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石墨烯褶皱结构对双电层储能性能的理论研究

原子与分子物理学报 2025年第6期42卷 89-100页

作者：张倩蒋更平武汉科技大学理学院应用物理系武汉430081

石墨烯因其出色的比表面积和单层结构而被广泛认为是一种理想的电极材料.然而,实验制备的石墨烯常因官能团、缺陷和位错的引入而出现褶皱和变形.针对这一问题,本文构建了一系列具有不同幅度褶皱(a=0~6.6?)的石墨烯片,并运用分子动力学... 详细信息

石墨烯因其出色的比表面积和单层结构而被广泛认为是一种理想的电极材料.然而,实验制备的石墨烯常因官能团、缺陷和位错的引入而出现褶皱和变形.针对这一问题,本文构建了一系列具有不同幅度褶皱(a=0~6.6?)的石墨烯片,并运用分子动力学模拟来研究这些褶皱石墨烯表面的双电层结构.本研究旨在探讨不同褶皱高度和充电状态下双电层的变化规律,及其与超级电容器储能性能之间的关系.研究发现,褶皱石墨烯模型内部的离子浓度随电压的增加呈现多峰层状分布,而表面离子浓度与施加的电压正相关.此外,石墨烯的褶皱结构能够减少离子和水对电极电压响应的敏感性.在不同电压条件下,褶皱型石墨烯结构的面积比电容(C_A)始终高于其平面对应区域,突出了其在提升双电层储能性能上的优势.本研究揭示了石墨烯褶皱结构在调节离子分布、降低电压敏感性,以及增强电化学储能性能方面的特有作用机制.

关键词：双电层石墨烯褶皱恒电势模拟方法

Extracellular vesicle activities regulating macrophage- and tissue-mediated injury and repair responses

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Acta Pharmaceutica Sinica B 2021年第6期11卷 1493-1512页

作者： qian Hu Christopher j.Lyon jesse K.Fletcher Wenfu Tang Meihua Wan Tony y.Hu Department of Integrated Traditional Chinese and Western Medicine West China HospitalSichuan UniversityChengdu 610041China Center of Cellular and Molecular Diagnosis Tulane University School of MedicineNew OrleansLA 70112USA Department of Biochemistry&Molecular Biology Tulane University School of MedicineNew OrleansLA 70112USA

Macrophages are typically identified as classically activated(M1) macrophages and alternatively activated(M2) macrophages,which respectively exhibit pro-and anti-inflammatory phenotypes,and the balance between these two subtypes plays a critical role in the regulation of tissue inflammation,injury,and repair *** studies indicate that tissue cells and macrophages interact via the release of small extracellular vesicles(EVs) in processes where EVs released by stressed tissue cells can promote the activation and polarization of adjacent macrophages which can in turn release EVs and factors that can promote cell stress and tissue inflammation and injury and vice *** review discusses the roles of such EVs in resulating such interactions to influence tissue inflammation and injury in a number of acute and chronic inflammatory disease conditions,and the potential applications,advantage and concerns for using EV-based therapeutic approaches to treat such conditions,including their potential role of drug carriers for the treatment of infectious diseases.

关键词： Extracellular vesicles Macrophage Tissue injury Inflammatory disease Interaction loop Stem cell Sepsis Targeted therapy

中国馆藏文物保护修复术语英译标准化原则与策略

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中国科技术语 2025年第1期27卷 39-42页

作者：王茜故宫博物院北京100009

中国文物保护历史悠久,文物保护修复术语含义深厚,蕴含着丰富的文化特色。文章梳理了馆藏文物保护修复术语的基本内容与来源,针对术语特点,结合术语工作原则,总结出英译标准化原则,归纳其英译策略,有助于加强文物保护术语的规范化、标... 详细信息

中国文物保护历史悠久,文物保护修复术语含义深厚,蕴含着丰富的文化特色。文章梳理了馆藏文物保护修复术语的基本内容与来源,针对术语特点,结合术语工作原则,总结出英译标准化原则,归纳其英译策略,有助于加强文物保护术语的规范化、标准化和国际化进程,彰显国际交流中的中国特色。

