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Basic Characteristics of Karst Environment and the Research Progress JIA Xinglian, YANG Shunsong, WEI Changsheng, YU Yanghua Journal of Jishou University(Natural Sciences Edition)    2025, 46 (2): 58-67.   DOI: 10.13438/j.cnki.jdzk.2025.02.008 Abstract （771）      PDF（pc） （26482KB）（731）       Knowledge map    Save The basic characteristics of karst environment are summarized from six aspects:global distribution and key areas,main lithology and soil development,above-ground and underground duality and three-dimensional structure,basic traits of key elements,habitat heterogeneity and biodiversity,vulnerability of ecological environment and difficulty of management.Then,from the perspective of publication time and number,researchers and cooperation,research institutions,research hotspots,keywords clustering and emergence,the existing literature is reviewed,and the research status and changing trend are expounded.Finally,further research is prospected from integration of existing literature reports,enhancement of geology-soil-biological continuum,comparison of karst with other landforms,association of karst with national economic and social development,and comparison of karst in the north with that in south. Reference | Related Articles | Metrics | Comments（0）

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Exploration of Anti-Aging Mechanisms of the Panax ginseng-Atractylodes macrocephala Pair Based on Network Pharmacology HE Peiyi, LU Zhizhong, ZANG Linquan Journal of Jishou University(Natural Sciences Edition)    2025, 46 (2): 68-77.   DOI: 10.13438/j.cnki.jdzk.2025.02.009 Abstract （672）      PDF（pc） （9005KB）（241）       Knowledge map    Save To elucidate the anti-aging material basis and mechanisms of the Panax ginseng-Atractylodes macrocephala (Ginseng-White Atractylodes) herb pair,this study utilized network pharmacology approaches.Chemical components of the herb pair were obtained from the TCMSP database,and their corresponding targets were collected using Swiss Target Prediction database.Aging-related targets were identified from GeneCards,OMIM,DiGSee,and HAGR databases.The common aging targets between the herb pair were determined using Venny 2.1.A drug-component-target-disease network was constructed using Cytoscape 3.8.2,while a protein-protein interaction network was established via the STRING database.GO function and KEGG pathway enrichment analyses were conducted using the DAVID database.Results revealed that Ginseng contains 22 active components and Atractylodes macrocephala contains 7,collectively regulating 159 targets and 171 signaling pathways with anti-aging effects;key chemical components,including kaempferol,β-sitosterol,stigmasterol,inermin,and 3β-acetoxyatractylone,mediate anti-aging effects through signaling pathways involving JUN，AKT1，TNF，CASP3,and CYP2B6. Reference | Related Articles | Metrics | Comments（0）

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Differential Expression and Clinical Significance of MIA3 Based on Bioinformatics Analysis in Pan-Cancer CHEN Gonghua1, OU Pengfei, ZHEN Yao1, 3, XIA Jie1, MAN Jing Journal of Jishou University(Natural Sciences Edition)    2025, 46 (2): 78-89.   DOI: 10.13438/j.cnki.jdzk.2025.02.010 Abstract （448）      PDF（pc） （22772KB）（227）       Knowledge map    Save To elucidate the expression profile and role of MIA3 in pan-cancer,we collected data from TCGA and other databases and employed bioinformatics methods to explore the associations between MIA3 and clinical prognosis as well as immune-related characteristics in various cancers.Results showed that MIA3 expression was significantly upregulated in invasive breast cancer,bladder urothelial carcinoma,esophageal cancer,head and neck squamous cell carcinoma,renal clear cell carcinoma,mixed renal cancer,hepatocellular carcinoma,lung adenocarcinoma,lung squamous cell carcinoma,prostate cancer,gastric cancer,and gastroesophageal cancer,while it was significantly downregulated in renal chromophobe carcinoma and thyroid carcinoma.The highest mutation frequency of MIA3 was observed in endometrial cancer (11.4%),followed by gastric cancer (6.1%).In most cancers,especially ovarian serous cystadenoma,brain low-grade glioma,glioblastoma multiforme,renal papillary cell carcinoma,and mixed renal cancer,MIA3 expression was positively correlated with DNA methyltransferase expression.High expression of MIA3 was a risk factor for poor prognosis in adrenocortical carcinoma,renal chromophobe carcinoma,renal papillary cell carcinoma,mixed renal cancer,and brain low-grade glioma.Conversely,low expression of MIA3 was associated with poor prognosis in cutaneous melanoma and ovarian serous cystadenoma.The infiltration of cancer immune cells,including B cells,CD4+T lymphocytes,CD8+T lymphocytes,neutrophils,dendritic cells,and macrophages,was significantly correlated with MIA3 expression.Additionally,MIA3 expression was positively correlated with stromal and immune scores in colorectal cancer,mixed renal cancer,head and neck squamous cell carcinoma,renal clear cell carcinoma,testicular germ cell tumors,and renal chromophobe carcinoma.These findings suggest that MIA3 may serve as a valuable prognostic biomarker and potential therapeutic target for multiple cancers.However,further studies are needed to confirm these findings Reference | Related Articles | Metrics | Comments（0）

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Optimization of Deproteinization Process of  Polysaccharides from Polygonatum odoratum  Based on Response Surface Methodology ZHANG Yang, XIE Fei, CHEN Shuting, DU Laihong, HU Kemei, ZOU Bin, WANG Qi, CHENG Jiang Journal of Jishou University(Natural Sciences Edition)    2025, 46 (3): 75-81.   DOI: 10.13438/j.cnki.jdzk.2025.03.009 Abstract （435）      PDF（pc） （5551KB）（445）       Knowledge map    Save Using Polygonatum odoratum (Mill.) Druce powder as the raw material,this study investigated the effects of  chloroform to butyl alcohol volume ratio,Sevage reagent to polysaccharide sample volume ratio,and shaking time on polysaccharide retention rate and protein removal rate.Based on single factor experiments,the protein removal process for polysaccharides was optimized using response surface methodology.The optimal conditions were determined as follows:V(chloroform)∶V(butyl alcohol)=4∶1,V(Sevage reagent)∶V(Polysaccharide  sample)= 1∶2,and shaking time of 30 min.Under these conditions,the polysaccharide retention rate reached  76.01%,and the protein removal rate was 28.73%.This optimized protocol provides a reliable approach for efficiently removing proteins while preserving polysaccharide integrity during the purification of Polygonatum odoratum (Mill.) Druce polysaccharides. Reference | Related Articles | Metrics | Comments（0）

