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2023 China Automation Congress, CAC 2023

作者： He, Shaoqi Xiao, Liangang Sun, Peng Beijing Aerospace Automatic Control Institute National KeyLaboratory and Technology on Aerospace Intelligence Control Beijing China Beijing Aerospace Automatic Control Institute Committee of Science and Technologyational Key Laboratory of Science and Technology on Aerospace Beijing China Beijing Aerospace Automatic Control Institute Guidance and Detection Division Beijing China

ISBN: (纸本)9798350303759

Aiming at the problem of poor anti-noise interference ability of linear FM fuzes, the noise FM interference suppression method based on adaptive trap is proposed, and the adaptive trap is applied to linear FM fuzes for the single-frequency characteristics of linear FM fuzes generated by the frequency-checking signals. By adaptively adjusting the weights of the trap, the trap has a trapping characteristic at the frequency Dian of the differential frequency signal, so as to achieve the effect of noise FM interference suppression, and experiments show that the algorithm can recover the target echo signal when the interference signal is stronger than the target echo by 10 dB. © 2023 IEEE.

关键词： Frequency modulation

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Lycorine derivative effectively inhibits the replication of coronaviruses both in vitro and in vivo

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hLife 2024年第2期2卷 75-87页

作者： Liang Shen Jianzhong Zhao Ying Xia Junjie Lu Jiali Sun Jian Tang Hui Xing Lijuan Yin Yang Yang Chunhua Wang Department of Clinical Laboratory Xiangyang Central HospitalAffiliated Hospital of Hubei University of Arts and ScienceHubeiChina Shenzhen Key Laboratory of Pathogen and Immunity National Clinical Research Center for Infectious DiseaseState Key Discipline of Infectious DiseaseShenzhen Third People’s HospitalSecond Hospital Affiliated to Southern University of Science and TechnologyGuangdongChina Department of Clinical Laboratory Xiangyang No.1 People’s HospitalHubei University of MedicineHubeiChina State Key Laboratory of Food Nutrition and Safety Key Laboratory of Industrial MicrobiologyMinistry of EducationTianjin Key Laboratory of Industry MicrobiologyNational and Local United Engineering Lab of Metabolic Control Fermentation TechnologyChina International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal ChemistryCollege of BiotechnologyTianjin University of Science&TechnologyTianjinChina

The established and ongoing prevalence of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)and seasonal human coronaviruses(HCoV)like HCoV-OC43,HCoV-NL63,and HCoV-229E,pose a continuous threat to public ***,it is urgently needed to explore antiviral drugs with broad-spectrum anti-coronavirus *** previous studies have revealed that lycorine is a potent broad-spectrum anti-coronavirus drug,a natural alkaloid extracted from Amaryllidaceae with various pharmacological and microbiological ***,it is unsafe to directly use lycorine as a clinical antiviral drug due to the cytotoxicity and induction of cell *** this study,a series of lycorine derivatives were designed and *** of them,named Ly-8,was found to effectively inhibit the replication of different coronavirus strains in vitro,including ***,Ly-8 was also shown to effectively inhibit HCoVOC43 replication in the central nervous system,and provide effective protection against HCoV-OC43 infection in mice with low drug ***,Ly-8-resistant mutants were not observed during the 30 times sequential passages in cell ***,these findings suggest that Ly-8 may be a potential candidate drug for the future development of broad-spectrum anti-coronavirus drugs.

关键词： broad-spectrum antiviral drug lycorine derivative Ly-8

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Degradation of odorous 2,4,6-trichloroanisole in chlorinated water by UV-LED/chlorination: kinetics and influence factors

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Environmental science and Pollution Research 2023年第15期30卷 44325-44336页

作者： Zhang, Yun-Lu Lin, Yi-Li Zhang, Tian-Yang Lu, Yong-Shan Zhou, Xiao-Yang Liu, Zhi Zheng, Zheng-Xiong Xu, Meng-Yuan Xu, Bin State Key Laboratory of Pollution Control and Resource Reuse Key Laboratory of Yangtze Water Environment Ministry of Education College of Environmental Science and Engineering Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China Department of Safety Health and Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung824 Taiwan