关键词：文物保护修复术语英译标准化

间歇性投加Fe(Ⅱ)协同MBR强化生物脱氮除磷的研究

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水处理技术 2025年第1期51卷 108-113页

作者：任宝玉钱超鸿中建三局绿色产业投资有限公司湖北武汉430064

为考察间歇性投加亚铁(Fe(Ⅱ))对陶瓷膜膜生物反应器(MBR)脱氮除磷效果的影响,以合成废水作为原水,系统考察了当Fe(Ⅱ)的投加量为Fe(Ⅱ)/P=1和2(摩尔比)时,MBR的出水水质、微生物群落结构及相关功能基因拷贝数的变化情况。结果显示,投加... 详细信息

为考察间歇性投加亚铁(Fe(Ⅱ))对陶瓷膜膜生物反应器(MBR)脱氮除磷效果的影响,以合成废水作为原水,系统考察了当Fe(Ⅱ)的投加量为Fe(Ⅱ)/P=1和2(摩尔比)时,MBR的出水水质、微生物群落结构及相关功能基因拷贝数的变化情况。结果显示,投加Fe(Ⅱ)可有效去除出水总磷(TP)和总氮(TN),与对照组相比,当投加量为Fe(Ⅱ)/P=1和2时,TP的去除率分别提高了14.40%和18.60%,TN的去除率分别提高了2.30%和6.50%。实验进一步研究了Fe(Ⅱ)对优势菌群和相关功能基因的影响,投加Fe(Ⅱ)可以通过提高脱氮(Dechloromonas、Hyphomicrobium、Nitrospira、Zoogloea和Acinetobacter)和除磷(Candidatus Accumulibacter)微生物的相对丰度、脱氮相关功能基因拷贝数(AOB-amoA、narG、nirK/nirS、norB和norZ)强化生物脱氮除磷效能。采用PICRUSt功能预测分析表明,在Fe(Ⅱ)/P=2条件下,Fe(Ⅱ)可以通过促进反硝化过程的酶(NR、NIR、NOR和N2OR)的相对丰度提高脱氮性能。综上,当投加量为Fe(Ⅱ)/P=2时,可通过影响脱氮除磷过程中关键功能基因拷贝数及生物群落结构,强化陶瓷膜MBR系统生物脱氮除磷性能。

关键词： MBR 亚铁生物脱氮除磷性能群落结构脱氮功能基因

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大数据技术在高校教育教学中的实践运用

办公自动化 2025年第1期30卷 42-44页

作者：张倩南阳医学高等专科学校南阳473000

随着大数据技术的不断发展和普及,越来越多的高校开始尝试将其用到教育教学以提升教学质量、个性化教育,以及优化教学资源配置。文章探讨大数据技术对高校教育教学的影响,分析大数据技术在高校教育教学中的实践,为高校教育教学的改革提... 详细信息

随着大数据技术的不断发展和普及,越来越多的高校开始尝试将其用到教育教学以提升教学质量、个性化教育,以及优化教学资源配置。文章探讨大数据技术对高校教育教学的影响,分析大数据技术在高校教育教学中的实践,为高校教育教学的改革提供理论支持和实践借鉴。

关键词：大数据技术高校教育教学教学管理

Alloy solidification: Assessment and improvement of an easy-to-apply model

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journal of Materials Science & Technology 2022年第35期130卷 1-11页

作者： H.Liu y.Liu S.L.Lu y.Zhang H.Chen y.Chen M.qian School of Materials Science and Engineering Southwest Jiaotong UniversityChengdu 610031China Centre for Additive Manufacturing School of EngineeringRMIT UniversityMelbourneVIC 3000Australia School of Materials Science and Engineering Sichuan UniversityChengdu 610065China

It has been a central task of solidification research to predict solute microsegregation. Apart from the Lever rule and the Scheil-Gulliver equation, which concern two extreme cases, a long list of microsegregation models has been proposed. However, the use of these models often requires essential experimental input information, e.g., the secondary dendrite arm spacing(λ), cooling rate( ˙T) or actual solidification range(△T). This requirement disables these models for alloy solidification with no measured values for λ,˙T and △T. Furthermore, not all of these required experimental data are easily obtainable. It is therefore highly desirable to have an easy-to-apply predictive model that is independent of experimental input,akin to the Lever rule or Scheil-Gulliver model. Gong, Chen, and co-workers have recently proposed such a model, referred to as the Gong-Chen model, by averaging the solid fractions(f_(s)) of the Lever rule and Scheil-Gulliver model as the actual solid fraction. We provide a systematic assessment of this model versus established solidification microsegregation models and address a latent deficiency of the model, i.e.,it allows the Lever rule solid fraction fsto be greater than one(f_(s)> 1). It is shown that the Gong-Chen model can serve as a generic model for alloy solidification until fsreaches about 0.9, beyond which(f_(s)> 0.9) its applicability is dictated by both the equilibrium solute partition coefcient(k) and the solute diffusion coefcient in the solid(Ds), which has been tabulated in detail.

