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From protonation & Li-rich contamination to grain-boundary segregation: Evaluations of solvent-free vs. wet routes on preparing Li_(7)La_(3)Zr_(2)O_(12) solid electrolyte

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Journal of Energy Chemistry 2022年第10期31卷 223-239,I0005页

作者： Xiao Huang Yang lu Yajun Niu Jiawen Tang Yongjian Zhou Yan Yang bingbing Tian SZU-NUS Collaborative Innovation Center for Optoelectronic Science&Technology International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of EducationInstitute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060GuangdongChina Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Collaborative Innovation Center for Vessel Pollution Monitoring and Control Dalian Maritime UniversityDalian 116026LiaoningChina

Garnet-type Li_(7)La_(3)Zr_(2)O_(12)(LLZO) has been recognized as a candidate solid electrolyte for high-safety Lianode based solid-state batteries because of its electro-chemical stability against Li-metal and high ionic conductivity. Solvent(e.g., isopropanol(IPA)) has been commonly applied for preparing LLZO powders and ceramics. However, the deterioration of the proton-exchange between LLZO and IPA/absorbed moisture during the mixing and tailoring route has aroused less attention. In this study, a solvent-free dry milling route was developed for preparing the LLZO powders and ceramics. For orthogonal four categories of samples prepared using solvent-free and IPA-assisted routes in the mixing and tailoring processes, the critical evaluation was conducted on the crystallinity, surficial morphology, and contamination of ascalcinated and as-tailored particles, the cross-sectional microstructure of green and sintered pellets,the morphology and electro-chemical properties of grain boundaries in ceramics, as well as the interfacial resistance and performance of Li anode based symmetric batteries. The wet route introduced Li-rich contaminations(e.g., Li OH·H)_(2)O and Li)_(2)CO)_(3)) onto the surfaces of LLZO particles and Li-Ta-O segregations at the adjacent and triangular grain boundaries. The LLZO solid electrolytes prepared through dry mixing in combination with the dry tailoring route without the use of any solvent were found to the optimal performance. The fundamental material properties in the whole LLZO preparation process were found, which are of guiding significance to the development of LLZO powder and ceramic production craft.

关键词： Li_(7)La_(3)Zr_(2)O_(12) Solid electrolyte Solvent-free procedure Ion-exchange Grain boundary Fundamental material properties

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圈养灵长类动物肝炎病毒血清流行病学的调查

现代畜牧兽医 2023年第2期 65-68页

作者：农汝吴俊仪黄宁曹佳媛杨露黄泽琳陆兵兵王松南宁市动物园广西南宁530003

研究旨在了解南宁市动物园圈养非人灵长类动物人类肝炎病毒感染情况,采用间接酶联免疫法或发光免疫法对园内17种非人灵长类动物血清样本中甲型肝炎病毒(HAV)、丙型肝炎病毒(HCV)、丁型肝炎病毒(HDV)、戊型肝炎病毒(HEV)抗体以及乙型肝... 详细信息

研究旨在了解南宁市动物园圈养非人灵长类动物人类肝炎病毒感染情况,采用间接酶联免疫法或发光免疫法对园内17种非人灵长类动物血清样本中甲型肝炎病毒(HAV)、丙型肝炎病毒(HCV)、丁型肝炎病毒(HDV)、戊型肝炎病毒(HEV)抗体以及乙型肝炎病毒(HBV)两对半检测。结果显示,所有血清样本中HAV、HCV、HEV和HDV抗体的检测结果均为阴性。除戴帽长臂猿、其他类长臂猿外,其余15种灵长类动物的乙肝两对半检测结果均为全阴性。乙肝两对半检测结果中,1,3,5项阳性11例,占总样本数的6.47%,其中戴帽长臂猿10例,其他类长臂猿1例;2,4,5项阳性6例,占总样本数的3.53%,其中戴帽长臂猿4例,其他类长臂猿2例;乙肝表面抗体(HBsAb)阳性5例,占总样本数的2.96%,其中其他类长臂猿4例,戴帽长臂猿1例。研究表明,长臂猿动物可以感染或携带HBV,试验未检出HAV、HCV、HDV、HEV阳性个体。

关键词：圈养灵长类动物肝炎病毒血清标志物

Magnetoelastic combined resonance and stability analysis of a ferromagnetic circular plate in alternating magnetic field

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Applied Mathematics and Mechanics(English Edition) 2019年第7期40卷 925-942页

作者： Yuda HU bingbing MA School of Civil Engineering and Mechanics Yanshan University Qinhuangdao 066004 Hebei Province China Hebei Key Laboratory of Mechanical Reliability for Heavy Equipment and Large Structures Yanshan University Qinhuangdao 066004 Hebei Province China