2,4,6-Trichloroanisole (2,4,6-TCA) has aroused a special concern for their odor problem and potential threats. In this study, the degradation of 2,4,6-TCA by UV/chlorination with different UV sources was compared, including low-pressure mercury lamp (LPUV, 254 nm) and ultraviolet light-emitting diode (UV-LED, 275 and 285 nm). The maximum removal of 2,4,6-TCA can be achieved by 275-nm UV-LED/chlorination in neutral and alkaline conditions which was 80.0%. The reaction, kinetics, and water matrix parameters on 2,4,6-TCA degradation were also evaluated. During UV-LED (275 nm)/chlorination, 2,4,6-TCA degradation was mainly caused by direct UV photolysis and indirect hydroxyl radical (HO·) oxidation, while reactive chlorine radicals (RCSs) had a negligible contribution. The second-order rate constant between HO· and 2,4,6-TCA was determined as 3.1 × 109 M−1 s−1. Increasing initial chlorine dosage and decreasing 2,4,6-TCA concentration or pH value significantly promoted 2,4,6-TCA degradation during UV/chlorination process. The presence of natural organic matter (NOM) and bicarbonate (HCO3−) can inhibit 2,4,6-TCA degradation, while chloride ion (Cl−) had a negligible effect. The kinetic model for 2,4,6-TCA degradation was established and validated, and the degradation pathways were proposed based on the identified intermediates. Furthermore, UV-LED (275 nm)/chlorination also exhibited a promising effect on 2,4,6-TCA removal in real water, which can be used to control 2,4,6-TCA pollution and odor problems. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

关键词： Alkalinity

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Vibration-Based Fault Diagnosis for Railway Point Machines Using VMD and Multiscale Fluctuation-Based Dispersion Entropy

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Chinese Journal of Electronics 2024年第3期33卷 803-813页

作者： Yongkui SUN Yuan CAO Peng LI Guo XIE Tao WEN Shuai SU National Engineering Research Center of Rail Transportation Operation and Control System Beijing Jiaotong University School of Electronic and Information Engineering Beijing Jiaotong University Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing Xi'an University of Technology Frontiers Science Center for Smart High-speed Railway System Beijing Jiaotong University

As one of the most important railway signaling equipment,railway point machines undertake the major task of ensuring train operation *** fault diagnosis for railway point machines becomes a hot *** the advantage of the anti-interference characteristics of vibration signals,this paper proposes an novel intelligent fault diagnosis method for railway point machines based on vibration signals.A feature extraction method combining variational mode decomposition(VMD) and multiscale fluctuation-based dispersion entropy is developed,which is verified a more effective tool for feature ***,a two-stage feature selection method based on Fisher discrimination and ReliefF is proposed,which is validated more powerful than single feature selection ***,support vector machine is utilized for fault *** comparisons show that the proposed method performs *** diagnosis accuracies of normal-reverse and reverse-normal switching processes reach 100% and 96.57% ***,it is a try to use new means for fault diagnosis on railway point machines,which can also provide references for similar fields.

关键词： Fault diagnosis Vibrations Support vector machines Diversity reception Switches Feature extraction Rail transportation

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Influence of Nozzle Distribution on Micro-jet 1

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7th International Conference on Nanomanufacturing, nanoMan2021

作者： Yin, Lianmin Dai, Yifan Hu, Hao Xue, Shuai Guan, Chaoliang Laboratory of Science and Technology on Integrated Logistics Support College of Intelligence Science and Technology National University of Defense Technology Changsha410073 China Hu’nan Key Laboratory of Ultra-Precision Machining Technology Changsha410073 China

ISBN: (数字)9789811919183

ISBN: (纸本)9789811919176

Micro-jet is an effective ultra-smooth polishing method, but its polishing effect is affected by many factors. In this paper, the effects of different distributions of nozzles on the workpiece were investigated by finite element software, including uniform distribution, from large to small (with the edge as the starting point) and from small to large. The results showed that: 1. The pressure of uniformly distributed nozzles on the surface of the workpiece is generally uniform, but there will be local concentration in the middle, and the flow rate is uniform;2. The edge pressure of the nozzles distributed from large to small is greater than the intermediate pressure, the distribution is not uniform, and the flow rate fluctuates greatly;3. The middle pressure of the nozzle distributed from large to small is greater than the edge pressure, nearly Gaussian-shaped distribution, and the flow rate is relatively uniform, which has the best polishing performance. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Nozzles

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The influences of mirror deflection on the surface shapes of different MEMS mirror structures 7

The influences of mirror deflection on the surface shapes of...

