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| 1 | ^(15)N isotope fractionation in an aquatic food chain:Bellamya aeruginosa(Reeve) as an algal control agent显示文摘15N isotope tracer techniques and ecological modeling were adopted to investigate the fractionation of nitrogen,its uptake and transformation in algae and snail(Bellamya aeruginosa Reeve).Different algal species were found to differ in their uptake of nitrogen isotopes.Microcystis aeruginisa Ktz.demonstrated the greatest 15N accumulation capacity,with the natural variation in isotopic ratio(δ 15N) and the isotope fractionation factor(ε,‰) being the highest among the species investigated.The transformation and utilization of 15N by snails differed depending on the specific algae consumed(highest for Chlorella pyrenoidosa Chick.,lowest for M.aeruginisa).When snails was seeded in the experimental pond,the algae population structure changed significantly,and total algal biomass as well as the concentration of all nitrogen species decreased,causing an increase in water transparency.A model,incorporating several chemical and biological parameters,was developed to predict algal biomass in an aquatic system when snails was present.The data collected during this investigation indicated that the gastropods such as snails could significantly impact biological community and water quality of small water bodies,suggesting a role for biological control of noxious algal blooms associated with eutrophication. | Shiqun Han Shaohua Yan Kaining Chen Zhenhua Zhang Rengel Zed Jianqiu Zhang Wei Song Haiqin Liu | 2010 | Journal of Environmental Sciences2010，22，2： | 14 |
| 2 | Dynamic stiffness characteristics of aero-engine elastic support structure and its effects on rotor systems:mechanism and numerical and experimental studies显示文摘The support structure of a rotor system is subject to vibration excitation,which results in the stiffness of the support structure varying with the excitation frequency(i.e.,the dynamic stiffness).However,the dynamic stiffness and its effect mechanism have been rarely incorporated in open studies of the rotor system.Therefore,this study theoretically reveals the effect mechanism of dynamic stiffness on the rotor system.Then,the numerical study and experimental verification are conducted on the dynamic stiffness characteristics of a squirrel cage,which is a common support structure for aero-engine.Moreover,the static stiffness experiment is also performed for comparison.Finally,a rotor system model considering the dynamic stiffness of the support structure is presented.The presented rotor model is used to validate the results of the theoretical analysis.The results illustrate that the dynamic stiffness reduces the critical speed of the rotor system and may lead to a new resonance. | Lei LI Zhong LUO Kaining LIU Jilai ZHOU | 2023 | Applied Mathematics and Mechanics(English Edition)2023，44，2： | 2 |
| 3 | Comparison of three flocculants for heavy cyanobacterial bloom mitigation and subsequent environmental impact显示文摘Cyanobacteria can accumulate as a heavy biomass on the leeward side of large eutrophic lakes,posing a potential threat to public health.The mitigating capacity of three flocculants and their potential impacts on the major environmental features of water and sediments was evaluated.Results indicate that polyaluminum chloride(PAC)and ferric chloride(FeCl)are efficient flocculants that can rapidly mitigate cyanobacterial blooms with chlorophyll-a concentrations higher tnan 1500 ug/L within 15 min.In comparison,cationic starch with chitosan could only treat cyanobacterial blooms in chlorophyll-a concentrations of less than 200μg/L.The addition of FeClcaused a decline in the pH value,while dissolved oxygen in the water column dropped to 2 mg/L during cationic starch with chitosan treatment for a high cyanobacterial biomass group.Thus,a combination of flocculants and oxygenators should be considered when treating high-concentration cyanobacterial blooms for emergency purposes.Additionally,the cell lysis of cyanobacteria caused by cationic starch with chitosan can result in an increase in total dissolved phosphorus and total dissolved nitrogen.Furthermore,the high accumlation of nutrients in sediments after the settling of cyanobacteria can cause high internal phosphorus pollution.The increase in the total organic carbon of the sediments can threaten lake restoration achieved by planting submerged macrophytes. | Kaixuan LIU Lei JIANG Jinsheng YANG Shuzhan MA Kaining CHEN Yufeng ZHANG Xiaoli SHI | 2022 | Journal of Oceanology and Limnology2022，40，5： | 1 |
| 4 | Malaria exacerbates experimental mycobacterial infection in vitro and in vivo显示文摘 | Michael Hawkes Xiaoming Li Maryanne Crockett Angelina Diassiti W. Conrad Liles Jun Liu Kevin C. Kain | 2010 | Microbes and Infection2010，，11： | 1 |
| 5 | Secrets of Success: Assessing the Large Increases in Transit Ridership Achieved by Houston and San Diego Transit Providers显示文摘 | Kain J Liu Z | 1999 | Transportation Research Part A: Policy and Practice1999，33，78： | 1 |
