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中西医结合治疗未破裂卵泡黄素化综合征的临床观察

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中国民间疗法 2024年第7期32卷 67-70页

作者：杨露荑林珊王瑞明福建省福州市妇幼保健院福建福州350008

目的:分析中西医结合治疗未破裂卵泡黄素化综合征(LUFS)的临床效果。方法:选择LUFS患者60例,随机分为对照组和观察组,每组30例。对照组采用西医常规疗法(来曲唑片、注射用绒促性素、地屈孕酮片)治疗,观察组在对照组基础上联合夏桂成教... 详细信息

目的:分析中西医结合治疗未破裂卵泡黄素化综合征(LUFS)的临床效果。方法:选择LUFS患者60例,随机分为对照组和观察组,每组30例。对照组采用西医常规疗法(来曲唑片、注射用绒促性素、地屈孕酮片)治疗,观察组在对照组基础上联合夏桂成教授补肾促排卵汤治疗,治疗3个月经周期。比较两组患者排卵情况、卵巢动脉血流[搏动指数(PI)与阻力指数(RI)]、黄体生成素(LH)及妊娠结局。结果:观察组排卵率为86.67%(26/30),明显高于对照组的63.33%(19/30),差异有统计学意义(P<0.05)。治疗后,两组患者PI、RI均低于治疗前(P<0.05),LH水平均高于治疗前(P<0.05),且观察组PI、RI低于对照组(P<0.05),LH水平高于对照组(P<0.05)。观察组妊娠率为60.00%(18/30),明显高于对照组的33.33%(10/30),差异有统计学意义(P<0.05)。结论:中西医结合治疗LUFS可改善患者卵巢动脉血流状态与LH水平,促进患者排卵,提升妊娠率。

关键词：未破裂卵泡黄素化综合征经期排卵期补肾促排卵汤夏桂成来曲唑片注射用绒促性素地屈孕酮片中西医结合

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半导体自旋的超快动力学研究

物理实验 2024年第8期44卷 1-10页

作者：崔云鹏毕芷瑄杨鲁懿清华大学物理系北京100084

半导体自旋电子学是凝聚态物理中的重要研究内容,深入了解半导体中的自旋动力学过程对于推动新一代自旋电子学器件的发展至关重要.时间分辨的磁光法拉第和克尔转角技术是探究自旋动力学的实验方法,被广泛应用于对自旋极化和自旋弛豫等... 详细信息

半导体自旋电子学是凝聚态物理中的重要研究内容,深入了解半导体中的自旋动力学过程对于推动新一代自旋电子学器件的发展至关重要.时间分辨的磁光法拉第和克尔转角技术是探究自旋动力学的实验方法,被广泛应用于对自旋极化和自旋弛豫等物理过程的研究.本文介绍了时间分辨磁光法拉第和克尔转角的实验原理及在热门半导体自旋电子学材料中相关的实验进展,旨在激发学生对半导体自旋电子学和自旋超快动力学的研究兴趣,促进学生对该领域的深入探索.

关键词：半导体自旋电子学超快光学磁光效应自旋弛豫机制

Polymer matrix mediated solvation of LiNO3 in carbonate electrolytes for quasi-solid high-voltage lithium metal batteries

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Nano Research 2020年第9期13卷 2431-2437页

作者： Zijian Wang Kai yang Yongli Song Hai Lin Ke Li Yanhui Cui luyi yang Feng Pan School of Advanced Materials Peking University Shenzhen Graduate School Shenzhen 518055China

Lithium(Li)metal is one of the most promising anodes for next-generation energy storage ***,the Li dendrite formation and unstable solid-electrolyte interface(SEI)have hindered its further *** nitrate(LiNO3)is extensively used as an effective electrolyte additive in ether-based electrolytes to improve the stability of lithium ***,it is rarely utilized in carbonate electrolytes due to its low ***,a novel gel polymer electrolyte(GPE)consisting of poly(vinylidene fluoride)(PVDF),poly(methyl methacrylate)(PMMA),poly(ethylene oxide)(PEO)with LiN03 additive is proposed to solve this *** this GPE,polyether-based PEO serves as a matrix for dissolving LiNO3 which can be decomposed into a fast Li-ion conductor(Li3N)in conventional carbonate electrolytes to enhance the stability and Li^+conductivity of the SEI *** a result,dendrite formation is effectively suppressed,and a significantly improved average Coulombic efficiency(CE)of 97.2%in Li-Cu cell is *** using this novel GPE coupled with Li anode and LiNi0.5Mn0.3Co0.2O2(NMC532),excellent capacity retention of 94.1%and high average CE of over 99.2%are obtained after 200 cycles at 0.5 *** work presents fresh insight into practical modification strategies on high-voltage Li metal batteries.

