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内镜碘染色、颜色定量分析及放大内镜窄带成像技术联合检查在早期食管癌诊断中的效能

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中国民康医学 2025年第1期37卷 138-140,147页

作者：李腾飞江阴市人民医院南通大学附属江阴医院消化内科江苏无锡214400

目的:观察内镜碘染色、颜色定量分析及放大内镜窄带成像技术(ME-NBI)联合检查在早期食管癌诊断中的效能。方法:回顾性分析2020—2023年江阴市人民医院收治的86例疑似早期食管癌患者的临床资料,均行内镜碘染色、颜色定量分析及MENBI检查... 详细信息

目的:观察内镜碘染色、颜色定量分析及放大内镜窄带成像技术(ME-NBI)联合检查在早期食管癌诊断中的效能。方法:回顾性分析2020—2023年江阴市人民医院收治的86例疑似早期食管癌患者的临床资料,均行内镜碘染色、颜色定量分析及MENBI检查,以病理检查结果作为“金标准”,统计三种方法单项及联合检查诊断早期食管癌的结果,分析其与病理检查结果的一致性,比较三种方法单项及联合检查在早期食管癌诊断中的效能。结果:病理检查结果显示,86例疑似早期食管癌患者中,阳性26例,阴性60例;内镜碘染色检查诊断阳性26例,阴性60例,与病理检查结果的一致性较差(Kappa=0.338);颜色定量分析检查诊断阳性27例,阴性59例,与病理检查结果的一致性一般(Kappa=0.427);ME-NBI检查诊断阳性25例,阴性61例,与病理检查结果的一致性一般(Kappa=0.526);联合检查阳性31例,阴性55例,与病理检查结果的一致性较高(Kappa=0.764);联合检查诊断早期食管癌的准确度均高于内镜碘染色、颜色定量分析检查,灵敏度、阴性预测值均高于内镜碘染色、颜色定量分析及ME-NBI检查,差异有统计学意义(P0.05)。结论:内镜碘染色、颜色定量分析及ME-NBI联合检查在早期食管癌诊断中的效能高于三者单项检查诊断。

关键词：内镜碘染色颜色定量分析放大内镜窄带成像技术早期食管癌诊断

High-performance visible-infrared broadband transparent copper mesh conductor and applications for electromagnetic shielding and heating

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Science China Materials 2025年第2期68卷 421-431页

作者： tengfei li Xiaolian Chen Zhaohua Xu Shuhong Nie Wenya Xu Wei Yuan Su Xu Shuo Zhang Fangfang Pei Wenming Su Zheng Cui School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China Printable Electronics Research Center Nano-Devices and Materials DivisionSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China

Transparent conductors(TCs)have widespread applications in the fields of modern photodetectors and smart *** TCs for visible wavelengths have seen significant advancements,the development of visible-infrared(vis-IR)broadband TCs for infrared is still a daunting challenge due to the trade-off between infrared transparency and ***,we present a vis-IR TC fabricated by using a damage-free indirect transfer *** method involves polymer-mediated bonding of a high-resolution,standalone copper(Cu)mesh onto infrared or visible substrates via a transfer *** obtained Cu mesh TC exhibits excellent conductivity with a sheet resistance as low as 0.06Ω/□,as well as 81%transmittance at a visible wavelength of 550 nm and 65%transmittance at an IR wavelength of 10μ***,a specially developed bonding strategy ensures the longterm reliability of the Cu mesh TC in harsh *** Cu mesh TC can be applied in both heating and electromagnetic(EM)*** a transparent heater,it reaches approximately 100℃ at an applied voltage of 1.2 V within 100 *** EM shielding,a demonstration using a stainlesssteel box with a transparent observation window which is integrated with the Cu mesh shows that while the window allows both optical and IR observations,the 4G signals(8.2 GHz)of a smartphone inside the box are effectively blocked.

关键词： infrared visible transparent conductors electromagnetic shielding Cu mesh

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Thick Active-Layer Organic Solar Cells

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Chinese Journal of Chemistry 2023年第24期41卷 3739-3750页

作者： Zesheng liu tengfei li Yuze lin Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190 China University of Chinese Academy of Sciences Beijing100049 China

Organic solar cells(OSCs)present a promising renewable energy technology due to their cost-effectiveness,adaptability,and lightweight *** advent of non-fullerene acceptors has further boosted their significance,allowing for power conversion efficiencies surpassing 19%even with an active layer thickness of about 100 ***,in order to achieve large scale production,it is necessary to fabricate OSCs with thicker active layers exceeding 300 nm that are compatible with large-area printing ***,OSCs with thick active layers have inferior performance compared to those with thin active *** expedite the transition of OSCs from laboratory to industrial high-throughput manufacturing,considerable efforts have been made to comprehend the performance limitations of thick active-layer OSCs,develop novel photoactive materials that are high-performance and tolerant towards the thickness of the active layer,and optimize the morphology of the photoactive layer and device *** review aims to provide a comprehensive summary of the mechanisms that lead to efficiency loss in thick active-layer OSCs,the representative works on molecular design,and the optimization strategies for high-performance thick active-layer OSCs,and the remaining challenges that must be addressed.

