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derived sequences of the (n, j)-bonacci sequences

NONLINEArITY 2025年第3期38卷 035006-035006页

作者： Huang, Yuke Wen, Zhiying Beijing Univ Posts & Telecommun Sch Sci Beijing 100876 Peoples R China Beijing Univ Posts & Telecommun Key Lab Math & Informat Network Minist Educ Beijing 100876 Peoples R China Tsinghua Univ Dept Math Sci Beijing 100084 Peoples R China

derived sequence is an important theme in combinatorics on words. Let Sn,j be the infinite one-sided sequence over the alphabet {ad, 1 = 2 and j >= 1.

derived sequence is an important theme in combinatorics on words. Let Sn,j be the infinite one-sided sequence over the alphabet {ad, 1 <= d <= n} generated by the substitution sigma n,j(ad)=a1jad+1 for 1 <= dd sigma n,j(an)=a1, which are natural generalizations of the Fibonacci sequence. In this paper, we determine the derived sequences of the (n, j)-bonacci sequences Sn,j for n >= 2 and j >= 1.

关键词： combinatorics on words kernel word envelope word derived sequence the (n, j)-bonacci sequences

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Topological Equivalence Theorem and double-Copy for Chern-Simons Scattering Amplitudes

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research 2023年第2期2023卷 43-51页

作者： Yan-Feng Hang Hong-Jjan He Cong Shen Tsung-Dao Lee Institute and School of Physics and Astronomy Key Laboratory for Particle Astrophysics and Cosmology(MOE)Shanghai Key Laboratory for Particle Physics and CosmologyShanghai Jiao Tong UniversityShanghaiChina Department of Physics and Institute of Modern Physics Tsinghua UniversityBejingChina Center for High Energy Physics Peking UniversityBeijingChina Fields and Strings Laboratory Institute of PhysicsEcole Polytechnique Federale de LausanneLausanneSwitzerland

We study the mechanism of topological mass generation for 3-dimensional Chern-Simons gauge theories and propose a brand-new topological equivalence theorem to connect scattering amplitudes of the physical gauge boson ... 详细信息

关键词： expansion gauge topological

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Oxidative stress controls lncrNA-mediated sow granulosa cell functions in a FoxO1-dependent manner

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Journal of Animal Science and Biotechnology 2025年第2期16卷 565-576页

作者： Wenmin Sheng Miaomiao Wang Yuqi Li Zhenyu Sun Xing du Qifa Li College of Animal Science and Technology Nanjing Agricultural UniversityNanjing 210095China

Background Oxidative stress(OS)is involved in low female fertility by altering multi-omics such as the transcriptome,mirome,and lncrNome in follicular cells and follicular ***,the mechanism by which OS affects multiomics dynamics remains largely ***,we report that OS induces lncrNome dynamics in sow granulosa cells(sGCs),which is partially dependent on the transcription factor activity of its effector,*** A total of 2,283 putative FoxO recognition elements(FrEs)were identified in the promoters of 394 lncrNAs,accounting for 91.20%(394/432)of the lncrNAs regulated by *** and reporter assays showed that the effector FoxO1 mediated OS regulation of lncrNA transcription in a transcription factor activity-dependent ***,OS induces the transcription and function(e.g.,apoptosis)of NOrSF(non-coding rNA involved in sow fertility),a nuclear lncrNA involved in sGC function via ***,FoxO1 has been identified as a transcriptional activator of NOrSF in sGCs that interacts with the FrE motif of its ***,OS downregulates the transcription of CYP19A1,which encodes an essential enzyme for estrogen synthesis and 17β-estradiol(E2)release by sGCs via the FoxO1 and NOrSF ***,dysregulation of NOrSF transcription caused by 2 novel adjacent transitions in the promoter leads to decreased sow *** These results suggest a model of OS-stimulated lncrNome dynamics in sGCs and a new signaling pathway of OS that influences sGC function and sow fertility.

