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Clinical Study on the Relationship between the HCG Levels during the Late Pregnancy and the Delivery Mechanism
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作者 Xiaoli DU Jinrong gao +5 位作者 Aijun QI Dongming ZHANG Fan YANG Huifang ZHU jianhong gao Zhen WANG 《International Journal of Technology Management》 2014年第3期44-46,共3页
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 s... 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. 展开更多
关键词 Late Pregnancy β-HCG Levels Labor Onset Time
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Constructing globally consecutive 3D conductive network using P-doped biochar cotton fiber for superior performance of silicon-based anodes 被引量:1
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作者 Jun Cao jianhong gao +6 位作者 Kun Wang Zhuoying Wu Xinxin Zhu Han Li Min Ling Chengdu Liang Jun Chen 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2024年第6期181-191,共11页
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... 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 improvement.Herein,silicon nanoparticles were innovatively composited with eco-friendly biochar sourced from cotton to fabricate a 3D globally consecutive conductive network.The network serves a dual purpose:enhancing overall electrode conductivity and serving as a scaffold to maintain electrode integrity.The 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 level.Moreover,first-principle calculations further validated that the rapid diffusion of Li^(+)is attributed to the tailored electronic microstructure and charge rearrangement of the fiber.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. 展开更多
关键词 3D conductive network Biochar carbon-silicon anode Heteroatoms doping strategy DFT calculation Lithium-ion battery
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Fault Line Detection Using Waveform Fusion and One-dimensional Convolutional Neural Network in Resonant Grounding Distribution Systems 被引量:7
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作者 jianhong gao Moufa Guo Duan-Yu Chen 《CSEE Journal of Power and Energy Systems》 SCIE CSCD 2021年第2期250-260,共11页
Effective features are essential for fault diagnosis.Due to the faint characteristics of a single line-to-ground(SLG)fault,fault line detection has become a challenge in resonant grounding distribution systems.This pa... Effective features are essential for fault diagnosis.Due to the faint characteristics of a single line-to-ground(SLG)fault,fault line detection has become a challenge in resonant grounding distribution systems.This 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 fusion.The compelling feature of fused waveforms is extracted by 1-D CNN to determine whether the fused waveform source contains the fault line.Then,the 1-D CNN output is used to update the value of the counter in order to identify the fault line.Given 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 detection.In addition,the proposed method owns fault-tolerant performance.Even if a few samples are misjudged,the fault line can still be detected correctly based on the full output results of 1-D CNN.Experimental results verified that the proposed method can work effectively under various fault conditions. 展开更多
关键词 Fault line detection one-dimensional convolutional neural network resonant grounding distribution systems waveform fusion
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Latest progress on fully non-fused electron acceptors for high-performance organic solar cells 被引量:1
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作者 jianhong gao Xiaodong Zhu +4 位作者 Hanyi Bao Jibao Feng Xiang gao Zhitian Liu Ziyi Ge 《Chinese Chemical Letters》 SCIE CAS CSCD 2023年第8期76-81,共6页
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 years.However,the major achievement come... 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 years.However,the major achievement comes from fused ring electron acceptors(FREAs)with complex structures,leading to high cost.Hence,it is urgent to design new materials to resolve the cost issues concerning basic commercial requirements of organic solar cells.Recently,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 cells.Therefore,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. 展开更多
关键词 Organic solar cells Fully non-fused electron acceptors Noncovalent interaction Power conversion efficiency Over 10%
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通过简单的亲核取代反应合成以三嗪为核心的苝二酰亚胺类高效非富勒烯受体
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作者 高翔 景文文 +7 位作者 王一诺 徐小鹏 张林骅 陈志力 文静 高建宏 彭强 刘治田 《Science China Materials》 SCIE EI CAS CSCD 2023年第6期2159-2168,共10页
贵金属催化剂被广泛用于合成高效的光伏材料.但是,昂贵的催化剂很难去除,而残留的催化剂有损于光伏性能.本工作不使用贵金属催化剂,通过简单的亲核取代反应合成了新型、高效的非富勒烯受体(NFAs).这一受体被命名为NAQ-3,获得了高达8.91... 贵金属催化剂被广泛用于合成高效的光伏材料.但是,昂贵的催化剂很难去除,而残留的催化剂有损于光伏性能.本工作不使用贵金属催化剂,通过简单的亲核取代反应合成了新型、高效的非富勒烯受体(NFAs).这一受体被命名为NAQ-3,获得了高达8.91%的能量转换效率(PCE).据我们所知,这是通过简单亲核取代反应或无贵金属催化制备的NFAs所报道的最高PCE值.此外,我们合成了一个四臂的NF A作为该合成方法的扩展应用示例,其核心为联三嗪,命名为NAQ-4.通过比较NAQ-3和NAQ-4的吸收光谱和能级结构、分析基于NAQ-3和NAQ-4的有机太阳能电池的光伏性能、激子解离过程和电荷复合机制,研究了该类NFAs的结构-性能关系.本论文报道了一个通过简单的亲核取代反应合成高效NFAs的成功范例. 展开更多
关键词 亲核取代反应 能级结构 贵金属催化剂 有机太阳能电池 三嗪 能量转换效率 光伏性能 光伏材料
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Effects of subtle change in side chains on the photovoltaic performance of small molecular donors for solar cells
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作者 Xiang gao Kuibao Yu +8 位作者 Yanjiao Zhao Tao Zhang Jing Wen Zifeng Liu Zhihao Liu Guofeng Ye jianhong gao Ziyi Ge Zhitian Liu 《Chinese Chemical Letters》 SCIE CAS CSCD 2022年第10期4659-4663,共5页
Small-molecule organic solar cells(SMOSCs)have attracted considerable attention owing to the merits of small molecules,such as easy purification,well-defined chemical structure.To achieve high-performance SMOSCs,the r... Small-molecule organic solar cells(SMOSCs)have attracted considerable attention owing to the merits of small molecules,such as easy purification,well-defined chemical structure.To achieve high-performance SMOSCs,the rational design of well-matched donor and acceptor materials is extremely essential.In this work,two new small molecular donor materials with subtle change in the conjugated side thiophene rings are synthesized.The subtle change significantly affects the photovoltaic performance of molecular donors.Compared 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 Y6.As a result,a improved PCE of 11.16% is obtained for MDJ:Y6 based SMOSCs.The results highlight the importance of fine-tuning the molecular structure to achieve high-performance SMOSCs. 展开更多
关键词 Organic solar cells Small molecular donor materials CHLORINATION MISCIBILITY Photovoltaic performance
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