维普中文期刊产品整合服务
14篇 您的检索式:作者名="Yanli Niu"
    题名 作者 年代 出处 被引量
1The Detecting System of Image Forgeries with Noise Features and EXIF Information显示文摘Recently, the digital image blind forensics technology has received an increasing attention in academic community. This paper aims at developing a new identification approach based on the statistical noise and exchangeable image file format(EXIF) information of image for images authentication. In particular, the authors can identify whether the current image has been modified or not by utilizing the relevance between noise and EXIF parameters and comparing the real values with the estimated values of the EXIF parameters. Experimental results validate the proposed method. That is, the detecting system can identify the doctored image effectively.SUN Xiaoting LI Yezhou NIU Shaozhang HUANG Yanli 2015Journal of Systems Engineering and Electronics2015,26,5:4
2Engineering Two-Phase Bifunctional Oxygen Electrocatalysts with Tunable and Synergetic Components for Flexible Zn-Air Batteries显示文摘Metal-air batteries,like Zn-air batteries(ZABs)are usually suffered from low energy conversion efficiency and poor cyclability caused by the sluggish OER and ORR at the air cathode.Herein,a novel bimetallic Co/CoFe nanomaterial supported on nanoflower-like N-doped graphitic carbon(NC)was prepared through a strategy of coordination construction-cation exchange-pyrolysis and used as a highly efficient bifunctional oxygen electrocatalyst.Experimental characterizations and density functional theory calculations reveal the formation of Co/CoFe heterostructure and synergistic effect between metal layer and NC support,leading to improved electric conductivity,accelerated reaction kinetics,and optimized adsorption energy for intermediates of ORR and OER.The Co/CoFe@NC exhibits high bifunctional activities with a remarkably small potential gap of 0.70 V between the half-wave potential(E_(1/2))of ORR and the potential at 10 mA cm^(-2)(E_(j=10))of OER.The aqueous ZAB constructed using this air electrode exhibits a slight voltage loss of only 60 mV after 550-cycle test(360 h,15 days).A sodium polyacrylate(PANa)-based hydrogel electrolyte was synthesized with strong water-retention capability and high ionic conductivity.The quasi-solid-state ZAB by integrating the Co/CoFe@NC air electrode and PANa hydrogel electrolyte demonstrates excellent mechanical stability and cyclability under different bending states.Yanli Niu Xue Teng Shuaiqi Gong Mingze Xu Shi-Gang Sun Zuofeng Chen 2021Nano-Micro Letters2021,13,8:2
3Engineering iron-group bimetallic nanotubes as efficient bifunctional oxygen electrocatalysts for flexible Zn–air batteries显示文摘Air cathode performance is essential for rechargeable zinc–air batteries(ZABs).In this study,we develop a self-templated synthesis technique for fabricating bimetallic alloys(FeNi_(3)),bimetallic nitrides(FeNi_(3)N)and heterostructured FeNi_(3)/FeNi_(3)N hollow nanotubes.Owing to its structural and compositional advantages,FeNi_(3)/FeNi_(3)N exhibits remarkable bifunctional oxygen electrocatalytic performance with an extremely small potential gap of 0.68​V between the oxygen evolution reaction(OER)and oxygen reduction reaction(ORR).Theoretical calculations reveal reduced Gibbs free energy for the rate-limiting O–O bond formation during OER due to the self-adaptive surface reconfiguration,which induces a synergistic effect between Fe(Ni)OOH developed in situ on the surface and the inner FeNi_(3)/FeNi_(3)N.ZAB fabricated using the FeNi_(3)/FeNi_(3)N catalyst shows high power density,small charge/discharge voltage gap and excellent cycling stability.In addition to its excellent battery performance,the corresponding quasi-solid-state ZAB shows robust flexibility and integrability.The synthesis method is extended to prepare a CoFe/CoFeN oxygen electrocatalyst,demonstrating its applicability to other iron-group elements.Yanli Niu Shuaiqi Gong Xuan Liu Chen Xu Mingze Xu Shi-Gang Sun Zuofeng Chen 2022eScience2022,2,5:2
