Journal of Jishou University(Natural Sciences Edition)

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25 November 2025, Volume 46 Issue 6

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Mathematics

Upper Bounds of Sombor Energy of Circulant Graphs

ZHOU Houqing, REN Yong

Journal of Jishou University(Natural Sciences Edition), 2025, 46(6): 1-6.

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The Sombor energy of a graph is the sum of the absolute values of the eigenvalues of the Sombor matrix of the graph.By applying matrix theory and inequality properties,as well as the relationship between the Sombor energy of a graph and the energy of the graph,several new upper bounds of the Sombor energy of circulant graphs are obtained.

Information Fusion of Fuzzy Partial Order Relations on Continuous Information Sets

XIA Xiuyun, TIAN Hao

Journal of Jishou University(Natural Sciences Edition), 2025, 46(6): 7-14.

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Firstly,the basic concepts of evaluation decision on the classical fusion.Then,based on the definition and related properties of fuzzy partial order information fusion in the context of information system,different fuzzy partial order models have been established for evaluating decisions.Finally,information fusions for fuzzy partial order relationships on continuous information sets are discussed.

Upper Bound Estimation of the Infinity Norm for the Inverse of Strict α₁-Nekrasov Matrices

YI Hong, MO Hongmin, HE Yongfang

Journal of Jishou University(Natural Sciences Edition), 2025, 46(6): 15-23.

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A new class of non-singular H-matrices,strict α₁-Nekrasov matrices,is defined,and several methods for determining non-singular H-matrices are provided.By using the method of matrix splitting,combined with the estimation formula for the infinity norm of the inverse of Nekrasov matrix and properties of inequalities,an upper bound estimation for the infinity norm of the inverse of strictly α₁-Nekrasov matrix is provided.

Lattice Boltzmann Method for Solving the Generalized BBM-KdV Equation

ZHAO Mengmeng, DAI Houping, DONG Yaru

Journal of Jishou University(Natural Sciences Edition), 2025, 46(6): 24-34.

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For the generalized BBM-KdV equation with mixed derivative terms,based on the lattice Boltzmann method,by using Taylor expansion and Chapman-Enskog multiscale expansion technique,the local equilibrium distribution functions and correction functions in each direction of the one-dimensional and two-dimensional generalized BBM-KdV equations are obtained,and then the one-dimensional and two-dimensional generalized BBM-KdV equations are restored.Under the condition of monotonicity,the stability of the iterative format of the lattice Boltzmann method is proved.

Physics

Valley-Locked Edge States and Corner States in Dendritic Phonon Crystals#br#

LIU Shuqi, LIU Yuanli, KONG Peng, ZHAO Heping

Journal of Jishou University(Natural Sciences Edition), 2025, 46(6): 35-41.

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To study the acoustic wave propagation characteristics of two-dimensional higher-order topological insulators,a third-order dendritic valley phononic crystal structure with C3v symmetry was designed.By rotating the scatterers to break spatial symmetry,the valley Hall edge states were successfully realized.On this basis,a Zigzag interface topological waveguide and a triangular corner structure were constructed,and their acoustic wave transmission behaviors were analyzed.The results show that in the topological waveguide,the acoustic waves are effectively localized at the Zigzag interface;in the triangular corner structure,corner states with valley switchability and selectivity appear.

New Planck Constant Measurement Experiment Based on Visibility Principle

BAO Sha, LUO Jin, CHEN Qixuan, DAI Wenbin, WU Yunwen

Journal of Jishou University(Natural Sciences Edition), 2025, 46(6): 42-46.

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Based on the Newton ring interference experiment and the photoelectric effect experiment,the model simulation and data analysis of the principle of light interference experiment were carried out with the help of Matlab software.On this basis,the relationship between the maximum frequency of incident light and the cut-off voltage of six types of colored glass combined with incandescent lamps to form incident light sources with different wavelength ranges was explored.A new method for measuring Planck's constant based on the principle of visibility was proposed.Firstly,natural light was filtered through colored glass to obtain a small band light source.Secondly,the frequency range of the incident light was determined by Newton's rings interference to obtain the maximum frequency.Then,the cut-off voltage was measured by the zero current method,and the relationship between the maximum frequency of the incident light and the cut-off voltage was analyzed.Finally,Planck's constant h was calculated to be approximately 6.198×10-34 J·s,with a relative error of 6.46%.This method can measure Planck's constant in a simple environment.