关键词： FoxO1 Granulosa cell apoptosis NOrSF Oxidative stress Sow fertility

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3d printing of thick film NTC thermistor from preceramic polymer composites for ultra-high temperature measurement

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JOUrNAL OF MATErIALS SCIENCE & TECHNOLOGY 2025年第8期211卷 1-10页

作者： Xu, Lida Zhou, Xiong Tang, Lantian Wang, Yusen Zhao, Fuxin Fu, Yanzhang Zeng, Yingjun Chen, Guochun Wu, Chao Wang, Lingyun Yang, Qingtao Sun, daoheng Chen, Qinnan Xiamen Univ Discipline Intelligent Instrument & Equipment Xiamen 361102 Peoples R China Xiamen Univ Dept Mech & Elect Engn Xiamen 361102 Peoples R China Xiamen Univ Fujian Micro Nano Mfg Engn Technol Res Ctr Xiamen 361102 Peoples R China China Aerodynam Res & Dev Ctr Mianyang 621000 Peoples R China

Integrating thick/thin film sensors into component systems has emerged as a prevalent approach for monitoring in extreme environments. However, traditional vapor deposition methods face obstacles, including complex fabrication processes and the degradation of sensitive materials at extremely high temperatures. This work delineates the development of a polysilazane composite dual-layer thick-film Negative Temperature Coefficient (NTC) thermistor characterized by its suitability for extreme temperatures and robust bond strength achieved through an advanced near-net-shape printing methodology. Hightemperature resistant La(Ca)CrO3 /polysilazane films were printed as the sensitive layer, while a dense layer formed by Cr2 O3 /polysilazane was used as the protective layer. The bilayer structure resulted in a 2.5-fold increase in adhesion strength compared to the single-layer La(Ca)CrO3 /polysilazane films. Experimental results indicate that the dual-layer thick-film NTC thermistor can be operated long-term at 1300 degrees C with a resistance drift rate of 0.9 %/h and survive short-term exposure to temperatures up to 1550 degrees C. As a proof of concept, this work applied 3d printing technology to fabricate a polysilazane composite dual-layer thick-film NTC thermistor on the surface of turbine blades and demonstrated its functionality under flame impingement at nearly 1300 degrees C. Such flexible 3d printing techniques pave the way for a new paradigm in manufacturing sensors capable of withstanding ultra-high temperatures. (c) 2024 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

关键词： La(Ca)CrO 3 Polysilazane thick film sensors Ultra-High Temperature 3d Printing

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Nuclear decay database in fission product mass region

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Chinese Physics C 2024年第7期48卷 176-180页

作者：黄小龙杨东葛智刚王香涵刘洋阳金永利李剑 China Nuclear Data Center China Institute of Atomic EnergyBeijing 102413China College of Physics Jilin UniversityChangchun 130012China

Accurate and reliable nuclear decay databases are essential for fundamental and applied nuclear research ***,decay data are not usually as accurate as expected and need ***,a new Chinese nuclear decay database in the fission product mass region(A=66−172)based on several major national evaluated data libraries has been developed under joint efforts in the CNdC working group.A total of 2358 nuclides have been included in this decay *** main data formats,namely ENSdF and ENdF,have been *** the total meanβandγenergies,available data from total absorption gamma ray spectroscopy measurements have been *** some nuclides without experimental measurements,theoretically calculated values have been added.

关键词： nuclear decay data evaluation database fission product mass region

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Ethylene thiourea exposure induces neurobehavioral toxicity in zebrafish by disrupting axon growth and neuromuscular junctions

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Journal of Environmental Sciences 2024年第3期137卷 108-119页

