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Applied Mathematics and Mechanics(English Edition) 2024年第5期45卷 873-890页

作者： Jinghu tang Chaofeng LI Jin ZHOU Zhiwei WU school of Mechanical Engineering&Automation Northeastern UniversityShenyang 110819China Key Laboratory of Vibration and Control of Aero-Propulsion systems of Ministry of Education of China Northeastern UniversityShenyang 110819China school of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China

The modeling and self-excited vibration mechanism in the magnetic levitation-collision interface coupling system are *** effects of the control and interface parameters on the system's stability are *** frequency range of self-excited vibrations is investigated from the energy point of *** phenomenon of self-excited vibrations is elaborated with the phase *** corresponding control strategies are briefly analyzed with respect to the vibration *** results show that when the levitation objects collide with the mechanical interface,the system's vibration frequency becomes larger with the decrease in the collision gap;when the vibration frequency exceeds the critical frequency,the electromagnetic system continues to provide energy to the system,and the collision interface continuously dissipates energy so that the system enters the self-excited vibration state.

关键词： magnetic levitation coupling system self-excited vibration mechanical interface vibration frequency

The structure Entropy of social Networks

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Journal of systems science & Complexity 2024年第3期37卷 1147-1162页

作者： LI Zhenpeng YAN Zhihua YANG Jian tang Xijin school of Electronics and Information Engineering Taizhou UniversityLinhai 317000China Academy of Mathematics and systems science Chinese Academy of SciencesBeijing 100190China Yunnan Key Laboratory of smart City in Cyberspace security Yuxi Normal UniversityYuci 653100China University of Chinese Academy of sciences Beijing 100039China

Micro triadic structure is an important motif and serves the building block of complex *** this paper,the authors define structure entropy for a social network and explain this concept by using the coded triads proposed by Davis and Leinhardt in *** proposed structure entropy serves as a new macro-evolution index to measure the network’s stability at a given *** analysis of real-world network structure entropy discloses rich information on the mechanism that yields given triadic motifs frequency *** paper illustrates the intrinsic link between the micro dyadic/triadic motifs and network structure ***,the authors find that the high proportion of reciprocity and transitivity results in the emergence of hierarchy,order,and cooperation of online social networks.

关键词： Dyadic and triadic motifs network structure entropy reciprocity and transitivity

Mechanism of Endogenous Peptide PDYBX1 and Precursor Protein YBX1 in Hirschsprung’s Disease

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Neuroscience Bulletin 2024年第6期40卷 695-706页

作者： Qiaochu sun Zhengke Zhi Chenglong Wang Chunxia Du Jie tang Hongxing Li Weibing tang Department of Pediatric surgery Children’s Hospital of Nanjing Medical UniversityNanjing210008China

Endogenous peptides,bioactive agents with a small molecular weight and outstanding absorbability,regulate various cellular processes and ***,their role in the occurrence of Hirschsprung’s disease(HsCR)remains ***,we found that the expression of an endogenous peptide derived from YBX1(termed PDYBX1 in this study)was upregulated in the aganglionic colonic tissue of HsCR patients,whereas its precursor protein YBX1 was *** shown by Transwell and cytoskeleton staining assays,silencing YBX1 inhibited the migration of enteric neural cells,and this effect was partially reversed after treatment with ***,immunoprecipitation and immunofluorescence revealed that ERK2 bound to YBX1 and *** of YBX1 blocked the ERK1/2 pathway,but upregulation of PDYBX1 counteracted this effect by binding to ERK2,thereby promoting cell migration and *** together,the endogenous peptide PDYBX1 may partially alleviate the inhibition of the ERK1/2 pathway caused by the downregulation of its precursor protein YBX1 to antagonize the impairment of enteric neural ***1 may be exploited to design a novel potential therapeutic agent for HsCR.

关键词： Hirschsprung’s disease YBX1 Endogenous peptide PDYBX1 Enteric neural cell

Numerical study on the Impacts of Hydrometeor Processes on the “21·7” Extreme Rainfall in Zhengzhou Area of China

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Advances in Atmospheric sciences 2024年第10期41卷 2061-2078页

作者： Wenhua GAO Chengyin LI Lanzhi tang state Key Laboratory of severe Weather Chinese Academy of Meteorological Sciences

