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CSEE Journal of Power and Energy Systems 2021年第2期7卷 250-260页

作者： jianhong gao Moufa Guo Duan-Yu Chen College of Electrical Engineering and Automation Fuzhou UniversityFuzhou 350108China Department of Electrical Engineering Yuan Ze UniversityTaoyuan 32003TaiwanChina

Effective features are essential for fault *** to the faint characteristics of a single line-to-ground(SLG)fault,fault line detection has become a challenge in resonant grounding distribution *** paper proposes a novel fault line detection method using waveform fusion and one-dimensional convolutional neural networks(1-D CNN).After an SLG fault occurs,the first-half waves of zero-sequence currents are collected and superimposed with each other to achieve waveform *** compelling feature of fused waveforms is extracted by 1-D CNN to determine whether the fused waveform source contains the fault ***,the 1-D CNN output is used to update the value of the counter in order to identify the fault *** the lack of fault data in existing distribution systems,the proposed method only needs a small quantity of data for model training and fault line *** addition,the proposed method owns fault-tolerant *** if a few samples are misjudged,the fault line can still be detected correctly based on the full output results of 1-D *** results verified that the proposed method can work effectively under various fault conditions.

关键词： Fault line detection one-dimensional convolutional neural network resonant grounding distribution systems waveform fusion

Latest progress on fully non-fused electron acceptors for high-performance organic solar cells

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Chinese Chemical Letters 2023年第8期34卷 76-81页

作者： jianhong gao Xiaodong Zhu Hanyi Bao Jibao Feng Xiang gao Zhitian Liu Ziyi Ge Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials Hubei Key Laboratory of Plasma Chemistry and Advanced MaterialsSchool of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205China Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Benefitting from the development of non-fullerene acceptors(NFAs),remarkable advances have been achieved with the power conversion efficiency(PCE)exceeding 19%over the last few ***,the major achievement comes from fused ring electron acceptors(FREAs)with complex structures,leading to high ***,it is urgent to design new materials to resolve the cost issues concerning basic commercial requirements of organic solar ***,great progress has been made in fully non-fused ring electron acceptors(NFREAs)with only single-aromatic ring in the electron-donating core,which might achieve a fine balance between the efficiency and cost,thus accelerating the commercial application of organic solar ***,this article summarizes the recent advances of fully NFREAs with efficiency over 10%,which may provide a guidance for developing the cost-effective solar cells.

关键词： Organic solar cells Fully non-fused electron acceptors Noncovalent interaction Power conversion efficiency Over 10%

Constructing globally consecutive 3D conductive network using P-doped biochar cotton fiber for superior performance of silicon-based anodes

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Journal of Materials Science & Technology 2024年第6期173卷 181-191页

作者： Jun Cao jianhong gao Kun Wang Zhuoying Wu Xinxin Zhu Han Li Min Ling Chengdu Liang Jun Chen Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Institute of Zhejiang University-Quzhou Zheda Road 99Quzhou 324000China

The inferior conductivity and drastic volume expansion of silicon still remain the bottleneck in achieving high energy density Lithium-ion Batteries(LIBs).The design of the three-dimensional structure of electrodes by compositing silicon and carbon materials has been employed to tackle the above challenges,however,the exorbitant costs and the uncertainty of the conductive structure persist,leaving ample room for ***,silicon nanoparticles were innovatively composited with eco-friendly biochar sourced from cotton to fabricate a 3D globally consecutive conductive *** network serves a dual purpose:enhancing overall electrode conductivity and serving as a scaffold to maintain electrode *** conductivity of the network was further augmented by introducing P-doping at the optimum doping temperature of 350℃.Unlike the local conductive sites formed by the mere mixing of silicon and conductive agents,the consecutive network can affirm the improvement of the conductivity at a macro ***,first-principle calculations further validated that the rapid diffusion of Li^(+)is attributed to the tailored electronic microstructure and charge rearrangement of the *** prepared consecutive conductive Si@P-doped carbonized cotton fiber anode outperforms the inconsecutive Si@Graphite anode in both cycling performance(capacity retention of 1777.15 mAh g^(-1) vs.682.56 mAh g^(-1) after 150 cycles at 0.3 C)and rate performance(1244.24 mAh g^(-1) vs.370.28 mAh g^(-1) at 2.0 C).The findings of this study may open up new avenues for the development of globally interconnected conductive networks in Si-based anodes,thereby enabling the fabrication of high-performance LIBs.

