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Modified dynamic event-triggered scaled formation control for multi-agent systems via a sparrow search algorithm based co-design algorithm

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Frontiers of Information Technology & Electronic Engineering 2024年第2期25卷 197-213页

作者： yanping yANG Siyu MA dawei LI Jinghui SUo College of Information Science and Technology Donghua UniversityShanghai201620China Engineering Research Center of Digitized Textile&Apparel Technology Donghua UniversityShanghai201620China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Information Science and TechnologyDonghua UniversityShanghai201620China

This paper is concerned with the scaled formation control problem for multi-agent systems(MASs)over fixed and switching ***,a modified resilient dynamic event-triggered(DET)mechanism involving an auxiliary dynamic variable(ADV)based on sampled data is *** the proposed DET mechanism,a random variable obeying the Bernoulli distribution is introduced to express the idle and busy situations of communication ***,the operation of absolute value is introduced into the triggering condition to effectively reduce the formation ***,a scaled formation control protocol with the proposed resilient DET mechanism is designed over fixed and switching *** scaled formation error system is modeled as a time-varying delay ***,several sufficient stability criteria are derived by constructing appropriate Lyapunov-Krasovskii functionals(LKFs).A co-design algorithm based on the sparrow search algorithm(SSA)is presented to design the control gains and triggering parameters ***,numerical simulations of multiple unmanned aerial vehicles(UAVs)are presented to validate the designed control method.

关键词： Scaled consensus Formation control Dynamic event-triggered scheme Switching topology

Supplementation of Lycium barbarum residue increases the growth rate of Tan sheep by enhancing their feed intake and regulating their rumen microbiome and metabolome

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Journal of Integrative Agriculture 2024年第9期23卷 3129-3144页

作者： yajun Zhang Xiao Chang Bing Wang dawei Wei Rongzhen Zhong yansheng Guo Min Du Guijie Zhang College of Forestry and Prataculture Ningxia UniversityYinchuan 750021China Jilin Provincial Key Laboratory.of Grassland Farming Northeast Institute of Geography and AgoecologyChinese Academy of SciencesChangchun 130102China State Key Laboratory.of Animal Nutrition/College of Animal Science and Technology China Agricultural UniversityBeijing 100193China College of Animal Science and Technology Ningxia UniversityYinchuan 750021China Nutrigenomics and Growth Biology Laboratory Department of Animal SciencesWashington State UniversityPullmanWA 99164USA

Lycium barbarum residue(LBR),a by-product of *** processing,is packed with bioactive components and can be potentially utilized as a feed additive in animal ***,the fundamental understanding of its effectiveness on livestock animals is still lacking,particularly in *** explore the effects of LBR on the growth performance,rumen fermentation parameters,ruminal microbes and metabolites of Tan sheep,sixteen fattening rams(aged 4 mon)were fed a basal diet(CoN,n=8)or a basal diet supplemented with 5%LBR(LBR,n=8).The experiment lasted for 70 d,with 10 d adaptation period and 60 d treatment *** results showed that the LBR enhanced the average daily feed intake,average daily gain(Potal volatile fatty acids(Ponia-nitrogen concentration and rumen pH value(Ponally,the LBR improved the relative abundances of Prevotella,Succiniclasticum,Ruminococcus,Coprococcus,Selenomonas,and Butyrivibrio(Pof oscillospira and Succinivibrio(Polome(Py increasing the abundances of ruminal metabolites involved in amino acids(e.g.,L-proline,L-phenylalanine,L-lysine,and L-ty.osine),pyrimidine metabolism(e.g.,uridine,uracil,and thymidine),and microbial protein synthesis(e.g.,xanthine and hy.oxanthine).In conclusion,LBR had positive effects on the growth rate of Tan sheep as well as on rumen fermentation parameters,rumen microbiome and rumen metabolome.

