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Geroprotection from ergothioneine treatment in Drosophila melanogaster by improving intestinal barrier and activation of intestinal autophagy

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Food Science and Human Wellness 2024年第6期13卷 3434-3446页

作者： Hongyu Pan Qianwang Zheng Yuan Zou guozhao luo Mingzhen Tu Na Wang Jingru Zhong Liqiong Guo Junfang Lin College of Food Science South China Agricultural UniversityGuangzhou 510640China Faculty of Food Science and Engineering Kunming University of Science and TechnologyKunming 650500China Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province Guangzhou 510640China Guangzhou Alchemy Biotechnology Co. Ltd.Guangzhou 510760China

Ergothioneine is a natural amino acid with powerful antioxidant *** studies have demonstrated that ergothioneine can increase the lifespan of Drosophila melanogaster and Caenorhabditis elegans,and enhance telomerase *** present study,the metagenomics sequencing and quantitative real-time polymerase chain reaction analysis were employed to characterize the composition and diversity of gut microbiome in aging *** the alterations in the gut barrier,gut morphology,and other gut physiological indicators of aging flies were ***,the results showed that ergothioneine induced little variations in gut microbiota composition in flies at mid-life,and significant alterations in the gut microbiota populations were only observed in flies at *** ergothioneine attenuated age-related gut injuries,including decreasing reactive oxygen species levels in intestinal enterocytes,reduction of intestinal cells death,and preservation of gut integrity in aging *** also improved the gut morphology by preserving the structure and shape of cell organelles and inducing the intestinal *** activation of intestinal autophagy also contributed to the longevity effect mediated by ergothioneine in an unidentified mechanism.

关键词： Ergothioneine Gut microbiota Intestinal autophagy Intestinal barrier Drosophila melanogaster

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Interfacial Zn2+-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao Zhou Xiongbin luo Hang Li Shan Guo Zhuang Tong Xiaotao Zhou Xu Li Zhaohui Hou Shuquan Liang guozhao Fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and Technology School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University College of Materials and Metallurgy Guizhou University National Energy Metal Resources and New Materials Key Laboratory Central South University

Aqueous zinc-ion batteries （AZIBs） are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc （Zn） deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn2+-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups （such as hydroxyl,carboxyl,etc.） have the potential to significantly optimize the solvation structure of Zn2+and regulate the interfacial electric double layer （EDL）.By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn （H-Zn） anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH4V4O10（NVO） full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A *** study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Solvation

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临近地铁及110 kV电缆通道保护区围护桩施工技术

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云南水力发电 2024年第10期40卷 46-50页

作者：耿军罗国昭王平峰中国水利水电第十四工程局有限公司云南昆明650041

主要基于杭州市某市政公路工程实例对临近地铁段、临近110 kV电缆通道保护区围护桩施工技术进行总结,针对复杂的周边环境,地基承载力弱,与地铁隧道和110 kV电缆保护区距离较近等问题,提供了一种临近地铁及110 kV电缆通道保护区围护桩施... 详细信息

主要基于杭州市某市政公路工程实例对临近地铁段、临近110 kV电缆通道保护区围护桩施工技术进行总结,针对复杂的周边环境,地基承载力弱,与地铁隧道和110 kV电缆保护区距离较近等问题,提供了一种临近地铁及110 kV电缆通道保护区围护桩施工技术,既解决在复杂地质下围护桩的施工,还可减弱施工时对既有构筑物及周边管线的影响,保证了工程的经济效益及安全。

关键词：临近地铁 110 kV电缆通道保护区地铁监测位移监测

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微光像增强器信噪比测试仪结构设计与分析

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佳木斯大学学报（自然科学版） 2023年第3期41卷 61-66页

作者：罗郭朝许孙龙李从飞王友康邹鹏袁银麟安徽建筑大学机械与电气工程学院安徽合肥230009 中国科学院合肥物质科学研究院安徽合肥230031 中国科学技术大学研究生院科学岛分院安徽合肥230036

信噪比是评价微光像增强器综合性能的重要参数之一,为实现基于制冷型Si光电探测器的像增强器信噪比检测,开展了结构方案设计及其力学特性仿真分析与试验验证。采用级联积分球方案,输出均匀稳定的辐射光源;设计测试暗室,解决像增强器定... 详细信息

信噪比是评价微光像增强器综合性能的重要参数之一,为实现基于制冷型Si光电探测器的像增强器信噪比检测,开展了结构方案设计及其力学特性仿真分析与试验验证。采用级联积分球方案,输出均匀稳定的辐射光源;设计测试暗室,解决像增强器定心配准问题,并降低系统杂散光;结合热、电磁兼容设计要求,完成探测器模块结构设计;采用密封式箱体结构,内置发黑处理的支撑隔板,提高整机抗力学性能。开展有限元分析,结果显示整机基频为564.94Hz,最大等效应力为2.21MPa,强度和刚度均满足设计要求。开展了随机振动、功能冲击力学试验,试验前后信噪比测试结果与标称值偏差小于5%,且仪器各项功能正常,证明了系统结构设计的合理性,为信噪比测试仪在复杂工作环境下可靠工作提供了保障。

