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A novel spoof surface plasmon polariton structure to reach ultra-strong field confinements

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Opto-Electronic Advances 2019年第6期2卷 9-15页

作者： Pei Hang He Hao Chi Zhang Xinxin Gao Ling Yun Niu Wen xuan tang Jiayuan Lu Le Peng Zhang Tie Jun Cui State Key Laboratory of Millimeter Waves Southeast UniversityNanjing 210096China School of Electrical and Electronic Engineering Nanyang Technological UniversityNanyang Avenue639798Singapore

Ultrathin corrugated metallic structures have been proved to support spoof surface plasmon polariton (SPP) modes on two-dimension (2D) planar microwave ***,to provide stronger field confinement,larger width of strip is required to load deeper grooves,which is cumbersome in modern large-scale integrated circuits and *** this work,a new spoof SPP transmission line (TL) with zigzag grooves is *** new structure can achieve stronger field confinement compared to conventional one with the same strip *** other words,the proposed spoof SPP TL behaves equivalently to a conventional one with much larger *** analysis theoretically indicates the negative correlation between the ability of field confinement and cutoff frequencies of spoof SPP *** simulations indicate that the cutoff frequency of the proposed TL is lower than the conventional one and can be easily modified with the fixed ***,two samples of the new and conventional spoof SPP TLs are fabricated for experimental *** S-parameters and field distributions verify the ultra-strong ability of field confinement of the proposed spoof SPP ***,this novel spoof SPP structure with ultra-strong field confinement may find wide applications in microwave and terahertz engineering.

关键词： ultrathin corrugated metallic structure surface plasmon polaritons field confinement zigzag grooves

Zinc lactate alleviates oxidative stress by modulating crosstalk between constitutive androstane receptor signaling pathway and gut microbiota profile in weaned piglets

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Animal Nutrition 2024年第1期16卷 23-33页

作者： Wenjie tang xuan Xiang Houfu Wang Wentao Zhou Liuqin He Yulong Yin Tiejun Li College of Animal Science and Technology Hunan Agricultural UniversityChangsha 410128China Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process CAS Key Laboratory of Agro-Ecological Processes in Subtropical RegionNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation Laboratory of Animal Nutrition and Human HealthCollege of Life SciencesHunan Normal UniversityChangsha 410081China College of Advanced Agricultural Science University of Chinese Academy of SciencesBeijing 100049China Sichuan Academy of Animal Sciences Animal Breeding and Genetics Key Laboratory of Sichuan ProvinceChengdu 610066China Livestock and Poultry Biological Products Key Laboratory of Sichuan Province Sichuan Animtech Feed Co.LtdChengdu 610000China

This study aimed to determine the regulatory mechanism of dietary zinc lactate(ZL)supplementation on intestinal oxidative stress damage in a paraquat(PQ)-induced piglet ***-eight piglets(mean body weight 9.51±0.23 kg)weaned at 28 d of age were randomly divided into control,ZL,PQ,and ZL+PQ groups(n=7 in each group).The ZL-supplemented diet had little effect on growth performance under normal physiological ***,under PQ challenge,ZL supplementation significantly improved average daily gain(P<0.05)and reduced the frequency of *** improved intestinal morphology and ultrastructure by significantly increasing the expression level of the jejunal tight junction protein,zonula occludens-1(ZO-1)(P<0.05),and intestinal zinc transport and absorption in PQ-induced piglets,which reduced intestinal *** supplementation also enhanced the expression of antioxidant and antiinflammatory factor-related genes and decreased inflammatory cytokine expression and secretion in PQinduced ***,ZL treatment significantly inhibited the activation of constitutive androstane receptor(CAR)signaling(P<0.01)in PQ-induced piglets and altered the structure of the gut microbiota,especially by significantly increasing the abundance of beneficial gut microbes,including UCG_002,Ruminococcus,Rikenellaceae_RC9_gut_group,Christensenellaceae_R_7_group,Treponema,unclassified_Christensenellaceae,and unclassified_Erysipelotrichaceae(P<0.05).These data reveal that pre-administration of ZL to piglets can suppress intestinal oxidative stress by improving antioxidant and anti-inflammatory capacity and regulating the crosstalk between CAR signaling and gut microbiota.