The nonlinear combined resonance problem of a ferromagnetic circular plate in a transverse alternating magnetic field is investigated. On the basis of the deformation potential energy, the strain potential energy, and the kinetic energy of the circular plate, the Hamilton principle is used to induce the magnetoelastic coupling transverse vibration dynamical equation of the ferromagnetic circular plate. Based on the basic electromagnetic theory, the expressions of the magnet force and the Lorenz force of the circular plate are presented. A displacement function satisfying clamped-edge combined with the Galerkin method is used to derive the Duffing vibration differential equation of the circular plate. The amplitude-frequency response equations of the system under various combined resonance forms are obtained by means of the multi-scale method, and the stability of the steady-state solutions is analyzed according to the Lyapunov theory. Through examples, the amplitude-frequency characteristic curves with different parameters, the amplitude of resonance varying with magnetic field intensity and excitation force, and the time-course response diagram, phase diagram, Poincar′e diagram of the system vibration are plotted, respectively. The effects of different parameters on the amplitude and stability of the system are discussed. The results show that the electromagnetic parameters have a significant effect on the multi-valued attribute and stability of the resonance solutions, and the system may exhibit complex nonlinear dynamical behavior including multi-period and quasi-periodic motion.

关键词： magnetoelasticity ferromagnetic circular plate combined resonance multi- scale method alternating magnetic field

Securely min and k-th min computations with fully homomorphic encryption

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Science China(Information Sciences) 2018年第5期61卷 309-314页

作者： bingbing JIANG Yuan ZHANG Department of Computer Science and Technology Nanjing University

Due to the rapid development of smart phones that have decent computing and sensing abilities,it is now possible to outsource a sensing job to many smartphone *** can then perform computations on the data collected by the ***,the users may reveal their private information in the process of sending the collected data to the ***,the users may transmit the encrypted data to the server,meaning the server is not able to compute the extra knowledge about the plain data in the execution of the protocol.

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多组短辊对基板玻璃翘曲品质影响研究

中国建材科技 2024年第S1期33卷 63-65页

作者：陆兵兵江可姚慧慧赵荣何志锋宋月彩虹显示器件股份有限公司陕西咸阳712000 虹阳显示(咸阳)科技有限公司陕西咸阳712000

本文重点分析了多组短辊夹持下玻璃的受力情况,并在此基础上,探讨多组短辊线速度对基板玻璃翘曲品质的影响。结果表明:从拉边设备到牵引辊,玻璃在流向方向上受拉力作用;从牵引辊到辅助辊,玻璃在流向方向上可能受拉力作用,也可能受压力... 详细信息

本文重点分析了多组短辊夹持下玻璃的受力情况,并在此基础上,探讨多组短辊线速度对基板玻璃翘曲品质的影响。结果表明:从拉边设备到牵引辊,玻璃在流向方向上受拉力作用;从牵引辊到辅助辊,玻璃在流向方向上可能受拉力作用,也可能受压力作用。线速度比与线速度差会在不同程度上影响基板玻璃翘曲品质,只有当二者同在合理范围时,才能保证翘曲品质良好。

关键词：基板玻璃短辊线速度受力分析翘曲

基于互联网技术的中压电力电缆生产过程远程监造系统

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电力与能源 2017年第3期38卷 247-250页

作者：胡正勇李骥徐湘忆黄华曹志强陆冰冰国网上海市电力公司电力科学研究院上海200437 上海电缆研究所上海200093

为解决电力电缆生产过程中监造人员长期异地工作给电缆监造工作带来的诸多不便,在符合监造工作自身管理流程的前提下,通过互联网技术将工厂的生产情况进行信息化采集后存储到工厂数据中心,进而通过系统远程应用终端进行数据调用、数据... 详细信息

为解决电力电缆生产过程中监造人员长期异地工作给电缆监造工作带来的诸多不便,在符合监造工作自身管理流程的前提下,通过互联网技术将工厂的生产情况进行信息化采集后存储到工厂数据中心,进而通过系统远程应用终端进行数据调用、数据查询和数据分析等功能。远程监造系统的应用使电力电缆的生产监造活动更加规范及时,从而更加高效、经济的完成监造工作。

关键词：电力电缆远程监造系统生产数据

Potential Effects of Episodic Deposition on Nutrients and Heavy Metals in Decomposing Litters of Suaeda glauca in Salt Marsh of the Yellow River Estuary, China

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Chinese Geographical Science 2020年第3期30卷 466-482页

作者： CHEN bingbing SUN Zhigao Key Laboratory of Humid Subtropical Eco-geographical Process(Fujian Normal University) Ministry of EducationFuzhou 350007China Institute of Geography Fujian Normal UniversityFuzhou 350007China Fujian Provincial Key Laboratory for Subtropical Resources and Environment Fujian Normal UniversityFuzhou 350007China

