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Enhanced performance of core-shell structured sodium manganese hexacyanoferrate achieved by self-limiting Na^(+)-Cs^(+)ion exchange for sodium-ion batteries

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Rare Metals 2022年第11期41卷 3740-3751页

作者： Yan-Dong Guo ji-Cheng jiang jian Xie Xin Wang jing-Ze Li Dong-Huang Wang Ai-jun Zhou School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu611731China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou313001China State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China

Sodium manganese hexacyanoferrate(NaMnHCF)is a promising cathode material for sodiumion batteries(SIBs)due to its low cost and high energy *** Jahn-Teller effect of Mn,however,leads to the poor structural stability of NaMnHCF,resulting in undesired electrochemical ***,we developed a novel coating strategy and obtained a coreshell structured NaMnHCF through facile Na^(+)-Cs^(+)ion exchange,which naturally produced a robust and insoluble Cs-rich surface layer(CsMnHCF)with several nanometers in thickness on pristine *** is shown that the Csrich surface plays a positive role in the stability of the NaMnHCF structure by prohibiting the leakage of crystal water,stabilizing the solid-liquid interfaces,and solidifying crystal *** electrochemical performance of the core-shell NaMnHCF is dramatically improved with a discharge capacity of 76.3 mAh·g^(-1)after 1000 cycles at 1.0 C and a reversible capacity of 87.0 mAh·g^(-1)at 10.0 C,which is much superior to that of the pristine NaMnHCF with only 26.6 mAh·g^(-1)after 400 cycles and 31 mAh·g^(-1)at 10.0 *** work reports a new method for the synthesis of core-shell NaMnHCF and provides a novel perspective for the development of advanced NaMnHCF cathode for SIBs.

关键词： Sodium manganese hexacyanoferrate Ion-exchange Core-shell structure Surface modification Sodium-ion batteries

A peptide-based near-infrared fluorescence probe for dynamic monitoring senile plaques in Alzheimer＇s disease mouse model

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Science Bulletin 2017年第23期62卷 1593-1601页

作者： Chen-Wei Wang Dou-Dou Nan Xin-Meng Wang zun-ji Ke Guo-jun Chen jiang-Ning Zhou CAS Key Laboratory of Brain Function and Disease School of Life Sciences University of Science and Technology of China Hefei 230026 China Department of Biochemistry Shanghai University of Traditional Chinese Medidne Shanghai 201203 China Department of Neurology The First Affiliated Hospital of Chongqing Medical University Chongqing Key Laboratory of Neurology Chongqing 400016 China

In vivo monitoring neuropathological changes in Alzheimer＇s disease （AD） animal model is critical for drug development. Here, by integrating blood-brain barrier penetrable peptide, we have developed a peptide probe which based on angiopep-2. Angiopep-based probe exhibited high binding affinity to Aβ aggregates and labeled senile plaques in vivo. Remarkably, the in vivo near-infrared imaging data revealed that fluorescence signals of this probe were nearly 3-fold higher in the brains of 16-monthold APP/PSI transgenic mice compared to C57 mice and exhibited linear correlation with the senile plaques load process in 4-, 8-, 16-month-old APP/PSI transgenic mice. Moreover, senile plaques load was detected in vivo as early as 4 months of age that even at the very beginning of plaques developed in APP/PS1 transgenic mice. Taken together, this novel peptide-based probe achieved dynamic monitoring senile plaques in APP/PS1 transgenic mice and have been ready to use in drug development in AD mouse model.

关键词： Alzlaelmer's diseaseSenile plaquesAmyloid-β LRP-1 Angiopep In vivo imaging AD animal model

Passive vibration control of truss-cored sandwich plate with planar Kagome truss as one face plane

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Science China(Technological Sciences) 2011年第5期54卷 1113-1120页

作者： GUO Xu jiang jun MOE Key Laboratory of Strength and Vibration Xi'an Jiaotong University Xi'an 710049 China

Kagome based high authority shape morphing structure is a kind of truss-cored sandwich metal plate with a planar Kagome truss as one of its face plane. The planar Kagome truss can achieve arbitrary in-plane nodal displacements with minimal internal resistance when its rods are deformed. Moreover, the in-plane deflection of the planar Kagome truss may induce the lateral deflection of the whole sandwich plate. In this paper, the feasibility to enhance the damping of the truss-cored sandwich plate through the replacement of a very small portion of rods in the planar Kagome truss by cylindrical viscoelastic dampers is exploited. The Biot model is chosen to simulate the behavior of the viscoelastic material in the dampers, and the fraction of axial modal strain energy of the rods in the planar Kagome truss is adopted as the index to decide the positions of the dampers. Through complex modal analysis and time-domain simulation, it is shown that the passive vibration control approach is very effective for the vibration reduction of this kind of truss-cored sandwich plates.

