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Journal of Energy Chemistry 2022年第5期31卷 293-299页

作者： Zhongquan Wan Yunpeng Zhang Jinyu Yang Jianxing Xia fangyan Lin Xiaojun Yao Junsheng Luo Chunyang Jia State Key Laboratory of Electronic Thin Films and Integrated Devices School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 610054SichuanChina State Key Laboratory of Applied Organic Chemistry Lanzhou UniversityLanzhou 730000GansuChina

Two extended hybrid conjugated systems based on a triphenylamine(TPA) core with two and three peripheral 1,4-dithiafulvenes(DTF) units coded WH-2 and WH-3 as hole-transporting materials(HTMs) applied in perovskite solar cells(PSCs) are synthesized by facile one-step reaction in good yield over 75%. DTF unit as electron donor can enhance the electron donating ability and the fusion of benzenic ring of TPA with DTF unit may lead to reinforced intermolecular interactions in the solid state. In addition,WH-2 and WH-3 exhibit a pyramid shape containing partial planarity and quasi three-dimensionality features, which is also conducive to enhancing the π-π stacking of molecules in the solid state. The above-mentioned structural characteristics make the two HTMs have good hole mobilities. As a result,WH-2 and WH-3 obtained the high intrinsic hole mobilities of 4.69 × 10^(-4)and 2.18 × 10^(-3)cm^(2)V^(-1)s^(-1)respectively. Finally, the power conversion efficiencies(PCEs) of PSCs with WH-2 and WH-3 as cost-effective dopant-free HTMs are 15.39% and 19.22% respectively and the PCE of PSC with WH-3 is on a par with that of PSC with Li-TFSI/t-BP doped Spiro-OMe TAD(19.67%).

关键词： Perovskite solar cells Hole-transporting materials Hybrid conjugated systems Triphenylamine 1 4-Dithiafulvenes

A safe,low-cost and high-efficiency presodiation strategy for pouch-type sodium-ion capacitors with high energy density

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Journal of Energy Chemistry 2022年第1期31卷 442-450,I0012页

作者： Congkai Sun Xiong Zhang Chen Li Kai Wang Xianzhong Sun fangyan Liu Zhong-Shuai Wu Yanwei Ma Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190China School of Engineering Sciences University of Chinese Academy of SciencesBeijing 100049China Stare Key Laboratory of Catalysis.Dalian Institute of Chemical Physics Chinese Academy of SciencesDalianLiaoning 116023China Dalian National Laboratory for Clean Energy Chinese Academy of SciencesDalianLiaoning 116023China

Sodium-ion capacitors(SICs)have attracted appreciable attention in virtue of the higher energy and power densities compared with their rivals,supercapacitors and sodium-ion *** to the lack of sodium resources in cathode,presodiation is critical for SICs to further augment ***,current presodiation strategy utilizes metallic sodium as the presodiation *** this strategy,assembling/disassembling of half-cells is required,which is dangerous and in creases the time and cost of SIC leading to the restriction of their industrialization and *** we present a safe,low-cost and high-efficiency presodiation strategy by first employing Na_(2)C_(2)O_(4) as the sacrificial salt applied in ***_(2)C_(2)O_(4) is environmentally friendly and possesses considerably low *** additional residues remain after sodium extraction ascribed to its"zero dead mass"*** paired with commercial activated carb on as the cathode and commercial hard carbon as the ano de,the constructed pouch-type SICs exhibit high energy and power densities of 91.7 Wh/kg and 13.1 kW/kg,*** work shows a prospect of realizing the safe and low-cost manufacturing for high-performance SICs commercially.

关键词： Presodiation material Sacrificial salt High efficiency Zero dead mass Sodium-ion capacitors Lithium-ion capacitors

Nitrogen-doped holey graphene nanoscrolls for high-energy and high-power supercapacitors

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Chinese Chemical Letters 2021年第2期32卷 914-917页

作者： Feng Su Shuanghao Zheng fangyan Liu Xiong Zhang Fangyuan Su Zhong-Shuai Wu Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing J00049China Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190China CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China Dalian National Laboratory for Clean Energy Chinese Academy of SciencesDalian 116023China