关键词： Solidification Microsegregation Solute Back diffusion Eutectic formation

Folding patterns of chromatin in chicken erythrocyte studied by using AFM and TEM

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Chinese Science Bulletin 1998年第4期43卷 289-291页

作者： Liu, ZX Zhou, My Xie, Hy qian, RL Zhang, y Hu, j Li, MQ Chinese Acad Sci Shanghai Inst Cell Biol Shanghai 200031 Peoples R China Chinese Acad Sci Shanghai Inst Nucl Res Shanghai 201800 Peoples R China

Four folding patterns (～15, ～30-40, ～60 and ～90-110 nm) of the higher_order structure of chromatin in chicken erythrocytes have been observed with an atomic force microscope (AFM) under near natural conditions. Results showed that the chromatin in the interphase nucleus of chicken erythrocyte was not in a disorganized form but represented a higher_order conformation. The thin sections of the chromatin in the nucleus of chicken erythrocyte were examined with a transmission electron microscope (TEM). Compared with TEM, AFM had the advantages that the samples did not need the preparation procedures such as fixing, sectioning and staining, and thus were closer to their native condition.

关键词： chromatin structure nucleus of chicken erythrocyte AFM TEM.

Single crystal growth, structural and transport properties of bad metal RhSb2

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Chinese Physics B 2020年第3期29卷 1-6页

作者： D S Wu y T qian Z y Liu W Wu y j Li S H Na y T Shao P Zheng G Li j G Cheng H M Weng j L Luo Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China

We have successfully grown an arsenopyrite marcasite type RhSb2 single crystal, and systematically investigated its crystal structure, electrical transport, magnetic susceptibility, heat capacity, and thermodynamic properties. We found that the temperature-dependent resistivity exhibits a bad metal behavior with a board peak around 200 K. The magnetic susceptibility of RhSb2 shows diamagnetism from 300 K to 2 K. The low-temperature specific heat shows a metallic behavior with a quite small electronic specific-heat coefficient. No phase transition is observed in both specific heat and magnetic susceptibility data. The Hall resistivity measurements show that the conduction carriers are dominated by electrons with ne = 8.62 × 10^(18) cm^(-3) at 2 K, and the electron carrier density increases rapidly above 200 K without change sign. Combining with ab-initio band structure calculations, we showed that the unusual peak around 200 K in resistivity is related to the distinct electronic structure of RhSb_2. In addition, a large thermopower S(T) about -140 μV/K is observed around 200 K, which might be useful for future thermoelectric applications.

关键词： single crystal growth ab-initio band calculations susceptibility heat capacity thermodynamic transport properties

经颅微电流刺激联合氟哌啶醇治疗儿童多发性抽动障碍的临床疗效观察

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罕少疾病杂志 2025年第1期32卷 144-146页

作者：韩露李倩倩开封市儿童医院康复心理保健中心河南开封475000

目的分析CES联合氟哌啶醇治疗TD患儿中的应用效果。方法收集本院2022年6月至2023年12月门诊收治TD患儿82例,依据治疗方案分为对照组(氟哌啶醇治疗)40例、观察组(CES联合氟哌啶醇治疗)42例。比较两组临床疗效、抽动症状以及安全性。结... 详细信息

目的分析CES联合氟哌啶醇治疗TD患儿中的应用效果。方法收集本院2022年6月至2023年12月门诊收治TD患儿82例,依据治疗方案分为对照组(氟哌啶醇治疗)40例、观察组(CES联合氟哌啶醇治疗)42例。比较两组临床疗效、抽动症状以及安全性。结果治疗后,观察组临床总有效率高于对照组(PyGTSS评分低于对照组(P0.05)。结论经CES联合氟哌啶醇治疗TD患儿中有效改善患儿抽动症状,可提升临床疗效,且安全性高。

关键词：经颅微电流刺激疗法氟哌啶醇多发性抽动障碍临床疗效

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