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Chinese Physics Letters 2018年第1期35卷 72-75页

作者： Yue-Qin Wang yin liu Ming-Xu Zhang Fan-Fei Min School of Material Science and Engineering Anhui University of Science and TechnologyHuanian 232001 School of Mechanics and optoelectronic Physics Anhui University of Science and TechnologyHuainan 232001

First-principles calculations are performed on the influence of transition metal(TM=Cr,Mn,Fe,Co)as codopants on the electronic structure and visible-light absorption of Zn-doped Sr TiO_(3).The calculated results show that(Zn,Mn)-codoped Sr TiO_(3) requires the smallest formation energy in four codoping *** structures of the codoped systems display obvious lattice distortion,inducing a phase transition from cubic to rhombohedral after *** impurity Cr,Mn and Co 3d states appear below the bottom of conduction band and some Fe 3d states are located above the top of valence band,which leads to a significant narrowing of band gap after transition metal *** enhancement of visible-light absorption are observed in transition metals(TM=Cr,Mn,Fe,Co)and Zn codoped Sr TiO_(3) *** prediction calculations suggested that the(Zn,Mn)-and(Zn,Co)-codoped SrTiO_(3) could be the desirable visible-light photocatalysts.

关键词： Transition metals

Electrochemical properties of LiNi_(0.5)Mn_(1.3)Ti_(0.2)O_4/Li_4Ti_5O_(12)cells

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International Journal of Minerals,Metallurgy and Materials 2012年第5期19卷 457-460页

作者： Guo-qiang liu Xi Wang Ya-jie Gao Lei Wen Guang-yin liu Jian-jie Zheng Peng Cen ying Li School of Materials and Metallurgy Northeastern University Shenyang 110004 China Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

Spinel compounds LiNi0.5Mn1.3Ti0.2O4（LNMTO） and Li4Ti5O12 （LTO） were synthesized by different methods. The particle sizes of LNMTO and LTO are 0.5-2 and 0.5-0.8 μm, respectively. The LNMTO/LTO cell exhibits better electrochemical properties at both a low current rate of 0.2C and a high current rate of 1C. When the specific capacity was determined based on the mass of the LNMTO cathode, the LNMTO/LTO cell delivered 137 mA.h.g-1 at 0.2C and 118.2 mA-h-g-l at 1C, and the corresponding capacity retentions after 30 cycles are 88.5% and 92.4%, respectively.

关键词： lithium batteries titanium compounds nickel compounds manganese compounds oxides electrochemical properties

Parasitoid wasps as effective biological control agents

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Journal of Integrative Agriculture 2019年第4期18卷 705-715页

作者： WANG Zhi-zhi liu yin-quan SHI Min HUANG Jian-hua CHEN Xue-xin Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects Zhejiang University State Key Lab of Rice Biology Zhejiang University Institute of Insect Sciences Zhejiang University

Biological control(biocontrol) is a safe, sustainable approach that takes advantage of natural enemies such as predators, parasitic insects or pathogens to manage pests in agroecosystems. Parasitoid wasps, a very large evolutionary group of hymenopteran insects, are well-known biological control agents for arthropod pests in agricultural and forest ecosystems. Here, we summarize the recent progress on the application of parasitoid wasps in biocontrol in China for the last five years. These include species diversity of parasitoid wasps, identification of dominant parasitoid wasps associated with insect pests and biocontrol practices(three types of biological control, i.e., classical, augmentative and conservation biological control) in several Chinese agroecosystems. We then treat different mass-rearing and release technologies and the commercialization of several parasitoid wasp species. We also summarize other work that may have a potential use in biocontrol, including the effect of plant volatiles on parasitoids and recent advance in the molecular mechanisms underlying the host regulation by parasitoid wasps. Future research area and applied perspectives are also discussed, noting that advances in biocontrol technologies in Chinese agriculture informs research at the global level.

关键词： parasitoid wasp predator biological control/biocontrol biological control/biocontrol agent cereal crop vegetable crop mass-rearing field release plant volatile parasitoid-host interaction

Stability control of gate groups in deep wells

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Mining Science and Technology 2009年第2期19卷 155-160页

作者： GUO Zhi-biao GUO Ping-ye HUANG Mao-hong liu yin-gen School of Geotechnical Engineering China University of Mining ＆ Technology Beijing 100083 China Xuzhou Mine Group Company Xuzhou Jiangsu 221167 China

In order to study stability control methods for a deep gate group under complex stresses,we conducted field investigations and analyses of reasons for damage in the Xuzhou mining *** reasons are proposed:deep high stress,improper roadway layout and support *** stability control countermeasures of the gate group consist of an intensive design technology and responding bolt-mesh-anchor truss support *** research method has been applied at the -1000 m level gate group in Qishan Coal *** countermeasures have been tested by field monitoring.

