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Fabrication of highly effective electrodes for iron chromium redox flow battery

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Nano Research 2024年第5期17卷 3988-3996页

作者： Yingchun Niu Chao Guo Yinping Liu Guangfu Wu Tianhang Zhou Fangang Qu Ziji Yang Ali Heydari Chunming xu quan xu State Key Laboratory of Heavy Oil Processing China University of Petroleum(Beijing)Beijing 102249China

Iron-chromium redox flow batteries(ICRFBs)have emerged as promising energy storage devices due to their safety,environmental protection,and reliable *** carbon cloth(CC),often used in ICRFBs as the electrode,provides a suitable platform for electrochemical processes owing to its high surface area and interconnected porous ***,the CC electrodes have issues,such as,insufficient electron transfer performance,which limits their industrial ***,we employed silicic acid etching to carve dense nano-porous structures on the surface of CC electrodes based on the favorable design of ICRFBs and the fundamental principles of electrode polarization *** a result,we developed a multifunctional carbon cloth electrode with abundant vacancies,notably enhancing the performance of the *** fabricated electrode showcased a wealth of defect sites and superior electronic transport properties,offering an extensive and effective reaction area for rapidly flowing *** an electrode compression ratio of 40%and the highest current density in ICRFBs so far(140 mA·cm^(-2)),the battery achieved the average energy efficiency of 81.3%,11.24%enhancement over the previously published ***,throughout 100 charge-discharge cycles,the average energy efficiency degradation was negligible(~0.04%),which has the potential to become the most promising candidate for large-scale and long-term electrochemical energy storage applications.

关键词： iron chromium redox flow battery electron carbon cloth defect site density functional theory(DFT)calculation

Bi-doped carbon quantum dots functionalized liposomes with fluorescence visualization imaging for tumor diagnosis and treatment

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Chinese Chemical Letters 2024年第4期35卷 414-419页

作者： Peide Zhu Yangjia Liu Yaoyao Tang Siqi Zhu Xinyang Liu Lei Yin quan Liu Zhiqiang Yu quan xu Dixian Luo Juncheng Wang State Key Laboratory of Heavy Oil Processing China University of Petroleum-BeijingBeijing 102249China Department of Laboratory Medicine Dongguan Institute of Clinical Cancer ResearchAffiliated Dongguan HospitalSouthern Medical UniversityDongguan 523058China Department of Laboratory Medicine Huazhong University of Science and Technology Union Shenzhen Hospital(Nanshan Hospital)Shenzhen 518052China Institute of Stomatology First Medical CenterChinese PLA General HospitalBeijing 100853China

Liposomes are one of the significant classes of antitumor nanomaterials and the most successful nanomedicine drugs in clinical translation. However, it is difficult to accurately reveal liposome delivery modes and drug release rates at different p H values to assess the biodistribution and drug delivery pathways in vivo. Here, we established a strategy to integrate Bi-doped carbon quantum dots(CQDs)with liposomes to produce fluorescence visualization and therapeutic effects, namely lipo/Bi-doped ***/Bi-doped CQDs show good water solubility and physicochemical properties, which can be used for in vitro labeling of colon cancer(CT26) cells and in vivo imaging localization tracking tumors for monitoring. Simultaneously, thanks to the excellent p H sensitivity and ion doping characteristic of Bi-doped CQDs, lipo/Bi-doped CQDs can be used to reveal the drug release rate of liposomes at different p H values and exhibit potential effects in vivo antitumor therapy.

关键词： Bi-doped CQDs Lipo/Bi-doped CQDs pH sensitivity In vitro/in vivo imaging Diagnosis and treatment integration

Asymmetric frequency multiplexing topological devices based on a floating edge band

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Photonics Research 2024年第6期12卷 1201-1212页

作者： JIAJUN MA CHUNMEI OUYANG YUTING YANG DONGYANG WANG HONGYI LI LI NIU YI LIU quan xu YANFENG LI ZHEN TIAN JIAGUANG HAN WEILI ZHANG Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering and Key Laboratory of Optoelectronics Information and TechnologyTianjin UniversityTianjin 300072China School of Materials Science and Physics China University of Mining and TechnologyXuzhou 221116China Optoelectronics Research Centre University of SouthamptonSouthampton SO171BJUK Guangxi Key Laboratory of Optoelectronic Information Processing School of Optoelectronic EngineeringGuilin University of Electronic TechnologyGuilin 541004China School of Electrical and Computer Engineering Oklahoma State UniversityStillwaterOklahoma 74078USA

