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A study of integrated pest management models with instantaneous and non-instantaneous impulse effects

Mathematical Biosciences and Engineering 2024年第2期21卷 3063-3094页

作者： Wu, Liping Xiang, Zhongyi School of Mathematics and Statistics Hubei Minzu University Hubei Enshi445000 China Hubei Key Laboratory of Biologic Resources Protection and Utilization Hubei Minzu University Hubei Enshi445000 China

The occurrence of pests and diseases during agricultural production affects the quality and quantity of agricultural products. It is important to evaluate the impact of various factors on pests to achieve optimal results of integrated pest management (IPM) during its implementation. In this paper, we considered the transient and non-transient effects of chemical control on pests and the effects on natural enemies at different times, and developed a corresponding pest control model. Detailed studies and comparisons were conducted for spraying pesticides either more or less frequently as compared to strategies for releasing natural enemies. The threshold conditions for global asymptotic stabilization of the pest extinction period solution was obtained. Using two-parameter and sensitivity analysis techniques, the parameters affecting the variation of the threshold were discussed. By comparing these two pest control strategies, we found the existence of optimal application and release frequencies. Finally, in order to control pests below the economic threshold level, the state-dependent pest model was numerically investigated. The results show that the presence or absence of chemical control of pests can depend on the values taken for the parameters in the model. Based on this information, pest control experts can make decisions about the best spraying time and the best release rate. © 2024 American Institute of Mathematical Sciences. All rights reserved.

关键词： Sensitivity analysis

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Photocatalytic Degradation of Congo Red Using an S-scheme Heterojunction Photocatalyst Based on Bismuth Compounds

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Journal of Wuhan University of Technology(Materials Science) 2025年第3期40卷 644-649页

作者： JIA Yunfei TAN Haiyan YUAN Hong CHENG Xinhua SHI Xinyu Hubei Key Laboratory of Biologic Resources Protection and Utilization School of Chemistry and Environmental EngineeringHubei Minzu UniversityEnshi 445000China Hubei Key Laboratory of Selenium Resources Research and Biological Applications Institute of Selenium Science and IndustryHubei Minzu UniversityEnshi 445000China National Demonstration Center for Experimental Chemis-try Education(Central China Normal University) College of ChemistryCentral China Normal UniversityWuhan 430079China

A BiOI/BiOBr S-scheme heterojunction photocatalyst was synthesized using a solvothermal method,and its ability to degrade Congo red was thoroughly *** photocatalytic performance of the BiOI/BiOBr heterojunction was compared with that of pure BiOBr and *** structural,morphological,optical,and electrical properties of the samples were characterized using X-ray diffraction(XRD),field emission scanning electron microscopy(FESEM),UV-vis diffuse reflectance spectroscopy(UV-vis DRS),and zeta potential *** degradation rate of Congo red was determined by spectrophotometry,revealing that the BiOI/BiOBr S-scheme heterojunction exhibited excellent photocatalytic performance,achieving a degradation rate of 96.8%for a 50 mg/L Congo red solution within 75 *** rate was significantly higher than those achieved by pure BiOBr(77.2%)and BiOI(83.1%).Theoretical calculations indicate that the S-scheme heterojunction effectively facilitates the separation of photogenerated charge carriers while preserving the strong redox ability of the *** characteristics are identified as the key factors underlying the superior photocatalytic degradation efficiency of the BiOI/BiOBr S-scheme heterostructure.

关键词： heterojunction congo red azo dye photocatalytic degradation charge transfer

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Adhesion between nanobubbles and fine cassiterite particles

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International Journal of Mining Science and Technology 2023年第4期33卷 503-509页

作者： Liuyi Ren Zheyi Zhang Weineng Zeng Yimin Zhang School of Resources and Environmental Engineering Wuhan University of TechnologyWuhan 430070China Hubei Key Laboratory of Mineral Resources Processing and Environment Wuhan 430070China State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control Wuhan University of Science and TechnologyWuhan 430081China Hubei Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources Wuhan 430081China

Adhesion is an important process of particle-bubble interaction in fine particle(-10μm)*** paper studied the adhesion process and mechanism between nanobubbles and fine cassiterite particles by using a high-speed camera,atomic force microscope(AFM),adsorption capacity tests,and induction time *** being pretreated with nanobubbles(NBs)water,fine cassiterite particles flotation tests were carried out using caprylhydroxamic acid(CHA)as a *** results showed that NBs can improve the recovery and flotation rate of fine cassiterite while decreasing the collector *** adsorption capacity test indicated that the cassiterite treated with NBs had lower demand for collector *** AFM imaging results further demonstrate that NBs could reduce the adsorption of CHA on the surface of *** NBs played a part of the role of collector,it can improve the flotation effect while reducing the amount of *** induction time test and the high-speed camera observation test showed that NBs promoted the attachment between bubbles and cassiterite *** the other hand,NBs agglomerate cassiterite particles,increasing the probability of particles colliding with bubbles.

