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Nano Research 2025年第1期18卷 195-207页

作者： Chun Zhu yifei yang Yike Jing Zhen Zeng Xuesong Yi Wei Sun Fei yang Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province School of Environmental Science and EngineeringHainan UniversityHaikou 570228China

Electrochemical nitrate reduction reaction(NO3RR)to ammonia is a promising approach to address excess Ncontamination in aqueous environment but suffers from a limited ammonia yield and selectivity due to the low concentration and sluggish *** work reports a three-dimensional porous electrode with binary Co_(2)Cu_(1)hydroxy phosphate embedded into the surface of Ni_(3)Co_(1)oxy/hydroxides(CoCu-PH@NiCo/Ni,“PH”means phosphate-hydroxide),which delivers a yield of 4.13 mg·h^(-1)·cm^(-2)with a high Faraday efficiency of 92.6%under a low nitrate concentration of 40 mM and provide an impressive *** embedded structure of the as-prepared catalyst exhibits unique metal coordination ligands and valence states different from the unitary *** electrochemical in situ infrared spectra and theoretical calculations revealed that the Co sites with the ability to dissociate water molecular to form adsorbed OH*can effectively provide the required protons for the deoxygenation and hydrogenation steps during NO3-conversion,thereby,effectively reducing the energy barrier of the key transition states in the NO3RR process to improve the intrinsic *** demonstrate that the rational design of binary components with the appropriate ability to activate water molecules as well as the threedimensional porous skeletal structure are expected to promote effectively the low-concentration nitrates conversion to ammonia.

关键词： nitrate reduction hydroxy phosphate surface embedded water dissociation active hydroxy adsorbed

Bayes-Based ARP Attack Detection Algorithm for Cloud Centers

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Tsinghua Science and Technology 2016年第1期21卷 17-28页

作者： Huan Ma Hao Ding yang yang Zhenqiang Mi James yifei yang Zenggang Xiong School of Computer and Communication Engineering University of Science and Technology Beijing Department of Electronics and Communication Engineering University of Illinois at Urbana-Champaign School of Computer and Information Science Hubei Engineering University

To address the issue of internal network security, Software-Defined Network（SDN） technology has been introduced to large-scale cloud centers because it not only improves network performance but also deals with network attacks. To prevent man-in-the-middle and denial of service attacks caused by an address resolution protocol bug in an SDN-based cloud center, this study proposed a Bayes-based algorithm to calculate the probability of a host being an attacker and further presented a detection model based on the algorithm. Experiments were conducted to validate this method.

关键词： cloud computing Bayes ARP attack detection software-defined network

Research progress of space non-pyrotechnic low-shock connection and separation technology(SNLT):A review

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Chinese Journal of Aeronautics 2022年第11期35卷 113-154页

作者： Honghao YUE yifei yang Yifan LU Fei yang Jun WU Qi RUAN Zongquan DENG State Key Laboratory of Robotics and System Harbin Institute of TechnologyHarbin 15000lChina

Space missions have become diversified in recent years, where connection and separation devices play a crucial role as key components of various spacecraft. Traditional pyrotechnic devices have the advantages of large carrying capacity, rapid motion and functional reliability. However,their shortcomings such as great release shock, poor safety, unrepeatability and other prominent defects make them unsuitable for new generation spacecraft such as microsatellites to separate at low shock or lock repeatedly, etc. Therefore, it is necessary to develop space non-pyrotechnic low-shock connection and separation devices(SNLD) which are required for advanced aerospace missions. In this paper, the progress of the research on space non-pyrotechnic low-shock connection and separation technology(SNLT) is summarized and reviewed. Proceed from the principle of reducing shock for non-pyrotechnic devices, present studies are classified from the perspective of actuating technology and systematic designing methods. For non-pyrotechnic actuating techniques,according to different driving sources, the separation devices are classified into several main categories: electric, magnetic, gas and thermal actuating devices. The actuation principle and application prospect of separation techniques are introduced and the working process, dimension and mechanical properties of typical devices are compared and evaluated. For the systematic designing method, the common mechanism types of SNLDs are summarized according to the designing concept of reducing shock. Then connection configurations are classified according to the structural forms of connection devices, of which the principles, bearing capacities and general applications are discussed. This paper systematically summarizes the key problems, puts forward the future development trend of SNLT, and points out the breakthrough direction for related scholars.

