wang Dongming Zhang State Key Laboratory of Bioactive substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing Dongzhimen HospitalBeijing University of Chinese MedicineBeijing 100700China

Three novel polycyclic polyprenyled acylphloroglucinols,Hyperscabins A-C,were obtained from the aerial parts of Hypericum *** featured an unprecedented 5,5-spiro ketal subunit with the loss of C-2’carbonyl in the phloroglucinol *** structures were characterized by extensive spectroscopic analyses,NMR calculations with DP4+analysis,calculated electronic circular dichroism(ECD)spectra and the application of modified Mosher’s *** the assay of[^(3)H]-5-HT and[^(3)H]-NE reuptake inhibition,compounds 1 and 2 showed good inhibito ry activity(81.8%and 83.2%)in 10μmol/*** addition,compound 1 significantly increased cell viability in the experiment of oxygen and glucose deprivation/deoxygenation.

关键词： Hypericum scabrum Prenylphloroglucinols Decarbonyl 5,5-Spiroketal Neuronal effect

Hydrolyzable tannins from Balanophora polyandra

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Acta Pharmaceutica Sinica B 2013年第1期3卷 46-50页

作者： Yangai Wang Jianbo Yang Aiguo Wang Jie Ma Jin Tian Tengfei Ji yalun su State Key Laboratory of Bioactive substances and Functions of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

This study reports an investigation of the chemical constituents of Balanophora polyandra *** compounds were isolated by column chromatography on silica gel,Toyo-pearl HW-40C,Sephadex LH-20 and by *** structures were elucidated as 1,4-di-O galloy-2-O-[(E)-p-coumaroyl]-β-D-glucopyranose(1),1-O-galloyl-β-D-pyranglucose(2),1-p-coumaryl-β-D-pyranglu-cose(3),1-O-(E)-caffeoyl-β-D-pyranglucose(4),1,3-di-O-galloyl-β-D-pyranglucose(5),1,6-di-O-galloyl-β-D-pyranglucose(6),1-O-(E)-caffeoyl-4-O-galloyl-β-D-pyranglucose(7),1-O-(E)-caffeoy1-6-O galloyl-β-D-pyranglucose(8),1-0-(E)-caffeoy1-4,6-di-O-galloyl-β-D-pyranglucose(9),1-O-(E)-caffeoyl-4,6-(S)-HHDP-B-D-pyranglucose(10),1,23,6-tetra-O-galloyl-β-D-pyranglucose(11),4,6-(S)-hexahydroxydi-phenoyl-(α/β)-D-glucose(12),1-O-(E)-caffeoyl-4,6-[1′,1″-3′,3″,4′,4″-tetrahydroxydibenzofurandicar-boxyl)]-β-D glucopyranose(13),flavogallonic acid(14),and phloretin-4′-O-β-D-glucoside(15)on the basis of spectral *** 1 was a new hydrolyzable tannin,9 was obtained from this genus for the first time,and compounds 5,6 and 11-14 were isolated from this plant for the first time.

关键词： Balanophora polyandra Hydrolyzable tannin 1,4-di-O-galloyl-2-O-[(E)-p-coumaroyl]-β-D-glucopyranose

Key Technologies and Prospects for Electric Vehicles Within Emerging Power Systems: Insights from Five Aspects

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CSEE Journal of Power and Energy Systems 2024年第2期10卷 439-447页

作者： yalun Li Minggao Ouyang C.C.Chan Xueliang sun Yonghua Song Wei Cai Yilin Xie Yuqiong Mao Department of Electrical Engineering and School of Vehicle and MobilityTsinghua UniversityBeijing 100084China School of Vehicle and Mobility Tsinghua UniversityBeijing 100084China Department of Electrical and Electronic Engineering The University of Hong KongHong Kong 999077China Department of Mechanical and Materials Engineering University of Western OntarioLondonON N6A 3K7Canada State Key Laboratory of Internet of Things for Smart City University of MacaoTaipaMacao 999078China Department of Electrical Engineering Tsinghua UniversityBeijing 100084China School of Electrical and Electronic Engineering Harbin University of Science and TechnologyHarbin 150080China

