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Novel strategy of multidimensional information encryption via multi-color carbon dots aggregation-induced emission

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Nano Research 2024年第6期17卷 5680-5687页

作者： Liu ding Xilang Jin Yuchong Gao Shouwang kang Haiyan Bai Xuehao Ma Taotao Ai Hongwei Zhou Weixing Chen Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province School of Materials and Chemical EngineeringXi’an Technological UniversityXi’an 710021China School of Material Science and Engineering Shaanxi University of TechnologyHanzhong 723000China Department of Materials Science and Engineering University of PennsylvaniaPhiladelphia 19104USA

Carbon dots(CDs)with aggregation-induced emission(AIE)have sparked significant interest in multidimensional anti-counterfeiting due to their exceptional fluorescence ***,the preparation of AIE CDs with multicolor solid-state fluorescence remains a formidable challenge due to its complicated *** the present work,a novel class of multicolor AIE CDs(M-CDs)were fabricated using selected precursor(salicylic acid,thiosalicylic acid,and 2,2'-dithiodibenzoic acid),with an eco-friendly,low-cost one-pot solvothermal *** the dilute organic solution,M-CDs manifested blue emission,but upon aggregation in the presence of water,the red,yellow,green,and blue emissions were displayed due to the AIE *** analysis,coupled with theoretical calculations,revealed that the increase in the size of sp2 domains would lower the Eg and cause a red-shift emission ***,the continuous emission of M-CDs from blue to red can be utilized as ink for multimode printing,enabling the creation of a variety of school badges and quick response *** findings hold promising implications for multi-information encryption applications.

关键词： aggregation-induced emission(AIE) luminescence mechanism multi-color emission information encryption.

Heterotic loci identified for plant height and ear height using two CSSLs test populations in maize

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Journal of Integrative Agriculture 2016年第12期15卷 2726-2735页

作者： WANG Hong-qiu ZHANG Xiang-ge YANG Hui-li CHEN Yong-qiang YUAN Liang LI Wei-hua LIU Zong-hua TANG Ji-hua kang ding-ming College of Agriculture and Biotechnology China Agricultural University National Key Laboratory of Wheat and Maize Crop Science Ministry of Education/Collaborative Innovation Center of Henan Grain CropsCollege of AgronomyHenan Agricultural University College of Agronomy Sichuan Agricultural University

Heterosis is an important biological phenomenon, and it has been used to increase grain yield, quality and resistance to abiotic and biotic stresses in many crops. However, the genetic mechanism of heterosis remains unclear up to now. In this study, a set of 184 chromosome segment substitution lines （CSSLs） population, which derived from two inbred lines Ix9801 （the recurrent parent） and Chang 72 （the donor parent）, were used as basal material to construct two test populations with the inbred lines Zheng 58 and Xun 9058. The two test populations were evaluated in two locations over two years, and the heterotic loci for plant height and ear height were identified by comparing the performance of each test hybrid with the corresponding CK at P〈0.05 significant level using one-way ANOVA analysis and Duncan＇s multiple comparisons. There were 24 and 29 different heterotic loci （HL） identified for plant height and ear height in the two populations at two locations over two years. Three HL （hlPH4a, hlPH7c, hlPHlb） for plant height and three （hlEHld, hlEH6b, hlEHlb） for ear height were identified in the CSSLs×Zheng 58 and CSSLs×Xun 9058 populations as contributing highly to heterosis performance of plant height and ear height across four environments. Among the 29 HL identified for ear height, 12 HL （41.4%） shared the same chromosomal region associated with the HL （50.0%） identified for plant height in the same test population and environment.