关键词： Connection Low-shock Non-pyrotechnic Separation Space

Research on Nanometer Technique and Low-Work-Loss Sensor

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稀有金属材料与工程 2006年第A3期35卷 110-112页

作者： Lan Wang Yayan Liu yifei yang Jingwen He1 Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Graduate School of Chinese Academy of Sciences Beijing 100080 China

The preparation process of the CO gas sensor used at normal temperature is *** electric conductance of this type of sensor evolved oscillation from regularly when the sensor is exposed to low level CO *** gas sensing mechanism was investigated by its crystalline *** mechanism of information sensing,which was the concurrence of the grain boundary barrier control and the crystal surface control,is discussed.

关键词： nanometer technique low-work-loss sensor

Facile synthesis of nanosized spinel high entropy oxide (FeCoNiCrMn)_(3)O_(4) for efficient oxygen evolution reaction

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Journal of Materiomics 2024年第4期10卷 919-927页

作者： Bomin Feng Jun Chen yifei yang Mao yang Hongbing Wang Changyin Zhong Xiaochong Zhao Yunxi Yao Institute of Materials China Academy of Engineering PhysicsJiangyou621908China

The sluggish reaction kinetics of oxygen evolution reaction(OER)and the high price of noble metal catalysts hinder the wide application of water electrolysis for hydrogen ***-entropy oxides(HEOs)with multi-components and high entropy stabilized structures have attracted great research interests due to their efficient and durable performance in electrolytic water splitting ***,the development of efficient HEO electrocatalysts are often hindered by the limited surface exposed active sites because high temperature is usually required to form a high entropy stabilized ***,a flaky high-entropy oxide with a spinel structure,(FeCoNiCrMn)_(3)O_(4),was synthesized by using the sacrificial layered carbon template in situ prepared by the volatile reaction between ammonium sulfate and molten ***-resolution TEM results show the as-prepared(FeCoNiCrMn)_(3)O_(4) flakes are composed of nanosized HEO *** nanosized(FeCoNiCrMn)_(3)O_(4) HEO electrocatalysts exhibit excellent OER activity,with an overpotential of 239 mV at 10 mA/cm^(2) and a Tafel slope of 52.4 mV/*** electrocatalyst has excellent *** at a high current density of 100 mA/cm^(2),the activity remains unchanged during the stability test for 24 *** results here shed a new light in the design and fabrication of highly efficient HEO electrocatalysts.

关键词： High entropy oxides Oxygen evolution reaction Spinel oxide Millard reaction Electrocatalyst

In vitro study of the nephrotoxicity of total Dahuang(Radix Et Rhizoma Rhei Palmati) anthraquinones and emodin in monolayer human proximal tubular epithelial cells cultured in a transwell chamber

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Journal of Traditional Chinese Medicine 2019年第5期39卷 609-623页

作者： Cao Chunyu Hui Lianqiang Li Chun yang yifei Zhang Jiyuan Liu Ting Hao Ran Zhang Yi Safety Evaluation Center for Chinese Materia Medica Institute of Chinese Materia MedicaChina Academy of Chinese Medical SciencesBeijing 100700China Quality Standard Center for Chinese Materia Medica Institute of Chinese Materia MedicaChina Academy of Chinese Medical SciencesBeijing 100700China Department of Sciences and Education Institute of Chinese Materia MedicaChina Academy of Chinese Medical SciencesBeijing 100700China Pharmacology Research Center for Chinese Materia Medica Institute of Chinese Materia MedicaChina Academy of Chinese Medical SciencesBeijing 100700China

