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Defect and Doping Co‑Engineered Non‑Metal Nanocarbon ORR Electrocatalyst

Nano-Micro Letters 2021年第4期13卷 178-207页

作者： Jian Zhang Jingjing Zhang Feng He yijun chen Jiawei Zhu Deli Wang Shichun Mu Hui Ying Yang Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China Pillar of Engineering Product Development Singapore University of Technology and Design8 Somapah RoadSingapore 487372Singapore State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200People’s Republic of China

Exploring low-cost and earth-abundant oxygen reduction reaction(ORR)electrocatalyst is essential for fuel cells and metal–air *** them,non-metal nanocarbon with multiple advantages of low cost,abundance,high conductivity,good durability,and competitive activity has attracted intense interest in recent *** enhanced ORR activities of the nanocarbons are normally thought to originate from heteroatom(e.g.,N,B,P,or S)doping or various induced ***,in practice,carbon-based materials usually contain both dopants and *** this regard,in terms of the co-engineering of heteroatom doping and defect inducing,we present an overview of recent advances in developing non-metal carbon-based electrocatalysts for the *** characteristics,ORR performance,and the related mechanism of these functionalized nanocarbons by heteroatom doping,defect inducing,and in particular their synergistic promotion effect are emphatically analyzed and ***,the current issues and perspectives in developing carbon-based electrocatalysts from both of heteroatom doping and defect engineering are *** review will be beneficial for the rational design and manufacturing of highly efficient carbon-based materials for electrocatalysis.

关键词： Defect Doping Electrocatalyst Oxygen reduction reaction Non-metal nanocarbon

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Dynamic reconfiguration for TEG systems under heterogeneous temperature distribution via adaptive coordinated seeker

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Protection and Control of Modern Power Systems 2022年第1期7卷 567-585页

作者： yijun chen Bo Yang Zhengxun Guo Jingbo Wang Mengmeng Zhu Zilin Li Tao Yu Faculty of Electric Power Engineering Kunming University of Science and TechnologyKunming 650500China Electric Power Research Institute of Yunnan Power Grid Co. LtdKunming 650217China Department of Elec-trical Engineering Hong Kong Polytechnic UniversityKowloon 999077Hong Kong SARChina College of Electric Power South China University of Tech-nologyGuangzhou 510640China.

A thermoelectric generation(TEG)system has the weakness of relatively low thermoelectric conversion efficiency caused by heterogeneous temperature distribution(HgTD).Dynamic reconfiguration is an effective technique to improve its overall energy efficiency under ***,numerous combinations of electrical switches make dynamic reconfiguration a complex combinatorial optimization *** paper aims to design a novel adaptive coordinated seeker(ACS)based on an optimal configuration strategy for large-scale TEG systems with series-paral-lel connected modules under *** properly balance global exploration and local exploitation,ACS is based on'divide-and-conquer'parallel computing,which synthetically coordinates the local searching capability of tabu search(TS)and the global searching capability of a pelican optimization algorithm(POA)during *** addition,an equivalent re-optimization strategy for a reconfiguration solution obtained by meta-heuristic algorithms(MhAs)is proposed to reduce redundant switching actions caused by the randomness of *** case studies are carried out to assess the feasibility and superiority of AcS in comparison with the artificial bee colony algorithm,ant colony optimization,genetic algorithm,particle swarm optimization,simulated annealing algorithm,TS,and *** results indicate that ACS can realize fast and stable dynamic reconfiguration of a TEG system under *** addition,RTLAB platform-based hardware-in-the-loop experiments are carried out to further validate the hardware implemen-tation feasibility.