Biological

Analysis of Codon Preference in Chloroplast Genome of Extremely Small Population Plant Gleditsia japonica var. velutina

YU Xiao, SUN Tian, GAO Chen

Journal of Jishou University(Natural Sciences Edition), 2025, 46(6): 47-56.

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In this study,Codon W,CUSP and R software were used to analyze the codon preference of Gleditsia japonica var. velutina chloroplast genome.Codon characteristic analysis revealed that the codons of chloroplast genes in Gleditsia japonica preferred to end with A or U,and the codon preference was relatively weak,with the effective codon number (ENC) ranging from 35.83 to 52.01.The correlation analysis among the parameters of the codon shows that the base composition of the first two positions of the codon is similar,but there is a significant difference from that of the third position.Analysis of relative synonymous codon usage revealed that the synonymous codons of chloroplast genes in Gleditsia japonica preferred to end with A or U.PR2-Plot analysis shows that the third base of the synonymous codon prefers to end with U or G (especially U).Optimal codon analysis shows that there are a total of 20 optimal codons,namely GCU,AGA,CGA,AAU,UGU,CAA,GAA,GGU,CAU,AUA,AUU,UUA,AAA,UUU,CCU,AGU,ACU,UAU,GUA and GUU.Neutral evolutionary analysis revealed that natural selection and mutational stress jointly shaped the codon preference of chloroplast genes in Gleditsia japonica.The analysis of ENC-Plot and ENC ratio showed that the influence of natural selection on codon preference was greater than that of mutational pressure.This indicates that natural selection is the main driving force for the formation of codon of chloroplast genes in Gleditsia japonica.

Bioinformatics Analysis of AQP Gene Family in Zea mays

ZHANG Jun, LI Xuye, WANG Rui, GUO Wenkai, YOU Haiyang

Journal of Jishou University(Natural Sciences Edition), 2025, 46(6): 57-66.

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To elucidate the biological functions of the aquaporin (AQP) gene family in the growth and development of Zea mays,bioinformatics methods were used to identify and analyze the members of AQP gene family in Zea mays.The results showed that there were 28 members in the maize AQP gene family;the AQP sequences of the members contained 211 to 302 amino acids and exhibit high stability;the AQP gene family in maize is primarily divided into four subfamilies:PIP,NIP,TIP,and SIP,containing 8,7,10,and 3 genes,respectively;the spatial structures of proteins in each subgroup are similar and highly conserved.

Effects of Antioxidant Enzyme Activities on Waterlogging Tolerance of Actinidia valvata Under Waterlogging Stress

XU Lingling, ZHANG Fanjing, LUO Qing, XU Yanling, GAO Jianyou, TIAN Xiaobo, ZHA Manrong, LIU Shibiao

Journal of Jishou University(Natural Sciences Edition), 2025, 46(6): 67-74.