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Design and Implementation of a Small Multi-Frequency FOT Respiratory Impedance Measurement System LAN Hong, WANG Xingfan, LUO Xiang, LI Shu Journal of Jishou University(Natural Sciences Edition)    2025, 46 (2): 31-38.   DOI: 10.13438/j.cnki.jdzk.2025.02.004 Abstract （388）      PDF（pc） （1828KB）（191）       Knowledge map    Save Based on the forced oscillation principle,a small-scale forced oscillation pulmonary function measurement system with multi-frequency compound mode is designed.Sine signals of four different frequencies (5,10,15,20 Hz) are superimposed as forced oscillation excitation sources,and the superimposed excitation source signals are output to the loudspeaker through the power amplifier circuit by the STM32F407 processor,generating oscillating airflow to act on the human respiratory system.The flow and pressure signals collected by flow sensor and pressure sensor are processed by variational mode decomposition algorithm to extract pure forced oscillation signals effectively.The experimental verification of airflow resistance measurement and adult repeatability respiratory impedance measurement shows that the system is stable and reliable,and can accurately obtain human respiratory impedance parameters,which is suitable for early detection and evaluation of clinical respiratory diseases. Reference | Related Articles | Metrics | Comments（0）

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Ultrasound Visualized Stellate Ganglion Block Combined with Acupoint Catgut Implantation for the Treatment of Intractable Insomnia ZHANG Jiancheng, ZHOU Tenghao, ZHENG Hao Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 77-81.   DOI: 10.13438/j.cnki.jdzk.2025.05.011 Abstract （388）      PDF（pc） （587KB）（147）       Knowledge map    Save To explore the clinical effect of ultrasound-guided stellate ganglion block combined with acupoint catgut implantation therapy in the treatment of intractable insomnia,60 patients with intractable insomnia who visited Shenzhen Pingle Orthopedic Hospital from January 1,2022 to December 31,2023 were selected as the research objects and randomly divided into the control group and the treatment group,with 30 cases in each group.The control group was treated with acupuncture,while the treatment group was treated with ultrasound-guided stellate ganglion block combined with acupoint catgut implantation therapy.The treatment course for both groups was 10 days.The effective rate and pittsburgh sleep quality index (PSQI) scores of the patients before and after treatment were analyzed.The results showed that the number of cases with complete recovery and marked improvement in the treatment group was significantly higher than that in the control group;the number of cases with no improvement in the treatment group was significantly lower than that in the control group;the effective rate of the treatment group was significantly higher than that of the control group;compared with the control group after treatment and the treatment group before treatment,the scores of 7 factors (sleep quality,sleep latency,sleep duration,sleep efficiency,sleep disturbance,use of hypnotic drugs,and daytime dysfunction) and PSQI scores of the treatment group after treatment were significantly decreased.This indicates that ultrasound-guided stellate ganglion block combined with acupoint catgut implantation therapy is an effective method that can significantly prolong sleep duration and improve sleep quality. Reference | Related Articles | Metrics | Comments（0）

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Lattice Boltzmann Model for Pricing American Lookback Option ZHANG Yi, WU Fangfang, ZHANG Qi Journal of Jishou University(Natural Sciences Edition)    2025, 46 (2): 23-30.   DOI: 10.13438/j.cnki.jdzk.2025.02.003 Abstract （379）      PDF（pc） （1705KB）（145）       Knowledge map    Save The lattice Boltzmann model (LBM) is used to solve the pricing problem of the American lookback option.The domain truncation technique and the penalty method are used to transform the linear complementary model satisfied by the lookback option into a one-dimensional nonlinear parabolic problem on a bounded domain,and LBM is introduced for the transformed bounded domain problem.The macroscopic equation is recovered by selecting appropriate equilibrium distribution functions and amending functions.The numerical simulation results show that the option prices obtained by LBM agree well with the results derived from the binomial tree method and other methods,which verify the effectiveness of the model in solving the pricing problem of the American lookback option. Reference | Related Articles | Metrics | Comments（0）

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Development Status and Optimization Path of Rural Entrepreneurial Ecosystem：GEM Model Based on Survey Data of 805 Rural Enterprises ZHANG Huaiying, TONG Ziping, CHANG Le, GAO Xin Journal of Jishou University(Natural Sciences Edition)    2025, 46 (2): 90-96.   DOI: 10.13438/j.cnki.jdzk.2025.02.011 Abstract （377）      PDF（pc） （681KB）（197）       Knowledge map    Save This paper conducted a survey on 805 rural entrepreneurial enterprises in China and analyzed the status quo of rural entrepreneurial ecosystem by adopting the global entrepreneurship monitor (GEM) model.The results show that:the overall operation and development trend of rural entrepreneurial enterprises are good,but the overall scale is not large,the level of development is not high.The rural entrepreneurial environment is generally good,but the support measures in the aspects of R&D transfer,commercial and legal infrastructure need to be further optimized.It is suggested that measures must be taken,such as comprehensively optimizing the allocation of rural entrepreneurial resources,further promoting the integration of industry,university and research,optimizing intermediary service institutions,actively promoting learning atmosphere in rural areas and improving the driving ability of high-quality subjects,so as to promote the high-quality development of rural entrepreneurial ecosystem. Reference | Related Articles | Metrics | Comments（0）

