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Journal of Jishou University(Natural Sciences Edition) 2025 Vol.46 Please wait a minute... For Selected: Download Citations EndNote Ris BibTeX Toggle Thumbnails Select Iterative Algorithm for the Optimal Approximation Solution of Matrix Equations AXB+CXTD=E with Generalized Constraint  YANG Jiawen, WAN Peng, LIANG Jinrong Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 1-11.   DOI: 10.13438/j.cnki.jdzk.2025.01.001 Abstract （371）      PDF（pc） （652KB）（178）       Knowledge map    Save An iterative algorithm is presented to calculate the optimal approximation solution of the matrix equations AXB+CXTD=E with constraint conditions GX=H.It is proved that given a special initial matrix  satisfying the generalized constraints,the minimal norm least squares solution of the matrix equation under the generalized constraints can be obtained by the finite-order iterative algorithm,and the optimal approximation solution can be calculated by using the minimal norm least squares solution. Reference | Related Articles | Metrics | Comments（0） Select An SIS Epidemic Model with Delay Effect WANG Yuqin, XIE Jingli, ZHAO Jialu, LI Jialong Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 12-17.   DOI: 10.13438/j.cnki.jdzk.2025.01.002 Abstract （890）      PDF（pc） （1135KB）（210）       Knowledge map    Save The dynamical properties of a class of SIS infectious disease models with time delay effects and logistic growth are investigated.The non-negativity and boundedness of the model solutions are proved by using the basic theory of functional differential equations and the constant variational method,and the conditions for the local stability of the equilibrium points are obtained by combining with the characteristic equations.Taking the time delay τ as the branching parameter,the conditions for Hopf branching of the endemic equilibrium points when they are unstable are obtained by Hopf branching theory. Reference | Related Articles | Metrics | Comments（0） Select Solving the One-and-Two Dimensional STO Equations Based on the PINN Method WANG Jing, DAI Houping, DONG Yaru Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 18-24.   DOI: 10.13438/j.cnki.jdzk.2025.01.003 Abstract （520）      PDF（pc） （2914KB）（251）       Knowledge map    Save Physically informed neural networks (PINN) model are used to solve the one-and two-dimensional Sharam-Tasso-Olver equations. The macroscopic equations and their initial margin conditions are used as physical information and transformed into the form of residuals,which are then used to construct a loss function to incorporate into the training process of the PINN model,and the Adam optimisation algorithm is used to achieve a high-precision solution.The numerical example results show that the loss function has high accuracy under a certain number of iterations,which verifies the reliability of the PINN model. Reference | Related Articles | Metrics | Comments（0） Select Surface Reconstruction of Discrete L2 Model Based on Conjugate Gradient Method FU Feifan, YANG Fenlin, LIU Guangying, AN Geng Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 25-31.   DOI: 10.13438/j.cnki.jdzk.2025.01.004 Abstract （289）      PDF（pc） （4225KB）（212）       Knowledge map    Save Euler Lagrange equations with Neumann boundary are generated when the functional of optimization problem is solved by calculus.To solve this problem,the L2 model is discretized by using maximum likelihood estimation,and a discrete L2 model that can handle free boundaries is obtained.The optimal linear conditions are solved by conjugate gradient method,and the surface to be reconstructed is obtained.The numerical results show that compared with the fast Fourier transform method and Horn-Brook's method,the image boundary obtained by the conjugate gradient method is smoother and more robust. Reference | Related Articles | Metrics | Comments（0） Select Surface Reconstruction Based on Spatial Adaptive Parameters LIU Guangying, YANG Fenlin, FU Feifan, AN Geng Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 32-38.   DOI: 10.13438/j.cnki.jdzk.2025.01.005 Abstract （388）      PDF（pc） （2785KB）（199）       Knowledge map    Save The least-squares model is capable of reconstructing smooth surfaces,but the depth discontinuity features can be blurred.In order to solve this problem,a spatially adaptive parameter is constructed by introducing the productivity term and Geary-Hinkley transform into the least squares model,an anisotropic weighted least-squares model is established;then the model is discretized by the 4-direction discretization formula,and the optimality condition is given;finally,the Krylov subspace method is used to solve the model.The numerical experimental results show that the anisotropic weighted least-squares model can keep the depth discontinuity of the surface,and the reconstruction effect is better than that of the least squares model. Reference | Related Articles | Metrics | Comments（0） Select Higher-Order Topological Corner States in 2D Valley Phononic Crystals Topological Insulators JIANG Jing, KONG Peng, DENG Ke Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 39-44.   