关键词： 3D conductive network Biochar carbon-silicon anode Heteroatoms doping strategy DFT calculation Lithium-ion battery

Effects of subtle change in side chains on the photovoltaic performance of small molecular donors for solar cells

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Chinese Chemical Letters 2022年第10期33卷 4659-4663页

作者： Xiang gao Kuibao Yu Yanjiao Zhao Tao Zhang Jing Wen Zifeng Liu Zhihao Liu Guofeng Ye jianhong gao Ziyi Ge Zhitian Liu Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials Hubei Key Laboratory of Plasma Chemistry and Advanced MaterialsSchool of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205China Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Small-molecule organic solar cells(SMOSCs)have attracted considerable attention owing to the merits of small molecules,such as easy purification,well-defined chemical *** achieve high-performance SMOSCs,the rational design of well-matched donor and acceptor materials is extremely *** this work,two new small molecular donor materials with subtle change in the conjugated side thiophene rings are *** subtle change significantly affects the photovoltaic performance of molecular *** with chlorinated molecule MDJ-Cl,the non-chlorinated analogue MDJ exhibits decreased miscibility with the non-fullerene acceptor Y6,can more efficiently quench the excitons of *** a result,a improved PCE of 11.16% is obtained for MDJ:Y6 based *** results highlight the importance of fine-tuning the molecular structure to achieve high-performance SMOSCs.

关键词： Organic solar cells Small molecular donor materials Chlorination Miscibility Photovoltaic performance

A low-cost wide bandgap polymer based on carboxylate substituted thiazole enables efficient organic solar cells with remarkable batch-to-batch reproducibility

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Science China Chemistry 2024年

作者： Xiaodong Zhu Yuchen Lei jianhong gao Yanjun He Jinsicheng Liu Qian Guo Xiang gao Liwei Xiong Xunchang Wang Renqiang Yang Zhitian Liu Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials Hubei Key Laboratory of Plasma Chemistry and Advanced MaterialsSchool of Materials Science and EngineeringWuhan Institute of Technology Key Laboratory of Optoelectronic Chemical Materials and Devices (Ministry of Education) School of Optoelectronic Materials&TechnologyJianghan University

Constructing the low-cost, high-efficiency, and good batch-to-batch reproducibility polymer donor is vitally important for the application of organic solar cells. Herein, we develop a structurally simple carboxylate-substituted thiazole as an electronwithdrawing building block to construct a low-cost polymer, PBTTzE, containing a facilely prepared chlorinated benzo[1,2-b:4,5-b′]dithiophene(BDTCl) donor unit. Benefiting from synergistic electron deficient effects of chlorination and ester group and C=N, as well as the noncovalent interaction of S···O and S···N, PBTTzE exhibits a deep HOMO energy level(-5.59 eV),and a planar skeleton structure. When combined with the IT-4F acceptor, the polymer(54 kDa) demonstrated a champion PCE of15.87%, which is the highest value in the IT-4F-based binary devices to date. Moreover, PBTTzE exhibits excellent batch-tobatch reproducibility due to its very similar PCEs within a range of 43–76 kDa. In addition, an alloyed state and complementary absorption can be formed between PM6 and PBTTzE. Therefore, in a ternary device with PBTTzE added to the PM6:BTP-eC9blend, a top PCE of 18.76% is achieved due to the suppressed energy loss, prolonged exciton diffusion distance, and improved charge transport. Our work demonstrates that the carboxylate-substituted thiazole is a highly promising acceptor unit for constructing low-cost and high-performance polymers.

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处于社会边缘的行医者--13至15世纪西欧的犹太医生

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历史教学（下半月） 2020年第8期 44-51页

作者：高建红陕西师范大学历史文化学院医学社会史研究中心陕西西安710119

在中世纪的西欧,存在着各种不利于犹太人行医的因素,但许多犹太人仍选择成为医生并取得巨大的成功。这并非一种偶然现象,而有其内在的必然性。犹太文化传统中对卫生保健的重视,犹太人掌握多种语言的能力,为犹太人进入医学这一领域提供... 详细信息

在中世纪的西欧,存在着各种不利于犹太人行医的因素,但许多犹太人仍选择成为医生并取得巨大的成功。这并非一种偶然现象,而有其内在的必然性。犹太文化传统中对卫生保健的重视,犹太人掌握多种语言的能力,为犹太人进入医学这一领域提供了先天的优势条件;中世纪西方在医学发展上的长期滞后,使得医术高超的犹太医生更容易脱颖而出;社会对医疗服务需求的增加,以及12世纪以后医生职业的日益世俗化,成为犹太人从医的一个良好契机;而医生职业在声望、地位上带来的诸多好处也对犹太人构成了极大的吸引力。