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Characterization and Phylogenetic Analysis of the Chloroplast Genome of the Toxic Medicinal Plant Illicium simonsii GAO Tiantian, MAO Jiuyang, LI Haifeng, ZHANG Dequan, 3 Journal of Jishou University(Natural Sciences Edition)    2025, 46 (3): 62-74.   DOI: 10.13438/j.cnki.jdzk.2025.03.008 Abstract （353）      PDF（pc） （21367KB）（216）       Knowledge map    Save In order to explore the chloroplast genome characteristics of the toxic medicinal plant Illicium simonsii and analyze its relationships with other species of the Illicium,this study used next-generation sequencing (NGS) technology to perform high-throughput sequencing for leaf material of Illicium simonsii,and obtained the complete chloroplast genome after assembly and annotation,which was analyzed using bioinformatics.Meanwhile,phylogenetic tree of Illicium simonsii and the related species in the Illicium genus were constructed based on chloroplast genomes and coding sequences (CDS).The result showed that the full length of the Illicium simonsii chloroplast genome was 143 012 bp,which encoded 112 genes,including 78 protein-coding genes,29 tRNA genes,4 rRNA genes,and 1 pseudogene,with a total GC molar fraction of 39.1%;there were a total of 100 simple sequence repeats (SSRs) in the chloroplast genome of Illicium simonsii,with the largest number of mono-nucleotides.The degree of chloroplast genomic variation in Illicium plants all showed higher LSC and SSC regions than IRs regions,and the five highly variable regions were trnK-UUU-rps16，accD-psal，rpl20-clpP1，ycf1，atpF;Within the genus Illicium,Illicium simonsii was most closely related to Illicium burmanicum,with a support rate as high as 100%,and both Illicium simonsii and Illicium verum belong to the same monophyletic clade,exhibiting closer phylogenetic affinity. Reference | Related Articles | Metrics | Comments（0）

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Fatigue Performance of Steel-Concrete Composite Beams Under Vehicle Loads WANG Jiansheng, ZHANG Jianmeng, JIA Yumeng Journal of Jishou University(Natural Sciences Edition)    2025, 46 (2): 51-57.   DOI: 10.13438/j.cnki.jdzk.2025.02.007 Abstract （342）      PDF（pc） （2787KB）（88）       Knowledge map    Save In order to more accurately calculate the fatigue damage and fatigue life of steel-concrete composite beam under standard vehicle load,the steel beam components of a large-span steel-concrete composite beam suspension bridge were taken as the research object.Based on the S-N curve and linear fatigue damage theory,a standard segment model was established.Accordingly,the welding position of the secondary longitudinal beam was identified as the focus fatigue point,and the stress time course calculation was done for the point.The results showed that when the vehicle mass increases from 50 t to 100 t,the amount of fatigue damage will increase by more than 5 times in the same period of time,and the increase in the vehicle mass will reduce the fatigue life of the bridge structure.The fatigue damage of bridge structures increases with the increase of vehicle speed.The increase rate of fatigue damage is greater at low speeds,and the increase rate of fatigue damage slows down at high speeds. Reference | Related Articles | Metrics | Comments（0）

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Optimizing the High-Quality Development of Winter Sports in China:A Study Based on the Analysis of the Development Factors of German Winter Sports LEI Zhenzhou, HE Jing, LUO Shuaicheng Journal of Jishou University(Natural Sciences Edition)    2025, 46 (3): 89-96.   DOI: 10.13438/j.cnki.jdzk.2025.03.011 Abstract （320）      PDF（pc） （852KB）（441）       Knowledge map    Save The long-term top-level performance of German winter sports is due to the country's emphasis on winter sports,as evidenced by the following:a clearly defined and efficient organizational management;a wide range of funding support channels;well-developed winter sports facilities;active promotion of mass participation and youth sports;build a diversified talent training system;close integration of practical training and scientific research;and continuous improvement of coaches' teaching skills.Based on the development experience of German winter sports,this paper proposes an optimized path for the high-quality development of winter sports in China:deepen management system reform and expand funding support channels;improve the selection and training model and strengthen the integration of sports,education,and science;and enhance the management level of coaches and support scientific research to assist practical training. Reference | Related Articles | Metrics | Comments（0）

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A Delayed Epidemic Model Affected by Disease Awareness and Vaccination ZHAO Jialu, XIE Jingli, WANG Yuqing, LI Jialong Journal of Jishou University(Natural Sciences Edition)    2025, 46 (2): 10-22.   DOI: 10.13438/j.cnki.jdzk.2025.02.002 Abstract （315）      PDF（pc） （2983KB）（125）       Knowledge map    Save In this paper,a delayed epidemic model affected by disease awareness and vaccination is established.The basic regeneration number of the model is given,and the stability of the disease-free equilibrium point and the endemic equilibrium point of the model is analyzed.Then,the discriminant condition that generates Hopf bifurcation is provided,and the effects of disease awareness conversion rate and vaccination rate on infected population are studied.The results show that when the delay is the branch parameter,the equilibrium point may have periodic solutions through the Hopf bifurcation. Reference | Related Articles | Metrics | Comments（0）

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Lightweight YOLOv5s with U2-Net for Intelligent Reading of Pointer Meters SU Yingying, SI Hongyun, TANG Xia, LIU Xinghua, GUO Lixia Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 44-51.   DOI: 10.13438/j.cnki.jdzk.2025.04.007 Abstract （314）      PDF（pc） （9893KB）（135）       Knowledge map    Save Aiming at the problem of slow speed of intelligent positioning and low accuracy of reading for pointer meters,a method of intelligent reading for pointer meters based on YOLOv5s and U2-Net is proposed.Firstly,the partial batch normalization layer in the trunk and neck of YOLOv5s is used for channel pruning to realize the model lightweight and improve the speed of meter positioning;secondly,in view of shadow and noisy images collected in the field,the image is enhanced,so as to make the model suitable for complex environments;and then,the U2-Net model is adopted to segment the pointer and the scale,to locate the relative position of pointer on the scale,and to improve the accuracy of readings.Then,the U2-Net model is used to segment the pointer and the scale,locate the relative position of the pointer on the scale,and improve the accuracy of the readings;finally,the distance method is used for meter reading.The results of the experiment and reading test show that the size of the lightweight YOLOv5s model is reduced by 56.35%,the positioning time is reduced by 18.18%,the accuracy of the reading recognition test is 93.42%,the average absolute error is 0.032,the average reading error rate is 0.605%,and the average test time per picture is 0.402 s,which meets the industrial inspection requirements. Reference | Related Articles | Metrics | Comments（0）

