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Aligned Ion Conduction Pathway of Polyrotaxane‑Based Electrolyte with Dispersed Hydrophobic Chains for Solid‑State Lithium–Oxygen Batteries

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Nano-Micro Letters 2025年第2期17卷 169-186页

作者： Bitgaram Kim Myeong‑Chang Sung Gwang‑Hee Lee Byoungjoon Hwang Sojung Seo ji‑Hun Seo dong‑Wan Kim Department of Materials Science and Engineering Korea University145 Anam‑RoSeongbuk‑GuSeoul 02841Republic of Korea School of Civil Environmental and Architectural EngineeringKorea University145 Anam‑RoSeongbuk‑GuSeoul 02841Republic of Korea Materials Science and Chemical Engineering Center Institute for Advanced Engineering(IAE)Yongin 17180Republic of Korea

A critical challenge hindering the practical application of lithium–oxygen batteries(LOBs)is the inevitable problems associated with liquid electrolytes,such as evaporation and safety *** study addresses these problems by proposing a modified polyrotaxane(mPR)-based solid polymer electrolyte(SPE)design that simultaneously mitigates solvent-related problems and improves ***-SPE exhibits high ion conductivity(2.8×10^(−3)S cm^(−1)at 25℃)through aligned ion conduction pathways and provides electrode protection ability through hydrophobic chain *** this mPR-SPE into solid-state LOBs resulted in stable potentials over 300 *** situ Raman spectroscopy reveals the presence of an LiO_(2)intermediate alongside Li_(2)O_(2)during oxygen *** situ X-ray diffraction confirm the ability of the SPE to hinder the permeation of oxygen and moisture,as demonstrated by the air permeability *** present study suggests that maintaining a low residual solvent while achieving high ionic conductivity is crucial for restricting the sub-reactions of solid-state LOBs.

关键词： Solid polymer electrolyte Lithium-oxygen batteries Polyrotaxane ion conductivity Hydrophobic chain

肿瘤出芽与pT1期胃腺癌临床病理特征的相关性分析

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临床与实验病理学杂志 2021年第4期37卷 384-388页

作者：徐程张响姬东泽吴靓徐刘洋张智弘江苏省人民医院/南京医科大学第一附属医院病理科南京210029

目的分析肿瘤出芽(tumor budding,TB)与pT1期胃腺癌临床病理特征的相关性。方法收集2013年1月~2015年1月江苏省人民医院/南京医科大学第一附属医院病理学部确诊的pT1期胃腺癌232例(剔除低黏附性癌),利用国际TB会议共识(International Tu... 详细信息

目的分析肿瘤出芽(tumor budding,TB)与pT1期胃腺癌临床病理特征的相关性。方法收集2013年1月~2015年1月江苏省人民医院/南京医科大学第一附属医院病理学部确诊的pT1期胃腺癌232例(剔除低黏附性癌),利用国际TB会议共识(International Tumor Budding Consensus Conference,ITBCC)推荐的结直肠癌TB热点区评估法,评估pT1期胃腺癌TB,并将每0.785 mm 2的TB数0.05)。结论TB是肿瘤侵袭性的重要指标;TB的评估方法可采用“TB热点区评估法”;建议在pT1期胃腺癌的规范病理报告中加入TB指标。

关键词：胃肿瘤 pT1期胃腺癌肿瘤出芽临床病理特征

A New Ceramide from the Basidiomycetes Armillaria mellea

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Chinese Chemical Letters 2001年第2期12卷 139-140页

作者： jin Ming GAO ze Jun dong ji Kai LIU Kunming Institute of Botany Chinese Academy of SciencesKunming 650204 Northwest Sci & Tech.University of Agriculture and Forestry YanglingShaanxi 712100

A new phytosphingosine-type ceramide, armillaramide 1, has been isolated from the fruiting bodies of Basidiomycetes Armillaria mellea (Vahl ex Fr.) Quel. Its structure was established as (2S, 3S. 4R)-2-N-(palmitoyl)-p... 详细信息

关键词： Armillaria mellea basidiomycetes ceramide armillaramide

Mediating role of health literacy in the relationship between social isolation and psychological distress among pre-frail older adults

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World Journal of Psychiatry 2025年第1期15卷 137-144页

作者： Juan Fang Li-Hui Li Ming-Qian He Yue ji dong-Yan Lu Li-Bing Zhang jin-Lan Yao School of Medicine Huzhou UniversityHuzhou 313000Zhejiang ProvinceChina

