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Circularly polarized luminescence from organic micro-/nano-structures

Light(Science & Applications) 2021年第5期10卷 749-766页

作者： Yonging Deng Mengzhu Wang Yanling zhuang Shujuan Liu Wei Huang qiang Zhao State Key Laboratory of Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)&Institute of Flexible Electronics(Future Technology)Nanjing University of Posts&Telecommunications(NUPT)9 Wenyuan Road210023NanjingJiangsuChina Frontiers Science Center for Flexible Electronics(FSCFE) MIIT Key Laboratory of Flexible Electronics(KLoFE)Northwestern Polytechnical University(NPU)127 West Youyi Road710072Xi’anShaanxiChina College of Electronic and Optical Engineering&College of Microelectronics Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and DevicesNanjing University of Posts and Telecommunications(NUPT)9 Wenyuan Road210023NanjingJiangsuChina

Circularly polarized light exhibits promising applications in future displays and photonic *** polarized luminescence(CPL)from chiral luminophores is an ideal approach to directly generating circularly polarized light,in which the energy loss induced by the circularly polarized filters can be *** various chiral luminophores,organic micro-/nano-structures have attracted increasing attention owing to the high quantum efficiency and luminescence dissymmetry ***,the recent progress of CPL from organic micro-/nano-structures is ***,the design principles of CPL-active organic micro-/nano-structures are expounded from the construction of micro-/nano-structure and the introduction of *** on these design principles,several typical organic micro-/nano-structures with CPL activity are introduced in detail,including self-assembly of small molecules,self-assembly ofπ-conjugated polymers,and self-assembly on micro-/nanoscale ***,we discuss the external stimuli that can regulate CPL performance,including solvents,pH value,metal ions,mechanical force,and *** also summarize the applications of CPL-active materials in organic light-emitting diodes,optical information processing,and chemical and biological ***,the current challenges and prospects in this emerging field are *** is expected that this review will provide a guide for the design of excellent CPL-active materials.

关键词： temperature. materials. polarized

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In situ synthesis of a porous high-Mn and high-Al steel by a novel two-step pore-forming technique in vacuum sintering

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Journal of Materials Science & Technology 2020年第4期39卷 82-88页

作者： Chuanbing zhuang Zhigang Xu Shangyu Huang Yu Xia Chuanbin Wang qiang Shen Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Engineering Research Center for Green Precision Materials Forming Wuhan University of TechnologyWuhan 430070China

In this work, a novel in-situ two-step pore-forming process in vacuum sintering(ITPVS) technique combining low-temperature processing to produce open pores through the interdiffusion among the intrinsic components in the base steel, and subsequent high-temperature processing to further improve the porosities by the sublimation of Mn via previously formed open pores, was proposed to produce a lab-scale porous Fe Mn Al steel. For the first time, a high-Mn and high-Al steel with open and overall porosities of ~59.6 vol.% and ~63.7 vol.%(percent in volume, vol.%) was synthesized by isothermal holding of the quaternary elemental Fe/Mn/Al/C powder mixture at 640℃ for 1 h and the subsequent sintering at 1200℃ for 1 h. Elemental Al partly incorporated into/reacted with α-Fe and α-Mn after sintering at640℃ for 1 h, leading to the overall and open porosities promoting by ~26.6 vol.% and ~25.6 vol.%. After sintering at 1200℃, Fe Mn Al steel with increased porosities mainly comprising of austenite and α-Fe obtained. The compression strength and corresponding strain of the 1200℃-sintered porous specimen without crack on the surface was ~75 MPa and ~25%. The ITPVS technique takes advantage of using the intrinsic components like Al, Mn and Fe in steels to produce porous structure. This is beneficial to avoiding the contamination of the Fe Mn Al steel matrix caused by the employment of the foreign pore-forming agents.

关键词： Porous metal High manganese steel Two-stage sintering Reaction-diffusion Sublimation method

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Gelfand–Kirillov Dimension and Reducibility of Scalar Generalized Verma Modules

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Acta Mathematica Sinica,English Series 2019年第11期35卷 1854-1860页

作者： Zhan qiang BAI Wei xiao School of Mathematical Sciences Soochow UniversitySuzhou 215006P.R.China College of Mathematics and statistics Shenzhen Key Laboratory of Advanced Machine Learning Applications Shenzhen UniversityShenzhen 518060P.R.China

The Gelfand–Kirillov dimension is an invariant which can measure the size of infinitedimensional algebraic structures. In this article, we show that it can also measure the reducibility of scalar generalized Verma modules. In particular, we use it to determine the reducibility of scalar generalized Verma modules associated with maximal parabolic subalgebras in the Hermitian symmetric case.

