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Single-Component Color-Tunable Smart Organic Emitters with Simultaneous Multistage Stimuli-Responsiveness and Multimode Emissions

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Research 2024年第2期2023卷 719-728页

作者： Yu Yan Chengfang Liu Jianzhong Fan Yusheng Li Huanling Liu Qian Wang Xiangchun lil Junfeng Li Wen-Yong Lai State Key Laboratory of Organic Electronics and Information Displays(SKLOEID) Institute of Advanced Materials(IAM)School of Chemistry and Life SciencesNanjing University of Posts&Telecommunications9 Wenyuan RoadNanjng 210023China Shandong Province Key Laboratory of Medical Physics and Image Processing Technology School of Physics and ElectronicsShandong Normal UniversityJinan 250358China

Achieving color-tunable emission in single-component organic emitters with multistage stimuli-responsiveness is of vital significance for intelligent optoelectronic applications,but remains enormously ***,we present an unprecedented example of a color-tunable single-component smart organic emitter(DDOP)that simultaneously exhibits multistage stimuli-responsiveness and multimode *** based on a highly twisted amide-bridged donor-tcceptor-donor structure has been found to facilitate intersystem crossing,form multimode emissions,and generate multiple emissive species with multistage *** pristine crystalline powders exhibit abnormal excitation-dependent emissions from a monomer-dominated blue emission centered at 470 nm to a dimer-dominated yellow emission centered at 550 nm through decreasing the ultraviolet(UV)excitation wavelengths,whereas DDOP single crystals show a wide emission band with a main emission peak at 585 nm when excited at different *** emission behaviors of pristine crystalline powders and single crystals are different,demonstrating emission features that are closely related to the aggregation *** work has developed color-tunable single-component organic emitters with simultaneous multistage stimuli-responsiveness and multimode emissions,which is vital for expanding intelligent optoelectronic applications,including multilevel information encryption,multicolor emissive patterns,and visual monitoring of UV wavelengths.

关键词： donor excitation Smart

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国医大师潘敏求从脾胃论治食管癌经验

中华中医药杂志 2024年第7期39卷 3448-3451页

作者：王莉宋程唐蔚湖南省肿瘤医院长沙410031 湖南中医药大学长沙410208 湖南省中医药研究院附属医院长沙410006

食管癌是我国常见的消化道肿瘤之一,中医药治疗有着独特的优势。潘敏求教授从医五十余载,总结出其病位在食管,属脾胃所主,病机以脾胃亏虚为本,痰瘀毒结为标,病机传变在肝与肾;治疗上始终把握脾胃枢机之根本,以健脾理气、和胃降浊为主要... 详细信息

食管癌是我国常见的消化道肿瘤之一,中医药治疗有着独特的优势。潘敏求教授从医五十余载,总结出其病位在食管,属脾胃所主,病机以脾胃亏虚为本,痰瘀毒结为标,病机传变在肝与肾;治疗上始终把握脾胃枢机之根本,以健脾理气、和胃降浊为主要治则,参用化痰、祛瘀、解毒,同时重视补脾疏肝、培补脾肾,灵活化裁,系统调治,以恢复脾胃功能,则气机调畅,生机得复。

关键词：食管癌脾胃经验潘敏求国医大师

Surface plasmon polariton waveguides with subwavelength confinement

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Chinese Physics B 2018年第9期27卷 73-87页

作者： Longkun Yang Pan lil Hancong Wang Zhipeng lil The Beijing Key Laboratory for Nano-Photonics and Nano-Structure（NPNS） Center for Condensed Matter PhysicsDepartment of PhysicsCapital Normal UniversityBeijing 100048China The Fujian Provincial Key Laboratory of Automotive Electronics and Electric Drive School of Information Science and EngineeringFujian University of TechnologyFuzhou 350108China

