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Electrochemical performance of Li-rich cathode material,0.3Li_2MnO_3-0.7LiMn_(1/3)Ni_(1/3)Co_(1/3)O_2 microspheres with F-doping

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Rare Metals 2019年第3期38卷 189-198页

作者： Ting Liu Shi-Xi Zhao lu-lu gou Xia Wu Ce-Wen Nan Graduate School at Shenzhen Tsinghua University School of Materials Science and Engineering Tsinghua University

Layered F-doped cathode materials 0.3 Li_2 MnO_3-0.7 LiMn_(1/3)Ni_(1/3)CO_(1/3))O_(2-x)F_x(x = 0, 0.01, 0.02, 0.03, 0.04,0.05) microspheres made up of nanosized primary grains were prepared through co-precipitation method. The sample of x = 0.02 demonstrates a large discharge capacity of226 mAh g^(-1) over 100 cycles at 0.1 C and excellent rate performance with discharge capacity of 96 mAh g-1 at 5.0 C and room temperature. Particularly, this material shows much enhanced electrochemical performances even at high temperature of 55 ℃. It delivers a quite high discharge capacity of 233.7 mAh·g^(-1) at 1.0 C with capacity retention as high as 97.9% after 100 cycles. The results demonstrate that the fluorine incorporation stabilizes the cathode structure and maintains stable interfacial resistances.

关键词： Lithium-ion battery Cathode materials 0.3Li2MnO3-0.7LiMn1/3Ni1/3Co1/3O2-xFx F-doped

Strong electron correlation-induced Mott-insulating electrides of Ae_(5)X_(3)(Ae=Ca,Sr,and Ba;X=As and Sb)

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Matter and Radiation at Extremes 2024年第3期9卷 74-82页

作者： Ya Xu lu Zheng Yunkun Zhang Zhuangfei Zhang QianQian Wang Yuewen Zhang Liangchao Chen Chao Fang Biao Wan Huiyang gou Key Laboratory of Material Physics of Ministry of Education School of Physics and Laboratory of Zhongyuan LightZhengzhou UniversityZhengzhou 450052China School of Mechanical and Equipment Engineering Hebei University of EngineeringHandan 056038China Center for High Pressure Science and Technology Advanced Research Beijing 100094China

The presence of interstitial electrons in electrides endows them with interesting attributes,such as low work function,high carrier concentration,and unique magnetic *** knowledge and understanding of electrides are thus of both scientific and technological ***,we employ first-principles calculations to investigate Mott-insulating Ae_(5)X_(3)(Ae=Ca,Sr,and Ba;X=As and Sb)electrides with Mn_(5)Si_(3)-type structure,in which half-filled interstitial electrons serve as ions and are *** Mott-insulating property is induced by strong electron correlation between the nearest interstitial electrons,resulting in spin splitting and a separation between occupied and unoccupied *** half-filled antiferromagnetic configuration and localization of the interstitial electrons are critical for the Mott-insulating properties of these *** with that in intermetallic electrides,the orbital hybridization between the half-filled interstitial electrons and the surrounding atoms is weak,leading to highly localized magnetic centers and pronounced correlation ***,the Mott-insulating electrides Ae_(5)X_(3)have very large indirect bandgaps(0.30 eV).In addition,high pressure is found to strengthen the strong correlation effects and enlarge the *** present results provide a deeper understanding of the formation mechanism of Mott-insulating electrides and provide guidance for the search for new strongly correlated electrides.

关键词： intermetallic filled occupied

Polymorphism of Kdo-Based Glycolipids:The Elaborately Determined Stable and Dynamic Bicelles

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CCS Chemistry 2022年第7期4卷 2228-2238页

作者： Yingle Feng Long Li Qiqige Du lu gou Lei Zhang Yonghai Chai Ran Zhang Tongfei Shi Guosong Chen The State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200433 Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’anShaanxi 710119 MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of ScienceXi’an Jiaotong UniversityXi’an 710049 Changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchun 130022 Multiscale Research Institute of Complex Systems Fudan UniversityShanghai 200433

Understanding how the diversity of glycolipids,including how their chemical structures and composition affect their biological functions,is a remarkable fundamental *** this work,we employed a rare monosaccharide,3-deoxy-Dmanno-2-octulosonic acid(Kdo)to build a simple and biomimetic model to understand the diversity of glycolipids from the viewpoint of supramolecular *** was chosen not only because its unusual 8-carbon acidic carbohydrate backbone is very different from common hexoses,but also because of its key structural role in lipopolysaccharides and prevalence in bacteria,plant life,and *** was found that although both of the two Kdo-lipids S-Kdo and Kdo-S derived from the same carbohydrate backbone and gave bicelles as their self-assembled morphology,experimental results revealed that the self-assembly showed pathway *** is the thermodynamic product of S-Kdo,while for Kdo-S,the bicelle is only a kinetically trapped state,which finally transforms to a *** simulation clearly revealed the different packing of Kdo-lipids in the bicelles with different contribution from hydrogen bonds and electrostatic interactions.