作者： Jingming Wang Zhiquan Yu Yongfeng Wang Yuanyao Chen Lin Xiao Yanjun Zong Qiyuan Feng Lianqi Peng Huiping Zhang Chunyan Liu Institute of Reproductive Health Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Ethylene thiourea(ETU)converted from ethylene bisdithiocarbamate(EBdC)fungicides has aroused great concern because of its prevalence and harmful *** ETU-induced neurotoxicity has been reported,the potential mechanisms remain *** study provided insights into its neurotoxic effects at environmentally relevant concentrations in *** findings showed that embryonic exposure to ETU decreased the hatch rate and delayed somite ***,ETU treatment significantly reduced the dark velocity in the locomotion *** upregulated tendency of the mitogen-activated protein kinases(MAPK)pathway(mknk1,atf4,mapkapk3)screened by transcriptome analysis implied motor neuron degeneration,which was validated by subsequent morphological observation,as axon length and branches were truncated in the 62.5μg/L ETU ***,although the rescue experiment with a p38 MAPK inhibitor(SB203580)successfully ameliorated axon degeneration,it failed to reverse the locomotion *** exploration of transcriptome data revealed the varied expression of presynaptic scaffold protein-related genes(pcloa,pclob,bsna),whose downregulation might impair the neuromuscular junction(NMJ).Therefore,we reasonably suspected that ETU-induced neurobehavioral deficits might result from the combined effects of the MAPK pathway and presynaptic *** this,we highlighted the necessity to take precautions and early interventions for susceptible ETU-exposed populations.

关键词： Ethylene thiourea(ETU) Behavior Neuromuscular junction MAPK signaling pathway Piccolo and bassoon danio rerio

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Passivity Enhancement Method for Grid-Connected Inverter Based on the Fixed-Frequency Phase-Locked Loop in Weak Grid

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JOUrNAL OF ELECTrICAL ENGINEErING & TECHNOLOGY 2025年第1期20卷 333-346页

作者： Yang, Longyue Cao, Tian Chen, Sheng Zhang, Song Ma, Shaodong Zhang, Ziyang Ni, Shijia China Univ Min & Technol Sch Elect Engn Xuzhou 221116 Peoples R China China Univ Min & Technol Sun Yueqi Honors Coll Xuzhou 221116 Peoples R China

In distributed generation system, the time-delayed phase-locked loop (Td-PLL) is a common method of grid synchronization in single-phase grid-connected inverters (GCIs). However, GCIs with Td-PLL are exposed to the greater risk of oscillatory instability in weak grid. In order to improve the adaptability of GCIs in weak grid, an inverter passivity enhancement method based on fixed-frequency improved second-order second-order generalized integral phase-locked loop (FF-ISO-SOGI-PLL) is proposed. Firstly, the influence of Td-PLL on the passivity of GCIs is analyzed by establishing a small signal impedance model. On this basis, the FF-ISO-SOGI-PLL with better stability and disturbance suppression ability is proposed, and the parameters of phase-locked loop (PLL) are optimally designed. The improvement effect of the impedance reshaping method based on FF-ISO-SOGI-PLL on the inverter passivity is analyzed. Finally, the effectiveness of the proposed method is verified by the comparative experiment.

关键词： Grid-connected inverter Weak grid Phase-locked loop Passivity Impedance reshaping

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An ultrasensitive angular interrogation metasurface sensor based on the TE mode surface lattice resonance

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Microsystems & Nanoengineering 2025年第1期11卷 237-246页

作者： Liye Li Wengang Wu National Key Laboratory of Advanced Micro and Nano Manufacture Technology Beijing 100871PR China School of Integrated Circuits Peking UniversityBeijing 100871PR China Beijing Advanced Innovation Center for Integrated Circuits Beijing 100871PR China Frontiers Science Center for Nano-optoelectronics Peking UniversityBeijing 100871PR China

The localized surface plasmon resonance metasurface is a research hotspot in the sensing field since it can enhance the light-matter interaction in the nanoscale,but the wavelength sensitivity is far from comparable with that of prism-coupled surface plasmon polariton(SPP).Herein,we propose and demonstrate an ultrasensitive angular interrogation sensor based on the transverse electric mode surface lattice resonance(SLr)mechanism in an all-metal *** theory,we derive the sensitivity function in detail and emphasize the refraction effect at the air-solution interface,which influences the SLr position and improves the sensitivity performance greatly in the *** the measurement,a broadband light source substitutes the single-wavelength laser generally used in traditional angular sensing,and the measured SLr wavelength of broadband illuminant at normal incidence is defined as the single wavelength,avoiding the sensitivity loss from the large *** experimental sensitivity can reach 4304.35°/rIU,promoting an order of magnitude compared to those of *** research provides a novel theory as well as the corresponding crucial approach to achieving ultrasensitive angular sensing.