4Characterization of hippocampal Cajal-Retzius cells during development in a mouse model of Alzheimer's disease(Tg2576)显示文摘Cajal-Retzius cells are reelin-secreting neurons in the marginal zone of the neocortex and hippocampus.The aim of this study was to investigate Cajal-Retzius cells in Alzheimer's disease pathology.Results revealed that the number of Cajal-Retzius cells markedly reduced with age in both wild type and in mice over-expressing the Swedish double mutant form of amyloid precursor protein 695(transgenic(Tg) 2576 mice).Numerous reelin-positive neurons were positive for activated caspase 3 in Tg2576 mice,suggesting that Cajal-Retzius neuronal loss occurred via apoptosis in this Alzheimer's disease model.Compared with wild type,the number of Cajal-Retzius cells was significantly lower in Tg2576 mice.Western blot analysis confirmed that reelin levels were markedly lower in Tg2576 mice than in wild-type mice.The decline in Cajal-Retzius cells in Tg2576 mice was found to occur concomitantly with the onset of Alzheimer's disease amyloid pathology and related behavioral deficits.Overall,these data indicated that Cajal-Retzius cell loss occurred with the onset and development of Alzheimer's disease.Dongming Yu Wenjuan Fan Ping Wu Jiexin Deng Jing Liu Yanli Niu Mingshan Li Jinbo Deng 2014Neural Regeneration Research2014,9,4:1
5Paired formate and H_(2) productions via efficient bifunctional Ni-Mo nitride nanowire electrocatalysts显示文摘Electrocatalytic water splitting provides a potentially sustainable approach for hydrogen production,but is typically restrained by kinetically slow anodic oxygen evolution reaction(OER)which is of lesser value.Here,free-standing,hetero-structured Ni_(3)N-Ni_(0.2)Mo_(0.8)N nanowire arrays are prepared on carbon cloth(CC)electrodes for hydrogen evolution reaction(HER)and glycerol oxidation reaction(GOR)to formate with a remarkably high Faradaic efficiency of 96%.A two-electrode electrolyzer for GOR-assisted hydrogen production operates with a current density of 10 mA cm^(-2)at an applied cell voltage of 1.40 V,220 mV lower than for alkaline water splitting.In-situ Raman measurements identify Ni(Ⅲ)as the active form of the catalyst for GOR rather than Ni(IV)and in-situ Fourier transform infrared(FTIR)spectroscopy measurements reveal pathways for GOR to formate.From density functional theory(DFT)calculations,the Ni_(3)N-Ni_(0.2)Mo_(0.8)N heterostructure is beneficial for optimizing adsorption energies of reagents and intermediates and for promoting HER and GOR activities by charge redistribution across the heterointerface.The same electrode also catalyzes conversion of ethylene glycol from polyethylene terephthalate(PET)plastic hydrolysate into formate.The combined results show that electrolytic H_(2) and formate production from alkaline glycerol and ethylene glycol solutions provide a promising strategy as a cost-effective energy supply.Xuan Liu Zhongying Fang Xue Teng Yanli Niu Shuaiqi Gong Wei Chen Thomas JMeyer Zuofeng Chen 2022Journal of Energy Chemistry2022,31,9:1
6Sol–gel preparation and characterization of uniform core-shell structured LaInO 3 :Sm 3+ /Tb 3+ @SiO 2 phosphors显示文摘Yongchen Shang Piaoping Yang Wenxin Wang Yanli Wang Na Niu Shili Gai Jun Lin 2010Journal of Alloys and Compounds2010,,3:1