关键词： Zinc lactate Intestinal barrier Oxidative stress Inflammation Constitutive androstane receptor Gut microbiota

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唐家璇同志在中国国际关系学会发表讲话

外交评论（外交学院学报） 2005年第3期22卷 6-7页

作者： tang Jia-xuan

2005年4月16日,中国国际关系学会第七届第二次全国理事会在外交学院召开,国务委员、学会会长唐家璇出席并发表讲话.唐家璇深刻阐述了当前国际形势和我国面临的国际环境,并对国际关系学会的工作提出了明确要求.

关键词：国际关系唐家璇学会讲话中国同志 2005年外交学院国务委员国际环境国际形势理事会第七届会长阐述

NIR-triggered on-site NO/ROS/RNS nanoreactor:Cascade-amplified photodynamic/photothermal therapy with local and systemic immune responses activation

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Opto-Electronic Advances 2024年第6期7卷 58-73页

作者： Ziqing Xu Yakun Kang Jie Zhang Jiajia tang Hanyao Sun Yang Li Doudou He xuan Sha Yuxia tang Ziyi Fu Feiyun Wu Shouju Wang Laboratory of Molecular Imaging Department of RadiologyThe First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China Department of Breast Surgery The First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China Department of Women&Children Research Center The First Affiliated HospitalNanjing Medical UniversityNanjing 210029China

Photothermal and photodynamic therapies(PTT/PDT)hold promise for localized tumor treatment,yet their full potential is hampered by limitations such as the hypoxic tumor microenvironment and inadequate systemic immune *** these challenges,we present a novel near-infrared(NIR)-triggered RNS nanoreactor(PBNO-Ce6)to amplify the photodynamic and photothermal therapy efficacy against triple-negative breast cancer(TNBC).The designed PBNOCe6 combines sodium nitroprusside-doped Prussian Blue nanoparticles with Chlorin e6 to enable on-site RNS production through NIR-induced concurrent NO release and ROS *** not only enhances tumor cell eradication but also potentiates local and systemic antitumor immune responses,protecting mice from tumor *** in vivo evaluations revealed that treatment with PBNO-Ce6 leads to a remarkable 2.7-fold increase in cytotoxic T lymphocytes and a 62%decrease in regulatory T cells in comparison to the control PB-Ce6(Prussian Blue nanoparticles loaded with Chlorin e6),marking a substantial improvement over traditional PTT/*** such,the PBNO-Ce6 nanoreactor represents a transformative approach for improving outcomes in TNBC and potentially other malignancies affected by similar barriers.

关键词： photothermal therapy photodynamic therapy nitric oxide reactive nitrogen species triple-negative breast cancer immune response nanoreactor

Biomimetic mineralization synthesis of hydroxyapatite bacterial cellulose nanocomposites

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Progress in Natural Science:Materials International 2011年第6期21卷 472-477页

作者： Na YIN,Shi-yan CHEN,Yang OUYANG Lian tang,Jing-xuan YANG,Hua-ping WANG College of Materials Science and Engineering,Donghua University,Shanghai 201620,China College of Materials Science and Engineering Donghua University Shanghai 201620 China

Hydroxyapatite(HAp)/bacterial cellulose(BC) nanocomposites were prepared by an optimal biomimetic mineralization synthesis approach for bone tissue engineering *** with ultrafine three dimensional network was negatively charged by the adsorption of polyvinylpyrrolidone(PVP) to initiate the nucleation of *** HAp was grown in vitro along the nanofiber network of BC via dynamic simulated body fluid(SBF) *** was found that rod-like HAp particles in the nano-scale (100-200 nm) homogeneously deposited on the surface of ***-Fourier Transform Infrared Spectroscopy(ATR-FTIR) results showed that carbonate-containing HAp crystals resembling natural bones were formed by biomimetic mineralization method. Moreover,the amount of HAp observed increased with increasing mineralization *** the Ca/P overall ratio ranged from 1.37 to *** results from Inductively Coupled Plasma Atomic Emission Spectroscopy(ICP-AES) indicated that PVP treatment enhanced the apatite nucleation ability of BC with higher HAp deposit amount.

