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Effect of grain size on fatigue cracking at twin boundaries in a CoCrFeMnNi high-entropy alloy

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journal of Materials Science & Technology 2020年第4期39卷 1-6页

作者： A.G.Wang X.H.An j.gu X.G.Wang L.L.Li W.L.Li M.Song Q.Q.Duan Z.F.Zhang X.Z.Liao School of Aerospace Mechanical&Mechatronic EngineeringThe University of Sydne0ySydneyAustralia State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Materials Fatigue and Fracture Division Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Max-Planck-Institut für Eisenforschung Max-Planck-Stra?e 140237 DüsseldorfGermany

The fatigue cracking behavior at twin boundaries(TBs)in a Co Cr Fe Mn Ni high-entropy alloy with three different grain sizes was systematically investigated under low-cycle *** of grain size,the change from slip band cracking to TB cracking occurred with increasing the difference in the Schmid factors(DSF)between matrix and ***,the required critical DSF for the transition of the dominant cracking mode decreases with decreasing grain size due to the reduced slip band spacing that increases the impingement sites on the TBs and facilitates the coalescence of defects and voids to initiate TB cracks.

关键词： High-entropy alloy Fatigue cracking Twin boundary Slip band Grain size

A single-longitudinal-mode optical parametric oscillator for high resolution spectroscopy of free radicals

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A single-longitudinal-mode optical parametric oscillator for...

乳腺上皮细胞免疫能力评价:比较大肠杆菌感染后的乳腺组织

第十五届全国化学动力学会议

作者：张强 D.Zhang B.Zhu j.gu D.Zhao Y.Chen Hefei National Laboratory for Physical Sciences at the Microscale Department of Chemical PhysicsUniversity of Science and Technology of China

We present the development of a tunable,narrow-bandwidth optical parametric oscillator(OPO) system and its applications in high resolution spectroscopy of free *** OPO system employs a bulk KTP crystal as the nonlinear optical material and a compact grazing-incidence-grating cavity as the *** second harmonic output of an injection-seeded nanosecond Nd:YAG laser with a spatially optimized beam profile is used to pump the OPO *** OPO cavity length is precisely controlled by monitoring both the beam position and the mode structure of the signal output,ensuring a stable single-longitudinal-mode operation of the system with a broad tuning *** output of the OPO covers a tunable wavelength of 660 to 2700 nm,with a typical pulse duration of ns,a FT-limited bandwidth 50 MHz,and a total pulsed energy of .5 mj at a pump energy of 40 *** newly developed OPO system has been applied to the laser induced fluorescence study on high resolution electronic spectra of CuSH and YO in a supersonic jet *** frequency doubling of the signal output,fully resolved spectra of the CuSH B A’-X A’ and the YO D Σ-X Σ electronic transition bands has been recorded for the first time.

关键词： OPO narrow-bandwidth high resolution spectroscopy

来源： cnki会议评论

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中国畜牧兽医 2009年第7期36卷 8-8页

作者： Nther j.gu 胡菡

研究检测了调控奶牛乳腺上皮细胞(MEC)体外模型中炎症及与炎症相关的基因功能,为研究乳腺上皮细胞在奶牛乳腺免疫防御中所起的作用提供基础。本研究取热灭活大肠杆菌(***)感染奶牛的乳腺上皮细胞进行原代培养,使用AffymetrixDNA芯片检... 详细信息