关键词：微光像增强器信噪比测量装置抗力学特性

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Boosting high initial coulombic efficiency of hard carbon by in-situ electrochemical presodiation

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Journal of Energy Chemistry 2023年第2期77卷 310-316,I0008页

作者： Nannan Qin Yanyan Sun Chao Hu Sainan Liu Zhigao luo Xinxin Cao Shuquan Liang guozhao Fang School of Materials Science and Engineering Central South UniversityChangsha 410083HunanChina School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina College of Chemistry Xiangtan UniversityXiangtan 411105HunanChina Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South UniversityChangsha 410083HunanChina

Hard carbon(HC)is a promising anode material for sodium ion batteries(SIBs),whereas inferior initial coulombic efficiency(ICE)severely limits its practical *** the present work,we propose an in situ electrochemical presodiation approach to improve ICE by mixing sodium biphenyl(Na-Bp)dimethoxyethane(DME)solution with DME-based ether electrolyte.A solid electrolyte interface(SEI)could be formed beforehand on the HC electrode and Na^(+)was absorbed to nanopores and graphene stacks,compensating for the sodium loss and preventing electrolyte decomposition during the initial charge and discharge *** this way,the ICE of half-cells was increased to nearly 100%and that of full-cells from 45%to 96%with energy density from 132.9 to 230.5 W h kg^(-1).Our work provides an efficient and facile method for improving ICE,which can potentially promote the practical application of HCbased materials.

关键词： Hard carbon In situ presodiation Initial coulombic efficiency Solid electrolyte interface Sodium-ion batteries

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Progress and prospect of low-temperature zinc metal batteries

Advanced Powder Materials

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Advanced Powder Materials 2022年第2期1卷 27-40页

作者： Zhexuan Liu Xiongbin luo Liping Qin guozhao Fang Shuquan Liang School of Materials Science and Engineering Central South UniversityChangsha410083China College of Biological and Chemical Engineering Guangxi University of Science and TechnologyLiuzhou545006China Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South UniversityChangsha410083China

The commercial application of aqueous zinc metal batteries in the field of large-scale energy storage is still suffered from their low-temperature operation,in which the electrochemical behaviors of the electrolyte,electrode materials,and their interfaces will deteriorate at low ***,by considering the significance of this topic,an in-depth comprehensive and systematic summary of low-temperature zinc metal batteries(LTZMBs)with the main challenges and corresponding optimization strategies was ***,the promising perspectives have also been proposed,aiming to guide the scientific future development of LTZMBs.

关键词： Zinc metal batteries Low-temperature performances Hydrogen bond Ionic conductivity Diffusion kinetics

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Reconstructing interfacial manganese deposition for durable aqueous zinc-manganese batteries

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National Science Review 2023年第10期10卷 139-150页

作者： Yida Hu Zhexuan Liu Lanyan Li Shan Guo Xuefang Xie Zhigao luo guozhao Fang Shuquan Liang School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan ProvinceCentral South University School of Science Hunan University of Technology and Business College of Physical Science and Technology Xinjiang University College of Chemistry Xiangtan University

Low-cost,high-satety,and broad-prospect aqueous zinc-manganese batteries(ZMBs) are limited by complex interracial *** solid-liquid interfacial state of the cathode dominates the Mn dissolution/deposition process of aqueous ZMBs,especially the important influence on the mass and charge transfer behavior of Zn2+and Mn2+.We proposed a quasi-eutectic electrolyte(QEE) that would stabilize the reversible behavior of interracial deposition and favorable interracial reaction kinetic of manganese-based cathodes in a long cycle process by optimizing mass and charge *** emphasize that the initial interfacial reaction energy barrier is not the main factor affecting cycling performance,and the good reaction kinetics induced by interfacial deposition during the cycling process is more conducive to the stable cycling of the battery,which has been confirmed by theoretical analysis,quartz crystal microbalance with dissipation monitoring,depth etching X-ray photon-electron spectroscopy,*** a result,the QEE electrolyte maintained a stable specific capacity of 250 mAh g-1at 0.5 A g-1after 350 cycles in zinc-manganese *** energy density retention rate of the ZMB with QEE increased by 174%compared to that of conventional aqueous ***,the multi-stacked soft-pack battery with a cathodic mass load of 54.4 mg maintained a stable specific capacity of 200 mAh g-1for 100 cycles,demonstrating its commercial *** work proves the feasibility of adapting lean-water QEE to the stable aqueous ZMBs.