关键词： Organic solar cells Charge transport Charge extraction and recombination Thick active layer Energy loss

基于AHP-CRITIC综合加权法结合Box-Behnken设计-响应面法优选建曲发酵工艺

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中草药 2025年第3期56卷 785-794页

作者：陈祥宁程世云李腾飞程显隆刘军玲俞年军安徽中医药大学药学院安徽省食品药品检验研究院国家药监局中药质量研究与评价重点实验室安徽省万生中药饮片有限公司中国食品药品检定研究院

目的优选建曲发酵工艺，为建曲发酵的规范化生产提供参考依据。方法以橙皮苷、柚皮素、橙皮素、醇溶性浸出物含量、糖化酶活力及外观性状为评价指标，对炮制过程的发酵时间、发酵温度、相对湿度（relative humidity,RH）进行考察，通... 详细信息

目的优选建曲发酵工艺，为建曲发酵的规范化生产提供参考依据。方法以橙皮苷、柚皮素、橙皮素、醇溶性浸出物含量、糖化酶活力及外观性状为评价指标，对炮制过程的发酵时间、发酵温度、相对湿度（relative humidity,RH）进行考察，通过AHP-CRITIC综合加权法确定各评价指标的权重系数，联合单因素实验与Box-Behnken设计-响应面法，以综合评分作为评价指标，优选最佳发酵工艺参数。结果 AHP-CRITIC综合赋权法确定的橙皮苷、柚皮素、橙皮素、醇溶性浸出物含量及糖化酶活力和外观性状的权重系数分别为0.070 2、0.107 1、0.078 0、0.058 5、0.235 4、0.450 8；优选的建曲发酵工艺为将处方中各中药细粉、麦麸与面粉稀糊揉合均匀并压制成块后，置发酵箱内，在发酵温度35℃、RH 80%条件下连续发酵23 h。平行3次的验证试验综合评分均值为87.889，与预测值的相对偏差为1.07%，且各质量指标的RSD均小于3.0%。结论采用响应面法建立的模型科学准确，优选的建曲发酵工艺稳定可行，可为以建曲为代表的发酵类中药规范化生产和质量标准提高提供参考依据。

关键词：建曲发酵工艺 AHP-CRITIC混合加权法 Box-Behnken设计-响应面法橙皮苷柚皮素橙皮素酶活力

To Maximize Luminescence for an Efficient Organic Solar Cell

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Chinese Journal of Chemistry 2024年第23期42卷 3157-3168页

作者： Yifei Geng tengfei li Zhenzhen Zhang Yuze lin Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academyof SciencesBeijing 100190China University of Chinese Academyof Sciences Beijing 100049China

With the continuous development of photovoltaic materials,organic solar cells(OSCs)have made remarkable advancements,surpassing a power conversion efficiency(PCE)of 20%.However,the PCEs of OSCs remain lower than that of inorganic solar cells due to significant energy losses,mainly stemming from the relatively large non-radiative recombination losses(usually be expressed as∆E3),resulting in low open-circuit *** can be achieved by reducing non-radiative recombination,and hereby increasing the electroluminescence quantum efficiency(EQE_(EL))of the photo-active *** review analyzes the significance of luminescence efficiency in achieving high-performance OSCs by examining the reciprocal relationship between∆E3 and EQE_(EL).High-efficiency organic solar cells can also be used as effective organic light-emitting diodes(OLEDs).The discussion provides insights into the influencing factors of EQE_(EL)and the mechanisms for adjusting various parameters,which include enhancements in photoluminescence quantum yield and the proportion of radiative *** objective is to offer insights into the crucial role of luminescence performance in OSC development,guiding researchers toward developing novel photovoltaic materials or optimization strategies to enhance the luminescence performance of the active layer in OSCs,fostering the simultaneous advancement of OSCs and OLEDs.

关键词： Organic solar cell Energy loss Electroluminescence quantum efficiency Photoluminescence quantum yield Non-radiativerecombination

Effects of Thieno[3,2-b]thiophene Number on Narrow-Bandgap Fused-Ring Electron Acceptors

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Chinese Journal of Polymer Science 2022年第8期40卷 914-920,I0008页

作者： tengfei li Guilong Cai Yuze lin Xinhui Lu Xiaowei Zhan Key Laboratory of Polymer Chemistry and Physics of Ministry of Education School of Materials Science and EngineeringPeking UniversityBeijing100871China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China Department of Physics The Chinese University of Hong KongHong Kong999077China