Porous structure and heteroatom doping are two key parameters for significantly boosting the capacitive performance of graphene-based ***,we report a facile approach to prepare onedimensional(ID) nitrogen-doped holey graphene nanoscrolls(NHGNSs) through cold quenching treatment of two-dimensional graphene oxide sheets,followed by thermal annealing in the successive atmosphere of NH3 and *** from the synergy of the unique 1D tubular morphology,abundant nanoholes and nitrogen doping,the NHGNSs exhibit a high specific capacitance of 126 F/g at 1 A/g in ionic liquid electrolyte and excellent rate capability with 81% of the capacitance retained at 20 A/***,the fabricated symmetric supercapacitors based on NHGNSs achieve both high energy density of 53.5 Wh/kg at 875 W/kg and high power density of 17.5 kW/kg at 43.4 Wh/*** simple synthetic process and superior electrochemical performance suggest the great potential of NHGNSs for supercapacitor application.

关键词： Graphene nanoscrolls Nitrogen doping Holey grapheme Supercapacitors Ionic liquid

Recent advances in carbon nanostructures prepared from carbon dioxide for high-performance supercapacitors

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Journal of Energy Chemistry 2021年第3期30卷 352-367页

作者： Chen Li Xiong Zhang Kai Wang Fangyuan Su Cheng-Meng Chen fangyan Liu Zhong-Shuai Wu Yanwei Ma Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190China School of Engineering Sciences University of Chinese Academy of SciencesBeijing 100049China CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001ShanxiChina Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

The burgeoning global economy during the past decades gives rise to the continuous increase in fossil fuels consumption and rapid growth of CO_(2) emission,which demands an urgent exploration into green and sustainable devices for energy storage and power *** based on activated carbon electrodes are promising systems for highly efficient energy harvesting and power supply,but their promotion is hindered by the moderate energy density compared with ***,scalable conversion of CO_(2) into novel carbon nanostructures offers a powerful alternative to tackle both issues:mitigating the greenhouse effect caused by redundant atmospheric CO_(2) and providing carbon materials with enhanced electrochemical *** this tutorial review,the techniques,opportunities and barriers in the design and fabrication of advanced carbon materials using CO_(2) as feedstock as well as their impact on the energy-storage performances of supercapacitors are critically *** particular,the chemical aspects of various Cv2 conversion reactions are highlighted to establish a detailed understanding for the science and technology involved in the microstructural evolution,surface engineering and porosity control of CO_(2)-converted carbon ***,the prospects and challenges associated with the industrialization of CO_(2) conversion and their practical application in supercapacitors are also discussed.

关键词： Carbon materials Supercapacitors CO_(2)conversion Nanostructures

An improved automatic detection method for earthquake-collapsed buildings from ADS40 image

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Chinese Science Bulletin 2009年第18期54卷 3303-3307页

作者： GUO HuaDong LU LinLin MA JianWen PESARESI Martino YUAN fangyan Center for Earth Observation and Digital Earth (CEODE) Chinese Academy of Sciences Beijing 100190 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Institute for the Protection and Security of the Citizen (IPSC) European Commission Joint Research Center Ispra (Varese) 21027Italy

Earthquake-collapsed building identification is important in earthquake damage assessment and is evidence for mapping seismic intensity. After the May 12th Wenchuan major earthquake occurred, experts from CEODE and IPSC collaborated to make a rapid earthquake damage assessment. A crucial task was to identify collapsed buildings from ADS40 images in the earthquake region. The difficulty was to differentiate collapsed buildings from concrete bridges, dry gravels, and landslide-induced rolling stones since they had a similar gray level range in the image. Based on the IPSC method, an improved automatic identification technique was developed and tested in the study area, a portion of Beichuan County. Final results showed that the technique’s accuracy was over 95%. Procedures and results of this experiment are presented in this article. Theory of this technique indicates that it could be applied to collapsed building identification caused by other disasters.

关键词：地震烈度建筑物自动检测方法倒塌自动识别技术地球形象图像灰度

Chelation of lithium ion with crown ether for eliminating adverse effects caused by Li-TFSI/tBP doping system in Spiro-OMeTAD

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Journal of Energy Chemistry 2022年第11期31卷 489-496,I0013页

作者： Zhongquan Wan Hui Lu Jinyu Yang Yunpeng Zhang fangyan Lin Jianxing Xia Xiaojun Yao Junsheng Luo Chunyang Jia State Key Laboratory of Electronic Thin Films and Integrated Devices School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 610054SichuanChina Shenzhen Institute for Advanced Study University of Electronic Science and Technology of ChinaShenzhen 518110GuangdongChina State Key Laboratory of Applied Organic Chemistry Lanzhou UniversityLanzhou 730000GansuChina

