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Porous hexagonal Mn_(5)O_(8)nanosheets as fast-charging anode materials for lithium-ion batteries

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Journal of Advanced Ceramics 2024年第10期13卷 1635-1642页

作者： Xinchi Zhou Zhen Zhang Xinyu jiang Suchong Tan Zhengdao Pan Xingyou Rao Yutong Wu Zhoulu Wang Xiang Liu jian gu Yi Zhang Shan jiang School of Energy Sciences and Engineering Nanjing Tech UniversityNanjing 211816China College of Materials Science and Engineering Nanjing Tech UniversityNanjing 211816China Hangzhou Institute of Technology Xidian UniversityHangzhou 311200China jianghuai Advance Technology Center Hefei 230000China

Among various metal oxide nanomaterials,manganese oxides,which can exist in different structures and valence states,are considered highly promising anode materials for lithium-ion batteries(LIBs).However,conventional manganese oxides,such as MnO and MnO2,face significant challenges during cycling ***,poor electronic conductivity and large volume changes result in low specific capacity during high current charging and discharging,as well as poor fast-charging *** work presents an approach to synthesizing porous hexagonal Mn_(5)O_(8)nanosheets via hydrothermal and annealing methods and applies them as anode materials for *** Mn_(5)O_(8)nanomaterials exhibit a thin plate morphology,which effectively reduces the distance for ion/electron transmission and mitigates the phenomenon of volume ***,the large pore size of Mn_(5)O_(8)results in abundant interlayer and intralayer defects,which further increase the rate of ion *** unique characteristics enable Mn_(5)O_(8)to demonstrate excellent electrochemical performance(938.7 mAh·g^(-1)after 100 cycles at 100 mA·g^(-1))and fast charging performance(675.7 mAh·g^(-1)after 1000 cycles at 3000 mA·g^(-1)),suggesting that Mn_(5)O_(8)nanosheets have the potential to be an ideal fast-charging anode material for LIBs.

关键词： Mn_(5)O_(8) lithium-ion batteries(LIBs) anode fast-charging

Single Electron Capture for Ce^(+)and Ho^(+)in H_(2)

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Chinese Physics Letters 1995年第1期12卷 16-18页

作者： WU Weimin gu jian WU Songmao LU Fuquan YANG Fujia t.4.lee physics laboratory&nuclear science department fudan university shanghai 200433 forward corp.fellow

The single-electron capture cross sections for the impact of rare-earth ions Ce^(+),Ho^(+)on H_(2)are measured in the energy range 3-8keV by'growth rate'*** measurement also reveals that the incident ions are predomin... 详细信息

关键词： method. state. Electron

Strategic insights into the cultivation of pancreatic cancer organoids from endoscopic ultrasonography-guided biopsy tissue

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World Journal of Gastroenterology 2024年第42期30卷 4532-4543页

作者： Jia-Li Yang Jun-Feng Zhang jian-You gu Mei Gao Ming-You Zheng Shi-Xiang guo Tao Zhang Institute of Hepatopancreatobiliary Surgery Chongqing General HospitalChongqing UniversityChongqing 401147China

BACKGROUND The frequent suboptimal efficacy of endoscopic ultrasound-guided fine-needle biopsy(EUS-FNB)to culture pancreatic cancer(PC)organoids(PCOs)poses a major challenge in the advancement of personalized medicine for advanced *** To explore how to obtain appropriate puncture tissues from EUS-FNB and optimize the strategy for efficiently constructing PCOs,providing an efficient tool for the advancement of personalized *** Patients who underwent EUS-FNB for the diagnosis of PC tissue were prospectively *** refined the endoscopic biopsy procedures and organoid cultivation *** tissue specimens verified by on-site pathological assessment were cultured in a semi-suspended medium in a microfluidic *** assessed differences in PCOs cultured beyond and below five generations examining patient demographics,specimen and organoid attributes,and the sensitivity of organoids to a panel of clinical drugs through cell viability *** In this study,16 patients with PC were recruited,one sample was excluded because onsite cytopathology showed no tumor *** organoid generation occurred in 93.3%(14 of 15)of the EUS-FNB specimens,with 60%(9 of 15)sustaining over five *** these patients,those with a history of diabetes,familial cancer,or larger tumors exhibited enhanced PCO *** key factors influencing longterm PCOs expansion included initial needle sample quality(P=0.005),rapid initiation of organoid culture postisolation(P≤0.001),and high organoid activity(P=0.031).Drug sensitivity analysis revealed a partial response in two patients following therapeutic intervention and surgery and stable disease in four patients,indicating a moderate correlation between organoid response and clinical *** Optimal initial needle sampling,rapid and precise biopsy sample processing,process isolated samples as soon as possible,and sufficient cellular material are crucial for successful cultiv