| 6 | NaSICON:A promising solid electrolyte for solid-state sodium batteries显示文摘A surge of interest has been brought to all-solid-state batteries(ASSBs)as they show great prospects for enabling higher energy density and improved safety compared to conventional liquid batteries.Na Super Ionic CONductors(NaSICONs)proposed by Goodenough and Hong in 1976 are the most promising materials class for Nabased ASSBs owing to their excellent ion conductivity(>1mS cm−1),high thermal and chemical/electrochemical stability,as well as good chemical/electrochemical compatibility with electrode materials.The major challenge facing NaSICONtype electrolytes is the generally high interfacial resistance and thus sluggish charge transfer kinetics across the NaSICON/cathode interface.Great endeavors in the past few years have led to progress in the improvement of the ion-conducting property,and a dramatic decrease in the NaSICON/electrode interface resistance.Excellent cycling performance and rate capability have been achieved through interface engineering.In this review article,we summarize the state-of-theart findings for various derivatives of NaSICON structured solid electrolytes,with the aim of providing a deeper understanding of the underlying mechanism for the improvement of ion conductivity,and the intrinsic reasons for the enhanced interface charge transfer kinetics.These strategies can be readily extended to other solid electrolytes.We hope this review will inspire more work on NaSICONtype solid electrolytes and solid-state batteries. | Chi Li Rui Li Kaining Liu Rui Si Zhizhen Zhang Yong-Sheng Hu | 2022 | Interdisciplinary Materials2022，1，3： | 1 |
| 7 | Necessary and sufficient conditions for the Hurwitz and Schur stability of interval matrices显示文摘 | Wang Kaining Michel A N Liu Derong | 1994 | IEEE Trans on Automatic Control1994，39，6： | 1 |
| 8 | A method for detecting two-dimensional plane stress distribution in basin-type insulator based on critically refracted longitudinal wave显示文摘Basin-type insulator often has small cracks due to stress concentration.The current method cannot accurately reflect the stress condition of the insulator to find the stress concentration areas.To solve these problems,a method for detecting two-dimensional plane stress(δ_(1) andδ_(2))within different depth ranges in a basin-type insulator is proposed based on critically refracted longitudinal(LCR)wave.First,the acoustoelastic equation characterising the relationship between the variation of LCR wave propagation time and the plane stress was derived.Next,the propagation characteristics of LCR wave in epoxy resin samples were investigated.Then,the stress distribution within different depth ranges of the insulator subjected to hydraulic load was measured using the proposed method,including direction(θ),δ_(1) andδ_(2).The results show that the magnitude of the stress alone cannot accurately characterise the stress state.Points with equal distances to the centre have similar stress magnitudes,but their directions are not the same.With increasing depth,θremains essentially unchanged at the same location,whileδ1 andδ2 decrease,and the rate of decrease varies at different locations.Comparing the measured and simulated data,the results showed that they were in good agreement,and the maximum errors of stress value andθwere 0.69 MPa and 2.97°,respectively,which confirmed the feasibility and accuracy of the stress detection in the proposed method. | Zhaoyang Kang Fuqiang Ren Hongru Zhang Jingjing Yang Kaining Hou Qingquan Li Dongxin He Hongshun Liu Yongzhi Zhao Huaxin Wen | 2024 | High Voltage2024，9，1： | 0 |
| 9 | Contamination degree prediction of insulator surface based on exploratory factor analysis-least square support vector machine combined model显示文摘This study presents a combined model based on the exploratory factor analysis(EFA)and the least square support vector machine(LSSVM)to predict the contamination degree of insulator surface.Firstly,EFA method is utilised to reduce numerous influence factor variables of the insulator contamination into a few factor variables,which could decrease the complexity of the model.Then,regarding the above factor variables as new input variables,LSSVM model is established to predict the insulator contamination de-gree.In order to obtain the optimal predictive value,the non-dominated sorting genetic algorithm II is applied on the optimization of LSSVM model parameters.The proposed EFA-LSSVM combined model is compared with the models of LSSVM,back propa-gation neural network,and multiple linear regression on the model performance.Results indicate that the EFA-LSSVM combined model in this study effectively overcomes the shortcomings of the other three models mentioned above in computational time,pre-diction accuracy and generalization ability.Finally,the feasibility of the proposed model in predicting contamination degree of insulator surface is verified by adopting the radar map of the evaluation indexes of model performance. | Jiaxiang Sun Hongru Zhang Qingquan Li Hongshun Liu Xinbo Lu Kaining Hou | 2021 | High Voltage2021，6，2： | 0 |
