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Insights into layered-tunnel dynamic structural evolution based on local coordination chemistry regulation for high-energy-density and long-cycle-life sodium-ion oxide cathodes

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InfoMat 2023年第10期5卷 32-42页

作者： yao Xiao Yi-Feng Liu Hong-Wei Li Jia-Yang Li Jing-Qiang Wang hai-Yan Hu Yu Su Zhuang-Chun Jian Hu-Rong yao Shuang-Qiang Chen Xian-Xiang Zeng Xiong-Wei Wu Jia-Zhao Wang Yan-Fang Zhu Shi-Xue Dou Shu-Lei Chou Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhouthe People's Republic of China Wenzhou Key Laboratory of Sodium-Ion Batteries Wenzhou University Technology Innovation Institute for Carbon NeutralizationWenzhouthe People's Republic of China State Key Laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringXi'an Jiaotong UniversityXi'anthe People'sRepublic of China School of Chemistry and Materials Science Hunan Agricultural UniversityChangshathe People's Republic of China Institute for Superconducting and Electronic Materials Australian Institute for Innovative Materials University of Wollongong Innovation CampusNorth WollongongNew South WalesAustralia Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials College of Physics and EnergyFujian Normal UniversityFuzhouthe People's Republic of China

The pursuit of high energy density while achieving long cycle life remains a challenge in developing transition metal(TM)oxide cathode materials for sodium-ion batteries(SIBs).Here,we present a concept of precisely manipulating structural evolution via local coordination chemistry regulation to design high-performance composite cathode *** controllable structural evolution process is realized by tuning magnesium content in Na0.6Mn1-xMgxO2,which is elucidated by a combination of experimental analysis and theoretical *** substitution of Mg into Mn sites not only induces a unique structural evolu-tion from layered–tunnel structure to layered structure but also mitigates the Jahn–Teller distortion of Mn3+.Meanwhile,benefiting from the strong ionic inter-action between Mg2+and O2-,local environments around O2-coordinated with electrochemically inactive Mg2+are anchored in the TM layer,providing a pinning effect to stabilize crystal structure and smooth electrochemical *** layered–tunnel Na0.6Mn0.95Mg0.05O2 cathode material delivers 188.9 mAh g-1 of specific capacity,equivalent to 508.0 Wh kg-1 of energy density at 0.5C,and exhibits 71.3%of capacity retention after 1000 cycles at 5C as well as excellent compatibility with hard carbon *** work may provide new insights of manipulating structural evolution in composite cathode materials via local coordi-nation chemistry regulation and inspire more novel design of high-performance SIB cathode materials.

关键词： dynamic structural evolution high-energy-density layered-tunnel structure local coordination chemistry sodium-ion oxide cathodes

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潞安矿区煤水共采技术研究

岩石力学与工程学报 2009年第2期28卷 395-402页

作者：白海波茅献彪姚邦华唐军华中国矿业大学深部岩土力学与地下工程国家重点实验室江苏徐州221008 中国矿业大学理学院江苏徐州221008 山西潞安集团技术处山西长治046204

为了水资源的可持续利用和煤矿安全开采,基于绿色开采理念和采动岩体渗流理论,提出区别于疏干开采和排供结合的煤与水共采的观点。以潞安矿区为基地,分析地下水系统特点,发现并利用了奥陶系顶部隔水层,成功实施矿井水资源化利用和煤与... 详细信息

为了水资源的可持续利用和煤矿安全开采,基于绿色开采理念和采动岩体渗流理论,提出区别于疏干开采和排供结合的煤与水共采的观点。以潞安矿区为基地,分析地下水系统特点,发现并利用了奥陶系顶部隔水层,成功实施矿井水资源化利用和煤与水共采。研究结果表明:煤与水共采既适度开发地下水、维持泉组流量处于动态平衡状态,又经济安全地开采了浅部大量受水威胁的煤炭资源。奥陶系顶部隔水层是不需大幅度降低底板奥灰水位就能实现煤水共采的前提和保障,不仅解放了3#煤,而且解放了占矿区总储量1/3的下组煤;煤与煤系地层水共采和矿井水的净化利用为保持矿区乃至整个盆地地下水资源的采补基本平衡做出了重要贡献。煤与水共采是以保水、保安及环境保护为前提的2种资源的合理开采。