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Influence of THM Coupling on Energy Storage Efficiency of CAESA System ZHOU Qian, LI Yi1, 2, ZHANG Guijin, HUANG Leqing Journal of Jishou University(Natural Sciences Edition)    2025, 46 (3): 37-45.   DOI: 10.13438/j.cnki.jdzk.2025.03.006 Abstract （312）      PDF（pc） （990KB）（118）       Knowledge map    Save In order to explore the influence of rock mechanical response of reservoir on energy storage efficiency of compressed air energy storage in aquifer (CAESA) system,the program T2WELL/EOS3-FLAC3D numerical simulation is used to analyze the energy storage efficiency of the thermal-hydrologic coupled and thermal-hydrologic coupled CAESA system under different injection temperature,permeability,injection-production rate.The results show that the rock mechanical response generated by the system operation will accelerate the energy exchange in the system,and the energy storage efficiency of the system will decrease faster when the rock mechanical process is considered.The higher the injection temperature,the weaker the influence of rock mechanical response on energy storage efficiency.The mechanical response of the reservoir to the system energy storage efficiency exhibits a permeability threshold effect under the rated energy storage scale.The greater the injection and production rate,the stronger the influence of rock mechanical response on the energy storage efficiency of the system. Reference | Related Articles | Metrics | Comments（0）

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Skin Effect of One-Dimensional Non-Hermitian Circuit Systems ZHOU Dongmei, KONG Peng, WANG Xiaoyun, DENG Ke Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 68-72.   DOI: 10.13438/j.cnki.jdzk.2025.04.010 Abstract （310）      PDF（pc） （754KB）（98）       Knowledge map    Save A one-dimensional non-Hermitian Hatono-Nelson single-chain circuit model was designed.By varying the inter-chain coupling strength,the non-Hermitian skin effect in three different parameter conditions was explored.On this basis,circuit simulation experiments were carried out.The results show that when the interchain coupling is reciprocal (Hermitian limit),the system's PBC energy spectrum coincides with the OBC energy spectrum,the generalized Brillouin zone (GBZ) is identical with the Brillouin zone (BZ),and the eigenstates extend throughout the bulk,forming extended states.When the interchain coupling is non-reciprocal with a rightward coupling strength greater than the leftward coupling strength,the PBC and OBC energy spectra differ significantly,the GBZ lies inside the BZ,and the eigenstates localize to the left,forming left skin modes.Conversely,when the rightward coupling strength is smaller than the leftward coupling strength,the PBC and OBC energy spectra also differ substantially,the GBZ encloses the BZ,and the eigenstates localize to the right,forming right skin modes.The skin effect in all three cases can be successfully observed in the circuit simulations,and the experimental results agree well with theoretical calculations. Reference | Related Articles | Metrics | Comments（0）

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Some Results on Maximal Subgroups and Admissible Subgroups ZHAO Jia, HUANG Xiao Journal of Jishou University(Natural Sciences Edition)    2025, 46 (3): 5-8.   DOI: 10.13438/j.cnki.jdzk.2025.03.002 Abstract （290）      PDF（pc） （464KB）（110）       Knowledge map    Save Starting from solvable groups and combining the definitions of maximal subgroups and admissible subgroups,this paper investigats the quantitative relationship between maximal subgroups and admissible subgroups in groups of order p,groups of order pq,finite cyclic groups,simple groups A5 and the 5th-order symmetric group  S5. Reference | Related Articles | Metrics | Comments（0）

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Analytical Solution of Transient Matrix Suction for Homogeneous Foundation Under Medium-Peak Rainfall Infiltration XIONG Xuanyu, QIN Weixing, XU Ruilin, HU Huiren, CHEN Jian, WU Yihan Journal of Jishou University(Natural Sciences Edition)    2025, 46 (2): 39-44.   DOI: 10.13438/j.cnki.jdzk.2025.02.005 Abstract （283）      PDF（pc） （1257KB）（103）       Knowledge map    Save In order to reveal the influence of medium-peak rainfall infiltration on the spatial-temporal distribution of matrix suction,the Gardner soil-water characteristic function is introduced to simplify the Richards transient unsaturated seepage equation and to establish a water transport model for a homogeneous foundation under medium-peak rainfall infiltration.Fourier integral transform is used to obtain a analytical solution of the transient matric suction during rainwater infiltration under medium-peak rainfall.The analytical solution establishes the mapping relationship between the matric suction of unsaturated foundation and the rainfall characteristic parameters,which provides a theoretical method for quickly and accurately obtaining the matrix suction and its evolution law at any position of the foundation during the infiltration process of central-peaked pattern. Reference | Related Articles | Metrics | Comments（0）