OBJECTIVE: To examine changes in the morphology and physiological functions of human proximal tubular epithelial cells (HK-2 cells) caused by total Dahuang (Radix Et Rhizoma Rhei Palmati) anthraquinones (TDA) and emodin. METHODS: HK-2 cells were cultured on polycarbonate (PCF) membranes to form a complete monolayer of cells. A fluorescein isothiocyanate- dextran (FITC) permeability assay was conducted and secretion of γ-glutamyltranspeptidase (GGT), lactate dehydrogenase (LDH), N-acetyl-β-D-glucosaminidase (NAG) and kidney injury molecule 1 (KIM-1) was examined. The reabsorption of glucose and the excretion of para-aminohippuric acid (PAH) by HK-2 cells were also examined. The morphology of HK-2 cells was observed using optical microscopy and scanning electron microscopy. The cytoskeleton of HK-2 cells was observed under a fluorescence microscope. RESULTS: Compared with the results for the dimethyl sulfoxide group, treatment of cells with TDA and emodin showed statistically significant differences in the FITC leakage rate, the apical / basolateral ratio of LDH and GGT, and the secretion of GGT, LDH, NAG and KIM-1. At 64 μg/mL, TDA markedly inhibited blood glucose reabsorption and remarkably suppressed PAH excretion by HK-2 cells. Both TDA and emodin caused various degrees of damage to the morphology and cytoskeleton of HK-2 cells with the degree of damage correlating positively with the dosage of the tested ***: Both TDA and emodin caused damage to human renal proximal tubular epithelial cells at certain dosages. At the same dosage, TDA caused more severe damage than emodin to the HK-2 cells.

关键词： Anthraquinones Rheum Emodin Nephrotoxicity Human proximal tubular epithelial cell Transwell chamber

Light-up lipid droplets for the visualization of lipophagy and atherosclerosis by coumarin-derived bioprobe

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Chinese Chemical Letters 2021年第8期32卷 2385-2389页

作者： Jinrong Zheng Shuheng Qin Lijuan Gui Hua Li Lixue Fan yifei yang Haiyan Chen Hui Xu Zhenwei Yuan Department of Biomedical Engineering School of EngineeringChina Pharmaceutical UniversityNanjing 210009China School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation(Yantai University)Ministry of EducationCollaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of ShandongYantai UniversityYantai 264005China Department of Food Quality and Safety College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and ProcessingNanjing University of Finance and EconomicsNanjing 210023China

Lipid droplets(LDs) are intracellular lipid-metabolism organelles that involved in many physiological processes,metabolic disorders as well as diseases such as ***,the specific probes that can visually locate abnormal LDs-rich tissues and track LDs-associated behavior to the naked eye with adequate biosafety still are ***,we develop a new design strategy of LDs-targeted probe based on the solvatochromism of coumarin *** results revealed that the emission wavelength of coumarin fluorophores gradually red shift in different solvents with increasing polarity,while absorption wavelength almost *** a result,the enlarged stokes shift of coumarin was emerged from oil to ***,properly reducing water solubility and adding electronic donor at the structure of coumarins can enlarge this type of *** discovery was utilized to develop suitable probe for the image of LDs and LDs-rich tissues with high resolution and ***,LDs-associated behavior was visible to the naked eye during the process of lipophagy and *** deem that the developed probe here offers a new possibility to accurately diagnosis and analyse LDs-related diseases in clinic and preclinical study.

关键词： Lipid droplets Probe Lipophagy Atherosclerosis

Synergistic promotion strategy of “dual-site” and “dual-path” to enhance the C–C coupling between CO2 and HCHO driven by photoelectrocatalysis

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Journal of Energy Chemistry 2025年第1期100卷 39-49页

作者： Hongqiang yang Jianfeng Zheng Guoyu Wang yifei Gao Yatao yang Jia Li Xiaojin Han Yan Cui Zhanggen Huang National Key Laboratory of High Efficiency and Low Carbon Utilization of Coal Institute of Coal Chemistry Chinese Academy of Science University of Chinese Academy of Science Shenyang University of Chemical Technology