DOI: 10.13438/j.cnki.jdzk.2025.01.006 Abstract （537）      PDF（pc） （7499KB）（4157）       Knowledge map    Save Based on the quantum valley-hall effect,a two-dimensional valley phononic crystal topological insulator with C3v symmetry has been designed.By rotating the angle of the scatterers inside the lattice,the topological properties of the lattice were changed.A supercell structure was constructed using two-dimensional valley phononic crystals with different topological phases,and the high-order topological corner states were investigated.The results show that when the rotation angle is changed,the symmetry of the system will decrease from C3v symmetry to C3 symmetry.When -30°<θ< 0°,the system corresponds to a non-trivial phase,while when 0°<θ<30°,the system corresponds to a trivial phase.When the internal lattice has a non-trivial phase and the external lattice has a trivial phase,there are three continuous corner states at the corners of the Zigzag boundary of the supercell structure.However,when the internal lattice has a trivial phase and the external lattice has a non-trivial phase,there are no corner states in the supercell structure.Before and after introducing disorder defects,the intrinsic field distribution of the corner states shows no significant change,demonstrating good robustness. Reference | Related Articles | Metrics | Comments（0） Select Low Frequency Wideband Sound Absorber Based on Extended-Neck Helmholtz Resonance XIAO Yafeng, YU Yuchi, WANG Jiahao, XU Feng, SHEN Danheng, LIU Yaoguang, LIN Yuanyan, KONG Peng, DENG Ke Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 45-50.   DOI: 10.13438/j.cnki.jdzk.2025.01.007 Abstract （623）      PDF（pc） （1585KB）（296）       Knowledge map    Save In order to solve the problem of low frequency sound absorption of Helmholtz resonator,an efficient wideband sound absorber with deep subwavelength thickness was designed by combining arrayed extended neck with Helmholtz resonance structure.The results show that the thickness of the absorber is only 1/36 of the wavelength corresponding to the absorption peak frequency,showing the sound absorption characteristics of deep subwavelength.When the resonant frequency is 315 Hz,the absorption peak amplitude of the sound absorber is as high as 0.985,which almost realizes the perfect absorption of sound energy.The sound absorption mechanism of the sound absorber is mainly due to the friction loss of sound energy in the inner wall of multiple extended necks.The arrayed extended neck provides additional tunability for the acoustic impedance of the absorber,and the operating frequency and bandwidth can be flexibly tuned in a wide band.Among the structural parameters,both the extended neck aperture and the extended neck tube length significantly affect the sound absorption performance of the sound absorber.The sound absorber has simple structure,thin thickness and good low frequency sound absorption performance. Reference | Related Articles | Metrics | Comments（0） Select Enhanced Biological Phosphorus Removal Process in Chemical Coagulation Treatment of Brewery Wastewater WANG Ziyan, ZHOU Zhixuan, HU Wenyong, ZHOU Yu Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 51-57.   DOI: 10.13438/j.cnki.jdzk.2025.01.008 Abstract （430）      PDF（pc） （1119KB）（244）       Knowledge map    Save On the basis of optimizing the dosage sites of composite chemicals (PAC+PFC+PAM),the total phosphorus (TP) removal efficiency was investigated with different pH,initial TP concentrations,Al，Fe，P molar ratio.Combined with the XRD phase analysis.The phosphorus removal mechanism of PAC+PFC+PAM was preliminary explored.The results show that the outlet point of BAF tank was the best adding point of PAC+PFC+PAM.The n(Al)∶n(Fe)∶n(P)=0.76∶0.50∶1.00,and the pH was 8.0.The TP removal efficiency was 98.72%.Moreover,the TP removal efficiency was hardly affected by the change of TP concentration of the influent water.The TP content of the effluent water was lower than 2.0 mg/L.In addition,the XRD results showed that the main components of the precipitates were FerPO4(OH)3r-3 and Al(OH)3. Reference | Related Articles | Metrics | Comments（0） Select Study on Synthesis of 5-Amino-4-Nitrile-1,3-Diphenyl Pyrazole Catalyzed by Supported Ionic Liquid WEN Shiyue, AO Rongdong, LIN Shiyao, LI Peixi, ZHANG Yutao, HU Yulin Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 58-64.   DOI: 10.13438/j.cnki.jdzk.2025.01.009 Abstract （307）      PDF（pc） （3908KB）（230）       Knowledge map    Save In this study,a type of supported imidazolium ionic liquid SiO2@IL has been designed and synthesized.Its structure was analyzed by FT-IR,XRD,SEM and EDX.It was then applied to the one-step condensation reaction of malononitrile,benzaldehyde and phenylhydrazine to prepare the target product 5-amino-4-nitrile-1,3-diphenyl pyrazole.The results showed that the optimized reaction conditions for the condensation reaction were water as the solvent,0.3 g of catalyst,a reaction temperature at 45 ℃ and a reaction time for 3 h,under which the product yield was as high as 92%.Under the optimized process conditions,the catalytic reaction process could be scaled up to the molar level.The supported catalyst was easily separated from the product phase and could be stably recycled at least five times.This method had mild conditions,simple post-processing,high product purity,stable process,which meets the development direction of green chemistry and possesses good industrial application prospects. Reference | Related Articles | Metrics | Comments（0） Select Numerical Analysis on Working Performance of Composite Support with Bolt-Shotcrete and Reinforced Rib Under High Geostress LIAO Zhihe, QIN Weixing, HE Lijie, DAI Yu, HU Wei, YAO Di Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 65-69.   