关键词： bacterial cellulose hydroxyapatite nanocomposites polyvinylpyrrolidone biomimetic mineralization

Thin-film flow technology in controlling the organization of materials and their properties Special Collection:Distinguished Australian Researchers

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Aggregate 2024年第1期5卷 115-129页

作者： Clarence Chuah xuan Luo Javad Tavakoli Youhong tang Colin L.Raston Flinders Institute for Nanoscale Science and Technology College of Science and EngineeringFlinders UniversityAdelaideSouth AustraliaAustralia Centre for Health Technologies School of Biomedical EngineeringFaculty of Engineering and Information TechnologyUniversity of Technology SydneySydneyNew South WalesAustralia

Centrifugal and shear forces are produced when solids or liquids *** systems and devices that use these forces,such as dynamic thin-film flow technology,are evolving continuously,improve material structure-property relationships at the nanoscale,representing a rapidly thriving and expanding field of research high with green chemistry metrics,consolidated at the inception of *** vortex fluidic device(VFD)provides many advantages over conventional batch processing,with fluidic waves causing high shear and producing large surface areas for micro-mixing as well as rapid mass and heat transfer,enabling reactions beyond diffusion *** these abilities allows for a green and innovative approach to altering materials for various research and industry applications by controlling small-scale flows and regulating molecular and macromolecular chemical reactivity,self-organization phenomena,and the synthesis of novel *** review highlights the aptitude of the VFD as clean technology,with an increase in efficiency for a diversity of top-down,bottom-up,and novel material transformations which benefit from effective vortex-based processing to control material structure-property relationships.

关键词： material nanoscale structure-property relationship thin film flow technology vortex fluidic device

A New Farnesyl Diphosphate Synthase Gene from Taxus media Rehder:Cloning,Characterization and Functional Complementation

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Journal of Integrative Plant Biology 2006年第6期48卷 692-699页

作者： Zhi-Hua Liao Min Chen Yi-Fu Gong Zhu-Gang Li Kai-Jing Zuo Peng Wang Feng Tan Xiao-Fen Sun Ke-xuan tang State Key Laboratory of Genetic Engineering School of Life Sciences Fudan-SJTU-Nottingham Plant Biotechnology R＆D Center Morgan-Tan International Center for Life Sciences Fudan University Shanghai 200433 China Laboratory of Natural Products and Metabofic Engineering Institute of Biotechnology Chongqing Sweetpotato Research Center School of Life Sciences Southwest University Chongqing 400715 China Plant Biotechnology Research Center Fudan-SJTU-Nottingham Plant Biotechnology R＆D Center School of Agriculture and Biology Shanghai Jiaotong University Shanghai 200030 China Faculty of Life Sciences and Biotechnology Ningbo University Ningbo 315211 China

Farnesyl dlphosphate synthase （FPS; EC 2.***.1.10） catalyzes the production of 15-carbon farnesyl dlphosphate which Is a branch-point Intermediate for many terpenoids. This reaction Is considered to be a ratelimiting step In terpenold biosynthesis. Here we report for the first time the cloning of a new full-length cDNA encoding farnesyl dlphosphate synthase from a gymnosperm plant species, Taxus media Rehder, designated as TmFPS1. The full-length cDNA of TmFPS1 （GenBank accession number： AY461811） was 1 464 bp with a 1 056-bp open reading frame encoding a 351-amino acid polypeptlde with a calculated molecular weight of 40.3 kDa and a theoretical pl of 5.07. Biolnformatlc analysis revealed that TmFPS1 contained all five conserved domains of prenyltransferases, and showed homology to other FPSs of plant origin. Phylogenetlc analysis showed that farnesyl dlphosphate synthases can be divided Into two groups： one of prokaryotic origin and the other of eukaryotic origin. TmFPS1 was grouped with FPSs of plant origin. Homologybased structural modeling showed that TmFPS1 had the typical spatial structure of FPS, whose most prominent structural feature Is the arrangement of 13 core helices around a large central cavity In which the catalytic reaction takes place. Our blolnformatic analysis strongly suggests that TmFPS1 is a functional gene. Southern blot analysis revealed that TmFPS1 belongs to a small FPSgene family in T. media. Northern blot analysis indicated that TmFPS1 is expressed in all tested tissues, Including the needles, stems and roots of T. media. Subsequently, functional complementatlon with TmFPS1 in a FPS-deflclent mutant yeast demonstrated that TmFPS1 did encode farnesyl dlphosphate synthase, which rescued the yeast mutant. This study will be helpful In future Investigations aiming at understanding the detailed role of FPS In terpenold biosynthesis flux control at the molecular genetic level.