The energy revolution requires coordination in energy consumption, supply, storage and institutional *** energy generation technologies, along with their associated costs, are already fully equipped for large-scale ***, energy storage remains a bottleneck, and solutions areneeded through the use of electric vehicles, which traditionallyplay the role of energy consumption in power systems. Toclarify the key technologies and institutions that support EVsas terminals for energy use, storage, and feedback, the CSEEJPES forum assembled renowned experts and scholars in relevantfields to deliver keynote reports and engage in discussions ontopics such as vehicle–grid integration technology, advancedsolid-state battery technology, high-performance electric motortechnology, and institutional innovation in the industry *** experts also provided prospects for energy storage andutilization technologies capable of decarbonizing new powersystems.

关键词： Electric vehicles engineering philosophy highpower density motor new power system solid state batteries vehicle grid integration.

Revealing the atomic mechanism of diamond–iron interfacial reaction

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Carbon Energy 2024年第3期6卷 255-263页

作者： yalun Ku Kun Xu Longbin Yan Kuikui Zhang Dongsheng Song Xing Li Shunfang Li Shaobo Cheng Chongxin Shan Henan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Material PhysicsMinistry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhouChina Department of Mechanical Engineering Stanford UniversityStanfordCaliforniaUSA Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefeiChina Institute of Quantum Materials and Physics Henan Academy of SciencesZhengzhouChina

Diamond,with ultrahigh hardness,high wear resistance,high thermal conductivity,and so forth,has attracted worldwide ***,researchers found emergent reactions at the interfaces between diamond and ferrous materials,which significantly affects the performance of diamond-based ***,combing experiments and theoretical calculations,taking diamond–iron(Fe)interface as a prototype,the counter-diffusion mechanism of Fe/carbon atoms has been ***,it is identified that Fe and diamond first form a coherent interface,and then Fe atoms diffuse into diamond and prefer the carbon vacancies ***,the relaxed carbon atoms diffuse into the Fe lattice,forming Fe_(3)***,graphite is observed at the Fe_(3)C surface when Fe_(3)C is over-saturated by carbon *** present findings are expected to offer new insights into the atomic mechanism for diamondferrous material's interfacial reactions,benefiting diamond-based device applications.

关键词： coherent interface counter-diffusion diamond iron phase transition

Rational design of diamond through microstructure engineering:From synthesis to applications

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Carbon Energy 2024年第7期6卷 94-122页

作者： yalun Ku Wentao Huang Xing Li Li Wan Kuikui Zhang Longbin Yan Ying Guo Shaobo Cheng Chongxin Shan Henan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Material PhysicsMinistry of EducationSchool of Physics and Laboratory of Zhongyuan LightZhengzhou UniversityZhengzhouChina Institute of Quantum Materials and Physics Henan Academy of SciencesZhengzhouChina

Diamond possesses excellent thermal conductivity and tunable ***,the high-pressure,high-temperature,and chemical vapor deposition methods are the most promising strategies for the commercial-scale production of synthetic *** diamond has been extensively employed in jewelry and cutting/grinding tasks,the realization of its high-end applications through microstructure engineering has long been ***,we discuss the microstructures encountered in diamond and further concentrate on cutting-edge investigations utilizing electron microscopy techniques to illuminate the transition mechanism between graphite and diamond during the synthesis and device *** impacts of distinct microstructures on the electrical applications of diamond,especially the photoelectrical,electrical,and thermal properties,are *** recently reported elastic and plastic deformations revealed through in situ microscopy techniques are also ***,the limitations,perspectives,and corresponding solutions are proposed.