DOI: 10.13438/j.cnki.jdzk.2025.01.010 Abstract （337）      PDF（pc） （3309KB）（178）       Knowledge map    Save In order to reveal the joint bearing mechanism and working performance of shotcrete liner,radial bolt and reinforced rib in the composite structure under high geostress,the mechanical response of the composite support in a soft tunnel with a geostress of 30 MPa was conducted based on the finite difference method which can consider the broken failure effect of bolt.The simulation results show that the composite support can effectively restrict the deformation of weak surrounding rock and has good overall stability under high geostress,but the radial bolts are broke at the top of the tunnel,and continuous plastic yield zone appears in the shotcrete liner and reinforced rib on both sides of the tunnel walls.It is recommended to appropriately increase the strength parameters of the bolts and the concrete on both sides when designing the composite support with bolt-shotcrete and reinforced rib for weak rock masses under high geostress. Reference | Related Articles | Metrics | Comments（0） Select History,Current Situation,and Prospect of Military Materia Medica Research LI Yanzhen, JIN Shuo, LIU Si, LONG Sisi, TANG Jingyue, ZHANG Zuxin, YE Fan, CHEN Gongxi Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 70-77.   DOI: 10.13438/j.cnki.jdzk.2025.01.011 Abstract （590）      PDF（pc） （1376KB）（481）       Knowledge map    Save Military materia medica plays an important role in preventing and treating infectious diseases and trauma.It represents a convergence of Chinese herbal medicine and military medicine,integrating traditional and modern approaches.The development of military materia medica combines the research theories,methods,and techniques from medicine and pharmacology.Throughout history,herbalists have substantially contributed to the research and development of military herbology,achieving notable achievements.However,despite the rich history of China's military materia medica and the advanced nature of the application research,the research scope is limited and the foundational theoretical research is relatively weak.To address these gaps,it is necessary to strengthen the investigation and research of military materia medica resources in key regions,advance research on key categories and basic theories,and highlight the role of military materia medica in modern national defense. Reference | Related Articles | Metrics | Comments（0） Select Traditional Chinese Medicine Management of Excessive Stomach Heat Type Periodontitis:A Clinical Research Review HU Caihua, LI Chao, CHANG Chen, GONG Lingziyun, OU Zhongmin, LI Qican, ZHANG Luoqin Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 78-84.   DOI: 10.13438/j.cnki.jdzk.2025.01.012 Abstract （775）      PDF（pc） （765KB）（657）       Knowledge map    Save By reviewing and screening the literature on the treatment of periodontitis with excessive stomach fire in Chinese medicine from 1995 to 2024,which was included in databases such as CNKI,Wanfang,and VIP,this paper summarizes the research progress of Chinese medicine in the treatment of this disease.The results show that periodontitis falls within the category of "tooth socket wind and tooth bleeding" in Chinese medicine.The most common clinical syndrome is excessive stomach fire,which is caused by accumulated heat in the stomach ascending along the meridians.The treatment principle is to clear stomach heat and purge fire,cool blood and detoxify.The clinical treatment methods of periodontitis with excessive stomach fire in Chinese medicine are diverse,including traditional Chinese herbal medicine,acupuncture,auricular point plaster,and gargling.The main treatment method in clinical practice is traditional Chinese medicine,with frequently used herbs including coptis,rehmannia,paeonia,cimicifuga,and angelica.The therapeutic mechanism mainly involves reducing the levels of pro-inflammatory cytokines,reducing oxidative stress responses,inhibiting the growth of periodontal pathogenic bacteria,and enhancing the activity of periodontal ligament stem cells.The treatment of this disease with Chinese medicine is effective,safe,has few side effects,and is well accepted by patients. Reference | Related Articles | Metrics | Comments（0） Select Progress in Surgical Treatment and Perioperative Management of Pterygium TIAN Ruonan, PENG Zhengyu Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 85-89.   DOI: 10.13438/j.cnki.jdzk.2025.01.013 Abstract （578）      PDF（pc） （585KB）（354）       Knowledge map    Save By analyzing the recent research achievements at home and abroad on the surgical treatment of pterygium,the progress in surgical treatment methods,preoperative management,intraoperative management,postoperative management,and the prevention and treatment of surgical complications was explored.The surgical treatment methods mainly include pterygium excision + autologous limbal stem cell transplantation,pterygium excision + autologous conjunctival transplantation,pterygium excision + amniotic membrane transplantation,and pterygium excision + autologous limbal stem cell transplantation + amniotic membrane transplantation.Preoperative management mainly includes the auxiliary treatment with argon laser and the preservation of biological amniotic membrane.Intraoperative management mainly includes the application of femtosecond laser and the selection of suture methods.Postoperative management mainly involves the application of cyclosporine A,bandage contact lenses,and 5-fluorouracil.The prevention and treatment of surgical complications mainly involve recurrent pterygium and other complications (such as subconjunctival hemorrhage,graft edema,graft detachment,graft retraction,graft slippage,granuloma,etc.). Reference | Related Articles | Metrics | Comments（0） Select Impact of Policy Perception on College Students' Grassroots Employment Intention:A Moderated Mediation Model PENG Liping Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 90-95.   