关键词： maize CSSLs test population plant height ear height heterotic loci

基于CRISPR/Cas13a系统的发热伴血小板减少综合征病毒快速检测方法的建立

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寄生虫与医学昆虫学报 2024年第3期31卷 153-162页

作者：丁康慧黄俊范娇邱少富刘洪波刘鸿博宋宏彬安徽医科大学公共卫生学院合肥230032 中国人民解放军疾病预防控制中心北京100070 中国医科大学公共卫生学院流行病学教研室沈阳110000

目的建立基于CRISPR(Clustered Regularly Interspaced Short Palindromic Repeats,CRISPR)系统的快速、灵敏的现场发热伴血小板减少综合征病毒(severe fever with thrombocytopenia syndrome virus,SFTSV)核酸检测方法。方法首先,经序列比对分析得到SFTSV S基因特异性保守区,设计并筛选多酶恒温扩增(multienzyme isothermal rapid amplification,MIRA)引物和靶标CRISPR RNA(CRISPR RNA,crRNA),经荧光信号和免疫层析试纸读取检测结果。为提升检测敏感度在单反应体系中加入多个检测靶标crRNA。并利用蜱感染模拟样本和蜱源样本验证该方法对蜱样本现场核酸检测的有效性。结果MIRA-CRISPR/Cas13a荧光法检测SFTSV的最低检测限为1 copy/μL,试纸法的最低检测限为10 copies/μL。特异性实验表明SFTSV与其他4种阴性对照病原均无交叉反应。该方法检测蜱感染模拟样本的灵敏度优于RT-PCR法。应用所建立的方法检测29份蜱源SFTSV样本,共检出20份阳性样本和9份阴性样本,与RT-PCR检测结果符合率为100%。结论本文所建立的方法可用于SFTSV的现场快速检测。

关键词：发热伴血小板减少综合征病毒 CRISPR/Cas13a 等温扩增蜱核酸检测

教学与科研的整合：研究生培养模式的新探索--美国“GK-12项目”述评

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学位与研究生教育 2009年第11期 75-77页

作者：丁康武汉大学研究生院武汉430072

介绍了美国国家科学基金会推动实施的"GK-12项目",将大学教育中的拓展服务植入到研究生培养中来,以便研究生更好地适应未来的职业要求。详细说明了"GK-12项目"的一种模式,即康奈尔大学实施的科学调查合作伙伴关系项目,通过介绍该项目的... 详细信息

介绍了美国国家科学基金会推动实施的"GK-12项目",将大学教育中的拓展服务植入到研究生培养中来,以便研究生更好地适应未来的职业要求。详细说明了"GK-12项目"的一种模式,即康奈尔大学实施的科学调查合作伙伴关系项目,通过介绍该项目的实施对研究生职业发展的影响,阐述了这种培养模式对我国研究生教育的启示。

关键词：研究生培养 GK-12项目拓展服务

Clinical utilization of microembolus detection by transcranial Doppler sonography in intracranial stenosis-occlusive disease

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Chinese Medical Journal 2013年第7期126卷 1355-1359页

作者： WU Xiu-juan XING Ying-qi WANG Juan LIU kang-ding Department of Neurology First Bethune Hospital of Jilin University Changchun Jilin 130021 China

Objective To discuss the clinical ultiliazation and significance of microembolus detection by transcranial Doppler （TCD） sonography in intracranial stenosis-occlusive disease. Data sources All related articles in this review were mainly searched from PubMed published in English from 1996 to 2012 using the terms of microembolic signal, transcranial Doppler, intracranial stenosis, stroke. Study selection Original articles and reviews were selected if they were related to the clinical utilization of microembolus detection in intracranial stenosis-occlusive disease. Results Intracranial stenosis is a significant cause of cerebral emboli, and microembolus detection by TCD sonography were widely used in exploring the mechanisms of ischemic stroke with intracranial stenosis （including the middle cerebral artery stenosis and the vertebral-basilar stenosis）, evaluating the prognosis of acute stroke, evaluating the therapeutic effects, and predicting the recurrent events of stroke. Conclusion Microembolus detection by TCD sonography plays an important role in the cerebral ischemic stroke patients with intracranial stenosis.

