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High Voltage 2024年第2期9卷 296-308页

作者： lijun Yang Zhidong Cheng li Cheng Ruijin liao State Key Laboratory of Power Transmission Equipment Technology School of Electrical EngineeringChongqing UniversityChongqingChina

Because DC conductivities of oil-paper materials can be easily affected by electric field and temperature,the electrical properties under electro-thermal coupling of oil-paper materials should be considered when optimising the insulation structure of valve-side winding of the converter *** on the finite element multi-physical field coupling simulation,the multi-objective optimisation of main insulation structure of valve-side winding is carried *** view of the high time consuming of multi-physical field calculation and the actual needs of an insulation structure optimisation,the Kriging method and technique for order preference by similarity to the ideal solution(TOPSIS)method are introduced,and combines them with NSGA-II to obtain a joint algorithm that can be used for the optimisation of insulation structure of the converter *** using the joint algorithm of multi-objective optimisation,the insulation structure configuration scheme of valve-side winding is *** can be seen from the experiment result that,on the one hand,the joint algorithm adopted can obtain the insulation structure configuration scheme that meets the design *** the other hand,when facing the configuration scheme optimisation under multi-field coupling,the computational time required by this method is only 0.15%of that required by original genetic algorithm.

关键词： converter insulation coupling

Effect of heavy metals on soil microbial activity and diversity in a reclaimed mining wasteland of red soil area

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Journal of Environmental Sciences 2005年第5期17卷 832-837页

作者： liao Min CHEN Cheng-li HUANG Chang-yong College of Environmental and Resources Sciences Zhejiang University Hangzhou 310029 China

The microbial biomass, basal respiration and substrate utilization pattern in copper mining wasteland of red soil area, southern China, were investigated. The results indicated that soil microflora were obviously different compared with that of the non-mine soil. Microbial biomass and basal respiration were negatively affected by the elevated heavy metal levels. Two important microbial ecophysiological parameters, namely, the ratio of microbial biomass C（ Cmic ）/organic C（ Corg ） and metabolic quotient（qCO2 ） were closely correlated to heavy metal stress. There was a significant decrease in the Cmic/Corg ratio and an increase in the metabolic quotient with increasing metal concentration. Multivariate analysis of Biolog data for sole carbon source utilization pattern demonstrated that heavy metal pollution had a significant impact on microbial community structure and functional diversity. All the results showed that soil microbiological parameters had great potential to become the early sensitive, effective and liable indicators of the stresses or perturbations in soils of mining ecosystems.

关键词： reclaimed mining wasteland soil microorganism soil microbial diversity

Mechanical properties of electroformed copper layers with gradient microstructure

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International Journal of Minerals,Metallurgy and Materials 2010年第1期17卷 69-74页

作者： Qiang liao li-qun Zhu Hui-cong liu Wei-ping li School of Materials Science and Engineering Beihang University Beij ing 100191 China

The electroformed copper layer with gradient microstructure was prepared using the ultrasonic technique. The microstructure of the electroformed copper layer was observed by using an optical microscope （OM） and a scanning electron microscope （SEM）. The preferred orientations of the layer were characterized by X-ray diffraction （XRD）. The mechanical properties were evaluated with a Vicker＇s hardness tester and a tensile tester. It is found the gradient microstructure consists of two main parts： the outer part （faraway substrate） with columnar crystals and the inner part （nearby substrate） with equiaxed grains. The Cu-（220） preferred orientation increases with the increasing thickness of the copper layer. The test results show that the microhardness of the electroformed copper layer decreases with increasing grain size along the growth direction and presents a gradient distribution. The tensile strength of the outer part of the electroformed copper layer is higher than that of the inner part but at the cost of ductility. Meanwhile, the integral mechanical properties of the electroformed copper with gradient microstrucmre are significantly improved in comparison with the pure copper deposit.

关键词： electroforming copper layer gradient rnicrostructure mechanical properties preferred orientation

Cyclic-acyclic monomers metathesis polymerization to access photodegradable polydicyclopentadiene and polyethylene-like materials

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Science China Chemistry 2024年第4期67卷 1311-1315页

作者： Wu li Daohong liao Yougui li Guifu Si Changle Chen School of Chemistry and Chemical Engineering Hefei University of TechnologyHefei 230009China Key Laboratory of Precision and Intelligent Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China

The development of degradable and recyclable polymers is an attractive strategy to tackle the post-consumption pollution issue of commercial ***-acyclic monomers metathesis polymerization(CAMMP)has been recently reported to produce degradable thermoset,thermoplastic and elastomeric polymers,and their degradability is enabled with addition of various *** this contribution,we demonstrate that the utilization of diene comonomers containing photodegradable moiety can give access to thermoset and thermoplastic materials bearing photo-degradation *** copolymerization of a series easily accessible diene comonomers bearing photodegradable ortho-nitrobenzyl moieties with dicyclopentadiene(DCPD)or cyclooctene(COE)leads to the formation of photodegradable p DCPD thermosets and p COE thermoplastic polymers with mechanical properties comparable to their non-degradable *** importantly,their photo-degradation properties can be efficiently tuned with the addition of ultraviolet absorber during in-situ polymerization.