关键词： Lycium barbarum residue rumen microbiome metabolomics growth performance Tan sheep

The Formation of So_(2) and Emission Reduction Solutions in the Preparation of a Hydrogenation Catalyst Support

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China Petroleum Processing & Petrochemical Technology 2024年第1期26卷 98-106页

作者： Hu Anpeng Wang Zhen yang Qinghe Hu dawei Gong yu Jia yanzi Dai Qiaoling Pu Ning SINoPEC Research Institute of Petroleum Processing Beijing 100083China Zibo Qimao Catalyst Co. Ltd.Zibo 255400China

The key reason for So_(2) formation during the production of a residue hydrogenation catalyst support was identified and subsequent emission reduction solutions were then investigated and verified *** results demonstrated that carbon-containing organic materials,including sesbania powder and cellulose,did not completely decompose over the temperature range of 350−600℃during the heating stage of the calcination process,but rather underwent a condensation reaction within the same temperature range to form carbon-containing species with a lower ratio of hydrogen to carbon and a higher condensation degree,which promoted the decomposition of sulfate to form So_(2).Systematic experimental work revealed that three different measures,i.e.,applying the staged calcination method,reducing the heating rate,and increasing the air flow rate,during the calcination process could all achieve the effect of reducing So_(2) emissions.

关键词： alumina sesbania powder cellulose sulfur dioxide

3D nano-printed geometric phase metasurfaces for generating accelerating beams with complex amplitude manipulation

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Science China(Physics,Mechanics & Astronomy) 2024年第6期67卷 86-95页

作者： Tianchen Tang Saima Kanwal yongzheng Lu yuelong Li Shuangbao Wu Lei Chen Ziheng Qian Zhouyu Xie Jing Wen dawei Zhang Research Center of optical Instrument and System Ministry of Education and Shanghai Key Lab of Modern Optical SystemUniversity of Shanghai for Science and TechnologyShanghai 200093China

Metasurface,a forefront in emerging optical devices,has demonstrated remarkable potential for complex amplitude manipulation of light ***,prevailing approaches face challenges in spatial resolution and complexities associated with integrating dynamic phases,impeding the simplified design and reproducible fabrication of ***,we introduce an innovative approach for complex amplitude modulation within 3D nano-printed geometric phase *** approach enables the generation of self-accelerating beams by encoding amplitude through phase-only manipulation,achieving high spatial ***,this method circumvents the conventional need to adjust the geometric parameters of metasurface unit structures for amplitude manipulation,offering a streamlined and efficient route for design and fabrication *** novel methodology holds promise for expedited and low-cost manufacturing of complex amplitude manipulation metasurfaces.

关键词： metasurface complex amplitude manipulation geometric phase 3D nano-printing Airy beam accelerating parabolic beam

Experimental Study.of Electrical‑Assisted Nanomachining of Monocrystalline Copper Using Customized Tungsten Tip

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Nanomanufacturing and Metrology 2024年第2期7卷 60-75页

作者： Tao Wang yanling Tian Zhilai Lu Weijie Wang Zhao Zhang Guangwei Zhu Hui Tang dawei Zhang Key Laboratory.of Mechanism Theory and Equipment Design of Ministry.of Education Tianjin UniversityTianjin 300072China School of Engineering University of WarwickCoventry CV47ALUK State Key Laboratory.of High Performance Complex Manufacturing Central South UniversityChangsha 410083China State Key Laboratory.of Precision Electronic Manufacturing Technology and Equipment Guangdong University of TechnologyGuangzhou 510006China

As a promising micro/nanofabrication method,electrical-assisted nanomachining has obtained substantial attention due to its high material removal rate and attainable superior surface *** this study,a rectangular wave electrical signal was applied for nanomachining by a customized tungsten *** to the coupling effect between the electric field and mechanical force,the cutting depth of the machined grooves can be *** electrical-assisted groove processing,a depth of 270 nm and an aspect ratio of 0.6 on the copper sample can be *** influence of operation parameters including applied voltage,frequency,duty ratio,normal force and cutting speed on the machining performance was investigated in terms of the groove depth,width,aspect ratio,and surface *** potential machining mechanisms should be a combination of electric field force,nanoscale electric discharge,electric contact thermal effects,possible annealing behavior,and scraping and plowing actions induced by mechanical forces.