关键词：中世纪犹太人基督徒医生

Clinical Study on the Relationship between the HCG Levels during the Late Pregnancy and the Delivery Mechanism

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International Journal of Technology Management 2014年第3期 44-46页

作者： Xiaoli DU Jinrong gao Aijun QI Dongming ZHANG Fan YANG Huifang ZHU jianhong gao Zhen WANG People's Hospital of Langfang City HebeiChina Langfang Health Vocational College Hebei 065000 China

Objective： The relationship between the HCG levels during the late pregnancy and the delivery mechanism was discussed. Method： If the HCG levels during the late pregnancy were related to the delivery mechanism was studied by using the β -HCG changes of 100 women pregnant for 36 weeks, 37 weeks, 38 weeks, 39 weeks, 40 weeks, and 41 weeks, and also the [3 -HCG changes when their uterine orifice was opened for 3cm near the time of labor as the clinical data. All these cases were found to suffer no clinical complications. Result： The difference in HCG changes during the late pregnancy was of no statistical significance （P〉0.05）. Conclusion： The β-HCG levels change during the late pregnancy is not significantly correlated with the labor onset time, and the labor onset time is unpredictable with the monitoring of the HCG levels change during the late pregnancy.

关键词： Late Pregnancy β-HCG Levels Labor Onset Time

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低温送风空调系统焓湿图分析

暖通空调 2008年第7期38卷 93-97页

作者：王倩高建红茂名学院郑州大学综合设计研究院

分析了低温送风空调系统在新风直接引入和新风集中处理至室内空气状态点的等比焓线后引入空调机房两种情况下的空气处理过程,详细给出了空调器采用压出式风机配置时的焓湿图绘制步骤。介绍了采用不同末端型式的低温送风系统在冬、夏季... 详细信息

分析了低温送风空调系统在新风直接引入和新风集中处理至室内空气状态点的等比焓线后引入空调机房两种情况下的空气处理过程,详细给出了空调器采用压出式风机配置时的焓湿图绘制步骤。介绍了采用不同末端型式的低温送风系统在冬、夏季负荷变化时的调节方法并进行了焓湿图分析。

关键词：低温送风系统焓湿图分析空调器风机动力型末端装置低温风口

短纤维增强橡胶复合材料热应力及热-结构耦合的数值研究

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材料科学与工程学报 2018年第3期36卷 386-391,380页

作者：高剑虹陈佳彬泉州师范学院化工与材料学院福建泉州362000 黎明职业大学机电工程与自动化学院福建泉州362000

基于橡胶材料的非线性和不可压缩特性,建立细观数值模型,采用非线性有限元方法,在细观层面,通过对短纤维增强橡胶复合材料受热载荷和热-结构载荷时的应力传递分析,研究了温度对材料热弹性和失效形式的影响,探讨了对材料热应力影响的细... 详细信息

基于橡胶材料的非线性和不可压缩特性,建立细观数值模型,采用非线性有限元方法,在细观层面,通过对短纤维增强橡胶复合材料受热载荷和热-结构载荷时的应力传递分析,研究了温度对材料热弹性和失效形式的影响,探讨了对材料热应力影响的细观结构关键因素,揭示了材料的细观破坏机理。研究表明:当受热载荷时,界面处纤维受到的压应力加强了橡胶和纤维的粘合,而纤维的端部容易脱粘;材料受热-拉伸载荷时的应力是热应力及拉伸载荷产生应力的线性组合,且随着温度增大,界面脱粘失效的几率增大,纤维断裂失效的几率减小,温度的升高使复合材料的刚度急剧下降。

关键词：橡胶短纤维非线性有限元热应力有效模量

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VRML虚拟场景中实时交互动画的实现

苏州大学学报（工科版） 2008年第6期28卷 36-38页

作者：高建洪胡志华苏州科技学院土木工程学院江苏苏州215011

以Java与VRML结合为基础,讨论了Java程序和VRML场景的通信机理,论述了利用JavaApplet通过EAI在VRML场景中实现实时交互动画的方法,并给出了应用实例和关键代码。

关键词： VRML Java EAI 交互性