Episodic deposition has been recognized as a major factor affecting the decomposition rate of detrital material in salt marshes. In this paper, three one-off burial treatments, no burial treatment(0 cm, NBT), current burial treatment(10 cm, CBT) and strong burial treatment(20 cm, SBT), were designed in intertidal zone of the Yellow River Estuary to determine the potential influences of episodic deposition on nutrient(C, N) and heavy metal(Pb, Cr, Cu, Zn, Ni, Mn, Cd, V and Co) variations in decomposing litters of Suaeda glauca. Results showed that although various burial treatments showed no statistical difference in decomposition rate of S. glauca, the values generally followed the sequence of CBT(0.002 403/d) > SBT(0.002 195/d) > NBT(0.002 060/d). The nutrients and heavy metals in decomposing litters of the three burial treatments exhibited different variations except for N, Cu, Cr, Ni and Co. Except for Mn, no significant differences in C, N, Pb, Cr, Cu, Zn, Ni, V and Co concentrations occurred among the three treatments(P > 0.05). With increasing burial depth, Cr and Cd levels generally increased while Cu, Ni and Mn concentrations decreased. Although episodic deposition was generally favorable for C and N release from S. glauca, its influence on release was insignificant. In the three burial treatments, Pb, Cr, Zn, Ni, Mn, V and Co stocks in S. glauca generally evidenced the export of metals from litter to environment, and, with increasing burial depth, the export amounts increased greatly. The S. glauca were particular efficient in binding Cd and releasing Pb, Cr, Zn, Ni, Mn, V and Co, and, with increasing burial depth, stocks of Cu in decomposing litters generally shifted from release to accumulation. The experiment indicated that the potential eco-toxic risk of Pb, Cr, Zn, Ni, Mn, V and Co exposure would be serious as the strong burial episodes occurred in S. glauca marsh.

关键词： decomposition nutrient and metal episodic deposition Suaeda glauca Yellow River Estuary

Determination of elastic and plastic mechanical properties of dentin based on experimental and numerical studies

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Applied Mathematics and Mechanics(English Edition) 2015年第10期36卷 1347-1358页

作者： Xingguo LI bingbing AN Dongsheng ZHANG Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Department of Mechanics Shanghai University Shanghai Key Laboratory of Mechanics in Energy Engineering

The aim of this study is to investigate the change of mechanical properties of human dentin due to aging and spatial variation. Sections of coronal dentin are made from human molars in three groups： young, mid-aged, and old patients. A nanoindentation test is conducted from regions near the pulp to the dentin-enamel junction （DE J） to evaluate the load-depth indentation response and determine Young＇s modulus and hardness. Based on the loading and unloading load-displacement curves in nanoindentation, a numerical model of plastic damage is used to study the plastic and the damage behaviors and the contribution to the degradation in the unloading stiffness. The experimental results show that Young＇s modulus of the inner dentin is significantly lower than that of outer dentin in each age group. Compared with the young dentin, the old dentin has greater hardness and Young＇s modulus with similar spatial variations. The magnitudes of the yield strength and the damage variable are also affected by aging and vary with spatial locations. In the same age group, the yield strength in inner dentin is lower than those in middle and outer dentin, more damage occurs with similar spatial variations, and the yield strength of young dentin is generally lower and causes more damage compared with those in both the mid-aged and old groups.

关键词： dentin mechanical property nanoindentation numerical simulation

An insight into failure mechanism of NASICON-structured Na3V2（PO4）3 in hybrid aqueous rechargeable battery

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Journal of Energy Chemistry 2019年第5期28卷 1-7页

作者： Xinxin Zhang Jun Ma Pu Hu bingbing Chen Chenglong lu Xinhong Zhou Pengxian Han Lihua Chen Guanglei Cui College of Chemistry and Molecular Engineering Qingdao University of Science & TechnologyQingdao 266042ShandongChina Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101ShandongChina Department of Mechanical & Areospace Engineering University of FloridaGainesville 32611FLUSA

NASICON (Na-super-ionic-conductors)-structured materials have attracted extensive research interest due to their great application potential in secondary batteries. However, the mechanism of capacity fading for NASICON-structured electrode materials has been rarely studied. In this paper, we synthesized the NASICON-structured Na3V2(PO4)3/C composite by simple sol-gel and high-temperature solid-phase method and investigated its electrochemical performance in Na-Zn hybrid aqueous rechargeable batteries. After characterizing the structure, morphology and composition variations as well as the interfacial resistance changes of Na3V2(PO4)3/C cathode during cycling, we propose a mechanical and interfacial degradation mechanism for capacity fading of NASICON-structured Na3V2(PO4)3/C in Na-Zn hybrid aqueous rechargeable batteries. This work will shed light on enhancing the mechanical and in terfacial stability of NASICON-structured Na3V2(PO4)3/C in Na-Zn hybrid aqueous rechargeable batteries.

关键词： Mechanical degradation Na3V2(PO4)3 Zn metal anode Hybrid aqueous battery Failure mechanism