BACKGROUND Frailty has become a significant public health *** recent increase in the number of frail older adults has led to increased attention being paid to psycho-logical care services in *** social isolation of pre-frail older adults can impact their psychological *** To explore the mediating effect of health literacy between social isolation and psychological distress among communitydwelling older adults with *** This descriptive cross-sectional study was conducted with 254 pre-frail older individuals aged 60 years and *** isolation,health literacy,and psycholo-gical distress were comprehensively measured using the Lubben Social Network Scale-6,12-item Short-Form Health Literacy Questionnaire,and the Kessler Psy-chological Distress *** were evaluated using the SPSS 27.0 package program and the PROCESS macro *** statistical analyses,correlation analyses,and bootstrap mediation tests were used to assess associations between the *** The results showed that social isolation had an effect on health literacy among pre-frail older adults(β=0.240,P<0.001),social isolation impact on psycho-logical distress pre-frail older adults(β=-0.415,P<0.001);health literacy was identified effect on psychological distress among pre-frail older persons(β=-0.307,P<0.001).Health literacy partially mediated the relationship between social isolation and psychological distress among community-dwelling older adults with pre-frailty,with a mediation effect of-0.074,accounting for 17.83%of the total effect.

关键词： Frail Ageing Psychological distress Health literacy Social isolation

Peroxy natural products

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Natural Products and Bioprospecting 2013年第5期3卷 161-206页

作者： dong-ze LIU ji-Kai LIU Tianjin Institute of Industrial Biotechnology Chinese Academy of ScienceTianjin 300308China State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China

This review covers the structures and biological activities of peroxy natural products from a wide variety of terrestrial fungi,higher plants,and marine *** that confirm or revise structures or stereochemistries have ... 详细信息

关键词： organisms. fir chemi

Enhanced performance of core-shell structured sodium manganese hexacyanoferrate achieved by self-limiting Na^(+)-Cs^(+)ion exchange for sodium-ion batteries

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Rare Metals 2022年第11期41卷 3740-3751页

作者： Yan-dong Guo ji-Cheng jiang jian Xie Xin Wang jing-ze Li dong-Huang Wang Ai-Jun Zhou School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu611731China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou313001China State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China

Sodium manganese hexacyanoferrate(NaMnHCF)is a promising cathode material for sodiumion batteries(SIBs)due to its low cost and high energy *** Jahn-Teller effect of Mn,however,leads to the poor structural stability of NaMnHCF,resulting in undesired electrochemical ***,we developed a novel coating strategy and obtained a coreshell structured NaMnHCF through facile Na^(+)-Cs^(+)ion exchange,which naturally produced a robust and insoluble Cs-rich surface layer(CsMnHCF)with several nanometers in thickness on pristine *** is shown that the Csrich surface plays a positive role in the stability of the NaMnHCF structure by prohibiting the leakage of crystal water,stabilizing the solid-liquid interfaces,and solidifying crystal *** electrochemical performance of the core-shell NaMnHCF is dramatically improved with a discharge capacity of 76.3 mAh·g^(-1)after 1000 cycles at 1.0 C and a reversible capacity of 87.0 mAh·g^(-1)at 10.0 C,which is much superior to that of the pristine NaMnHCF with only 26.6 mAh·g^(-1)after 400 cycles and 31 mAh·g^(-1)at 10.0 *** work reports a new method for the synthesis of core-shell NaMnHCF and provides a novel perspective for the development of advanced NaMnHCF cathode for SIBs.

关键词： Sodium manganese hexacyanoferrate Ion-exchange Core-shell structure Surface modification Sodium-ion batteries

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基于模糊PID的新型剂量率控制输出算法

中国医疗器械信息 2015年第7期21卷 42-45页

作者：赵利利秦嘉川宋迎新纪东泽成希革山东新华医疗器械股份有限公司放射治疗事业部淄博250086

医用电子直线加速器的剂量输出模块是放射治疗的重要部分之一。剂量监测是将X辐射应用于放射治疗的基础,而人体的肿瘤的吸收剂量是无法直接测量的,因此,人们使用电离室间接计算吸收剂量。而人体肿瘤接受的剂量是通过医用电子直线加速器... 详细信息

医用电子直线加速器的剂量输出模块是放射治疗的重要部分之一。剂量监测是将X辐射应用于放射治疗的基础,而人体的肿瘤的吸收剂量是无法直接测量的,因此,人们使用电离室间接计算吸收剂量。而人体肿瘤接受的剂量是通过医用电子直线加速器的剂量输出系统输出稳定可调的剂量率来达到目标剂量[1]。同样,稳定准确的剂量输出信号才能使治疗更加高效可靠,因此剂量输出模块稳定的剂量输出,对于使肿瘤细胞达到预期的剂量,提高医用电子直线加速器的性能有很大的作用[2]。本文采用模糊PID控制的方法对剂量输出模块做出了优化计算,使整个伺服系统更加稳定可靠,使剂量监测模块的计算更加平滑真实,并在应用电子直线加速器上做了实验,效果良好。