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7th Optics Young Scientist Summit, OYSS 2024

作者： Zhang, Meng Wang, Weiping Cao, Jing Liu, Song Hu, Xiaoyan Yang, Cheng Ao Information Science Academy of China Electronics Technology Group Cooperation Beijing100042 China National Key Laboratory of Integrated Circuits and Microsystems Beijing100042 China Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China

ISBN: (数字)9781510688377

ISBN: (纸本)9781510688360

The MEMS Fabry-Perot cavity length can be tuned by moving the MEMS micro mirror to achieve narrowband filtering of the incident continuous spectrum. However, the mirror surface shape would be changed with the deflection of the MEMS micro mirror, affecting the bandwidth and transmittance of the transmission spectrum. By using finite element modeling and simulation, the variation of the surface shapes of different MEMS mirror structures with the mirror deflection were studied. The stress distribution introduced by the mirror deflection were also characterized and the reason for the variation of the surface shapes were also analyzed. By selecting an appropriate elastic beam mounted on the movable micro mirror, the influence of stress introduced by the mirror deflection on the mirror surface shapes could be reduced. The sensitivity of the spectrum filtering performance to the mirror deflection could be lowered to improve the robustness. © 2025 SPIE.

关键词： Fabry-Perot interferometers

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Nonlinear three-magnon scattering in low-damping La_(0.67)Sr_(0.33)MnO_(3)thin films

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Chinese Physics B 2023年第10期32卷 139-144页

作者：张跃林盛路通陈济雷王婕朱增泰袁润东鲁京迪王涵晨郝思洁陈鹏于国强韩秀峰于海明 Fert Beijing Institute MIIT Key Laboratory of SpintronicsSchool of Integrated Circuit Science and EngineeringBeihang UniversityBeijing 100191China International Quantum Academy Shenzhen 518048China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518048China Department of Physics Beijing Normal UniversityBeijing 100191China Songshan Lake Materials Laboratory Dongguan 523808China Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsUniversity of Chinese Academy of SciencesChinese Academy of SciencesBeijing 100190China

Three-magnon scattering,a nonlinear process in which a high-energy magnon splits into two low-energy magnons with energy and momentum conservation,has been widely studied in the magnonics ***,we report experimental observation of nonlinear three-magnon scattering in La_(0.67)Sr_(0.33)MnO_(3)thin films with low magnetic damping(~10^(-4))by all-electric and angle-resolved spin wave *** reflection spectra of the spin wave resonance with high-power excitation at Damon–Eshbach configuration demonstrate a scattering regime with gradual signal disappearance,where a magnon of Damon–Eshbach mode decays into two magnons of volume mode above the threshold power(-10 dBm)of the injected *** nonlinear scattering is only allowed at low-field regime and the calculated dispersions of dipole-exchange spin wave claim the mechanism of allowed and forbidden three-magnon *** films and heterostructures of La_(0.67)Sr_(0.33)MnO_(3)have been already demonstrated with rich physical phenomena and great versatility,in this work the nonlinear magnetic dynamics of La_(0.67)Sr_(0.33)MnO_(3)thin films is revealed,which offer more possibility for applications to oxide magnonics and nonlinear magnonic devices.

关键词： spin wave resonance nonlinear scattering LSMO films microwave antenna

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Distributed Robust Adaptive control for Cooperative Formation of Uncertain Multiple Fixed-Wing UAVs with Disturbances 5th

Distributed Robust Adaptive Control for Cooperative Formati...

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5th Chinese Conference on Swarm Intelligence and Cooperative control, CCSICC 2021

作者： Zhi, Yongran Zheng, Zongzhun Guan, Bin Liu, Lei Fan, Huijin National Key Laboratory of Science and Technology on Multispectral Information Processing School of Artificial Intelligence and Automation Huazhong University of Science and Technology Wuhan430074 China Beijing Aerospace Automatic Control Institute Beijing100854 China Huazhong University of Science and Technology Wuhan430074 China

ISBN: (纸本)9789811939976

This paper investigates the formation problem of multiple fixed-wing unmanned aircraft vehicles (UAVs) based on virtual leader structure, subjecting to unknown uncertainties and bounded disturbances. A distributed model reference robust adaptive controller (DMRRAC) is proposed to swiftly construct the formation under the existence of flight dynamical uncertainties and external bounded disturbances. An adaptive projection formation operator and a novel high-frequency robust term can guarantee the system to be uniformly asymptotically stable in a complex situation, which can also enhance the performance of the system such as robustness. Simulation confirms the feasibility and effectiveness of the proposed distributed control algorithm. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Fixed wings

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Cotton metabolism regulatory network:Unraveling key genes and pathways in fiber development and growth regulation

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Plant Communications 2025年第3期6卷 159-173页