关键词： deep gate group stability intensive design bolt-mesh-anchor truss support

Assessment of the Mechanical Properties of Carbon-Fiber Heating Cables in Snow and Ice Melting Applications

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Fluid Dynamics & Materials Processing 2023年第9期19卷 2267-2288页

作者： Zhiyong Yang Jiacheng Zhang Henglin Xiao Zhi Chen Tian Bao yin liu School of Civil Engineering and Environment Hubei University of TechnologyWuhan430068China Xiangyang Industrial Institute of Hubei University of Technology Xiangyang441100China

The use of carbon-ﬁber heating cables(CFHC)to achieve effective melting of snow and ice deposited on roads is a method used *** this study,tensile and compressive tests have been conducted to analyze the mechan-ical properties of the CFHC and assess whether the maximum tensile and compressive strengths can meet the pavement design speciﬁ*** order to study the aging produced by multiple cycles of heating and cooling,in particular,the CFHC was repeatedly heated in a cold chamber with an ambient temperature ranging between-20℃ and+40℃.Moreover,to evaluate how the strength of the pavement is affected by its presence,the CFHC was embedded at different depths and concrete blocks with different curing ages were subjected to relevant com-pression and splitting tensile *** simulations based on the ANSYS software have also been performed and compared with the outcomes of the static loading *** results show that the CFHC embedded in the concrete does not affect the compressive splitting tensile strengths of the ***,the CFHC meets the conditions required for continued use in road ice melting applications.

关键词： Carbon fiber cable snow and ice melting concrete pavement compressive strength splitting tensile strength

Impact of 4DVAR Assimilation of AIRS Total Column Ozone Observations on the Simulation of Hurricane Earl

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Journal of Meteorological Research 2015年第2期29卷 257-271页

作者：刘寅邹晓蕾 Center for Data Assimilation Research and Applications Nanjing University of Information Science & Technology Key Laboratory of Meteorological Disaster of Ministry of Education Nanjing University of Information Science & Technology Earth System Science Interdisciplinary Center University of MarylandMD 20740 USA

The Atmospheric Infrared Sounder（AIRS） provides twice-daily global observations of brightness temperature, which can be used to retrieve the total column ozone with high spatial and temporal *** order to apply the AIRS ozone data to numerical prediction of tropical cyclones, a four-dimensional variational（4DVAR） assimilation scheme on selected model levels is adopted and implemented in the mesoscale non-hydrostatic model MM5. Based on the correlation between total column ozone and potential vorticity（PV）, the observation operator of each level is established and five levels with highest correlation coefficients are selected for the 4DVAR assimilation of the AIRS total column ozone observations. The results from the numerical experiments using the proposed assimilation scheme for Hurricane Earl show that the ozone data assimilation affects the PV distributions with more mesoscale information at high levels first and then influences those at middle and low levels through the so-called asymmetric penetration of PV *** the AIRS ozone data being assimilated, the warm core of Hurricane Earl is intensified, resulting in the improvement of other fields near the hurricane center. The track prediction is improved mainly due to adjustment of the steering flows in the assimilation experiment.

关键词： numerical prediction of tropical cyclones AIRS total column ozone data assimilation

Strategic Thinking on Developing Petroleum Substitutes in China

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Petroleum Science 2006年第4期3卷 46-51页

作者： yin Jianping liu Danfeng School of Business Administration China University of Petroleum Beijing 102249 China

The continual growth of Chinese economy indicates that the oil demand in China will maintain a strongly rising tendency in the future. With increasing oil consumption, the contradiction between supply and demand will become more and more serious, which can be resolved by developing petroleum substitutes. This paper analyzes different influence factors, displays the development trend and probes into the strategy in developing petroleum substitutes in China.