Topological photonics provides a platform for robust energy transport regardless of sharp corners and ***,the frequency multiplexing topological devices have attracted much attention due to the ability to separate optical signals by wavelength and hence the potential application in optical communication *** frequency multiplexing topological devices are generally based on the slow light ***,the resulting static local spatial mode or finely tuned flat band has zero-group velocity,making it difficult for both experimental excitation and channel ***,we propose and experimentally demonstrate an alternative prototype of asymmetric frequency multiplexing devices including a topological rainbow and frequency router based on floating topological edge mode(instead of localized ones);hence the multiple wavelength channels can be collectively excited with a point source and efficiently routed to separate output *** channel separation in our design is achieved by gradually tuning the band gap truncation on a topological edge band over a wide range of frequencies.A crucial feature lies in that the topological edge band is detached from bulk states and floating within the upper and lower photonic band *** interestingly,due to the sandwiched morphology of the edge band,the top and bottom band gaps will each truncate into transport channels that support topological propagation towards opposite directions,and the asymmetrical transportation is realized for the frequency multiplexing topological devices.

关键词： tuning floating hence

On-chip terahertz orbital angular momentum demultiplexer

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Photonics Research 2024年第5期12卷 1044-1054页

作者： XIAOHAN JIANG WANYING LIU quan xu YUANHAO LANG YIKAI FU FAN HUANG HAITAO DAI YANFENG LI xuEQIAN ZHANG JIANQIANG GU JIAGUANG HAN WEILI ZHANG Center for Terahertz Waves College of Precision Instrument and Optoelectronics Engineeringand Key Laboratory of Optoelectronics Information and Technology(Ministry of Education)Tianjin UniversityTianjin 300072China Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology School of ScienceTianjin UniversityTianjin 300072China Guangxi Key Laboratory of Optoelectronic Information Processing School of Optoelectronic EngineeringGuilin University of Electronic TechnologyGuilin 541004China School of Electrical and Computer Engineering Oklahoma State UniversityStillwaterOklahoma 74078USA

The terahertz regime is widely recognized as a fundamental domain with significant potential to address the demands of next-generation wireless *** parallel,mode division multiplexing based on orbital angular momentum(OAM)shows promise in enhancing bandwidth utilization,thereby expanding the overall communication channel *** this study,we present both theoretical and experimental demonstrations of an on-chip terahertz OAM *** device effectively couples and steers seven incident terahertz vortex beams into distinct high-quality focusing surface plasmonic beams,and the focusing directions can be arbitrarily *** proposed design strategy integrates space-to-chip mode conversion,OAM recognition,and on-chip routing in a compact space with subwavelength thickness,exhibiting versatility and superior performance.

关键词： demultiplexer momentum angular

One-step controlled electrodeposition nickel sulfides heterointerfaces favoring the desorption of hydroxyl groups for efficient hydrogen generation

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Rare Metals 2024年第9期43卷 4377-4386页

作者： Ru-Chun Li Xin-Yue Zhang Ze-Yue Qu Feng-Yi Liu quan-Qing xu Zhao-Xia Hu Jing-Wei Li Mohamed-Nawfal Ghazzal Jin-Li Yu Faculty of Chemistry and Chemical Engineering Yunnan Normal University Foshan Gaoke Hechuang Technology Co. Ltd. School of Chemistry and Chemical Engineering Guangzhou University Universite′Paris-Saclay UMR 8000 CNRSInstitut de Chimie Physique Department of Chemistry City University of Hong Kong

