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Chinese Physics Letters 2011年第1期28卷 26-29页

作者： XU Zhi-jun zhang dong-Mei LIU Xia-Yin College of Science Zhejiang University of Technology Hangzhou 310023

For a series of incoherent condensate atomic clouds with vortices （an orbital angular momentum） released from an optical lattice, the density-density correlation function of this freely expanding ultracold gases is theoretically investigated. It is shown that the nonzero angular momentum of the atoms has an important effect on the fringe pattern of density-density correlation. Particularly, for a short expansion time, even the rotation direction of the atoms could have an observable effect on the fringe pattern. Observation of this specific fringe pattern would constitute experimental evidence for the presence of a vortex in an atomic condensate.

关键词： Quantum gases, liquids and solids Optics, quantum optics and lasers Statistical physics and nonlinear systems

Driving lithium to deposit inside structured lithium metal anodes:A phase field model

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Journal of Energy Chemistry 2022年第10期31卷 285-291,I0007页

作者： Rui zhang Xin Shen Hao-Tian Ju jun-dong zhang Yu-Tong zhang Jia-Qi Huang Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Lithium metal anode is one of the most important anode materials for next-generation high-specificenergy secondary *** lithium metal anodes have received extensive attention in the development of practical lithium metal *** of driving lithium metal to deposit inside the pores of structured lithium metal anodes have always been one of the most concerned issues,especially for highly conductive *** electrochemical phase field theory with galvanostatic lithium plating process is employed in this work,the mechanism that illustrates the preference of lithium metal to deposit at the top of the framework structure has been revealed,and through the simulation analysis of various regulating strategies,the strategies that can efficiently drive lithium to deposit inside structured pores are *** work presents the theoretical calculation and analysis methods that can be used for the rational design of lithium metal batteries.

关键词： Lithium metal batteries Lithium metal anodes Phase field theory Finite element method Deposition sites Gradient design Diffusion coefficient

A new benzophenone glycoside from the leaves of Psidium guajava L.

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Chinese Chemical Letters 2011年第2期22卷 178-180页

作者： Hui Zheng Fu Jing Zhi Yang Chuang jun Li dong Ming zhang Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College(Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal MedicineMinistry of Education)Beijing 100050China

A new benzophenone glycoside,2,6-dihydroxy-4-O-β-D-glucopyranosylbenzophenone（1）,was isolated from the leaves of guajava *** structure was elucidated by spectral and chemical methods.1 showed significant activities... 详细信息

关键词： Psidium guajava L. Benzophenone glycoside 2,6-Dihydroxy-4-O-β-D-glucopyranosylbenzophenone NO

Dead lithium formation in lithium metal batteries:A phase field model

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Journal of Energy Chemistry 2022年第8期31卷 29-35,I0002页

作者： Rui zhang Xin Shen Yu-Tong zhang Xia-Lin Zhong Hao-Tian Ju Tian-Xiao Huang Xiang Chen jun-dong zhang Jia-Qi Huang Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Lithium metal batteries are the most promising choices for next-generation high-energy–density batteries. However, there is little mechanism understanding on lithium dendrite growth during lithium plating and the dead lithium(the main component of inactive lithium) formation during lithium stripping. This work proposed a phase field model to describe the lithium stripping process with dead lithium *** coupling of galvanostatic conditions enables the phase field method to accurately match experimental results. The factors influencing the dead lithium formation on the increasing discharge polarization are revealed. Besides, the simulation of the battery polarization curve, the capacity loss peak, and the Coulomb efficiency is realized. This contribution affords an insightful understanding on dead lithium formation with phase field methods, which can contribute general principles on rational design of lithium metal batteries.

关键词： Lithium metal batteries Lithium metal anodes Lithium dendrites Dead lithium Lithium stripping Phase field methods Finite element methods

Combined probiotic bacteria promotes intestinal epithelial barrier function in interleukin-10-gene-deficient mice

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World Journal of Gastroenterology 2014年第16期20卷 4636-4647页

作者： Chen-zhang Shi Hong-Qi Chen Yong Liang Yang Xia Yong-Zhi Yang jun Yang jun-dong zhang Shu-Hai Wang Jing Liu Huan-Long Qin Department of Surgery Affiliated Sixth People’s HospitalShanghai Jiao Tong University School of Medicine Shanghai Jiao Tong University Sine institute of Materia Medica Shanghai Sine Pharmaceutical Co.Ltd

AIM: To investigate the protective effects of combinations of probiotic (Bifico) on interleukin (IL)-10-gene-deficient (IL-10 KO) mice and Caco-2 cell monolayers.