Surface plasmon polaritons（SPPs） are evanescent waves propagating along metal-dielectric interfaces, which provide an effective way to realize optical wave guiding with subwavelength confinement. Metallic nanostructures supporting SPPs,that is, plasmonic waveguides, are considered as required components to construct nanophotonic devices and circuits with a high degree of miniaturization and integration. In this paper, various types of plasmonic waveguides operating in the visible, infrared, and terahertz regions are reviewed, and the status of the research on their fundamentals, fabrications,and applications is provided as well. First, we discuss the mechanisms of SPPs beyond the diffraction limit, and their launching methods. Then, the characteristics of SPPs on various plasmonic waveguides are reviewed, including top-down and bottom-up fabricated types. Considering applications, certain prototypes of plasmonic devices and circuits constructed by plasmonic waveguides for bio/chemo sensing, router, and light modulation are demonstrated. Finally, a summary and future outlook of plasmonic waveguides are given.

关键词： waveguides surface plasmon polaritons dispersion relations nanowires

A Bayesian hierarchical model for analyzing methylated RNA immunoprecipitation sequencing data

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Frontiers of Electrical and Electronic Engineering in China 2018年第3期6卷 275-286页

作者： Minzhe Zhangl Qiwei lil Yang Xie Quantitative Biomedical Research Center Department of Clinical SciencesU.T.Southwestern Medical CenterDallasTX 75390USA Department of Bioinformatics U.T.Southwestern Medical CenterDallasTX 75390USA Simmons Comprehensive Cancer Center U.T.Southwestern Medical CenterDallasTX 75390USA

Background： The recently emerged technology of methylated RNA immunoprecipitation sequencing （MeRIP-seq） sheds light on the study of RNA epigenetics. This new bioinformatics question calls for effective and robust peaking calling algorithms to detect mRNA methylation sites from MeRIP-seq data. Methods： We propose a Bayesian hierarchical model to detect methylation sites from MeRIP-seq data. Our modeling approach includes several important characteristics. First, it models the zero-inflated and over-dispersed counts by deploying a zero-inflated negative binomial model. Second, it incorporates a hidden Markov model （HMM） to account for the spatial dependency of neighboring read enrichment. Third, our Bayesian inference allows the proposed model to borrow strength in parameter estimation, which greatly improves the model stability when dealing with MeRIP-seq data with a small number of replicates. We use Markov chain Monte Carlo （MCMC） algorithms to simultaneously infer the model parameters in a de novo fashion. The R Shiny demo is available at https：//qiwei. ***/BaySeqPeak and the R/C ＋＋ code is available at https：//***/liqiwei2000/BaySeqPeak. Results： In simulation studies, the proposed method outperformed the competing methods exomePeak and MeTPeak, especially when an excess of zeros were present in the data. In real MeRIP-seq data analysis, the proposed method identified methylation sites that were more consistent with biological knowledge, and had better spatial resolution compared to the other methods. Conclusions： In this study, we develop a Bayesian hierarchical model to identify methylation peaks in MeRIP-seq data. The proposed method has a competitive edge over existing methods in terms of accuracy, robustness and spatial resolution.

关键词： MeRIP-seq data RNA epigenomics Bayesian inference hidden Markov model zero-inflated negativebinomial

Strain-Rate-Dependent In-Plane Compressive Properties of 3D Fine Weave Pierced C/C Composite:Failure Mechanism and Constitutive Model

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Acta Mechanica Solida Sinica 2022年第1期35卷 63-78页

作者： Fei Guo Qingguo Fei Yanbin lil Nikhil Gupta Jiangsu Engineering Research Center of Aerospace Machinery Southeast UniversityNanjing 211189China Department of Engineering Mechanics Southeast UniversityNanjing 211189China School of Mechanical Engineering Southeast UniversityNanjing 211189China Composite Materials and Mechanics Laboratory Department of Mechanical and Aerospace EngineeringTandon School of EngineeringNew York UniversityBrooklynNY 11201USA

In-plane compression experiments are performed on 3D fine weave pierced C/C composite at a wide strain rate range of 0.0001/s-1000/*** in-plane compressive failure mechanism of the composite at quasi-static and high strain rates is analyzed by a scanning electron *** results show that the in-plane compressive modulus,maximum stress and the corresponding strain increase with increasing strain *** quasi-static in-plane compressive failure mode of the 3D fine weave pierced C/C composite is characterized by the shear failure at the angle of 45°and the local buckling of the^direction fiber *** comparison,the high strain rate in-plane compression failure mode of the composite is characterized by the compressive fracture of the interlaminar matrix and the progressive compression failure of the a>direction fiber bundles.A strain-rate-dependent in-plane compressive constitutive model is proposed to predict the dynamic in-plane compressive response of the *** proposed constitutive model is verified by experimental data.