关键词： localized surface plasmon resonance metasurface sensitivity function ultrasensitive angular interrogation metasurface sensor localized surface plasmon resonance wavelength sensitivity transverse electric mode surface lattice transverse electric mode surface lattice resonance

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Numerical prediction of oceanic mesoscale circulation and satellite altimetry data assimilation in the Western Pacific

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Science china Earth Sciences 2025年第3期68卷 909-927页

作者： Zhijin LI Jianfang FEI renhe ZHANG Xingliang JIANG Wenlong MA Xiaoping CHENG Lei LIU Guihua WANG Changlin CHEN Department of Atmospheric and Oceanic Sciences Institute of Atmospheric SciencesFudan UniversityShanghai 200438China Shanghai Key Laboratory of Ocean-land-atmosphere Boundary Dynamics and Climate Change Shanghai 200438China College of Meteorology and Oceanology National University of Defense TechnologyChangsha 410073China

Oceanic mesoscale circulations, primarily manifesting as eddies, typically span around 100 km horizontally and persist for about a month. These circulations represent the main component of oceanic kinetic energy and are referred to as the“weather” of the ocean. Forecasting efforts, focused on periods from a day to a month, target these mesoscale *** in eddy-resolving models, observing systems such as Argo floats and satellite altimeters, and data assimilation techniques have enabled systems like HYCOM in the United States and Mercator-Ocean in Europe to predict these features effectively. To further enhance mesoscale forecasting, the Pacific regional Ocean Forecast System(rPOFS) was developed for the pan-western Pacific(100°E–178°E, 20°S–50°N). Covering the dynamic Kuroshio and Kuroshio Extension regions, rPOFS features a 3 km horizontal grid and 67 vertical levels, with a multi-scale three-dimensional variational data assimilation(MS-3dVAr) scheme implemented. This system assimilates data from various sources, including satellite sea surface height and temperature, as well as subsurface profiles. In particular, an enhanced altimeter data assimilation methodology allows explicitly constraining both barotropic and baroclinic components of sea surface height. rPOFS demonstrates reliable forecasting of mesoscale circulations, with five-day forecasts accurately predicting eddies larger than 150 km and capturing features of the Kuroshio large meander. Forecasting errors are comparable to or smaller than those of HYCOM and Mercator-Ocean systems.

关键词： Western Pacific Ocean Ocean model Mesoscale eddy Numerical prediction Multiscale data assimilation Satellite altimetry

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Hierarchical Game Approach for Optimization of regional Integrated Energy System Clusters Considering Bounded rationality

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CSEE Journal of Power and Energy Systems 2024年第1期10卷 302-313页

作者： Lei dong Mengting Li Junjie Hu Sheng Chen Tao Zhang Xinying Wang Tianjiao Pu school of Electrical and Electronic Engineering North China Electric Power UniversityBeijing 102206China Department of Artificial Intelligence Application Research China Electric Power Research InstituteBeijing 100192China Key Laboratory of Smart Grid of Ministry of Education Key Laboratory of Smart Energy&Information Technology of Tianjin MunicipalityTianjin UniversityTianjin 300072China

regional integrated energy system(rIES)cluster,i.e.,multi-source integration and multi-region coordination,is an effective approach for increasing energy utilization *** hierarchical architecture and limited information sharing of rIES cluster make it difficult for traditional game theory to accurately describe their game ***,a hierarchical game approach considering bounded rationality is proposed in this paper to balance the interests of optimizing rIES cluster under privacy protection.A Stackelberg game with the cluster operator(CO)as the leader and multiple rIES as followers is developed to simultaneously optimize leader benefit and rIES utilization ***,a slight altruistic function is introduced to simulate the game behavior of each rIES agent on whether to cooperate or *** introducing an evolutionary game based on bounded rationality in the lower layer,the flaw of the assumption that participants are completely rational can be ***,for autonomous optimal dispatching,each rIES is treated as a prosumer,fexibly switching its market participation role to achieve cluster coordination *** studies on a rIES cluster verify effectiveness of the proposed approach.

关键词： Bounded rationality coordinated optimization evolutionary game regionaIilntegrated energysystem stackelberg game

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