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Precision storage lifetime measurements of highly charged heavy ions in the CSRe storage ring using a Schottky resonator

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Nuclear Science and Techniques 2025年第1期36卷 150-160页

作者： Qian Wang Xin-Liang Yan guang-Yu Zhu Shahab Sanjari Li-Jun Mao He Zhao Yuri ALitvinov Rui-Jiu Chen Meng Wang Yu-Hu Zhang You-Jin Yuan Jun-Xia Wu Hong-yang Jiao Yue Yu Zu-Yi Chen Yin-Fang Luo Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China GSI Helmholtzzentrum für Schwerionenforschung Planckstrasse 164291 DarmstadtGermany FH Aachen University of Applied Sciences Heinrich-Mussmann-Str.152428 JülichGermany

Schottky mass spectrometry utilizing heavy-ion storage rings is a powerful technique for the precise mass and decay half-life measurements of highly charged *** to the nondestructive ion detection features of Schottky noise detectors,the number of stored ions in the ring is determined by the peak area in the measured revolution frequency *** of their intrinsic amplitude-frequency characteristic(AFC),Schottky detector systems exhibit varying sensitivities at different *** low-energy electron-cooled stored ions,a new method is developed to calibrate the AFC curve of the Schottky detector system of the Experimental Cooler Storage Ring(CSRe)storage ring located in Lanzhou,*** the amplitude-calibrated frequency spectrum,a notable refinement was observed in the precision of both the peak position and peak *** a result,the storage lifetimes of the electron-cooled fully ionized^(56)Fe^(26+)ions were determined with high precision at beam energies of 13.7 and 116.4 MeV/u,despite of frequency drifts during the *** electron cooling was turned off,the effective vacuum condition experienced by the 116.4 MeV/u^(56)Fe^(26+)ions was determined using amplitude-calibrated spectra,revealing a value of 2×10^(−10)mbar,which is consistent with vacuum gauge readings along the CSRe *** method reported herein will be adapted for the next-generation storage ring of the HIAF facility under construction in Huizhou,*** can also be adapted to other storage ring facilities worldwide to improve precision and enhance lifetime measurements using many ions in the ring.

关键词： Lifetime measurement Schottky mass spectrometry Sensitivity response Highly charged heavy ion Resonator UH vacuum Nondestructive diagnostics

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园林排土机钢结构间联结方式的研究

木材加工机械 2016年第6期27卷 28-30页

作者：赵晓丽杨光王彪山西水利职业技术学院太原030024 国家林业局北京林业机械研究所北京100029

运用Pro/E建模建立园林排土机钢结构间联结方式,并通过ANSYS进行有限元仿真,结果显示,该联结方式中最大接触应力发生在钢结构本体和连接板接触面对应位置,而最大等效应力集中于螺栓尾部与钢板联结的最末端。针对此结果本文还提出相应解... 详细信息

运用Pro/E建模建立园林排土机钢结构间联结方式,并通过ANSYS进行有限元仿真,结果显示,该联结方式中最大接触应力发生在钢结构本体和连接板接触面对应位置,而最大等效应力集中于螺栓尾部与钢板联结的最末端。针对此结果本文还提出相应解决方法。

关键词：有限元接触应力等效应力

Contribution of fungal biomass to persistent soil carbon across natural ecosystems

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Science China Earth Sciences 2025年第2期68卷 444-456页

作者： Xiang WANG guang-Hui YU Yakov KUZYAKOV Bo-Hao YIN Andreas KAPPLER Cong-Qiang LIU Bohai Coastal Critical Zone National Observation and Research Station Institute of Surface-Earth System ScienceSchool of Earth System ScienceTianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai RimTianjin UniversityTianjin 300072China Department of Soil Science of Temperate Ecosystems Department of Agricultural Soil ScienceUniversity of GöttingenGöttingen 37077Germany Agro-Technological Institute Peoples Friendship University of Russia(RUDN University)Moscow 117198Russia Geomicrobiology Center for Applied GeosciencesUniversity of TübingenTübingen 72076Germany Cluster of Excellence EXC 2124 Controlling Microbes to Fight InfectionUniversity of TübingenTübingen 72076Germany

Fungi are known to be crucial in the formation and stabilization of soil organic matter through their exudates and dead residues(necromass).Yet,it remains unclear how fungi contribute to the persistence of carbon in soils over millennial scales across ***,this study fills the knowledge gap by linking fungal carbon stocks with minerals-associated carbon stocks across major biomes.A strong correlation between fungal biomass and reactive mineral-associated carbon stocks in soils across six biomes supports the substantial role of fungi in soil carbon persistence at the global *** spatial resolution nanoscale secondary ion mass spectrometry revealed that fungi may stabilize carbon by forming organo-mineral associations through their close physical connection to reactive minerals and weathered *** propose a conceptual model that emphasizes the dualistic role of hypha-mineral interactions:(i)fungi accelerate organic matter decomposition by producing reactive oxygen species on the hypha-mineral interfaces,and(ii)fungi stabilize their residues on mineral surfaces,leading to millennial scale persistence of soil ***,fungi play a fundamental role in ecosystems that extends beyond the decomposition of persistent *** are crucial in stabilizing carbon on mineral surfaces,thereby facilitating the long-term removal of carbon from rapid biotic cycling.