研究检测了调控奶牛乳腺上皮细胞(MEC)体外模型中炎症及与炎症相关的基因功能,为研究乳腺上皮细胞在奶牛乳腺免疫防御中所起的作用提供基础。本研究取热灭活大肠杆菌(***)感染奶牛的乳腺上皮细胞进行原代培养,使用AffymetrixDNA芯片检测这些相关基因的转录变化。与乳房炎结果相比较,大肠杆菌(***)感染奶牛MEC的几乎所有的编码炎症趋化因子、白细胞介素、β-防御素、血清淀粉样蛋白A和触珠蛋白相关的基因被显著激活。由此可知,MEC与先天免疫防御受体一样,发挥着哨兵的作用。***激活了MEC中属于发挥炎症反应功能的30%的基因,这一数量大于同用芯片检测的乳房炎基因结果(17%)。这一发现进一步证实了MEC具有强的免疫能力。为了更加准确的检测MEC的免疫调节能力,研究比较了奶牛乳腺和MEC补体系统因子的炎症依赖调控。在MEC结果中,发现仅个别补体因子编码基因发生了上调。而乳房炎结果中,与经典补体激活通路和补体膜攻击复合物相关的这些编码基因发生了强烈上调,且其中一条通路的因子表达可能被增强。这一对复杂补体通路的机能极化调控,在MEC模型中没有反应。

关键词：乳房炎转录分析免疫能力乳腺上皮细胞

Design of a cationic accelerator enabling ultrafast ion diffusion kinetics in aqueous zinc-ion batteries

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journal of Energy Chemistry 2025年第1期100卷 377-384页

作者： Yawei Xiao Qianqian gu Haoyu Li Mengyao Li Yude Wang National Center for International Research on Photoelectric and Energy Materials School of Materials and Energy Yunnan University Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources School of Chemistry and Chemical Engineering Hainan University College of Chemical Engineering Fuzhou University Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies Yunnan University

Aqueous zinc-ion batteries are highly favored for grid-level energy storage owing to their low cost and high safety,but their practical application is limited by slow ion *** address this,a strategy has been developed to create a cation-accelerating electric field on the surface of the cathode to achieve ultrafast Zn2+diffusion *** employing electrodeposition to coat MoS2on the surface of BaV6O16·3H2O nanowires,the directional built-in electric field generated at the heterointerface acts as a cation accelerator,continuously accelerating Zn2+diffusion into the active *** optimized Zn2+diffusion coefficient in CC@BaV-6O16·3H2O@MoS2(7.5×10～8cm2s-1) surpasses that of most reported V-based ***,MoS2serving as a cathodic armor extends the cycling life of the Zn-CC@BaV6O16·3H2O@MoS2full batteries to over 10000 *** work provides valuable insights into optimizing ion diffusion kinetics for high-performance energy storage devices.

关键词： Internal electric field Cationic accelerator Ion diffusion kinetics Cathode modification strategy Aqueous zinc ion battery

Fluorinated poly(p-triphenylene isatin) anion exchange membranes based on hydrophilic hydroxyl side chain modulation for fuel cells

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journal of Energy Chemistry 2025年第1期100卷 702-709页

作者： Yiman gu Yanchao Zhang Zhanyu Li Yijia Lei Baozeng Sun Xiaoyu Yu Zhe Wang College of Chemistry and Life Science Changchun University of Technology College of Chemical Engineering Changchun University of Technology School of Materials Science and Engineering Changchun University of Technology Key Laboratory of Advanced Functional Polymer Membrane Materials of jilin Province

The development of alkaline fuel cells is moving forward at an accelerated pace,and the application of ether-free bonded polymers to anion exchange membranes （AEMs） has been widely ***,the question of the“trade-off”between AEM ionic conductivity and dimensional stability remains *** strategy of inducing microphase separation to improve the performance of AEM has attracted much attention recently,but the design of optimal molecular structures is still being ***,this work introduced different ratios of 3-bromo-1,1,1-trifluoroacetone （x=40,50,and 60） into the main chain of poly（p-terphenylene isatin）.Because fluorinated groups have excellent hydrophobicity,hydrophilic hydroxyl-containing side chains are introduced to jointly adjust the formation of phase separation *** results show that PTI-PTF50-NOH AEM with the appropriate fluorinated group ratio has the best ionic conductivity and alkali stability under the combined effect of *** has an ionic conductivity of 133.83 mS cm-1at 80°*** addition,the OH-conductivity remains at 89%of the initial value at 80°C and 3 M KOH for 1056 h of *** cell polarization curve based on PTI-PTF50-NOH shows a power density of 734.76 mW cm-2at a current density of 1807.7 mA cm-2.