关键词： C/C composite Compression Failure mechanism Constitutive model

Equivalent magnetic dipole method used to design gradient coil for unilateral magnetic resonance imaging

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Chinese Physics B 2018年第5期27卷 545-550页

作者： Zheng Xu Xiang lil Pan Guo Jia-Min Wu State Key Laboratory of Power Transmission Equipment&System Security and New Technology Chongqing UniversityChongqing 400044China School of Physics and Electronic Engineenng Chongqing Normal UniversityChongqing 401331China

The conventional magnetic resonance imaging(MRI)equipment cannot measure large volume samples nondestructively in the engineering site for its heavy weight and closed *** order to realize the mobile MRI,this study focuses on the design of gradient coil of unilateral *** unilateral MRI system is used to image the local area above the *** current density distribution of the gradient coil cannot be used as a series of superconducting nuclear magnetic resonance gradient coils,because the region of interest(ROI)and the wiring area of the unilateral magnet are both cylindrical side arc ***,the equivalent magnetic dipole method is used to design the gradient coil,and the algorithm is improved for the special case of the wiring area and the ROI,so the X and Y gradient coils are ***,a flexible printed circuit board(PCB)is used to fabricate the gradient coil,and the magnetic field distribution of the ROI is measured by a Gauss meter,and the measured results match with the simulation *** gradient linearities of x and y coils are 2.82%and 3.56%,respectively,less than 5%of the commercial gradient coil requirement.

关键词： unilateral MRI equivalent magnetic dipole method gradient coil current density distribution

Electrochemical removal of nitrate in industrial wastewater

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Frontiers of Environmental Science & Engineering 2018年第1期12卷 43-56页

作者： Dong Xu Yang lil Lifeng Yin Yangyuan Ji Junfeng Niu Yanxin Yu State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing 100875 China School of Environment and Civil Engineering Dongguan University of Technology Dongguan 523808 China

A number of recent studies have demonstrated that electrochemical technologies, including electroreduction （ER）, electrocoagulation （EC）, and electrodialysis （ED）, are effbctive in nitrate elimination in wastewater due to their high reactivity. To obtain the maximal elimination efficiency and current efficiency, many researchers have conducted experiments to investigate the optimal conditions （i.e., potential, cun＇ent density, pH value, plate distance, initial nitrate concentration, electrolyte, and other factors） tbr nitrate elimination. The mechanism of ER, EC and ED for nitrate removal has been fully elucidated. The ER mechanism of nitrate undergoes electron transfer and hydrogenation reduction. The EC pathways of nitrate removal include reduction, coagulation and flotation. The ED pathways of nitrate include redox reaction and dialysis. Although the electrochemical technology can remove nitrate from wastewater efficiently, many problems （such as relatively low selectivity toward nitrogen, sludge production and brine generation） still hinder electrochemical treatment implementa- tion. This paper critically presents an overview of the current state-of-the-art of electrochemical denitrification to enhance the removal efficiency and overcome the shortages, and will significantly improve the understanding of the detailed processes and mechanisms of nitrate removal by electrochemical treatment and provide useful information to scientific research and actual practice.