The heterointerface engineering involving different components or phases represents a desirable strategy for enhancing the sluggish kinetics of hydrogen evolution reaction （HER）.However,constructing desired heterointerfaces and elucidating the reaction mechanisms on the interface remains a considerable *** this work,we propose a straightforward electrochemical synthesis strategy to prepare the nickel sulfide-based heterointerfaces for *** mechanism of electrochemical synthesis is revealed,wherein metal-thiourea species can be formed at the cathode potential and subsequently oxidized to nickel sulfides at the anode *** this mechanism,a range of nickel sulfides,including NiS,Ni3S2/NiS,Ni/Ni3S2and Ni3S2,have been successfully synthesized by tuning the potential range of cyclic *** these,the obtained Ni3S2/NiS@CC（CC:carbon cloth） exhibits the smallest overpotential of84 mV at 10 mA·cm-2and high *** calculations further reveal that the combination of NiS and Ni3S2induces electron redistribution at the interface,and thus the Volmer process is effectively promoted with faster water dissociation and OH desorption ***,the simplicity method coupled with a clear synthesis mechanism and outstanding HER performance highlights its promising potential for practical applications.

关键词： Electrochemical synthesis Heterointerfaces Hydrogen evolution reaction OH desorption kinetics

B-cell-specific signatures reveal novel immunophenotyping and therapeutic targets for hepatocellular carcinoma

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World Journal of Gastroenterology 2024年第34期30卷 3894-3925页

作者： Ke-quan xu Zheng Gong Jia-Ling Yang Chu-Qi Xia Jian-Yi Zhao Xi Chen Department of Hepatobiliary and Pancreatic Surgery Zhongnan Hospital of Wuhan UniversityWuhan 430071Hubei ProvinceChina Department of Pharmacy Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022Hubei ProvinceChina School of Basic Medical Sciences Nanjing Medical UniversityNanjing 211166Jiangsu ProvinceChina Department of Gastrointestinal Surgery The Second Affiliated Hospital of Kunming Medical UniversityKunming 650101Yunnan ProvinceChina Department of General Surgery Second People’s Hospital of Jiaozuo CityJiaozuo 454001Henan ProvinceChina

BACKGROUND Immunotherapy presents both promises and challenges in treating hepatocellular carcinoma(HCC)due to its complex immunological *** role of B cells,a key part of the immune system,remains uncertain in *** To identify B-cell-specific signatures and reveal novel immunophenotyping and therapeutic targets for *** Using the Tumor Immune Single-cell Hub 2 database,we identified B-cell-related genes(BRGs)in *** enrichment analysis was performed to explore the possible collaboration between B cells and T cells in *** conducted univariate Cox regression analysis using The Cancer Genome Atlas liver HCC collection dataset to find BRGs linked to HCC ***,least absolute shrinkage and selection operator regression was utilized to develop a prognostic model with 11 *** model was validated using the International Cancer Genome Consortium dataset and *** The risk score derived from the prognostic model emerged as an independent prognostic factor for *** of the immune microenvironment and cell infiltration revealed the immune status of various risk groups,supporting the cooperation of B and T cells in suppressing *** BRGs model identified new molecular subtypes of HCC,each with distinct immune *** sensitivity analysis identified targeted drugs effective for each HCC subtype,enabling precision therapy and guiding clinical *** We clarified the role of B cells in HCC and propose that the BRGs model offers promising targets for personalized immunotherapy.

关键词： B cell Hepatocellular carcinoma Immune microenvironment Immunotherapy Molecular subtype

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籼粳杂种不育的遗传分析和候选基因鉴定

中国农业科学 2024年第8期57卷 1417-1429页

作者：许娜唐颖徐正进孙健徐铨沈阳农业大学水稻研究所

【目的】籼粳亚种间杂交F1的育性问题严重阻碍了亚种间杂种优势的利用，探究籼粳杂种不育的遗传机理，挖掘新的籼粳杂种不育调控基因，为促进籼粳杂种结实率遗传改良提供理论依据。【方法】粳稻品种Sasanishiki和籼稻品种Habataki杂交... 详细信息