作者： Zhao Liu Liqiang Fan Sheng Shu Ghulam Qanmber Eryong Chen Jinquan Huang Fuguang Li Zuoren Yang Zhengzhou Research Base State Key Laboratory of Cotton Bio-breeding and Integrated UtilizationSchool of Agricultural SciencesZhengzhou UniversityZhengzhou 450001HenanChina State Key Laboratory of Cotton Bio-breeding and Integrated Utilization Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyang 455000HenanChina Xinjiang Key Laboratory of Crop Gene Editing and Germplasm Innovation Institute of Western Agricultural of CAASChangjiXinjiang 831100China Henan Engineering Research Center of Crop Genome Editing School of AgricultureHenan Institute of Science and TechnologyXinxiang 453000HenanChina National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China

Cotton(Gossypium hirsutum L.)is one of the world’s most important commercial ***,the dynamics of metabolite abundance and potential regulatory networks throughout its life cycle remain poorly *** this study,we developed a cotton metabolism regulatory network(CMRN)that spans various developmental stages and encompasses 2138 metabolites and 90309 expressed genesin upland *** integrating high-resolution spatiotemporal metabolome and transcriptome data,we identified 1958 differentially accumulated metabolites and 13597 co-expressed differentially expressed genes between the dwarf mutant pagoda1 and its wild-type counterpart Zhongmiansuo *** metabolites and genes were categorized into seven clusters based on tissue-specific accumulation patterns and gene expression profiles across different developmental *** Encyclopedia of Genes and Genomes enrichment analysis revealed significant differential enrichment in the fatty acid elongation pathway,particularly in *** differential involvement of genes and metabolites in very-long-chain fatty acid(VLCFA)synthesis led to the identification of GhKCS1b_Dt as a key *** of GhKCS1b_Dt significantly promoted fiber elongation,while its silencing markedly inhibited cotton fiber growth,affirming its positive regulatory role in fiber *** dataset provides a valuable resource for further research into metabolic pathways and gene regulatory networks,offering novel insights for advancing cotton breeding strategies.

关键词： CMRN cotton metabolome transcriptome pag1 metabolic regulatory network

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Enhanced carbon capture with motif-rich amino acid loaded defective robust metal-organic frameworks

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Nano Research 2024年第3期17卷 2004-2010页

作者： Qi-Ye Ju Jia-Jia Zheng Li Xu Hai-Yan Jiang Zi-Qian Xue Lu Bai Yang-Yang Guo Ming-Shui Yao Ting-Yu Zhu State Key Laboratory of Multi-phase Complex Systems CAS Key Laboratory of Green Process and EngineeringBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Laboratory of Theoretical and Computational Nanoscience National Center for Nanoscience and TechnologyChinese Academy of SciencesBeijing 100190China School of Rare Earths University of Science and Technology of ChinaHefei 230026China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Institute for Integrated Cell-Material Sciences Kyoto UniversityInstitute for Advanced StudyKyoto UniversityYoshidaUshinomiya-choSakyokuKyoto 606-8501Japan

The use of metal-organic frameworks(MOFs)as solid adsorption materials for carbon capture is promising,but achieving efficient and reversible adsorption with a balance of capacity and selectivity for carbon dioxide(CO_(2))over N_(2) remains a *** take full advantage of the strong channel traffic and robustness of MOFs with relatively small pores,it is highly necessary to employ a defect-engineering strategy to construct a broader channel structure that can facilitate the loading of functional motif-rich amino acids(AAs).This strategy can greatly enhance the CO_(2) adsorption performance of *** this study,motif-rich amino acids are loaded into the defective and robust porous frameworks via combined defect-engineering and post-synthetic *** defective Zr/Hf-MOF-808s modified with AAs,especially for the 18 mol%4-nitroisophthalic acid,generated defective products allowing for the loading of L-serine(L-Ser).This modification resulted in a significant improvement in both the adsorption capacity(248%improvement at 298 K,100 kPa)and the selectivity of CO_(2)/N_(2) using the ideal adsorbed solution theory(IAST),with the selectivity increasing to 120.55 and 38.27 at 15 and 100 kPa,respectively,while maintaining good cycling *** functional theory(DFT)simulation,CO_(2) temperature-programmed desorption(CO_(2)-TPD),and in situ Fourier transform infrared spectroscopy(FTIR)were further employed to have a better understanding of the enhanced CO_(2) adsorption ***,unlike the AAs loaded pristine MOF-808s that showed the best CO_(2) adsorption capacity with the loading of short and small glycine(Gly),the broadened channel size in our work enables the loading of functional motif-rich L-serine,which brings more active binding sites,improving CO_(2) adsorption.

关键词： carbon capture and storage metal-organic framework(MOF) amino acids(AAs) defect-engineering motif-rich

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