关键词： Nanobubbles Cassiterite Flotation Caprylhydroxamic acid

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Odorant-binding protein 19 in Monochamus alternatus involved in the recognition of a volatile strongly emitted from ovipositing host pines

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Insect Science 2024年第1期31卷 134-146页

作者： Ruinan Yang Dongzhen Li Shancheng Yi Yi Wei Manqun Wang Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina Key Laboratory of Forest Protection of National Forestry and Grassland Administration Ecology and Nature Conservation InstituteChinese Academy of ForestryBeijingChina

Monochamus alternatus is the primary carrier of pine wood nematodes,which pose a serious threat to Pinus *** many *** emerging *** adults feed on heathy host pines,while matured adults transfer to stressed host pines for mating and *** odorant-binding proteins(OBPs)of *** have been proved to aid in the complex process of host *** clarify the corresponding relations between OBPs and pine volatiles,more OBPs need to be *** this research,MaltOBP19 showed a specific expression in the antennae and mouthparts of ***,and it was marked in 4 types of antenna sensilla by *** binding assays demonstrated the high binding affinity of MaltOBP19 with camphene and myrcene in *** Y-tube olfactory experiments,*** adults were attracted by camphene and RNAi of OBP19 via microinjection significantly decreased their attraction *** induced phobotaxis,but RNAi had no significant effect on this ***,we found that ingesting dsOBP19 produced by a bacteria-expressed system with a newly constructed vector could lead to the knockdown of *** results suggest that MaltOBP19 may play a role in the process of host conversion via the recognition of camphene,which has been identified to be strongly released in stressed host *** addition,it is proved that knockdown of OBP can be achieved by oral administration of bacteria-expressed double-stranded RNA in *** adults,providing a new perspective in the control of ***.

关键词： bacteria-expressed dsRNA camphene Japanese pine sawyer beetle MaltOBP19 RNAi stressed host pines

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Metabolome profiling of stratified seeds provides insight into the regulation of dormancy in Davidia involucrata

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Plant Diversity 2022年第4期44卷 417-427页

作者： Shiming Deng Qiang Xiao Cigui Xu Jian Hong Zhijun Deng Dan Jiang Shijia Luo Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province Hubei Minzu UniversityEnshi 445000Hubei ProvinceChina Beijing Advanced Innovation Center for Tree Breeding by Molecular Design National Engineering Laboratory for Tree BreedingCollege of Biological Sciences and BiotechnologyBeijing Forestry UniversityBeijing 100083China

Dove tree(Davidia involucrata),a tertiary vestige species,is well-adapted to cool *** in *** seed lasts for an extremely long period of time,typically between 3 and 4 years,and this characteristic makes the species an excellent model for studying the mechanisms of seed *** molecular mechanisms governing germination control in *** are still *** stratification have been reported to enhance germination in recalcitrant *** performed a widely targeted metabolome profiling to identify metabolites and associated pathways in *** seeds from six different moist sand stratification durations(0-30 months) using the ultra-high-performance liquid chromatography-Q Exactive Orbitrap-Mass *** was an increasing germination rate with prolonged stratification durations(12-30 months).Furthermore,we detected 10,008 metabolites in the stratified *** also detected 48 differentially accumulated metabolites(DAMs) between all stratification periods in the seeds,with 10 highly conserved *** of the differentially accumulated metabolites between unstratified and stratified seeds were enriched in purine metabolism,pyrimidine metabolism,flavone and flavonol biosynthesis,phenylpropanoid biosynthesis,and arginine biosynthesis *** phytohormones,abscisic acid,indole-3 acetic acid,and sinapic acid were differentially accumulated in the seeds and are predicted to regulate dormancy in *** have provided extensive metabolic information useful for future works on dove tree germination study.

