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Recent advances in g-CN-based heterojunction photocatalysts

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Journal of Materials Science & Technology 2020年第21期56卷 1-17页

作者： Yunfeng Li Minghua Zhou Bei Cheng yan shao College of Environmental and Chemical Engineering Xi’an Polytechnic UniversityXi’an710000China Hubei Key Laboratory of Wudang Local Chinese Medicine Research Hubei University of MedicineShiyan 442000China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Outpatient Taihe HospitalHubei University of MedicineShiyan 442000China

Semiconductor heterojunction photocatalysts have received much concern due to their great application prospect in solar energy utilization and *** construction of heterostructure with two or more semiconductor materials can integrate the advantages of multi-components to simultaneously improve the photo-induced charges separation,extend visible light absorption range and retain the high redox ability of ***,constructing of g-C3 N4-based heterostructure has become a hot focus due to the multiple merits of g-C3 N4,such as facile synthesis,high stability,unique optical and electronic *** review tries to give a comprehensive introduction and provide the possible tendency in design and fabrication of g-C3 N4-based heterojunction photocatalysts,especially in rational synthesis of type-II heterojunction,direct Z-scheme heterojunction,new type of S-scheme heterojunction,p-n heterojunction and Schottky ***,the special charges transfer mechanisms of g-C3 N4-based heterojunctions are discussed and their potential applications in photocatalytic water splitting,photo-degradation of contaminants and photo-reduction of CO2 into fuels are also ***,we attempt to propose some crucial issues based on the current research,which should be further investigated and resolved in this interesting research area.

关键词： Photocatalysis g-C3N4 Heterojunction Z-scheme S-scheme

Chromium enrichment in different crystalline phases of Cr-containing slag under various basicities and equilibrium temperatures

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Journal of Iron and Steel Research International 2022年第9期29卷 1412-1422页

作者： shao-wen Wu yan-ling Zhang Shuai Zhang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The effects of basicities and equilibrium temperatures on the enrichment of chromium in different mineral phases of synthesized argon-oxygen decarburization slags were investigated to understand the Cr concentrating behavior into Mg(Cr,Al)2O4 spinel phase and to determine the leaching stability of Cr-containing *** results showed that when the basicity decreased from 1.0 to 0.6 and temperatures decreased from 1600 to 800℃,the Cr content of amorphous phase and crystalline phase gradually decreased,with a subsequent increase in the Cr content of spinel *** range of Cr enrichment in spinel of slags S1,S2,and S3 is 92.03-96.89,91.63-96.36,and 90.67-95.42,*** mass fraction and the size of spinel increased with the decreasing equilibrium temperatures,and the Cr leaching values decreased ***,the trend of the amount of Cr-related ions in the leachate was consistent with the trend of Cr in the amorphous phase,diopside,and *** results suggest that the lower basicity and equilibrium temperatures could be conducive to stabilizing Cr into spinel phase to minimize Cr leaching into the environment.

关键词： Chromium enrichment Leaching behavior Basicity Temperature Cr-containing slag

Polynomial networks based adaptive attitude tracking control for NSVs with input constraints and stochastic noises

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Chinese Journal of Aeronautics 2021年第7期34卷 124-134页

作者： Xiaohui yan Mou CHEN Shuyi shao Qingxian WU College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China School of Artificial Intelligence and Big Data Hefei UniversityHefei 230601China

This paper proposes a backstepping technique and Multi-dimensional Taylor Polynomial Networks(MTPN)based adaptive attitude tracking control strategy for Near Space Vehicles(NSVs)subjected to input constraints and stochastic input ***,considering the control input has stochastic noises,and the attitude motion dynamical model of the NSVs is actually modeled as the Multi-Input Multi-Output(MIMO)stochastic nonlinear system ***,the MTPN is used to estimate the unknown system uncertainties,and an auxiliary system is designed to compensate the influence of the saturation control ***,by using backstepping method and the output of the auxiliary system,a MTPN-based robust adaptive attitude control approach is proposed for the NSVs with saturation input nonlinearity,stochastic input noises,and system *** Lyapunov stability theory is utilized to analysis the stability in the sense of probability of the entire closed-loop ***,by selecting appropriate parameters,the tracking errors will converge to a small neighborhood with a tunable ***,the numerical simulation results of the NSVs attitude motion show the satisfactory flight control performance under the proposed tracking control strategy.