Photoelectrocatalytic coupling CO2and volatile organic compounds （VOCs） is a promising green strategy for the synergistic conversion of the two carbon-containing resources to *** catalytic efficiency is always at the mercy of chemical inertness of CO2and the competitive hydrogen evolution of ***,a modified g-C3N4/ZnAl-LDH Z-scheme heterojunction catalyst with dual reaction site was rationally designed and precisely *** Faraday efficiency of ethanol reached 68.67%with a corresponding formation rate of 227.3μmol *** revealed by in-situ characterizations and density functional theory calculations,CO2and HCHO were absorbed at Zn site and N site,***,*CO generated from CO2and HCHO was converted to*CH3O and*CHO on the dual-active-site *** detailed reaction mechanism experiments indicated that C–C coupling only occurred between*CO and*CH3O in electrocatalysis *** from the“*CO+*CH3O”path,another“*CO+*CHO”coupling path was also detected in photoelectrocatalytic *** selectivity of ethanol was significantly enhanced due to the synthesis of dual-site catalyst and the dual-path coupling path between CO2and HCHO simultaneously driven by light and electricity.

关键词： Photoelectrocatalysis Z-scheme C–C coupling Ethanol

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无人艇PHM系统体系结构研究

中国造船 2020年第S1期61卷 181-190页

作者：张茂慧杨奕飞江苏科技大学电子信息学院镇江212003 江苏科技大学海洋装备研究院镇江212003

随着无人艇的系统复杂性和智能化程度不断提高,以及工作环境复杂等因素,设备故障率不断升高,且故障发生后无法及时进行人工修复。无人艇PHM系统强调基于状态的早期故障预测和跨子系统智能推理,对无人艇的健康状态进行实时评估和管理,为... 详细信息

随着无人艇的系统复杂性和智能化程度不断提高,以及工作环境复杂等因素,设备故障率不断升高,且故障发生后无法及时进行人工修复。无人艇PHM系统强调基于状态的早期故障预测和跨子系统智能推理,对无人艇的健康状态进行实时评估和管理,为其维修保障提供决策支持。论文研究了无人艇PHM系统体系结构及其关键技术,提出一种无人艇PHM系统顶层设计方案,建立了PHM系统逻辑结构及方法库,并以无人艇电力系统为例进行了实例分析。分析表明:PHM系统能够有效降低故障发生概率,提高任务成功率,对提高无人艇的可靠性和安全性具有实际意义。

关键词：无人艇故障预测与健康管理

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铝锂合金自动铆接干涉量及残余应力分析

稀有金属材料与工程 2023年第5期52卷 1717-1724页

作者：丁坤英杨翼飞王者天津市民用航空器适航与维修重点实验室中国民航大学天津300300

铝锂合金是航空制造中的新型合金材料,其铆接技术是现代飞机制造重要研究方向。铆接后的铝锂合金板孔的干涉量影响到残余应力分布,为了研究铆接过程与残余应力分布特征之间的关系,利用自动钻铆装备对不同厚度的铝锂合金板进行铆接。使用... 详细信息

铝锂合金是航空制造中的新型合金材料,其铆接技术是现代飞机制造重要研究方向。铆接后的铝锂合金板孔的干涉量影响到残余应力分布,为了研究铆接过程与残余应力分布特征之间的关系,利用自动钻铆装备对不同厚度的铝锂合金板进行铆接。使用ABAQUS/Explicit对铝锂合金自动压铆过程进行了仿真,通过试验和仿真的方法分析不同压铆力、铆钉长度、壁板厚度和铆钉材料等组合条件下铝锂合金壁板内部所产生的干涉量,进而推导出各工艺条件下铝锂合金壁板厚度方向上残余应力的分布规律。结果表明,2060-T8铝锂合金壁板孔壁产生的干涉量及沿板厚方向分布的残余应力随压铆力的增大而增大,随铆钉长度的增大而减小,随壁板厚度的增加呈现非单调增长的趋势。壁板总厚度为4.2 mm时,平均干涉量及平均残余应力可以达到最大值。相比于2117-T4铝合金铆钉,采用7050-T3铝合金铆钉压铆后2060-T8铝锂合金壁板产生的平均干涉量降低6%~12%,平均残余应力降低8%~12%。

关键词：铝锂合金铆接工艺参数干涉量残余应力