关键词： Dove tree Metabolome Dormancy Abscisic acid Stratification

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Reactive Transport Process of Earthquake-induced Hydrochemical Changes in Guanding Thermal Spring,Western Sichuan,China

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Acta Geologica Sinica(English Edition) 2024年第1期98卷 241-249页

作者： NA Jin JIANG Xue SHI Zheming CHEN Yanmei Hubei Key Laboratory of Petroleum Geochemistry and Environment(Yangtze University) Wuhan 430100China School of Environmental Studies China University of GeosciencesWuhan 430074China School of Water Resources and Environment China University of GeosciencesBeijing 100083China State Key Laboratory of Water Resource Protection and Utilization in Coal Mining Beijing 100000China

Earthquake-related hydrochemical changes in thermal springs have been widely observed;however,quantitative modeling of the reactive transport process is *** the present study,we apply reactive transport simulation to capture the hydrochemical responses in a thermal spring following the Wenchuan Ms 8.0 and Lushan Ms 7.0 *** first constrain deep reservoir geothermal fluid compositions and temperature by multicomponent geothermometry,and then a reactive geochemical transport model is constructed to reproduce the hydrochemical evolution *** results show that the recharge from the shallow aquifer increases gradually until it reaches a peak because of the permeability enhancement caused by the Lushan earthquake,which may be the mechanism to explain the earthquake-related hydrochemical *** contrast to the postseismic effect of the Wenchuan earthquake,the chemical evolution can be considered as hydrochemical anomalies related to the Lushan *** study proves that the efficient simulation of reactive transport processes is useful for investigating earthquake-related signals in hydrochemical time series.

关键词： earthquake hydrochemical changes reactive geochemical transport model Kangding area

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Characterization and comparison of organic functional groups effects on electrolyte performance for vanadium redox flow battery

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Frontiers of Chemical Science and Engineering 2023年第9期17卷 1221-1230页

作者： Ling Ge Tao Liu Yimin Zhang Hong Liu School of Resource and Environmental Engineering Wuhan University of Science and TechnologyWuhan430081China State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control Hubei Collaborative Innovation Center for High Efficient Utilization of Vanadium ResourcesWuhan University of Science and TechnologyWuhan430081China Collaborative Innovation Center of Strategic Vanadium Resources Utilization Wuhan University of Science and TechnologyWuhan430081China Hubei Provincial Engineering Technology Research Center of High Efficient Cleaning Utilization for Shale Vanadium Resource Wuhan University of Science and TechnologyWuhan430081China

The vanadium redox flow battery with a safe and capacity-controllable large-scale energy storage system offers a new method for the *** this case,acetic acid,methane sulfonic acid,sulfonic acid,amino methane sulfonic acid,and taurine are used to overcome the low electrolyte energy density and stability limitations,as well as to investigate the effects of various organic functional groups on the vanadium redox flow *** compared to the pristine electrolyte(0.22 Ah,5.0 Wh·L^(−1),85.0%),the results show that taurine has the advantage of maintaining vanadium ion concentrations,discharge capacity(1.43 Ah),energy density(33.9 Wh·L^(−1)),and energy efficiency(90.5%)even after several *** acetic acid electrolyte is more conducive to the low-temperature stability of the V(II)electrolyte(177 h at−25℃)than pristine(82 h at−2℃).The−SO_(3)H group,specifically the coaction of the−NH_(2)and−SO_(3)H groups,improves electrolyte ***−NH_(2)and−COOH additive groups improved conductivity and electrochemical activity.

关键词： vanadium redox flow battery functional groups organic additives energy density stability

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Optimized the vanadium electrolyte with sulfate-phosphoric mixed acids to enhance the stable operation at high-temperature

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Frontiers of Chemical Science and Engineering 2024年第2期18卷 13-26页

作者： Ling Ge Tao Liu Yimin Zhang Hong Liu School of Resource and Environmental Engineering Wuhan University of Science and TechnologyWuhan 430081China State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control Wuhan University of Science and TechnologyWuhan 430081China Hubei Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources Wuhan University of Science and TechnologyWuhan 430081China Hubei Provincial Engineering Technology Research Center of High Efficient Cleaning Utilization for Shale Vanadium Resource Wuhan University of Science and TechnologyWuhan 430081China School of Resource and Environmental Engineering Wuhan University of TechnologyWuhan 430070China