关键词： Endoscopic ultrasound-guided fine-needle biopsy Pancreatic cancer organoid Puncture technique Cultivation optimization strategy Drug screening

KINETIC STUDY ON THE EXTRACTION OF PALLADIUM(Ⅱ) WITH BIS(2-ETHYLHEXYL)SULFIDE

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Chinese Chemical Letters 1992年第6期3卷 463-464页

作者： jian Sheng gu jian Hua PAN Han Zhang WANG Department of Chemistry, Suzhou University, Suzhou, 215006

The effects of concentration, temperature, stirring rate and specific interfacial area on the extraction of Pd (Ⅱ) with bis(2--ethylhexyl) sulfide (DEHS) were studied by the use of a constant interracial area cell. T... 详细信息

关键词： WITH BIS ETHYLHEXYL)SULFIDE KINETIC STUDY ON THE EXTRACTION OF PALLADIUM

Yrast Properties of Dysprosium Isotopes in the Double Mid-Shell Region

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Chinese Physics Letters 2010年第1期27卷 78-81页

作者：邹文华顾建中 School of Nuclear Engineering and Technology East China Institute of Technology Fuzhou 344000 China Institute of Atomic Energy PO Box 275(18) Beijing 102413 Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou 730000

The yrast bands of the even-even dysprosium isotopes 164-174Dy are calculated up to high angular momentum 34h based on the projected shell model. Our calculations are in good agreement with the experiments quantitatively. They predict that an energy minimum of the first 2＋ state in these isotopes exists around the neutron mid-shell N=104, implying the maximum collectivity in 66170Dy104, however, the energy ratio R4=E（4＋1）/E（2＋1） reaches a saturation at N=102. Meanwhile, the back-bending plots of these yrast bands are examined carefully. It is found that the sharpness of the back-bending has a gradual shift along the dysprosium isotopic chain, namely, the slope of the back-bending becomes steeper as the neutron number increases except for an irregularity of a decreasing dip angle in the double mid-shell nucleus 170Dy. We suggest that 170Dy undergoes a dual alignment with midshell high-j protons and neutrons aligning simultaneously at spin I≈16h, which probably results in the distinctive back-bending behavior.

关键词： DYSPROSIUM ISOTOPES ANguLAR momentum (Nuclear physics) ENERGY levels (Quantum mechanics) NEUTRONS NUCLEAR models

Synthesis of Substituted Indolizines via Radical Oxidative Decarboxylative Annulation of 2 (Pyridin-2-yl)acetate Derivatives withα,β-Unsaturated Carboxylic Acids

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Synthesis of Substituted Indolizines via Radical Oxidative D...

Temperature-dependent tensile properties of ultrafine-grained C-doped CoCrFeMnNi high-entropy alloy

2016年全国功能精细化学品绿色制造及应用技术交流会

作者： jian gu Chun Cai Chemical Engineering College Nanjing University of Science and Technology

A copper mediated radical oxidative annulation of 2-(pyridin-2-yl)acetate derivatives with α,β-unsaturated carboxylic acids is *** study offers a new and expedient strategy for synthesis of

关键词： Indolizines Decarboxylative Radical Oxidative Annulation

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Rare Metals 2022年第8期41卷 2877-2885页

作者： Yan-Zhong Tian Si-Yuan Peng Shang-Feng Chen Zi-jian gu Yang Yang Xiu-Ling Shang guan-Yu Deng Li-Hong Su Shi-Jie Sun Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang110819China Innovation Center of GD Midea Air-Conditioning Equipment Co. LtdFoshan528311China School of Mechanical MaterialsMechatronic and Biomedical EngineeringUniversity of WollongongWollongongNSW2500Australia Institute of Metal Research Chinese Academy of SciencesShenyang110016China

