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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

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

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

Influence of electrolyte structural evolution on battery applications:Cationic aggregation from dilute to high concentration

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Aggregate

Aggregate 2022年第1期3卷 138-158页

作者： Jiangtao Hu Yuchen Ji Guorui Zheng Weiyuan Huang Yuan Lin luyi yang Feng Pan School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhenPeople’s Republic of China Chemistry and Chemical Engineering Guangdong Laboratory ShantouPeople’s Republic of China Beijing National laboratory for Molecular Sciences Key Laboratory of PhotochemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijingPeople’s Republic of China

In the context of the rapid expansion of the electric vehicle market,the request for high-energy-density lithium-ion batteries(LIBs)has steadily increased,hence the demand for highly stable *** the past years,efforts have been devoted to the improvement of electrolyte *** a benchmarking breakthrough,the achievement of high concentration electrolyte(HCE)can be attributed to the altered cationic aggregation(i.e.,cation-solvent and cation-anion coordination environment),which offers technical superiority over the widely applied conventional dilute *** recently,based on the understanding of the dilute electrolyte and HCE,the concept of localized HCE(LHCE)has been proposed and extensively *** these findings reveal a roadmap of electrolyte optimization for high-performance LIBs via coordination structure *** elucidating the correlation of structure evolution therein and its critical effects on battery performance,this review aims to establish the design principle of electrolytes based on their structures other than component studies and thereby accelerate the development of high-performance electrolytes.

关键词： cationic aggregate electrolytes Li-ion batteries

Constructing low-valent Ni nanoparticles for highly selective CO_(2) reduction

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Chinese Chemical Letters 2022年第1期33卷 424-427页

作者： Kuanda Xu Shisheng Zheng yang Li Honghao Chu Qi Xiong Zongwei Mei Qinghe Zhao luyi yang Shunning Li Feng Pan School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhen 518055China

The electroreduction of CO_(2)(CO_(2)RR)into value-added chemicals is a sustainable strategy for mitigating global warming and managing the global carbon ***,developing an efficient and selective catalyst is still the central ***,we developed a simple two-step pyrolysis method to confine low-valent Ni-based nanoparticles within nitrogen-doped carbon(Ni-NC).As a result,such Ni-based nanoparticles can effectively reduce CO_(2)to CO,with a maximum CO Faradaic efficiency(FE)of 98%at an overpotential of 0.8 V,as long as good *** and the density functional theory(DFT)calculation results reveal that low-valent Ni plays a key role in activity and selectivity *** study presents a new understanding of Ni-based CO_(2)RR,and provides a simple,scalable approach to the synthesis of low-valent catalysts towards efficient CO_(2)RR.

关键词： CO_(2)reduction reaction Ni-based catalysts Electrocatalytic selectivity Low-valent catalyst DFT calculation

Coil-to-Stretch Transition of Binder Chains Enabled by“Nano-Combs”to Facilitate Highly Stable SiO_(x) Anode

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Energy & Environmental Materials 2022年第4期5卷 1310-1316页

作者： Shida Xue Yanda Fu Zhibo Song Shiming Chen Yuchen Ji Yan Zhao Huizhi Wang Guoyu Qian luyi yang Feng Pan s.xue y.fuz.songs.cheny.jidr.7.qianpro6.l.yangpro6.6.pan school of advanced materialspeking university shenzhen graduate schoolshenzhen 518055china department of mechanical engineering imperial college londonlondon sw72bxuk

The commercialized binder carboxymethyl cellulose sodium(CMC-Na)is considered unsuitable for micro-sized SiO_(x) anode as it cannot endure the large volume change to retain the conductive network during repeated charge/discharge ***,a small amount of silicon nanoparticles(SiNPs)is added during slurry preparation process as“nano-combs”to unfold the convoluted CMC-Na polymer chains so that they undergo a coilto-stretch transition by interaction between polar groups(e.g.,-OH,-COONa)of polymer and SiNPs’large *** maximizing the utilization of binders,a uniform conductive network is constructed with increased interfacial contact with micro-sized SiO_(x).As a result,the SiO_(x) electrode with optimized(10 wt%)SiNPs addition shows significantly improved initial capacity and cycling *** revisiting CMCNa,a currently deemed unqualified binder in SiO_(x) anode,this work gives a brand-new perspective on the failing mechanism of Si-based anode materials and an improving strategy for electrode preparation.

关键词： binding network CMC-Na lithium-ion batteries Si anode SiO_(x)anode

Polymeric Wetting Matrix for a Stable Interface between Solid-state Electrolytes and Li Metal Anode

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Chinese Journal of Structural Chemistry 2022年第5期41卷 48-54页

作者： Haoran Song Shida Xue Shiming Chen Zijian Wang Yongli Song Jiawen Li Zhibo Song luyi yang Feng Pan School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhen 518055China

Succinonitrile(SN)based solid-state electrolytes(SSEs)have potential applications in lithium(Li)batteries due to their ease of preparation and high ionic conductivity at room ***,a novel SSE consisting of poly(vinylidene fluoride-hexafluoropropy-lene)(PVDF-HFP),poly(methyl methacrylate)(PMMA)and Li_(1.3)Al_(0.3)Ti_(1.7)(PO_(4))_(3) with SN is fabricated,where PMMA is added to serve as a polymer matrix for better wettability of *** to the addition of PMMA,improved room-temperature ionic conductivity of the SSE is *** importantly,better interfacial contact as well as more stable solid-state electrolyte(SEI)layer between SSE and Li anode can be also *** a result,homogeneous and dendrite-free Li plating can be achieved for over 1000 h in Li symmetric *** coupled with LiNi_(0.5)Mn_(0.3)Co_(0.2)O_(2) cathode and Li anode,the proposed SSE delivers excellent cycling stability and rate capability in *** implementing SSEs with a polymeric wetting agent,this work provides fresh perspectives on stabilizing the interface between SSEs and Li metal anodes.

关键词： Li metal Li dendrite poly(methyl methacrylate) succinonitrile composite solid-state electrolyte