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Optimization of Extraction Process and Functional Properties of Protein from Lilium lancifolium Ker Gawl. HUANG Shuwei, LYU Huiting, ZHAO Jing, XIANG Yu, A Runa, CHENG Jiang, YAO Shufeng Journal of Jishou University(Natural Sciences Edition)    2025, 46 (3): 82-88.   DOI: 10.13438/j.cnki.jdzk.2025.03.010 Abstract （273）      PDF（pc） （683KB）（198）       Knowledge map    Save The effects of solid-liquid ratio,extraction time and extraction temperature on the yield of total protein were investigated by using ultrasonic-assisted alkali extraction and acid precipitation extraction method with Lilium lancifolium bulb powder as raw material.The extraction process of total protein was optimized by L9(33) orthogonal experiment;and on this basis,the water-holding capacity and oil-holding capacity of total protein extract were determined.The results of extraction process optimization showed that the optimal extraction conditions of total protein in Lilium lancifolium bulbs were as follows:solid-liquid ratio 1∶80 (g∶mL),extraction time 40 min,extraction temperature 45 ℃.Under the optimal extraction conditions,the total protein yield was 1.30%.The results of water-holding capacity and oil-holding capacity showed that the water-holding capacity of the total protein extract was 3.69 g/g,and the oil-holding capacity was 7.39 g/g.It can be concluded that the protein has good water-holding capacity and oil-holding capacity,so that it can be used as a natural adhesive of plant-based food and natural green moisturizing component,which can expand the high-value application of medicinal and edible homologous Chinese herbal medicines. Reference | Related Articles | Metrics | Comments（0）

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Lattice Boltzmann Method for the NLS-Boussinesq Equation DONG Yaru, DAI Houping, WANG Jing Journal of Jishou University(Natural Sciences Edition)    2025, 46 (2): 1-9.   DOI: 10.13438/j.cnki.jdzk.2025.02.001 Abstract （271）      PDF（pc） （1537KB）（121）       Knowledge map    Save A lattice Boltzmann model with dual distribution functions is developed,and the evolution equations in the model are Taylor expanded.The Chapman-Enskog multiscale expansion technique is combined to derive the equilibrium distribution functions and correction functions and then to recover the  nonlinear coupled NLS-Boussinesq equations Reference | Related Articles | Metrics | Comments（0）

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Analytical Solution of Matrix Suction for Landfill Cover Layer with Hydro-Mechanical Effect CHEN Jian, QIN Weixing, CAO Xinhon, XU Ruilin, XIONG Xuanyu Journal of Jishou University(Natural Sciences Edition)    2025, 46 (2): 45-50.   DOI: 10.13438/j.cnki.jdzk.2025.02.006 Abstract （270）      PDF（pc） （758KB）（117）       Knowledge map    Save Rainwater infiltration changes the size and distribution of matrix suction in landfill cover layer.To investigate the evolution characteristics of matric suction in the cover layer with hydraulic coupling effects,a water transport model for a landfill cover layer under rainfall infiltration is established based on the Fredlund's unsaturated soil constitutive model.The Gardner soil-water characteristic function and Fourier integral transform are used to obtain a analytical solution of the transient matric suction during rainwater infiltration with hydro-mechanical effect.Based on this analytical solution,a comparative analysis was conducted on the differences in the evolution characteristics of matric suction in the cover layer with and without hydro-mechanical effects.It was found that the reduction rate and change amplitude of matric suction in the cover layer with  hydro-mechanical effects were significantly lower than those without  hydro-mechanical effects. Reference | Related Articles | Metrics | Comments（0）

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A Type of Infectious Disease Model with Media Impact Factor and Vaccination Rate WANG Liping, XIE Jingli Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 28-37.   DOI: 10.13438/j.cnki.jdzk.2025.04.005 Abstract （266）      PDF（pc） （748KB）（73）       Knowledge map    Save A type of infectious disease model with media impact  factor and vaccination rate has been established.The basic reproduction number of the model was given through the next-generation matrix method.Then,by constructing a Lyapunov function and utilizing the LaSalle invariance principle,the existence and stability of the disease-free equilibrium point and endemic equilibrium point of the model are analyzed. Reference | Related Articles | Metrics | Comments（0）

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Preparation of a Fe3O4@SiO2@Fe-MIL-101 for the Adsorption Removal of Fluoride in Zinc Sulfate Electrolyte LIAO Jia, WANG Chunmei, LI Fei, YANG Chengcheng, GUO Xianyu, TAN Wentao, LI Hui Journal of Jishou University(Natural Sciences Edition)    2025, 46 (3): 46-61.   DOI: 10.13438/j.cnki.jdzk.2025.03.007 Abstract （262）      PDF（pc） （1785KB）（104）       Knowledge map    Save To remove the fluoride in zinc sulfate electrolyte to an appropriate level,mitigate environmental fluoride pollution,and drive the development of the hydrometallurgy industry of zinc,a novel Fe3O4@SiO2@Fe-MIL-101 magnetic composite material was successfully synthesized via the one-pot method.Preparation conditions were optimized and structural characterization of this material conducted using FTIR,SEM,EDS,XRD and Hysteresis analysis.The results show that this composite exhibits a more rapid fluoride adsorption dynamics and a higher fluoride adsorption capacity (18.34 mg/g) and its adsorption behavior fitted for the first order dynamic model and the Freundlich isotherm model.The adsorption of fluorine by this composite is mainly physical adsorption according to the mean adsorption energy (1.216 kJ/mol).The interfering ions co-existed in fluoride-containing solutions,like HCO-3,NO- and Cl-,have a significant effect on fluorine adsorption.This composite has also been proved with magnetism,higher adsorption selectivity and satisfactory reusability.When this composite is employed as an adsorbent for adsorption removing fluoride in zinc sulfate electrolyte,it exhibits higher pH-dependent behavior as well as high fluoride removal efficiency at pH 6.5. Reference | Related Articles | Metrics | Comments（0）