7High-capacity Bi_(2)O_(3) anode for 2.4 V neutral aqueous sodium-ion battery-supercapacitor hybrid device through phase conversion mechanism显示文摘Aqueous battery-supercapacitor hybrid devices(BSHs)are of great importance to enrich electrochemical energy storage systems with both high energy and power densities.However,further improvement of BSHs in aqueous electrolytes is greatly hampered by operating voltage and capacity limits.Different from the conventional intercalation/de-intercalation mechanism,Bi_(2)O_(3) implements charge storage by a reversible phase conversion mechanism.Herein,taking Bi_(2)O_(3) electrode with wide potential window(from-1.2 to 1 V vs.saturated calomel electrode)and high capacity as battery-type anode,we propose that the overall performance of aqueous BSHs can be greatly upgraded under neutral condition.By paring with stable layer-structuredδ-MnO_(2) cathode,a sodium-ion Bi_(2)O_(3)//MnO_(2) BSH with an ultrahigh voltage of 2.4 V in neutral sodium sulfate electrolyte is developed for the first time.This hybrid device exhibits high capacity(~215 C g^(-1) at 1 mA cm^(-2)),relatively long lifespan(~77.2%capacity retention after 1500 cycles),remarkable energy density(71.7 Wh kg^(-1)@400.5 W kg^(-1))and power density(3204.3 W kg^(-1)@18.8 Wh kg^(-1)).Electrochemical measurements combining a set of spectroscopic techniques reveal the reversible phase conversion between bismuth oxide and metallic bismuth(Bi_(2)O_(3)?Bi0)through Bi^(2+) transition phase in neutral sodium sulfate solution,which can deliver multielectron transfer up to 6,leading to the high-energy BSHs.Our work sheds light on the feasibility of using Bi_(2)O_(3) electrode under neutral condition to address the issue of narrow voltage and low capacity for aqueous BSHs.Mingze Xu Yanli Niu Xue Teng Shuaiqi Gong Lvlv Ji Zuofeng Chen 2022Journal of Energy Chemistry2022,31,2:1
8The MIEL1-ABI5/MYB30 regulatory module fine tunes abscisic acid signaling during seed germination显示文摘The transcription factor ABSCISIC ACID INSENSITIVE5(ABI5)plays a crucial role in abscisic acid(ABA)signaling during seed germination.However,how ABI5 is regulated during this process is poorly understood.Here,we report that the ubiquitin E3 ligase MIEL1 and its target transcription factor MYB30 modulate ABA responses in Arabidopsis thaliana during seed germination and seedling establishment via the precise regulation of ABI5.MIEL1 interacts with and ubiquitinates ABI5 to facilitate its degradation during germination.The transcription factor MYB30,whose turnover is mediated by MIEL1 during seed germination,also interacts with ABI5 to interfere with its transcriptional activity.MYB30 functions downstream of MIEL1 in the ABA response,and both are epistatic to ABI5 in ABA-mediated inhibition of seed germination and postgerminative growth.ABA treatment induces the degradation of MIEL1 and represses the interaction between MIEL1 and ABI5/MYB30,thus releasing both ABI5 and MYB30.Our results demonstrate that MIEL1 directly mediates the proteasomal degradation of ABI5 and inhibits its activity via the release of its target protein MYB30,thus ensuring precise ABA signaling during seed germination and seedling establishment.Kaili Nie Hongyun Zhao Xiaopei Wang Yanli Niu Huapeng Zhou Yuan Zheng 2022Journal of Integrative Plant Biology2022,64,4:1
9Upcycling PET in parallel with energy-saving H_(2)production via bifunctional nickel-cobalt nitride nanosheets显示文摘We describe here an electro-reforming strategy to upcycle polyethylene terephthalate(PET)waste with simultaneous hydrogen production by a bifunctional nickel-cobalt nitride nanosheets electrocatalyst.PET plastics are digested in alkaline solution giving an electrochemically active monomer ethylene glycol(EG).The introduction of Co in Co-Ni3N/carbon cloth(CC)promotes the redox behavior of Ni2+/Ni3+,which is beneficial for EG oxidation at an ultra-low potential(1.15 V vs.reversible hydrogen electrode(RHE))and breaks through the limitation of high catalytic potentials of simple Ni-based electrocatalysts(1.30 V).In PET hydrolysate with Co-Ni3N/CC couples,an integrated EG oxidation-hydrogen production system achieves a current density of 50 mA·cm^(−2)at a cell voltage of 1.46 V,which is 370 mV lower than the conventional water splitting.The in-situ Raman and Fourier transform infrared(FTIR)spectroscopies and density functional theory(DFT)calculations identify the catalytic mechanism and point to advantages of heterostructure engineering in optimizing adsorption energies and promoting catalytic activities for EG oxidation.Xuan Liu Zhongying Fang Dengke Xiong Shuaiqi Gong Yanli Niu Wei Chen Zuofeng Chen 2023Nano Research2023,16,4:0