关键词： Probiotic bacteria Intestinal barrier function Tight junction proteins Interleukin-10 gene-deficient mice Caco-2 monolayers

Natural YMDD-motif mutants affect clinical course of lamivudine in chronic hepatitis B

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World Journal of Gastroenterology 2015年第7期21卷 2089-2095页

作者： You-Wen Tan Yun Ye Guo-Hong Ge Wei Zhao Jian-He Gan Yun Zhao Zhi-Lin Niu dong-jun zhang Li Chen Xue-jun Yu Li-jun Yang Department of Liver Diseases the Third Hospital of Zhenjiang Affiliated to Jiangsu University Department of Infectious Diseases the No. 2 Hospital of Nanjing Department of Infectious Diseases the First Affiliated Hospital of Soochow University Department of Infectious Diseases the Affiliated Hospital of Yangzhou University Department of Infectious Diseases the People’s Hospital of Wujiang Nantong University School of Medicine Department of Infectious Diseases the People’s Hospital of Danyang Nantong University School of Medicine

AIM:To investigate the prevalence of nature tyrosinemethionine-aspartic acid-aspartic acid motif mutations in chronic hepatitis B(CHB)patients and to evaluate the efficacy of ***:A total of 1268 CHB patients were recruited from the outpatient and inpatient departments of six ***-methionine-aspartic acid-aspartic acid(YMDD)mutations were analyzed using the hepatitis B virus(HBV)drug resistance line probe *** voluntary patients were selected from those with positive or negative natural YMDD mutations to undergo treatment with ***:YMDD mutations were detected in 288(22.71%)of the 1268 CHB *** analysis revealed that the patients’HBV DNA level(P=0.0282)and hepatitis B e antigen status(P=0.0133)were also associated with natural YMDD *** rates of normalization of alanine aminotransferase levels and HBV DNA nondetection at 6,24,36,and 48 wk were compared between the patients with natural YMDD mutations and those without,and the differences were not ***,there was a significant difference in the cumulative emergence rates of virological breakthrough at 48 wk in the patients with natural YMDD mutations and those without(32.5%vs 12.5%,P=0.032).CONCLUSION:Naturally occurring YMDD mutationsare detectable in a large proportion of CHB patients;breakthrough hepatitis tended to occur in patients with natural YMDD mutations.

关键词： Chronic hepatitis B Mutation Tyrosinemethionine-as

Generation and regulation of electromagnetic pulses generated by femtosecond lasers interacting with multitargets

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Nuclear Science and Techniques 2024年第1期35卷 96-107页

作者： Ya-dong Xia De-Feng Kong Qiang-You He Zhen Guo dong-jun zhang Tong Yang Hao Cheng Yu-Ze Li Yang Yan Xiao Liang Ping Zhu Xing-Long Xie Jian-Qiang Zhu Ting-Shuai Li Chen Lin Wen-jun Ma Xue-Qing Yan State Key Laboratory of Nuclear Physics and Technology and Key Laboratory of HEDP of the Ministry of EducationCAPTPeking UniversityBeijing 100871China Beijing Laser Acceleration Innovation Center Beijing 101407China Institute of Guangdong Laser Plasma Technology Guangzhou 510540China National Laboratory on High Power Laser and Physics Shanghai Institute of Optics and FineChinese Academy of SciencesShanghai 201800China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China

Ultrashort and powerful laser interactions with a target generate intense wideband electromagnetic pulses(EMPs).In this study,we report EMPs generated by the interactions between petawatt(30 fs,1.4×10^(20) W/cm^(2))femtosecond(fs)lasers with metal flat,plastic flat,and plastic nanowire-array(NWA)*** analyses are conducted on the EMPs in terms of their spatial distribution,time and frequency domains,radiation energy,and *** results indicate that EMPs from metal targets exhibit larger amplitudes at varying angles than those generated by other types of targets and are enhanced significantly for NWA *** a plastic target holder and increasing the laser focal spot can significantly decrease the radiation energy of the ***,the composite shielding materials indicate an effective shielding effect against *** simulation results show that the NWA targets exert a collimating effect on thermal electrons,which directly affects the distribution of *** study provides guidance for regulating EMPs by controlling the laser focal spot,target parameters,and target rod material and is beneficial for electromagnetic-shielding design.