关键词： Li anode gel polymer electrolyte lithium nitrate Li dendrite electrolyte additives

Atomic/nano-scale in-situ probing the shuttling effect of redox mediator in Na-O_(2) batteries

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Journal of Energy Chemistry 2021年第5期30卷 438-443页

作者： Kai yang Yiwei Li Langlang Jia Yan Wang Zijian Wang YuChen jia Shichun yang Magda Titirici Xinhua Liu luyi yang Feng Pan School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhen 518055GuangdongChina School of Transportation Science and Engineering Beihang UniversityBeijing 100191China Department of Chemical Engineering Imperial College LondonLondon SW72AZUK

Sodium-oxygen batteries(Na-O_(2))have attracted extensive attention as promising energy storage systems due to their high energy density and low *** mediators are often employed to improve Na-O_(2) battery performance,however,their effect on the formation mechanism of the oxygen reduction product(NaO_(2))is still ***,we have investigated the formation mechanism of NaO_(2) during the discharge process in the presence of a redox mediator with the help of atomic/nano-scale in-situ characterization tools used in concert(*** force microscope,electrochemical quartz crystal microbalance(EQCM)and laser nano-particle analyzer).As a result,real-time observations on different time scales show that by shuttling electrons to the electrolyte,the redox mediator enables formation of NaO_(2) in the solution-phase instead of within a finite region near the electrode *** findings provide new fundamental insights on the understanding of Na-O_(2) batteries and new consequently perspectives on designing high performance metal-O_(2) batteries and other related functions.

关键词： Na-O_(2)battery In-situ AFM EQCM Redox mediator Shuttling effect

Revealing the anion intercalation behavior and surface evolution of graphite in dual-ion batteries via in situ AFM

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Nano Research 2020年第2期13卷 412-418页

作者： Kai yang Langlang Jia Xinhua Liu Zijian Wang Yan Wang Yiwei Li Haibiao Chen Billy Wu luyi yang Feng Pan School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhen 518055China Dyson School of Design Engineering Imperial College LondonLondon SW72AZt UK

Graphite as a positive electrode material of dual ion batteries(DIBs)has attracted tremendous attentions for its advantages including low lost,high working voltage and high energy ***,very few literatures regarding to the real-time observation of anion intercalation behavior and surface evolution of graphite in DIBs have been ***,we use in situ atomic force microscope(AFM)to directly observe the intercalation/de-intercalation processes of PF6^-in graphite in real ***,by measuring the change in the distance between graphene layers during intercalation,we found that PF6^-intercalates in one of every three graphite layers and the intercalation speed is measured to be 2μm-min^-***,graphite will wrinke and suffer structural damnages at high voltages,along with severe electrolyte decomposition on the *** findings provide useful information for further optimizing the capacity and the stability of graphite anode in DIBs.

关键词： dual ion battery in situ atomic force microscope(AFM) graphite positive electrode hierarchical anion intercalation structure evolution surface reactior

3种粘接剂分别粘接金属托槽至抛光及上釉锆瓷的粘接强度

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实用口腔医学杂志 2024年第1期40卷 53-57页

作者：曹宇刘佳张惠超许竞予余岭叶素荣杨陆一吉林大学口腔医院正畸科吉林省口腔科学与技术纳米工程重点实验室130021

目的:研究3种粘接剂对抛光及上釉锆瓷与正畸金属托槽粘接强度和耐久性的影响。方法:选用2种通用型粘接剂Single Bond Universal(SBU)和Prime&Bond Universal(PBU),以TransbondTMMIP(TM)为对照分别将抛光组、上釉组锆瓷与上颌中切牙金属... 详细信息

目的:研究3种粘接剂对抛光及上釉锆瓷与正畸金属托槽粘接强度和耐久性的影响。方法:选用2种通用型粘接剂Single Bond Universal(SBU)和Prime&Bond Universal(PBU),以TransbondTMMIP(TM)为对照分别将抛光组、上釉组锆瓷与上颌中切牙金属托槽粘接,试样共6组(n=20)。水浴或水浴+冷热循环储存后测试全部试件剪切粘接强度(SBS),分析断裂形态以及粘接剂残留指数(ARI)。结果:粘接剂(P<0.001)和储存条件(P<0.001)显著影响锆瓷与托槽的剪切粘接强度;抛光或上釉(P=0.09)组间无统计学差异。SBU在各组中都表现出较强的粘接强度和较低的ARI,3种粘接剂间的ARI分数存在显著差异(P<0.001)。结论:粘接金属托槽与抛光及上釉锆瓷时,SBU较PBU和TM有更好的粘接性能。

关键词：通用型粘接剂锆瓷正畸托槽剪切粘接强度

Practical evaluation of prelithiation strategies for next-generation lithium-ion batteries

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Carbon Energy 2023年第8期5卷 55-77页

作者： Shiming Chen Zhen Wang Meng Zhang Xiaoze Shi Lu Wang Weifeng An Zikun Li Feng Pan luyi yang School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhenChina BTR New Material Group Co. Ltd.ShenzhenChina R&D Institute Shenzhen BAK Power Battery Co.Ltd.ShenzhenChina