关键词： metathesis polymerization photodegradable polydicyclopentadiene polyethylene-like materials

Experimental model of Fusarium solani keratitis in rats

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International Journal of Ophthalmology(English edition) 2011年第4期4卷 371-376页

作者： Jiang-li Zhu, Xin liao People's Hospital Affiliated to Tongji University School of Medicine Shanghai 200072 China People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine Shanghai 200011 China Department of Ophthalmology Shanghai East Hospital Affiliated to Tongji University School of Medicine Shanghai 200120 China

AIM: To establish a repeatable rat model of Fusarium solani keratitis (F. solani keratitis) that mimicked fungal keratitis in humans. METHODS: Wistar rats' corneas were scratched on the superficial stroma after scraping the unilateral corneal epithelia. Then, the corneal surface was inoculated with different inoculum dose of E solanispore suspension. Doses ranged from 10(6) to 10(9) colony-forming unit per milliliter (CFU/mL). The treated corneas were covered by contact lenses that were made of Parafilm M membrane. Negative controls were inoculated with sterile phosphate-buffered saline (PBS). For statistical analysis, corneas were evaluated daily on a 12-point scale to check the state of corneal inflammation. Furthermore, the pathological characteristics of this model were investigated. RESULTS: The rat model of F solani keratitis was established by the combination methods of corneal trauma and parafilm-made contact lens and inoculation of fungus spore suspension. 10(6) and 10(7)CFU/mL of F solani induced mild corneal infection, while 10(8)CFU/mL of F solani was sufficient to induce moderate infection that was consistent with human keratomycosis. Dose of 10(9)CFU/mL of E solani was excessive and led to perforated corneas. CONCLUSION: The rat model of E solani keratitis, established by the combinational methods of corneal trauma, parafilm-made contact lens and the appropriate dose of inoculum, that imitates the developing processes of F solani keratitis in human beings and provides a repeatable method of creating a rat model.

关键词： fungal keratitis Fusarium solani corneal trauma contact lens rat

Structural Characterization and Retention Time Simulation of Allergenic Fragrances

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Chinese Journal of Structural Chemistry 2020年第10期39卷 1753-1762,1741页

作者： li Jian-Feng liao li-Min College of Chemistry and Chemical Engineering Neijiang Normal UniversityNeijiang 641100China Key Laboratory of Fruit Waste Treatment and Resource Recycling Neijiang 641100China

By classifying non-hydrogen atoms of organic compounds,parametric dyeing,and establishing the relationship between non-hydrogen atoms,new structure descriptors were *** structures of 48 common allergenic fragrance organic compounds were parametrically *** multiple linear regression(MLR)and partial least-squares regression(PLS)methods were used to build two models of relationship between the compound structure and chromatographic retention *** stability of the models was evaluated by the"leave-one-out"cross test,and the predictive ability of the models was tested using an external sample *** correlation coefficients(R2)of the two models are 0.9791 and 0.9744,those(R(CV)~2)of the cross test are 0.8542 and 0.7464,and those(R(test)~2)of the external prediction are 0.9802 and 0.9367,indicating that the models built have good fitting ability,stability and external forecasting *** structural factors affecting the chromatographic retention time of the compounds were *** results show that the compound with more secondary carbon atoms may have larger chromatographic retention time(tR)*** paper has certain reference value for the study on the relationship between the structures and properties of allergenic fragrance organic compounds.

关键词： allergenic fragrance structure descriptor structure characterization simulation prediction

Advances in the treatment of rhegmatogenous retinal detachment

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International Journal of Ophthalmology(English edition) 2019年第4期12卷 660-667页

作者： li liao Xiao-Hua Zhu Department of Ophthalmology the Second Xiangya Hospital Central South University

The pathogenesis of rhegmatogenous retinal detachment depends on three factors, namely, retinal rupture, vitreous liquefaction and traction causing the retina to separate from the pigment epithelium, among which retinal rupture is the most important. Retinopathy is caused by a gap between the neurosensory retina and the retinal pigment epithelium, which severely damages the visual function of the patient. Therefore, early clinical discovery, prevention and selection of an appropriate treatment are important. This article reviews progress in the treatment of retinal detachment.

