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AIE interfacial supramolecular polymers

Chinese Chemical Letters 2024年第1期35卷 316-320页

作者： qingyun li Ziqing Hu Xiaofan Ji Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationHubei Key Laboratory of Material Chemistry and Service FailureHubei Engineering Research Center for Biomaterials and Medical Protective MaterialsSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China

High monomer concentration is a requisite for engendering the aggregation-induced emssion(AIE)phenomenon as well as the formation of supramolecular polymers.Therefore,this is supposed to ensure the generation of AIE supramolecular polymers,wherein the monomer soluability takes effect.Nevertheless,parts of supramolecular monomers are considered as poessessing different soluability towards the same sovlent,through which the polymerzation process is thus hard to proceed.Interfacial polymerzation gets over the soluabilty restriction,providing a facile method for propelling the reaction of thesemonomers.Herein,we had prepared M1 containing tetraphenylethene(TPE)functionalized with two terpyridine derivatives,then making M1 dissolving in CHCl3 to give solutions.Cu^(2+)solutions were fabricated through dissolving CuCl_(2)into H2O.Towards mixing those solutions,AIE interfacial supramolecular polymers(AIEISPs)displaying green fluorescence were generated at the interface of two phases on the basis of metal-coordination between terpyridine and Cu^(2+).These AIEISPs were certificated to possess the stimuli-responsiveness,for which the excessive addition of tetrabutylammonium hydroxide would cause the structure destruction owing to the stronger bonding ability with Cu^(2+)than that of terpyridine.These fabricated AIEISPs had provided a new avenue to prepare AIE supramolecular polymers.

关键词： Aggregation-induced emission Interfaces Metal-coordination interactions Supramolecular polymers Stimuli-responsiveness

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Iodine Promoted Ultralow Zn Nucleation Overpotential and Zn-Rich Cathode for Low-Cost, Fast-Production and High-Energy Density Anode-Free Zn-Iodine Batteries

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Nano-Micro Letters 2022年第12期14卷 373-386页

作者： Yixiang Zhang Lequan Wang qingyun li Bo Hu Junming Kang Yuhuan Meng Zedong Zhao Hongbin Lu State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan University2005 Songhu RoadShanghai 200438People’s Republic of China Yiwu Research Institute of Fudan University Chengbei RoadYiwu CityZhejiang 322000People’s Republic of China

The anode-free design is a promising strategy to increase the energy density of aqueous Zn metal batteries(AZMBs).However,the scarcity of Zn-rich cathodes and the rapid loss of limited Zn greatly hinder their commercial applications.To address these issues,a novel anode-free Zniodine battery(AFZIB)was designed via a simple,low-cost and scalable approach.Iodine plays bifunctional roles in improving the AFZIB overall performance:enabling high-performance Zn-rich cathode and modulating Zn deposition behavior.On the cathode side,the ZnI_(2) serves as Zn-rich cathode material.The graphene/polyvinyl pyrrolidone heterostructure was employed as an efficient host for ZnI_(2) to enhance electron conductivity and suppress the shuttle effect of iodine species.On the anode side,trace I_(3)^(−) additive in the electrolyte creates surface reconstruction on the commercial Cu foil.The in situ formed zincophilic Cu nanocluster allows ultralow-overpotential and uniform Zn deposition and superior reversibility(average coulombic efficiency>99.91% over 7,000 cycles).Based on such a configuration,AFZIB exhibits significantly increased energy density(162 Wh kg^(−1)) and durable cycle stability(63.8% capacity retention after 200 cycles)under practical application conditions.Considering the low cost and simple preparation methods of the electrode materials,this work paves the way for the practical application of AZMBs.

关键词： Zn metal battery Zn deposition Zn-rich cathode Anode-free Energy density

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Rational design of Aspergillus flavus A5p1-immobilized cell system to enhance the decolorization of reactive blue 4(RB4)

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Chinese Journal of Chemical Engineering 2022年第12期52卷 37-44页

作者： Wenbo Yang qingyun li Shiqi Guo Shijie Sun Aixing Tang Haibo liu Youyan liu School of Chemistry and Chemical Engineering Guangxi UniversityNanning 530004China Guangxi Key Laboratory of Biorefining Nanning 530003China