关键词： glycolipid Kdo self-assembly bicelles

Method for the real-time detection of tomato ripeness using a phenotype robot and RP-YolactEdge

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International Journal of Agricultural and Biological Engineering 2024年第2期17卷 200-210页

作者： Yuanqiao Wang Wenbo gou Chuanyu Wang Jiangchuan Fan Weiliang Wen Xianju lu Xinyu Guo Chunjiang Zhao College of Information Engineering Northwest A&F UniversityYangling 712100ShaanxiChina China National Engineering Research Center for Information Technology in Agriculture(NERCITA) Beijing 100097China Beijing Key Laboratory of Digital Plant Beijing Research Center for Information Technology in AgricultureBeijing 100097China Beijing PAIDE Science and Technology Development Co. Ltd.Beijing 100097China

In order to address the challenge of non-destructive detection of tomato fruit ripeness in controlled environments,this study proposed a real-time instance segmentation method based on the edge *** method combined the principles of phenotype robots and machine vision based on deep learning.A compact and remotely controllable phenotype detection robot was employed to acquire precise data on tomato *** video data were then processed by using an efficient backbone and the FeatFlowNet structure for feature extraction and analysis of key-frame to non-key-frame mapping from video *** enhance the diversity of training datasets and the generalization of the model,an innovative approach was chosen by using random enhancement ***,the PolyLoss optimization technique was applied to further improve the accuracy of the ripeness multi-class detection *** validation,the method of this study achieved real-time processing speeds of 90.1 fps(RTX 3070Ti)and 65.5 fps(RTX 2060 S),with an average detection accuracy of 97%compared to manually measured *** is more accurate and efficient than other instance segmentation models according to actual testing in a ***,the results of this research can be deployed in edge devices and provide technical support for unmanned greenhouse monitoring devices or fruit-picking robots in facility environments.

关键词： instance segmentation phenotype robot tomato greenhouse-based plant phenotyping ripeness detection

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BUDGET HOTELS

China International Business 2007年第3期 31-38页

作者： lu JIAMIN gou FU MAO

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红枫湖控制发电水位研究

海河水利 2023年第6期 57-60页

作者：苟露沈军贵州省水利水电勘测设计研究院有限公司贵州贵阳550002

红枫湖是长江流域乌江一级支流猫跳河流域梯级电站的龙头水库,属大(2)型水库,主要任务是为城市居民生活和工业供水、农业灌溉、发电,兼顾环保型旅游。红枫湖是贵阳市的重要饮用水水源地,随着红枫湖城市供水量逐渐增大,为优先满足市民用... 详细信息

红枫湖是长江流域乌江一级支流猫跳河流域梯级电站的龙头水库,属大(2)型水库,主要任务是为城市居民生活和工业供水、农业灌溉、发电,兼顾环保型旅游。红枫湖是贵阳市的重要饮用水水源地,随着红枫湖城市供水量逐渐增大,为优先满足市民用水需求,需要协调好城市供水和发电用水之间的关系。通过现状调查、兴利调算、水能指标复核等,综合考虑红枫湖的供水、防洪、发电之间的关系,拟定红枫湖的最低控制发电水位线,以保证贵阳市的饮用水安全。按发电控制水位调度,受红枫湖周边城市取水和工矿企业取水影响,红枫水电站多年平均年发电量将减少2166万kW·h;受红枫湖、百花湖周边城市取水和工矿企业取水影响,猫跳河梯级电站多年平均年发电量合计减少2.91亿kW·h,按红枫电厂上网电价0.2761元/kW·h计算,则梯级电站相应赔偿电量损失估算费用8035万元/a。

关键词：红枫湖猫跳河流域控制发电水位发电量

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都匀市城区防洪体系分析

水利科学与寒区工程 2023年第7期6卷 82-85页

作者：苟露沈军贵州省水利水电勘测设计研究院有限公司贵州贵阳550002

都匀市是贵州省黔南布依族苗族自治州州府,为带状谷坝城市,城区沿着剑江河干流两岸而建,剑江河为长江流域沅江上源清水江的上游干流都匀市区河段。茶园水库、绿茵湖水库、东湖水库是都匀市城区防洪体系中的重点工程,为并联水库群,通过... 详细信息