关键词： Anion exchange membranes Poly(p-terphenylene isatin) Hydrophilic-hydrophobic phase separation Fluorinated group

Boosting hydrocarbon conversion via Cu-doping induced oxygen vacancies on CeO2 in CO2 electroreduction

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journal of Energy Chemistry 2025年第1期100卷 66-76页

作者： Lei Xue Tong Shi Chenhui Han Heng Zhang Fenrong Liu Haorun Li Yan Wang Xiaojun gu Shanghong Zeng Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials School of Chemistry and Chemical Engineering Inner Mongolia University State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Institute of Catalysis Department of Chemistry Zhejiang University National Key Laboratory of Baiyunobo Rare Earth Resource Research and Comprehensive Utilization Baotou Research Institute of Rare Earths

Conversion of CO2back to hydrocarbons is the most direct way of closing the“carbon cycle”,and its significance is further enlarged if this process is driven by renewable energies such as ***,precisely controlling the product selectivity towards hydrocarbons against the competitive hydrogen evolution remains challenging,especially for Cu-based ***,we report a novel defect engineering strategy,by which Cu-doping-induced oxygen vacancies on CeO2nanorods were effectively created,with adjustable vacancy/Cu *** resulting optimum catalyst shows up to 79% catalytic current density to hydrocarbons （excluding CO）,with 49% faradaic efficiency to *** and density functional theory unveil that the ratio between oxygen vacancy and Cu affects significantly the formation of*CHO and activation of H2O,which leads to the following deep hydrogenation to *** findings may spur new insights for designing and developing more controllable chemical process relevant to CO2utilization.

关键词： Oxygen vacancy Hydrocarbon production Reaction mechanism

Single-cell omics: experimental workflow, data analyses and applications

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Science China Life Sciences 2025年第1期68卷 5-102页

作者： Fengying Sun Haoyan Li Dongqing Sun Shaliu Fu Lei gu Xin Shao Qinqin Wang Xin Dong Bin Duan Feiyang Xing jun Wu Minmin Xiao Fangqing Zhao jing-Dong j.Han Qi Liu Xiaohui Fan Chen Li Chenfei Wang Tieliu Shi Department of Clinical Laboratory the Affiliated Wuhu Hospital of East China Normal University (The Second People's Hospital of Wuhu City) Pharmaceutical Informatics Institute College of Pharmaceutical SciencesZhejiang University Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration (Tongji University) Ministry of EducationOrthopaedic DepartmentTongji HospitalBioinformatics DepartmentSchool of Life Sciences and TechnologyTongji University Frontier Science Center for Stem Cells School of Life Sciences and TechnologyTongji University Translational Medical Center for Stem Cell Therapy and Institute for Regenerative Medicine Shanghai East HospitalBioinformatics DepartmentSchool of Life Sciences and TechnologyTongji University Research Institute of Intelligent Computing Zhejiang Lab Shanghai Research Institute for Intelligent Autonomous Systems Center for Single-cell Omics School of Public HealthShanghai Jiao Tong University School of Medicine National Key Laboratory of Chinese Medicine Modernization Innovation Center of Yangtze River DeltaZhejiang University Center for Bioinformatics and Computational Biology Shanghai Key Laboratory of Regulatory Biologythe Institute of Biomedical Sciences and School of Life SciencesEast China Normal University Beijing Institutes of Life Science Chinese Academy of Sciences Peking-Tsinghua Center for Life Sciences Academy for Advanced Interdisciplinary StudiesCenter for Quantitative Biology (CQB)Peking University Zhejiang Key Laboratory of Precision Diagnosis and Therapy for Major Gynecological Diseases Women's HospitalZhejiang University School of Medicine Key Laboratory of Advanced Theory and Application in Statistics and Data Science-MOE School of StatisticsEast China Normal University