Anthraquinone dyes are a class of typical carcinogenic and hard-biodegradable organic pollutants.This study aimed to enhance the decolorization of anthraquinone dye by rationally designing an expected immobilized system.Reactive blue 4(RB4) was used as a substrate model and a previous isolated dyedegrading strain Aspergillus flavus A5pl was purposefully immobilized.Considering the effects of cell attachment and mass transfer,the polyurethane foam(PUF) with open pore structure was selected as the immobilization carrier.Results showed that the RB4 decolorization efficiency was significant enhanced after immobilization.Compared to the free mycelium system,the decolorization time of200 mg·L^(-1)RB4 was shortened from 48 h to 28 h by the PUF-immobilized cell system.Moreover,the PUF-immobilized system could tolerate RB4 up to 2000 mg-L^(-1).In the packed bed bioreactor(PBBR),an average decolorization efficiency of 93.3% could be maintained by the PUF-immobilized system for26 days.The decolorization process of RB4 was well described by the logistic equation and the degradation pathway was discussed.It was found that the higher specific growth rate of the PUF-immobilized cells was one of reasons for the enhanced decolorization.The good performance of the PUFimmobilized cell system would make it have potential application value for RB4 bioremediation.

关键词： Aspergillus flavus A5p1 Reactive blue 4(RB4) Polyurethane foam(PUF) Immobilized cell Decolorization

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非血栓栓塞性肿瘤相关性肺血管病早期诊断研究进展

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中华内科杂志 2024年第7期63卷 712-715页

作者：丁永杰张柳李庆云上海交通大学医学院附属瑞金医院呼吸与危重症医学科上海交通大学医学院呼吸病研究所上海

肿瘤相关性肺血管病包含多种类型, 可导致肺动脉高压、右心衰竭, 甚至死亡, 严重危害人类健康, 早期诊断对预后至关重要。除肿瘤相关性血栓栓塞症已被熟知外, 其他类型发病率低, 临床表现缺乏特异性, 临床医师对其认识不足。本文对非血... 详细信息

肿瘤相关性肺血管病包含多种类型, 可导致肺动脉高压、右心衰竭, 甚至死亡, 严重危害人类健康, 早期诊断对预后至关重要。除肿瘤相关性血栓栓塞症已被熟知外, 其他类型发病率低, 临床表现缺乏特异性, 临床医师对其认识不足。本文对非血栓栓塞性肿瘤相关肺血管病的诊断技术进展进行综述, 以协助早期诊断。

关键词：肿瘤肺血管病血栓栓塞, 非诊断

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Achievable degrees of freedom of MIMO two-way X relay channel with delayed CSIT

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Science China(Information Sciences) 2016年第8期59卷 193-203页

作者： qingyun li Gang WU Hongxiang li Shaoqian li National Key Laboratory of Science and Technology on Communications University of Electronic Science and Technology of China Department of Electrical and Computer Engineering University of Louisville

The previous work on interference alignment for multiple-input-multiple-output(MIMO) two-way X relay channel assumes perfect channel state information at the transmitter(CSIT), which is reasonable in slow fading channel. However, in fast fading scenario, this assumption is impractical. In this paper, assuming that each node has delayed CSIT, we study the achievable degrees of freedom(DOF) for MIMO two-way X relay channel in frequency division duplex(FDD) systems. Specifically, in the broadcast(BC) phase, we propose a new multiple-stage transmission(MST) scheme, which utilizes retrospective interference alignment for physical layer network coding(PLNC). We show that MST can achieve significant DOF gain and tremendous power gain over other schemes. When the number of antennas for each user, N, is smaller than the number of the relays, M, the time division multiple access(TDMA) scheme can only achieve an ergodic sum-rate increase by N bps/Hz for every increasing of 3 d B of signal-to-noise power ratio(SNR), while the proposed MST scheme can achieve an ergodic sum-rate increase by M bps/Hz.

关键词： degrees of freedom physical layer network coding interference alignment delayed CSIT multiplestage transmission

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Risk of extended viral shedding of Omicron BA.2 in Shanghai:Implications for vaccination strategy optimization

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Chinese Medical Journal Pulmonary and Critical Care Medicine 2023年第4期1卷 241-248页

作者： Jingwen Huang lin Huang Jing Xi Yong li Jianping Zhou Zhiyao Bao Qijian Cheng qingyun li Min Zhou Ren Zhao Yanan li Department of Pulmonary and Critical Care Medicine Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China Institute of Respiratory Diseases Shanghai Jiao Tong University School of MedicineShanghai 200025China Shanghai Key Laboratory of Emergency Prevention Diagnosis and Treatment of Respiratory Infectious DiseasesShanghai 200025China Medical Department Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China Department of General Surgery Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China