DOI: 10.13438/j.cnki.jdzk.2025.01.014 Abstract （625）      PDF（pc） （625KB）（536）       Knowledge map    Save To investigate the impact of policy perception on college students' grassroots employment intention,a mediating model was constructed in which policy perception impact s college students' grassroots employment intention through public service motivation,and the moderating role of career adaptability in this model was examined.Using structural equation modeling on 1 320 valid questionnaires,the results showed that:policy perception had a significant positively predictive effect on college students' grassroots employment intention.Public service motivation played a mediating role between policy perception and college students' grassroots employment intention.Career adaptability moderated both the direct effect of policy perception on college students' grassroots employment intention and the indirect effect through public service motivation. Reference | Related Articles | Metrics | Comments（0） Select Journal of Jishou University(Natural Sciences Edition)    2025, 46 (1): 96-96.   Abstract （183）      PDF（pc） （145KB）（160）       Knowledge map    Save Related Articles | Metrics | Comments（0） Select 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 （207）      PDF（pc） （1537KB）（93）       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） Select 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 （220）      PDF（pc） （2983KB）（99）       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） Select 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 （248）      PDF（pc） （1705KB）（111）       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） Select 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 （287）      PDF（pc） （1828KB）（128）       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） Select 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 （204）      PDF（pc） （1257KB）（77）       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） Select 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 （191）      PDF（pc） （758KB）（88）       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） Select 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 （196）      PDF（pc） （2787KB）（71）       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） Select 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 （525）      PDF（pc） （26482KB）（530）       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） Select 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 （442）      PDF（pc） （9005KB）（163）       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） Select 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 （247）      PDF（pc） （22772KB）（180）       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） Select 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 （251）      PDF（pc） （681KB）（124）       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） Select 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 （163）      PDF（pc） （515KB）（127）       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） Select 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 （172）      PDF（pc） （464KB）（92）       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） Select 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 （159）      PDF（pc） （674KB）（91）       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） Select 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 （162）      PDF（pc） （536KB）（89）       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） Select 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 （154）      PDF（pc） （780KB）（74）       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） Select 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 （202）      PDF（pc） （990KB）（95）       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） Select 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 （153）      PDF（pc） （1785KB）（86）       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） Select 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 （235）      PDF（pc） （21367KB）（183）       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） Select 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 （269）      PDF（pc） （5551KB）（379）       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） Select 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 （169）      PDF（pc） （683KB）（151）       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） Select 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 （196）      PDF（pc） （852KB）（420）       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） Select 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 （157）      PDF（pc） （798KB）（68）       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） Select 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 （152）      PDF（pc） （522KB）（67）       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） Select 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 （141）      PDF（pc） （643KB）（63）       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） page Page 1 of 2 Total 64 records First page Prev page Next page Last page