关键词：采矿工程奥陶系隔水层水环境绿色开采

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中国农村金融改革:基于金融功能观的分析

西安交通大学学报（社会科学版） 2006年第4期26卷 1-6页

作者：姚耀军浙江工商大学金融学院浙江杭州310018

多年来中国农村金融改革所遵循的是金融机构观,这使得农村金融体系未能有效发挥金融资源的配置功能;背离金融功能观的农村金融改革,仅仅局限于既有金融结构内部的修补,而不是按照市场经济的原则,根据外界经济环境的变化,发展出能够实现... 详细信息

多年来中国农村金融改革所遵循的是金融机构观,这使得农村金融体系未能有效发挥金融资源的配置功能;背离金融功能观的农村金融改革,仅仅局限于既有金融结构内部的修补,而不是按照市场经济的原则,根据外界经济环境的变化,发展出能够实现金融功能的规则、制度等具体的金融形态,并且进行金融结构的优化;农村经济的发展需要农村金融体系正常金融功能的复归。中国农村金融改革应实现农村金融发展模式的多元化;放松对农村非正规金融的管理;推动一个竞争性农村金融体系的形成。

关键词：农村金融改革金融功能范式配置功能

Reconstruction of fission events in heavy ion reactions with the compact spectrometer for heavy ion experiment

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Nuclear Science and Techniques 2022年第4期33卷 1-9页

作者： Xin-Yue Diao Fen-hai Guan Yi-Jie Wang Yu-Hao Qin Zhi Qin Dong Guo Qiang-Hua Wu Da-Wei Si Xuan Zhao Sheng Xiao yao-Peng Zhang Xiang-Lun Wei hai-Chuan Zou He-Run Yang Peng Ma Rong-Jiang Hu Li-Min Duan Artur Dobrowolski Krzysztof Pomorski Zhi-Gang Xiao Department of Physics Tsinghua UniversityBeijing 100084China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Institute of Physics Maria Curie Skłodowska UniversityLublin 20031Poland

We report a reconstruction method for fast-fission events in 25 MeV/u^(86)Kr +^(208)Pb reactions at the Compact Spectrometer for Heavy Ion Experiment(CSHINE). The fission fragments(FFs) are measured using three large-area parallel-plate avalanche counters, which can deliver the position and arrival timing information of the fragments. The start timing information is provided by the radio frequency of the cyclotron. Fission events were reconstructed using the velocities of the two FFs. The broadening of both the velocity distribution and azimuthal difference of the FFs decreases with the folding angle, in accordance with the picture that fast fission occurs. The anisotropic angular distribution of the fission axis also consistently reveals the dynamic features of fission events.

关键词： Fast fission Heavy ion reactions Parallelplate avalanche counter CSHINE

Zircon U-Pb dating confirms existence of a Caledonian scheelite-bearing aplitic vein in the Penggongmiao granite batholith, South Hunan

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Chinese Science Bulletin 2011年第19期56卷 2031-2036页

作者： ZHANG WenLan WANG RuCheng LEI ZeHeng HUA RenMin ZHU JinChu LU Jianjun XIE Lei CHE XueDong ZHANG RongQing yao Yuan CHEN jun School of Earth Sciences and Engineering State Key Laboratory for Mineral Deposits Research Nanjing University Nanjing 210093 China South Hunan Geological Survey Chenzhou 423000 China

Granite at Penggongmiao is a large batholith in the Nanling Range, with an outcrop area of over 900 km 2 . There are many scheelite-quartz veins around the granite. LA-ICP-MS U-Pb dating was carried out for zircons from the granite. The middlecoarse-grained biotite granite has U-Pb ages of 435 to 436 Ma. Ages of 426.5±2.5 Ma were obtained for aplitic dyke cross-cutting the granite. The scheelite of magmatic origin in the aplite dyke was identified from petrographic investigation. This demonstrates that W-bearing granites of Early Paleozoic (corresponding to the Caledonian orogensis in the traditional sense) occur in the Nanling Range. This finding has important implications for the ore-forming potential of Paleozoic granites and on the extent of Mesozoic mineralization. Thus it merits performing an intensive study of Paleozoic granites in South China. The occurrences of aplite or microgranite may be an indicative of the Caledonian tungsten granites and associated W mineralization.