关键词： truss-cored sandwich plate passive vibration control cylindrical viscoelastic damper modal strain energy

The Correlation between Gamma-ray and Radio Emissions in γ-ray Loud Blazars

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Chinese Journal of Astronomy and Astrophysics 2005年第3期5卷 229-237页

作者： jiang-HeYang jun-HuiFan DepartmentofPhysicsandElectronicsScience HunanUniversityofArtsandScienceChangde415000／／CenterforAstrophysicsGuangzhouUniversityGuangzhou510405 CenterforAstrophysics GuangzhouUniversityGuangzhou510405／／NationalAstronomicalObservatoriesChineseAcademyofSciencesBeijing100012／／PhysicsInstituteHunanNormalUniversityChangsha410081

We collect 119 γ-ray-loud blazars (97 flat spectrum radio quasars (FSRQs) and 22 BL Lacertae objects (BL Lacs)), and investigate possible correlations between their γ-ray emission (maximum, minimum and average values) at 1 GeV and the radio emission at 8.4 GHz. Our main results are as follows. For the lower state γ-ray data, there is no correlation between the γ-ray and radio flux density; For the high state γ-ray data, there are good correlations for the whole 119 blazars and 97 FSRQs, and a weak correlation for the 22 BL Lac objects; For the average γ-ray data, there are good correlations. According to our analysis, we propose that the γ-rays are associated with the radio emission from the jet, and that the γ-ray emission is likely from the SSC process in this case.

关键词： Galaxies: active - BL Lacertae objects- quasars

A gravity heat pipe for high voltage vacuum interrupter

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第9期10卷 1305-1312页

作者： Xiao-ling YU Zhi-yuan LIU Quan-ke FENG Yi-jiang WEI ji-mei WANG Xiang-jun ZENG School of Energy and Power Engineering Xi 'an Jiaotong University Xi 'an 710049 China School of Electrical Engineering Xi'an Jiaotong University Xi 'an 710049 China

To enhance nominal current of high voltage vacuum circuit breakers （VCBs）, a gravity heat pipe was proposed to replace stationary conducting rod of a high voltage vacuum interrupter. The heat pipe is composed of two coaxis tubes： the external tube is made of oxygen-free copper and the inner tube is made of stainless steel. The bottom end of the inner stainless steel tube is connected to the external copper tube by holes. Transient and static thermal performance of the heat pipe was measured, and the thermal resistance of it was compared with that of a solid copper rod with the same dimensions. Experimental results showed that thermal resistance of the heat pipe was about 1/3 of that of the copper rod, and it decreased slightly with the rising of the input heat flux. 3D thermal simulation on a 126 kV/2000 A single break VCB was done to compare the thermal performance between the proposed gravity heat pipe and the copper rod serving as the stationary conducting rod of the vacuum interrupter. Simulation results revealed that in the heat pipe case, the maximum temperature between contacts was 67 ℃ lower than that in the copper rod case.

关键词： Heat pipe Vacuum circuit breakers (VCBs) Vacuum interrupters Nominal current Thermal simulation

降雨诱发国道G326顺层滑坡破坏与运动过程研究

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三峡大学学报（自然科学版） 2025年第1期47卷 44-49页

作者：刘仕洪宋琨郭磊曹俊姜波贵州省铜仁公路管理局贵州铜仁554200 三峡大学防灾减灾湖北省重点实验室湖北宜昌443002 贵州省交通规划勘察设计研究院股份有限公司贵阳550081

贵州省国道G326松桃县甘龙镇石板村田堡组顺层滑坡是2020年强降雨诱发的滑坡灾害.在对滑坡变形破坏特征调查的基础上,分析了强降雨诱发滑坡滑动破坏的成因.采用物质点法(materialpointmethod,MPM)进行了滑坡运动过程的模拟,揭示了滑坡... 详细信息

贵州省国道G326松桃县甘龙镇石板村田堡组顺层滑坡是2020年强降雨诱发的滑坡灾害.在对滑坡变形破坏特征调查的基础上,分析了强降雨诱发滑坡滑动破坏的成因.采用物质点法(materialpointmethod,MPM)进行了滑坡运动过程的模拟,揭示了滑坡运动的速度和冲击荷载等变化规律.结果表明:国道G326滑坡是受2020年7月8日的强降雨诱发的中型顺层岩质滑坡,在8日4时的小时降雨量为96.2mm后约3h发生整体滑移破坏;物质点法能够较真实地模拟滑坡的运动、堆积过程,模拟的堆积体形态与滑坡破坏调查情况基本一致;滑坡岩土体的最大滑动速度为27m/s,最大滑动动能为1.8×109J(15s左右),最大冲击力为37.98×106kN,位于距滑坡后缘约230m处.该研究对国道G326沿线类似滑坡灾害的风险防控具有参考价值和工程借鉴意义.