关键词：剂量监测剂量率 PID 吸收剂量目标剂量电子直线加速器输出模块伺服系统电离室人体肿瘤

Microstructure and Mechanical Properties of AZ91D Magnesium Alloy Recycled from Scraps by Hot-press/extrusion

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Journal of Harbin Institute of Technology(New Series) 2014年第1期21卷 115-120页

作者： Mao-Liang Hu ze-Sheng ji Xiao-Yu Chen Qu-dong Wang School of Materials Science and Engineering Harbin University of Science and Technology National Engineering Research Center for Light Alloy Net Forming Shanghai Jiao Tong University

A large number of scraps are produced in the fabrication process of magnesium alloy products. It is necessary to recycle these scraps for the development and scale application of magnesium alloys. In this research,a method for recycling AZ91D magnesium alloy scraps fabricated by hot-press / extrusion was studied. Mechanical properties and microstructure of the recycled specimens were investigated. Microstructural analyses were performed by using the techniques of optical microscopy and scanning electron microscopy. Microstructural observations reveal that the recycled specimens consisted of fine grains when adopting the extrusion temperature of 400- 450 ℃,the extrusion ratio of( 25- 100) ∶ 1 and the extrusion rate of 0. 10- 0. 20 mm / s. Ultimate tensile strength and elongation to failure increased with the increase of the extrusion temperature,the extrusion ratio and the extrusion rate,respectively. Recycled specimens reached the highest ultimate tensile strength of average 361. 47 MPa and the highest elongation to failure of average 11. 55% when adopting the hot-press,the extrusion temperature of 400± 5 ℃,the extrusion ratio of 100 ∶ 1 and the extrusion rate of 0. 15 mm / s. The shape of bonding interface was tightly relation with the ultimate tensile strength. When the bonding interface formed continuous curves,the ultimate tensile strength decreased almost linearly with increasing the average width of the bonding interface. When the bonding interface formed discontinuous curves,the ultimate tensile strength increased almost linearly with the increase the proportion of the fine bonding length accounting for the measured interface length. Ultimate tensile strength of the recycled specimens could be calculated by using the forecastable equation.

关键词： scraps magnesium alloy mechanical property bonding interface

Boosting the polysulfide confinement in B/N–codoped hierarchically porous carbon nanosheets via Lewis acid–base interaction for stable Li–S batteries

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Journal of Energy Chemistry 2020年第12期29卷 90-100页

作者： dong-Gen Xiong ze Zhang Xiao-Yun Huang Yan Huang ji Yu jian-Xin Cai Zhen-Yu Yang College of Chemistry Key laboratory of Jiangxi Province for Environment and Energy CatalysisNanchang UniversityNanchang 330031 JiangxiChina

Carbon materials have shown remarkable usefulness in facilitating the performance of insulating sulfur cathode for lithium–sulfur batteries owing to their excellent conductivity and porous structure. However,the anxiety is the poor affinity toward polar polysulfides due to the intrinsic nonpolar surface of ***, we report a direct pyrolysis of the mixture urea and boric acid to synthesize B/N–codoped hierarchically porous carbon nanosheets(B–N–CSs) as efficient sulfur host for lithium–sulfur battery. The graphene–like B–N–CSs provides high specific surface area and porous structure with abundant micropores(1.1 nm) and low–range mesopores(2.3 nm), thereby constraining the sulfur active materials within the pores. More importantly, the codoped B/N elements can further enhance the polysulfide confinement through strong Li–N and B–S interaction based on the Lewis acid–base theory. These structural superiorities significantly suppress the shuttle effect by both physical confinement and chemical interaction, and promote the redox kinetics of polysulfide conversion. When evaluated as the cathode host, the S/B–N–CSs composite displays the excellent performance with a high reversible capacity up to 772 m A h g–1 at 0.5 C and a low fading rate of ^0.09% per cycle averaged upon 500 cycles. In particular, remarkable stability with a high capacity retention of 87.1% can be realized when augmenting the sulfur loading in the cathode up to 4.6 mg cm^(-2).

关键词： Lithium–sulfur batteries Porous carbon nanosheets B/N–codoped Lewis acid–base Bimodal–pore structure