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第八届全国优秀青年气象科技工作者学术研讨会

作者： S.J.fan q.fan W.Yu X.Y.Luo B.M.Wang L.L.Song K.L.Leong Department of Atmospheric Sciences Sun yat-sen University Climate Center of Guangdong Province

As part of the PRIDE-PRD2006 intensive campaign, atmospheric boundary layer(ABL) measurements were performed in qingyuan, Panyu, and Xinken over the Pearl River Delta(PRD) on 1–30 July 2006. During the summer, the surface winds over the PRD are generally controlled by the south, usually with vertical wind shear at a height of approximately 800 m. Subsidence and precipitation from a tropical cyclone affects the air quality of the PRD. Under subsidence, wind speed in the ABL and the height of the ABL decrease and result in high-level concentrations. When the background wind speed is small or calm, the wind profile in Panyu and Xinken changes dramatically with height,which is perhaps caused by local circulation, such as sealand breezes. To better understand the ABL of the PRD,simulations that used the Weather Research and Forecasting(WRF) mesoscale model were utilized to analyze the ABL characteristics over the PRD. Based on three types of weather condition simulations(i.e., subsidence days, rainy days, and sunny days), the WRF model revealed that the simulated temperature and wind fields in these three cases were moderately consistent with the measurements. The results showed that diurnal variations of the ABL height on subsidence days and sunny days were obvious, but diurnal variations of the ABL height on rainy days were not *** ABL is obviously affected by local circulation, and the ABL features are different at various stations. A simulation focused on a high pollution episode during the subsidence days on 12–15 July 2006, occurred under high-pressure conditions, accompanied by the tropical cyclone "Bilis". A comparison of the simulated vertical wind fields and temperature structure with the ABL measurements at Xinken, Panyu, and qingyuan stations found that the modeled and measured atmospheric fields revealed two different types of ABL characteristics over the PRD. When the surface winds over the PRD were light or nearly calm, the local circulation domin

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真空冷喷涂技术制备塑料染料敏化太阳能电池中TiO_2散射层及其性能表征

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热喷涂技术 2014年第2期6卷 66-72,56页

作者： X.-L.He G.-J.Yang C.-X.Li C.-J.Li S.-q.fan 程旭莹 State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong UniversityXi'an Shaanxi China The University of queensland QLD Australia

塑料染料敏化太阳能电池（DSC）由于其质量轻、形状灵活可变、适用于低成本的连续式生产而成为一种很有发展前景的光化学太阳能电池。为了提高电池的效率,在室温下用真空冷喷涂技术将亚微米级制备在TiO2纳米晶体层表面形成一层光散射层... 详细信息

塑料染料敏化太阳能电池（DSC）由于其质量轻、形状灵活可变、适用于低成本的连续式生产而成为一种很有发展前景的光化学太阳能电池。为了提高电池的效率,在室温下用真空冷喷涂技术将亚微米级制备在TiO2纳米晶体层表面形成一层光散射层。通过研究光散射层的影响以及散射层与纳米晶TiO2层的结合以理解电池效率提高的原因。为了对比,使用乙醇中添加亚微米级Al2O3或TiO2颗粒形成的悬浮液,采用溅射沉积法,制备出两种散射层。结果显示,所有三种散射层对光的反射能力均强于TiO2纳米晶体层。无照电流结果表明NC＋VCSTiO2电池的散射层与TiO2纳米晶体层连接比另外两对组合更有效。因此,由吸附在散射层粒子表面的分子所决定的光诱导电子可以有效转移到TiO2纳米晶体层,并最终输出到外电流回路。假设由于散射效应电池效率提升13%,那么散射层与TiO2纳米晶体层层之间的良好结合贡献10%,最终导致使用NC＋VCS-TiO2散射层的塑料染料敏化太阳能电池效率提升～23%。此外,NC＋VCS-TiO2散射层的抗弯性能优于NC＋SD-TiO2和NC＋SD-Al2O3电池。

关键词：真空冷喷涂塑料染料敏化太阳能电池光散射层光电性能

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MRI在输卵管异位妊娠早期诊断中的作用

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国际医学放射学杂志 2016年第5期 580-580页

作者： M.J.Si S.Gui q.fan H.X.Han q.q.Zhao Z.X.Li 杨先春 Department of Radiology Shanghai No.9 HospitalAffiliated to Shanghai Jiao Tong University School of Medicine

摘要目的探讨MRI在输卵管异位妊娠(EP)早期诊断中的作用。方法回顾性分析27例EP临床及MRI表现。结果所有病例均显示子宫一侧厚壁妊娠囊(GS)样结构。T2WI上其厚壁呈典型三环征者22例(81%),其中17例(63%)壁内见小血管、6例(33%)壁内少许... 详细信息