【目的】籼粳亚种间杂交F1的育性问题严重阻碍了亚种间杂种优势的利用，探究籼粳杂种不育的遗传机理，挖掘新的籼粳杂种不育调控基因，为促进籼粳杂种结实率遗传改良提供理论依据。【方法】粳稻品种Sasanishiki和籼稻品种Habataki杂交后，采用单粒传法自交10代，获得包含95个株系的稳定遗传重组自交系（RIL），基于Illumina平台，对双亲和RIL进行高通量测序，在全基因组水平分析RIL中Habataki血缘的分布与比例，进而鉴定偏分离区域作为潜在的籼粳杂种不育位点。同时，剖析“全球3000份水稻核心种质资源重测序计划”中典型籼粳稻基因组变异数据，对群体水平进一步验证并趋近目标育性基因区域。最终通过序列比对锁定籼粳杂种不育候选基因。应用CRISPR基因编辑技术进行定点基因敲除，对目标基因进行功能验证。【结果】Habataki和Sasanishiki的杂交F1在穗数、每穗粒数和千粒重上体现出明显的杂种优势，但其结实率显著降低，I2-KI镜检发现F1花粉育性显著降低。RIL的全基因组高通量测序在第1、3、5、6、7和12染色体上检测到明显的偏分离，即该区域的基因型趋向于籼稻Habataki。通过序列比对，进一步确定已知育性基因Sc、S5和HSA1为第3、6和12染色体上偏分离区域的目标基因。应用CRISPR基因编辑技术敲除Habataki中Sc-Haba-3的多拷贝，成功改善了其与Sasanishiki杂交F1的花粉育性和结实率，说明该基因可独立行使功能。同时，在第1染色体的偏分离区域发现Habataki和Sasanishiki之间存在复杂的结构性变异，Sasanishiki基因组中一段24.7 kb包含4个预测基因的片段在Habataki中被一段64.8 kb包含10个预测基因的片段取代，此结构性变异可能参与籼粳杂种育性的调控。【结论】检测到多个籼粳杂种不育相关位点，应用CRISPR基因编辑技术敲除Habataki中Sc的多拷贝成功改善其杂种F1育性，确定其为水稻亚种间育性改良的目标基因。同时锁定了第1染色体Sd区域的目标基因。

关键词：水稻籼粳杂种不育高通量测序基因编辑 Sd候选基因

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中小企业国际规则新发展与中国因应

国际经济合作 2024年第1期 22-33,86页

作者：徐泉刘小琳西南政法大学对外开放法治建设研究中心西南政法大学国际法学院

以CPTPP、USMCA、RCEP为代表的区域贸易协定均对中小企业问题进行相应规制,其条款设计集中体现了中小企业国际规则的主要特点和发展趋势。虽然中小企业国际规则存在诸多不足,并面临立法技术困境,但中小企业议题作为国际经贸谈判重要的... 详细信息

以CPTPP、USMCA、RCEP为代表的区域贸易协定均对中小企业问题进行相应规制,其条款设计集中体现了中小企业国际规则的主要特点和发展趋势。虽然中小企业国际规则存在诸多不足,并面临立法技术困境,但中小企业议题作为国际经贸谈判重要的横向议题之一,仍然具有较大的发展潜力,并对中国中小企业管理体制产生了一定影响。中国中小企业规则体系的缺陷严重制约中小企业长远发展,应在准确研判中小企业国际规则及其发展趋势的基础上,深化国内相关体系改革,为中小企业发展提供良好的制度支撑。同时,中国应积极参与本轮国际经贸规则的重构进程,适时通过自由贸易谈判促进中小企业国内规则的国际化,实现中国对全球经济治理体系的规则供给,推动中小企业国际规则的进一步完善。

关键词：中小企业国际经贸规则规则治理 CPTPP USMCA RCEP

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发展长江水利新质生产力的几点思考

长江科学院院报 2024年第9期41卷 1-7页

作者：许全喜许继军长江科学院武汉430010

发展水利新质生产力,是破解长江新老水问题、提升流域安全保障能力、推动长江经济带高质量发展的内在要求和重要着力点。结合长江治理保护新阶段特征和面临的挑战,基于新质生产力概念,从生态水利科技创新、生产要素数字智能化、产业绿... 详细信息

发展水利新质生产力,是破解长江新老水问题、提升流域安全保障能力、推动长江经济带高质量发展的内在要求和重要着力点。结合长江治理保护新阶段特征和面临的挑战,基于新质生产力概念,从生态水利科技创新、生产要素数字智能化、产业绿色转型升级等方面,探讨长江水利新质生产力的形成路径和原则要求,并提出加强近自然水工程、数字孪生、节水减污降碳、流域现代管理等方面的科技创新建议,以促进长江生态化、智慧化、绿色化和现代化发展。

关键词：新质生产力长江流域水利现代化高质量发展科技创新