Metallic materials can be strengthened by various kinds of plastic deformation ***,the deformed materials suffer poor ductility and thermal stability due to the high-density *** this work,we prepared fully recrystallized ultrafine-grained(UFG)1%CCoCrFeMnNi high-entropy alloy(C-HEA)through cold rolling and annealing ***-static tensile tests were performed at temperatures between 77 and 823 *** micros true tures of the samples after tensile tests were characterized,and deformation mechanisms were *** is a transition of deformation mechanisms from twinning and dislocation slip to dislocation slip and grain boundary sliding with temperature *** UFG C-HEA exhibits balanced strength and ductility from the cryogenic temperature to high temperatures,indicating highly adaptive microstructure and mechanical *** strength and uniform elongation of the UFG C-HEA decrease monotonously with temperature increasing,but the elongation to failure exhibits the lowest value at the medium *** grain boundary sliding is supposed to assist the unconventionally high elongation at 823 K.

关键词： High-entropy alloy Temperature Ductility Strength Ultrafine grain

Positive Regulation of Phytochrome B on Chlorophyll Biosynthesis and Chloroplast Development in Rice

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Rice science 2013年第4期20卷 243-248页

作者： ZHAO Jie ZHOU Jin-jun WANG Ying-ying gu jian-wei XIE Xian-zhi Shandong Rice Research Institute College of Life Sciences Shandong Normal University

Phytochromes in rice are encoded by a gene family composed of three members, PHYA, PHYB, and PHYC. Through characterizing the phytochrome mutants and wild type （WT） in terms of photomorphogenesis, roles of individual phytochromes have been preliminarily explored in regulating rice de-etiolation, flowering time and fertility. However, little information has been reported about whether or how phytochromes affect chlorophyll biosynthesis and chloroplast development in rice. In this study, we compared the chlorophyll contents of wild type and the phyA, phyB and phyAphyB mutants grown under either white light （WL） or red light （R）. The results suggest that phyB perceives R to positively regulate chlorophyll biosynthesis, while the role of phyA can be detected only in the phyB-deficient mutant. Analyses of the expression levels of genes involved in chlorophyll biosynthesis revealed that phytochromes affected the chlorophyll biosynthesis by regulating protochlorophyll oxidoreductase A （PORA） expression. The role of phyB in chloroplast development was also analyzed, and the results suggest that phyB perceives R to regulate chloroplast development by affecting the numbers of chloroplasts and grana, as well as the chloroplast membrane system.

关键词： rice -phytochrome chlorophyll biosynthesis protochlorophyll oxidoreductase A chloroplastdevelopment

Human CD39hi regulatory T cells present stronger stability and function under inflammatory conditions

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Cellular & Molecular Immunology 2017年第6期14卷 521-528页

作者： jian gu Xuhao Ni Xiongxiong Pan Hao Lu Yunjie Lu Jie Zhao Song guo Zheng Keli L Hippen Xuehao Wang Ling Lu Translational Medicine Research Center Affiliated Jiangning Hospital and Liver Transplantation Center First Affiliated Hospital Nanjing Medical University Nanjing 210029 China University of Minnesota Cancer Center and Division of Bone Marrow Transplantation Department of Pediatrics University of Minnesota Minneapolis MN 55455 USA Division of Rheumatology Penn State Milton S. Hershey Medical Center Hershey PA 17033 USA

Autoimmune diseases are characterized by an imbalance between regulatory T cells and effector T-cell subsets, such as Thl and Th17 cells. Studies have confirmed that natural CD4＋Foxp3＋ Tregs were unstable and dysfunctional in the presence of pro-inflammatory cytokines. In the current study, human CD39hi Tregs and CD39low Tregs were sorted from Tregs in vitro after 7 days of expansion. The functions of both Treg subsets were investigated under inflammatory conditions in vitro and in vivo. In the presence of IL-1β and IL-6, cultured CD4＋CD39hi Tregs maintained stable forkhead box protein 3 expression, whereas CD4＋CD39low Tregs lost Foxp3 expression and trans-differentiated into Thl or Th17 cells. Decreased IL-1βR and IL-6R expression on the CD39hi Tregs was the primary mechanism responsible for Treg stability. In addition, reduced activation of downstream molecules, such as STAT1 and STAT3, through the modulation of CpG demethylation played an important role. Finally, human CD4＋CD39hi Tregs but not CD4＋CD39low Tregs protected against xenograft versus host disease in model mice. These results strongly implied the physiological importance of CD39 expression and suggested that manipulation of CD39hi Tregs might represent a novel strategy for the treatment of autoimmune diseases.

关键词： CD39 stability Tregs xeno-GVHD