关键词： microembolic signal transcranial Doppler intracranial stenosis stroke

EU's Trade Policy on China within the WTO Framework

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China's Foreign Trade 2011年第5期 12-15页

作者： ding kang SCHOOL OF FINANCE,RENMIN UNIVERSITY OF CHINA SCHOOL OF FINANCE RENMIN UNIVERSITY OF CHINA

China's WTO accession has been ten years,and we have experienced the joy of economic growth and trade disputes, troubles as *** of them made us to rethink the function of the WTO,and how to use the WTO rules to make our interests more secure and *** 2010,China is the world's largest exporter and the world's second largest national *** country now accounts for about 11% of world trade in *** trade with the EU has gone from(?)4 billion in 1978 to(?)395 billion in *** EU continues to be China's main export *** 2010 the EU imported goods worth (?)281.9 billion from China. At the same time,China is Europe's fastest growing export *** companies are deeply integrated in Asian production *** than half of China's exports are currently

关键词：世贸组织贸易政策组织框架中国欧盟世界贸易组织 WTO规则贸易争端

6.1 kW CW laser amplifier chain based on Yb:YAG surface-doped slab

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Optoelectronics Letters 2020年第1期16卷 21-24页

作者： ZHANG Wei-qiao LIU Yang CHEN Nian-jiang ding Xiao-kang TANG Xiao-jun XIE Gui-juan Science and Technology on Solid-State Laser Key Laboratory Institute of North Optical and ElectronicsBeijing 100015China

In this paper, we present a diode-pump continuous wave laser amplifier chain where master the oscillator power amplifier(MOPA) architecture is used. The laser amplifier chain consists of two Yb:YAG surface-doped slab laser modules and the 1030 nm fiber laser is used as seed. We theoretically calculate the conditions for obtaining high output l aser power and systematically analyze the advantages of surface-doped slab. The maximum output power is 6.1 kW and the optical to optical conversion efficiency is 27% when the pump power is 22 kW at room temperature. The beam quality(β) is 2.8 times diffraction limit. These results demonstrate that the surface-doped slab structure has the potential to obtain high output laser power.

关键词： Yb:YAG amplifier temperature.

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基于振动的发动机转速高精度动态测量新方法

振动工程学报 2012年第5期25卷 595-601页

作者：林慧斌丁康华南理工大学机械与汽车工程学院广东广州510640

提出一种无需编码盘和鉴相装置的往复发动机瞬态转速测量新方法。该方法是基于发动机振动信号最低谐次频率获得发动机的估计转速,在发动机转速平稳或波动不大情况下采用离散频谱校正技术对估计转速进行校正以提高测量精度;在发动机处于... 详细信息

提出一种无需编码盘和鉴相装置的往复发动机瞬态转速测量新方法。该方法是基于发动机振动信号最低谐次频率获得发动机的估计转速,在发动机转速平稳或波动不大情况下采用离散频谱校正技术对估计转速进行校正以提高测量精度;在发动机处于升速或降速等非平稳状态时则利用获得的估计转速对发动机进行阶次跟踪,利用阶次谱获得估计转速校正参数,从而实现对发动机瞬态转速的动态测量。台架实验和不同缸数的实车测试都验证了该算法在发动机转速提取上具有很高的精度。较之在文献中常见的基于编码器的转速测量方法,这种方法硬件简单,特别适用于在用车日常维护和检测中使用。

关键词：发动机转速谐次自相关阶次跟踪频谱校正

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调制FFT及其在离散频谱校正技术中的应用

振动工程学报 2009年第6期22卷 632-637页

作者：杨志坚丁康华南理工大学机械与汽车工程学院广东广州510640 广东省汽车工程重点实验室广东广州510640

提出了一种调制快速傅立叶变换(FFT),通过时域调制对实信号进行移频,打破频域内的对称性,再进行传统的FFT。该算法克服了直接进行FFT计算结果有一半冗余的缺点,将频率分辨率提高了一倍,提高了频率定位的精确度,从而减小了最大的幅值和... 详细信息

提出了一种调制快速傅立叶变换(FFT),通过时域调制对实信号进行移频,打破频域内的对称性,再进行传统的FFT。该算法克服了直接进行FFT计算结果有一半冗余的缺点,将频率分辨率提高了一倍,提高了频率定位的精确度,从而减小了最大的幅值和相位误差,并进一步提高了抗噪性能。以比值校正法和相位差法为例,将调制FFT应用到离散频谱校正技术中,解决了基于FFT的离散频谱校正方法由于噪声影响而出现的一些问题,进一步提高了校正精度和抗噪性能。理论分析和Monte Carlo计算机模拟实验验证了上述结论的正确性。

关键词： FFT 频谱分析频谱校正调制FFT 抗噪性能