关键词：花岗岩基加里东期白钨矿年龄 Pb 锆石轴承静脉

New design to remove leukocytes from platelet-rich plasma(PRP)based on cell dimension rather than density

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Bioactive Materials 2021年第10期6卷 3528-3540页

作者： Subhaini Jakfar Tzu-Chieh Lin Shinn-Chih Wu yao-Horng Wang Yu-jun Sun Minal Thacker Li-Xin Liu Feng-Huei Lin Institute of Biomedical Engineering National Taiwan UniversityTaipei106China Dentistry Faculty Syiah Kuala UniversityDarussalam23111Banda AcehIndonesia Department of Animal Science and Technology National Taiwan UniversityTaipeiChina Department of Nursing Yuanpei University of Medical Technology306Yuanpei StreetHsinchu300China School of Materials Science and Engineering Center of Functional BiomaterialsKey Laboratory of Polymeric Composite Materials and Functional Materials of EducationGD Research Center for Functional Biomaterials Engineering and TechnologySun Yat-Sen UnversityGuangzhou510275China Institute of Biomedical Engineering and Nanomedicine National Health Research InstitutesMiaoli350China

Platelet-rich plasma(PRP)can stimulate the proliferation of stem cells and have a positive effect on tissue *** many commercialized PRP preparation kits are already on the market,first-line clinical workers are still not satisfied with most of the PRP *** work of commercial PRP kits is based on the density of blood ***,the blood elements are very close in density which makes the separation ***,the mentioned commercialized kits are generally contaminated by leucocytes and *** this study,a home-designed PRP device was developed to use a separation membrane with adequate cut-off pore size of 5μm,3μm and 2μm for the groups of H5M,H3M,and H2M,respectively,to be placed in the middle of the centrifuge *** home-designed H2M showed a very promising results regardless of the final volume(1.82±0.09 ml),platelet yield(8.39±0.44%),Red Blood Cells(0%),White Blood Cells(0%),and Relative Concentration of Platelet Increment value(225.09%).Further,it showed a good result in cell viability and cytotoxicity and confirmed a good multilineage *** concentration in PRP prepared by group H2M was relatively stable and far above *** the fibrin fibers were linked together as bridging strands or strings and turned into an inter-connected porous structure for nutrients transportation and regenerative cell *** believe that the home-designed group H2M should have a great potential to develop into the final product to meet the requirements of first-line clinical workers.

关键词： Platelet-rich plasma(PRP) Filtered-tube design Homemade design Cut-off pore size Platelets Growth factors

“关系-结构”双重社会网络对工作绩效作用机制研究——N城地产销售业调查结果的实证分析

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软科学 2009年第3期23卷 134-139,144页

作者：姚俊南京大学社会心理学研究所南京210093

通过对地产销售从业人员的实证调查,探究销售人员的"关系性"和"结构性"社会网络对其工作绩效的影响机理。实证研究发现:关系社会网对工作绩效的影响具有稳定性,但对工作绩效的不同维度的影响变量存在显著差异;结构社会网对工作绩效影响... 详细信息

通过对地产销售从业人员的实证调查,探究销售人员的"关系性"和"结构性"社会网络对其工作绩效的影响机理。实证研究发现:关系社会网对工作绩效的影响具有稳定性,但对工作绩效的不同维度的影响变量存在显著差异;结构社会网对工作绩效影响力度小,主要集中在情感网络程度中心性和情报网络中介中心性两个变量上;结构社会网在关系社会网与工作绩效关系中不起中介作用。

关键词：社会网络工作绩效网络中心性网络中介性

Common bile duct morphology is associated with recurrence of common bile duct stones in Billroth II anatomy patients

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World Journal of Clinical Cases 2021年第26期9卷 7671-7681页