关键词： Biogeography Fungi Mineral-associated organic matter(MAOM) Reactive minerals Soil carbon stability NanoSIMS

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Protein-based functional hydrogel improves cutaneous nerve repair and diabetic wound healing

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Nano Research 2025年第1期18卷 586-596页

作者： Hanzhi Lu Mingrui Cui Yi Wang Xinran Du Xinyi Zhou Yuhan Fang xiaoyan Gao Ying Peng Jianyong Zhu guang yang Fulun Li Department of Dermatology Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai 200437China Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine College of Biological Science and Medical EngineeringDonghua UniversityShanghai 201620China Clinical Laboratory Medicine Center Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai 200437China

Cutaneous nerve regeneration in diabetic wounds remains a challenge for current clinical ***,a natural protein-based functional hydrogel is developed using keratin as the sole matrix,and protocatechuic aldehyde(PA)and zinc ions as the building blocks through dual-dynamic crosslinking reactions of thiol-aldehyde addition and catecholzinc ions *** unique structural design endows the hydrogel with excellent injectability,skin adhesion,self-healing and antibacterial ability,and *** addition,this hydrogel acts as a drug carrier for the loading and sustained release of phellopterin(PP),a natural compound extracted from traditional Chinese medicine Angelica *** findings demonstrate that the PP-loaded hydrogel promotes cutaneous nerve regeneration,angiogenesis and tissue remodeling in the full-thickness wounds in both db/db and streptozotocin-induced C57BL/6 diabetic mice,notably by the synergistic effect of zinc ions and PP,showing a great potential in diabetic wound therapy.

关键词： functional hydrogel cutaneous nerve regeneration dynamic crosslinking diabetic wounds

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考虑更新频率等因素的物化视图有效更新算法

计算机科学 2003年第12期30卷 86-88页

作者：王新军洪晓光王海洋山东大学计算机科学与技术学院济南250100

1.引言物化视图的维护是数据仓库研究的一个重要问题,特别是对定义在多个远端数据源上的物化视图,如何保证当数据源发生变化时物化视图的内容与数据源的内容达到某种程度的一致.

关键词：数据仓库数据源物化视图有效更新算法频率更新数据库

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旺起林场药用植物资源的开发与利用

吉林林业科技 2000年第4期29卷 60-62页

作者：崔月升路森杨晓光杨景隆吉林市丰满区国有旺起林场吉林吉林132200

通过对该区的药用植物资源调查 ,明确了旺起林场药用植物资源的现状和种数 ,发现有些名贵药材已无药可采 ,有些濒临灭绝。

关键词：药用植物资源旺起林场开发利用

Health risks of rare earth elements exposure:Impact on mitochondrial DNA copy number and micronucleus frequency

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Journal of Environmental Sciences 2025年第5期151卷 150-160页

作者： Shiyi Hong Yali Zhang Qiaojian Zhang Zekang Su Guiping Hu Li Wang Shanfa Yu xiaojun Zhu guang Jia Department of Occupational and Environmental Health Sciences School of Public HealthPeking UniversityBeijing 100083China School of Engineering Medicine and Beijing Advanced Innovation Center for Big Data-Based Precision Medicine Beihang UniversityBeijing 100083China Department of Toxicology School of Public HealthBaotou Medical CollegeBaotouInner Mongolia 014040China Henan Institute for Occupational Medicine Zhengzhou 450052China National Center for Occupational Safety and Health Beijing 102308China Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety School of Public HealthPeking UniversityBeijing 100083China