We synthesize and compare four near-infrared absorbing fused-ring electron acceptors named as nTTIC(n=2,3,4,and 5),based on different number of thieno[3,2-b]thiophene(TT)unit as the electron-donating *** increasing the TT unit,absorption spectrum of the TTIC series red shifts,and the highest occupied molecular orbital(HOMO)upshifts *** is worth noting that 4TTIC and 5TTIC exhibit absorption edges approaching 1100 nm,which is the photoresponse limit of solar cells based on crystal *** the TTIC series acceptors are blended with polymer donor PM6,the binary-blend organic solar cells based on 3TTIC show the best power conversion efficiency(PCE)of 13.1%.In contrast,2TTIC-based devices exhibit relatively lower PCE of 8.32%,mainly caused by the larger energy loss and blue-shifted *** to insufficient driving force of charge separation caused by very high HOMO,4TTIC and 5TTIC show poor PCEs lower than 3%.

关键词： Thieno[3,2-b]thiophene Near-infrared absorption Fused-ring electron acceptor Nonfullerene Organic solar cell

Application of Functionalized N,S-Ketene Acetals Microwave- Assisted Three-Component Domino Reaction for Rapid Direct Access to Imidazo[1,2-a]pyridines

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Chinese Journal of Chemistry 2013年第8期31卷 1033-1038页

作者： li, Ming li, tengfei Zhao, Kelong Wang, Mingda Wen, lirong Qingdao Univ Sci & Technol Coll Chem & Mol Engn Qingdao 266042 Shandong Peoples R China

Imidazo[1,2-a]pyridines have been successfully synthesized in moderate to good yields via a tandem three- component reaction of ethyl 2-（3-oxo-3-arylpropanethioamido）acetates with aromatic aldehydes and malononitrile by means of microwave irradiation using DABCO as the catalyst. The advantages of this method including high chemo- and regioselectivity make this new strategy highly attractive.

关键词： imidazo[1,2-a]pyridines N,S-ketene acetals multicomponent reaction domino reaction microwaveirradiation

Unique NiFe–NiCoO2 hollow polyhedron as bifunctional electrocatalysts for water splitting

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Journal of Energy Chemistry 2019年第6期28卷 74-80页

作者： Rong Shi Jiaxin Wang Zhi Wang tengfei li Yu-Fei Song State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology

It is of significance to design of stable and cost-effective electrocatalyst for water splitting with high efficiency in an alkaline *** major obstacles for practical application of water splitting devices are lack of high-efficiency and low-cost electrocatalysts with low overpotential for both HER and *** this paper,we report a NiFe alloy decorated NiCoO2 hollow polyhedron(denoted as Ni Fe–Ni Co O2)by using[NiFe(CN)6]- intercalated NiCo–LDH as *** evidenced by the electrochemical active surface area,the resultant Ni Fe–Ni Co O2 composite shows unique hollow nanostructure,which can not only provide abundant mass transport channels,but also increase the contact area of the NiFe–Ni Co O2 material with the *** overpotential(η)demand is 286 mV for OER and 102 mV for HER at the current density of 10 mA/cm2 in an alkaline medium of 1 M KOH for the NiFe/NiCoO2 *** work provides a new pathway for preparation of the highly efficient bifunctional electrocatalysts for water splitting.

关键词： Layered double hydroxides (LDHs) Hollow polyhedron Water splitting

Gas Generation from Coal and Coal-Measure Mudstone Source Rocks of the Xujiahe Formation in the Western Sichuan Depression,Sichuan Basin

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Journal of Earth Science 2023年第4期34卷 1012-1025页

作者： Zijin Wu tengfei li Sui Ji Qin Zhou Hui Tian State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China CAS Center for Excellence in Deep Earth Science Guangzhou 510640China

The Triassic and Jurassic tight sandstone gas in the western Sichuan depression,Sichuan Basin has attracted much attention in recent years,and the Upper Triassic coal-bearing Xujiahe Formation is believed to be the major source ***,there are relatively few studies on the carbon isotopic heterogeneity of methane generated from coal-measure source rocks and the origin of the natural gases in Xinchang Gas Field is still *** this study,one coal-measure mudstone sample and one coal sample of the Xujiahe Formation in western Sichuan Basin were selected for gold tube pyrolysis experiment to determine their gas generation *** extrapolation of gas generation and methane carbon isotope fractionation parameters reveals that the main gas generation stage of Xujiahe Formation ranges from Late Jurassic to Cretaceous in the Xinchang Gas *** natural gas in the 5th member of Xujiahe Formation in Xinchang Gas Field is mainly derived from the 5th member of Xujiahe Formation itself,i.e.,self-generation and self-reservoir,however,the gas in the Jurassic gas pools is mainly derived from the source rocks of the 3rd member of Xujiahe Formation rather than the 5th member of Xujiahe Formation.

关键词： western Sichuan Basin coal coal-measure mudstone Xujiahe Formation kinetics of methane carbon isotope fractionation.