关键词： Backstepping control Input constraints Multi-dimensional Taylor Polynomial Networks(MTPN) Near Space Vehicles(NSVs) Stochastic input noises

System Improvement of Judicial Procedure in the Progress of Social Legal System Construction

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学术界 2016年第5期 276-280页

作者： shao yan Institute of Law Chinese Academy of Social Sciences Shenyang Liaoning 110031

Judicial procedure,as a legal method to exercise the jurisdiction,has become an important element of the legal system *** improve the judicial procedure,legal procedure must be strictly complied with to complete the proceedings and the legitimate interests of the entities of the parties concerned and participants must be respected and *** reform of the judicial procedure system shall be strictly promoted and orderly carried out through scientific and reasonable setting,positive guidance in equal participation of both parties of the proceedings while making use of the security mechanism of supervision and restriction.

关键词：司法程序法制建设进程社会司法管辖权法律手段组成要素法律程序

Lack of fitness cost and inheritance of resistance to abamectin based on the establishment of a near-isogenic strain of Tetranychus urticae

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Journal of Integrative Agriculture 2023年第6期22卷 1809-1819页

作者： ZHANG yan TIAN Tian ZHANG kun ZHANG You-jun WU Qing-jun XIE Wen GUO Zhao-jiang WANG shao-li State Key Laboratory of Vegetable Biobreeding Institute of Vegetables and FlowersChinese Academy of Agricultural SciencesBeijing 100081P.R.China College of Agriculture Yangtze UniversityJingzhou 434025P.R.China Sanya Nanfan Research Institute Hainan UniversitySanya 572024P.R.China

Many populations of the two-spotted spider mite, Tetranychus urticae Koch, have developed high levels of resistance to the pesticide abamectin in China and other countries. This study developed a near-isogenic line to understand better the inheritance, cross-resistance, and fitness costs associated with abamectin resistance in the field population of T. urticae in China. We introduced the trait that confers extremely high abamectin resistance in a field-collected population of T. urticae into a susceptible laboratory strain(IPP-SS) to generate an abamectin-resistant near-isogenic line(NIL-Aba).This process was carried out through multiple backcrossing to IPP-SS and via parthenogenesis and abamectin screening. Compared with IPP-SS, the NIL-Aba strain had a 25 147-fold resistance to abamectin and a high level of cross-resistance to bifenthrin(288.17-fold), an intermediate level to emamectin benzoate(42.57-fold), and low levels to bifenazate, chlorfenapyr, cyflumetofen, cyenopyrafen, and cyetpyrafen with resistance ranging from 3.18-to *** it had no cross-resistance to profenofos. The resistance to abamectin in NIL-Aba was autosomal, incompletely dominant, and polygenic. Based on two sex life table parameters, no fitness cost was found in NIL-Aba. Establishing the NIL-Aba strain provides a reliable basis for an in-depth study of abamectin resistance in T. urticae. New information on toxicological characteristics and fitness cost should facilitate the management of abamectin resistance in field populations of T. urticae.

关键词： two-spotted spider mite abamectin resistance near-isogenic strain inheritance pattern fitness cost

Landslide integrated characteristics and susceptibility assessment in Rongxian county of Guangxi,China

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Journal of Mountain Science 2019年第3期16卷 657-676页

作者： LIAO Li-ping ZHU Ying-yan ZHAO yan-lin WEN Hai-tao yanG Yun-chuan CHEN Li-hua MA shao-kun XU Ying-zi College of Civil Engineering and Architecture Guangxi University Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education Guangxi University Guangxi Key Laboratory of Disaster Prevention and Engineering Safety Guangxi University Key Laboratory of Mountain Hazards and Surface Processes Institute of Mountain Hazards and EnvironmentChinese Academy of Sciences Guangxi Zhuang Autonomous Region Geological Environmental Monitoring Station

Landslides distribute extensively in Rongxian county, the southeast of Guangxi province, China and pose great threats to this county. At present, hazard management strategy is facing an unprecedented challenge due to lack of a landslide susceptibility map. Therefore, the purpose of this paper was to construct a landslide susceptibility map by adopting three widely used models based on an integrated understanding of landslide’s *** models include a semi-quantitative method(SQM), information value model(IVM) and logistical regression model(LRM).The primary results show that(1) the county is classified into four susceptive regions, named as very low, low, moderate and high, which covered an area of 13.43%, 32.40%, 31.19% and 22.99% in SQM, 0.86%, 26.82%, 44.11%, and 28.21% in IVM, 9.88%, 17.73%, 46.36% and 26.03% in LRM;(2) landslides are likely to occur within the areas characterized by following obvious aspects: high intensity of human activities, slope angles of 25°～35°, the thickness of weathered soil is larger than 15 m; the lithology is granite, shale and mud rock;(3) the area under the curve of SQM, IVM and LRM is 0.7151, 0.7688 and 0.7362 respectively, and the corresponding success rate is 71.51%, 76.88% and 73.62%. It is concluded that these three models are acceptable because they have an effective capability of susceptibility assessment and can achieve an expected accuracy. In addition, the susceptibility outcome obtained from IVM provides a slightly higher quality than that from SQM, LRM.