关键词：降雨滑坡顺层滑动运动过程模拟物质点法冲击荷载

Protection Against Hepatic Ischemia-reperfusion Injury in Rats by Oral Pretreatment With Quercetin

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Biomedical and Environmental Sciences 2003年第1期16卷 1-8页

作者： jun-FENG SU, CHANG-jiang GUO , jiNG-YU WEI, ji-jun YANG, YU-GANG jiang, AND YUN-FENG LIDepartment of Nutrition, Institute of Hygiene and Environmental Medicine, Tianjin 300050, China Department of Nutrition Institute of Hygiene and Environmental MedicineTianjin 天津 300050

Objective To investigate the possible protection provided by oral quercetin pretreatment against hepatic ischemia-reperfusion injury in rats. Methods The quercetin （0.13 mmol/kg） was orally administrated in 50 min prior to hepatic ischemia-reperfusion injury. Ascorbic acid was also similarly administered. The hepatic content of quercetin was assayed by high performance liquid chromatography （HPLC）. Plasma glutamic pyruvic transaminase （GPT）, glutamic oxaloacetic transaminase （GOT） activities and malondialdehyde （MDA） concentration were measured as markers of hepatic ischemia-reperfusion injury. Meanwhile, hepatic content of glutathione （GSH）, activities of superoxide dismutase （SOD）, glutathione peroxidase （GSH-Px） and xanthine oxidase （XO）, total antioxidant capacity （TAOC）, contents of reactive oxygen species （ROS） and MDA, DNA fragmentation were also determined. Results Hepatic content of quercetin after intragastric administration of quercetin was increased significantly. The increases in plasma GPT

关键词： Quercetin Ischemia-reperfusion injury Lipid peroxidation Liver

Counter-ion insertion of chloride in Mn3O4 as cathode for dual-ion batteries: A new mechanism of electrosynthesis for reversible anion storage

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Carbon Energy 2020年第3期2卷 437-442页

作者： Heng jiang Xiulei ji Department of Chemistry Oregon State UniversityCorvallisOregon

Irreversible reductive insertion of Zn2+transforms Mn3O4 such that the resulting Zn0.2Mn3O4 exhibits highly reversible storage properties of chloride ions,thus rendering Zn0.2Mn3O4 an excellent cathode of aqueous dual-ion *** Zn2+trapped,Zn0.2Mn3O4 delivers the chloride-storage capacity over 200 mAh/g at an average potential of 1.6 V vs Zn2+/Zn by reversibly forming a new ionic compound equivalent to *** quartz crystal microbalance results suggest chloride as the primary charge carrier in the reversible oxidative anion *** Mn3O4 anion-hosting cathode couples with Zn metal anode in a full-cell dual-ion battery,demonstrating stable cycling in practical pouch cells with an energy density of 150 Wh/kg based on the mass of both electrodes.

关键词： anion insertion counter-ion insertion dual-ion battery metal oxide cathode Zn batteries

Evaporation Characteristics of Ethanol Diesel Droplets Containing Nanoparticles

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Journal of Shanghai jiaotong university(Science) 2021年第2期26卷 201-209页

作者： WANG Xiaorong WEI Ning GAO ji YAN jun jiang Genzhu School of Mechanical Engineering Jiangsu University of Science and TechnologyZhenjiang 212100JiangsuChina

Evaporation plavs an important role in the cylinder combustion *** the study of fiel evaporation characteristics is very important to improve the combustion performance of internal combustion *** this study,ethanol diesel was used as the base *** evaporation characteristics of droplets at different ambient temperatures(623 K.923 K)were investigated by adding alumina nanoparticles with different mass fractions(1%,2.5%)to ethanol *** results show that the evaporation states of three kinds of droplets(et hanol diesel,base fuel with 1%alumina nanoparticles,base fuel with 2.5%alumina nanoparticles)are similar in the low temperature environment,and nanoparticles inhibit the evaporation of the *** low temperature,the higher the concentration of nanoparticles is,the slower the evaporation rate *** the high temperature environment,nanoparticles significantly promote droplet *** the phenomenon of micro explosion is *** analvzine the evaporation processes of two different temperatures,we kuow that nanoparticles *** on the surface of the droplet,theu form a protective shell,and finally reduce the evaporation rate of the droplet at low *** the high temperature environment,mucleation sites and bubbles are formed in the interior of the droplet:as the droplet is heated further,mucleation sites and bubbles first gather and then fuse:the bubbles gradually expand and burst *** micro explosion of the *** most of them are evaporated in the micro explosion.

关键词： eio capiosion ethanol diesel nanoparticles droplet evaporation bubble micro explosion