Lithium bis(trifluoromethanesulfonyl)imide(Li-TFSI)/4-tert-butylpyridine(tBP)is a classic doping system for the hole transport material Spiro-OMeTAD in typical n-i-p structure perovskite solar cells(PSCs),but this system will cause many problems such as high hygroscopicity,Li+migration,pinholes and so on,which hinder PSC from maintaining high efficiency and stability for *** this work,an effective strategy is demonstrated to improve the performance and stability of PSC by replacing t BP with *** chelation of 12-crown-4 with Li+not only improves the doping effect of Li-TFSI,but also perfectly solves the problems caused by the Li-TFSI/tBP *** PSC based on this strategy achieved a champion power conversion efficiency(PCE)over 21%,which is significantly better than the pristine device(19.37%).More importantly,the without encapsulated device based on Li-TFSI/12-crown-4 still maintains 87%of the initial PCE even after 60 days exposure in air,while the pristine device only maintains 22%of the initial PCE under the same aging *** strategy paves a novel way for constructing efficient and stable PSCs.

关键词： Perovskite solar cells Spiro-OMeTAD Li-TFSI dopant 12-Crown-4 Chelation

小儿法洛四联症根治术后机械通气时间延长的风险因素分析及列线图的构建

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联勤军事医学 2024年第1期38卷 44-48页

作者：史爱国卞兰铮李明兄马方艳南京医科大学附属儿童医院心胸外科江苏南京210008

目的探讨小儿法洛四联症根治术后机械通气时间延长的风险因素,并构建列线图。方法将2021-02/2023-01月在作者医院接受四联症矫正术治疗的117例法洛四联症患儿纳入本研究,根据术后是否发生机械通气时间延长分为延长组(n=29)和非延长组(n=... 详细信息

目的探讨小儿法洛四联症根治术后机械通气时间延长的风险因素,并构建列线图。方法将2021-02/2023-01月在作者医院接受四联症矫正术治疗的117例法洛四联症患儿纳入本研究,根据术后是否发生机械通气时间延长分为延长组(n=29)和非延长组(n=88)。收集患儿临床资料,经单因素及多因素Logistic回归分析探讨法洛四联症根治术后机械通气时间延长的影响因素;绘制预测机械通气时间延长的列线图,并采用受试者工作特征(receiver operating characteristic curve,ROC)曲线评估列线图的预测价值。结果117例患儿行法洛四联症根治术后共有29例(24.79%)发生机械通气时间延长。延长组患儿体质量、身高、血氧饱和度(oxygen saturation,SpO_(2))小于非延长组,有体肺动脉侧枝占比、有肺动脉狭窄占比、McGoon比值<1.5占比、C-反应蛋白(C-reactive protein,CRP)水平、体外循环时间、有再次插管占比、重症加强护理病房(intensive care unit,ICU)滞留时间、住院天数大于非延长组(P均<0.05)。多因素Logistic回归分析显示,体质量<9.68 kg[OR=2.063,95%置信区间(confidence interval,CI):1.461~2.912]、有体肺动脉侧枝(OR=2.646,95%CI:1.743~4.017)、McGoon比值<1.5(OR=2.259,95%CI:1.545~3.304)、术前SpO_(2)<94%(OR=2.790,95%CI:1.827~4.260)、体外循环时间≥113 min(OR=3.435,95%CI:2.113~5.585)是法洛四联症根治术后患儿机械通气时间延长的危险因素(P<0.05)。构建预测小儿法洛四联症根治术后机械通气时间延长的列线图,C-index为0.746(95%CI:0.694~0.789)。ROC曲线对小儿法洛四联症根治术后机械通气时间延长列线图的预测价值结果显示,曲线下面积(area under the curve,AUC)为0.768,特异度为71.24%,灵敏度为77.49%(Z=10.237,P<0.05)。结论基于体质量、体肺动脉侧枝、McGoon比值、术前SpO_(2)、体外循环时间构建的列线图对小儿法洛四联症根治术后机械通气时间延长的发生风险具有较高的预测价值。

关键词：法洛四联症机械通气时间风险因素列线图

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基于CNN的互感器多参数在线检测系统设计

仪器仪表用户 2024年第3期31卷 42-44页

作者：孙军贾芳艳胡利峰曾园园陈江洪武汉磐电科技股份有限公司

互感器是电力系统中的关键设备，主要用于测量和保护。然而，在长期运行过程中，互感器容易受到环境、温度、湿度等多种因素的影响，导致其性能下降，甚至发生故障。为了保证互感器的正常运行，需要对互感器进行实时监测和故障诊断。传... 详细信息