关键词： rhegmatogenous retinal detachment treatment progress sclera external-route surgery retinal laser photocoagulation pars plana vitrectomy

Electrochemical properties of Ca-Pb electrode for calcium-based liquid metal batteries

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International Journal of Minerals,Metallurgy and Materials 2020年第12期27卷 1723-1729页

作者： Xiao-hui Ning Chen-zheng liao Guo-qing li Center for Advancing Materials Performance from the Nanoscale(CAMP-Nano) State Key Laboratory for Mechanical Behavior of MaterialsXi'an Jiaotong UniversityXi'an 710049China

The Ca-Pb electrode couple is considered to be one of the least expensive(~36$/(k W·h))among various optional materials for liquid-metal batteries(LMBs).The electrochemical properties of Ca-Pb alloy in a Ca|li Cl-Na Cl-Ca Cl_(2)|Pb cell were investigated in this *** electrode potential maintained a linear relationship in the current density range of 50-200 m A·cm^-2,which indicates that the alloying and dealloying processes of Ca with Pb attained rapid charge transfer and mass transport in the interface between the liquid electrode and *** Ca-Pb electrode exhibited remarkable properties with a high discharge voltage of 0.6 V,a small self-discharge current density(98.84%).The postmortem analysis showed that intermetallics Ca Pb3 and Ca Pb were uniformly distributed in the electrode with different molar fractions of Ca,which indicates that the nucleation of solid intermetallics did not hinder the diffusion of Ca in the *** investigation on Ca-Pb electrode sheds light on the further research and the design of electrodes for Ca-based LMBs.

关键词： liquid-metal battery molten salt electrolyte Ca-Pb alloys electrochemical properties

Influence of Kinematic Analysis Parameters of Drag Anchor Trajectory Prediction Using Yield Envelope Method

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China Ocean Engineering 2020年第2期34卷 257-266页

作者： WU Xiao-ni WANG Teng liao Qian li Ye State Key Laboratory of Ocean Engineering School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China Department of Naval Architecture and Offshore Engineering China University of Petroleum(East China)Qingdao 266580China

Drag anchor is widely applied in offshore engineering for offshore mooring *** prediction of the invisible trajectory during its drag-in installation is challenging for anchor design in determining the anchor final position for ensuring sufficient holding *** yield envelope method based on deep anchor failure for kinematic analysis was proposed as a promising trajectory prediction method for drag ***,there is a lack of analysis on the effects of the parameters applied in the kinematic *** current work studies the effects of the yield envelope parameters,anchor line bearing capacity factor and the anchor/soil interface *** is found that the accuracy of the yield envelope parameters has large impact on the prediction results based on deep yield *** of cases with smooth fluke predict deeper embedment depth than that from analyses of cases with rough *** decrease of the capacity factor results in the increase of the anchor embedment depth,the anchor line load,the anchor chain angle and the stable value of the normalized horizontal load component for the same drag length,while the stable value of the normalized vertical load component decreases when the capacity factor *** illustrates the importance in applying reasonable parameters and improving the method for more reliable prediction of the anchor trajectory.

关键词： trajectory prediction kinematic analysis drag anchor yield envelope

VNLSTM-PoseNet: A novel deep ConvNet for real-time 6-DOF camera relocalization in urban streets

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Geo-Spatial Information Science 2021年第3期24卷 422-437页

作者： Ming li Jiangying Qin Deren li Ruizhi Chen Xuan liao Bingxuan Guo State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing Wuhan UniversityWuhanChina Department of Physics ETH ZurichZurichSwitzerland Department of Land Surveying and Geo-informatics The Hong Kong Polytechnic UniversityHong KongChina

Image-based relocalization is a renewed interest in outdoor environments,because it is an important problem with many *** introduces Convolutional Neural Network(CNN)for the first time to realize the real-time camera pose solution based on a single *** order to solve the problem of precision and robustness of PoseNet and its improved algorithms in complex environment,this paper proposes and implements a new visual relocation method based on deep convolutional neural networks(VNLSTM-PoseNet).Firstly,this method directly resizes the input image without cropping to increase the receptive field of the training ***,the image and the corresponding pose labels are put into the improved Long Short-Term Memory based(LSTM-based)PoseNet network for training and the network is optimized by the Nadam ***,the trained network is used for image localization to obtain the camera *** results on outdoor public datasets show our VNLSTM-PoseNet can lead to drastic improvements in relocalization performance compared to existing state-of-theart CNN-based methods.

关键词： Camera relocalization pose regression deep convnet RGB image camera pose