关键词： farnesyl diphosphate synthase rapid amplification of cDNA ends Taxus media yeast complementation

非常规油气藏水基压裂液流变、携砂与破胶性能实验研究

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阀门 2024年第6期 754-759页

作者：马子豪姜顺东唐志轩宋函择续化蕾汪杰长江大学非常规油气省部共建协同创新中心湖北武汉430100 油气钻采工程湖北省重点实验室湖北武汉430100 长江大学石油工程学院湖北武汉430100

滑溜水压裂液替代瓜尔胶压裂液并应用于非常规油气压裂液已取得巨大成功,但常规滑溜水压裂液携砂性能较差这一缺点无法得到有效的解决。因此,在常规滑溜水的基础上,提出了粘度可调的变粘滑溜水体系。为了明确瓜胶压裂液、常规滑溜水压... 详细信息

滑溜水压裂液替代瓜尔胶压裂液并应用于非常规油气压裂液已取得巨大成功,但常规滑溜水压裂液携砂性能较差这一缺点无法得到有效的解决。因此,在常规滑溜水的基础上,提出了粘度可调的变粘滑溜水体系。为了明确瓜胶压裂液、常规滑溜水压裂液和变粘滑溜水压裂液三种体系之间的差异,本文系统性评价与比较了三种体系的流变、携砂与破胶性能,并结合非常规油气藏储层特征与开发技术难点,分析三种体系之间存在的优缺点。研究表明:相较于瓜胶压裂液和常规的滑溜水,变粘滑溜水在兼顾了增粘与携砂性能的基础上,也表现出了良好的破胶性能及低残渣含量的特点。此外,它还具备一定的减阻性能,使其成为未来常规压裂液体系的主要潜在替代产品。本研究为其他研究非常规油气藏水基压裂液技术的科研人员提供一定的借鉴。

关键词：非常规油气藏水基压裂液流变特性携砂性能残渣含量

Single-atom Ni-N_(4) for enhanced electrochemical sensing

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Nano Research 2024年第8期17卷 7658-7664页

作者： Zhuhui Qin Bo tang Guiru Zhang Chongqing Zhu Kun Jiang Bowei Zhang Fu-Zhen xuan Shanghai Key Laboratory of Intelligent Sensing and Detection Technology East China University of Science and TechnologyShanghai 200237China Key Laboratory of Pressure Systems and Safety of Ministry of Education East China University of Science and TechnologyShanghai 200237China School of Mechanical and Power Engineering East China University of Science and TechnologyShanghai 200237China Key Laboratory of Theoretical and Computational Photochemistry Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100875China Interdisciplinary Research Center School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Single-atom catalysts(SACs)attract widespread attention in heterogeneous catalysis due to their maximum atomic utilization efficiency and unique physical and chemical ***,their applications in chemical sensing keep huge potential but remain ***,a Ni-N_(4)-C SAC was synthesized for the trace detection of dopamine(DA)and uric acid(UA).The Ni-N_(4)-C SAC exhibited superior sensing performance compared to the Ni *** detection range for DA and UA were 0.05–75μM and 5–90μM with detection limits of 0.027 and 0.82μM,*** functional theory(DFT)computations indicate that Ni-N_(4)-C has a lower reaction barrier during electrochemical process,indicating that the atomic Ni sites possess higher intrinsic activity than Ni ***,DA and UA show strong potential dependency on the Ni-N_(4)-C catalyst,indicating its applicability for their concurrent *** work extends the application of SACs in chemical sensing.

关键词： single-atom catalysts chemical sensing dopamine uric acid