关键词： China petroleum substitute development trend development strategy

Ionic liquid-induced ultrathin and uniform N-doped carbon-wrapped T-Nb_(2)O_(5) microsphere anode for high-performance lithium-ion battery

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Rare Metals 2021年第11期40卷 3205-3214页

作者： Rui-Xue Sun Yang Yue Xin-Feng Cheng Ke Zhang Su-ying Jin Guang-yin liu Yu-Xin Fan Yan Bao Xiao-Di liu College of Chemistry and Pharmaceutical Engineering Engineering Technology Research Center of Henan Province for Solar CatalysisNanyang Normal UniversityNanyang 473061China College of Science Henan Agricultural UniversityZhengzhou 450001China

Orthorhombic-phase Nb_(2)O_(5)(T-Nb_(2)O_(5)) has been widely investigated as an intercalation anode material for Li-ion batteries due to the larger interplanar lattice spacing and high ***,its applications are limited by the intrinsic low electric ***,an ultrathin N-doped carbon-coating layer was constructed on porous T-Nb_(2)O_(5) microspheres uniformly via a convenient thermal treatment method with ionic liquid as a carbon *** synthesized T-Nb_(2)O_(5)@N-C exhibits significantly enhanced rate capability(155.5 mAh·g^(-1) at 20 C) than initial T-Nb_(2)O_(5)(110.2 mAh·g^(-1) at 20C).Besides,T-Nb_(2)O_(5)@N-C shows ultralong cycle life,with only a 0.02% decrease in the capacity per cycle at a high current density of 10 *** corresponding electrochemical tests show that the preferable rate capability of T-Nb_(2)O_(5)@N-C electrode is attributed to the increased electronic conductivity and pseudocapacitance contribution induced by ultrathin surface N-doped carbon *** the other hand,the mesoporous structure of T-Nb_(2)O_(5)@N-C ensures fast Li+ diffusion dynamics and electrolyte ***,T-Nb_(2)O_(5)@N-C also performs well in a LiNi_(0.5)Mn_(0.3)Co_(0.2)O_(4) llT-Nb_(2)O_(5)@N-C full *** work provides a facile method to construct integrated anode materials for potential applications in lithium-ion batteries.

关键词： Ionic liquid Ultrathin N-doped carbon T-Nb_(2)O_(5) Lithium-ion battery Full cell

Effect of depositing PCBM on perovskite-based metal–oxide–semiconductor field effect transistors

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Chinese Physics B 2018年第4期27卷 391-395页

作者： Su-Zhen Luan Yu-Cheng Wang yin-Tao liu Ren-Xu Jia School of Electronic Engineering Xidian University Xi＇an 710071 China School of Microelectronics Xidian University Xi＇ an 710071 China

In this manuscript,the perovskite-based metal–oxide–semiconductor field effect transistors（MOSFETs） with phenylC61-butyric acid methylester（PCBM） layers are *** MOSFETs are fabricated on perovskites,and characterized by photoluminescence spectra（PL）,x-ray diffraction（XRD）,and x-ray photoelectron spectroscopy（XPS）.With PCBM layers,the current–voltage hysteresis phenomenon is effetely inhibited,and both the transfer and output current values *** band energy diagrams are proposed,which indicate that the electrons are transferred into the PCBM layer,resulting in the increase of *** electron mobility and hole mobility are extracted from the transfer curves,which are about one order of magnitude as large as those of PCBM deposited,which is the reason why the electrons are transferred into the PCBM layer and the holes are still in the perovskites,and the effects of ionized impurity scattering on carrier transport become smaller.

关键词： metal-oxide-semiconductor field effect transistors photoelectric characteristics perovskite

Binary Co–Ni oxide nanoparticle-loaded hierarchical graphitic porous carbon for high-performance supercapacitors

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Journal of Materials Science & Technology 2020年第2期37卷 135-142页

作者： yin liu Cuili Xiang Hailiang Chu Shujun Qiu Jennifer McLeod Zhe She Fen Xu Lixian Sun Yongjin Zou Guangxi Key Laboratory of Information Materials Guilin University of Electronic TechnologyGuilin541004China Department of Chemistry Queen’s UniversityK7L 3N6Canada

Heteroatom doped graphitic porous carbon is highly desirable for electrochemical applications because of its excellent conductivity and high surface *** this study,highly uniform Co-Ni oxide nanoparticleloaded B,N-doped hierarchical graphitic porous carbon was prepared through a dual pyrolysis *** dispersed chitosan hydrogel was first used as a precursor to fabricate the porous carbon(GCS–C)at 700℃.Co and Ni oxide nanoparticles were further anchored on the porous carbon through chemical reduction and calcined at high *** structure of the porous carbon was optimized by the introduction of graphene to the chitosan *** graphitic degree of the porous carbon was significantly improved by the Co and Ni *** heteroatom B and N were found to be well doped in the *** features enable the composite to be an excellent candidate for supercapacitor *** composite demonstrates a high capacitance(1266.7 F g-1 at 1 A g-1)and excellent stability.

关键词： Graphitic carbon Graphene Metal oxides Supercapacitor Porous carbon