10Recent progress of self-supported air electrodes for flexible Zn-air batteries显示文摘Smart wearable devices are regarded to be the next prevailing technology product after smartphones and smart homes,and thus there has recently been rapid development in flexible electronic energy storage devices.Among them,flexible solid-state zinc-air batteries have received widespread attention because of their high energy density,good safety,and stability.Efficient bifunctional oxygen electrocatalysts are the primary consideration in the development of flexible solid-state zinc-air batteries,and self-supported air cathodes are strong candidates because of their advantages including simplified fabrication process,reduced interfacial resistance,accelerated electron transfer,and good flexibility.This review outlines the research progress in the design and construction of nanoarray bifunctional oxygen electrocatalysts.Starting from the configuration and basic principles of zinc-air batteries and the strategies for the design of bifunctional oxygen electrocatalysts,a detailed discussion of self-supported air cathodes on carbon and metal substrates and their uses in flexible zinc-air batteries will follow.Finally,the challenges and opportunities in the development of flexible zinc-air batteries will be discussed.Chen Xu Yanli Niu Vonika Ka-Man Au Shuaiqi Gong Xuan Liu Jianying Wang Deli Wu Zuofeng Chen 2024Journal of Energy Chemistry2024,89,2:0
11N-doped graphitic carbon encapsulating cobalt nanoparticles derived from novel metal–organic frameworks for electrocatalytic oxygen evolution reaction显示文摘Nitrogen-doped carbon catalysts with hierarchical porous structure are promising oxygen evolution reaction(OER)catalysts due to the faster mass transfer and better charge carrying ability.Herein,an exquisite high nitrogen-containing ligand was designed and readily synthesized from the low-cost biomolecule adenine.Accordingly,three new MOFs(TJU-103,TJU-104 and TJU-105)were prepared using the Co(II)or Mn(II)ions as metal nodes.Through rationally controlling pyrolysis condition,in virtue of the high nitrogen content in well-defined periodic structure of the pristine MOFs,TJU-104–900 among the derived MOFs with hierarchical porous structure,i.e.,N-doped graphitic carbon encapsulating homogeneously distributed cobalt nanoparticles,could be conveniently obtained.Thanks to the synergistic effect of the hierarchical structure and well dispersed active components(i.e.,C=O,Co–Nx,graphitic C and N,pyridinic N),it could exhibit an overpotential of 280 mV@10mA/cm^(2)on carbon cloth for OER activity.This work provides the inspiration for fabrication of nitrogen-doped carbon/metal electrocatalysts from cost-effective and abundant biomolecules,which is promising for practical OER application.Yuanmeng Tian Hao Wu Aamir Hanif Yanli Niu Ying Yin Yangyi Gu Zuofeng Chen Qinfen Gu Yun Hau Ng Jin Shang Liangchun Li Mingxian Liu 2023Chinese Chemical Letters2023,34,8:0