关键词： Electromagnetic pulses Laser plasma interaction Electromagnetic shielding Electron distribution

Study of inclusion complexes of cyclodextrin by cyclic voltammetry

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Acta Chimica Sinica(English Edition) 1988年第2期6卷 116-122页

作者： dong Shao-jun zhang dong-Bo Changchun Institute of Applied Chemistry,Academia Sinica,Changchun Department of Applied Chemistry,Chinese Science and Technology University in 1986 Changchun Institute of Applied Chemistry Academia Sinica Changchun

The inclusion complexes of a series of organometallic compound-cyclodextrin andaromatic compound-cyclodextrin have been studied by cyclic voltammetry using glassy carbon *** variations of peak potential and peak current are showed on cyclic voltammogram when the eletroac-tive guest molecules are complexed by *** constants of cyclodextrin in-clusion complexes have been calculated on the basis of this variation by both potential and *** to the magnitude of dissociation constants the relationship between the stabilityof cyclodextrin inclusion complex and the degree of matching host molecule with guest moleculehas been discussed.

关键词： NP Study of inclusion complexes of cyclodextrin by cyclic voltammetry

A high-flash-point quasi-solid polymer electrolyte for stable nickel-rich lithium metal batteries

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Journal of Energy Chemistry 2024年第12期99卷 149-158页

作者： Yu-Kun Liu Xue-Yan Huang jun-dong zhang Wei-Jin Kong Juan Du Ximin Zhai Xiaofe Bie Huanli Sun Hao zhang Chong Yan Xuechun Hao Lizhen Fan Ai-Bing Chen Chen-Zi Zhao College of Chemical and Pharmaceutical Engineering Hebei University of Science and TechnologyShijiazhuang 050018HebeiChina Tsinghua Center for Green Chemical Engineering Electrification Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua UniversityBeijing 100084China China FAW Corporation Limited Chuangchun 130013JilinChina Beijing Key Laboratory of Advanced Chemical Energy Storage Technologies and Materials Research Institute of Chemical DefenseBejing 100191China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Shanxi Research Institute for Clean Energy Tsinghua UniversityTaiyuan 030032ShanxiChina Institute of Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China

In the exploration of next-generation high-energy–density batteries,lithium metal is regarded as an ideal candidate for anode ***,lithium metal batteries (LMBs) face challenges in practical applications due to the risks associated with organic liquid electrolytes,among which their low flash points are one of the major safety *** adoption of high flash point quasi-solid polymer electrolytes(QSPE) that is compatible with the lithium metal anode and high-voltage cathode is therefore a promising strategy for exploring high-performance and high-safety ***,we employed the in-situ polymerization of poly (epoxidized soya fatty acid Bu esters-isooctyl acrylate-ditrimethylolpropane tetraacrylate)(PEID) to gel the liquid electrolyte that formed a PEID-based QSPE (PEID-QSPE).The flash point of PEID-QSPE rises from 25 to 82℃ after gelation,contributing to enhanced safety of the battery at elevated temperatures,whereas the electrochemical window increases to 4.9 ***,the three-dimensional polymer framework of PEID-QSPE is validated to facilitate the uniform growth of the solid electrolyte interphase on the anode,thereby improving the cycling stability of the *** employing PEID-QSPE,the Li|LiNi_(0.9)Co_(0.05)Mn_(0.05)O_(2) cell achieved long-term cycling stability (Coulombic efficiency,99.8%;>200 cycles at 0.1 C) even with a high cathode loading (~5 mg cm^(-2)) and an ultrathin Li(~50μm).This electrolyte is expected to afford inspiring insights for the development of safe and long-term cyclability LMBs.

关键词： Solid-state batteries Lithium metal anodes Quasi-solid polymer electrolytes High flash points Cross-linking polymerization

Precipitation of α_2 Phase in α+β Solution-Treated and Air-cooled Ti-Al-Sn-Zr-Mo-Si-Nd Alloys

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Journal of Materials Science & Technology 2001年第3期17卷 315-317页

作者： jun zhang and dong LI Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China resent address: Shenyang University, Shenyang 110044, China E-mail: zhjun14@*** Chinese Acad Sci Met Res Inst Shenyang 110016 Peoples R China

A series of Ti-Al-Sn-Zr-Mo-Si-Nd alloys with various content of Al were solution treated in α+β phase field and air-cooled. The precipitation of a2 phase in cooling was investigated by transmission electron microscopic analysis The precipitation characteristic of α2 phase was discussed. The precipitation of α2 phase would proceed by the nucleation and growth of α2 phase dependent on the diffusion of Al atoms. And a comparison on the difference of precipitation of α2 phase was carried out under the conditions of air-cooling and quenching in water. The investigation showed that the air-cooling and even quenching could supply enough time for the precipitation and growth of α2 phase when Al content reached a certain value even though far away from the stoichiometric composition of Ti3Al.

关键词： Al Precipitation of Phase in Solution-Treated and Air-cooled Ti-Al-Sn-Zr-Mo-Si-Nd Alloys Ti Mo Sn Zr Nd Si