关键词： Thermoelectric generation systems Dynamic reconfiguration Heterogeneous temperature distribution Adaptive coordinated seeker

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Reprogrammed siTNFα/neutrophil cytopharmaceuticals targeting inflamed joints for rheumatoid arthritis therapy

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Acta Pharmaceutica Sinica B 2023年第2期13卷 787-803页

作者： yijun chen Kaiming Li Mengying Jiao Yingshuang Huang Zihao Zhang Lingjing Xue Caoyun Ju Can Zhang State Key Laboratory of Natural Medicines Jiangsu Key Laboratory of Drug Discovery for Metabolic DiseasesCenter of Advanced Pharmaceuticals and BiomaterialsChina Pharmaceutical UniversityNanjing 210009China

Rheumatoid arthritis(RA)is an autoimmune disease characterized by severe synovial inflammation and cartilage *** great progress in RA therapy,there still lacks the drugs to completely cure RA ***,we propose a reprogrammed neutrophil cytopharmaceuticals loading with TNFα-targeting-siRNA(siTNFα)as an alternative anti-inflammatory approach for RA *** loaded siTNFαact as not only the gene therapeutics to inhibit TNFαproduction by macrophages in inflamed synovium,but also the editors to reprogram neutrophils to anti-inflammatory *** the active tendency of neutrophils to inflammation,the reprogrammed siTNFα/neutrophil cytopharmaceuticals(siTNFα/TP/NEs)can rapidly migrate to the inflamed synovium,transfer the loaded siTNFαto macrophages followed by the significant reduction of TNFαexpression,and circumvent the pro-inflammatory activity of neutrophils,thus leading to the alleviated synovial inflammation and improved cartilage *** work provides a promising cytopharmaceutical for RA treatment,and puts forward a living neutrophil-based gene delivery platform.

关键词： Neutrophil cytopharmaceuticals siRNA Macrophages Rheumatoid arthritis Tumor necrosis factorα Gene delivery Anti-inflammatory Cartilage protection

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The Effectiveness of Peer Feedback on Second Language Writing

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Journal of Contemporary Educational Research 2024年第2期8卷 68-79页

作者： yijun chen Beijing Technology and Business University Beijing 100142China

Peer feedback is a widely utilized practice in writing classrooms for second languages(L2)that has drawn a lot of *** some support the practice because of the clear advantages that peer feedback offers students,others doubt its *** various forms of feedback is therefore necessary,as is determining the effects that peer feedback has on students and the variables that might affect how successful peer feedback *** paper focuses on the usefulness of peer feedback for L2 writing,based on a review of studies on the *** findings imply that the functions of peer and teacher feedback are distinct,and that peer feedback is advantageous to both parties,particularly to the *** attitudes and cultural backgrounds of the students are among the other factors that affect how effective peer feedback ***,some implications for future research and education are presented.

关键词： Peer feedback Quality Benefits Providers Receivers Perceptions Training

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Analysis of the Current Situation of Sports Consumption of Students Majoring in Physical Education in Yichun University

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教育研究前沿（中英文版） 2019年第4期9卷 342-345页

作者： yijun chen Jiangxi Normal University Nanchang CityJiangxi Province330000

This study takes the physical education majors of Yichun College of Physical Education as the research object,and makes use of the mathematical statistics,method of questionnaire,method of interview versus literature method to conduct sports consumption from the basic situation of sports consumption and sports consumption level of the *** and analysis,to understand the current situation of sports consumption of the *** research results show that the sports consumption expenditure of the professional students has a higher proportion in the overall consumption,and the sports consumption behavior is more frequent,but there are big differences in the purpose and consumption classification of sports *** survey can provide targeted opinions for the physical education students of Yichun College and the sports consumption of colleges and universities nationwide,and also than I hope to provide a feasible reference for the development of China's sports industry.