The impacts of hydrometeor-related processes on the development and evolution of the “21·7” extremely heavy rainfall in Zhengzhou were investigated using WRF simulations. surface precipitation was determined by the hydrometeor microphysical processes(all microphysical source sink terms of hydrometeors) and macrophysical processes(local change and flux convergence of hydrometeors). The contribution of hydrometeor macrophysical processes was commonly less than10%, but could reach 30%–50% in the early stage of precipitation, which was largely dependent on the size of the study area. The macrophysical processes of liquid-phase hydrometeors always presented a promotional effect on rainfall, while the ice-phase hydrometeors played a negative role in the middle and later stages of precipitation. The distributions of microphysical latent heat corresponded well with those of buoyancy and vertical velocity(tendency), indicating that the phase-change heating was the major driver for convective development. Reasonable diagnostic buoyancy was obtained by choosing an area close to the convective size for getting the reference state of air. In addition, a new dynamic equilibrium involving hydrometeors with a tilted airflow was formed during the heavy precipitation period(updraft was not the strongest). The heaviest instantaneous precipitation was mainly produced by the warm-rain processes. sensitivity experiments further pointed out that the uncertainty of latent heat parameterization(±20%) did not significantly affect the convective rainfall. While when the phase-change heating only altered the temperature tendency, its impact on precipitation was remarkable. The results of this study help to deepen our understanding of heavy rainfall mechanisms from the perspective of hydrometeor processes.

关键词： buoyancy heavy precipitation hydrometeor processes latent heat

Upper and Lower Bounds of the α-Universal Triple I Method for Unified Interval Implications

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Computers, Materials & Continua 2024年第4期79卷 1063-1088页

作者： Yiming tang Jianwei Gao Yifan Huang school of Computer and Information Hefei University of TechnologyHefei230601China Department of Electrical and Computer Engineering University of AlbertaEdmontonAB T6R 2V4Canada

Theα-universal triple I(α-UTI)method is a recognized scheme in the field of fuzzy reasoning,whichwas proposed by our research group *** robustness of fuzzy reasoning determines the quality of reasoning algorithms to a large extent,which is quantified by calculating the disparity between the output of fuzzy reasoning with interference and the output without ***,in this study,the interval robustness(embodied as the interval stability)of theα-UTI method is explored in the interval-valued fuzzy *** begin with,the stability of theα-UTI method is explored for the case of an individual rule,and the upper and lower bounds of its results are estimated,using four kinds of unified interval implications(including the R-interval implication,the s-interval implication,the QL-interval implication and the interval t-norm implication).Through analysis,it is found that theα-UTI method exhibits good interval stability for an individual ***,the stability of theα-UTI method is revealed in the case of multiple rules,and the upper and lower bounds of its outcomes are *** results show that theα-UTI method is stable for multiple rules when four kinds of unified interval implications are used,***,theα-UTI reasoning chain method is presented,which contains a chain structure with multiple *** corresponding solutions and their interval perturbations are *** is found that theα-UTI reasoning chain method is stable in the case of chain *** application examples in affective computing are given to verify the stability of theα-*** summary,through theoretical proof and example verification,it is found that theα-UTImethod has good interval robustness with four kinds of unified interval implications aiming at the situations of an individual rule,multi-rule and reasoning chain.

关键词： Fuzzy reasoning the CRI method the triple I method fuzzy implication interval robustness

Microglial autophagy in neurogenesis:a new player in Alzheimer's disease

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Neural Regeneration Research 2024年第12期19卷 2573-2574页

作者： Xin tang Aarti Nagayach Chenran Wang Department of Cancer Biology University of Cincinnati College of MedicineCincinnatiOHUSA

While extensive studies have illuminated the impact of Alzheimer's disease(AD) on neuronal survival,there is growing evidence that abnormal postnatal neurogenesis in early AD brains contributes to disease *** neurogenesis serves as a mechanism to replace dead or damaged *** neurons generated from neural stem cells(NsCs) in the subgranular zone(sGZ) of the dentate gyrus integrate into the existing hippocampal circuit.

关键词： Alzheimer replace integrate

A justice and innovative way ahead of consumption-based emission accounting approach

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science China Earth sciences 2024年第10期67卷 2999-3010页

作者： Qun sHEN Hongbo DUAN Yun tang Linbing tang Li sHANG Xinyu DOU Wei WEI Weiqiang CHEN Zhu LIU state Key Laboratory of Low Carbon Catalysis and Carbon Dioxide Utilization CAS Key Laboratory of Low-Carbon Conversion Science&EngineeringShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China school of Economics&Management University of Chinese Academy of SciencesBeijing 100190China Key Lab of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Department of Earth system science Tsinghua UnivesityBeijing 100084China

Carbon emission accounting is an important basis for global climate *** on the consumption-based accounting(CBA)method,the characteristics of carbon flow between national,regional,and product processes could be more clearly ***,CBA is more conducive to clarifying the attribution of responsibilities between producers and consumers,with the principles of fairness and *** accounting for carbon emissions in typical countries from 1990 to 2019,we found that the CBA emissions are higher than the production-based accounting(PBA)emissions in major developed countries,while the results are reversed for developing *** the past 30 years,the CBA emissions in targeted developed countries generally have shown a downward trend,while in developing countries,they have shown an upward *** emissions in China have shown a continuous growth trend from 1990 to 2019,but the pace has slowed down significantly over the last ***,the embodied carbon intensity of China’s exports continues to decline,indicating that China is providing more green and low-carbon products to the *** the PV industry as an example,this study further reveals the contribution of specific product industries to the country’s carbon transfer through product carbon footprint *** order to provide a scientific basis for global mitigation and climate governance,it is urgent to innovate a scientific,practical,and standardized CBA technology system.