关键词： Nitrate removalElectroreductionElectrocoagulationElectrodialysis

长链非编码核糖核苷酸HLA-DQA2与不明原因复发性流产的关联

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中国优生与遗传杂志 2024年第4期32卷 674-680页

作者：杨丽杨静卜国森韩锐腊晓琳新疆医科大学第一附属医院生殖医学中心新疆乌鲁木齐830011 生殖疾病与出生缺陷综合防治研究中心新疆乌鲁木齐830011 新疆医科大学第一附属医院新疆生殖免疫临床医学研究中心新疆乌鲁木齐830011 新疆医科大学第五附属医院妇科新疆乌鲁木齐830011 新疆医科大学第一附属医院神经内科新疆乌鲁木齐830011 新疆医科大学省部共建中亚高发病成因与防治国家重点实验室新疆乌鲁木齐830011

目的通过对不明原因复发性流产(URSA)孕妇绒毛组织的lncRNA比对参考基因组进行注释,探究URSA中潜在的lncRNA生物学靶点。方法收集4例URSA(实验组)和4例选择性终止妊娠(ETP)孕妇(对照组)的绒毛组织样本,使用StringTie处理并预测各转录本,... 详细信息

目的通过对不明原因复发性流产(URSA)孕妇绒毛组织的lncRNA比对参考基因组进行注释,探究URSA中潜在的lncRNA生物学靶点。方法收集4例URSA(实验组)和4例选择性终止妊娠(ETP)孕妇(对照组)的绒毛组织样本,使用StringTie处理并预测各转录本,DESeq2获得差异表达lncRNA,Kyoto Encyclopedia of Genes and Genomes(KEGG)富集分析对lncRNA反式调控及lncRNA顺式调控潜在通路进行探索。结果使用4种编码潜能分析方法对候选lncRNA进行进一步的筛选,共有474个共表达转录本,接着DESeq2获得差异表达lncRNA,有705个显著上调lncRNA数目和107个显著下调表达lncRNA数目,对差异表达的lncRNA和所有差异表达的基因进行共表达分析,其中lncRNA反式调控分子功能主要作用在蛋白结合,生物过程发生在细胞外基质组织,存在于细胞表面。KEGG结果显示其主要是作用于lncRNA HLA-DQA2进而富集在金黄色葡萄球菌感染通路。lncRNA顺式调控分子功能主要作用在蛋白结合,生物过程发生在RNA聚合酶对转录的调节,存在于核染色质。KEGG富集结果显示其主要是作用于lncRNA HLA-DQA2以及BIRCT进而富集在弓形体病感染通路。结论lncRNA HLA-DQA2可能通过调控炎症感染信号通路导致不明原因复发性流产,其可能成为潜在的治疗靶点。

关键词：不明原因复发性流产绒毛组织长链非编码RNA 转录组测序

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齿轮啮合周期内摩擦载荷变化有限元仿真分析

计算机仿真 2024年第4期41卷 512-516页

作者：闫晓丽崔钺孟丽丽河北省智能装备数字化设计及过程仿真重点实验室河北唐山063000 唐山学院河北唐山063000 华北理工大学机械工程学院河北唐山063000

为能更好地分析齿轮啮合周期中摩擦载荷变化,建立齿轮分析模型,研究齿轮间传动关系,区分齿轮输入端和输出端的阻力扭矩,搭建有限元分析模型。为保证模型的精确度,在前期预处理阶段针对齿轮不同位置的实际情况构建对应网格,区分不同位置... 详细信息

为能更好地分析齿轮啮合周期中摩擦载荷变化,建立齿轮分析模型,研究齿轮间传动关系,区分齿轮输入端和输出端的阻力扭矩,搭建有限元分析模型。为保证模型的精确度,在前期预处理阶段针对齿轮不同位置的实际情况构建对应网格,区分不同位置的网格密度,根据齿轮的轮动比和角位移得出旋转自由度。在齿轮啮合过程中,搭建动力学分析模型,研究摩擦载荷的变化情况,考虑齿轮啮合频率,根据长度线条确定摩擦因数,利用摩擦函数明确齿轮间的最大接触应力和弯曲应力,完成摩擦载荷变化分析。经仿真验证可知,所研究方法能准确描述齿轮啮合周期内摩擦载荷的实时变化。

关键词：齿轮转动啮合周期摩擦载荷主动轴齿轮接触面