关键词： Yichun College Physical Education Sports Consumption Behavior

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Biopolymer passivation for high-performance perovskite solar cells by blade coating

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Journal of Energy Chemistry 2021年第3期30卷 45-52页

作者： Shudi Qiu Xin Xu Linxiang Zeng Zhen Wang yijun chen Culling Zhang Chaohui Li Jinlong Hu Tingting Shi Yaohua Mai Fei Guo Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632GuangdongChina Siyuan Laboratory Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials Department of Physics Jinan UniversityGuangzhou 510632GuangdongChina College of Chemistry Environmental Engineering Datong University.Datong 037009ShanxiChina National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou UniversityZhengzhou 450002HenanChina

Thin films of perovskite deposited from solution inevitably introduce large number of defects,which serve as recombination centers and are detrimental for solar cell *** many small molecules and polymers have been delicately designed to migrate defects of perovskite films,exploiting credible passivation agents based on natural materials would offer an alternative ***,an ecofriendly and cost-effective biomaterial,ploy-L-lysine(PLL),is identified to effectively passivate the defects of perovskite films prepared by *** is found that incorporation of a small amount(2.5 mg mL^(-1))of PLL significantly boosts the performance of printed devices,yielding a high efficiency of 19.45% with an increase in open-circuit voltage by up to 100 *** functional theory calculations combined with X-ray photoelectron spectroscopy reveal that the functional groups(-NH2,-COOH)of PLL effectively migrate the Pb-I antisite defects via Pb-N coordination and suppress the formation of metallic Pb in the blade-coated perovskite *** work suggests a viable avenue to exploit passivation agents from natural materials for preparation of high-quality perovskite layers for optoelectronic applications.

关键词： Perovskite solar cells Blade coating Biopolymer passivation Density functional theory

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Analysis on the Physical Characteristics of High-level Football Players

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教育研究前沿（中英文版） 2019年第4期9卷 338-341页

作者： yijun chen Jiangxi Normal University Nanchang CityJiangxi Province330000

This article uses the literature data method and literature review method to review and collect relevant literature,and summarizes and analyzes the representative views on domestic physical fitness *** summarizing and summarizing,it is considered that:physical energy is the basic athletic ability of the human body expressed through physical qualities such as strength,speed,endurance,coordination,flexibility,and sensitivity,and is an important component of athletes'athletic *** level of physical fitness is closely related to the morphological characteristics of the human body and the functional characteristics of the human *** morphological characteristics of the human body are the structural basis of its physical fitness,and the functional characteristics of the human body are its biological functional *** the basic ability of athletes,physical fitness is an important factor of athletes'competitive *** competitive sport has its own specific physical characteristics and training rules and *** these laws has very important guiding significance for the improvement of athletes'sports level.

关键词： Physical Fitness Athletic Ability High Level Football Player Physical Characteristics

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Metal-Free Photocatalytic[4+2]Annulation of Acrylamides with 2-Benzyl-2-bromocarbonyls to Assemble Tetralin-1-carboxamides

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Chinese Journal of Chemistry 2024年第2期42卷 157-163页

作者： Weicai Li Lu Tan yijun chen Rui Liu Zhongyu Qi Shixuan Yuan Zhanwen Huang Siping Wei Xi Du Dong Yi Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province School of PharmacySouthwest Medical UniversityLuzhouSichuan 646000China Department of Chemistry School of Basic Medical ScienceSouthwest Medical UniversityLuzhouSichuan 646000China Department of Pharmacy Affiliated HospitalSouthwest Medical UniversityLuzhouSichuan 646000China

Tetralin-1-carboxamides are frequently incorporated in myriad medicinally important ***,their existing synthetic routes not only suffer from some drawbacks such as tedious procedures,harsh reaction conditions,narrow substrate scope,low yields,and environmental problems,but are also based upon the elaboration of uneasily available non-linear tetralin ***,we describe a metal-and additive-free visible light-induced[4+2]annulation of two simple linear starting materials,namely acrylamides and 2-benzyl-2-bromocarbonyls,through a cascade C(sp^(3))-Br/C(sp^(2))-H bond cleavage,double C-C bond formation,and aromatization *** developed protocol provides a convenient,efficient,and green approach to a variety of tetralin-1-carboxamide derivatives with good functional group ***,the resulting products could also undergo the Licl-mediated mono-decarboxylative cyclization process to further furnish the architecturally novel bridged polycyclic imides with excellentcis-diastereoselectivities.