Cells are the fundamental units of biological systems and exhibit unique development trajectories and molecular features. Our exploration of how the genomes orchestrate the formation and maintenance of each cell, and control the cellular phenotypes of various organismsis, is both captivating and intricate. Since the inception of the first single-cell RNA technology, technologies related to single-cell sequencing have experienced rapid advancements in recent years. These technologies have expanded horizontally to include single-cell genome, epigenome,proteome, and metabolome, while vertically, they have progressed to integrate multiple omics data and incorporate additional information such as spatial sc RNA-seq and CRISPR screening. Single-cell omics represent a groundbreaking advancement in the biomedical field,offering profound insights into the understanding of complex diseases, including cancers. Here, we comprehensively summarize recent advances in single-cell omics technologies, with a specific focus on the methodology section. This overview aims to guide researchers in selecting appropriate methods for single-cell sequencing and related data analysis.

关键词： single-cell sequencing genome epigenome proteomics metabolomics multimodal spatial transcriptomics CRISPR screening

320层CT对比剂单次注射方案在颈动脉及冠状动脉成像的可行性研究

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国际医学放射学杂志 2014年第5期 496-496页

作者： W.Zhang H.jin G.Chen W.Chen j.gu M.Zengs 袁磊 Department of Radiology the First Affiliated Hospital of Soochow University

摘要目的研究采用对比剂单次注射方案对颈动脉及冠状动脉行 320 层 CT 血管成像(CTA)的可行性。方法采用原创的 CTA 扫描方案对 82 例可疑颈动脉疾病的病人进行

关键词：冠状动脉成像颈动脉对比剂单次 CT

P3: An installation for high-energy density plasma physics and ultra-high intensity laserematter interaction at ELI-Beamlines

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Matter and Radiation at Extremes 2017年第4期2卷 149-176页

作者： S.Weber S.Bechet S.Borneis L.Brabec M.Bucka E.Chacon-Golcher M.Ciappina M.DeMarco A.Fajstavr K.Falk E.-R.Garcia j.Grosz Y.-j.gu j.-C.Hernandez M.Holec P.janecka M.jantac M.jirka H.Kadlecova D.Khikhlukha O.Klimo G.Korn D.Kramer D.Kumar T.Lastovicka P.Lutoslawski L.Morejon V.Olsovcova M.Rajdl O.Renner B.Rus S.Singh M.Smid M.Sokol R.Versaci R.Vrana M.Vranic j.Vyskocil A.Wolf Q.Yu ELI-Beamlines Institute of PhysicsAcademy of Sciences of the Czech Republic18221 PragueCzech Republic

ELI-Beamlines(ELI-BL),one of the three pillars of the Extreme Light Infrastructure endeavour,will be in a unique position to perform research in high-energy-density-physics(HEDP),plasma physics and ultra-high intensity(UHI)ð>10^(22) W=cm^(2)) lasereplasma *** the need for HED laboratory physics was identified and the P3(plasma physics platform)installation under construction in ELI-BL will be an *** ELI-BL 10 PW laser makes possible fundamental research topics from high-field physics to new extreme states of matter such as radiation-dominated ones,high-pressure quantum ones,warm dense matter(WDM)and ultra-relativistic *** is of fundamental importance for research in the field of laboratory astrophysics and inertial confinement fusion(ICF).Reaching such extreme states of matter now and in the future will depend on the use of plasma optics for amplifying and focusing laser *** article will present the relevant technological infrastructure being built in ELI-BL for HEDP and UHI,and gives a brief overview of some research under way in the field of UHI,laboratory astrophysics,ICF,WDM,and plasma optics.

关键词： High-energy-density-physics Ultra-high-intensity Warm dense matter Laboratory astrophysics High repetition rate lasers Plasma optics Inertial confinement fusion Lasereplasma interaction Relativistic plasmas