关键词： Gelfand–Kirillov dimension generalized Verma module reducibility

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食品4D打印技术在食品工业中的应用进展

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食品工业科技 2025年第1期46卷 424-430页

作者：童强肖帅磊毕野吴豪董秀萍大连工业大学机械工程与自动化学院辽宁大连116034 海洋食品加工与安全控制全国重点实验室国家海洋食品工程技术研究中心辽宁省海产品精深加工产业共性技术创新平台大连市中式预制食品技术创新中心辽宁大连116034 大连工业大学食品交叉科学研究院辽宁大连116034

4D打印技术作为在3D打印的基础上增加了“时间”这个维度的新兴打印技术,不仅可以在三维空间内构建复杂结构,还能通过材料的预设形变来实现打印物体的自我组装和形态变化。4D打印技术作为新一代的增材制造技术,因演变过程完全可预测、... 详细信息

4D打印技术作为在3D打印的基础上增加了“时间”这个维度的新兴打印技术,不仅可以在三维空间内构建复杂结构,还能通过材料的预设形变来实现打印物体的自我组装和形态变化。4D打印技术作为新一代的增材制造技术,因演变过程完全可预测、可设计和可控制的特点,其潜力和影响力正在不断扩大。近年来,4D打印技术在现代食品加工领域也得到了广泛的研究和应用,通过4D打印实现食品结构、营养成分、口感等特性的精准控制。本文综述了食品4D打印技术原理、要素及优势,分析了食品4D打印在现代食品加工领域中的应用进展,包括4D打印材料特性、外界刺激等方面,并重点探讨了4D打印智能食品的微观结构控制与口感之间的关系,最后展望了食品4D打印技术发展趋势和挑战,旨在为现代食品加工领域提供参考借鉴。

关键词： 4D打印增材制造食品加工外界刺激微结构控制

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Experimental and Numerical Investigation of Impingement Heat Transfer on Target Plate with Streamlined Roughness Element at Maximum Crossflow Condition

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Journal of Thermal Science 2022年第3期31卷 751-764页

作者： WU zhuang ZHU Huiren GAO qiang LIU Cunliang LI Lin ZHANG Zheng School of Power and Energy Northwestern Polytechnical UniversityXi’an710071China Shaanxi Key Laboratory of Thermal Sciences in Aero-engine System Xi’an710071China

A combined experimental and numerical investigation of the heat transfer and flow characteristics of the roughened target plate has been *** the data are compared with the flat *** novel streamlined roughness elements are proposed:similar round protuberance,similar trapezoidal straight rib,and similar trapezoidal curved *** experiments are carried out in a perspex model using the transient thermochromic liquid crystal *** effect of jet Reynolds number,rib height,and rib shape on the Nusselt number and flow discharge coefficient has been *** ribs provide higher heat transfer *** curved ribs provide better heat transfer *** the experimental scope,combined straight rib plate and combined curved rib plate increase the area averaged Nusselt number by 11.5%and 13.8%*** experiment is complemented by a numerical part,which can provide flow field analysis and the Nusselt number on the surface of the small size roughness *** numerical results show the protuberance can shorten the nozzle to plate distance and make the shifting point move *** ribs have a guidance effect on crossflow and reduce the transverse interference to the downstream *** transferred heat flux caused by the side surface of the roughness element is very *** heat flux contributed by the side surface of the protuberance and ribs can reach 26%and 10%respectively.

关键词： impingement cooling roughness element heat transfer flow discharge coefficient

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Synthesis, Crystal Structure and Properties of a Copper(Ⅰ) Coordination Polymer Based on Benzimidazole Derivative

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Chinese Journal of Structural Chemistry 2020年第11期39卷 2021-2026页

作者： JIA qiang-qiang LI Jun-Yi ZHANG Hao-Xi CHEN Li-zhuang WANG Guo-Xi School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

A novel copper(I) coordination polymer [C30 H18 Cu3 Cl3 N4]n was solvethermally synthesized with 1-(prop-2-en-1-yl)-2-{4-[1-(prop-2-en-1-yl)-1 H-1,3-benzodiazol-2-yl]phenyl}-1 H-1,3-benzodiazole as the flexible ligand. It crystalizes in orthorhombic system, space group Pbcn with a = 22.0890(7), b = 6.3626(2), c = 18.2480(6) ?, V = 2564.64(14) ?3 and Mr = 365.73. The compound characterized by elemental analysis, infrared spectroscopy and powder X-ray diffraction analysis displays a 2 D structure. The complex shows strong green luminescence at 506 nm and better property of electrochemical oxygen evolution.

关键词： bisbenzimidazole ligand copper(Ⅰ)coordination polymer crystal structure electrocatalytic property

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Entanglement of Two-Qubit Quantum Heisenberg XYZ Chain

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Chinese Physics Letters 2002年第8期19卷 1044-1047页

作者： Xi xiao-qiang, Hao San-Ru Institute of Modern Physics Northwest University Fundamental Department Xi"an Institute of Posts and Telecommunications

We derive the analytic expression of the concurrence in the quantum Heisenberg XYZ model and discuss the influence of parameters J, Δ and Γ on the concurrence. By choosing different values of Γ and Δ, we obtain the XX, XY, XXX and XXZ chains. The concurrence decreases with increasing temperature. When T→0, the concurrence reaches its maximum value 1, i.e. the entangled state, |Ψ> = (((2)^1/2)/2)(|01>-|10>), is maximum entanglement. For the XXZ chain, when , the concurrence will meet its maximum value Cmax = (sinh (1/T))/(cosh (1/T)).