作者： Xu Ji Wen Jia Qian Zhao yao Wang Shu-Ren Ma Lu Xu Ying Kan Yang Cao Bao-jun Fan Zhuo Yang Department of Digestive Endoscopy General Hospital of Northern Theater CommandShenyang 110840Liaoning ProvinceChina Postgraduate College Dalian Medical UniversityDalian 116044Liaoning ProvinceChina Postgraduate College Liaoning University of Traditional Chinese MedicineShenyang 110847Liaoning ProvinceChina Postgraduate College Jinzhou Medical UniversityJinzhou 121001Liaoning ProvinceChina

BACKGROUND Endoscopic retrograde cholangiopancreatography(ERCP)is the primary choice for removing common bile duct(CBD)stones in Billroth II anatomy *** recurrence of CBD stones is still a challenging *** To evaluate CBD morphology and other predictors affecting CBD stone *** A retrospective case-control analysis was performed on 138 CBD stones patients with a history of Billroth II gastrectomy,who underwent therapeutic ERCP for stone extraction at our center from January 2011 to October *** morphology and other predictors affecting CBD stone recurrence were examined by univariate analysis and multivariate logistic regression *** CBD morphology(P<0.01)and CBD diameter≥1.5 cm(odds ratio[OR]=6.15,95%confidence interval[CI]:1.87-20.24,P<0.01)were the two independent risk *** multivariate analysis,the recurrence rate of patients with S type was 16.79 times that of patients with straight type(OR=16.79,95%CI:4.26-66.09,P<0.01),the recurrence rate of patients with polyline type was 4.97 times that of patients with straight type(OR=4.97,95%CI:1.42-17.38,P=0.01),and the recurrence rate of S type patients was 3.38 times that of patients with polyline type(OR=3.38,95%CI:1.07-10.72,P=0.04).CONCLUSION CBD morphology,especially S type and polyline type,is associated with increased recurrence of CBD stones in Billroth II anatomy patients.

关键词： Endoscopic retrograde cholangiopancreatography Common bile duct stones Recurrence Billroth II anatomy Common bile duct morphology Risk factors

Ternary Ni-based Prussian blue analogue with superior sodium storage performance induced by synergistic effect of Co and Fe

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Carbon Energy 2021年第5期3卷 827-839页

作者： Lu-Lu Zhang Cheng Wei Xin-Yuan Fu Zhao-yao Chen Bo Yan Pan-Pan Sun Kai-jun Chang Xue-Lin Yang Hubei Provincial Collaborative Innovation Center for New Energy Microgrid College of Electrical Engineering&New EnergyChina Three Gorges UniversityYichangHubeiChina College of Materials and Chemical Engineering China Three Gorges UniversityYichangHubeiChina Hubei Gaobo Technology Inc. JingzhouHubeiChina

Prussian blue analogue Na2Ni[Fe(CN)6](Ni-PB)has been widely studied as a cathode material for sodium-ion battery due to its excellent cycling ***,Ni-PB has a low theoretical capacity of 85 mAh g^(−1) because of the electrochemical inertness of ***,ternary Ni-PB is successfully synthesized by double doping with Co and Fe at Ni-site,and the effect of doping with Co and Fe on the electrochemical performance of Ni-PB is systematically investigated through theoretical calculations and electrochemical *** first principles calculations confirm that double doping with Co and Fe can significantly reduce the energy barrier and bandgap of Ni-PB.X-ray diffraction and composition analysis results indicate that ternary NiCoFe-PB composite not only has good crystallinity and high Na content but also has low defects and crystal *** tests reveal that,besides the capacity contribution of high-spin Co/Fe and low-spin Fe,Co-doping enhances the electrochemical activity of low-spin Fe and Fe-doping improves the activity of high-spin Co;moreover,double doping can decrease the diffusion resistance of Na+ions through solid electrolyte interface film,accelerate the kinetics for both ion diffusion process and Faradic reaction,and increase active *** the synergistic effect of Co and Fe,this ternary NiCoFe-PB exhibits outstanding electrochemical performance with a high initial discharge capacity of 120.4 mAh g^(−1) at 20mA g^(−1) and an extremely low capacity fading rate of 0.0044%per cycle at a high current density of 2 A g^(−1) even after 10,000 cycles,showing great application potential of ternary NiCoFe-PB in the field of large-scale energy storage.

关键词： cathode materials doping Prussian blue analogue sodium-ion batteries synergistic effect