互感器是电力系统中的关键设备，主要用于测量和保护。然而，在长期运行过程中，互感器容易受到环境、温度、湿度等多种因素的影响，导致其性能下降，甚至发生故障。为了保证互感器的正常运行，需要对互感器进行实时监测和故障诊断。传统的互感器监测方法主要依赖于人工经验，效率低下且容易误诊，故提出基于卷积神经网络（后简写为CNN）的互感器多参数在线检测系统，通过实时采集互感器的关键参数，结合CNN强大的特征提取和分类能力，实现对互感器状态的实时监测和故障诊断。

关键词：互感器卷积神经网络多参数在线检测故障诊断

医学检验实验室应用西格玛度量值建立适当的室内质控方案

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湖南师范大学学报（医学版） 2024年第2期21卷 139-142,164页

作者：焦芳艳张裕邹国英蒋卫平徐飞湖南省脑科医院/湖南省第二人民医院长沙410007 湖南省临床检验中心长沙410007

目的:为避免在设计室内质控方案时可能出现的控制不足或过度控制,为医学检验实验室建立一套基于临界西格玛度量值且满足质控性能目标的适当室内质控方案。方法:利用质控软件和办公软件,计算系统误差从0至4.50 s时,常用质控方案的误差检... 详细信息

目的:为避免在设计室内质控方案时可能出现的控制不足或过度控制,为医学检验实验室建立一套基于临界西格玛度量值且满足质控性能目标的适当室内质控方案。方法:利用质控软件和办公软件,计算系统误差从0至4.50 s时,常用质控方案的误差检出概率和假失控概率,并以此绘制西格玛度量值图和标准化操作过程规范图。结果:分析得出在使用1~3个浓度水平质控物时,满足90%误差检出概率及小于5%的假失控概率时的临界西格玛度量值,以及此时适合的质控方案,并绘制出达到90%分析质量保证时的标准化操作过程规范图。结论:基于临界西格玛度量值的室内质控方案可有效保证医学检验实验室质控方案的误差检出概率并维持较低的假失控概率,防止控制不足或过度控制;不建议使用一个浓度水平质控物,因其不利于质控规则的使用和无法提供中低西格玛检验水平项目的质量保证。

关键词：医学检验实验室西格玛度量值图操作过程规范图室内质控

肝移植术后机械通气时间延长的危险因素及预后分析

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浙江医学教育 2024年第3期23卷 181-187页

作者：王华芬卢芳燕董丽禹宁娜郑力浙江大学医学院附属第一医院护理部杭州310003 浙江大学医学院附属第一医院肝胆胰外科杭州310003

目的探讨肝移植术后机械通气时间延长的危险因素及其对患者预后的影响。方法采用病例对照研究方法,回顾性收集2018年1月—2021年12月在浙江大学医学院附属第一医院进行肝移植术的654例住院患者的相关资料,分析其术后机械通气时间延长... 详细信息

目的探讨肝移植术后机械通气时间延长的危险因素及其对患者预后的影响。方法采用病例对照研究方法,回顾性收集2018年1月—2021年12月在浙江大学医学院附属第一医院进行肝移植术的654例住院患者的相关资料,分析其术后机械通气时间延长的独立危险因素。结果纳入本研究的654例肝移植术后患者中,有169例患者发生机械通气时间延长,发生率为25.84%。Logistic回归分析结果显示,终末期肝病模型(model for end-stage liver disease, MELD)评分高(OR:1.083,95%CI:1.058~1.110),美国麻醉医师协会(American Society of Anesthesiologists, ASA)分级>3级(OR:1.657,95%CI:1.065~2.576),术中出血量>1 250 mL(OR:5.559,95%CI:3.647~8.471),术中尿量≤800 mL(OR:2.026,95%CI:1.331~3.082)是肝移植术后发生机械通气时间延长的独立危险因素。结论临床医护人员需要重点关注MELD评分较高、ASA分级>3级、术中出血量>1 250 mL、术中尿量≤800 mL的患者,早期采取针对性的干预措施,以缩短肝移植患者术后机械通气时间,促进患者早期康复。

关键词：肝移植机械通气时间延长危险因素预后分析