| 10 | Solvents incubatedπ-πstacking in hole transport layer for perovskite-silicon 2-terminal tandem solar cells with 27.21%efficiency显示文摘Room temperature sputtered inorganic nickel oxide(NiO_(x))is one of the most promising hole transport layers(HTL)for perovskite-sillion 2-terminal tandem solar cells with the aid of ultrathin and compact organic layers to passivate the surface defects.In this study,the aromatic solvent with different substituent groups was used to regulate the conformation of poly[bis(4-phenyl)(2,4,6-trimethylphenyl)am ine](PTAA)layer.As a result,the single-junction perovskite solar cell(PSC)gained a power conversion efficiency(PCE)of 20.63%,contributing to a 27.21%efficiency for monolithic perovskite/silicon(double-side polished)2-terminal tandem solar cell,by applying the alkyl aromatic solvent to enhance theπ-πstacking of PTAA molecular chains.The tandem solar cell can maintain 95%initial efficiency after aging over 1000 h.This study provides a universal approach for improving the photovoltaic performance of NiO_(x)/polymer-based perovskite/silicon tandem solar cells and other single junction inverted PSCs. | Qiaoyan Ma Jufeng Qiu Yuzhao Yang Fei Tang Yilin Zeng Nanxi Ma Bohao Yu Feiping Lu Chong Liu Andreas Lambertz Weiyuan Duan Kaining Ding Yaohua Mai | 2023 | Journal of Energy Chemistry2023，，7： | 0 |
| 11 | Improved information entropy weighted vague support vector machine method for transformer fault diagnosis显示文摘A combined model based on improved information entropy and vague support vector machine(IVSVM)is introduced into transformer fault diagnosis using dissolved gas analysis in oil(DGA).The improved information entropy method is used to obtain the weights of each gas and to weight the raw data,and the processed training data and the corresponding fault types are inputted into the vague support vector machine(VSVM)model to obtain classifiers.Firstly,the training data are weighted by the improved information entropy method to discretise the original data from the mixed state for subsequent classifier training.Then,the vague set divides the events into true,false and unknown factors,which can optimise the sub-interface of SVM and improve the accuracy of the boundary point clas-sification.Finally,fault data from the literature and actual collections are selected for training and testing.By comparing with the widely used ratio method and artificial intelligence method,it can be concluded that the method described herein can effectively improve the accuracy of fault diagnosis.The result shows that this method has better applicability when facing actual fault type classification with higher data similarity. | Hongru Zhang Jiaxiang Sun Kaining Hou Qingquan Li Hongshun Liu | 2022 | High Voltage2022，7，3： | 0 |
| 12 | The impact of the accumulation of algal blooms on reed wetlands in the littoral zones of Chaohu Lake显示文摘In a large eutrophic lake,the littoral zone is normally an area with high-density elevated aquatic plant life,including algal blooms,where the presence of reed wetlands allows the accumulation of algae.In this study,the impact of accumulated algal blooms in reed wetlands in the littoral zone s of Chaohu Lake was investigated seasonally from 2018 to 2019.The concentrations of chlorophyll a(Chl a),total nitrogen(TN),and total phosphorus(TP)were much higher in the reed-covered littoral zones(RCLZ)than in the unvegetated littoral zones(ULZ),indicating that more algal biomass was trapped and accumulated in the RCLZ.Algal biomass could be horizontally transported to downwind littoral zones under low wind speeds,favoring the establishment of blooms.Algal accumulation levels were highest in summer due to high water temperatures and algal biomasses.Likewise,the northern littoral zones were conducive to the development of large algal blooms because of the wind pattern.The values of TN,TP,Chl a,and loss on ignition in surface sediments were higher in the RCLZ than in the ULZ.Moreover,the diffusive fluxes of ammonium and soluble reactive pho sphorus were also higher in the RCLZ than in the ULZ.Considering the capability of reed wetlands to trap algae,mechanical salvage and other physical methods should be adopted to eliminate algal biomass when massive blooms accumulate in the RCLZ. | Shuzhan MA Yue WU Siwen CHEN Bingfa CHEN Cheng LIU Xiaozhi GU Xiaoli SHI Kaining CHEN | 2022 | Journal of Oceanology and Limnology2022，40，5： | 0 |
| 13 | Reform and Innovation of Education and Teaching in the Information Age--Comment on “Research on Education and Teaching Theory and Practice in the Information Age”显示文摘This paper takes“Research on Education and Teaching Theory and Practice in the Information Age”as the main research object,and discusses the importance and influence of education and teaching reform and innovation in the information age.First,it introduces the background of education in the information age,including the characteristics of the information age and the development status of education.Secondly,it summarizes the main content of the book“Research on the Theory and Practice of Education and Teaching in the Information Age.”Lastly,the key points of education and teaching reform in the information age are discussed in order to provide effective guidelines and support for the practice of future education and teaching reform. | Kaining Liu | 2023 | Journal of Contemporary Educational Research2023，7，8： | 0 |
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