摘要目的探讨MRI在输卵管异位妊娠(EP)早期诊断中的作用。方法回顾性分析27例EP临床及MRI表现。结果所有病例均显示子宫一侧厚壁妊娠囊(GS)样结构。T2WI上其厚壁呈典型三环征者22例(81%),其中17例(63%)壁内见小血管、6例(33%)壁内少许新鲜出血。囊内容物呈非单纯积液者占26%、实性乳头状成分者占56%、新鲜

关键词：输卵管异位妊娠早期诊断 MRI

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Data-Driven Fault Detection of Multiple Open-Circuit Faults for MMC Systems Based on Long Short-Term Memory Networks

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1563-1574页

作者： Chenxi fan Kaishun Xiahou Lei Wang q.H.Wu School of Electric Power Engineering South China University of TechnologyGuangzhou 510641China

This paper presents a long short-term memory(LSTM)-based fault detection method to detect the multiple open-circuit switch faults of modular multilevel converter(MMC)systems with full-bridge sub-modules(FB-SMs).Eighteen sensor signals of grid voltages,grid currents and capacitance voltages of MMC for single and multi-switch faults are collected as sampling *** output signal characteristics of four types of single switch faults of FB-SM,as well as double switch faults in the same and different phases of MMC,are analyzed under the conditions of load variations and control command changes.A multi-layer LSTM network is devised to deeply extract the fault characteristics of MMC under different faults and operation conditions,and a Softmax layer detects the fault *** results have confirmed that the proposed LSTM-based method has better detection performance compared with three other methods:K-nearest neighbor(KNN),naive bayes(NB)and recurrent neural network(RNN).In addition,it is highly robust to model uncertainties and Gaussian *** validity of the proposed method is further demonstrated by experiment studies conducted on a hardware-in-the-loop(HIL)testing platform.

关键词： Fault detection long short-term memory(LSTM) modular multilevel converter(MMC) open circuit fault

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Clinicopathologic study of primary intestinal B cell malignantlymphoma

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World Journal of Gastroenterology 1999年第6期5卷 538-540页

作者： Zhou q Xu TR fan qH Zhen ZX Nanjing Med Univ Affiliated Hosp 1 Dept Pathol Nanjing 210029 Jiangsu Prov Peoples R China

INTRODUCTIONPrimary intestinal B cell lymphoma is one of the most common extra-nodal lymphomas, which includes two types: intestinal mucosa-associated lymphoid tissue lymphoma (IMALToma) and lymphomatous polyposis (LP). Both have characteristic pathologic features, immunophen-otypes and biological behaviors. In this article, twenty-five cases were retrospectively analyzed with regard to criteria of diagnosis and clinicopathologic characteristics.

关键词： lymphoma/pathology intestinal neoplasms/pathology intestinal neoplasms/diagnosis

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Spalling characteristics of high-temperature treated granitic rock at different strain rates

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第4期16卷 1280-1288页

作者： L.F.fan q.H.Yang X.L.Du The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing100124China

The dynamic spalling characteristics of rock are important for stability analysis in rock *** paper presented an experimental investigation on the dynamic spalling characteristics of granite with different temperatures and strain rates.A series of dynamic spalling tests with different impact velocities were conducted on thermally treated granite at different *** dynamic spalling strengths of granite with different temperatures and strain rates were determined.A model was proposed to correlate the dynamic spalling strength of granite,high temperature and strain *** results show that the spalling strength of granite decreases with increasing ***,the spalling strength of granite with a higher strain rate is larger than that with a lower strain *** proposed model can describe the relationship among dynamic spalling strength of granite,high temperature and strain rate.

关键词： Dynamic spalling characteristics High temperature Strain rate Dynamic loading Granite

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Decentralized State Estimation of Combined Heat and Power System Considering Communication Packet Loss

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Journal of Modern Power Systems and Clean Energy 2020年第4期8卷 646-656页

作者： Wenjian Zheng Zhigang Li Xinyu Liang Jiehui Zheng q.H.Wu fan Hu School of Electric Power Engineering South China University of TechnologyGuangzhou 510641China Guangzhou Power Supply Guangdong Power Grid Co.Ltd.Guangzhou 510000China

In order to obtain an accurate state estimation of the operation in the combined heat and power system,it is necessary to carry out state *** to the limited information sharing among various energy systems,it is practical to perform state estimation in a decentralized ***,the possible communication packet loss is seldomly considered among various energy *** paper bridges this gap by proposing a relaxed alternating direction method of multiplier *** can also improve the computation efficiency compared with the conventional alternating direction of the multiplier *** studies of two test systems are carried out to show the validity and superiority of the proposed algorithm.