关键词： diamond in situ microscopy microstructures phase transition structure-property relationship

Flexible bidirectional pulse charging regulation achieving long-life lithium-ion batteries

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Journal of Energy Chemistry 2024年第9期96卷 59-71页

作者： Xiaodong Xu Shengjin Tang Xuebing Han Languang Lu Yudi Qin Jiuyu Du Yu Wu yalun Li Chuanqiang Yu Xiaoyan sun Xuning Feng Minggao Ouyang Rocket Force University of Engineering Xi’an 710025ShaanxiChina State Key Laboratory of Intelligent Green Vehicle and Mobility School of Vehicle and MobilityTsinghua UniversityBeijing 100084China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China

Typical application scenarios,such as vehicle to grid(V2G)and frequency regulation,have imposed significant long-life demands on lithium-ion ***,we propose an advanced battery life-extension method employing bidirectional pulse charging(BPC)*** traditional constant current charging methods,BPC strategy not only achieves comparable charging speeds but also facilitates V2G frequency regulation *** significantly enhances battery cycle ampere-hour throughput and demonstrates remarkable life extension *** this interesting conclusion,adopting model identification and postmortem characterization to reveal the life regulation mechanism of BPC:it mitigates battery capacity loss attributed to loss of lithium-ion inventory(LLI)in graphite anodes by intermittently regulating the overall battery voltage and anode potential using a negative charging ***,from the perspective of internal side reaction,the life extension mechanism is further revealed as inhibition of solid electrolyte interphase(SEI)and lithium dendrite growth by regulating voltage with a bidirectional pulse current,and a semi-empirical life degradation model combining SEI and lithium dendrite growth is developed for BPC scenarios health management,the model parameters are identified by genetic algorithm with the life simulation exhibiting an accuracy exceeding 99%.This finding indicates that under typical rate conditions,adaptable BPC strategies can extend the service life of LFP battery by approximately 123%.Consequently,the developed advanced BPC strategy offers innovative perspectives and insights for the development of long-life battery applications in the future.

关键词： Lithium-ion battery Long-life regulation Bidirectional pulse charging Mechanism identification

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川黄柏化学成分研究

中药材 2009年第2期32卷 208-210页

作者：王萌吉腾飞杨建波苏亚伦中国医学科学院/北京协和医学院药物研究所中草药物质基础与资源利用教育部重点实验室北京100050

目的:川黄柏化学成分的提取分离和结构鉴定。方法:应用萃取、硅胶柱层析、凝胶柱分离等多种手段进行化学成分提取分离,应用质谱、核磁等手段进行结构鉴定。结果:从川黄柏树皮氯仿萃取部位分离得到10个化合物,鉴定为:小檗碱(1)、咖啡酸乙... 详细信息

目的:川黄柏化学成分的提取分离和结构鉴定。方法:应用萃取、硅胶柱层析、凝胶柱分离等多种手段进行化学成分提取分离,应用质谱、核磁等手段进行结构鉴定。结果:从川黄柏树皮氯仿萃取部位分离得到10个化合物,鉴定为:小檗碱(1)、咖啡酸乙酯(2)、异香草醛(3)、阿魏酸(4)、(±)-5,5′-dimethoxylariciresinol(5)、Methylβ-orsellinate(6)、γ-崖椒碱(7)、(±)-Lyoniresinol(8)、β-谷甾醇(9)、豆甾醇(10)。结论:咖啡酸乙酯、异香草醛、阿魏酸、(±)-5,5′-dimethoxylariciresinol和Methylβ-orsellinate均为首次从黄柏属植物中分离得到。

关键词：川黄柏化学成分

In-situ fabrication of on-chip 1T'-MoTe_(2)/Ge Schottky junction photodetector for self-powered broadband infrared imaging and position sensing

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Nano Research 2024年第6期17卷 5587-5594页

作者： Menglei Zhu Kunxuan Liu Di Wu Yunrui Jiang Xue Li Pei Lin Zhifeng Shi Xinjian Li Ran Ding yalun Tang Xuechao Yu Longhui Zeng School of Physics and Microelectronics and Key Laboratory of Material PhysicsZhengzhou UniversityZhengzhou 450052China Department of Electrical and Computer Engineering University of California San DiegoLa JollaCA 92093USA State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China