Herein, the influence of the concentration design and comprehensive performance of the sulfate-phosphoric mixed acid system electrolyte is investigated to realize an electrolyte that maintains high energy density and stable operation at high temperatures. Static stability tests have shown that VOPO4 precipitation occurs only with vanadium(V) electrolyte. The concentration of vanadium ion of 2.0–2.2 mol·L^(–1), phosphoric acid of 0.10–0.15 mol·L^(–1), and sulfuric acid of 2.5–3.0 mol·L^(–1) are suitable for a vanadium redox flow battery in the temperature range from –20 to 50 ℃. The equations for predicting the viscosity and conductivity of electrolytes are obtained by the response surface method. The optimized electrolyte overcomes precipitation generation. It has 2.8 times higher energy density than the non-phosphate electrolyte, and a coulomb efficiency of 94.0% at 50 ℃. The sulfate-phosphoric mixed acid system electrolyte promotes the electrode reaction process, increases the current density, and reduces the resistance. This work systematically optimizes the concentrations of composition of positive and negative vanadium electrolytes with mixed sulfate-phosphoric acid. It provides a basis for the different valence states and comprehensive properties of sulfate-phosphoric mixed acid system vanadium electrolytes under extreme environments, guiding engineering applications.

关键词： all vanadium redox flow battery mixed-acid vanadium electrolyte concentration optimization response surface methodology high-temperature stability

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Case Report of Acute Peritonitis with Blood Infection of Neisseria meningitidis

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Biomedical and Environmental Sciences 2022年第2期35卷 151-154页

作者： XIA Xian LYU Jing CAI Xuan HU Yuan Liang HE Fei LI Guo Ming YANG Hong Mei Hubei Key Laboratory of Edible Wild Plants Conservation&Utilization Hubei Engineering Research Center of Characteristic Wild Vegetable Breeding and Comprehensive Utilization TechnologyHuangshi Key Laboratory of Lake Environmental Protection and Sustainable Utilization of ResourcesHubei Normal UniversityHuangshi 430070HubeiChina Hubei Provincial Center for Disease Control and Prevention Wuhan 430079HubeiChina Renmin Hospital of Wuhan University Wuhan 430060HubeiChina

Neisseria meningitidis(***)is a gram negative *** meningitidis(meningococcus)was first identified in the cerebrospinal fluid of a patient with meningitis in 1887 by Weichselbaum,and the epidemic was traced back to 1805[1].The serogroups A,B,C,W,X,and Y were the most frequent causes of meningococcal diseased[1].*** usually colonizes the human nasopharynx[2].The common clinical manifestations of invasive *** infection are meningococcemia and acute meningitis[2].Some patients with meningococcal disease may present with pneumonia,arthritis,pericarditis,conjunctivitis,epiglottitis,sinusitis,otitis,urethritis,and proctitis[2].However,patients rarely present with acute peritonitis initially.

关键词： Blood acute patients

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Fabrication of green one-part geopolymer from silica-rich vanadium tailing via thermal activation and modification

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International Journal of Minerals,Metallurgy and Materials 2022年第1期29卷 177-184页

作者： Shenxu Bao Yongpeng Luo Yimin Zhang Hubei Key Laboratory of Mineral Resources Processing and Environment Wuhan University of TechnologyWuhan 430070China School of Resources and Environmental Engineering Wuhan University of TechnologyWuhan 430070China State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control Wuhan University of Science and TechnologyWuhan 430081China Hubei Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources Wuhan University of Science and TechnologyWuhan 430081China

The aim of this investigation was to prepare geopolymeric precursor from vanadium tailing(VT)by thermal activation and *** activation,a homogeneous blend of VT and sodium hydroxide was calcinated at an elevated temperature and then modified with metakaolin to produce a geopolymeric *** the thermal activation,the VT was corroded by sodium hydroxide and then sodium silicate formed on the particle *** water was added,the sodium silicate coating dissolved to release silicon species,which created an alkaline solution *** metakaolin then dissolved in the alkaline environment to generate aluminum species,which was followed by *** VT particles were connected by a gel produced during geopolymerization,which yielded a geopolymer with excellent mechanical *** investigation not only improves the feasibility of using geopolymer technology for large-scale and in-situ applications,but also promotes the utilization of VT and other silica-rich solid wastes.

关键词： vanadium tailing thermal activation geopolymeric precursor compressive strength leaching behavior

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