12Cross-species recognition of bat coronavirus RsYN04 and cross-reaction of SARS-CoV-2 antibodies against the virus显示文摘Following the outbreak of coronavirus disease 2019(COVID-19),several severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)-related coronaviruses have been discovered.Previous research has identified a novel lineage of SARS-CoV-2-related CoVs in bats,including RsYN04,which recognizes human angiotensin-converting enzyme 2(ACE2)and thus poses a potential threat to humans.Here,we screened the binding of the RsYN04receptor-binding domain(RBD)to ACE2 orthologs from 52animal species and found that the virus showed a narrower ACE2-binding spectrum than SARS-CoV-2.However,the presence of the T484W mutation in the RsYN04 RBD broadened its range.We also evaluated 44 SARS-CoV-2antibodies targeting seven epitope communities in the SARS-CoV-2 RBD,together with serum obtained from COVID-19 convalescents and vaccinees,to determine their cross-reaction against RsYN04.Results showed that no antibodies,except for the RBD-6 and RBD-7 classes,bound to the RsYN04 RBD,indicating substantial immune differences from SARS-CoV-2.Furthermore,the structure of the RsYN04 RBD in complex with cross-reactive antibody S43 in RBD-7 revealed a potently broad epitope for the development of therapeutics and vaccines.Our findings suggest RsYN04 and other viruses belonging to the same clade have the potential to infect several species,including humans,highlighting the necessity for viral surveillance and development of broad anticoronavirus countermeasures.Runchu Zhao Sheng Niu Pu Han Yue Gao Dezhi Liu Chunliang Luo Honghui Liu Bo Liu Yanli Xu Jianxun Qi Zhihai Chen Weifeng Shi Lili Wu George F.Gao Qihui Wang 2023Zoological Research2023,44,6:0
13Room temperature in-situ preparation of hydrazine-linked covalent organic frameworks coated capillaries for separation and determination of polycyclic aromatic hydrocarbons显示文摘Covalent organic frameworks(COFs)have been increasingly used in capillary electrochromatography due to their excellent characteristics.In this work,hydrazine-linked TFPB-DHzDS(TFPB:1,3,5-tris(4-formylphenyl)benzene;DHzDS:2,5-bis(3-(ethylthio)propoxy)terephthalohydrazide)was first synthesized by a simpler and easier method at room temperature and introduced into capillary electrochromatography as coating material.The TFPB-DHzDS coated capillaries were prepared by an in-situ growth process at room temperature.After optimizing the coating concentration and experimental conditions of capillary electrochromatography,baseline separation of two groups of polycyclic aromatic hydrocarbons was achieved based on the TFPB-DHzDS coated capillary.And the established method was used successfully to determine PAHs in natural water and soil samples.The spiked recoveries of polycyclic aromatic hydrocarbons in these samples ranged from 90.01%to 111.0%,indicating that the method is reliable and could detect polycyclic aromatic hydrocarbons in natural samples.Finally,molecular simulation was applied to study and visualize the interaction between the analytes and coating COF materials to investigate the molecular level separation mechanism further.Yanli Zhang Wenjuan Lv Fangling Wang Xiao Niu Guoxiu Wang Xuequan Wu Xiaoyun Zhang Xingguo Chen 2023Frontiers of Chemical Science and Engineering2023,17,5:0
14Analysis on How to Improve Competency of Student-affairs-administrators in Colleges and Universities显示文摘Facing new situations and development,ideological and political work in colleges and universities presents new characteristics under the new circumstances.,which requires student-affairsadministrators to have a correct attitude,grasp the laws scientifically,study new situations,inspiring motivation,broaden work channels,and improve efficiency.Therefore,student-affairs-administrators must enhance their own quality and competency through thoroughly studying the characteristics of college students1 ideological work,scientifically grasping the ideological and political laws,and constantly improving the pertinence and effectiveness of ideological and political education.Hongde Gao Huabiao Wang Yanli Zhang Lirui Niu 2019Journal of Contemporary Educational Research2019,3,5:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费