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Study on the Effect and Mechanism of Semen Raphani Oil in the Treatment of Chilblains LEI Yan, JIN Shuo, DI Kaiyin, LIU Yuhui, YANG Ting, XIAO Ya, XU Da, WU Guanghui Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 59-68.   DOI: 10.13438/j.cnki.jdzk.2025.05.009 Abstract （262）      PDF（pc） （13988KB）（54）       Knowledge map    Save To investigate the anti-chilblain effect and mechanism of Semen Raphani oil,a mouse chilblains model was established to observe the effects of Semen Raphani oil on paw swelling rate,pain threshold,and pathological changes in chilblained tissues.Network pharmacology was used to explore the anti-chilblain components,targets,and signaling pathways of Semen Raphani oil.Animal experiments showed that Semen Raphani oil significantly alleviated paw swelling,increased the pain threshold in chilblained mice,relieved skin edema,and reduced the number of mast cells in chilblained tissues.Network pharmacology predictions indicate that Semen Raphani oil may interact with 38 potential targets in the treatment of chilblains.The core targets include MAOB,HSP90AB1,PTGS2,PTGS1,ACTB,MYC,PGR,NCOA2,RELA,and RXRA.The primary signaling pathways involved are neuroactive ligand signaling,chemical carcinogenesis-receptor activation,human cytomegalovirus infection,and the phosphatidylinositol-3-kinase-protein kinase B (PI3K-Akt) pathway.Key biological functions associated with these targets include smooth muscle contraction,xenobiotic stimulus response,and thermogenesis. Reference | Related Articles | Metrics | Comments（0）

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Multi-Attribute Group Decision Making Algorithm of  Weighted Probabilistic Hesitant Fuzzy Sets ZHU Guocheng, CHEN Liqun Journal of Jishou University(Natural Sciences Edition)    2025, 46 (3): 9-20.   DOI: 10.13438/j.cnki.jdzk.2025.03.003 Abstract （257）      PDF（pc） （674KB）（103）       Knowledge map    Save In order to make the comprehensive evaluation factor value of each scheme contain more evaluation information,a three-factor decision algorithm is designed.For each evaluation attribute,the comprehensive weights of other evaluation experts are calculated in turn according to the scores of authoritative evaluation experts.According to the evaluation information given by the evaluation experts with different comprehensive weights,the true function value,the virtual function value and the distance calculation formulas of two weighted probabilistic hesitant fuzzy elements are given respectively.Based on the calculation results of truth-value function and virtual-value function,entropy method is used to obtain the objective weights of evaluation attributes.On the evaluation attributes with different comprehensive weights,the comprehensive evaluation factor values of each scheme are obtained by using the truth function values,virtual function values and distance calculation results,and the schemes are ranked according to the comprehensive evaluation factor values.The feasibility of the decision algorithm is verified by a numerical example. Reference | Related Articles | Metrics | Comments（0）

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Normal-Like Curves According to the ED-Frame in E41 HU Na, LIU Haoran Journal of Jishou University(Natural Sciences Edition)    2025, 46 (3): 21-29.   DOI: 10.13438/j.cnki.jdzk.2025.03.004 Abstract （257）      PDF（pc） （536KB）（110）       Knowledge map    Save Based on the extended Darboux (ED)-framework,the normal-like curves under a specific ED-frame in E4 is defined.The concept of normal curves is extended to E41,and the characteristics of normal-like curves are analyzed in depth.Three equations relating the curvature of normal curves on hypersurfaces M are derived.These equations serve as the necessary and sufficient conditions for normal-like curves in E41.By applying the ED-frame,we define the E-expressions in E41 and give concrete application examples. Reference | Related Articles | Metrics | Comments（0）

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Blind Spectrum Sensing Method Based on Covariance Matrix Diagonal-to-Nondiagonal Ratio ZHANG Song, WANG Xuming, PAN Xiaoping, LEI Kejun, YANG Xi Journal of Jishou University(Natural Sciences Edition)    2025, 46 (3): 30-36.   DOI: 10.13438/j.cnki.jdzk.2025.03.005 Abstract （248）      PDF（pc） （780KB）（91）       Knowledge map    Save Aiming at the limitations of existing covariance matrix-based blind spectrum sensing algorithms in insufficient utilization of multi-antenna signal correlation and degraded detection performance under low signal-to-noise ratio (SNR) conditions,this paper proposes a fully blind spectrum sensing algorithm based on covariance diagonal-to-nondiagonal ratio detection (CDNRD).The algorithm constructs a detection statistic as the ratio of the sum of the non-diagonal elements of the sample covariance matrix to the total energy of the received signals.By jointly utilizing the amplitude and phase information of the signals,it fully exploits the spatial correlation characteristics of multi-antenna signals.Simulation results demonstrate that in scenarios with low SNR (-15 dB) and strong correlation (correlation coefficient ρ=0.9),the detection probability of the CDNRD algorithm significantly outperforms existing methods,including covariance absolute value detection (CAVD),maximum-minimum eigenvalue detection (MMED),gini index detection (GID),and energy detection (ED).Moreover,the algorithm exhibits robustness and stability across varying sample sizes,antenna numbers,and correlation coefficients. Reference | Related Articles | Metrics | Comments（0）

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Local Well-Posedness of Solutions to the MHD and Hall-MHD Systems WANG Miaomiao, MA Deyi, BIE Qunyi Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 5-10.   DOI: 10.13438/j.cnki.jdzk.2025.04.002 Abstract （246）      PDF（pc） （522KB）（81）       Knowledge map    Save This paper studies the local well-posedness for the 3D generalized incompressible magneto-hydrodynamic (MHD) and Hall-magnetohydrodynamic (Hall-MHD) systems.Firstly,we present the estimations of the heat kernel in Morrey spaces.Then,by using Picard's fixed point argument,we prove that when parameters α1,α2 satisfy certain conditions and the initial data satisfies (u0,b0)∈Mr,p(R3)，where 1<r<p<+∞ and p>3，the solutions to these two systems are locally well-posed in homogeneous Morrey spaces. Reference | Related Articles | Metrics | Comments（0）