关键词： Landslide characteristic Susceptibility zonation Prevention regionalization Rongxian county

Robust adaptive compensation control for unmanned autonomous helicopter with input saturation and actuator faults

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Chinese Journal of Aeronautics 2019年第10期32卷 2299-2310页

作者： kun yan Mou CHEN Qingxian WU Ronggang ZHU College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Luoyang Institute of Electro-Optical Equipment of AVIC Luoyang 471000China

This paper studies a robust adaptive compensation Fault Tolerant Control(FTC)for the medium-scale Unmanned Autonomous Helicopter(UAH)in the presence of external disturbances,actuator faults and input *** improve the disturbance rejection capacity of the UAH system in actuator healthy case,an adaptive control method is adopted to cope with the external disturbances and a nominal controller is proposed to stabilize the ***,compensation control inputs are designed to reduce the negative effects derived from actuator faults and input *** on the backstepping control and inner-outer loop control technologies,a robust adaptive FTC scheme is developed to guarantee the tracking errors *** the presented FTC controller,the uniform ultimate boundedness of all closed-loop signals is ensured via Lyapunov stability *** results demonstrate the effectiveness of the proposed control algorithm.

关键词： Compensation control Fault tolerant control Input saturation Tracking control Unmanned autonomous helicopter

Experimental and numerical simulation of bird-strike performance of lattice-material-infilled curved plate

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Chinese Journal of Aeronautics 2021年第8期34卷 245-257页

作者： Jun yan Chenguang ZHANG Sixu HUO Xianghai CHAI Zhihui LIU kun yan State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsDalian University of TechnologyDalian 116024China Ningbo Institute of Dalian University of Technology Ningbo 315016China Department of Discipline Engineering AVIC Commercial Aircraft Engine Co.LTDShanghai 200241China Shanghai Engineering Research Center of Civil Aero Engine Shanghai 200241China School of Chemical Engineering Dalian University of TechnologyDalianLiaoning 116024China

The anti-bird-strike performance of a lattice-material-infilled curved plate is investigated *** automatically filling the curved structure by classical lattice material filling methods will cause a large number of manufacturing defects,a space-dependent lattice material filling method for the curved plate is firstly proposed in this paper Next,using a face-centered cubic lattice,a lattice-material-infilled test piece with a hollow ratio of 40.8%is *** test pieces are manufactured via additive manufacturing using titanium *** bird-strike experimental tests,the test pieces are crashed against gelatin birds at an impact velocity of 200 m/*** strain gauges are used to record the crash history and the results are ***,a numerical analysis to simulate the bird-strike experiment is *** results from the experimental tests and numerical simulation agree *** work shows that the lattice-material-infilled curved plate yields promising bird-strike ***,lattice-infilled materials are feasible for protecting aerospace components against bird-strike as well as for reducing the component weight.

关键词： Bird-strike test Face-centered cubic lattice Infilled curved plate Lattice material Numerical simulation

Determination of isothermal sections of the Co-Nb-Ni and Ni-Mo-Re ternary systems

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Rare Metals 2008年第1期27卷 83-88页

作者： FENG yan WANG Richu YU kun WEN Danhua Department of Materials Science and Engineering Central South University Changsha 410083 China

The isothermal sections of the Co-Nb-Ni ternary system at 1373 K and the Ni-Mo-Re ternary system at 1473 K were determined by means of diffusion triple and electron probe microanalysis（EPMA）.The results indicate that there are three three-phase regions found in the Co-Nb-Ni ternary system at 1373 K：（Ni,Co）＋ NbCo3 ＋ Ni3Nb,NbCo3 ＋ NbCo2 ＋ Ni3Nb,and NbCo2 ＋ μ ＋ Ni3Nb;and four three-phase regions found in the Ni-Mo-Re ternary system at 1473 K：Re ＋ Ni ＋ χ,Ni ＋ NiMo ＋ σ,σ ＋ χ ＋ Ni,and σ ＋ Mo ＋ *** ternary compound is observed in the two isothermal *** isothermal sections are contrasted with the previous study.

关键词： Co-Nb-Ni ternary system Ni-Mo-Re ternary system diffusion triple isothermal section