Background:In late March 2022,an outbreak of coronavirus disease 2019(COVID-19)caused by the Omicron BA.2 strain occurred in Shanghai,China.This retrospective study aimed to investigate the clinical characteristics,laboratory parameters,and vaccine protectiveness related to this disease in China.Methods:We conducted a single-center retrospective study on 735 patients with COVID-19 hospitalized from March 17 to May 14,2022.Clinical characteristics were analyzed based on vaccination status and viral shedding time(VST).The least absolute shrinkage and selection operator(LASSO)regression and 5-fold cross-validation were applied to screen factors linked to the rate of the VST.Generalized linear models were further applied to estimate the odds ratios for factors influencing the VST.Results:The median VST of unvaccinated patients was 13(11-16)days,which was longer than that of patients vaccinated with one or two doses(11[9-13]days)and with completed booster doses(11[8-12]days).A LASSO regression model and 5-fold cross-validation showed that age of≥60 years(β=0.01),pneumonia(β=0.53),and higher number of comorbidities(β=0.69)were positively associated with the VST,whereas the platelet count(β=-8.0×10-5)was inversely associated with the VST.Subgroup analysis revealed that the number of vaccinations was significantly associated with a decreased VST among patients with renal dysfunction(odds ratio[OR],0.65;95%confidence interval[CI],0.44-0.97;P=0.034)and patients with two or more comorbidities(OR,0.09;95%CI,0.03-0.28;Pliminary results suggest that the complete and booster vaccination contributes to the viral clearance of Omicron BA.2 variants,while the protectiveness of vaccination is most imperative in patients with impai

关键词： Omicron Vaccination status Viral shedding Platelet Lymphocyte

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海外学界对新时代中国叙事的研究及其启示

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当代中国史研究 2024年第2期31卷 101-111,M0006页

作者：李庆云陈峻杰上海社会科学院马克思主义学院 200020 上海社会科学院中国马克思主义研究所 200020 中共成都东部新区工作委员会党群工作部 641419

中共十八大以来,随着中国国际影响力不断提升,海外学界对中国叙事的关注度和研究热情明显提高。概括而言,海外学界认为,新时代中国叙事是更加自信、更加积极主动的全新叙事,在叙事主体、方法、受众和基调等方面表现出了鲜明的新时代特... 详细信息

中共十八大以来,随着中国国际影响力不断提升,海外学界对中国叙事的关注度和研究热情明显提高。概括而言,海外学界认为,新时代中国叙事是更加自信、更加积极主动的全新叙事,在叙事主体、方法、受众和基调等方面表现出了鲜明的新时代特色。新时代的中国叙事为建设美好世界不断提供中国方案和中国智慧,彰显了中国作为发展中大国的自信和责任担当,塑造了良好的国际形象。但中国的崛起重塑着中国与世界的关系,新时代中国叙事同时面临着新的机遇和风险挑战。理性分析这些研究观点,对中国在新时代提升叙事能力和效能、加快构建叙事体系具有重要意义。

关键词：新时代海外中国研究中国叙事

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Distribution and sources of polycyclic aromatic hydrocarbons and phthalic acid esters in water and surface sediment from the Three Gorges Reservoir

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Journal of Environmental Sciences 2018年第7期30卷 271-280页

作者： li lin Lei Dong Xiaoyang Meng qingyun li Zhuo Huang Chao li Rui li Wenjun Yang John Crittenden Basin Water Environmental Research Department Changjiang River Scientific Research Institute Wuhan 430010 China Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province Wuhan 430010 China Brook Byers Institute of Sustainable Systems School of Civil and Environmental Engineering Georgia Institute of Technology AtlantaGA 30332 USA Administration Of.rice Changjiang River Scientific Research Institute Wuhan 430010 China

After the impoundment of the Three Gorges Reservoir（TGR）, the hydrological situation of the reservoir has changed greatly. The concentration and distribution of typical persistent organic pollutants in water and sediment have also changed accordingly. In this study, the concentration, distribution and potential sources of 16 polycyclic aromatic hydrocarbons（PAHs） and 6 phthalic acid esters（PAEs） during the water drawdown and impoundment periods were investigated in water and sediment from the TGR. According to our results, PAHs and PAEs showed temporal and spatial variations. The mean ΣPAH and ΣPAE concentrations in water and sediment were both higher during the water impoundment period than during the water drawdown period. The water samples from the main stream showed larger ΣPAH concentration fluctuations than those from tributaries. Both the PAH and PAE concentrations meet the Chinese national water environmental quality standard（GB 3838-2002）. PAH monomers with 2–3 rings and 4 rings were dominant in water, and 4-ring and 5–6-ring PAHs were dominant in sediment. Di-n-butyl phthalate（DBP） and di-2-ethylhexyl phthalate（DEHP）were the dominant PAE pollutants in the TGR. DBP and DEHP had the highest concentrations in water and sediment, respectively. The main source of PAHs in water from the TGR was petroleum and emissions from coal and biomass combustion, whereas the main sources of PAHs in sediments included coal and biomass combustion, petroleum, and petroleum combustion. The main source of PAEs in water was domestic waste, and the plastics and heavy chemical industries were the main sources of PAEs in sediment.

