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Dual-stimuli responsive photonic barcodes based on perovskite quantum dots encapsulated in whispering-gallery-mode microspheres

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Journal of Materiomics 2023年第3期9卷 423-430页

作者： Baoyuan Xu Shuo Yang Xingwei Feng Tongjin Zhang zhenhua gao Yong Sheng Zhao School of Materials Science&Engineering Qilu University of Technology(Shandong Academy of Sciences)3501 Daxue RoadChangqing DistrictJinan250353Shandong ProvinceChina Key Laboratory of Photochemistry Institute of ChemistryChinese Academy of SciencesBeijing100190China

Micro/nanoscale photonic barcodes hold great potential for broad applications in items tracking,mul-tiplexed bioassays and anti-counterfeiting.The ever-increasing demand in advanced anti-counterfeiting applications calls for micro/nanoscale barcodes with accurate recognition,large encoding capacity and high security level.Here,we proposed a strategy to construct the dual-stimuli responsive photonic barcodes based on the perovskite quantum dots(PQDs)doped polymer whispering-gallery-mode(WGM)microcavities via swelling-deswelling method.Benefiting from the well-defined spherical microcavities,the photoluminescence(PL)spectra of as-prepared composites exhibit a series of sharp peaks characteristics resulting from the effective WGM modulation,which constitutes the fingerprint of a specific resonator and thus allows a definition of photonic barcodes.On this basis,we achieved responsive photonic barcodes based on the volatile polar-solvent-controlled luminescence in the mi-crospheres benefitting from the space-confined microcavities and the ionic feature of the PQDs.More-over,the light-controlled photonic barcodes have further been acquired through reversibly regulating the inactivation and activation of the energy transfer(ET)process between the PQDs and photochromic dyes.The well-established protocols of PQDs@WGM enable the development of distinct responsive barcodes with multi-responsive features,which will pave an avenue to new types of flexible WGM-based components for optical data recording and security labels.

关键词： Responsive photonic barcodes Perovskite quantum dots Whispering-gallery-mode microsphere Anti-counterfeiting

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Smart responsive organic microlasers with multiple emission states for high-security optical encryption

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National Science Review 2021年第2期8卷 95-101页

作者： zhenhua gao Kang Wang Yongli Yan Jiannian Yao Yong Sheng Zhao Key Laboratory of photochemistry Institute of ChemistryChinese Academy of Sciences School of Materials Science & Engineering Qilu University of Technology(Shandong Academy of Sciences) University of Chinese Academy of Sciences

Modern high-security cryptography and optical communication call for covert bit sequences with high coding capacity and efficient authentication. Stimuli-responsive lasing emissions with easily distinguishable readout are promising in the coding field as a novel cryptographic primitive, while the application is frequently restricted by the limited number of emission states. Here, we report a strategy of achieving multiple competitive lasing signals in responsive organic microspheres where a donor–acceptor pair was introduced. The competitive lasing from the donor and acceptor was reversibly switched by modulating the competition between the radiative rate of the donor and the rate of energy transfer, and the generated multiple lasing signals enabled a quaternary coding for recognizable cryptographic implementation. Data encryption and extraction were demonstrated using a 4 × 4 microlaser array, showing vast prospects in avoiding the disclosure of security information. The results offer a comprehensive understanding of excited-state dynamics in organic composite materials, which may play a major role in high-security optical recording and information encryption.

关键词： organic laser nanophotonics excited-state process responsiveness optical encryption

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Effect of 2,5-dimethylfuran addition on ignition delay times of n-heptane at high temperatures

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Frontiers in Energy 2019年第3期13卷 464-473页

作者： zhenhua gao Erjiang HU Zhaohua XU Geyuan YIN Zuohua HUANG State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong UniversityXi'an 710049China

The shock tube autoignition of 2,5-dimethylfuran (DMF)/n-heptane blends (DMF)/n-100%, by mole fraction) with equivalence ratios of 0.5, 1.0, and 2.0 over the temperature range of 1200-1800 K and pressures of 2.0 atm and 10.0 atm were investigated. A detailed blend chemical kinetic model resulting from the merging of validated kinetic models for the components of the fuel blends was developed. The experimental observations indicate that the ignition delay times nonlinearly increase with an increase in the DMF addition level. Chemical kinetic analysis including radical pool analysis and flux analysis were conducted to explain the DMF addition effects. The kinetic analysis shows that at lower DMF blending levels, the two fuels have negligible impacts on the consumption pathways of each other.As the DMF addition increases to relatively higher levels, the consumption path of n-heptane is significantly changed due to the competition of small radicals, which primarily leads to the nonlinear increase in the ignition delay times of DMF/n-heptane blends.

