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化学学报 1987年第8期45卷 731-736页

作者：赵明汪正浩胡志彬北京师范大学化学系北京师范大学化学系北京

本文采用电化学方法-ESR检测联用装置,研究了胞嘧啶在阴极上还原产生自由基的ESR参数及其结构;同时研究了这一自由基的动力学性质,发现继电化学还原之后的化学反应也能产生自由基,提出并验证了相应的反应机理,求出有关的动力学参数.

关键词：自由基动力学性质 ESR 化学还原胞嘧啶核酸碱基

Deep Learning Aided SCL Decoding of Polar Codes with Shifted-Pruning

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China Communications 2023年第1期20卷 153-170页

作者： Yang Lu mingmin zhao ming Lei Chan wang Minjian zhao College of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 310027China Zhejiang Provincial Key Laboratory of Information Processing Communication and Networking(IPCAN)Hangzhou 310027China

Recently,a generalized successive cancellation list(SCL)decoder implemented with shiftedpruning(SP)scheme,namely the SCL-SP-ωdecoder,is presented for polar codes,which is able to shift the pruning window at mostωtimes during each SCL re-decoding attempt to prevent the correct path from being *** candidate positions for applying the SP scheme are selected by a shifting metric based on the probability that the elimination ***,the number of exponential/logarithm operations involved in the SCL-SP-ωdecoder grows linearly with the number of information bits and list size,which leads to high computational *** this paper,we present a detailed analysis of the SCL-SP-ωdecoder in terms of the decoding performance and complexity,which unveils that the choice of the shifting metric is essential for improving the decoding performance and reducing the re-decoding attempts ***,we introduce a simplified metric derived from the path metric(PM)domain,and a custom-tailored deep learning(DL)network is further designed to enhance the efficiency of the proposed simplified *** proposed metrics are both free of transcendental functions and hence,are more hardware-friendly than the existing *** results show that the proposed DL-aided metric provides the best error correction performance as comparison with the state of the art.

关键词： polar codes successive cancellation list decoding deep learning shifted-pruning path metric

Fluorescent carbon dots synthesized in solid phase and air for application in LEDs

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Nano Research 2024年第9期17卷 8495-8503页

作者： Wei-Jie Zheng zhao-Nan Sun Yi-ming wang Huan-ming Xiong Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan UniversityShanghai 200438China

Carbon dots(CDs)have been widely adopted as optical materials because of their excellent luminescent ***,most of the reported synthetic methods are conducted in solvents,especially hydrothermal/solvothermal reactions,leading to intractable problems such as toxic and flammable solvents,complex and inseparable by-products,and dangerously high pressures and ***-phase synthesis of CDs in air is an effective solution to overcome the above issues,but solid reactions always result in uncontrolled growth and agglomeration of *** this study,some inorganic salts are selected as catalysts for synthesizing CDs in solid states and air,which also play as dispersants to hinder CDs *** the meantime,some aromatic derivatives containing hydroxyl and amino groups are chosen as carbon sources,ground with the optimized catalyst,and then heated together in *** production yields are affected by the reaction time and reactant ratio,while the graphitization degrees of the CDs are determined by the reaction *** IG/ID value of their Raman spectra increases from 0.59 to 0.85,and the particle size decreases from 2.5 to 1.4 nm when the synthesis temperature is increased from 200 to 280℃.The as-prepared CDs show emission peaks ranging from 366 to 606 nm,with the photoluminescence(PL)quantum yield up to 53%.Their emission color variation mainly results from different carbon sources,which can be ascribed to the differences in the element composition,functional groups,and graphitic nitrogen content of these *** dispersing CDs of different concentrations into polyvinyl alcohol(PVA)and combining them with blue LEDs,cold,standard,and warm white light emitting devices(WLEDs)are prepared,with a color rendering index(CRI)up to *** the as-prepared CDs have antioxidant ability at high temperature,the as-prepared WLEDs have long lifespans,remaining the effective white luminescence after 72 h continuous work.