High-sensitivity room-temperature multi-dimensional infrared(IR)detection is crucial for military and civilian ***,the gapless electronic structures and unique optoelectrical properties have made the two-dimensional(2D)topological semimetals promising candidates for the realization of multifunctional optoelectronic ***,we demonstrated the in-situ construction of high-performance 1T’-MoTe_(2)/Ge Schottky junction device by inserting an ultrathin AlOx passivation *** good detection performance with an ultra-broadband detection wavelength range of up to 10.6 micron,an ultrafast response time of~160 ns,and a large specific detectivity of over 109 Jones in mid-infrared(MIR)range surpasses that of most 2D materials-based IR sensors,approaching the performance of commercial IR *** on-chip integrated device arrays with 64 functional detectors feature high-resolution imaging capability at room *** these outstanding detection features have enabled the demonstration of position-sensitive detection *** demonstrates an exceptional position sensitivity of 14.9 mV/mm,an outstanding nonlinearity of 6.44%,and commendable trajectory tracking and optoelectronic demodulation *** study not only offers a promising route towards room-temperature MIR optoelectronic applications,but also demonstrates a great potential for application in optical sensing systems.

关键词： MoTe_(2) broadband photodetection Schottky junction imaging position sensitive detector

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五叶地锦化学成分研究

中国中药杂志 2010年第12期35卷 1573-1576页

作者：杨建波王爱国吉腾飞苏亚伦中国医学科学院北京协和医学院药物研究所中草药物质基础与资源利用教育部重点实验室北京100050

目的：研究五叶地锦Parthenocissus quinquefolia茎的化学成分。方法：采用薄层色谱,硅胶柱色谱,Sephadex LH-20凝胶柱色谱等方法进行分离纯化,使用波谱分析技术和理化常数对照等方法对得到的化合物进行结构鉴定。结果：从五叶地锦的醋... 详细信息

目的：研究五叶地锦Parthenocissus quinquefolia茎的化学成分。方法：采用薄层色谱,硅胶柱色谱,Sephadex LH-20凝胶柱色谱等方法进行分离纯化,使用波谱分析技术和理化常数对照等方法对得到的化合物进行结构鉴定。结果：从五叶地锦的醋酸乙酯部位分离得到9个化合物,分别为没食子酸（3,4,5-trihydroxy-benzoic acid1）,piceatannol（2）,白藜芦醇（res-veratrol3）,resveratrol trans-dehydrodimer（4）,cyphostemmin B（5）,pallidol（6）,cyphostemmin A（7）,槲皮素3-O-α-L-鼠李糖苷（quercetin-3-O-α-L-rhamnoside8）,myricetin-3-O-α-L-rhamnoside（9）。结论：化合物1,4~9均为首次从该植物中分离得到。

关键词：地锦属五叶地锦化学成分

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蒙古沙冬青的化学成分

中国中药杂志 2011年第8期36卷 1040-1042页

作者：冯文娟欧阳发苏亚伦李进吉腾飞新疆珍稀濒危物种保护生物学实验室新疆师范大学生命科学学院新疆乌鲁木齐830054 中草药物质基础与资源利用教育部重点实验室中国医学科学院&北京协和医学院药物研究所北京100050

目的：研究蒙古沙冬青地上部分的化学成分。方法：采用硅胶柱色谱、Sephadex LH-20凝胶色谱和高效液相制备色谱等技术对其化学成分进行分离纯化，通过理化性质和波谱数据鉴定。结果：从蒙古沙冬青的地上部分分离鉴定了9个化合物，分别... 详细信息

目的：研究蒙古沙冬青地上部分的化学成分。方法：采用硅胶柱色谱、Sephadex LH-20凝胶色谱和高效液相制备色谱等技术对其化学成分进行分离纯化，通过理化性质和波谱数据鉴定。结果：从蒙古沙冬青的地上部分分离鉴定了9个化合物，分别为：（＋）-maackiain（1），短叶苏木酚（2），7-羟基-4′-甲氧基异黄酮（3），大豆苷元4′，7-二葡萄糖苷（4），染料木素4′，7-二葡萄糖苷（5），isolupalbigenin（6），芒柄花苷（7），β-谷甾醇（8），β-胡萝卜苷（9）。结论：化合物2，4—6为首次从该属植物中分离得到。

关键词：蒙古沙冬青沙冬青属化学成分