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The root physiological changes of two kiwifruit varieties,Actinidia valvata "Shuixiu" and Actinidia chinensis "Hongyang",were investigated under artificial waterlogging treatments of 6 h (early stage),24 h (middle stage),and 120 h (late stage).The results showed that in the early stage of waterlogging,the malondialdehyde (MDA) molar concentration in the roots of Actinidia valvata "Shuixiu" was relatively high,but then remained at a low level.In the early and middle stages of waterlogging,the molar concentration of superoxide anion (O-2) in the roots of Actinidia valvata "Shuixiu" was relatively low.In the early and middle stages of waterlogging,the root activity of Actinidia valvata "Shuixiu" was relatively strong.In the early,middle,and late stages of waterlogging,the superoxide dismutase (SOD) activity in the roots of Actinidia valvata "Shuixiu" remained at a relatively high level.With the extension of waterlogging stress time,the catalase (CAT) activity in the roots of Actinidia valvata "Shuixiu" first increased and then decreased,while the peroxidase (POD) activity first decreased and then increased.The activities of the three antioxidant enzymes in the roots of the Actinidia valvata "Shuixiu" waterlogging treatment group were always significantly higher than those of the control group,and were also higher than those of the Actinidia chinensis "Hongyang" waterlogging treatment group overall.Actinidia valvata "Shuixiu" can rapidly respond to waterlogging stress and activate the antioxidant defense system in time to alleviate the oxidative damage caused by waterlogging stress,showing strong waterlogging tolerance.The above indicators of Actinidia chinensis "Hongyang" were basically opposite to those of Actinidia valvata "Shuixiu",showing weak waterlogging tolerance.

Ten New Recorded Species of Seed Plants in Hubei Province

ZHANG Yujie, LI Xinran, SHI Guo, ZHANG Daigui, ZHANG Menghua, ZHANG Li

Journal of Jishou University(Natural Sciences Edition), 2025, 46(6): 75-82.

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Through field surveys and specimen examinations,ten seed plants from Hubei province are confirmed as new records,which belong to ten genera of ten families,including Arisaema hunanense Hand.-Mazz.,Chrysosplenium nepalense D. Don,Ranunculus pseudopygmaeus Hand.-Mazz.,Vicia sepium L.,Ranunculus sinovaginatus W. T. Wang,Cardamine tangutorum O. E. Schulz,Impatiens oxyanthera Hook. f.,Meehania zheminensis A.Takano,Pan Li & G.H.Xia,Rubus rubrisetulosus Cardot and Symplocos groffii Merr..All voucher specimens are deposited in the Kunming Institute of Botany,Chinese Academy of Sciences.

Characteristic column：Study on Wuling Mountain Area

Progress and Prospects of Bamboo Slips Digitization:A Preliminary Exploration of Digital-Intelligent Development of Liye Qin Slips

FU Zhuosong, LIAO Bolin, LI Jianfeng, LONG Guangyu

Journal of Jishou University(Natural Sciences Edition), 2025, 46(6): 83-89.

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The development of digital-intelligent technologies for bamboo slip processing has led to systematic advances in key methods such as image enhancement,image segmentation,character recognition,and image restoration.These techniques have been summarized in terms of their application strategies and performance in handling bamboo slip images.In light of the archaeological context and preservation conditions for the Liye Qin slips,major challenges have been identified,including the lack of standardized protocols,low image quality,and difficulties in recognizing diverse character forms.A construction framework has been proposed,centered on standardized data modeling,intelligent image processing,in-depth character recognition,and damaged-text restoration.Furthermore,interdisciplinary collaboration among archaeology,computing,and paleography is recommended to build a sustainable and evolvable technological system for bamboo slip digitization,facilitating the refined organization and scholarly use of large-scale historical documentary resources.

Spatial-Temporal Characteristics of and Influencing Factors for Online Attention on High-Level Scenic Spots in the Western Hunan Region

LIU Shuiliang, HUANG Chao, DONG Xiaotong

Journal of Jishou University(Natural Sciences Edition), 2025, 46(6): 90-96.

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Based on the Baidu Index from 2017 to 2023,this study analyzes the spatio-temporal characteristics of and influencing factors for online attention on high-level scenic spots in Western Hunan region.The results show that:(1) The online attention in the past seven years has first declined and then risen;there are significant seasonal differences,with higher attention in summer and autumn;attention is higher during holidays and there is a clear precursor effect.(2) There is a large spatial difference in online attention,with a significant primacy effect,showing a relatively scattered distribution but a trend of concentrated development,with obvious distance effect and local consumption characteristics.(3) The main factors affecting the online attention include the resources,climate,the distance between the scenic spots and the tourist source areas,holiday systems,economic factors in the tourist source areas,and changes in the external tourism environment.