关键词： quasi-eutectic electrolyte aqueous zinc −manganese batteries solid −liquid interfacial state mass transfer charge transfer

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Metal-organic framework-derived porous shuttle-like vanadium oxides for sodium-ion battery application

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Nano Research 2018年第1期11卷 449-463页

作者： Yangsheng Cai guozhao Fang Jiang Zhou Sainan Liu Zhigao luo Anqiang Pan Guozhong Cao I Shuquan Liang School of Materials Science and Engineering Central South University Changsha 410083 China Key Laboratory of Nonferrous Metal Materials Science and Engineering Ministry of Education Central South University Changsha 410083 China Department of Materials and Engineering University of Washington Seattle WA 98195-2120 USA

Vanadium oxides with a layered structure are promising candidates for both lithium-ion batteries and sodium-ion batteries （SIBs）. The self-template approach, which involves a transformation from metal-organic frameworks （MOFs） into porous metal oxides, is a novel and effective way to achieve desirable electrochemical performance. In this stud~ porous shuttle-like vanadium oxides （i.e., V205, V203/C） were successfully prepared by using MIL-88B （V） as precursors with a specific calcination process. As a proof-of-concept application, the as- prepared porous shuttle-like VaOdC was used as an anode material for SIBs. The porous shuttle-like V203/C, which had an inherent layered structure with metallic behavior, exhibited excellent electrochemical properties. Remarkable rate capacities of 417, 247, 202, 176, 164, and 149 mAh.g-1 were achieved at current densities of 50, 100, 200, 500, 1,000, and 2,000 mA.g-1, respectively. Under cycling at 2 A.g-1, the specific discharge capacity reached 181 mAh.g-1, with a low capacity fading rate of 0.032% per cycle after 1,000 cycles. Density functional theory calculation results indicated that Na ions preferred to occupy the interlamination rather than the inside of each layer in the V203. Interestingly, the special layered structure with a skeleton of dumbbell-like V-V bonds and metallic behavior was maintained after the insertion of Na ions, which was beneficial for the cycle performance. We consider that the MOF precursor of MIL-88B （V） can be used to synthesize other porous V-based materials for various applications.

关键词： vanadium oxides metal-organic frameworks porous structure density functional theory(DFT) calculation sodium-ion batteries

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建立青藏高原东部气候生态综合监测体系的探讨

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林业资源管理 2005年第5期 66-70+76页

作者：罗磊严承高彭国照北京100714 中国气象局成都高原气象研究所四川成都610072 国家林业局调查规划设计院中国气象局成都高原气象研究所

针对青藏高原东部气候生态现状,提出了在当地建立气候生态综合监测体系的构想。就开展监测的总体思路、建设目标、监测要解决的关键技术问题、监测体系布局和监测内容等问题进行了探讨。重点从监测体系的结构和建设实施方案等方面展开讨... 详细信息

针对青藏高原东部气候生态现状,提出了在当地建立气候生态综合监测体系的构想。就开展监测的总体思路、建设目标、监测要解决的关键技术问题、监测体系布局和监测内容等问题进行了探讨。重点从监测体系的结构和建设实施方案等方面展开讨论,建议以气候生态动态监测和典型气候生态系统定位观测相结合的方式开展兼具深度和广度的气候生态监测,提出了建设青藏高原东部气候生态环境监测体系的基本技术框架。

关键词：青藏高原气候生态监测生态区划总体规划

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若尔盖及其邻近地区气候变化对湿地生态环境的影响

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高原山地气象研究 2008年第3期28卷 44-48页

作者：罗清彭国照中国气象局成都高原气象研究所成都610072

利用若尔盖及其周边8个站点从建站以来的气候资料以及对若尔盖湿地生态环境的调查资料、近期遥感监测资料,从气候变化角度分析了该区域热量资源的变化特征、若尔盖地区生态环境的变化以及引起环境变化的基本原因。结果表明,若尔盖及其... 详细信息

利用若尔盖及其周边8个站点从建站以来的气候资料以及对若尔盖湿地生态环境的调查资料、近期遥感监测资料,从气候变化角度分析了该区域热量资源的变化特征、若尔盖地区生态环境的变化以及引起环境变化的基本原因。结果表明,若尔盖及其周边地区的年平均气温在逐渐上升,若尔盖上升幅度达到0.2284℃/10年,同时各个季节的温度也在逐渐上升,以冬季升温最明显。随着温度的升高,牧草生长季有延长的趋势,对牧草生长具有一定的积极作用,但另一方面也有利于病虫害的越冬,对来年牧草的生长不利。

关键词：若尔盖湿地沙化气候变化

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