关键词： Consumption-based accounting Production-based accounting Carbon transfer Carbon footprint

stability analysis and stabilization of semi-Markov jump linear systems with unavailable sojourn-time information

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science China(Information sciences) 2024年第7期67卷 211-223页

作者： Xiaotai WU Yang tang shuai MAO Ying ZHAO school of Mathematics and Physics Anhui Polytechnic University Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of EducationEast China University of Science and Technology

This study addresses the stability and stabilization problems of discrete-time semi-Markov jump linear systems(s-MJLss) with unavailable sojourn-time information. The sojourn-time probability mass functions(s-TPMFs) of discrete-time semi-Markov chains are no longer confined to the geometric distribution, and it is difficult to obtain accurate and comprehensive information for s-TPMFs in practice. This is because s-TPMFs are usually deduced from the statistical characteristics according to the sampled-data, while adequate samples are often costly and time consuming. In this study, when the s-TPMFs for semi-Markov chains are assumed to be unavailable, the σ-error mean square stability is investigated for discrete-time s-MJLss with some widely used assumptions; for semi-Markov chains, only the transition probability matrix of the embedded chain is used. In addition, the existence conditions of the effective controller are provided for closed-loop systems without using the information of s-TPMFs. Numerical examples are presented to illustrate the validity of the obtained theoretical results.

关键词： semi-Markov chain semi-Markov jump linear systems $\sigma$-error mean square stability unavailable sojourn-time information

Response and assembly of abundant and rare taxa in Zaopei under different combination patterns of Daqu and pit mud:from microbial ecology to Baijiu brewing microecosystem

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Food science and Human Wellness 2024年第3期13卷 1439-1452页

作者： Yu Mu Jun Huang Rongqing Zhou suyi Zhang Hui Qin Hanlan tang Qianglin Pan Huifang tang College of Biomass science and Engineering Sichuan UniversityChengdu 610065China National Engineering Research Center of solid-state Manufacturing Luzhou 646000China Luzhou Laojiao Co. Ltd.Luzhou 646699China

The quality and aroma of strong-flavor Baijiu are mainly dependent on Daqu,pit mud(PM),and the interaction of ***,little is known about how their combination patterns affect the microbiome and metabolome of Zaopei,especially the metabolic function of rare ***,an experiment on industrial size was designed to assess the effects of 6 combinations(3 kinds of Daqu×2 kinds of PM)on the composition and assembly of different taxa,as well as the flavor *** results showed that Zaopei's microbiota was composed of a few abundant taxa and enormous rare taxa,and rare bacterial and abundant fungal subcommunities were significantly affected by combination *** assembly processes of abundant/rare taxa and bacterial/fungal communities were distinct,and environmental changes mediated the balance between stochastic and deterministic processes in rare bacteria ***,specific combination patterns improved the flavor quality of Zaopei by enhancing the interspecies interaction,which was closely related to rare taxa,especially rare *** findings highlighted that rare bacteria might be the keystone in involving community interaction and maintaining metabolic function,which provided a scientific foundation for better understanding and regulating the brewing microbiota from the viewpoint of microbial ecology.

关键词： Bioaugmented Daqu Artificial pit mud Abundant and rare taxa Community assembly Metabolic function

Water–solid contact electrification and catalysis adjusted by surface functional groups

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Nano Research 2024年第4期17卷 3344-3351页

作者： Yusen su Andy Berbille Zhong Lin Wang Wei tang CAs Center for Excellence in Nanoscience Beijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing100083China school of Nanoscience and Technology University of Chinese Academy of SciencesBeijing100049China Georgia Institute of Technology AtlantaGA 30332-0245USA

Chemical functional groups on solid surfaces greatly influence contact electrification(CE)at water–solid *** studies of their effects mainly swapped materials or bonded related molecules to a substrate,introducing other factors of *** work aims at unambiguously demonstrating the role of functional groups in water-polymer *** study the contribution of functional groups,by using ion coupled plasma etching to modify a high-density polyethylene(HDPE)film,a polymer with a naturally quasi-null charge transfer ***(HDPE–F)and hydroxyl(HDPE–OH)functional groups are generated and endowed HDPE with charge withdrawing ***–F withdraws 2.5–2.7 times more charges than HDPE–***,the surface charges accumulated generate electrostatic forces,altering the droplets *** phenomenon provides another approach to study CE,helping to evaluate the contribution of electrons to solid–liquid ***,employing HDPE–F to perform contact-electro-catalysis shows its activity is 2.4 times higher than that of commercial fluorinated films.

关键词： contact-electro-catalysis charge transfer solid–liquid interfaces contact electrification