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Vacancy and Doping Modulation Photogalvanic Effect in α-Se Photodetector WU Xiuwen, LIAO Wenhu Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 73-80.   DOI: 10.13438/j.cnki.jdzk.2025.04.011 Abstract （244）      PDF（pc） （3136KB）（89）       Knowledge map    Save First-principles calculations of nonequilibrium Green's function combined with density functional theory are utilized to investigate the photogalvanic effects of α-Se photodetectors in the presence of single-atom vacancies,two-atom vacancies,and doping with Te,W,As,and Cd atoms.The results demonstrate that the single-atom vacancy can break the spatial symmetry of the device more greatly and generate stronger photocurrent.The maximum photoresponse of 32.61 a20/photon is obtained by doping with As atoms,and the extinction ratio of the device reaches 184.9 when Se atom are replaced by Cd atom,and the device possesses a more sensitive visible-light absorption along the y-direction,and the maximum photoresponse in y-direction is 1 369 times higher than that along the x-direction,showing an excellent anisotropic photoresponse. Reference | Related Articles | Metrics | Comments（0）

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Current Situation of and Countermeasures for Cultivating Teenage Sports Reserve Talents in Shangrao City YANG Wenshu Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 88-95.   DOI: 10.13438/j.cnki.jdzk.2025.04.013 Abstract （243）      PDF（pc） （611KB）（89）       Knowledge map    Save In order to improve the quality of teenage sports reserve talent cultivation in Shangrao City,an investigation was conducted on the current situation of teenage sports reserve talent cultivation in Shangrao City.The survey showed that there were problems in the cultivation of teenage sports reserve talents in Shangrao City,such as incomplete selection mechanism and training system,insufficient financial investment,prominent contradiction between learning and training,and incomplete linkage mechanism for cross subject collaborative training.The cultivation system can be improved from four aspects:to optimize the selection mechanism and training efficiency;to expand the effective supply of resources needed for talent cultivation;to safeguard the legitimate rights and interests of the teenage talents in education;and to promote diversified and collaborative cultivation. Reference | Related Articles | Metrics | Comments（0）

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Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 96-96.   Abstract （237）      PDF（pc） （144KB）（89）       Knowledge map    Save Related Articles | Metrics | Comments（0）

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Sound Insulation Law of Large-Sized Thin-Film Honeycomb Acoustic Metamaterial JIANG Junqi, LIN Yuanyan, DENG Ke, JIA Han, ZHAO Chenhui Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 81-88.   DOI: 10.13438/j.cnki.jdzk.2025.04.012 Abstract （236）      PDF（pc） （2142KB）（85）       Knowledge map    Save Based on a design integrating single-layer PET film and single-layer aluminum honeycomb,this study developed a large-sized thin-film honeycomb acoustic metamaterial.Experimental investigations were conducted to comprehensively analyze the effects of honeycomb core parameters—side length,wall thickness,and height—on the sound insulation performance,along with proposing a novel evaluation metric,that is,the ratio of average sound insulation to surface density.The results demonstrate that the sound insulation performance of the metamaterial exceeds the prediction of the mass law within the 400~1 600 Hz frequency range.Superior acoustic performance is achieved when the honeycomb core possesses a side length of 2 mm,a wall thickness of 0.06 mm,and a height of 10 mm.Higher acoustic efficiency is observed when the honeycomb core has a side length of 7 mm,a wall thickness of 0.05 mm,and a height of 7 mm. Reference | Related Articles | Metrics | Comments（0）

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Existence of Solutions for a Class of Third-Order Ordinary Differential Equations Boundary Value Problems on an Infinite Interval SONG Guoxin, GOU Haide, LIU Jingfang Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 19-27.   DOI: 10.13438/j.cnki.jdzk.2025.04.004 Abstract （231）      PDF（pc） （533KB）（108）       Knowledge map    Save This paper investigates the existence of solutions for a class of third-order ordinary differential equation boundary value problems on an infinite interval.Firstly,the boundary value problems is equivalently transformed into the existence problems of fixed points for a class of integral operators in a suitable Banach space.Then,the complete continuity of the integral operators is proved by using the generalized Arzelá-Ascoli theorem.Finally,the Leray-Schauder principle are employed to establish an existence theorem of the solutions for this kind of boundary value problems. Reference | Related Articles | Metrics | Comments（0）

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A Stochastic Financial Investment Model with Saturation Incidence LIU Juan, LI Yun Journal of Jishou University(Natural Sciences Edition)    2025, 46 (3): 1-4.   DOI: 10.13438/j.cnki.jdzk.2025.03.001 Abstract （231）      PDF（pc） （515KB）（161）       Knowledge map    Save On the basis of deterministic financial investment model,a stochastic financial investment model with saturation rate was established by using the dynamic system compartment theory.The existence and uniqueness of positive solutions of the model were discussed by using the theory of stochastic differential equations,and the sufficiency condition for the disappearance of investment fund was obtained by using the It formula and the law of strong numbers.The research results indicate that uncertain factors in the investment environment have a significant impact on the financial market. Reference | Related Articles | Metrics | Comments（0）

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Watermarking Algorithm Against Rotation Attack Based on Multi-Transform Domain YU Shuaizhen, YIN Hongcai, XIE Daoping Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 29-36.   DOI: 10.13438/j.cnki.jdzk.2025.05.005 Abstract （226）      PDF（pc） （2792KB）（109）       Knowledge map    Save To enhance the ability of transform domain digital watermarking to resist rotation attacks,the article proposes a watermarking algorithm that fuses multiple domains to resist arbitrary rotation angle attacks.First,the host image is subjected to DWT transformation,then the low-frequency coefficients of the last level are subjected to SVD,and finally,based on the size of the watermark information an appropriate position in the singular value matrix is selected to embed the scrambled and encrypted watermark signal.The experimental results show that the algorithm has good watermark information hiding ability and can completely resist single rotation attacks ranging from 1°~360°.At the same time,it has strong robustness against combination attacks of image rotation attacks combined with cropping,JPEG compression and other attacks,and can effectively resist conventional signal processing. Reference | Related Articles | Metrics | Comments（0）