关键词： ignition delay time shock tube kinetic model 2,5-dimethylfuran (DMF) n-heptane

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Study of Bacillus subtilis on growth performance, nutrition metabolism and intestinal microflora of 1 to 42 d broiler chickens

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Animal Nutrition 2017年第2期3卷 109-113页

作者： zhenhua gao Haohao Wu Lin Shi Xiaohui Zhang Ran Sheng Fuquan Yin Ravi Gooneratne College of Agriculture Guangdong Ocean University Department of Wine.Food and Molecular Biosciences Lincoln University

To study the influence of different levels of Bacillus subtilis on growth performance, nutrition metabolism and intestinal microflora of 1 to 42 d Arbor Acres(AA) broilers, a total of 800 one-day-old healthy broilers were randomly divided into 5 groups with 4 replicates per group and 40 broilers per replicate. Broilers were fed a basic diet(group 1) which acted as the control group, and 4 other groups(2 to 5) were fed the basal diet with B. subtilis added at concentrations of 100, 150, 200 and 250 mg/kg, respectively for 42 days. The results showed as follow: the average daily gain(ADG) of group 4 was significantly higher than(P 0.05). The feed to gain ratio(F/G) of all the experimental groups was lower than that of the control and the difference was significant in group 4(P 0.05), crude fat(P > 0.05), dry matter(P > 0.05) and organic matter(P < 0.05). B. subtilis decreased the Escherichia coli and Salmonella populations in the cecum. This shows that adding B. subtilis to the broiler diet can improve the growth performance, increase feed efficiency, regulate serum index and reduce harmful bacteria in the intestinal tract. Based on our study, it could be recommended that addition of B. subtilis at 200 mg/kg could improve the growth performance of broilers.

关键词： Bacillus subtilis AA broilers Growth performance Intestinal microflora

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Geochronology, Geochemistry, and Hf Isotopic Compositions of Monzogranites and Mafic-Ultramafic Complexes in the Maxingdawannan Area, Eastern Kunlun Orogen, Western China: Implications for Magma Sources, Geodynamic Setting, and Petrogenesis

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Journal of Earth Science 2019年第2期30卷 335-347页

作者： Jiaming Yan Guosheng Sun Fengyue Sun Liang Li Haoran Li zhenhua gao Lei Hua Zhengping Yan College of Earth Sciences Jilin University The Eighth Institute of Shandong Geological Exploration Qinghai Provincial Bureau of Ferrous Metal and Geological Exploration

This paper presents zircon U-Pb-Hf isotopic compositions and whole-rock geochemical data for monzogranites and mafic-ultramafic complexes of the Maxingdawannan area in the western end of the east Kunlun orogenic belt, western China. The data are used to determine the ages, petrogenesis, magma sources, and geodynamic setting of the studied rocks. U-Pb zircon dating indicates that monzogranites and gabbros of the complexes were emplaced at 399 and 397 Ma, respectively. The monzogranites are shoshonitic, with high SiO2, Al2 O3 and total-alkali contents, and low TFeO, MgO, TiO2 and P2 O5 contents. The mafic-ultramafic complexes are characterized by low Si O2 contents. The monzogranites display enrichment in light rare-earth elements(LREE) and large-ion lithophile elements(LILE), depletion in heavy REEs(HREE) and high-field-strength elements(HFSE), and negative Eu anomalies(Eu/Eu*=0.36–0.48). The mafic-ultramafic complexes are also enriched in LREEs and LILEs, and depleted in HREEs and HFSEs, with weak Eu anomalies(Eu/Eu*=0.84–1.16). Zircon εHf(t) values for the monzogranites and mafic-ultramafic complexes range from-6.68 to 1.11 and-1.81 to 6.29, with zircon model ages of 1 812–1 319 Ma(TDM2) and 1 087–769 Ma(TDM1), respectively. Hf isotopic data indicate that primary magmas of the monzogranites are originated from partial melting of ancient lower crust during the Paleo-Mesoproterozoic, with a juvenile-crust component. Primitive magmas of the mafic-ultramafic complexes are likely originated from a depleted-mantle source modified by slab-derived fluids and contaminated by crustal components. Geochemical data and the geological setting indicate that Devonian intrusions in the Maxingdawannan area are related to northward subduction of the ProtoTethys oceanic lithosphere.

关键词： geochronology geochemistry Hf isotopes Maxingdawannan Proto-Tethys Ocean

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Performance and robustness analysis of a fuzzy-immune flow controller in ATM networks with time-varying multiple time-delays

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控制理论与应用（英文版） 2008年第3期6卷 253-258页

作者： Tao REN zhenhua gao Weiming KONG Yuanwei JING Muyi YANG Georgi M. DIMIROVSKI Key Laboratory of Process Industry Automation of MOE and Liaoning Province Northeastern University Shenyang Liaoning 110004 China School of Information Science and Engineering Northeastern University Shenyang Liaoning 110004 China Faculty of Engineering Department of Computer Engineering Dogus University Istanbul TR-347222 Republic of Turkey

For the Asynchronous Transfer Mode （ATM） networks with time-varying multiple time-delays, a more realistic model for the available bit rate （ABR） traffic class with explicit rate feedback is introduced. A fuzzy-immune controller is designed, which can adjust the rates of ABR on-line, overcome the bad effect caused by the saturation nonlinearity and satisfy the weighted fairness. Also, the sufficient condition that guarantees the stability of the closed-loop system with a fuzzy-immune controller is presented in theory for the first time. The algorithm exhibits good performance, and most importantly, has a solid theoretical foundation and can be implemented in practice easily. Simulation results show that the control system is rapid, adaptive, robust, and meanwhile, the quality of service （QoS） is guaranteed.