关键词： Annulation Metal-free Photoredox catalysis Tetralin-1-carboxamide Cyclic imides Synthetic methods C-C coupling Radical reactions Reaction mechanisms

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Classification and Summarization of Solar Irradiance and Power Forecasting Methods:A Thorough Review

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CSEE Journal of Power and Energy Systems 2023年第3期9卷 978-995页

作者： Bo Yang Tianjiao Zhu Pulin Cao Zhengxun Guo Chunyuan Zeng Danyang Li yijun chen Haoyin Ye Ruining Shao Hongchun Shu Tao Yu Faculty of Electric Power Engineering Kunming University of Science and TechnologyKunming 650500China College of Electric Power South China University of TechnologyGuangzhou 510640China

Solar forecasting is of great importance for ensuring safe and stable operations of the power system with increased solar power integration,thus numerous models have been presented and reviewed to predict solar irradiance and power forecasting in the past ***,few studies take into account the temporal and spatial resolutions along with specific characteristics of the ***,this paper aims to demonstrate a comprehensive and systematic review to further solve these ***,five classifications and seven pre-processing methods of solar forecasting data are systematically reviewed,which are significant in improving forecasting ***,various methods utilized in solar irradiance and power forecasting are thoroughly summarized and discussed,in which 128 algorithms are elaborated in tables in the light of input variables,temporal resolution,spatial resolution,forecast variables,metrics,and characteristics for a more fair and comprehensive ***,they are categorized into four groups,namely,statistical,physical,hybrid,and others with relevant application conditions and ***,six categories,along with 30 evaluation criteria,are summarized to clarify the major purposes/applicability of the different *** prominent merit of this study is that a total of seven perspectives and trends for further research in solar forecasting are identified,which aim to help readers more effectively utilize these approaches for future in-depth research.

关键词： Hybrid methods physical methods preprocessing methods solar irradiance and power forecasting statistical methods

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Simultaneous determination of four Sudan dyes in rat blood by UFLC–MS/MS and its application to a pharmacokinetic study in rats

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Journal of Pharmaceutical Analysis 2015年第4期5卷 239-248页

作者： Hao Zhu yijun chen Changshun Huang Yangyang Han Yiwei Zhang Shucan Xie Xiaohong chen Micong Jin Department of Anesthesia the First Hospital of Ningbo City Zhejiang Provincial Key Laboratory of Health Risk Appraisal for Trace Toxic Chemicals Ningbo Municipal Center for Disease Control and Prevention Ningbo Key Laboratory of Poison Research and Control Ningbo Municipal Center for Disease Control and Prevention

A rapid and sensitive method based on ultrafast liquid chromatography-tandem mass spectrometry was developed and validated for simultaneous determination of Sudan I, Sudan II, Sudan 111, and Sudan IV levels in rat whole blood. Cleanert C18 mixed-mode polymeric sorbent was used for effective solid-phase extraction cleanup. Separation was carried out on a reversed-phase C18 column （100 mm x 2.1 mm, 1.8 pro） using 0.1% （v/v） formic acid in water/0.] % （v/v） formic acid in acetonitrile as the mobile phase in gradient elution. Quantification was performed by an electrospray ionization source in the positive multiple reaction monitoring mode using Ds-Sudan I as the internal standard. Calibration curves showed good linearity between 0.2 and 20.0 μg/L, with correlation coefficients higher than 0.9990. The average recovery rates were between 93.05% and 114.98%. The intra- and inter-day relative standard deviations were within 6.2%. The lower limit of quantification was 0.2 μg/L. All the analytes were found to be stable in a series of stability studies. The proposed method was successfully applied to a pharmacokinetic study of four Sudan dyes after oral administration to rats.

关键词： Multiple reaction monitoringPbarmacokineticsRat whole bloodSudan dyeUFLC-MS/MS

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