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Finite-Time Synchronization of Discontinuous Inertial Neural Networks Based on Event-Triggered Mechanism  ZENG Zhiyuan, DAI Houping, CHEN Teng Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 19-28.   DOI: 10.13438/j.cnki.jdzk.2025.05.004 Abstract （224）      PDF（pc） （737KB）（54）       Knowledge map    Save The finite-time event-triggered control problem of a class of time-delay inertial neural networks with discontinuous activation functions is studied.The second-order inertial neural network is transformed into the form of a first-order neural network through the variable substitution method.Based on the characteristics of discontinuous activation functions,the solution of the neural network is defined using the Filippov solution framework.A new event-triggered controller is designed in combination with the finite-time stability theory,and the trigger interval is restricted to avoid the Zeno phenomenon.On this basis,the discrimination criteria for the network to achieve finite-time synchronization are derived to ensure that this type of second-order inertial neural network achieves synchronization within a finite time. Reference | Related Articles | Metrics | Comments（0）

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Space-Filling Property of Complementary Design Based on Doubling WU Yue, XIE Jiayan, LI Hongyi Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 38-43.   DOI: 10.13438/j.cnki.jdzk.2025.04.006 Abstract （222）      PDF（pc） （511KB）（79）       Knowledge map    Save Taking two-level equidistant designs as the research objects,based on the wrap-around L2-discrepancy,the generalized wordlength pattern,and the Hamming distance,we discuss the analytical relationship between the double design and the complementary design of the sub-designs in two-level equidistant designs. Reference | Related Articles | Metrics | Comments（0）

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Permanence of a Two-Species Discrete Competition Model with Michaelis-Menten Type Capture in the First Species LIU Yijian, CHEN Fengde, LI Qianqian Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 11-18.   DOI: 10.13438/j.cnki.jdzk.2025.04.003 Abstract （217）      PDF（pc） （643KB）（76）       Knowledge map    Save In this paper,a two-species discrete competition model with Michaelis-Menten type harvesting in the first species was proposed and studied.A set of sufficient conditions to ensure the permanence of the model are obtained. Reference | Related Articles | Metrics | Comments（0）

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Construction of Graceful Labeling of Two Types of Graphs TANG Baoxiang, REN Han Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 1-4.   DOI: 10.13438/j.cnki.jdzk.2025.04.001 Abstract （213）      PDF（pc） （798KB）（78）       Knowledge map    Save Through the constructive approach,we have successfully assigned graceful labels to two classes of graphs:K2,n,n and K3∨K3,n-e,thus confirming their inclusion in the category of graceful graphs. Reference | Related Articles | Metrics | Comments（0）

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Quantum Effects on the Absorption Spectrum of Double Concentric Na Nanoshells ZHANG Mingfu, SHAN Xinyu, HUANG Yonggang Journal of Jishou University(Natural Sciences Edition)    2025, 46 (4): 52-60.   DOI: 10.13438/j.cnki.jdzk.2025.04.008 Abstract （207）      PDF（pc） （3686KB）（69）       Knowledge map    Save To investigate the quantum effects on the absorption spectra of double concentric sodium nanoshells and compare them with the local response approximation model (LRAM) and hard-wall hydrodynamic model (HDM),the quantum hydrodynamic model (QHDM) was employed based on coupled-mode theory to analyze the coupling characteristics of resonance modes on the inner and outer surfaces of a single shell,as well as the surface plasmon resonance properties of double concentric sodium nanoshells.The results indicate that,for a single-shell structure,LRAM predicts that as the inner cavity radius increases,the low-energy mode redshifts while the high-energy mode blueshifts;when the shell thickness increases,the low-energy mode blueshifts while the high-energy mode redshifts.In the case of the double concentric sodium nanosphere shell structure,when the spacing between shells is large,the two high-energy modes predicted by the HDM model exhibit a significant blueshift compared to LRAM predictions,whereas the same modes predicted by the QHDM model show a substantial redshift.Furthermore,when the outer shell thickness is large,the two low-energy modes predicted by both HDM and QHDM exhibit a slight blueshift relative to LRAM predictions,while the two high-energy modes predicted by HDM show a significant blueshift and those predicted by QHDM demonstrate a significant redshift. Reference | Related Articles | Metrics | Comments（0）

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Development of Xiangxi Vine Tea Extract Lozenges NI Dexin, LIU Jiawang, YIN Guang, HUANG Hongjun, ZOU Jingyi, FENG Qiuju Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 82-89.   DOI: 10.13438/j.cnki.jdzk.2025.05.012 Abstract （203）      PDF（pc） （1647KB）（76）       Knowledge map    Save Taking the vine tea from Xiangxi as the experimental raw material,we have optimized the extraction process of vine tea by single-factor experiments.The antibacterial activity and antioxidant activity of the vine tea extract were analyzed.The ratio of excipients in the prescription was further optimized to develop a vine tea extract lozenge.The quality of the product was tested to determine whether it met the relevant tablet quality standards.The results showed that the optimal extraction conditions were a solid-liquid ratio of 1∶40 (g∶mL),an ethanol volume fraction of 70%,a reflux time of 90 min,and a crystallization temperature of 10 ℃.The vine tea extract had a good inhibitory effect on Escherichia coli,with the maximum inhibition zone diameter being 15.1 mm.The vine tea extract had good scavenging abilities for hydroxyl radicals,superoxide anion radicals,and DPPH radicals,and also had a good reducing ability.Its radical scavenging level was much higher than that of citric acid and close to that of ascorbic acid.The preparation of lozenges employed a mixture of excipients consisting of 0.50 g dextrin,2.2 g starch,0.50 g sucrose,and 0.002 4 g magnesium stearate.The disintegration time of the finished product was 15 min,and the hardness,friability,appearance,and weight variation of the tablets all met the tablet quality standards of the Chinese Pharmacopoeia. Reference | Related Articles | Metrics | Comments（0）