关键词： ATM networks ABR traffic Time-delay Fuzzy-immune controller Robust stabilization

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地方史及相关图文资料的翻译策略

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中国科技翻译 2024年第2期37卷 46-49页

作者：李翔高振华马来西亚国立大学环境与发展研究所吉隆坡43600 南京艺术学院国际博物馆学院南京市210013

地方史按记述时限,可分为通史和断代史;按记述内容,可分为综合史和专题史;按行政区划层级,可分为省级、地市级和县级史。博物馆展厅历史文本的英译应该至少做到如下三点:一、要让外国人看得懂译本内容;二、进一步追求文学性更强的文字;... 详细信息

地方史按记述时限,可分为通史和断代史;按记述内容,可分为综合史和专题史;按行政区划层级,可分为省级、地市级和县级史。博物馆展厅历史文本的英译应该至少做到如下三点:一、要让外国人看得懂译本内容;二、进一步追求文学性更强的文字;三、原文的重组和内容的增删要尽可能保留其主要内容。本文结合笔者在宁波中国港口博物馆“海濡之地·北仑史迹陈列”展览的翻译实践,对上述概念进行论证。

关键词：地方史展厅博物馆翻译实践

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先天性胆管扩张症的病因、分型及诊断

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外科理论与实践 2024年第2期29卷 182-185页

作者：高振华吴硕东中国医科大学附属盛京医院第二普通外科胆道外科

先天性胆管扩张症（congenital biliary dilatation, CBD）的病因仍未明确，目前以胰胆管合流异常理论为主流。分型方面则以Todani分型应用最为广泛。另一方面，由董家鸿等提出的董氏分型对手术术式的选择也有着指导意义。CBD因为临床... 详细信息

先天性胆管扩张症（congenital biliary dilatation, CBD）的病因仍未明确，目前以胰胆管合流异常理论为主流。分型方面则以Todani分型应用最为广泛。另一方面，由董家鸿等提出的董氏分型对手术术式的选择也有着指导意义。CBD因为临床症状的特异性较差，发现及诊断较为困难，往往需要根据病史先做初步诊断，同时也相当依赖影像学检查的辅助，而血清学诊断因为方便和接受程度高的优势也对CBD的诊断起到关键的作用。本文就CBD的病因分型及诊断作一综述。

关键词：先天性胆管扩张症先天性胆总管囊肿影像学诊断血清学诊断

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新时代职业教育评价改革创新实践研究

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河北能源职业技术学院学报 2024年第1期24卷 1-4页

作者：高振华刘瑞玲唐山科技职业技术学院河北唐山063000

职业教育是国家教育事业的重要组成部分,与普通教育相比较,职业教育更侧重于实践技能和实际工作能力的培养。因此,职业教育评价也应该有不同于普通教育的评价标准。本文围绕职业教育评价改革创新,从目前职业教育评价存在的五个问题入手... 详细信息

职业教育是国家教育事业的重要组成部分,与普通教育相比较,职业教育更侧重于实践技能和实际工作能力的培养。因此,职业教育评价也应该有不同于普通教育的评价标准。本文围绕职业教育评价改革创新,从目前职业教育评价存在的五个问题入手,即职业教育评价主体单一,方式过于简单陈旧,评价内容比较片面,缺乏统一、可量化标准,评价结果反馈不足,提出进行职业教育评价改革的价值所在,最后借鉴一些职业院校的成功经验,提出从三个方面加强职业教育评价改革创新路径实践研究。

关键词：职业教育职业教育评价创新实践

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文献大数据支持的产品服务供应链绩效评价

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物流科技 2024年第13期47卷 99-102,107页

作者：郜振华沈晋弘周春柳安徽工业大学管理科学与工程学院安徽马鞍山243032 复杂系统多学科管理与控制安徽普通高校重点实验室(安徽工业大学) 安徽马鞍山243002

随着制造业服务化的推广,产品服务系统(PSS)越发受到各国制造商的重视,且产品服务供应链的应运而生对于服务制造商针对供应链的管理更是呈现出良好的势态。产品服务供应链绩效的评价对具体的决策实施具有重要意义,文章在引文数据库Web o... 详细信息

随着制造业服务化的推广,产品服务系统(PSS)越发受到各国制造商的重视,且产品服务供应链的应运而生对于服务制造商针对供应链的管理更是呈现出良好的势态。产品服务供应链绩效的评价对具体的决策实施具有重要意义,文章在引文数据库Web of Science的文献大数据支持下,基于软件CiteSpace的文献数据可视化功能,通过分析关键词共现网络和关键词节点信息等方式,构建了关于产品服务供应链绩效评价的指标体系,并验证了该指标构建方法的有效性。最后,采用层次分析法以国内XX公司为案例,对体系中各指标重要性进行了判断。

关键词：产品服务供应链供应链绩效评价层次分析法

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