关键词： Tip-based nanofabrication Electrical-assisted machining Nanoscale scratching Machining parameters

Continuous Expression of Interferon Regulatory Factor 4 Sustains CD8^(+)T Cell Immunity against Tumor

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Research 2024年第3期2023卷 433-444页

作者： Anze yu Jinfei Fu Zheng yin Hui yan Xiang Xiao dawei Zou Xiaolong Zhang Xiongbing Zu Xian C.Li Wenhao Chen Immunobiology and Transplant Science Center Department of SurgeryHouston Methodist Research Institute and Institute for Academic MedicineHouston Methodist HospitalHoustonTXUSA Department of Urology First Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdongChina Systems Medicine and Bioengineering Department Houston Methodist Neal Cancer CenterHoustonTXUSA Department of Radiology Houston Methodist HospitalWeill Cornell MedicineHoustonTXUSA Department of Urology Xiangya HospitalCentral South UniversityChangshaHunanChina Department of Surgery Weill Cornell MedicineCornell UniversityNew YorkNYUSA.

T-cell-based immunotherapy is gaining momentum in cancer treatment;however,our comprehension of the transcriptional regulation governing T cell antitumor activity remains *** objective of this study was to explore the function of interferon regulatory factor 4(IRF4)in antitumor CD8^(+)T cells using the TRAMP-C1 prostate cancer and B16F10 melanoma *** achieve this,we generated an Irf4^(GFP-DTR) mouse strain and discovered that CD8^(+)tumor-infiltrating lymphocytes(TILs)expressing high levels of *** exhibited a more differentiated PD-1high cell *** administering diphtheria toxin to tumor-bearing Irf4^(GFP-DTR) mice,we partially depleted ***^(+)TILs and observed an accelerated tumor *** specifically explore the function of IRF4 in antitumor CD8^(+)T cells,we conducted 3 adoptive cell therapy(ACT)***,depleting ***^(+)CD8^(+)TILs derived from ACT significantly accelerated tumor growth,emphasizing their crucial role in controlling tumor ***,deleting the Irf4 gene in antitumor CD8^(+)T cells used for ACT led to a reduction in the frequency and effector differentiation of CD8^(+)TILs,completely abolishing the antitumor effects of ***,we performed a temporal deletion of the Irf4 gene in antitumor CD8^(+)T cells during ACT,starting from 20 days after tumor implantation,which significantly compromised tumor ***,sustained expression of IRF4 is essential for maintaining CD8^(+)T cell immunity in the melanoma model,and these findings carry noteworthy implications for the advancement of more potent immunotherapies for solid tumors.

关键词： sustained immunity implantation

Decade Milestone Advancement of Defect-Engineered g-C_(3)N_(4) for Solar Catalytic Applications

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Nano-Micro Letters 2024年第4期16卷 153-218页

作者： Shaoqi Hou Xiaochun Gao Xingyue Lv yilin Zhao Xitao yin ying Liu Juan Fang Xingxing yu Xiaoguang Ma Tianyi Ma dawei Su School of Mathematical and Physical Sciences Faculty of ScienceUniversity of Technology Sydney(UTS)SydneyNSW 2007Australia Laboratory.of Plasma and Energy Conversion School of Physics and Optoelectronic EngineeringLudong University186 Middle Hongqi RoadYantai 264025People’s Republic of China School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083People’s Republic of China Department of Chemistry The University of Tokyo7‑3‑1 HogoBunkyoTokyoJapan School of Science STEM CollegeRMIT UniversityMelbourneVIC 3000Australia

over the past decade, graphitic carbon nitride(g-C_(3)N_(4)) has emerged as a universal photocatalyst toward various sustainable carbo-neutral technologies. Despite solar applications discrepancy, g-C_(3)N_(4) is still confronted with a general fatal issue of insufficient supply.of thermodynamically active photocarriers due to its inferior solar harvesting ability and sluggish charge transfer dynamics. Fortunately, this could be significantly alleviated by the “all-in-one” defect engineering strategy, which enables a simultaneous amelioration of both textural uniqueness and intrinsic electronic band structures. To this end, we have summarized an unprecedently comprehensive discussion on defect controls including the vacancy/non-metallic dopant creation with optimized electronic band structure and electronic density, metallic doping with ultraactive coordinated environment(M–N_(x), M–C_(2)N_(2), M–o bonding), functional group grafting with optimized band structure, and promoted crystallinity with extended conjugation π system with weakened interlayered van der Waals interaction. Among them, the defect states induced by various defect types such as N vacancy, P/S/halogen dopants, and cyano group in boosting solar harvesting and accelerating photocarrier transfer have also been emphasized. More importantly, the shallow defect traps identified by femtosecond transient absorption spectra(fs-TAS) have also been highlighted. It is believed that this review would pave the way for future readers with a unique insight into a more precise defective g-C_(3)N_(4) “customization”, motivating more profound thinking and flourishing research outputs on g-C_(3)N_(4)-based photocatalysis.