关键词： Three Gorges Reservoir（TGR） Polycyclic aromatic hydrocarbons（PAHs） Phthalic acid esters（PAEs） Water impoundment period Water drawdown period Sources

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枯草芽孢杆菌表面展示氨肽酶的构建及协同水解大豆蛋白

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化工进展 2024年第3期43卷 1466-1473页

作者：袁晓黎李青云刘幽燕李进白雪唐爱星广西大学化学化工学院广西南宁530004 广西生物炼制重点实验室广西南宁530007

氨肽酶是蛋白质深度水解的重要协同酶,但游离酶使用成本高且稳定性差,限制了其工业化应用。本研究利用表面展示技术将来源于铜绿假单胞菌GF31的氨肽酶基因Aps展示到Bacillus subtilis WB800N芽孢的表面,构建了一种易分离且稳定性好的新... 详细信息

氨肽酶是蛋白质深度水解的重要协同酶,但游离酶使用成本高且稳定性差,限制了其工业化应用。本研究利用表面展示技术将来源于铜绿假单胞菌GF31的氨肽酶基因Aps展示到Bacillus subtilis WB800N芽孢的表面,构建了一种易分离且稳定性好的新型全细胞生物催化剂。通过免疫荧光分析,证明氨肽酶在芽孢表面正确表达。在最适反应温度60℃、pH=9.0的条件下,氨肽酶活力最高可达75.61U/g芽孢。将表面展示氨肽酶协同碱性蛋白酶水解大豆蛋白,在60℃、碱性蛋白酶与表面展示氨肽酶加入比例为2∶1、水解pH先为10.0后为9.0的条件下,水解5.0%的大豆蛋白8h,水解度最高可达55.50%,分别是表面展示氨肽酶与碱性蛋白酶单独水解时的3.3倍、1.5倍。同时16种游离氨基酸含量大幅度提升,其中疏水性氨基酸亮氨酸、酪氨酸和苯丙氨酸含量分别增加19.21mg/L、8.59mg/L和16.77mg/L,鲜味氨基酸谷氨酸、天冬氨酸含量增加13.98mg/L和4.11mg/L,说明表面展示氨肽酶在蛋白质的深度水解及对蛋白水解液脱苦、增鲜方面具有显著的作用,具有良好的工业应用前景。

关键词：氨肽酶表面展示枯草芽孢杆菌大豆蛋白协同水解

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Air route network optimization in fragmented airspace based on cellular automata

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Chinese Journal of Aeronautics 2017年第3期30卷 1184-1195页

作者： Shijin WANG Xi CAO Haiyun li qingyun li Xu HANG Yanjun WANG College of Civil Aviation Nanjing University of Aeronautics and Astronautics Air Traffic Control Division Central-south Regional Air Traffic Management Bureau

Air route network optimization,one of the essential parts of the airspace planning,is an effective way to optimize airspace resources,increase airspace capacity,and alleviate air traffic congestion.However,little has been done on the optimization of air route network in the fragmented airspace caused by prohibited,restricted,and dangerous areas（PRDs）.In this paper,an air route network optimization model is developed with the total operational cost as the objective function while airspace restriction,air route network capacity,and non-straight-line factors（NSLF） are taken as major constraints.A square grid cellular space,Moore neighbors,a fixed boundary,together with a set of rules for solving the route network optimization model are designed based on cellular automata.The empirical traffic of airports with the largest traffic volume in each of the 9 flight information regions in China's Mainland is collected as the origin-destination（OD） airport pair demands.Based on traffic patterns,the model generates 35 air routes which successfully avoids 144 PRDs.Compared with the current air route network structure,the number of nodes decreases by 41.67%,while the total length of flight segments and air routes drop by 32.03% and 5.82% respectively.The NSLF decreases by 5.82% with changes in the total length of the air route network.More importantly,the total operational cost of the whole network decreases by 6.22%.The computational results show the potential benefits of the model and the advantage of the algorithm.Optimization of air route network can significantly reduce operational cost while ensuring operation safety.

关键词： Air route network planning Airspace restriction Cellular automata Network capacity Optimization of nodes

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