都匀市是贵州省黔南布依族苗族自治州州府,为带状谷坝城市,城区沿着剑江河干流两岸而建,剑江河为长江流域沅江上源清水江的上游干流都匀市区河段。茶园水库、绿茵湖水库、东湖水库是都匀市城区防洪体系中的重点工程,为并联水库群,通过三库的联合补偿调度,并采用库外区间同频率洪水过程与上游茶园水库、绿茵湖水库、东湖水库相应洪水调洪下泄洪水过程叠加的洪水地区组合方法,各水库的相应洪水过程按水库坝址以上流域面积占比来分摊。计算得到文峰塔水文站控制断面P=2%天然洪水洪峰流量为1936 m^(3)/s,受上游水库洪水调节影响后P=2%的洪水洪峰流量为1277 m^(3)/s,削峰比例为34.0%,主要是茶园水库、绿茵湖水库的错峰调节以及东湖水库的控泄影响。通过茶园水库、绿茵湖水库、东湖水库的三库联合补偿调度,并结合都匀市城区河道整治工程,可使得都匀市城区的防洪标准达到50年一遇。

关键词：都匀市茶园水库绿茵湖水库东湖水库防洪

Correlation between Combined Urinary Metal Exposure and Grip Strength under Three Statistical Models:A Cross-sectional Study in Rural Guangxi

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Biomedical and Environmental Sciences 2024年第1期37卷 3-18页

作者： LIANG Yu Jian RONG Jia Hui WANG Xue Xiu CAI Jian Sheng QIN Li Dong LIU Qiu Mei TANG Xu MO Xiao Ting WEI Yan Fei LIN Yin Xia HUANG Shen Xiang luO Ting Yu gou Ruo Yu CAO Jie Jing HUANG Chu Wu lu Yu Fu QIN Jian ZHANG Zhi Yong Department of Environmental and Occupational Health School of Public HealthGuangxi Medical UniversityNanning 530021GuangxiChina Key Laboratory of Tumor Immunology and Microenvironmental Regulation Guilin Medical UniversityGuilin 541199GuangxiChina Department of Environmental Health and Occupational Medicine School of Public HealthGuilin Medical UniversityGuilin 541199GuangxiChina Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases Guangxi Medical UniversityNanning 530021GuangxiChina Guangxi Key Laboratory of Environment and Health Research Guangxi Medical UniversityNanning 530021GuangxiChina Key Laboratory of Longevity and Aging-related Diseases of Chinese Ministry of Education Guangxi Medical UniversityNanning 530021GuangxiChina Guangxi Health Commission Key Laboratory of Entire Lifecycle Health and Care Guilin Medical UniversityGuilin 541199GuangxiChina

Objective This study aimed to investigate the potential relationship between urinary metals copper(Cu),arsenic(As),strontium(Sr),barium(Ba),iron(Fe),lead(Pb)and manganese(Mn)and grip *** We used linear regression models,quantile g-computation and Bayesian kernel machine regression(BKMR)to assess the relationship between metals and grip *** In the multimetal linear regression,Cu(β=−2.119),As(β=−1.318),Sr(β=−2.480),Ba(β=0.781),Fe(β=1.130)and Mn(β=−0.404)were significantly correlated with grip strength(Plusion In summary,this study suggests that combined exposure to metal mixtures is negatively associated with grip ***,Sr and As were negatively correlated with grip strength levels,and there were potential interactions between As and Mn and between Cu and Mn.

关键词： Urinary metals Handgrip strength Quantile g-computation Bayesian kernel machine regression

Heterogeneous oxidization of graphene nanosheets damages membrane

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Science China(Physics,Mechanics & Astronomy) 2019年第6期62卷 45-54页

作者： QianChun Wang XiaoBo Zhai Michael Crowe lu gou YinFeng Li DeChang Li Lei Zhang JiaJie Diao BaoHua Ji Biomechanics and Biomaterials Laboratory Department of Applied Mechanics Beijing Institute of Technology College of Science Xi'an University of Science and Technology Department of Cancer Biology University of Cincinnati College of Medicine MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of Science Xi'an Jiaotong University Department of Engineering Mechanics School of Naval Architecture Ocean and Civil Engineering and Key Laboratory of HydrodynamicsShanghai Jiao Tong University Institute of Applied Mechanics Department of Engineering Mechanics Zhejiang University

Graphene-based materials exhibit unique properties that have been sought to utilize for various potential applications. Many studies suggest that graphene-based materials can be cytotoxic, which may be attributed to destructive effects on cell ***, there still are conflicting results regarding interactions between graphene-based materials and lipid membranes. Here,through cryo-electron microscopy(Cryo-EM) and dye-leakage experiments along with in silico methods, we found that graphene oxide nanosheets induce significant membrane damage, while the effect of pristine graphene is negligible. We revealed the importance of heterogeneous oxidization of graphene-based nanosheets in damaging vesicle membranes. Moreover, that not only the oxidization degree but also the oxidization loci and membrane tension play important roles in the cytotoxicity of the graphene-based nanosheets.

关键词： graphene graphene oxide heterogeneous oxidization cytotoxicity lipid membrane