关键词： Alternating direction of multiplier algorithm combined heat and power system communication packet loss decentralized optimization state estimation

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Polybenzimidazolium-reinforced polyimide separators to inhibit dendrites for high-security lithium-ion batteries

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Science China Chemistry 2025年

作者： Guohua Sun Jiaqi Cui qingsong Zhang Yisong Zhou Xinluo Li Yingying Zhang Zhanao Zhang Xin Zhang Jiantao fan Pengpeng Li Lianlong Hou Nanjun Chen Hebei Key Laboratory of Flexible Functional Materials School of Materials Science and Engineering Hebei University of Science and Technology State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Academy for Advanced Interdisciplinary Studies Southern University of Science and Technology State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University

Lithium dendrite formation poses a significant safety hazard in lithium-ion batteries（LIBs）, severely impeding their widespread adoption and further technological advancements. Here, we present a novel quaternized polybenzimidazolium（q-PBI） to armor polyimide（PI） nanofiber separator（q-PBI@PI）, in which the q-PBI containing lithiophilicity and anionphilicity sites serves as the multifunctional nano-layers to suppress the Li dendrite and reinforce the mechanical properties of PI nanofiber ***, the q-PBI@PI separator displays an unprecedented mechanical strength of 82.8 MPa, significantly outperforming previously reported PI nanofiber membranes（typically below 50.0 MPa）. Besides, we demonstrate that the q-PBI@PI separator simultaneously possesses low nucleation overpotential（59 mV） and exceptional average coulombic efficiency due to the suppression of Li dendrite. Importantly, q-PBI@PI-based Li||Li battery enables a stable Li plating-stripping at 1.0 m A cm-2for600 h. Attributing to these exceptional merits, the armored PI separator-based LIBs display remarkable specific capability and capacity retention. The density function theory calculations reveal that q-PBI is conducive to the desolvation of Li+and can immobilize Li+and PF6-ions near affinity sites of PI nanofibers for inhibiting the formation of Li dendrites. Our work paves a new avenue for the design of next-generation high-performing separators in LIBs.

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A review on biodegradable biliary stents: materials and future trends

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Bioactive Materials 2022年第11期7卷 488-495页

作者： Ge Song Hugh q.Zhao qing Liu Zhongyong fan Beijing Advanced Medical Technologies Ltd Inc26 Yongwang West RoadBuilding 11DaxingBeijing102609PR China The Institute for Translational Nanomedicine Shanghai East HospitalThe Institute for Biomedical Engineering&Nano ScienceTongji University School of MedicineShanghai200092PR China Department of Materials Science Fudan UniversityShanghai200433PR China

Biliary stricture is defined as the reduction and narrowing of the bile duct lumen, which can be caused by many factors such as cancer and inflammation. Biliary stent placement can effectively alleviate benign and malignant biliary strictures. However, the commonly used plastic or metallic biliary stents are far from ideal and do not satisfy all clinical requirements,although several types of biodegradable biliary stents have been developed and used clinically. In this review, we summarized current development status of biodegradable stents with the emphasis on the stent materials. We also presented the future development trends based on the published literature.

关键词： Biodegradable biliary stent Biliary strictures Polydioxanone Poly(L-lactic acid) Drug-eluting stent

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PLASTIC DEFORMATION BEHAVIOR OF ELECTROFORMED COPPER LINER OF SHAPED CHARGE AT DIFFERENT STRAIN RATES

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Acta Metallurgica Sinica(English Letters) 2003年第1期16卷 72-77页

作者： H.Y.Gao W.H.Tian A.L.fan q.Sun Dept. of Mat. Phys. and Chem. Univ. of Sci. and Technol. Beijing Beijing 100083 China 210 Inst. Beijing 100081 China

The paper deals with different plastic deformation behavior of electroformed copper liner of shaped charge, deformed at high strain rate (about 1×107s-1) and normal strain rate (4×10-4s-1). The crystallographic orientation distribution of grains in recovered slugs which had undergone high-strain-rate plastic deformation during explosive detonation was investigated by electron backscattering Kikuchi pattern technique. Cellular structures formed by tangled dislocations and sub-grain boundaries consisting of dislocation arrays were detected in the recovered slugs. Some twins and slip dislocations were observed in specimen deformed at normal strain rate. It was found that dynamic recovery and recrystallization take place during high-strain-rate deformation due to the temperature rising, whereas the conventional slip mechanism operates during deformation at normal strain rate.

关键词： electroformation electron backscattering Kikuchi pattern cellular dislocation structure ultra-high-strain-rate deformation dynamic recovery and recrystallization

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