关键词： Chains

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Grape size detection and online gradation based on machine vision

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International Journal of Agricultural and Biological Engineering 2017年第1期10卷 226-233页

作者： Wang Qiaohua Tang Yihua xiao zhuang College of Engineering Huazhong Agricultural UniversityWuhan 430070China

This research investigated the size detecting and online grading of Red Globe grapes using images of entire cases,rather than individual *** of ellipse fitting based on iterative least median squares was proposed and the process of grape grading includes the following four steps:stem removal from the RGB and NIR images collected by the 2-CCD camera;edge extraction by multiple methods of edge detection,image binarization,morphological processing,et al.;size determination of individual grapes by using image segmentation and ellipse fitting to calculate short axis length;Finally,grading based on the 15%downgrade principle,this means that if the case contains more than 15%of multiple grades,then the case is ***-eight cases of Red Globe grapes were graded using these methods and 35 cases were correctly graded with an accuracy rate reaching 92.1%.The results showed that the accuracy and speed meet the requirements of grape automatic online detection.

关键词： machine vision Red Globe grape iterative least median squares ellipse fitting gradation

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Pointwise A Priori Estimates for Solutions to Some p-Laplacian Equations

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Acta Mathematica Sinica,English Series 2022年第12期38卷 2150-2162页

作者： xiao qiang SUN Ji Guang BAO School of Mathematics Sun Yat-sen UniversityGuangzhou 510275P.R.China School of Mathematical Sciences Beijing Normal UniversityLaboratory of Mathematics and Complex SystemsMinistry of EducationBeijing 100875P.R.China

In this article,we apply blow-up analysis to study pointwise a priori estimates for some p-Laplacian equations based on Liouville type *** newly developed analysis techniques,we first extend the classical results of interior gradient estimates for the harmonic function to that for the p-harmonic function,i.e.,the solution ofΔpu=0,x∈Ω.We then obtain singularity and decay estimates of the sign-changing solution of Lane-Emden-Fowler type p-Laplacian equation-Δp^(u)=|u|^(λ-1)u,x∈Ω,which are then extended to the equation with general right hand term f(x,u)with certain asymptotic *** addition,point wise estimates for higher order derivatives of the solution to Lane-Emden type p-Laplacian equation,in a case of p=2,are also discussed.

关键词： Priori estimates Blow-up analysis p-Laplacian

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Current understanding of ELF4 deficiency:a novel inborn error of immunity

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World Journal of Pediatrics 2024年第5期20卷 444-450页

作者： Hong-qiang Du xiao-Dong Zhao Department of Rheumatology&Immunology National Clinical Research Center for Child Health and DisordersMinistry of Education Key Laboratory of Child Development and DisordersChongqing Key Laboratory of Child Rare Diseases in Infection and ImmunityChildren’s Hospital of Chongqing Medical UniversityZhongshan Er Road 136Yuzhong DistrictChongqingChina

Background ELF4 deficiency has been recently recognized as a novel disorder within the spectrum of inborn errors of immunity(IEIs),specifically categorized as a“disease of immune dysregulation.”Cases of this condition,reported by our team and others,are very limited *** such,our current knowledge of this new disease remains *** review aims to provide a brief overview of the clinical manifestations,pathogenesis,and treatment strategies for this novel *** sources A comprehensive review was conducted after an extensive literature search in the PubMed/Medline database and websites concerning transcriptional factor ELF4 and reports concerning patients with ELF4 *** search strategy was“ELF4 OR ETS-related transcription factor Elf-4 OR EL4-like factor 4 OR myeloid Elf-1-like factor”as of the time of manuscript *** The current signature manifestations of ELF4 deficiency disorder are recurrent and prolonged oral ulcer,abdominal pain,and diarrhea in pediatric *** some cases,immunodeficiency and autoimmunity can also be *** Sanger sequencing or whole exome sequencing can be used to detect variation in ELF4 *** blotting for ELF4 expression of the patient’s cells can confirm the pathogenic effect of the *** fully confirm the pathogenicity of the variant,further functional test is strongly *** and biologics are the mainstream management of ELF4 deficiency *** Pediatric males presenting with recurring ulcerations in digestive tract epithelium with or without recurrent fever should be suspected of *** atypical presentations are prominent,variations in ELF4 gene should be carefully evaluated functionally due to the complex nature of ELF4 *** of treating DEX includes use of glucocorticoid and biologics and more precise treatment needs more patients to identify and further mechanistic study.

关键词： ELF4 transcription factor Immune dysregulation Inborn errors of immunity Mechanism Recurrent infections

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