关键词： Defect engineering g-C_(3)N_(4) Electronic band structures Photocarrier transfer kinetics Defect states

Understanding the rapid spread of antimicrobial resistance genes mediated by IS26

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mLife 2024年第1期3卷 101-109页

作者： Na Tang dawei Wei yuan Zeng Gang Zhang Chao Wang Jie Feng yuqin Song State Key Laboratory.of Microbial Resources Institute of MicrobiologyChinese Academy of SciencesBejingChina College of Life Science University of Chinese Academy of SciencesBeijingChina

Insertion sequences(ISs)promote the transmission of antimicrobial resistance genes(ARGs)across bacterial ***,their contributions and dynamics during the transmission of resistance remain *** this study,we selected is26 as a representative transposable element to decipher the relationship between ISs and ARGs and to investigate their transfer features and transmission *** retrieved 2656 translocatable IS26-bounded units with ARGs(tiS26-bUs-ARGs)in complete bacterial genomes from the NCBI RefSeq *** total,124 ARGs spanning 12 classes of antibiotics were detected,and the average contribution rate of IS26 to these genes was 41.2%.We found that IS26-bounded units(IS26-bUs)mediated extensive ARG dissemination within the bacteria of the Gammaproteobacteria class,showing strong transfer po-tential between strains,species,and even *** Is26-bUs expanded in bacterial populations over time,and their temporal expansion trend was significantly correlated with antibiotic *** wide dissemination could be due to the nonspecific target site preference of ***,we experimentally confirmed that the introduction of a single copy.of is26 could lead to the formation of a composite transposon mediating the transmission of“passenger”*** observations extend our knowledge of the IS26 and provide new insights into the mediating role of ISs in the dissemination of antibiotic resistance.

关键词： antibiotic consumption antibiotic resistance genes horizontal gene transfer insertion sequence IS26

Microbiologically influenced corrosion resistance enhancement of coppercontaining high entropy alloy Fe_(x)Cu_(1−x)CoNiCrMn against Pseudomonas aeruginosa

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International Journal of Minerals,Metallurgy and Materials 2024年第11期31卷 2488-2497页

作者： yuntian Lou Weiwei Chang yu Zhang Shengyu He Xudong Chen Hongchang Qian dawei Zhang Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China National Materials Corrosion and Protection Data Center University of Science and Technology BeijingBeijing 100083China BRI Southeast Asia Network for Corrosion and Protection(MoE) Shunde Innovation SchoolUniversity of Science and Technology BeijingFoshan 528399China School of Materials Science and Energy Foshan UniversityFoshan 528000China

To enhance the microbiologically influenced corrosion(MIC)resistance of FeCoNiCrMn high entropy alloy(HEAs),a series of Fe_(x)Cu_((1−x))CoNiCrMn(x=1,0.75,0.5,and 0.25)HEAs were *** characteristics,corrosion behavior(morphology.observation and electrochemical properties),and antimicrobial performance of Fe_(x)Cu_((1−x))CoNiCrMn HEAs were evaluated in a medium inoculated with typical corrosive microorganism Pseudomonas *** aim was to identify copper-containing FeCoNiCrMn HEAs that balance corrosion resistance and antimicrobial *** revealed that all Fe_(x)Cu_((1−x))CoNiCrMn(x=1,0.75,0.5,and 0.25)HEAs exhibited an FCC(face centered cubic)phase,with significant grain refinement observed in Fe_(0.75)Cu_(0.25)CoNiCrMn *** tests indicated that Fe_(0.75)Cu_(0.25)CoNiCrMn HEA demonstrated lower corrosion current density(i_(corr))and pitting potential(E_(pit))compared to other Fe_(x)Cu_((1−x))CoNiCrMn HEAs in ***-inoculated medium,exhibiting superior resistance to ***-microbial tests showed that after 14 d of immersion,Fe_(0.75)Cu_(0.25)CoNiCrMn achieved an antibacterial rate of 89.5%,effectively inhibiting the adhesion and biofilm formation of ***,thereby achieving resistance to MIC.

关键词： microbiologically influenced corrosion Pseudomonas aeruginosa high entropy alloys antibacterial property