Toxic effects in terms of mitochondria and hereditary substances have been characterized in vitro for individual rare earth elements,while,the joint effects of mixed elements exposure in the population remain *** on the Occupational Chromate Exposure Dynamic Cohort of China,this study investigated the relationship between 15 blood rare earth elements(cerium,dysprosium,erbium,europium,gadolinium,holmium,lanthanum,lutetium,neodymium,praseodymium,samarium,terbium,thulium,yttrium,and ytterbium)and mitochondrial DNA copy number(MtDNACN)as well as peripheral blood lymphocyte micronucleus frequency(MNF).The elastic net was used to select elements highly correlated with effect indicators,whose dose-response relationships were further illustrated by restricted cubic *** kernel regressionwas employed to explore the combined effects of elements and the contributions of single *** results showed that most rare earth elementswere positively correlatedwith effect indicators,with yttrium showing the strongest association(β(95%CI):0.139(0.1089–0.189)for MtDNACN,0.937(0.345–1.684)for MNF).In the mixed exposure model,with the exposure level fixed at the 50th percentile as the reference,the effect estimates on MtDNACN and MNF increased by 0.228 and 0.598 units,respectively,at the 75th *** single effect analysis implied that yttrium,lanthanum and terbium contributed the most to the elevation of MtDNACN,while yttrium posed the highest risk for genetic damage,accordingly,we provided recommendations to prioritize these elements of *** addition,we observed a chief mediating effect of MtDNACN on the elevation of MNF caused by lanthanum,whereas further mechanistic exploration is required to confirm this finding.

关键词： Rare earth elements Mitochondrial DNA copy number Micronucleus frequency Mixed effect

Mitochondrial transplantation:a promising strategy for the treatment of retinal degenerative diseases

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Neural Regeneration Research 2025年第12期20卷 3370-3387页

作者： Jing Chi Bin Fan Yulin Li Qing Jiao guang-Yu Li Department of Ophthalmology The Second Norman Bethune Hospital of Jilin UniversityChangchunJilin ProvinceChina

The retina,a crucial neural tissue,is responsible for transforming light signals into visual information,a process that necessitates a significant amount of ***,the primary powerhouses of the cell,play an integral role in retinal physiology by fulfilling the high-energy requirements of photoreceptors and secondary neurons through oxidative *** a healthy state,mitochondria ensure proper visual function by facilitating efficient conversion and transduction of visual ***,in retinal degenerative diseases,mitochondrial dysfunction significantly contributes to disease progression,involving a decline in membrane potential,the occurrence of DNA mutations,increased oxidative stress,and imbalances in quality-control *** abnormalities lead to an inadequate energy supply,the exacerbation of oxidative damage,and the activation of cell death pathways,ultimately resulting in neuronal injury and dysfunction in the *** transplantation has emerged as a promising strategy for addressing these *** procedure aims to restore metabolic activity and function in compromised cells through the introduction of healthy mitochondria,thereby enhancing the cellular energy production capacity and offering new strategies for the treatment of retinal degenerative *** mitochondrial transplantation presents operational and safety challenges that require further investigation,it has demonstrated potential for reviving the vitality of retinal *** review offers a comprehensive examination of the principles and techniques underlying mitochondrial transplantation and its prospects for application in retinal degenerative diseases,while also delving into the associated technical and safety challenges,thereby providing references and insights for future research and treatment.

关键词： age-related macular degeneration Leber’s hereditary optic neuropathy mitochondrial transfer mitochondrial transplantation retinal degenerative diseases

Crevice corrosion of reinforcing steel in carbonated simulated concrete pore solutions contaminated by chloride

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Journal of Iron and Steel Research International 2025年第1期32卷 293-311页

作者： Peng-peng Wu Yuan-pei Gong Shao-hua Zhang Yue-zhong Zhang Bao-sheng Liu guang-ling Song College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan030024ShanxiChina College of Chemical Engineering and Technology Taiyuan University of Science and TechnologyTaiyuan030024ShanxiChina Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen518055GuangdongChina School of Mechanical and Mining Engineering Centre for Advanced Materials Processing and Manufacturing(AMPAM)The University of QueenslandSt LuciaQLD4072Australia State Key Laboratory of Physical Chemistry of Solid Surfaces Xiamen UniversityXiamen361005FujianChina

The crevice corrosion of the reinforcing steel in the carbonated simulated concrete pore solutions(SCPSs)containing 0.04 mol/L chloride was *** comparison,the steel without crevice covered on its surface was also *** showed that the crevice corrosion in the uncarbonated SCPS was not triggered and the steel remained passivity by suppressing the anodic dissolution in the crevice *** SCPS was carbonated to have pH values of 10.5 and 11.5,the crevice corrosion was easier to be activated than the widely reported pitting corrosion owing to the rapid oxygen depletion within the crevice,but the crevice corrosion damage might be alleviated to a certain extent due to the relative compact surface film formed inside the *** further carbonation led to the activation dissolution of both the crevice interior and exterior,causing the more serious corrosion *** process of the crevice corrosion was systematically analyzed by combining the electrochemical measurement results and Evens polarization diagram.

关键词： Crevice corrosion Reinforcing steel Carbonation Electrochemical test Rust Evens polarization diagram