关键词： carbon dot solid-phase synthesis white LED photoluminescence inorganic salt catalysis

Wave-electric field coupling imaging diagnostic method for filled subgrade

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Journal of Mountain Science 2017年第2期14卷 382-389页

作者： wang Kui zhao ming-jie SUN Xiao Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education Chongqing Jiaotong UniversityChongqing 400074China School of Hydraulic and Ecology Engineering Nanchang Institute of TechnologyNanchang 330099China

Thick earth-rock filled embankment of large earthwork volume often occurs during the construction of expressways in mountainous and hilly areas. The compaction quality of earth-rock filled subgrade will directly affect the settlement deformation and stability of the embankment after filled. Therefore, effective evaluation on the compaction quality of the earth-rock filled subgrade is an unsolved critical technical issue to control the construction quality of highway engineering. Based on the wave propagation and electrical resistivity characteristics of the earth and rock fillings, a theoretical model of the compaction quality detection by wave-electric field coupling imaging diagnostic method was established. Then, two filled subgrade models containing cavities and heterogeneous bodies respectively were make separately, and by the wave velocity testing and electrical resistivity testing, the wave-electric field coupling imaging diagnostic method was applied to these two model. The result shows that it is feasible to use the wave testing technique and the electrical resistivity testing technique for a diagnostic test of the subgrade compaction quality. Based on the abnormal areas reflected by the wave velocity imaging and electrical resistivity imaging results, we are able to analyze the scope and site of distress but not able to quantitatively evaluate the subgrade compaction quality. We can accurately qualitatively analyze the subgrade compaction quality based on the wave-electric field coupling calculation model of fill subgrade quality proposed by this paper.

关键词： Filled subgrade : Compaction quality Wave-electric field coupling imaging Diagnosis Expressway construction

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在电子耳蜗CIS方案中语音增强算法的实现

上海生物医学工程 2001年第2期22卷 9-13页

作者：戴逸民赵明王正方中国科技大学合肥230026

目的:电子耳蜗是一个帮助聋人恢复听觉的装置。它根据人耳的仿生学原理,用有限个电极刺激神经以恢复聋人听觉。目前实际应用的电子耳蜗技术已经能够在安静环境下帮助聋人恢复一定的听觉。本文在使用CIS方案的基础上,采取了频谱增强的方... 详细信息

目的:电子耳蜗是一个帮助聋人恢复听觉的装置。它根据人耳的仿生学原理,用有限个电极刺激神经以恢复聋人听觉。目前实际应用的电子耳蜗技术已经能够在安静环境下帮助聋人恢复一定的听觉。本文在使用CIS方案的基础上,采取了频谱增强的方法,以提高电子耳蜗在噪声环境下的性能。另外采用计算机仿真及声音合成的方法,以评估耳蜗植入者听到的声音。本实验获得了比较好的试听效果。其中提出的方法对电子耳蜗的研究和工程实现具有一定的意义。

关键词：电子耳蜗连续交替采样谱对比度

One Novel Red-luminescent Coordination Polymer of Eu-p-ben- zenedicarboxylate with Nitrogen-donor-containing Lewis Base

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Chinese Chemical Letters 2003年第1期14卷 94-95页

作者： ming zhao wang Guan Liang CAI 等 DepartmentofChemistry BeijingNormalUniversityBeijing100875 ChemicalDefenseInstitute PLABeijing102205

The crystal structure of novel coordination polymer with excellent characteristic luminescence of Eu3+, the three-dimentional network of {Eu2(p-BDC)3(Phen)2(H2O)2}n is presented.

关键词： Europium p-benzenedicarboxylate Phenanthroline coordination polymer lumines- cence.

Visible Light-Induced[3+2]Annulation Reaction of Alkenes with Vinyl Azides:Direct Synthesis of Functionalized Pyrroles

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Chinese Journal of Chemistry 2024年第2期42卷 151-156页

作者： ming Yang Xin-Yu wang Jie wang Yu-Long zhao Jilin Province Key Laboratory of Organic Functional Molecular Design&Synthesis Faculty of ChemistryNortheast Normal UniversityChangchunJilin 130024China

A photocatalytic[3+2]annulation of alkenes with vinyl azides was developed under irradiation by visible light in the presence of organic dye *** substrate scope and high functional group tolerance were demonstrated by more than 50 *** reaction provides a novel and efficient method for the synthesis of polyfunctionalized pyrroles under very mild metal-free conditions without other additives.