With the increasing market demand for high-performance lithium-ion batteries with high-capacity electrode materials,reducing the irreversible capacity loss in the initial cycle and compensating for the active lithium loss during the cycling process are critical *** recent years,various prelithiation strategies have been developed to overcome these *** these approaches are carried out under a wide range of conditions,it is essential to evaluate their suitability for large-scale commercial *** this review,these strategies are categorized based on different battery assembling stages that they are implemented in,including active material synthesis,the slurry mixing process,electrode pretreatment,and battery ***,their advantages and disadvantages in commercial production are discussed from the perspective of thermodynamics and *** review aims to provide guidance for the future development of prelithiation strategies toward commercialization,which will potentially promote the practical application of next-generation high-energy-density lithium-ion batteries.

关键词： high-energy-density irreversible capacity loss lithium-ion batteries practical application prelithiation

Glacier area changes in the Nujiang-Salween River Basin over the past 45 years

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Journal of Geographical Sciences 2022年第6期32卷 1177-1200页

作者： JI Xuan CHEN Yunfang JIANG Wei LIU Chang yang luyi Institute of International Rivers and Eco-Security Yunnan UniversityKunming 650091China Yunnan Key Laboratory of International Rivers and Transboundary Eco-Security Yunnan UniversityKunming 650091China Faculty of Geography Yunnan Normal UniversityKunming 650500China

Automated image classification and visual interpretation of Landsat imagery were used to extract the glacier boundary in the Nujiang-Salween River Basin(NSRB)around the years 1975,2000,and *** spatiotemporal characteristics of glacier area changes in the NSRB were determined and the reasons for the spatial heterogeneity in glacier area changes were discussed,based on comparative analyses of temperature and precipitation data from meteorological stations around the *** results indicate that 1)the total glacier area in the NSRB decreased by 477.78 km^(2)(28.17%)at a rate of-0.62%/a in *** shrinkage occurred at low and mid altitudes,with the most severe occurring at 5290-5540 m,accounting for 40%of the total *** other river basins in China,the relative glacier area change rate in the NSRB was similar to that for typical inland river basins in northwest China but lower than that for other transboundary river basins in the southeastern Tibetan Plateau.2)These areal changes in the NSRB presented obvious regional *** glaciers in the Hengduan Mountains retreated significantly,followed by those in the Nyainqentanglha Mountains,with relatively low shrinkage observed in the Tanggula *** number of cold and hot spots indicating areal changes increased after 2000,along with their spatial heterogeneity.3)The glacier shrinkage rate over different time intervals was positively correlated with ***,spatial heterogeneity of climate change effects could elucidate differences in the glacier area change rate in different regions of the *** temperature rise was determined as the primary reason for the significant glacial retreat over the past 45 *** the significant warming trend continues,the glacier area in the NSRB is likely to shrink further.

关键词： glacier change climate change remote sensing Nujiang-Salween River Basin international river

Insights Into the Interfacial Degradation of High-Voltage All-Solid-State Lithium Batteries

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Nano-Micro Letters 2022年第12期14卷 1-13页

作者： Jiawen Li Yuchen Ji Haoran Song Shiming Chen Shouxiang Ding Bingkai Zhang luyi yang Yongli Song Feng Pan School of Advanced Material Peking University Shenzhen Graduate SchoolShenzhen 518055People’s Republic of China Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 51006People’s Republic of China

Poly(ethylene oxide)(PEO)-based solid polymer electrolyte(SPE)is considered as a promising solid-state electrolyte for all-solid-state lithium batteries(ASSLBs).Nevertheless,the poor interfacial stability with high-voltage cathode materials(e.g.,LiCoO_(2))restricts its application in high energy density solid-state ***,high-voltage stable Li_(3)AlF_(6) protective layer is coated on the surface of LiCoO_(2) particle to improve the performance and investigate the failure mechanism of PEO-based *** phase transition unveils that chemical redox reaction occurs between the highly reactive LiCoO_(2) surface and PEO-based SPE,resulting in structure collapse of LiCoO_(2),hence the poor cycle performance of PEO-based ASSLBs with LiCoO_(2) at charging voltage of 4.2 V vs Li/Li+.By sharp contrast,no obvious structure change can be found at the surface of Li_(3)AlF_(6)-coated LiCoO_(2),and the original layered phase was well *** the charging voltage reaches up to 4.5 V vs Li/Li+,the intensive electrochemical decomposition of PEO-based SPE occurs,leading to the constant increase of cell impedance and directly causing the poor *** work not only provides important supplement to the failure mechanism of PEO-based batter-ies with LiCoO_(2),but also presents a universal strategy to retain structure stability of cathode-electrolyte interface in high-voltage ASSLBs.

关键词： Solid-state battery Poly(ethylene oxide) Surface modification Interface stability High-voltage cathode