关键词： Photocatalysis Vinyl azides Alkenes Pyrroles Annulation Radical reactions

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Bmal1在牦牛卵巢中的免疫组化定位

青海畜牧兽医杂志 2019年第5期49卷 18-20,26页

作者：赵明旺张君徐尚荣彭巍舒适黄荣张琳钦青海大学西宁810016 青海大学畜牧兽医科学院西宁810016

采用免疫组化技术检测Bmal1(Brain and muscle arnt-like 1,Bmal1)蛋白在牦牛卵巢中的表达定位。结果显示,在牦牛卵巢中,Bmal1蛋白主要在生殖上皮以及不同大小的卵泡颗粒细胞层中表达。根据试验结果推断Bmal1基因可能参与牦牛卵泡发育... 详细信息

采用免疫组化技术检测Bmal1(Brain and muscle arnt-like 1,Bmal1)蛋白在牦牛卵巢中的表达定位。结果显示,在牦牛卵巢中,Bmal1蛋白主要在生殖上皮以及不同大小的卵泡颗粒细胞层中表达。根据试验结果推断Bmal1基因可能参与牦牛卵泡发育功能的调节。

关键词： Bmal1 牦牛卵巢免疫组化

Green,Sustainable Architectural Bamboo with High Light Transmission and Excellent Electromagnetic Shielding as a Candidate for Energy-Saving Buildings

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Nano-Micro Letters 2023年第1期15卷 209-224页

作者： Jing wang Xinyu Wu Yajing wang Weiying zhao Yue zhao ming Zhou Yan Wu Guangbin Ji College of Furnishings and Industrial Design Nanjing Forestry UniversityNanjing 210037People’s Republic of China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 211100People’s Republic of China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-Dimension MaterialsCollege of Material Science and EngineeringDonghua UniversityShanghai 201620People’s Republic of China

Currently,light-transmitting,energy-saving,and electromagnetic shielding materials are essential for reducing indoor energy consumption and improving the electromagnetic ***,we developed a cellulose composite with excellent optical transmittance that retained the natural shape and fiber structure of *** modified whole bamboo possessed an impressive optical transmittance of approximately 60%at 6.23 mm,illuminance of 1000 luminance(lux),water absorption stability(mass change rate less than 4%),longitudinal tensile strength(46.40 MPa),and surface properties(80.2 HD).These were attributed to not only the retention of the natural circular hollow structure of the bamboo rod on the macro,but also the complete bamboo fiber skeleton template impregnated with UV resin on the ***,a multilayered device consisting of translucent whole bamboo,transparent bamboo sheets,and electromagnetic shielding film exhibited remarkable heat insulation and heat preservation performance as well as an electromagnetic shielding performance of 46.3 *** impressive optical transmittance,mechanical properties,thermal performance,and electromagnetic shielding abilities combined with the renewable and sustainable nature,as well as the fast and efficient manufacturing process,make this bamboo composite material suitable for effective application in transparent,energy-saving,and electromagnetic shielding buildings.

关键词： Electromagnetic interference shielding Biomass material Transmittance Energy-saving Bamboo

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支架式教学在嵌入式驱动设计课程中的应用

高师理科学刊 2017年第10期37卷 87-90页

作者：炎士涛赵明富王应军河南科技学院信息工程学院河南新乡453000

针对传统模式下嵌入式驱动设计课程学生学习积极性不高的现状,分析对比传统教学模式与支架式教学模式的区别,以天嵌2440开发板LED驱动设计为例,阐述支架式教学理论,完成探索任务分解和引导理解,学生主动完成信息构建等一系列教学环节.... 详细信息

针对传统模式下嵌入式驱动设计课程学生学习积极性不高的现状,分析对比传统教学模式与支架式教学模式的区别,以天嵌2440开发板LED驱动设计为例,阐述支架式教学理论,完成探索任务分解和引导理解,学生主动完成信息构建等一系列教学环节.实践证明,引入支架式教学取得了良好的效果,极大地提高了学生的主动性和创造性.

关键词：支架式教学模式知识构建脚手架嵌入式驱动设计